X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=bip39-standalone.html;h=35a88d71528b1fe8469de6123046b6942fe023a5;hb=ccdd300af33169e3f11d2bb5faad7cb55e596fbf;hp=bcb1a5d8c46ef6b837f582dc65e0d98c1f80507f;hpb=40209fd898d628372cd35459aba1d8fc4b9d8758;p=perso%2FImmae%2FProjets%2FCryptomonnaies%2FBIP39.git

diff --git a/bip39-standalone.html b/bip39-standalone.html
index bcb1a5d..35a88d7 100644
--- a/bip39-standalone.html
+++ b/bip39-standalone.html
@@ -6877,7 +6877,7 @@ button.close {
         <div class="container">
 
             <h1 class="text-center">Mnemonic Code Converter</h1>
-            <p class="version">v0.3.3</p>
+            <p class="version">v0.3.6</p>
             <hr>
             <div class="row">
                 <div class="col-md-12">
@@ -6910,7 +6910,12 @@ button.close {
                                             <option value="21">21</option>
                                             <option value="24">24</option>
                                         </select>
-                                        <span>words</span>
+                                        <span>words</span>.
+                                        <p class="warning help-block hidden">
+                                            <span class="text-danger">
+                                                Mnemonics with less than 12 words have low entropy and may be guessed by an attacker.
+                                            </span>
+                                        </p>
                                     </div>
                                 </div>
                             </div>
@@ -6956,6 +6961,8 @@ button.close {
                                     <div class="filtered col-sm-9 form-control-static"></div>
                                     <label class="col-sm-3 control-label">Raw Binary</label>
                                     <div class="binary col-sm-9 form-control-static"></div>
+                                    <label class="col-sm-3 control-label">Binary Checksum</label>
+                                    <div class="checksum col-sm-9 form-control-static">&nbsp;</div>
                                     <label class="col-sm-3 control-label">Word Indexes</label>
                                     <div class="word-indexes col-sm-9 form-control-static">&nbsp;</div>
                                     <label class="col-sm-3 control-label">Mnemonic Length</label>
@@ -6968,6 +6975,11 @@ button.close {
                                             <option value="21">21 <span>Words</span></option>
                                             <option value="24">24 <span>Words</span></option>
                                         </select>
+                                        <p class="weak-entropy-override-warning hidden">
+                                            <span class="text-danger">
+                                                The mnemonic will appear more secure than it really is.
+                                            </span>
+                                        </p>
                                     </div>
                                 </div>
                                 <div class="col-sm-3">
@@ -7003,6 +7015,7 @@ button.close {
                                     <a href="#chinese_traditional"  title="Chinese (Traditional)">中文(繁體)</a>
                                     <a href="#french"  title="French">Français</a>
                                     <a href="#italian"  title="Italian">Italiano</a>
+                                    <a href="#korean"  title="Korean">한국어</a>
                                 </div>
                             </div>
                         </div>
@@ -7457,13 +7470,25 @@ button.close {
                     <h2>Derived Addresses</h2>
                     <p>Note these addresses are derived from the BIP32 Extended Key</p>
                 </div>
-                <div class="col-md-12 use-bitpay-addresses-container hidden">
-                    <div class="checkbox">
+                <div class="col-md-12 bch-addr-type-container hidden">
+                    <div class="radio">
+                        <label>
+                            <input type="radio" value="cashaddr" name="bch-addr-type" class="use-bch-cashaddr-addresses" checked="checked">
+                            <span>Use CashAddr addresses for Bitcoin Cash (ie starting with 'q' instead of '1')</span>
+                        </label>
+                    </div>
+                    <div class="radio">
                         <label>
-                            <input type="checkbox" class="use-bitpay-addresses">
+                            <input type="radio" value="bitpay" name="bch-addr-type" class="use-bch-bitpay-addresses">
                             <span>Use BitPay-style addresses for Bitcoin Cash (ie starting with 'C' instead of '1')</span>
                         </label>
                     </div>
+                    <div class="radio">
+                        <label>
+                            <input type="radio" value="legacy" name="bch-addr-type" class="use-bch-legacy-addresses">
+                            <span>Use legacy addresses for Bitcoin Cash (ie starting with '1')</span>
+                        </label>
+                    </div>
                 </div>
                 <div class="col-md-12">
                     <div class="checkbox">
@@ -7472,7 +7497,7 @@ button.close {
                             <span>Encrypt private keys using BIP38 and this password:</span>
                         </label>
                         <input class="bip38-password">
-                        <span>Enabling BIP38 means each key will take take several minutes to generate.</span>
+                        <span>Enabling BIP38 means each key will take several minutes to generate.</span>
                     </div>
                 </div>
                 <ul class="addresses-type nav nav-tabs" role="tablist">
@@ -7575,6 +7600,9 @@ button.close {
                         <span>Be careful - it can be easy to make mistakes if you don't know what you're doing.</span>
                     </p>
                     <h3 id="entropy-notes">Entropy</h3>
+                    <p>
+                        <span>Entropy values should not include the BIP39 checksum. This is automatically added by the tool.</span>
+                    </p>
                     <p>
                         <span>
                             Entropy values must be sourced from a
@@ -13540,7 +13568,10 @@ module.exports = require('buffer')
 
 },{"buffer":2}]},{},[4])(4)
 });</script>
-        <script>(function (root) {
+        <script>// Polyfill for NFKD normalization
+// See https://github.com/walling/unorm
+
+(function (root) {
    "use strict";
 
 /***** unorm.js *****/
@@ -33209,19 +33240,13 @@ function hasOwnProperty(obj, prop) {
 
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./support/isBuffer":32,"_process":13,"inherits":31}],34:[function(require,module,exports){
-bitcoin = {
-      base58: require('bs58'),
-      bitcoin: require('bitcoinjs-lib'),
-      ecurve: require('ecurve'),
-      BigInteger: require('bigi'),
-      Buffer: require('buffer'),
-      elliptic: require('elliptic'),
-      bs58check: require('bs58check'),
-}
+let bitcoin = require('bitcoinjs-lib');
 
-module.exports = bitcoin;
+module.exports = {
+    bitcoin
+}
 
-},{"bigi":39,"bitcoinjs-lib":52,"bs58":83,"bs58check":85,"buffer":5,"ecurve":94,"elliptic":97}],35:[function(require,module,exports){
+},{"bitcoinjs-lib":52}],35:[function(require,module,exports){
 // base-x encoding
 // Forked from https://github.com/cryptocoinjs/bs58
 // Originally written by Mike Hearn for BitcoinJ
@@ -33265,7 +33290,7 @@ module.exports = function base (ALPHABET) {
     var string = ''
 
     // deal with leading zeros
-    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0]
+    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += LEADER
     // convert digits to a string
     for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
 
@@ -33273,6 +33298,7 @@ module.exports = function base (ALPHABET) {
   }
 
   function decodeUnsafe (string) {
+    if (typeof string !== 'string') throw new TypeError('Expected String')
     if (string.length === 0) return Buffer.allocUnsafe(0)
 
     var bytes = [0]
@@ -33314,21 +33340,21 @@ module.exports = function base (ALPHABET) {
   }
 }
 
-},{"safe-buffer":128}],36:[function(require,module,exports){
+},{"safe-buffer":101}],36:[function(require,module,exports){
 'use strict'
-let ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l'
+var ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l'
 
 // pre-compute lookup table
-let ALPHABET_MAP = {}
-for (let z = 0; z < ALPHABET.length; z++) {
-  let x = ALPHABET.charAt(z)
+var ALPHABET_MAP = {}
+for (var z = 0; z < ALPHABET.length; z++) {
+  var x = ALPHABET.charAt(z)
 
   if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
   ALPHABET_MAP[x] = z
 }
 
 function polymodStep (pre) {
-  let b = pre >> 25
+  var b = pre >> 25
   return ((pre & 0x1FFFFFF) << 5) ^
     (-((b >> 0) & 1) & 0x3b6a57b2) ^
     (-((b >> 1) & 1) & 0x26508e6d) ^
@@ -33338,73 +33364,76 @@ function polymodStep (pre) {
 }
 
 function prefixChk (prefix) {
-  let chk = 1
-  for (let i = 0; i < prefix.length; ++i) {
-    let c = prefix.charCodeAt(i)
+  var chk = 1
+  for (var i = 0; i < prefix.length; ++i) {
+    var c = prefix.charCodeAt(i)
     if (c < 33 || c > 126) throw new Error('Invalid prefix (' + prefix + ')')
 
     chk = polymodStep(chk) ^ (c >> 5)
   }
   chk = polymodStep(chk)
 
-  for (let i = 0; i < prefix.length; ++i) {
-    let v = prefix.charCodeAt(i)
+  for (i = 0; i < prefix.length; ++i) {
+    var v = prefix.charCodeAt(i)
     chk = polymodStep(chk) ^ (v & 0x1f)
   }
   return chk
 }
 
-function encode (prefix, words) {
-  // too long?
-  if ((prefix.length + 7 + words.length) > 90) throw new TypeError('Exceeds Bech32 maximum length')
+function encode (prefix, words, LIMIT) {
+  LIMIT = LIMIT || 90
+  if ((prefix.length + 7 + words.length) > LIMIT) throw new TypeError('Exceeds length limit')
+
   prefix = prefix.toLowerCase()
 
   // determine chk mod
-  let chk = prefixChk(prefix)
-  let result = prefix + '1'
-  for (let i = 0; i < words.length; ++i) {
-    let x = words[i]
+  var chk = prefixChk(prefix)
+  var result = prefix + '1'
+  for (var i = 0; i < words.length; ++i) {
+    var x = words[i]
     if ((x >> 5) !== 0) throw new Error('Non 5-bit word')
 
     chk = polymodStep(chk) ^ x
     result += ALPHABET.charAt(x)
   }
 
-  for (let i = 0; i < 6; ++i) {
+  for (i = 0; i < 6; ++i) {
     chk = polymodStep(chk)
   }
   chk ^= 1
 
-  for (let i = 0; i < 6; ++i) {
-    let v = (chk >> ((5 - i) * 5)) & 0x1f
+  for (i = 0; i < 6; ++i) {
+    var v = (chk >> ((5 - i) * 5)) & 0x1f
     result += ALPHABET.charAt(v)
   }
 
   return result
 }
 
-function decode (str) {
+function decode (str, LIMIT) {
+  LIMIT = LIMIT || 90
   if (str.length < 8) throw new TypeError(str + ' too short')
-  if (str.length > 90) throw new TypeError(str + ' too long')
+  if (str.length > LIMIT) throw new TypeError('Exceeds length limit')
 
   // don't allow mixed case
-  let lowered = str.toLowerCase()
-  let uppered = str.toUpperCase()
+  var lowered = str.toLowerCase()
+  var uppered = str.toUpperCase()
   if (str !== lowered && str !== uppered) throw new Error('Mixed-case string ' + str)
   str = lowered
 
-  let split = str.lastIndexOf('1')
+  var split = str.lastIndexOf('1')
+  if (split === -1) throw new Error('No separator character for ' + str)
   if (split === 0) throw new Error('Missing prefix for ' + str)
 
-  let prefix = str.slice(0, split)
-  let wordChars = str.slice(split + 1)
+  var prefix = str.slice(0, split)
+  var wordChars = str.slice(split + 1)
   if (wordChars.length < 6) throw new Error('Data too short')
 
-  let chk = prefixChk(prefix)
-  let words = []
-  for (let i = 0; i < wordChars.length; ++i) {
-    let c = wordChars.charAt(i)
-    let v = ALPHABET_MAP[c]
+  var chk = prefixChk(prefix)
+  var words = []
+  for (var i = 0; i < wordChars.length; ++i) {
+    var c = wordChars.charAt(i)
+    var v = ALPHABET_MAP[c]
     if (v === undefined) throw new Error('Unknown character ' + c)
     chk = polymodStep(chk) ^ v
 
@@ -33414,16 +33443,16 @@ function decode (str) {
   }
 
   if (chk !== 1) throw new Error('Invalid checksum for ' + str)
-  return { prefix, words }
+  return { prefix: prefix, words: words }
 }
 
 function convert (data, inBits, outBits, pad) {
-  let value = 0
-  let bits = 0
-  let maxV = (1 << outBits) - 1
+  var value = 0
+  var bits = 0
+  var maxV = (1 << outBits) - 1
 
-  let result = []
-  for (let i = 0; i < data.length; ++i) {
+  var result = []
+  for (var i = 0; i < data.length; ++i) {
     value = (value << inBits) | data[i]
     bits += inBits
 
@@ -33453,7 +33482,12 @@ function fromWords (words) {
   return convert(words, 5, 8, false)
 }
 
-module.exports = { decode, encode, toWords, fromWords }
+module.exports = {
+  decode: decode,
+  encode: encode,
+  toWords: toWords,
+  fromWords: fromWords
+}
 
 },{}],37:[function(require,module,exports){
 // (public) Constructor
@@ -35072,11 +35106,11 @@ module.exports = BigInteger
 module.exports={
   "_args": [
     [
-      "bigi",
-      "/home/ian/git/bitcoin/bitcoinjs-lib-browser"
+      "bigi@^1.4.0",
+      "/home/ian/git/bitcoin/bitcoinjs-lib-browser/node_modules/bitcoinjs-lib"
     ]
   ],
-  "_from": "bigi@latest",
+  "_from": "bigi@>=1.4.0 <2.0.0",
   "_id": "bigi@1.4.2",
   "_inCache": true,
   "_installable": true,
@@ -35094,22 +35128,21 @@ module.exports={
   "_phantomChildren": {},
   "_requested": {
     "name": "bigi",
-    "raw": "bigi",
-    "rawSpec": "",
+    "raw": "bigi@^1.4.0",
+    "rawSpec": "^1.4.0",
     "scope": null,
-    "spec": "latest",
-    "type": "tag"
+    "spec": ">=1.4.0 <2.0.0",
+    "type": "range"
   },
   "_requiredBy": [
-    "#USER",
     "/bitcoinjs-lib",
     "/ecurve"
   ],
   "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz",
   "_shasum": "9c665a95f88b8b08fc05cfd731f561859d725825",
   "_shrinkwrap": null,
-  "_spec": "bigi",
-  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser",
+  "_spec": "bigi@^1.4.0",
+  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser/node_modules/bitcoinjs-lib",
   "bugs": {
     "url": "https://github.com/cryptocoinjs/bigi/issues"
   },
@@ -35310,7 +35343,7 @@ module.exports = {
   encode: encode
 }
 
-},{"safe-buffer":128}],42:[function(require,module,exports){
+},{"safe-buffer":101}],42:[function(require,module,exports){
 module.exports={
   "OP_FALSE": 0,
   "OP_0": 0,
@@ -35319,8 +35352,8 @@ module.exports={
   "OP_PUSHDATA4": 78,
   "OP_1NEGATE": 79,
   "OP_RESERVED": 80,
-  "OP_1": 81,
   "OP_TRUE": 81,
+  "OP_1": 81,
   "OP_2": 82,
   "OP_3": 83,
   "OP_4": 84,
@@ -35425,10 +35458,13 @@ module.exports={
   "OP_CHECKMULTISIGVERIFY": 175,
 
   "OP_NOP1": 176,
+  
   "OP_NOP2": 177,
   "OP_CHECKLOCKTIMEVERIFY": 177,
 
   "OP_NOP3": 178,
+  "OP_CHECKSEQUENCEVERIFY": 178,
+  
   "OP_NOP4": 179,
   "OP_NOP5": 180,
   "OP_NOP6": 181,
@@ -35488,13 +35524,24 @@ function fromBech32 (address) {
 }
 
 function toBase58Check (hash, version) {
-  typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
+  if (version < 256){
+    typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
 
-  var payload = Buffer.allocUnsafe(21)
-  payload.writeUInt8(version, 0)
-  hash.copy(payload, 1)
+    var payload = Buffer.allocUnsafe(21)
+    payload.writeUInt8(version, 0)
+    hash.copy(payload, 1)
 
-  return bs58check.encode(payload)
+    return bs58check.encode(payload)
+  }
+  else{
+    typeforce(types.tuple(types.Hash160bit, types.UInt16), arguments)
+
+    var payload = Buffer.allocUnsafe(22)
+    payload.writeUInt16BE(version, 0)
+    hash.copy(payload, 2)
+
+    return bs58check.encode(payload)
+  }
 }
 
 function toBech32 (data, version, prefix) {
@@ -35552,7 +35599,7 @@ module.exports = {
   toOutputScript: toOutputScript
 }
 
-},{"./networks":53,"./script":54,"./templates":56,"./types":80,"bech32":36,"bs58check":85,"safe-buffer":128,"typeforce":139}],45:[function(require,module,exports){
+},{"./networks":53,"./script":54,"./templates":56,"./types":80,"bech32":36,"bs58check":83,"safe-buffer":101,"typeforce":112}],45:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 var bcrypto = require('./crypto')
 var fastMerkleRoot = require('merkle-lib/fastRoot')
@@ -35731,7 +35778,7 @@ Block.prototype.checkProofOfWork = function () {
 
 module.exports = Block
 
-},{"./crypto":47,"./transaction":78,"./types":80,"merkle-lib/fastRoot":122,"safe-buffer":128,"typeforce":139,"varuint-bitcoin":141}],46:[function(require,module,exports){
+},{"./crypto":47,"./transaction":78,"./types":80,"merkle-lib/fastRoot":97,"safe-buffer":101,"typeforce":112,"varuint-bitcoin":114}],46:[function(require,module,exports){
 var pushdata = require('pushdata-bitcoin')
 var varuint = require('varuint-bitcoin')
 
@@ -35789,7 +35836,7 @@ module.exports = {
   writeVarInt: writeVarInt
 }
 
-},{"pushdata-bitcoin":125,"varuint-bitcoin":141}],47:[function(require,module,exports){
+},{"pushdata-bitcoin":98,"varuint-bitcoin":114}],47:[function(require,module,exports){
 var createHash = require('create-hash')
 
 function ripemd160 (buffer) {
@@ -35820,7 +35867,7 @@ module.exports = {
   sha256: sha256
 }
 
-},{"create-hash":87}],48:[function(require,module,exports){
+},{"create-hash":85}],48:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 var createHmac = require('create-hmac')
 var typeforce = require('typeforce')
@@ -35983,7 +36030,7 @@ module.exports = {
   __curve: secp256k1
 }
 
-},{"./ecsignature":50,"./types":80,"bigi":39,"create-hmac":90,"ecurve":94,"safe-buffer":128,"typeforce":139}],49:[function(require,module,exports){
+},{"./ecsignature":50,"./types":80,"bigi":39,"create-hmac":88,"ecurve":92,"safe-buffer":101,"typeforce":112}],49:[function(require,module,exports){
 var baddress = require('./address')
 var bcrypto = require('./crypto')
 var ecdsa = require('./ecdsa')
@@ -36116,7 +36163,7 @@ ECPair.prototype.verify = function (hash, signature) {
 
 module.exports = ECPair
 
-},{"./address":44,"./crypto":47,"./ecdsa":48,"./networks":53,"./types":80,"bigi":39,"ecurve":94,"randombytes":126,"typeforce":139,"wif":142}],50:[function(require,module,exports){
+},{"./address":44,"./crypto":47,"./ecdsa":48,"./networks":53,"./types":80,"bigi":39,"ecurve":92,"randombytes":99,"typeforce":112,"wif":115}],50:[function(require,module,exports){
 (function (Buffer){
 var bip66 = require('bip66')
 var typeforce = require('typeforce')
@@ -36217,7 +36264,7 @@ ECSignature.prototype.toScriptSignature = function (hashType) {
 module.exports = ECSignature
 
 }).call(this,require("buffer").Buffer)
-},{"./types":80,"bigi":39,"bip66":41,"buffer":5,"typeforce":139}],51:[function(require,module,exports){
+},{"./types":80,"bigi":39,"bip66":41,"buffer":5,"typeforce":112}],51:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 var base58check = require('bs58check')
 var bcrypto = require('./crypto')
@@ -36535,7 +36582,7 @@ HDNode.prototype.derivePath = function (path) {
 
 module.exports = HDNode
 
-},{"./crypto":47,"./ecpair":49,"./networks":53,"./types":80,"bigi":39,"bs58check":85,"create-hmac":90,"ecurve":94,"safe-buffer":128,"typeforce":139}],52:[function(require,module,exports){
+},{"./crypto":47,"./ecpair":49,"./networks":53,"./types":80,"bigi":39,"bs58check":83,"create-hmac":88,"ecurve":92,"safe-buffer":101,"typeforce":112}],52:[function(require,module,exports){
 var script = require('./script')
 
 var templates = require('./templates')
@@ -36815,7 +36862,7 @@ module.exports = {
   isDefinedHashType: isDefinedHashType
 }
 
-},{"./script_number":55,"./types":80,"bip66":41,"bitcoin-ops":42,"bitcoin-ops/map":43,"pushdata-bitcoin":125,"safe-buffer":128,"typeforce":139}],55:[function(require,module,exports){
+},{"./script_number":55,"./types":80,"bip66":41,"bitcoin-ops":42,"bitcoin-ops/map":43,"pushdata-bitcoin":98,"safe-buffer":101,"typeforce":112}],55:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 
 function decode (buffer, maxLength, minimal) {
@@ -36885,7 +36932,7 @@ module.exports = {
   encode: encode
 }
 
-},{"safe-buffer":128}],56:[function(require,module,exports){
+},{"safe-buffer":101}],56:[function(require,module,exports){
 var decompile = require('../script').decompile
 var multisig = require('./multisig')
 var nullData = require('./nulldata')
@@ -37023,6 +37070,7 @@ function encode (signatures, scriptPubKey) {
 }
 
 function decodeStack (stack, allowIncomplete) {
+  typeforce(typeforce.Array, stack)
   typeforce(check, stack, allowIncomplete)
   return stack.slice(1)
 }
@@ -37040,7 +37088,7 @@ module.exports = {
   encodeStack: encodeStack
 }
 
-},{"../../script":54,"./output":59,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],59:[function(require,module,exports){
+},{"../../script":54,"./output":59,"bitcoin-ops":42,"safe-buffer":101,"typeforce":112}],59:[function(require,module,exports){
 // m [pubKeys ...] n OP_CHECKMULTISIG
 
 var bscript = require('../../script')
@@ -37106,7 +37154,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],60:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],60:[function(require,module,exports){
 // OP_RETURN {data}
 
 var bscript = require('../script')
@@ -37142,7 +37190,7 @@ module.exports = {
   }
 }
 
-},{"../script":54,"../types":80,"bitcoin-ops":42,"typeforce":139}],61:[function(require,module,exports){
+},{"../script":54,"../types":80,"bitcoin-ops":42,"typeforce":112}],61:[function(require,module,exports){
 arguments[4][57][0].apply(exports,arguments)
 },{"./input":62,"./output":63,"dup":57}],62:[function(require,module,exports){
 // {signature}
@@ -37168,6 +37216,7 @@ function encode (signature) {
 }
 
 function decodeStack (stack) {
+  typeforce(typeforce.Array, stack)
   typeforce(check, stack)
   return stack[0]
 }
@@ -37185,7 +37234,7 @@ module.exports = {
   encodeStack: encodeStack
 }
 
-},{"../../script":54,"typeforce":139}],63:[function(require,module,exports){
+},{"../../script":54,"typeforce":112}],63:[function(require,module,exports){
 // {pubKey} OP_CHECKSIG
 
 var bscript = require('../../script')
@@ -37220,7 +37269,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"bitcoin-ops":42,"typeforce":139}],64:[function(require,module,exports){
+},{"../../script":54,"bitcoin-ops":42,"typeforce":112}],64:[function(require,module,exports){
 arguments[4][57][0].apply(exports,arguments)
 },{"./input":65,"./output":66,"dup":57}],65:[function(require,module,exports){
 // {signature} {pubKey}
@@ -37254,6 +37303,7 @@ function encode (signature, pubKey) {
 }
 
 function decodeStack (stack) {
+  typeforce(typeforce.Array, stack)
   typeforce(check, stack)
 
   return {
@@ -37275,7 +37325,7 @@ module.exports = {
   encodeStack: encodeStack
 }
 
-},{"../../script":54,"typeforce":139}],66:[function(require,module,exports){
+},{"../../script":54,"typeforce":112}],66:[function(require,module,exports){
 // OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
 
 var bscript = require('../../script')
@@ -37319,7 +37369,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],67:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],67:[function(require,module,exports){
 arguments[4][57][0].apply(exports,arguments)
 },{"./input":68,"./output":69,"dup":57}],68:[function(require,module,exports){
 // <scriptSig> {serialized scriptPubKey script}
@@ -37383,6 +37433,7 @@ function encode (redeemScriptSig, redeemScript) {
 }
 
 function decodeStack (stack) {
+  typeforce(typeforce.Array, stack)
   typeforce(check, stack)
 
   return {
@@ -37407,7 +37458,7 @@ module.exports = {
   encodeStack: encodeStack
 }
 
-},{"../../script":54,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"../witnesspubkeyhash/output":74,"../witnessscripthash/output":77,"safe-buffer":128,"typeforce":139}],69:[function(require,module,exports){
+},{"../../script":54,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"../witnesspubkeyhash/output":74,"../witnessscripthash/output":77,"safe-buffer":101,"typeforce":112}],69:[function(require,module,exports){
 // OP_HASH160 {scriptHash} OP_EQUAL
 
 var bscript = require('../../script')
@@ -37443,7 +37494,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],70:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],70:[function(require,module,exports){
 module.exports = {
   output: require('./output')
 }
@@ -37492,7 +37543,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],72:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"safe-buffer":101,"typeforce":112}],72:[function(require,module,exports){
 arguments[4][57][0].apply(exports,arguments)
 },{"./input":73,"./output":74,"dup":57}],73:[function(require,module,exports){
 // {signature} {pubKey}
@@ -37526,6 +37577,7 @@ function encodeStack (signature, pubKey) {
 }
 
 function decodeStack (stack) {
+  typeforce(typeforce.Array, stack)
   typeforce(check, stack)
 
   return {
@@ -37540,7 +37592,7 @@ module.exports = {
   encodeStack: encodeStack
 }
 
-},{"../../script":54,"typeforce":139}],74:[function(require,module,exports){
+},{"../../script":54,"typeforce":112}],74:[function(require,module,exports){
 // OP_0 {pubKeyHash}
 
 var bscript = require('../../script')
@@ -37575,7 +37627,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],75:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],75:[function(require,module,exports){
 arguments[4][57][0].apply(exports,arguments)
 },{"./input":76,"./output":77,"dup":57}],76:[function(require,module,exports){
 (function (Buffer){
@@ -37629,11 +37681,12 @@ function encodeStack (witnessData, witnessScript) {
   return [].concat(witnessData, witnessScript)
 }
 
-function decodeStack (chunks) {
-  typeforce(check, chunks)
+function decodeStack (stack) {
+  typeforce(typeforce.Array, stack)
+  typeforce(check, stack)
   return {
-    witnessData: chunks.slice(0, -1),
-    witnessScript: chunks[chunks.length - 1]
+    witnessData: stack.slice(0, -1),
+    witnessScript: stack[stack.length - 1]
   }
 }
 
@@ -37644,7 +37697,7 @@ module.exports = {
 }
 
 }).call(this,{"isBuffer":require("../../../../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
-},{"../../../../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"../../script":54,"../../types":80,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"typeforce":139}],77:[function(require,module,exports){
+},{"../../../../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"../../script":54,"../../types":80,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"typeforce":112}],77:[function(require,module,exports){
 // OP_0 {scriptHash}
 
 var bscript = require('../../script')
@@ -37679,7 +37732,7 @@ module.exports = {
   encode: encode
 }
 
-},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],78:[function(require,module,exports){
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],78:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 var bcrypto = require('./crypto')
 var bscript = require('./script')
@@ -38173,7 +38226,7 @@ Transaction.prototype.setWitness = function (index, witness) {
 
 module.exports = Transaction
 
-},{"./bufferutils":46,"./crypto":47,"./script":54,"./types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139,"varuint-bitcoin":141}],79:[function(require,module,exports){
+},{"./bufferutils":46,"./crypto":47,"./script":54,"./types":80,"bitcoin-ops":42,"safe-buffer":101,"typeforce":112,"varuint-bitcoin":114}],79:[function(require,module,exports){
 var Buffer = require('safe-buffer').Buffer
 var baddress = require('./address')
 var bcrypto = require('./crypto')
@@ -38645,7 +38698,7 @@ function TransactionBuilder (network, maximumFeeRate) {
   this.network = network || networks.bitcoin
 
   // WARNING: This is __NOT__ to be relied on, its just another potential safety mechanism (safety in-depth)
-  this.maximumFeeRate = maximumFeeRate || 1000
+  this.maximumFeeRate = maximumFeeRate || 2500
 
   this.inputs = []
   this.tx = new Transaction()
@@ -38952,7 +39005,7 @@ TransactionBuilder.prototype.__overMaximumFees = function (bytes) {
 
 module.exports = TransactionBuilder
 
-},{"./address":44,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],80:[function(require,module,exports){
+},{"./address":44,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./types":80,"bitcoin-ops":42,"safe-buffer":101,"typeforce":112}],80:[function(require,module,exports){
 var typeforce = require('typeforce')
 
 var UINT31_MAX = Math.pow(2, 31) - 1
@@ -38982,8 +39035,8 @@ var Network = typeforce.compile({
     public: typeforce.UInt32,
     private: typeforce.UInt32
   },
-  pubKeyHash: typeforce.UInt8,
-  scriptHash: typeforce.UInt8,
+  pubKeyHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16),
+  scriptHash: typeforce.oneOf(typeforce.UInt8, typeforce.UInt16),
   wif: typeforce.UInt8
 })
 
@@ -39007,15159 +39060,7230 @@ for (var typeName in typeforce) {
 
 module.exports = types
 
-},{"typeforce":139}],81:[function(require,module,exports){
-(function (module, exports) {
-  'use strict';
+},{"typeforce":112}],81:[function(require,module,exports){
+var basex = require('base-x')
+var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
 
-  // Utils
-  function assert (val, msg) {
-    if (!val) throw new Error(msg || 'Assertion failed');
-  }
+module.exports = basex(ALPHABET)
 
-  // Could use `inherits` module, but don't want to move from single file
-  // architecture yet.
-  function inherits (ctor, superCtor) {
-    ctor.super_ = superCtor;
-    var TempCtor = function () {};
-    TempCtor.prototype = superCtor.prototype;
-    ctor.prototype = new TempCtor();
-    ctor.prototype.constructor = ctor;
-  }
+},{"base-x":35}],82:[function(require,module,exports){
+'use strict'
 
-  // BN
+var base58 = require('bs58')
+var Buffer = require('safe-buffer').Buffer
 
-  function BN (number, base, endian) {
-    if (BN.isBN(number)) {
-      return number;
-    }
+module.exports = function (checksumFn) {
+  // Encode a buffer as a base58-check encoded string
+  function encode (payload) {
+    var checksum = checksumFn(payload)
 
-    this.negative = 0;
-    this.words = null;
-    this.length = 0;
+    return base58.encode(Buffer.concat([
+      payload,
+      checksum
+    ], payload.length + 4))
+  }
 
-    // Reduction context
-    this.red = null;
+  function decodeRaw (buffer) {
+    var payload = buffer.slice(0, -4)
+    var checksum = buffer.slice(-4)
+    var newChecksum = checksumFn(payload)
 
-    if (number !== null) {
-      if (base === 'le' || base === 'be') {
-        endian = base;
-        base = 10;
-      }
+    if (checksum[0] ^ newChecksum[0] |
+        checksum[1] ^ newChecksum[1] |
+        checksum[2] ^ newChecksum[2] |
+        checksum[3] ^ newChecksum[3]) return
 
-      this._init(number || 0, base || 10, endian || 'be');
-    }
+    return payload
   }
-  if (typeof module === 'object') {
-    module.exports = BN;
-  } else {
-    exports.BN = BN;
+
+  // Decode a base58-check encoded string to a buffer, no result if checksum is wrong
+  function decodeUnsafe (string) {
+    var buffer = base58.decodeUnsafe(string)
+    if (!buffer) return
+
+    return decodeRaw(buffer)
   }
 
-  BN.BN = BN;
-  BN.wordSize = 26;
+  function decode (string) {
+    var buffer = base58.decode(string)
+    var payload = decodeRaw(buffer, checksumFn)
+    if (!payload) throw new Error('Invalid checksum')
+    return payload
+  }
 
-  var Buffer;
-  try {
-    Buffer = require('buf' + 'fer').Buffer;
-  } catch (e) {
+  return {
+    encode: encode,
+    decode: decode,
+    decodeUnsafe: decodeUnsafe
   }
+}
 
-  BN.isBN = function isBN (num) {
-    if (num instanceof BN) {
-      return true;
-    }
+},{"bs58":81,"safe-buffer":101}],83:[function(require,module,exports){
+'use strict'
 
-    return num !== null && typeof num === 'object' &&
-      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
-  };
+var createHash = require('create-hash')
+var bs58checkBase = require('./base')
 
-  BN.max = function max (left, right) {
-    if (left.cmp(right) > 0) return left;
-    return right;
-  };
+// SHA256(SHA256(buffer))
+function sha256x2 (buffer) {
+  var tmp = createHash('sha256').update(buffer).digest()
+  return createHash('sha256').update(tmp).digest()
+}
 
-  BN.min = function min (left, right) {
-    if (left.cmp(right) < 0) return left;
-    return right;
-  };
+module.exports = bs58checkBase(sha256x2)
 
-  BN.prototype._init = function init (number, base, endian) {
-    if (typeof number === 'number') {
-      return this._initNumber(number, base, endian);
-    }
+},{"./base":82,"create-hash":85}],84:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var Transform = require('stream').Transform
+var StringDecoder = require('string_decoder').StringDecoder
+var inherits = require('inherits')
 
-    if (typeof number === 'object') {
-      return this._initArray(number, base, endian);
-    }
+function CipherBase (hashMode) {
+  Transform.call(this)
+  this.hashMode = typeof hashMode === 'string'
+  if (this.hashMode) {
+    this[hashMode] = this._finalOrDigest
+  } else {
+    this.final = this._finalOrDigest
+  }
+  if (this._final) {
+    this.__final = this._final
+    this._final = null
+  }
+  this._decoder = null
+  this._encoding = null
+}
+inherits(CipherBase, Transform)
 
-    if (base === 'hex') {
-      base = 16;
-    }
-    assert(base === (base | 0) && base >= 2 && base <= 36);
+CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
+  if (typeof data === 'string') {
+    data = Buffer.from(data, inputEnc)
+  }
 
-    number = number.toString().replace(/\s+/g, '');
-    var start = 0;
-    if (number[0] === '-') {
-      start++;
-    }
+  var outData = this._update(data)
+  if (this.hashMode) return this
 
-    if (base === 16) {
-      this._parseHex(number, start);
-    } else {
-      this._parseBase(number, base, start);
-    }
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc)
+  }
 
-    if (number[0] === '-') {
-      this.negative = 1;
-    }
+  return outData
+}
 
-    this.strip();
+CipherBase.prototype.setAutoPadding = function () {}
+CipherBase.prototype.getAuthTag = function () {
+  throw new Error('trying to get auth tag in unsupported state')
+}
 
-    if (endian !== 'le') return;
+CipherBase.prototype.setAuthTag = function () {
+  throw new Error('trying to set auth tag in unsupported state')
+}
 
-    this._initArray(this.toArray(), base, endian);
-  };
+CipherBase.prototype.setAAD = function () {
+  throw new Error('trying to set aad in unsupported state')
+}
 
-  BN.prototype._initNumber = function _initNumber (number, base, endian) {
-    if (number < 0) {
-      this.negative = 1;
-      number = -number;
-    }
-    if (number < 0x4000000) {
-      this.words = [ number & 0x3ffffff ];
-      this.length = 1;
-    } else if (number < 0x10000000000000) {
-      this.words = [
-        number & 0x3ffffff,
-        (number / 0x4000000) & 0x3ffffff
-      ];
-      this.length = 2;
+CipherBase.prototype._transform = function (data, _, next) {
+  var err
+  try {
+    if (this.hashMode) {
+      this._update(data)
     } else {
-      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
-      this.words = [
-        number & 0x3ffffff,
-        (number / 0x4000000) & 0x3ffffff,
-        1
-      ];
-      this.length = 3;
+      this.push(this._update(data))
     }
+  } catch (e) {
+    err = e
+  } finally {
+    next(err)
+  }
+}
+CipherBase.prototype._flush = function (done) {
+  var err
+  try {
+    this.push(this.__final())
+  } catch (e) {
+    err = e
+  }
 
-    if (endian !== 'le') return;
+  done(err)
+}
+CipherBase.prototype._finalOrDigest = function (outputEnc) {
+  var outData = this.__final() || Buffer.alloc(0)
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc, true)
+  }
+  return outData
+}
 
-    // Reverse the bytes
-    this._initArray(this.toArray(), base, endian);
-  };
+CipherBase.prototype._toString = function (value, enc, fin) {
+  if (!this._decoder) {
+    this._decoder = new StringDecoder(enc)
+    this._encoding = enc
+  }
 
-  BN.prototype._initArray = function _initArray (number, base, endian) {
-    // Perhaps a Uint8Array
-    assert(typeof number.length === 'number');
-    if (number.length <= 0) {
-      this.words = [ 0 ];
-      this.length = 1;
-      return this;
-    }
+  if (this._encoding !== enc) throw new Error('can\'t switch encodings')
 
-    this.length = Math.ceil(number.length / 3);
-    this.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      this.words[i] = 0;
-    }
+  var out = this._decoder.write(value)
+  if (fin) {
+    out += this._decoder.end()
+  }
 
-    var j, w;
-    var off = 0;
-    if (endian === 'be') {
-      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
-        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
-        this.words[j] |= (w << off) & 0x3ffffff;
-        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
-        off += 24;
-        if (off >= 26) {
-          off -= 26;
-          j++;
-        }
-      }
-    } else if (endian === 'le') {
-      for (i = 0, j = 0; i < number.length; i += 3) {
-        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
-        this.words[j] |= (w << off) & 0x3ffffff;
-        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
-        off += 24;
-        if (off >= 26) {
-          off -= 26;
-          j++;
-        }
-      }
-    }
-    return this.strip();
-  };
+  return out
+}
 
-  function parseHex (str, start, end) {
-    var r = 0;
-    var len = Math.min(str.length, end);
-    for (var i = start; i < len; i++) {
-      var c = str.charCodeAt(i) - 48;
+module.exports = CipherBase
 
-      r <<= 4;
+},{"inherits":96,"safe-buffer":101,"stream":28,"string_decoder":29}],85:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var inherits = require('inherits')
+var md5 = require('./md5')
+var RIPEMD160 = require('ripemd160')
+var sha = require('sha.js')
 
-      // 'a' - 'f'
-      if (c >= 49 && c <= 54) {
-        r |= c - 49 + 0xa;
+var Base = require('cipher-base')
 
-      // 'A' - 'F'
-      } else if (c >= 17 && c <= 22) {
-        r |= c - 17 + 0xa;
+function HashNoConstructor (hash) {
+  Base.call(this, 'digest')
 
-      // '0' - '9'
-      } else {
-        r |= c & 0xf;
-      }
-    }
-    return r;
-  }
+  this._hash = hash
+  this.buffers = []
+}
 
-  BN.prototype._parseHex = function _parseHex (number, start) {
-    // Create possibly bigger array to ensure that it fits the number
-    this.length = Math.ceil((number.length - start) / 6);
-    this.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      this.words[i] = 0;
-    }
+inherits(HashNoConstructor, Base)
 
-    var j, w;
-    // Scan 24-bit chunks and add them to the number
-    var off = 0;
-    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
-      w = parseHex(number, i, i + 6);
-      this.words[j] |= (w << off) & 0x3ffffff;
-      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
-      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
-      off += 24;
-      if (off >= 26) {
-        off -= 26;
-        j++;
-      }
-    }
-    if (i + 6 !== start) {
-      w = parseHex(number, start, i + 6);
-      this.words[j] |= (w << off) & 0x3ffffff;
-      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
-    }
-    this.strip();
-  };
+HashNoConstructor.prototype._update = function (data) {
+  this.buffers.push(data)
+}
 
-  function parseBase (str, start, end, mul) {
-    var r = 0;
-    var len = Math.min(str.length, end);
-    for (var i = start; i < len; i++) {
-      var c = str.charCodeAt(i) - 48;
+HashNoConstructor.prototype._final = function () {
+  var buf = Buffer.concat(this.buffers)
+  var r = this._hash(buf)
+  this.buffers = null
 
-      r *= mul;
+  return r
+}
 
-      // 'a'
-      if (c >= 49) {
-        r += c - 49 + 0xa;
+function Hash (hash) {
+  Base.call(this, 'digest')
 
-      // 'A'
-      } else if (c >= 17) {
-        r += c - 17 + 0xa;
+  this._hash = hash
+}
 
-      // '0' - '9'
-      } else {
-        r += c;
-      }
-    }
-    return r;
-  }
+inherits(Hash, Base)
 
-  BN.prototype._parseBase = function _parseBase (number, base, start) {
-    // Initialize as zero
-    this.words = [ 0 ];
-    this.length = 1;
+Hash.prototype._update = function (data) {
+  this._hash.update(data)
+}
 
-    // Find length of limb in base
-    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
-      limbLen++;
-    }
-    limbLen--;
-    limbPow = (limbPow / base) | 0;
+Hash.prototype._final = function () {
+  return this._hash.digest()
+}
 
-    var total = number.length - start;
-    var mod = total % limbLen;
-    var end = Math.min(total, total - mod) + start;
+module.exports = function createHash (alg) {
+  alg = alg.toLowerCase()
+  if (alg === 'md5') return new HashNoConstructor(md5)
+  if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160())
 
-    var word = 0;
-    for (var i = start; i < end; i += limbLen) {
-      word = parseBase(number, i, i + limbLen, base);
+  return new Hash(sha(alg))
+}
 
-      this.imuln(limbPow);
-      if (this.words[0] + word < 0x4000000) {
-        this.words[0] += word;
-      } else {
-        this._iaddn(word);
-      }
-    }
+}).call(this,require("buffer").Buffer)
+},{"./md5":87,"buffer":5,"cipher-base":84,"inherits":96,"ripemd160":100,"sha.js":103}],86:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var intSize = 4
+var zeroBuffer = new Buffer(intSize)
+zeroBuffer.fill(0)
 
-    if (mod !== 0) {
-      var pow = 1;
-      word = parseBase(number, i, number.length, base);
+var charSize = 8
+var hashSize = 16
 
-      for (i = 0; i < mod; i++) {
-        pow *= base;
-      }
+function toArray (buf) {
+  if ((buf.length % intSize) !== 0) {
+    var len = buf.length + (intSize - (buf.length % intSize))
+    buf = Buffer.concat([buf, zeroBuffer], len)
+  }
 
-      this.imuln(pow);
-      if (this.words[0] + word < 0x4000000) {
-        this.words[0] += word;
-      } else {
-        this._iaddn(word);
-      }
-    }
-  };
+  var arr = new Array(buf.length >>> 2)
+  for (var i = 0, j = 0; i < buf.length; i += intSize, j++) {
+    arr[j] = buf.readInt32LE(i)
+  }
 
-  BN.prototype.copy = function copy (dest) {
-    dest.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      dest.words[i] = this.words[i];
-    }
-    dest.length = this.length;
-    dest.negative = this.negative;
-    dest.red = this.red;
-  };
+  return arr
+}
 
-  BN.prototype.clone = function clone () {
-    var r = new BN(null);
-    this.copy(r);
-    return r;
-  };
+module.exports = function hash (buf, fn) {
+  var arr = fn(toArray(buf), buf.length * charSize)
+  buf = new Buffer(hashSize)
+  for (var i = 0; i < arr.length; i++) {
+    buf.writeInt32LE(arr[i], i << 2, true)
+  }
+  return buf
+}
 
-  BN.prototype._expand = function _expand (size) {
-    while (this.length < size) {
-      this.words[this.length++] = 0;
-    }
-    return this;
-  };
+}).call(this,require("buffer").Buffer)
+},{"buffer":5}],87:[function(require,module,exports){
+'use strict'
+/*
+ * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
+ * Digest Algorithm, as defined in RFC 1321.
+ * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for more info.
+ */
 
-  // Remove leading `0` from `this`
-  BN.prototype.strip = function strip () {
-    while (this.length > 1 && this.words[this.length - 1] === 0) {
-      this.length--;
-    }
-    return this._normSign();
-  };
+var makeHash = require('./make-hash')
 
-  BN.prototype._normSign = function _normSign () {
-    // -0 = 0
-    if (this.length === 1 && this.words[0] === 0) {
-      this.negative = 0;
-    }
-    return this;
-  };
+/*
+ * Calculate the MD5 of an array of little-endian words, and a bit length
+ */
+function core_md5 (x, len) {
+  /* append padding */
+  x[len >> 5] |= 0x80 << ((len) % 32)
+  x[(((len + 64) >>> 9) << 4) + 14] = len
 
-  BN.prototype.inspect = function inspect () {
-    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
-  };
+  var a = 1732584193
+  var b = -271733879
+  var c = -1732584194
+  var d = 271733878
 
-  /*
+  for (var i = 0; i < x.length; i += 16) {
+    var olda = a
+    var oldb = b
+    var oldc = c
+    var oldd = d
 
-  var zeros = [];
-  var groupSizes = [];
-  var groupBases = [];
+    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936)
+    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586)
+    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819)
+    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330)
+    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897)
+    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426)
+    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341)
+    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983)
+    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416)
+    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417)
+    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063)
+    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162)
+    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682)
+    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101)
+    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290)
+    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329)
 
-  var s = '';
-  var i = -1;
-  while (++i < BN.wordSize) {
-    zeros[i] = s;
-    s += '0';
-  }
-  groupSizes[0] = 0;
-  groupSizes[1] = 0;
-  groupBases[0] = 0;
-  groupBases[1] = 0;
-  var base = 2 - 1;
-  while (++base < 36 + 1) {
-    var groupSize = 0;
-    var groupBase = 1;
-    while (groupBase < (1 << BN.wordSize) / base) {
-      groupBase *= base;
-      groupSize += 1;
-    }
-    groupSizes[base] = groupSize;
-    groupBases[base] = groupBase;
-  }
+    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510)
+    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632)
+    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713)
+    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302)
+    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691)
+    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083)
+    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335)
+    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848)
+    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438)
+    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690)
+    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961)
+    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501)
+    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467)
+    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784)
+    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473)
+    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734)
 
-  */
+    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558)
+    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463)
+    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562)
+    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556)
+    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060)
+    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353)
+    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632)
+    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640)
+    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174)
+    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222)
+    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979)
+    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189)
+    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487)
+    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835)
+    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520)
+    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651)
 
-  var zeros = [
-    '',
-    '0',
-    '00',
-    '000',
-    '0000',
-    '00000',
-    '000000',
-    '0000000',
-    '00000000',
-    '000000000',
-    '0000000000',
-    '00000000000',
-    '000000000000',
-    '0000000000000',
-    '00000000000000',
-    '000000000000000',
-    '0000000000000000',
-    '00000000000000000',
-    '000000000000000000',
-    '0000000000000000000',
-    '00000000000000000000',
-    '000000000000000000000',
-    '0000000000000000000000',
-    '00000000000000000000000',
-    '000000000000000000000000',
-    '0000000000000000000000000'
-  ];
+    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844)
+    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415)
+    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905)
+    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055)
+    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571)
+    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606)
+    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523)
+    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799)
+    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359)
+    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744)
+    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380)
+    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649)
+    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070)
+    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379)
+    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259)
+    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551)
 
-  var groupSizes = [
-    0, 0,
-    25, 16, 12, 11, 10, 9, 8,
-    8, 7, 7, 7, 7, 6, 6,
-    6, 6, 6, 6, 6, 5, 5,
-    5, 5, 5, 5, 5, 5, 5,
-    5, 5, 5, 5, 5, 5, 5
-  ];
+    a = safe_add(a, olda)
+    b = safe_add(b, oldb)
+    c = safe_add(c, oldc)
+    d = safe_add(d, oldd)
+  }
 
-  var groupBases = [
-    0, 0,
-    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
-    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
-    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
-    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
-    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
-  ];
+  return [a, b, c, d]
+}
 
-  BN.prototype.toString = function toString (base, padding) {
-    base = base || 10;
-    padding = padding | 0 || 1;
+/*
+ * These functions implement the four basic operations the algorithm uses.
+ */
+function md5_cmn (q, a, b, x, s, t) {
+  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
+}
 
-    var out;
-    if (base === 16 || base === 'hex') {
-      out = '';
-      var off = 0;
-      var carry = 0;
-      for (var i = 0; i < this.length; i++) {
-        var w = this.words[i];
-        var word = (((w << off) | carry) & 0xffffff).toString(16);
-        carry = (w >>> (24 - off)) & 0xffffff;
-        if (carry !== 0 || i !== this.length - 1) {
-          out = zeros[6 - word.length] + word + out;
-        } else {
-          out = word + out;
-        }
-        off += 2;
-        if (off >= 26) {
-          off -= 26;
-          i--;
-        }
-      }
-      if (carry !== 0) {
-        out = carry.toString(16) + out;
-      }
-      while (out.length % padding !== 0) {
-        out = '0' + out;
-      }
-      if (this.negative !== 0) {
-        out = '-' + out;
-      }
-      return out;
-    }
+function md5_ff (a, b, c, d, x, s, t) {
+  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
+}
 
-    if (base === (base | 0) && base >= 2 && base <= 36) {
-      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
-      var groupSize = groupSizes[base];
-      // var groupBase = Math.pow(base, groupSize);
-      var groupBase = groupBases[base];
-      out = '';
-      var c = this.clone();
-      c.negative = 0;
-      while (!c.isZero()) {
-        var r = c.modn(groupBase).toString(base);
-        c = c.idivn(groupBase);
+function md5_gg (a, b, c, d, x, s, t) {
+  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
+}
 
-        if (!c.isZero()) {
-          out = zeros[groupSize - r.length] + r + out;
-        } else {
-          out = r + out;
-        }
-      }
-      if (this.isZero()) {
-        out = '0' + out;
-      }
-      while (out.length % padding !== 0) {
-        out = '0' + out;
-      }
-      if (this.negative !== 0) {
-        out = '-' + out;
-      }
-      return out;
-    }
+function md5_hh (a, b, c, d, x, s, t) {
+  return md5_cmn(b ^ c ^ d, a, b, x, s, t)
+}
 
-    assert(false, 'Base should be between 2 and 36');
-  };
+function md5_ii (a, b, c, d, x, s, t) {
+  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
+}
 
-  BN.prototype.toNumber = function toNumber () {
-    var ret = this.words[0];
-    if (this.length === 2) {
-      ret += this.words[1] * 0x4000000;
-    } else if (this.length === 3 && this.words[2] === 0x01) {
-      // NOTE: at this stage it is known that the top bit is set
-      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
-    } else if (this.length > 2) {
-      assert(false, 'Number can only safely store up to 53 bits');
-    }
-    return (this.negative !== 0) ? -ret : ret;
-  };
+/*
+ * Add integers, wrapping at 2^32. This uses 16-bit operations internally
+ * to work around bugs in some JS interpreters.
+ */
+function safe_add (x, y) {
+  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
+  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
+  return (msw << 16) | (lsw & 0xFFFF)
+}
 
-  BN.prototype.toJSON = function toJSON () {
-    return this.toString(16);
-  };
+/*
+ * Bitwise rotate a 32-bit number to the left.
+ */
+function bit_rol (num, cnt) {
+  return (num << cnt) | (num >>> (32 - cnt))
+}
 
-  BN.prototype.toBuffer = function toBuffer (endian, length) {
-    assert(typeof Buffer !== 'undefined');
-    return this.toArrayLike(Buffer, endian, length);
-  };
+module.exports = function md5 (buf) {
+  return makeHash(buf, core_md5)
+}
 
-  BN.prototype.toArray = function toArray (endian, length) {
-    return this.toArrayLike(Array, endian, length);
-  };
+},{"./make-hash":86}],88:[function(require,module,exports){
+'use strict'
+var inherits = require('inherits')
+var Legacy = require('./legacy')
+var Base = require('cipher-base')
+var Buffer = require('safe-buffer').Buffer
+var md5 = require('create-hash/md5')
+var RIPEMD160 = require('ripemd160')
 
-  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
-    var byteLength = this.byteLength();
-    var reqLength = length || Math.max(1, byteLength);
-    assert(byteLength <= reqLength, 'byte array longer than desired length');
-    assert(reqLength > 0, 'Requested array length <= 0');
+var sha = require('sha.js')
 
-    this.strip();
-    var littleEndian = endian === 'le';
-    var res = new ArrayType(reqLength);
+var ZEROS = Buffer.alloc(128)
 
-    var b, i;
-    var q = this.clone();
-    if (!littleEndian) {
-      // Assume big-endian
-      for (i = 0; i < reqLength - byteLength; i++) {
-        res[i] = 0;
-      }
+function Hmac (alg, key) {
+  Base.call(this, 'digest')
+  if (typeof key === 'string') {
+    key = Buffer.from(key)
+  }
 
-      for (i = 0; !q.isZero(); i++) {
-        b = q.andln(0xff);
-        q.iushrn(8);
+  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
 
-        res[reqLength - i - 1] = b;
-      }
-    } else {
-      for (i = 0; !q.isZero(); i++) {
-        b = q.andln(0xff);
-        q.iushrn(8);
+  this._alg = alg
+  this._key = key
+  if (key.length > blocksize) {
+    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
+    key = hash.update(key).digest()
+  } else if (key.length < blocksize) {
+    key = Buffer.concat([key, ZEROS], blocksize)
+  }
 
-        res[i] = b;
-      }
+  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
+  var opad = this._opad = Buffer.allocUnsafe(blocksize)
 
-      for (; i < reqLength; i++) {
-        res[i] = 0;
-      }
-    }
+  for (var i = 0; i < blocksize; i++) {
+    ipad[i] = key[i] ^ 0x36
+    opad[i] = key[i] ^ 0x5C
+  }
+  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
+  this._hash.update(ipad)
+}
 
-    return res;
-  };
+inherits(Hmac, Base)
 
-  if (Math.clz32) {
-    BN.prototype._countBits = function _countBits (w) {
-      return 32 - Math.clz32(w);
-    };
-  } else {
-    BN.prototype._countBits = function _countBits (w) {
-      var t = w;
-      var r = 0;
-      if (t >= 0x1000) {
-        r += 13;
-        t >>>= 13;
-      }
-      if (t >= 0x40) {
-        r += 7;
-        t >>>= 7;
-      }
-      if (t >= 0x8) {
-        r += 4;
-        t >>>= 4;
-      }
-      if (t >= 0x02) {
-        r += 2;
-        t >>>= 2;
-      }
-      return r + t;
-    };
+Hmac.prototype._update = function (data) {
+  this._hash.update(data)
+}
+
+Hmac.prototype._final = function () {
+  var h = this._hash.digest()
+  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
+  return hash.update(this._opad).update(h).digest()
+}
+
+module.exports = function createHmac (alg, key) {
+  alg = alg.toLowerCase()
+  if (alg === 'rmd160' || alg === 'ripemd160') {
+    return new Hmac('rmd160', key)
   }
+  if (alg === 'md5') {
+    return new Legacy(md5, key)
+  }
+  return new Hmac(alg, key)
+}
 
-  BN.prototype._zeroBits = function _zeroBits (w) {
-    // Short-cut
-    if (w === 0) return 26;
+},{"./legacy":89,"cipher-base":84,"create-hash/md5":87,"inherits":96,"ripemd160":100,"safe-buffer":101,"sha.js":103}],89:[function(require,module,exports){
+'use strict'
+var inherits = require('inherits')
+var Buffer = require('safe-buffer').Buffer
 
-    var t = w;
-    var r = 0;
-    if ((t & 0x1fff) === 0) {
-      r += 13;
-      t >>>= 13;
-    }
-    if ((t & 0x7f) === 0) {
-      r += 7;
-      t >>>= 7;
-    }
-    if ((t & 0xf) === 0) {
-      r += 4;
-      t >>>= 4;
-    }
-    if ((t & 0x3) === 0) {
-      r += 2;
-      t >>>= 2;
-    }
-    if ((t & 0x1) === 0) {
-      r++;
-    }
-    return r;
-  };
+var Base = require('cipher-base')
 
-  // Return number of used bits in a BN
-  BN.prototype.bitLength = function bitLength () {
-    var w = this.words[this.length - 1];
-    var hi = this._countBits(w);
-    return (this.length - 1) * 26 + hi;
-  };
+var ZEROS = Buffer.alloc(128)
+var blocksize = 64
 
-  function toBitArray (num) {
-    var w = new Array(num.bitLength());
+function Hmac (alg, key) {
+  Base.call(this, 'digest')
+  if (typeof key === 'string') {
+    key = Buffer.from(key)
+  }
 
-    for (var bit = 0; bit < w.length; bit++) {
-      var off = (bit / 26) | 0;
-      var wbit = bit % 26;
+  this._alg = alg
+  this._key = key
 
-      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
-    }
+  if (key.length > blocksize) {
+    key = alg(key)
+  } else if (key.length < blocksize) {
+    key = Buffer.concat([key, ZEROS], blocksize)
+  }
 
-    return w;
+  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
+  var opad = this._opad = Buffer.allocUnsafe(blocksize)
+
+  for (var i = 0; i < blocksize; i++) {
+    ipad[i] = key[i] ^ 0x36
+    opad[i] = key[i] ^ 0x5C
   }
 
-  // Number of trailing zero bits
-  BN.prototype.zeroBits = function zeroBits () {
-    if (this.isZero()) return 0;
+  this._hash = [ipad]
+}
 
-    var r = 0;
-    for (var i = 0; i < this.length; i++) {
-      var b = this._zeroBits(this.words[i]);
-      r += b;
-      if (b !== 26) break;
-    }
-    return r;
-  };
+inherits(Hmac, Base)
 
-  BN.prototype.byteLength = function byteLength () {
-    return Math.ceil(this.bitLength() / 8);
-  };
+Hmac.prototype._update = function (data) {
+  this._hash.push(data)
+}
 
-  BN.prototype.toTwos = function toTwos (width) {
-    if (this.negative !== 0) {
-      return this.abs().inotn(width).iaddn(1);
-    }
-    return this.clone();
-  };
+Hmac.prototype._final = function () {
+  var h = this._alg(Buffer.concat(this._hash))
+  return this._alg(Buffer.concat([this._opad, h]))
+}
+module.exports = Hmac
 
-  BN.prototype.fromTwos = function fromTwos (width) {
-    if (this.testn(width - 1)) {
-      return this.notn(width).iaddn(1).ineg();
-    }
-    return this.clone();
-  };
-
-  BN.prototype.isNeg = function isNeg () {
-    return this.negative !== 0;
-  };
-
-  // Return negative clone of `this`
-  BN.prototype.neg = function neg () {
-    return this.clone().ineg();
-  };
-
-  BN.prototype.ineg = function ineg () {
-    if (!this.isZero()) {
-      this.negative ^= 1;
-    }
+},{"cipher-base":84,"inherits":96,"safe-buffer":101}],90:[function(require,module,exports){
+var assert = require('assert')
+var BigInteger = require('bigi')
 
-    return this;
-  };
+var Point = require('./point')
 
-  // Or `num` with `this` in-place
-  BN.prototype.iuor = function iuor (num) {
-    while (this.length < num.length) {
-      this.words[this.length++] = 0;
-    }
+function Curve (p, a, b, Gx, Gy, n, h) {
+  this.p = p
+  this.a = a
+  this.b = b
+  this.G = Point.fromAffine(this, Gx, Gy)
+  this.n = n
+  this.h = h
 
-    for (var i = 0; i < num.length; i++) {
-      this.words[i] = this.words[i] | num.words[i];
-    }
+  this.infinity = new Point(this, null, null, BigInteger.ZERO)
 
-    return this.strip();
-  };
+  // result caching
+  this.pOverFour = p.add(BigInteger.ONE).shiftRight(2)
 
-  BN.prototype.ior = function ior (num) {
-    assert((this.negative | num.negative) === 0);
-    return this.iuor(num);
-  };
+  // determine size of p in bytes
+  this.pLength = Math.floor((this.p.bitLength() + 7) / 8)
+}
 
-  // Or `num` with `this`
-  BN.prototype.or = function or (num) {
-    if (this.length > num.length) return this.clone().ior(num);
-    return num.clone().ior(this);
-  };
+Curve.prototype.pointFromX = function (isOdd, x) {
+  var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p)
+  var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves
 
-  BN.prototype.uor = function uor (num) {
-    if (this.length > num.length) return this.clone().iuor(num);
-    return num.clone().iuor(this);
-  };
+  var y = beta
+  if (beta.isEven() ^ !isOdd) {
+    y = this.p.subtract(y) // -y % p
+  }
 
-  // And `num` with `this` in-place
-  BN.prototype.iuand = function iuand (num) {
-    // b = min-length(num, this)
-    var b;
-    if (this.length > num.length) {
-      b = num;
-    } else {
-      b = this;
-    }
+  return Point.fromAffine(this, x, y)
+}
 
-    for (var i = 0; i < b.length; i++) {
-      this.words[i] = this.words[i] & num.words[i];
-    }
+Curve.prototype.isInfinity = function (Q) {
+  if (Q === this.infinity) return true
 
-    this.length = b.length;
+  return Q.z.signum() === 0 && Q.y.signum() !== 0
+}
 
-    return this.strip();
-  };
+Curve.prototype.isOnCurve = function (Q) {
+  if (this.isInfinity(Q)) return true
 
-  BN.prototype.iand = function iand (num) {
-    assert((this.negative | num.negative) === 0);
-    return this.iuand(num);
-  };
+  var x = Q.affineX
+  var y = Q.affineY
+  var a = this.a
+  var b = this.b
+  var p = this.p
 
-  // And `num` with `this`
-  BN.prototype.and = function and (num) {
-    if (this.length > num.length) return this.clone().iand(num);
-    return num.clone().iand(this);
-  };
+  // Check that xQ and yQ are integers in the interval [0, p - 1]
+  if (x.signum() < 0 || x.compareTo(p) >= 0) return false
+  if (y.signum() < 0 || y.compareTo(p) >= 0) return false
 
-  BN.prototype.uand = function uand (num) {
-    if (this.length > num.length) return this.clone().iuand(num);
-    return num.clone().iuand(this);
-  };
+  // and check that y^2 = x^3 + ax + b (mod p)
+  var lhs = y.square().mod(p)
+  var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p)
+  return lhs.equals(rhs)
+}
 
-  // Xor `num` with `this` in-place
-  BN.prototype.iuxor = function iuxor (num) {
-    // a.length > b.length
-    var a;
-    var b;
-    if (this.length > num.length) {
-      a = this;
-      b = num;
-    } else {
-      a = num;
-      b = this;
-    }
+/**
+ * Validate an elliptic curve point.
+ *
+ * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
+ */
+Curve.prototype.validate = function (Q) {
+  // Check Q != O
+  assert(!this.isInfinity(Q), 'Point is at infinity')
+  assert(this.isOnCurve(Q), 'Point is not on the curve')
 
-    for (var i = 0; i < b.length; i++) {
-      this.words[i] = a.words[i] ^ b.words[i];
-    }
+  // Check nQ = O (where Q is a scalar multiple of G)
+  var nQ = Q.multiply(this.n)
+  assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G')
 
-    if (this !== a) {
-      for (; i < a.length; i++) {
-        this.words[i] = a.words[i];
-      }
-    }
+  return true
+}
 
-    this.length = a.length;
+module.exports = Curve
 
-    return this.strip();
-  };
+},{"./point":94,"assert":1,"bigi":39}],91:[function(require,module,exports){
+module.exports={
+  "secp128r1": {
+    "p": "fffffffdffffffffffffffffffffffff",
+    "a": "fffffffdfffffffffffffffffffffffc",
+    "b": "e87579c11079f43dd824993c2cee5ed3",
+    "n": "fffffffe0000000075a30d1b9038a115",
+    "h": "01",
+    "Gx": "161ff7528b899b2d0c28607ca52c5b86",
+    "Gy": "cf5ac8395bafeb13c02da292dded7a83"
+  },
+  "secp160k1": {
+    "p": "fffffffffffffffffffffffffffffffeffffac73",
+    "a": "00",
+    "b": "07",
+    "n": "0100000000000000000001b8fa16dfab9aca16b6b3",
+    "h": "01",
+    "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb",
+    "Gy": "938cf935318fdced6bc28286531733c3f03c4fee"
+  },
+  "secp160r1": {
+    "p": "ffffffffffffffffffffffffffffffff7fffffff",
+    "a": "ffffffffffffffffffffffffffffffff7ffffffc",
+    "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45",
+    "n": "0100000000000000000001f4c8f927aed3ca752257",
+    "h": "01",
+    "Gx": "4a96b5688ef573284664698968c38bb913cbfc82",
+    "Gy": "23a628553168947d59dcc912042351377ac5fb32"
+  },
+  "secp192k1": {
+    "p": "fffffffffffffffffffffffffffffffffffffffeffffee37",
+    "a": "00",
+    "b": "03",
+    "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d",
+    "h": "01",
+    "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d",
+    "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d"
+  },
+  "secp192r1": {
+    "p": "fffffffffffffffffffffffffffffffeffffffffffffffff",
+    "a": "fffffffffffffffffffffffffffffffefffffffffffffffc",
+    "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1",
+    "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831",
+    "h": "01",
+    "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012",
+    "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811"
+  },
+  "secp256k1": {
+    "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f",
+    "a": "00",
+    "b": "07",
+    "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
+    "h": "01",
+    "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
+    "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
+  },
+  "secp256r1": {
+    "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
+    "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
+    "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
+    "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
+    "h": "01",
+    "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
+    "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5"
+  }
+}
 
-  BN.prototype.ixor = function ixor (num) {
-    assert((this.negative | num.negative) === 0);
-    return this.iuxor(num);
-  };
+},{}],92:[function(require,module,exports){
+var Point = require('./point')
+var Curve = require('./curve')
 
-  // Xor `num` with `this`
-  BN.prototype.xor = function xor (num) {
-    if (this.length > num.length) return this.clone().ixor(num);
-    return num.clone().ixor(this);
-  };
+var getCurveByName = require('./names')
 
-  BN.prototype.uxor = function uxor (num) {
-    if (this.length > num.length) return this.clone().iuxor(num);
-    return num.clone().iuxor(this);
-  };
+module.exports = {
+  Curve: Curve,
+  Point: Point,
+  getCurveByName: getCurveByName
+}
 
-  // Not ``this`` with ``width`` bitwidth
-  BN.prototype.inotn = function inotn (width) {
-    assert(typeof width === 'number' && width >= 0);
+},{"./curve":90,"./names":93,"./point":94}],93:[function(require,module,exports){
+var BigInteger = require('bigi')
 
-    var bytesNeeded = Math.ceil(width / 26) | 0;
-    var bitsLeft = width % 26;
+var curves = require('./curves.json')
+var Curve = require('./curve')
 
-    // Extend the buffer with leading zeroes
-    this._expand(bytesNeeded);
+function getCurveByName (name) {
+  var curve = curves[name]
+  if (!curve) return null
 
-    if (bitsLeft > 0) {
-      bytesNeeded--;
-    }
+  var p = new BigInteger(curve.p, 16)
+  var a = new BigInteger(curve.a, 16)
+  var b = new BigInteger(curve.b, 16)
+  var n = new BigInteger(curve.n, 16)
+  var h = new BigInteger(curve.h, 16)
+  var Gx = new BigInteger(curve.Gx, 16)
+  var Gy = new BigInteger(curve.Gy, 16)
 
-    // Handle complete words
-    for (var i = 0; i < bytesNeeded; i++) {
-      this.words[i] = ~this.words[i] & 0x3ffffff;
-    }
+  return new Curve(p, a, b, Gx, Gy, n, h)
+}
 
-    // Handle the residue
-    if (bitsLeft > 0) {
-      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
-    }
+module.exports = getCurveByName
 
-    // And remove leading zeroes
-    return this.strip();
-  };
+},{"./curve":90,"./curves.json":91,"bigi":39}],94:[function(require,module,exports){
+var assert = require('assert')
+var Buffer = require('safe-buffer').Buffer
+var BigInteger = require('bigi')
 
-  BN.prototype.notn = function notn (width) {
-    return this.clone().inotn(width);
-  };
+var THREE = BigInteger.valueOf(3)
 
-  // Set `bit` of `this`
-  BN.prototype.setn = function setn (bit, val) {
-    assert(typeof bit === 'number' && bit >= 0);
+function Point (curve, x, y, z) {
+  assert.notStrictEqual(z, undefined, 'Missing Z coordinate')
 
-    var off = (bit / 26) | 0;
-    var wbit = bit % 26;
+  this.curve = curve
+  this.x = x
+  this.y = y
+  this.z = z
+  this._zInv = null
 
-    this._expand(off + 1);
+  this.compressed = true
+}
 
-    if (val) {
-      this.words[off] = this.words[off] | (1 << wbit);
-    } else {
-      this.words[off] = this.words[off] & ~(1 << wbit);
+Object.defineProperty(Point.prototype, 'zInv', {
+  get: function () {
+    if (this._zInv === null) {
+      this._zInv = this.z.modInverse(this.curve.p)
     }
 
-    return this.strip();
-  };
+    return this._zInv
+  }
+})
 
-  // Add `num` to `this` in-place
-  BN.prototype.iadd = function iadd (num) {
-    var r;
+Object.defineProperty(Point.prototype, 'affineX', {
+  get: function () {
+    return this.x.multiply(this.zInv).mod(this.curve.p)
+  }
+})
 
-    // negative + positive
-    if (this.negative !== 0 && num.negative === 0) {
-      this.negative = 0;
-      r = this.isub(num);
-      this.negative ^= 1;
-      return this._normSign();
+Object.defineProperty(Point.prototype, 'affineY', {
+  get: function () {
+    return this.y.multiply(this.zInv).mod(this.curve.p)
+  }
+})
 
-    // positive + negative
-    } else if (this.negative === 0 && num.negative !== 0) {
-      num.negative = 0;
-      r = this.isub(num);
-      num.negative = 1;
-      return r._normSign();
-    }
+Point.fromAffine = function (curve, x, y) {
+  return new Point(curve, x, y, BigInteger.ONE)
+}
 
-    // a.length > b.length
-    var a, b;
-    if (this.length > num.length) {
-      a = this;
-      b = num;
-    } else {
-      a = num;
-      b = this;
-    }
+Point.prototype.equals = function (other) {
+  if (other === this) return true
+  if (this.curve.isInfinity(this)) return this.curve.isInfinity(other)
+  if (this.curve.isInfinity(other)) return this.curve.isInfinity(this)
 
-    var carry = 0;
-    for (var i = 0; i < b.length; i++) {
-      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
-      this.words[i] = r & 0x3ffffff;
-      carry = r >>> 26;
-    }
-    for (; carry !== 0 && i < a.length; i++) {
-      r = (a.words[i] | 0) + carry;
-      this.words[i] = r & 0x3ffffff;
-      carry = r >>> 26;
-    }
+  // u = Y2 * Z1 - Y1 * Z2
+  var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p)
 
-    this.length = a.length;
-    if (carry !== 0) {
-      this.words[this.length] = carry;
-      this.length++;
-    // Copy the rest of the words
-    } else if (a !== this) {
-      for (; i < a.length; i++) {
-        this.words[i] = a.words[i];
-      }
-    }
+  if (u.signum() !== 0) return false
 
-    return this;
-  };
+  // v = X2 * Z1 - X1 * Z2
+  var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p)
 
-  // Add `num` to `this`
-  BN.prototype.add = function add (num) {
-    var res;
-    if (num.negative !== 0 && this.negative === 0) {
-      num.negative = 0;
-      res = this.sub(num);
-      num.negative ^= 1;
-      return res;
-    } else if (num.negative === 0 && this.negative !== 0) {
-      this.negative = 0;
-      res = num.sub(this);
-      this.negative = 1;
-      return res;
-    }
+  return v.signum() === 0
+}
 
-    if (this.length > num.length) return this.clone().iadd(num);
+Point.prototype.negate = function () {
+  var y = this.curve.p.subtract(this.y)
 
-    return num.clone().iadd(this);
-  };
+  return new Point(this.curve, this.x, y, this.z)
+}
 
-  // Subtract `num` from `this` in-place
-  BN.prototype.isub = function isub (num) {
-    // this - (-num) = this + num
-    if (num.negative !== 0) {
-      num.negative = 0;
-      var r = this.iadd(num);
-      num.negative = 1;
-      return r._normSign();
+Point.prototype.add = function (b) {
+  if (this.curve.isInfinity(this)) return b
+  if (this.curve.isInfinity(b)) return this
 
-    // -this - num = -(this + num)
-    } else if (this.negative !== 0) {
-      this.negative = 0;
-      this.iadd(num);
-      this.negative = 1;
-      return this._normSign();
-    }
+  var x1 = this.x
+  var y1 = this.y
+  var x2 = b.x
+  var y2 = b.y
 
-    // At this point both numbers are positive
-    var cmp = this.cmp(num);
+  // u = Y2 * Z1 - Y1 * Z2
+  var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p)
+  // v = X2 * Z1 - X1 * Z2
+  var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p)
 
-    // Optimization - zeroify
-    if (cmp === 0) {
-      this.negative = 0;
-      this.length = 1;
-      this.words[0] = 0;
-      return this;
+  if (v.signum() === 0) {
+    if (u.signum() === 0) {
+      return this.twice() // this == b, so double
     }
 
-    // a > b
-    var a, b;
-    if (cmp > 0) {
-      a = this;
-      b = num;
-    } else {
-      a = num;
-      b = this;
-    }
+    return this.curve.infinity // this = -b, so infinity
+  }
 
-    var carry = 0;
-    for (var i = 0; i < b.length; i++) {
-      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
-      carry = r >> 26;
-      this.words[i] = r & 0x3ffffff;
-    }
-    for (; carry !== 0 && i < a.length; i++) {
-      r = (a.words[i] | 0) + carry;
-      carry = r >> 26;
-      this.words[i] = r & 0x3ffffff;
-    }
+  var v2 = v.square()
+  var v3 = v2.multiply(v)
+  var x1v2 = x1.multiply(v2)
+  var zu2 = u.square().multiply(this.z)
 
-    // Copy rest of the words
-    if (carry === 0 && i < a.length && a !== this) {
-      for (; i < a.length; i++) {
-        this.words[i] = a.words[i];
-      }
-    }
+  // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
+  var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p)
+  // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
+  var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p)
+  // z3 = v^3 * z1 * z2
+  var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p)
 
-    this.length = Math.max(this.length, i);
+  return new Point(this.curve, x3, y3, z3)
+}
 
-    if (a !== this) {
-      this.negative = 1;
-    }
+Point.prototype.twice = function () {
+  if (this.curve.isInfinity(this)) return this
+  if (this.y.signum() === 0) return this.curve.infinity
 
-    return this.strip();
-  };
+  var x1 = this.x
+  var y1 = this.y
 
-  // Subtract `num` from `this`
-  BN.prototype.sub = function sub (num) {
-    return this.clone().isub(num);
-  };
+  var y1z1 = y1.multiply(this.z).mod(this.curve.p)
+  var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p)
+  var a = this.curve.a
 
-  function smallMulTo (self, num, out) {
-    out.negative = num.negative ^ self.negative;
-    var len = (self.length + num.length) | 0;
-    out.length = len;
-    len = (len - 1) | 0;
+  // w = 3 * x1^2 + a * z1^2
+  var w = x1.square().multiply(THREE)
 
-    // Peel one iteration (compiler can't do it, because of code complexity)
-    var a = self.words[0] | 0;
-    var b = num.words[0] | 0;
-    var r = a * b;
+  if (a.signum() !== 0) {
+    w = w.add(this.z.square().multiply(a))
+  }
 
-    var lo = r & 0x3ffffff;
-    var carry = (r / 0x4000000) | 0;
-    out.words[0] = lo;
+  w = w.mod(this.curve.p)
+  // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
+  var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p)
+  // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
+  var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p)
+  // z3 = 8 * (y1 * z1)^3
+  var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p)
 
-    for (var k = 1; k < len; k++) {
-      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
-      // note that ncarry could be >= 0x3ffffff
-      var ncarry = carry >>> 26;
-      var rword = carry & 0x3ffffff;
-      var maxJ = Math.min(k, num.length - 1);
-      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
-        var i = (k - j) | 0;
-        a = self.words[i] | 0;
-        b = num.words[j] | 0;
-        r = a * b + rword;
-        ncarry += (r / 0x4000000) | 0;
-        rword = r & 0x3ffffff;
+  return new Point(this.curve, x3, y3, z3)
+}
+
+// Simple NAF (Non-Adjacent Form) multiplication algorithm
+// TODO: modularize the multiplication algorithm
+Point.prototype.multiply = function (k) {
+  if (this.curve.isInfinity(this)) return this
+  if (k.signum() === 0) return this.curve.infinity
+
+  var e = k
+  var h = e.multiply(THREE)
+
+  var neg = this.negate()
+  var R = this
+
+  for (var i = h.bitLength() - 2; i > 0; --i) {
+    var hBit = h.testBit(i)
+    var eBit = e.testBit(i)
+
+    R = R.twice()
+
+    if (hBit !== eBit) {
+      R = R.add(hBit ? this : neg)
+    }
+  }
+
+  return R
+}
+
+// Compute this*j + x*k (simultaneous multiplication)
+Point.prototype.multiplyTwo = function (j, x, k) {
+  var i = Math.max(j.bitLength(), k.bitLength()) - 1
+  var R = this.curve.infinity
+  var both = this.add(x)
+
+  while (i >= 0) {
+    var jBit = j.testBit(i)
+    var kBit = k.testBit(i)
+
+    R = R.twice()
+
+    if (jBit) {
+      if (kBit) {
+        R = R.add(both)
+      } else {
+        R = R.add(this)
       }
-      out.words[k] = rword | 0;
-      carry = ncarry | 0;
+    } else if (kBit) {
+      R = R.add(x)
     }
-    if (carry !== 0) {
-      out.words[k] = carry | 0;
-    } else {
-      out.length--;
+    --i
+  }
+
+  return R
+}
+
+Point.prototype.getEncoded = function (compressed) {
+  if (compressed == null) compressed = this.compressed
+  if (this.curve.isInfinity(this)) return Buffer.alloc(1, 0) // Infinity point encoded is simply '00'
+
+  var x = this.affineX
+  var y = this.affineY
+  var byteLength = this.curve.pLength
+  var buffer
+
+  // 0x02/0x03 | X
+  if (compressed) {
+    buffer = Buffer.allocUnsafe(1 + byteLength)
+    buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0)
+
+  // 0x04 | X | Y
+  } else {
+    buffer = Buffer.allocUnsafe(1 + byteLength + byteLength)
+    buffer.writeUInt8(0x04, 0)
+
+    y.toBuffer(byteLength).copy(buffer, 1 + byteLength)
+  }
+
+  x.toBuffer(byteLength).copy(buffer, 1)
+
+  return buffer
+}
+
+Point.decodeFrom = function (curve, buffer) {
+  var type = buffer.readUInt8(0)
+  var compressed = (type !== 4)
+
+  var byteLength = Math.floor((curve.p.bitLength() + 7) / 8)
+  var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength))
+
+  var Q
+  if (compressed) {
+    assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length')
+    assert(type === 0x02 || type === 0x03, 'Invalid sequence tag')
+
+    var isOdd = (type === 0x03)
+    Q = curve.pointFromX(isOdd, x)
+  } else {
+    assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length')
+
+    var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength))
+    Q = Point.fromAffine(curve, x, y)
+  }
+
+  Q.compressed = compressed
+  return Q
+}
+
+Point.prototype.toString = function () {
+  if (this.curve.isInfinity(this)) return '(INFINITY)'
+
+  return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')'
+}
+
+module.exports = Point
+
+},{"assert":1,"bigi":39,"safe-buffer":101}],95:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var Transform = require('stream').Transform
+var inherits = require('inherits')
+
+function HashBase (blockSize) {
+  Transform.call(this)
+
+  this._block = new Buffer(blockSize)
+  this._blockSize = blockSize
+  this._blockOffset = 0
+  this._length = [0, 0, 0, 0]
+
+  this._finalized = false
+}
+
+inherits(HashBase, Transform)
+
+HashBase.prototype._transform = function (chunk, encoding, callback) {
+  var error = null
+  try {
+    if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding)
+    this.update(chunk)
+  } catch (err) {
+    error = err
+  }
+
+  callback(error)
+}
+
+HashBase.prototype._flush = function (callback) {
+  var error = null
+  try {
+    this.push(this._digest())
+  } catch (err) {
+    error = err
+  }
+
+  callback(error)
+}
+
+HashBase.prototype.update = function (data, encoding) {
+  if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
+  if (this._finalized) throw new Error('Digest already called')
+  if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary')
+
+  // consume data
+  var block = this._block
+  var offset = 0
+  while (this._blockOffset + data.length - offset >= this._blockSize) {
+    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
+    this._update()
+    this._blockOffset = 0
+  }
+  while (offset < data.length) block[this._blockOffset++] = data[offset++]
+
+  // update length
+  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
+    this._length[j] += carry
+    carry = (this._length[j] / 0x0100000000) | 0
+    if (carry > 0) this._length[j] -= 0x0100000000 * carry
+  }
+
+  return this
+}
+
+HashBase.prototype._update = function (data) {
+  throw new Error('_update is not implemented')
+}
+
+HashBase.prototype.digest = function (encoding) {
+  if (this._finalized) throw new Error('Digest already called')
+  this._finalized = true
+
+  var digest = this._digest()
+  if (encoding !== undefined) digest = digest.toString(encoding)
+  return digest
+}
+
+HashBase.prototype._digest = function () {
+  throw new Error('_digest is not implemented')
+}
+
+module.exports = HashBase
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"inherits":96,"stream":28}],96:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],97:[function(require,module,exports){
+(function (Buffer){
+// constant-space merkle root calculation algorithm
+module.exports = function fastRoot (values, digestFn) {
+  if (!Array.isArray(values)) throw TypeError('Expected values Array')
+  if (typeof digestFn !== 'function') throw TypeError('Expected digest Function')
+
+  var length = values.length
+  var results = values.concat()
+
+  while (length > 1) {
+    var j = 0
+
+    for (var i = 0; i < length; i += 2, ++j) {
+      var left = results[i]
+      var right = i + 1 === length ? left : results[i + 1]
+      var data = Buffer.concat([left, right])
+
+      results[j] = digestFn(data)
     }
 
-    return out.strip();
+    length = j
   }
 
-  // TODO(indutny): it may be reasonable to omit it for users who don't need
-  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
-  // multiplication (like elliptic secp256k1).
-  var comb10MulTo = function comb10MulTo (self, num, out) {
-    var a = self.words;
-    var b = num.words;
-    var o = out.words;
-    var c = 0;
-    var lo;
-    var mid;
-    var hi;
-    var a0 = a[0] | 0;
-    var al0 = a0 & 0x1fff;
-    var ah0 = a0 >>> 13;
-    var a1 = a[1] | 0;
-    var al1 = a1 & 0x1fff;
-    var ah1 = a1 >>> 13;
-    var a2 = a[2] | 0;
-    var al2 = a2 & 0x1fff;
-    var ah2 = a2 >>> 13;
-    var a3 = a[3] | 0;
-    var al3 = a3 & 0x1fff;
-    var ah3 = a3 >>> 13;
-    var a4 = a[4] | 0;
-    var al4 = a4 & 0x1fff;
-    var ah4 = a4 >>> 13;
-    var a5 = a[5] | 0;
-    var al5 = a5 & 0x1fff;
-    var ah5 = a5 >>> 13;
-    var a6 = a[6] | 0;
-    var al6 = a6 & 0x1fff;
-    var ah6 = a6 >>> 13;
-    var a7 = a[7] | 0;
-    var al7 = a7 & 0x1fff;
-    var ah7 = a7 >>> 13;
-    var a8 = a[8] | 0;
-    var al8 = a8 & 0x1fff;
-    var ah8 = a8 >>> 13;
-    var a9 = a[9] | 0;
-    var al9 = a9 & 0x1fff;
-    var ah9 = a9 >>> 13;
-    var b0 = b[0] | 0;
-    var bl0 = b0 & 0x1fff;
-    var bh0 = b0 >>> 13;
-    var b1 = b[1] | 0;
-    var bl1 = b1 & 0x1fff;
-    var bh1 = b1 >>> 13;
-    var b2 = b[2] | 0;
-    var bl2 = b2 & 0x1fff;
-    var bh2 = b2 >>> 13;
-    var b3 = b[3] | 0;
-    var bl3 = b3 & 0x1fff;
-    var bh3 = b3 >>> 13;
-    var b4 = b[4] | 0;
-    var bl4 = b4 & 0x1fff;
-    var bh4 = b4 >>> 13;
-    var b5 = b[5] | 0;
-    var bl5 = b5 & 0x1fff;
-    var bh5 = b5 >>> 13;
-    var b6 = b[6] | 0;
-    var bl6 = b6 & 0x1fff;
-    var bh6 = b6 >>> 13;
-    var b7 = b[7] | 0;
-    var bl7 = b7 & 0x1fff;
-    var bh7 = b7 >>> 13;
-    var b8 = b[8] | 0;
-    var bl8 = b8 & 0x1fff;
-    var bh8 = b8 >>> 13;
-    var b9 = b[9] | 0;
-    var bl9 = b9 & 0x1fff;
-    var bh9 = b9 >>> 13;
+  return results[0]
+}
 
-    out.negative = self.negative ^ num.negative;
-    out.length = 19;
-    /* k = 0 */
-    lo = Math.imul(al0, bl0);
-    mid = Math.imul(al0, bh0);
-    mid = (mid + Math.imul(ah0, bl0)) | 0;
-    hi = Math.imul(ah0, bh0);
-    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
-    w0 &= 0x3ffffff;
-    /* k = 1 */
-    lo = Math.imul(al1, bl0);
-    mid = Math.imul(al1, bh0);
-    mid = (mid + Math.imul(ah1, bl0)) | 0;
-    hi = Math.imul(ah1, bh0);
-    lo = (lo + Math.imul(al0, bl1)) | 0;
-    mid = (mid + Math.imul(al0, bh1)) | 0;
-    mid = (mid + Math.imul(ah0, bl1)) | 0;
-    hi = (hi + Math.imul(ah0, bh1)) | 0;
-    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
-    w1 &= 0x3ffffff;
-    /* k = 2 */
-    lo = Math.imul(al2, bl0);
-    mid = Math.imul(al2, bh0);
-    mid = (mid + Math.imul(ah2, bl0)) | 0;
-    hi = Math.imul(ah2, bh0);
-    lo = (lo + Math.imul(al1, bl1)) | 0;
-    mid = (mid + Math.imul(al1, bh1)) | 0;
-    mid = (mid + Math.imul(ah1, bl1)) | 0;
-    hi = (hi + Math.imul(ah1, bh1)) | 0;
-    lo = (lo + Math.imul(al0, bl2)) | 0;
-    mid = (mid + Math.imul(al0, bh2)) | 0;
-    mid = (mid + Math.imul(ah0, bl2)) | 0;
-    hi = (hi + Math.imul(ah0, bh2)) | 0;
-    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
-    w2 &= 0x3ffffff;
-    /* k = 3 */
-    lo = Math.imul(al3, bl0);
-    mid = Math.imul(al3, bh0);
-    mid = (mid + Math.imul(ah3, bl0)) | 0;
-    hi = Math.imul(ah3, bh0);
-    lo = (lo + Math.imul(al2, bl1)) | 0;
-    mid = (mid + Math.imul(al2, bh1)) | 0;
-    mid = (mid + Math.imul(ah2, bl1)) | 0;
-    hi = (hi + Math.imul(ah2, bh1)) | 0;
-    lo = (lo + Math.imul(al1, bl2)) | 0;
-    mid = (mid + Math.imul(al1, bh2)) | 0;
-    mid = (mid + Math.imul(ah1, bl2)) | 0;
-    hi = (hi + Math.imul(ah1, bh2)) | 0;
-    lo = (lo + Math.imul(al0, bl3)) | 0;
-    mid = (mid + Math.imul(al0, bh3)) | 0;
-    mid = (mid + Math.imul(ah0, bl3)) | 0;
-    hi = (hi + Math.imul(ah0, bh3)) | 0;
-    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
-    w3 &= 0x3ffffff;
-    /* k = 4 */
-    lo = Math.imul(al4, bl0);
-    mid = Math.imul(al4, bh0);
-    mid = (mid + Math.imul(ah4, bl0)) | 0;
-    hi = Math.imul(ah4, bh0);
-    lo = (lo + Math.imul(al3, bl1)) | 0;
-    mid = (mid + Math.imul(al3, bh1)) | 0;
-    mid = (mid + Math.imul(ah3, bl1)) | 0;
-    hi = (hi + Math.imul(ah3, bh1)) | 0;
-    lo = (lo + Math.imul(al2, bl2)) | 0;
-    mid = (mid + Math.imul(al2, bh2)) | 0;
-    mid = (mid + Math.imul(ah2, bl2)) | 0;
-    hi = (hi + Math.imul(ah2, bh2)) | 0;
-    lo = (lo + Math.imul(al1, bl3)) | 0;
-    mid = (mid + Math.imul(al1, bh3)) | 0;
-    mid = (mid + Math.imul(ah1, bl3)) | 0;
-    hi = (hi + Math.imul(ah1, bh3)) | 0;
-    lo = (lo + Math.imul(al0, bl4)) | 0;
-    mid = (mid + Math.imul(al0, bh4)) | 0;
-    mid = (mid + Math.imul(ah0, bl4)) | 0;
-    hi = (hi + Math.imul(ah0, bh4)) | 0;
-    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
-    w4 &= 0x3ffffff;
-    /* k = 5 */
-    lo = Math.imul(al5, bl0);
-    mid = Math.imul(al5, bh0);
-    mid = (mid + Math.imul(ah5, bl0)) | 0;
-    hi = Math.imul(ah5, bh0);
-    lo = (lo + Math.imul(al4, bl1)) | 0;
-    mid = (mid + Math.imul(al4, bh1)) | 0;
-    mid = (mid + Math.imul(ah4, bl1)) | 0;
-    hi = (hi + Math.imul(ah4, bh1)) | 0;
-    lo = (lo + Math.imul(al3, bl2)) | 0;
-    mid = (mid + Math.imul(al3, bh2)) | 0;
-    mid = (mid + Math.imul(ah3, bl2)) | 0;
-    hi = (hi + Math.imul(ah3, bh2)) | 0;
-    lo = (lo + Math.imul(al2, bl3)) | 0;
-    mid = (mid + Math.imul(al2, bh3)) | 0;
-    mid = (mid + Math.imul(ah2, bl3)) | 0;
-    hi = (hi + Math.imul(ah2, bh3)) | 0;
-    lo = (lo + Math.imul(al1, bl4)) | 0;
-    mid = (mid + Math.imul(al1, bh4)) | 0;
-    mid = (mid + Math.imul(ah1, bl4)) | 0;
-    hi = (hi + Math.imul(ah1, bh4)) | 0;
-    lo = (lo + Math.imul(al0, bl5)) | 0;
-    mid = (mid + Math.imul(al0, bh5)) | 0;
-    mid = (mid + Math.imul(ah0, bl5)) | 0;
-    hi = (hi + Math.imul(ah0, bh5)) | 0;
-    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
-    w5 &= 0x3ffffff;
-    /* k = 6 */
-    lo = Math.imul(al6, bl0);
-    mid = Math.imul(al6, bh0);
-    mid = (mid + Math.imul(ah6, bl0)) | 0;
-    hi = Math.imul(ah6, bh0);
-    lo = (lo + Math.imul(al5, bl1)) | 0;
-    mid = (mid + Math.imul(al5, bh1)) | 0;
-    mid = (mid + Math.imul(ah5, bl1)) | 0;
-    hi = (hi + Math.imul(ah5, bh1)) | 0;
-    lo = (lo + Math.imul(al4, bl2)) | 0;
-    mid = (mid + Math.imul(al4, bh2)) | 0;
-    mid = (mid + Math.imul(ah4, bl2)) | 0;
-    hi = (hi + Math.imul(ah4, bh2)) | 0;
-    lo = (lo + Math.imul(al3, bl3)) | 0;
-    mid = (mid + Math.imul(al3, bh3)) | 0;
-    mid = (mid + Math.imul(ah3, bl3)) | 0;
-    hi = (hi + Math.imul(ah3, bh3)) | 0;
-    lo = (lo + Math.imul(al2, bl4)) | 0;
-    mid = (mid + Math.imul(al2, bh4)) | 0;
-    mid = (mid + Math.imul(ah2, bl4)) | 0;
-    hi = (hi + Math.imul(ah2, bh4)) | 0;
-    lo = (lo + Math.imul(al1, bl5)) | 0;
-    mid = (mid + Math.imul(al1, bh5)) | 0;
-    mid = (mid + Math.imul(ah1, bl5)) | 0;
-    hi = (hi + Math.imul(ah1, bh5)) | 0;
-    lo = (lo + Math.imul(al0, bl6)) | 0;
-    mid = (mid + Math.imul(al0, bh6)) | 0;
-    mid = (mid + Math.imul(ah0, bl6)) | 0;
-    hi = (hi + Math.imul(ah0, bh6)) | 0;
-    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
-    w6 &= 0x3ffffff;
-    /* k = 7 */
-    lo = Math.imul(al7, bl0);
-    mid = Math.imul(al7, bh0);
-    mid = (mid + Math.imul(ah7, bl0)) | 0;
-    hi = Math.imul(ah7, bh0);
-    lo = (lo + Math.imul(al6, bl1)) | 0;
-    mid = (mid + Math.imul(al6, bh1)) | 0;
-    mid = (mid + Math.imul(ah6, bl1)) | 0;
-    hi = (hi + Math.imul(ah6, bh1)) | 0;
-    lo = (lo + Math.imul(al5, bl2)) | 0;
-    mid = (mid + Math.imul(al5, bh2)) | 0;
-    mid = (mid + Math.imul(ah5, bl2)) | 0;
-    hi = (hi + Math.imul(ah5, bh2)) | 0;
-    lo = (lo + Math.imul(al4, bl3)) | 0;
-    mid = (mid + Math.imul(al4, bh3)) | 0;
-    mid = (mid + Math.imul(ah4, bl3)) | 0;
-    hi = (hi + Math.imul(ah4, bh3)) | 0;
-    lo = (lo + Math.imul(al3, bl4)) | 0;
-    mid = (mid + Math.imul(al3, bh4)) | 0;
-    mid = (mid + Math.imul(ah3, bl4)) | 0;
-    hi = (hi + Math.imul(ah3, bh4)) | 0;
-    lo = (lo + Math.imul(al2, bl5)) | 0;
-    mid = (mid + Math.imul(al2, bh5)) | 0;
-    mid = (mid + Math.imul(ah2, bl5)) | 0;
-    hi = (hi + Math.imul(ah2, bh5)) | 0;
-    lo = (lo + Math.imul(al1, bl6)) | 0;
-    mid = (mid + Math.imul(al1, bh6)) | 0;
-    mid = (mid + Math.imul(ah1, bl6)) | 0;
-    hi = (hi + Math.imul(ah1, bh6)) | 0;
-    lo = (lo + Math.imul(al0, bl7)) | 0;
-    mid = (mid + Math.imul(al0, bh7)) | 0;
-    mid = (mid + Math.imul(ah0, bl7)) | 0;
-    hi = (hi + Math.imul(ah0, bh7)) | 0;
-    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
-    w7 &= 0x3ffffff;
-    /* k = 8 */
-    lo = Math.imul(al8, bl0);
-    mid = Math.imul(al8, bh0);
-    mid = (mid + Math.imul(ah8, bl0)) | 0;
-    hi = Math.imul(ah8, bh0);
-    lo = (lo + Math.imul(al7, bl1)) | 0;
-    mid = (mid + Math.imul(al7, bh1)) | 0;
-    mid = (mid + Math.imul(ah7, bl1)) | 0;
-    hi = (hi + Math.imul(ah7, bh1)) | 0;
-    lo = (lo + Math.imul(al6, bl2)) | 0;
-    mid = (mid + Math.imul(al6, bh2)) | 0;
-    mid = (mid + Math.imul(ah6, bl2)) | 0;
-    hi = (hi + Math.imul(ah6, bh2)) | 0;
-    lo = (lo + Math.imul(al5, bl3)) | 0;
-    mid = (mid + Math.imul(al5, bh3)) | 0;
-    mid = (mid + Math.imul(ah5, bl3)) | 0;
-    hi = (hi + Math.imul(ah5, bh3)) | 0;
-    lo = (lo + Math.imul(al4, bl4)) | 0;
-    mid = (mid + Math.imul(al4, bh4)) | 0;
-    mid = (mid + Math.imul(ah4, bl4)) | 0;
-    hi = (hi + Math.imul(ah4, bh4)) | 0;
-    lo = (lo + Math.imul(al3, bl5)) | 0;
-    mid = (mid + Math.imul(al3, bh5)) | 0;
-    mid = (mid + Math.imul(ah3, bl5)) | 0;
-    hi = (hi + Math.imul(ah3, bh5)) | 0;
-    lo = (lo + Math.imul(al2, bl6)) | 0;
-    mid = (mid + Math.imul(al2, bh6)) | 0;
-    mid = (mid + Math.imul(ah2, bl6)) | 0;
-    hi = (hi + Math.imul(ah2, bh6)) | 0;
-    lo = (lo + Math.imul(al1, bl7)) | 0;
-    mid = (mid + Math.imul(al1, bh7)) | 0;
-    mid = (mid + Math.imul(ah1, bl7)) | 0;
-    hi = (hi + Math.imul(ah1, bh7)) | 0;
-    lo = (lo + Math.imul(al0, bl8)) | 0;
-    mid = (mid + Math.imul(al0, bh8)) | 0;
-    mid = (mid + Math.imul(ah0, bl8)) | 0;
-    hi = (hi + Math.imul(ah0, bh8)) | 0;
-    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
-    w8 &= 0x3ffffff;
-    /* k = 9 */
-    lo = Math.imul(al9, bl0);
-    mid = Math.imul(al9, bh0);
-    mid = (mid + Math.imul(ah9, bl0)) | 0;
-    hi = Math.imul(ah9, bh0);
-    lo = (lo + Math.imul(al8, bl1)) | 0;
-    mid = (mid + Math.imul(al8, bh1)) | 0;
-    mid = (mid + Math.imul(ah8, bl1)) | 0;
-    hi = (hi + Math.imul(ah8, bh1)) | 0;
-    lo = (lo + Math.imul(al7, bl2)) | 0;
-    mid = (mid + Math.imul(al7, bh2)) | 0;
-    mid = (mid + Math.imul(ah7, bl2)) | 0;
-    hi = (hi + Math.imul(ah7, bh2)) | 0;
-    lo = (lo + Math.imul(al6, bl3)) | 0;
-    mid = (mid + Math.imul(al6, bh3)) | 0;
-    mid = (mid + Math.imul(ah6, bl3)) | 0;
-    hi = (hi + Math.imul(ah6, bh3)) | 0;
-    lo = (lo + Math.imul(al5, bl4)) | 0;
-    mid = (mid + Math.imul(al5, bh4)) | 0;
-    mid = (mid + Math.imul(ah5, bl4)) | 0;
-    hi = (hi + Math.imul(ah5, bh4)) | 0;
-    lo = (lo + Math.imul(al4, bl5)) | 0;
-    mid = (mid + Math.imul(al4, bh5)) | 0;
-    mid = (mid + Math.imul(ah4, bl5)) | 0;
-    hi = (hi + Math.imul(ah4, bh5)) | 0;
-    lo = (lo + Math.imul(al3, bl6)) | 0;
-    mid = (mid + Math.imul(al3, bh6)) | 0;
-    mid = (mid + Math.imul(ah3, bl6)) | 0;
-    hi = (hi + Math.imul(ah3, bh6)) | 0;
-    lo = (lo + Math.imul(al2, bl7)) | 0;
-    mid = (mid + Math.imul(al2, bh7)) | 0;
-    mid = (mid + Math.imul(ah2, bl7)) | 0;
-    hi = (hi + Math.imul(ah2, bh7)) | 0;
-    lo = (lo + Math.imul(al1, bl8)) | 0;
-    mid = (mid + Math.imul(al1, bh8)) | 0;
-    mid = (mid + Math.imul(ah1, bl8)) | 0;
-    hi = (hi + Math.imul(ah1, bh8)) | 0;
-    lo = (lo + Math.imul(al0, bl9)) | 0;
-    mid = (mid + Math.imul(al0, bh9)) | 0;
-    mid = (mid + Math.imul(ah0, bl9)) | 0;
-    hi = (hi + Math.imul(ah0, bh9)) | 0;
-    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
-    w9 &= 0x3ffffff;
-    /* k = 10 */
-    lo = Math.imul(al9, bl1);
-    mid = Math.imul(al9, bh1);
-    mid = (mid + Math.imul(ah9, bl1)) | 0;
-    hi = Math.imul(ah9, bh1);
-    lo = (lo + Math.imul(al8, bl2)) | 0;
-    mid = (mid + Math.imul(al8, bh2)) | 0;
-    mid = (mid + Math.imul(ah8, bl2)) | 0;
-    hi = (hi + Math.imul(ah8, bh2)) | 0;
-    lo = (lo + Math.imul(al7, bl3)) | 0;
-    mid = (mid + Math.imul(al7, bh3)) | 0;
-    mid = (mid + Math.imul(ah7, bl3)) | 0;
-    hi = (hi + Math.imul(ah7, bh3)) | 0;
-    lo = (lo + Math.imul(al6, bl4)) | 0;
-    mid = (mid + Math.imul(al6, bh4)) | 0;
-    mid = (mid + Math.imul(ah6, bl4)) | 0;
-    hi = (hi + Math.imul(ah6, bh4)) | 0;
-    lo = (lo + Math.imul(al5, bl5)) | 0;
-    mid = (mid + Math.imul(al5, bh5)) | 0;
-    mid = (mid + Math.imul(ah5, bl5)) | 0;
-    hi = (hi + Math.imul(ah5, bh5)) | 0;
-    lo = (lo + Math.imul(al4, bl6)) | 0;
-    mid = (mid + Math.imul(al4, bh6)) | 0;
-    mid = (mid + Math.imul(ah4, bl6)) | 0;
-    hi = (hi + Math.imul(ah4, bh6)) | 0;
-    lo = (lo + Math.imul(al3, bl7)) | 0;
-    mid = (mid + Math.imul(al3, bh7)) | 0;
-    mid = (mid + Math.imul(ah3, bl7)) | 0;
-    hi = (hi + Math.imul(ah3, bh7)) | 0;
-    lo = (lo + Math.imul(al2, bl8)) | 0;
-    mid = (mid + Math.imul(al2, bh8)) | 0;
-    mid = (mid + Math.imul(ah2, bl8)) | 0;
-    hi = (hi + Math.imul(ah2, bh8)) | 0;
-    lo = (lo + Math.imul(al1, bl9)) | 0;
-    mid = (mid + Math.imul(al1, bh9)) | 0;
-    mid = (mid + Math.imul(ah1, bl9)) | 0;
-    hi = (hi + Math.imul(ah1, bh9)) | 0;
-    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
-    w10 &= 0x3ffffff;
-    /* k = 11 */
-    lo = Math.imul(al9, bl2);
-    mid = Math.imul(al9, bh2);
-    mid = (mid + Math.imul(ah9, bl2)) | 0;
-    hi = Math.imul(ah9, bh2);
-    lo = (lo + Math.imul(al8, bl3)) | 0;
-    mid = (mid + Math.imul(al8, bh3)) | 0;
-    mid = (mid + Math.imul(ah8, bl3)) | 0;
-    hi = (hi + Math.imul(ah8, bh3)) | 0;
-    lo = (lo + Math.imul(al7, bl4)) | 0;
-    mid = (mid + Math.imul(al7, bh4)) | 0;
-    mid = (mid + Math.imul(ah7, bl4)) | 0;
-    hi = (hi + Math.imul(ah7, bh4)) | 0;
-    lo = (lo + Math.imul(al6, bl5)) | 0;
-    mid = (mid + Math.imul(al6, bh5)) | 0;
-    mid = (mid + Math.imul(ah6, bl5)) | 0;
-    hi = (hi + Math.imul(ah6, bh5)) | 0;
-    lo = (lo + Math.imul(al5, bl6)) | 0;
-    mid = (mid + Math.imul(al5, bh6)) | 0;
-    mid = (mid + Math.imul(ah5, bl6)) | 0;
-    hi = (hi + Math.imul(ah5, bh6)) | 0;
-    lo = (lo + Math.imul(al4, bl7)) | 0;
-    mid = (mid + Math.imul(al4, bh7)) | 0;
-    mid = (mid + Math.imul(ah4, bl7)) | 0;
-    hi = (hi + Math.imul(ah4, bh7)) | 0;
-    lo = (lo + Math.imul(al3, bl8)) | 0;
-    mid = (mid + Math.imul(al3, bh8)) | 0;
-    mid = (mid + Math.imul(ah3, bl8)) | 0;
-    hi = (hi + Math.imul(ah3, bh8)) | 0;
-    lo = (lo + Math.imul(al2, bl9)) | 0;
-    mid = (mid + Math.imul(al2, bh9)) | 0;
-    mid = (mid + Math.imul(ah2, bl9)) | 0;
-    hi = (hi + Math.imul(ah2, bh9)) | 0;
-    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
-    w11 &= 0x3ffffff;
-    /* k = 12 */
-    lo = Math.imul(al9, bl3);
-    mid = Math.imul(al9, bh3);
-    mid = (mid + Math.imul(ah9, bl3)) | 0;
-    hi = Math.imul(ah9, bh3);
-    lo = (lo + Math.imul(al8, bl4)) | 0;
-    mid = (mid + Math.imul(al8, bh4)) | 0;
-    mid = (mid + Math.imul(ah8, bl4)) | 0;
-    hi = (hi + Math.imul(ah8, bh4)) | 0;
-    lo = (lo + Math.imul(al7, bl5)) | 0;
-    mid = (mid + Math.imul(al7, bh5)) | 0;
-    mid = (mid + Math.imul(ah7, bl5)) | 0;
-    hi = (hi + Math.imul(ah7, bh5)) | 0;
-    lo = (lo + Math.imul(al6, bl6)) | 0;
-    mid = (mid + Math.imul(al6, bh6)) | 0;
-    mid = (mid + Math.imul(ah6, bl6)) | 0;
-    hi = (hi + Math.imul(ah6, bh6)) | 0;
-    lo = (lo + Math.imul(al5, bl7)) | 0;
-    mid = (mid + Math.imul(al5, bh7)) | 0;
-    mid = (mid + Math.imul(ah5, bl7)) | 0;
-    hi = (hi + Math.imul(ah5, bh7)) | 0;
-    lo = (lo + Math.imul(al4, bl8)) | 0;
-    mid = (mid + Math.imul(al4, bh8)) | 0;
-    mid = (mid + Math.imul(ah4, bl8)) | 0;
-    hi = (hi + Math.imul(ah4, bh8)) | 0;
-    lo = (lo + Math.imul(al3, bl9)) | 0;
-    mid = (mid + Math.imul(al3, bh9)) | 0;
-    mid = (mid + Math.imul(ah3, bl9)) | 0;
-    hi = (hi + Math.imul(ah3, bh9)) | 0;
-    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
-    w12 &= 0x3ffffff;
-    /* k = 13 */
-    lo = Math.imul(al9, bl4);
-    mid = Math.imul(al9, bh4);
-    mid = (mid + Math.imul(ah9, bl4)) | 0;
-    hi = Math.imul(ah9, bh4);
-    lo = (lo + Math.imul(al8, bl5)) | 0;
-    mid = (mid + Math.imul(al8, bh5)) | 0;
-    mid = (mid + Math.imul(ah8, bl5)) | 0;
-    hi = (hi + Math.imul(ah8, bh5)) | 0;
-    lo = (lo + Math.imul(al7, bl6)) | 0;
-    mid = (mid + Math.imul(al7, bh6)) | 0;
-    mid = (mid + Math.imul(ah7, bl6)) | 0;
-    hi = (hi + Math.imul(ah7, bh6)) | 0;
-    lo = (lo + Math.imul(al6, bl7)) | 0;
-    mid = (mid + Math.imul(al6, bh7)) | 0;
-    mid = (mid + Math.imul(ah6, bl7)) | 0;
-    hi = (hi + Math.imul(ah6, bh7)) | 0;
-    lo = (lo + Math.imul(al5, bl8)) | 0;
-    mid = (mid + Math.imul(al5, bh8)) | 0;
-    mid = (mid + Math.imul(ah5, bl8)) | 0;
-    hi = (hi + Math.imul(ah5, bh8)) | 0;
-    lo = (lo + Math.imul(al4, bl9)) | 0;
-    mid = (mid + Math.imul(al4, bh9)) | 0;
-    mid = (mid + Math.imul(ah4, bl9)) | 0;
-    hi = (hi + Math.imul(ah4, bh9)) | 0;
-    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
-    w13 &= 0x3ffffff;
-    /* k = 14 */
-    lo = Math.imul(al9, bl5);
-    mid = Math.imul(al9, bh5);
-    mid = (mid + Math.imul(ah9, bl5)) | 0;
-    hi = Math.imul(ah9, bh5);
-    lo = (lo + Math.imul(al8, bl6)) | 0;
-    mid = (mid + Math.imul(al8, bh6)) | 0;
-    mid = (mid + Math.imul(ah8, bl6)) | 0;
-    hi = (hi + Math.imul(ah8, bh6)) | 0;
-    lo = (lo + Math.imul(al7, bl7)) | 0;
-    mid = (mid + Math.imul(al7, bh7)) | 0;
-    mid = (mid + Math.imul(ah7, bl7)) | 0;
-    hi = (hi + Math.imul(ah7, bh7)) | 0;
-    lo = (lo + Math.imul(al6, bl8)) | 0;
-    mid = (mid + Math.imul(al6, bh8)) | 0;
-    mid = (mid + Math.imul(ah6, bl8)) | 0;
-    hi = (hi + Math.imul(ah6, bh8)) | 0;
-    lo = (lo + Math.imul(al5, bl9)) | 0;
-    mid = (mid + Math.imul(al5, bh9)) | 0;
-    mid = (mid + Math.imul(ah5, bl9)) | 0;
-    hi = (hi + Math.imul(ah5, bh9)) | 0;
-    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
-    w14 &= 0x3ffffff;
-    /* k = 15 */
-    lo = Math.imul(al9, bl6);
-    mid = Math.imul(al9, bh6);
-    mid = (mid + Math.imul(ah9, bl6)) | 0;
-    hi = Math.imul(ah9, bh6);
-    lo = (lo + Math.imul(al8, bl7)) | 0;
-    mid = (mid + Math.imul(al8, bh7)) | 0;
-    mid = (mid + Math.imul(ah8, bl7)) | 0;
-    hi = (hi + Math.imul(ah8, bh7)) | 0;
-    lo = (lo + Math.imul(al7, bl8)) | 0;
-    mid = (mid + Math.imul(al7, bh8)) | 0;
-    mid = (mid + Math.imul(ah7, bl8)) | 0;
-    hi = (hi + Math.imul(ah7, bh8)) | 0;
-    lo = (lo + Math.imul(al6, bl9)) | 0;
-    mid = (mid + Math.imul(al6, bh9)) | 0;
-    mid = (mid + Math.imul(ah6, bl9)) | 0;
-    hi = (hi + Math.imul(ah6, bh9)) | 0;
-    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
-    w15 &= 0x3ffffff;
-    /* k = 16 */
-    lo = Math.imul(al9, bl7);
-    mid = Math.imul(al9, bh7);
-    mid = (mid + Math.imul(ah9, bl7)) | 0;
-    hi = Math.imul(ah9, bh7);
-    lo = (lo + Math.imul(al8, bl8)) | 0;
-    mid = (mid + Math.imul(al8, bh8)) | 0;
-    mid = (mid + Math.imul(ah8, bl8)) | 0;
-    hi = (hi + Math.imul(ah8, bh8)) | 0;
-    lo = (lo + Math.imul(al7, bl9)) | 0;
-    mid = (mid + Math.imul(al7, bh9)) | 0;
-    mid = (mid + Math.imul(ah7, bl9)) | 0;
-    hi = (hi + Math.imul(ah7, bh9)) | 0;
-    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
-    w16 &= 0x3ffffff;
-    /* k = 17 */
-    lo = Math.imul(al9, bl8);
-    mid = Math.imul(al9, bh8);
-    mid = (mid + Math.imul(ah9, bl8)) | 0;
-    hi = Math.imul(ah9, bh8);
-    lo = (lo + Math.imul(al8, bl9)) | 0;
-    mid = (mid + Math.imul(al8, bh9)) | 0;
-    mid = (mid + Math.imul(ah8, bl9)) | 0;
-    hi = (hi + Math.imul(ah8, bh9)) | 0;
-    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
-    w17 &= 0x3ffffff;
-    /* k = 18 */
-    lo = Math.imul(al9, bl9);
-    mid = Math.imul(al9, bh9);
-    mid = (mid + Math.imul(ah9, bl9)) | 0;
-    hi = Math.imul(ah9, bh9);
-    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
-    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
-    w18 &= 0x3ffffff;
-    o[0] = w0;
-    o[1] = w1;
-    o[2] = w2;
-    o[3] = w3;
-    o[4] = w4;
-    o[5] = w5;
-    o[6] = w6;
-    o[7] = w7;
-    o[8] = w8;
-    o[9] = w9;
-    o[10] = w10;
-    o[11] = w11;
-    o[12] = w12;
-    o[13] = w13;
-    o[14] = w14;
-    o[15] = w15;
-    o[16] = w16;
-    o[17] = w17;
-    o[18] = w18;
-    if (c !== 0) {
-      o[19] = c;
-      out.length++;
-    }
-    return out;
-  };
-
-  // Polyfill comb
-  if (!Math.imul) {
-    comb10MulTo = smallMulTo;
-  }
+}).call(this,require("buffer").Buffer)
+},{"buffer":5}],98:[function(require,module,exports){
+var OPS = require('bitcoin-ops')
 
-  function bigMulTo (self, num, out) {
-    out.negative = num.negative ^ self.negative;
-    out.length = self.length + num.length;
+function encodingLength (i) {
+  return i < OPS.OP_PUSHDATA1 ? 1
+  : i <= 0xff ? 2
+  : i <= 0xffff ? 3
+  : 5
+}
 
-    var carry = 0;
-    var hncarry = 0;
-    for (var k = 0; k < out.length - 1; k++) {
-      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
-      // note that ncarry could be >= 0x3ffffff
-      var ncarry = hncarry;
-      hncarry = 0;
-      var rword = carry & 0x3ffffff;
-      var maxJ = Math.min(k, num.length - 1);
-      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
-        var i = k - j;
-        var a = self.words[i] | 0;
-        var b = num.words[j] | 0;
-        var r = a * b;
+function encode (buffer, number, offset) {
+  var size = encodingLength(number)
 
-        var lo = r & 0x3ffffff;
-        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
-        lo = (lo + rword) | 0;
-        rword = lo & 0x3ffffff;
-        ncarry = (ncarry + (lo >>> 26)) | 0;
+  // ~6 bit
+  if (size === 1) {
+    buffer.writeUInt8(number, offset)
 
-        hncarry += ncarry >>> 26;
-        ncarry &= 0x3ffffff;
-      }
-      out.words[k] = rword;
-      carry = ncarry;
-      ncarry = hncarry;
-    }
-    if (carry !== 0) {
-      out.words[k] = carry;
-    } else {
-      out.length--;
-    }
+  // 8 bit
+  } else if (size === 2) {
+    buffer.writeUInt8(OPS.OP_PUSHDATA1, offset)
+    buffer.writeUInt8(number, offset + 1)
 
-    return out.strip();
-  }
+  // 16 bit
+  } else if (size === 3) {
+    buffer.writeUInt8(OPS.OP_PUSHDATA2, offset)
+    buffer.writeUInt16LE(number, offset + 1)
 
-  function jumboMulTo (self, num, out) {
-    var fftm = new FFTM();
-    return fftm.mulp(self, num, out);
+  // 32 bit
+  } else {
+    buffer.writeUInt8(OPS.OP_PUSHDATA4, offset)
+    buffer.writeUInt32LE(number, offset + 1)
   }
 
-  BN.prototype.mulTo = function mulTo (num, out) {
-    var res;
-    var len = this.length + num.length;
-    if (this.length === 10 && num.length === 10) {
-      res = comb10MulTo(this, num, out);
-    } else if (len < 63) {
-      res = smallMulTo(this, num, out);
-    } else if (len < 1024) {
-      res = bigMulTo(this, num, out);
-    } else {
-      res = jumboMulTo(this, num, out);
-    }
+  return size
+}
 
-    return res;
-  };
+function decode (buffer, offset) {
+  var opcode = buffer.readUInt8(offset)
+  var number, size
 
-  // Cooley-Tukey algorithm for FFT
-  // slightly revisited to rely on looping instead of recursion
+  // ~6 bit
+  if (opcode < OPS.OP_PUSHDATA1) {
+    number = opcode
+    size = 1
 
-  function FFTM (x, y) {
-    this.x = x;
-    this.y = y;
-  }
+  // 8 bit
+  } else if (opcode === OPS.OP_PUSHDATA1) {
+    if (offset + 2 > buffer.length) return null
+    number = buffer.readUInt8(offset + 1)
+    size = 2
 
-  FFTM.prototype.makeRBT = function makeRBT (N) {
-    var t = new Array(N);
-    var l = BN.prototype._countBits(N) - 1;
-    for (var i = 0; i < N; i++) {
-      t[i] = this.revBin(i, l, N);
-    }
+  // 16 bit
+  } else if (opcode === OPS.OP_PUSHDATA2) {
+    if (offset + 3 > buffer.length) return null
+    number = buffer.readUInt16LE(offset + 1)
+    size = 3
 
-    return t;
-  };
+  // 32 bit
+  } else {
+    if (offset + 5 > buffer.length) return null
+    if (opcode !== OPS.OP_PUSHDATA4) throw new Error('Unexpected opcode')
 
-  // Returns binary-reversed representation of `x`
-  FFTM.prototype.revBin = function revBin (x, l, N) {
-    if (x === 0 || x === N - 1) return x;
+    number = buffer.readUInt32LE(offset + 1)
+    size = 5
+  }
 
-    var rb = 0;
-    for (var i = 0; i < l; i++) {
-      rb |= (x & 1) << (l - i - 1);
-      x >>= 1;
-    }
+  return {
+    opcode: opcode,
+    number: number,
+    size: size
+  }
+}
 
-    return rb;
-  };
+module.exports = {
+  encodingLength: encodingLength,
+  encode: encode,
+  decode: decode
+}
 
-  // Performs "tweedling" phase, therefore 'emulating'
-  // behaviour of the recursive algorithm
-  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
-    for (var i = 0; i < N; i++) {
-      rtws[i] = rws[rbt[i]];
-      itws[i] = iws[rbt[i]];
-    }
-  };
+},{"bitcoin-ops":42}],99:[function(require,module,exports){
+(function (process,global){
+'use strict'
 
-  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
-    this.permute(rbt, rws, iws, rtws, itws, N);
+function oldBrowser () {
+  throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11')
+}
 
-    for (var s = 1; s < N; s <<= 1) {
-      var l = s << 1;
+var Buffer = require('safe-buffer').Buffer
+var crypto = global.crypto || global.msCrypto
 
-      var rtwdf = Math.cos(2 * Math.PI / l);
-      var itwdf = Math.sin(2 * Math.PI / l);
+if (crypto && crypto.getRandomValues) {
+  module.exports = randomBytes
+} else {
+  module.exports = oldBrowser
+}
 
-      for (var p = 0; p < N; p += l) {
-        var rtwdf_ = rtwdf;
-        var itwdf_ = itwdf;
+function randomBytes (size, cb) {
+  // phantomjs needs to throw
+  if (size > 65536) throw new Error('requested too many random bytes')
+  // in case browserify  isn't using the Uint8Array version
+  var rawBytes = new global.Uint8Array(size)
 
-        for (var j = 0; j < s; j++) {
-          var re = rtws[p + j];
-          var ie = itws[p + j];
+  // This will not work in older browsers.
+  // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
+  if (size > 0) {  // getRandomValues fails on IE if size == 0
+    crypto.getRandomValues(rawBytes)
+  }
 
-          var ro = rtws[p + j + s];
-          var io = itws[p + j + s];
+  // XXX: phantomjs doesn't like a buffer being passed here
+  var bytes = Buffer.from(rawBytes.buffer)
 
-          var rx = rtwdf_ * ro - itwdf_ * io;
+  if (typeof cb === 'function') {
+    return process.nextTick(function () {
+      cb(null, bytes)
+    })
+  }
 
-          io = rtwdf_ * io + itwdf_ * ro;
-          ro = rx;
+  return bytes
+}
 
-          rtws[p + j] = re + ro;
-          itws[p + j] = ie + io;
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"_process":13,"safe-buffer":101}],100:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var inherits = require('inherits')
+var HashBase = require('hash-base')
 
-          rtws[p + j + s] = re - ro;
-          itws[p + j + s] = ie - io;
+function RIPEMD160 () {
+  HashBase.call(this, 64)
 
-          /* jshint maxdepth : false */
-          if (j !== l) {
-            rx = rtwdf * rtwdf_ - itwdf * itwdf_;
+  // state
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
+}
 
-            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
-            rtwdf_ = rx;
-          }
-        }
-      }
-    }
-  };
+inherits(RIPEMD160, HashBase)
 
-  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
-    var N = Math.max(m, n) | 1;
-    var odd = N & 1;
-    var i = 0;
-    for (N = N / 2 | 0; N; N = N >>> 1) {
-      i++;
-    }
+RIPEMD160.prototype._update = function () {
+  var m = new Array(16)
+  for (var i = 0; i < 16; ++i) m[i] = this._block.readInt32LE(i * 4)
 
-    return 1 << i + 1 + odd;
-  };
+  var al = this._a
+  var bl = this._b
+  var cl = this._c
+  var dl = this._d
+  var el = this._e
 
-  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
-    if (N <= 1) return;
+  // Mj = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
+  // K = 0x00000000
+  // Sj = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8
+  al = fn1(al, bl, cl, dl, el, m[0], 0x00000000, 11); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[1], 0x00000000, 14); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[2], 0x00000000, 15); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[3], 0x00000000, 12); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[4], 0x00000000, 5); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[5], 0x00000000, 8); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[6], 0x00000000, 7); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[7], 0x00000000, 9); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[8], 0x00000000, 11); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[9], 0x00000000, 13); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[10], 0x00000000, 14); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[11], 0x00000000, 15); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[12], 0x00000000, 6); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[13], 0x00000000, 7); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[14], 0x00000000, 9); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[15], 0x00000000, 8); cl = rotl(cl, 10)
 
-    for (var i = 0; i < N / 2; i++) {
-      var t = rws[i];
+  // Mj = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8
+  // K = 0x5a827999
+  // Sj = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12
+  el = fn2(el, al, bl, cl, dl, m[7], 0x5a827999, 7); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[4], 0x5a827999, 6); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[13], 0x5a827999, 8); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[1], 0x5a827999, 13); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[10], 0x5a827999, 11); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[6], 0x5a827999, 9); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[15], 0x5a827999, 7); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[3], 0x5a827999, 15); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[12], 0x5a827999, 7); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[0], 0x5a827999, 12); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[9], 0x5a827999, 15); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[5], 0x5a827999, 9); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[2], 0x5a827999, 11); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[14], 0x5a827999, 7); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[11], 0x5a827999, 13); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[8], 0x5a827999, 12); bl = rotl(bl, 10)
 
-      rws[i] = rws[N - i - 1];
-      rws[N - i - 1] = t;
+  // Mj = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12
+  // K = 0x6ed9eba1
+  // Sj = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5
+  dl = fn3(dl, el, al, bl, cl, m[3], 0x6ed9eba1, 11); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[10], 0x6ed9eba1, 13); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[14], 0x6ed9eba1, 6); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[4], 0x6ed9eba1, 7); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[9], 0x6ed9eba1, 14); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[15], 0x6ed9eba1, 9); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[8], 0x6ed9eba1, 13); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[1], 0x6ed9eba1, 15); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[2], 0x6ed9eba1, 14); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[7], 0x6ed9eba1, 8); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[0], 0x6ed9eba1, 13); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[6], 0x6ed9eba1, 6); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[13], 0x6ed9eba1, 5); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[11], 0x6ed9eba1, 12); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[5], 0x6ed9eba1, 7); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[12], 0x6ed9eba1, 5); al = rotl(al, 10)
 
-      t = iws[i];
+  // Mj = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2
+  // K = 0x8f1bbcdc
+  // Sj = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12
+  cl = fn4(cl, dl, el, al, bl, m[1], 0x8f1bbcdc, 11); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[9], 0x8f1bbcdc, 12); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[11], 0x8f1bbcdc, 14); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[10], 0x8f1bbcdc, 15); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[0], 0x8f1bbcdc, 14); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[8], 0x8f1bbcdc, 15); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[12], 0x8f1bbcdc, 9); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[4], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[13], 0x8f1bbcdc, 9); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[3], 0x8f1bbcdc, 14); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[7], 0x8f1bbcdc, 5); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[15], 0x8f1bbcdc, 6); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[14], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[5], 0x8f1bbcdc, 6); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[6], 0x8f1bbcdc, 5); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[2], 0x8f1bbcdc, 12); el = rotl(el, 10)
 
-      iws[i] = -iws[N - i - 1];
-      iws[N - i - 1] = -t;
-    }
-  };
+  // Mj = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+  // K = 0xa953fd4e
+  // Sj = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+  bl = fn5(bl, cl, dl, el, al, m[4], 0xa953fd4e, 9); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[0], 0xa953fd4e, 15); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[5], 0xa953fd4e, 5); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[9], 0xa953fd4e, 11); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[7], 0xa953fd4e, 6); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[12], 0xa953fd4e, 8); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[2], 0xa953fd4e, 13); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[10], 0xa953fd4e, 12); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[14], 0xa953fd4e, 5); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[1], 0xa953fd4e, 12); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[3], 0xa953fd4e, 13); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[8], 0xa953fd4e, 14); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[11], 0xa953fd4e, 11); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[6], 0xa953fd4e, 8); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[15], 0xa953fd4e, 5); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[13], 0xa953fd4e, 6); dl = rotl(dl, 10)
 
-  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
-    var carry = 0;
-    for (var i = 0; i < N / 2; i++) {
-      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
-        Math.round(ws[2 * i] / N) +
-        carry;
+  var ar = this._a
+  var br = this._b
+  var cr = this._c
+  var dr = this._d
+  var er = this._e
 
-      ws[i] = w & 0x3ffffff;
+  // M'j = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12
+  // K' = 0x50a28be6
+  // S'j = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6
+  ar = fn5(ar, br, cr, dr, er, m[5], 0x50a28be6, 8); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[14], 0x50a28be6, 9); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[7], 0x50a28be6, 9); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[0], 0x50a28be6, 11); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[9], 0x50a28be6, 13); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[2], 0x50a28be6, 15); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[11], 0x50a28be6, 15); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[4], 0x50a28be6, 5); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[13], 0x50a28be6, 7); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[6], 0x50a28be6, 7); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[15], 0x50a28be6, 8); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[8], 0x50a28be6, 11); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[1], 0x50a28be6, 14); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[10], 0x50a28be6, 14); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[3], 0x50a28be6, 12); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[12], 0x50a28be6, 6); cr = rotl(cr, 10)
 
-      if (w < 0x4000000) {
-        carry = 0;
-      } else {
-        carry = w / 0x4000000 | 0;
-      }
-    }
+  // M'j = 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2
+  // K' = 0x5c4dd124
+  // S'j = 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11
+  er = fn4(er, ar, br, cr, dr, m[6], 0x5c4dd124, 9); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[11], 0x5c4dd124, 13); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[3], 0x5c4dd124, 15); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[7], 0x5c4dd124, 7); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[0], 0x5c4dd124, 12); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[13], 0x5c4dd124, 8); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[5], 0x5c4dd124, 9); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[10], 0x5c4dd124, 11); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[14], 0x5c4dd124, 7); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[15], 0x5c4dd124, 7); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[8], 0x5c4dd124, 12); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[12], 0x5c4dd124, 7); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[4], 0x5c4dd124, 6); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[9], 0x5c4dd124, 15); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[1], 0x5c4dd124, 13); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[2], 0x5c4dd124, 11); br = rotl(br, 10)
 
-    return ws;
-  };
+  // M'j = 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13
+  // K' = 0x6d703ef3
+  // S'j = 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5
+  dr = fn3(dr, er, ar, br, cr, m[15], 0x6d703ef3, 9); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[5], 0x6d703ef3, 7); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[1], 0x6d703ef3, 15); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[3], 0x6d703ef3, 11); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[7], 0x6d703ef3, 8); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[14], 0x6d703ef3, 6); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[6], 0x6d703ef3, 6); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[9], 0x6d703ef3, 14); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[11], 0x6d703ef3, 12); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[8], 0x6d703ef3, 13); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[12], 0x6d703ef3, 5); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[2], 0x6d703ef3, 14); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[10], 0x6d703ef3, 13); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[0], 0x6d703ef3, 13); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[4], 0x6d703ef3, 7); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[13], 0x6d703ef3, 5); ar = rotl(ar, 10)
 
-  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
-    var carry = 0;
-    for (var i = 0; i < len; i++) {
-      carry = carry + (ws[i] | 0);
+  // M'j = 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14
+  // K' = 0x7a6d76e9
+  // S'j = 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8
+  cr = fn2(cr, dr, er, ar, br, m[8], 0x7a6d76e9, 15); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[6], 0x7a6d76e9, 5); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[4], 0x7a6d76e9, 8); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[1], 0x7a6d76e9, 11); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[3], 0x7a6d76e9, 14); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[11], 0x7a6d76e9, 14); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[15], 0x7a6d76e9, 6); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[0], 0x7a6d76e9, 14); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[5], 0x7a6d76e9, 6); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[12], 0x7a6d76e9, 9); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[2], 0x7a6d76e9, 12); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[13], 0x7a6d76e9, 9); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[9], 0x7a6d76e9, 12); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[7], 0x7a6d76e9, 5); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[10], 0x7a6d76e9, 15); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[14], 0x7a6d76e9, 8); er = rotl(er, 10)
 
-      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
-      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
-    }
+  // M'j = 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+  // K' = 0x00000000
+  // S'j = 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+  br = fn1(br, cr, dr, er, ar, m[12], 0x00000000, 8); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[15], 0x00000000, 5); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[10], 0x00000000, 12); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[4], 0x00000000, 9); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[1], 0x00000000, 12); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[5], 0x00000000, 5); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[8], 0x00000000, 14); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[7], 0x00000000, 6); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[6], 0x00000000, 8); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[2], 0x00000000, 13); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[13], 0x00000000, 6); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[14], 0x00000000, 5); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[0], 0x00000000, 15); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[3], 0x00000000, 13); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[9], 0x00000000, 11); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[11], 0x00000000, 11); dr = rotl(dr, 10)
 
-    // Pad with zeroes
-    for (i = 2 * len; i < N; ++i) {
-      rws[i] = 0;
-    }
+  // change state
+  var t = (this._b + cl + dr) | 0
+  this._b = (this._c + dl + er) | 0
+  this._c = (this._d + el + ar) | 0
+  this._d = (this._e + al + br) | 0
+  this._e = (this._a + bl + cr) | 0
+  this._a = t
+}
 
-    assert(carry === 0);
-    assert((carry & ~0x1fff) === 0);
-  };
+RIPEMD160.prototype._digest = function () {
+  // create padding and handle blocks
+  this._block[this._blockOffset++] = 0x80
+  if (this._blockOffset > 56) {
+    this._block.fill(0, this._blockOffset, 64)
+    this._update()
+    this._blockOffset = 0
+  }
 
-  FFTM.prototype.stub = function stub (N) {
-    var ph = new Array(N);
-    for (var i = 0; i < N; i++) {
-      ph[i] = 0;
-    }
+  this._block.fill(0, this._blockOffset, 56)
+  this._block.writeUInt32LE(this._length[0], 56)
+  this._block.writeUInt32LE(this._length[1], 60)
+  this._update()
 
-    return ph;
-  };
+  // produce result
+  var buffer = new Buffer(20)
+  buffer.writeInt32LE(this._a, 0)
+  buffer.writeInt32LE(this._b, 4)
+  buffer.writeInt32LE(this._c, 8)
+  buffer.writeInt32LE(this._d, 12)
+  buffer.writeInt32LE(this._e, 16)
+  return buffer
+}
 
-  FFTM.prototype.mulp = function mulp (x, y, out) {
-    var N = 2 * this.guessLen13b(x.length, y.length);
+function rotl (x, n) {
+  return (x << n) | (x >>> (32 - n))
+}
 
-    var rbt = this.makeRBT(N);
+function fn1 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
+}
 
-    var _ = this.stub(N);
+function fn2 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
+}
 
-    var rws = new Array(N);
-    var rwst = new Array(N);
-    var iwst = new Array(N);
+function fn3 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
+}
 
-    var nrws = new Array(N);
-    var nrwst = new Array(N);
-    var niwst = new Array(N);
+function fn4 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
+}
 
-    var rmws = out.words;
-    rmws.length = N;
+function fn5 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
+}
 
-    this.convert13b(x.words, x.length, rws, N);
-    this.convert13b(y.words, y.length, nrws, N);
+module.exports = RIPEMD160
 
-    this.transform(rws, _, rwst, iwst, N, rbt);
-    this.transform(nrws, _, nrwst, niwst, N, rbt);
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"hash-base":95,"inherits":96}],101:[function(require,module,exports){
+/* eslint-disable node/no-deprecated-api */
+var buffer = require('buffer')
+var Buffer = buffer.Buffer
 
-    for (var i = 0; i < N; i++) {
-      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
-      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
-      rwst[i] = rx;
-    }
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
+  }
+}
+if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
+  module.exports = buffer
+} else {
+  // Copy properties from require('buffer')
+  copyProps(buffer, exports)
+  exports.Buffer = SafeBuffer
+}
 
-    this.conjugate(rwst, iwst, N);
-    this.transform(rwst, iwst, rmws, _, N, rbt);
-    this.conjugate(rmws, _, N);
-    this.normalize13b(rmws, N);
+function SafeBuffer (arg, encodingOrOffset, length) {
+  return Buffer(arg, encodingOrOffset, length)
+}
 
-    out.negative = x.negative ^ y.negative;
-    out.length = x.length + y.length;
-    return out.strip();
-  };
+// Copy static methods from Buffer
+copyProps(Buffer, SafeBuffer)
 
-  // Multiply `this` by `num`
-  BN.prototype.mul = function mul (num) {
-    var out = new BN(null);
-    out.words = new Array(this.length + num.length);
-    return this.mulTo(num, out);
-  };
+SafeBuffer.from = function (arg, encodingOrOffset, length) {
+  if (typeof arg === 'number') {
+    throw new TypeError('Argument must not be a number')
+  }
+  return Buffer(arg, encodingOrOffset, length)
+}
 
-  // Multiply employing FFT
-  BN.prototype.mulf = function mulf (num) {
-    var out = new BN(null);
-    out.words = new Array(this.length + num.length);
-    return jumboMulTo(this, num, out);
-  };
+SafeBuffer.alloc = function (size, fill, encoding) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  var buf = Buffer(size)
+  if (fill !== undefined) {
+    if (typeof encoding === 'string') {
+      buf.fill(fill, encoding)
+    } else {
+      buf.fill(fill)
+    }
+  } else {
+    buf.fill(0)
+  }
+  return buf
+}
 
-  // In-place Multiplication
-  BN.prototype.imul = function imul (num) {
-    return this.clone().mulTo(num, this);
-  };
+SafeBuffer.allocUnsafe = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return Buffer(size)
+}
 
-  BN.prototype.imuln = function imuln (num) {
-    assert(typeof num === 'number');
-    assert(num < 0x4000000);
+SafeBuffer.allocUnsafeSlow = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return buffer.SlowBuffer(size)
+}
 
-    // Carry
-    var carry = 0;
-    for (var i = 0; i < this.length; i++) {
-      var w = (this.words[i] | 0) * num;
-      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
-      carry >>= 26;
-      carry += (w / 0x4000000) | 0;
-      // NOTE: lo is 27bit maximum
-      carry += lo >>> 26;
-      this.words[i] = lo & 0x3ffffff;
-    }
+},{"buffer":5}],102:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
 
-    if (carry !== 0) {
-      this.words[i] = carry;
-      this.length++;
-    }
+// prototype class for hash functions
+function Hash (blockSize, finalSize) {
+  this._block = Buffer.alloc(blockSize)
+  this._finalSize = finalSize
+  this._blockSize = blockSize
+  this._len = 0
+}
 
-    return this;
-  };
+Hash.prototype.update = function (data, enc) {
+  if (typeof data === 'string') {
+    enc = enc || 'utf8'
+    data = Buffer.from(data, enc)
+  }
 
-  BN.prototype.muln = function muln (num) {
-    return this.clone().imuln(num);
-  };
+  var block = this._block
+  var blockSize = this._blockSize
+  var length = data.length
+  var accum = this._len
 
-  // `this` * `this`
-  BN.prototype.sqr = function sqr () {
-    return this.mul(this);
-  };
+  for (var offset = 0; offset < length;) {
+    var assigned = accum % blockSize
+    var remainder = Math.min(length - offset, blockSize - assigned)
 
-  // `this` * `this` in-place
-  BN.prototype.isqr = function isqr () {
-    return this.imul(this.clone());
-  };
+    for (var i = 0; i < remainder; i++) {
+      block[assigned + i] = data[offset + i]
+    }
 
-  // Math.pow(`this`, `num`)
-  BN.prototype.pow = function pow (num) {
-    var w = toBitArray(num);
-    if (w.length === 0) return new BN(1);
+    accum += remainder
+    offset += remainder
 
-    // Skip leading zeroes
-    var res = this;
-    for (var i = 0; i < w.length; i++, res = res.sqr()) {
-      if (w[i] !== 0) break;
+    if ((accum % blockSize) === 0) {
+      this._update(block)
     }
+  }
 
-    if (++i < w.length) {
-      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
-        if (w[i] === 0) continue;
-
-        res = res.mul(q);
-      }
-    }
+  this._len += length
+  return this
+}
 
-    return res;
-  };
+Hash.prototype.digest = function (enc) {
+  var rem = this._len % this._blockSize
 
-  // Shift-left in-place
-  BN.prototype.iushln = function iushln (bits) {
-    assert(typeof bits === 'number' && bits >= 0);
-    var r = bits % 26;
-    var s = (bits - r) / 26;
-    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
-    var i;
+  this._block[rem] = 0x80
 
-    if (r !== 0) {
-      var carry = 0;
+  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
+  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
+  this._block.fill(0, rem + 1)
 
-      for (i = 0; i < this.length; i++) {
-        var newCarry = this.words[i] & carryMask;
-        var c = ((this.words[i] | 0) - newCarry) << r;
-        this.words[i] = c | carry;
-        carry = newCarry >>> (26 - r);
-      }
+  if (rem >= this._finalSize) {
+    this._update(this._block)
+    this._block.fill(0)
+  }
 
-      if (carry) {
-        this.words[i] = carry;
-        this.length++;
-      }
-    }
+  var bits = this._len * 8
 
-    if (s !== 0) {
-      for (i = this.length - 1; i >= 0; i--) {
-        this.words[i + s] = this.words[i];
-      }
+  // uint32
+  if (bits <= 0xffffffff) {
+    this._block.writeUInt32BE(bits, this._blockSize - 4)
 
-      for (i = 0; i < s; i++) {
-        this.words[i] = 0;
-      }
+  // uint64
+  } else {
+    var lowBits = (bits & 0xffffffff) >>> 0
+    var highBits = (bits - lowBits) / 0x100000000
 
-      this.length += s;
-    }
+    this._block.writeUInt32BE(highBits, this._blockSize - 8)
+    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
+  }
 
-    return this.strip();
-  };
+  this._update(this._block)
+  var hash = this._hash()
 
-  BN.prototype.ishln = function ishln (bits) {
-    // TODO(indutny): implement me
-    assert(this.negative === 0);
-    return this.iushln(bits);
-  };
+  return enc ? hash.toString(enc) : hash
+}
 
-  // Shift-right in-place
-  // NOTE: `hint` is a lowest bit before trailing zeroes
-  // NOTE: if `extended` is present - it will be filled with destroyed bits
-  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
-    assert(typeof bits === 'number' && bits >= 0);
-    var h;
-    if (hint) {
-      h = (hint - (hint % 26)) / 26;
-    } else {
-      h = 0;
-    }
+Hash.prototype._update = function () {
+  throw new Error('_update must be implemented by subclass')
+}
 
-    var r = bits % 26;
-    var s = Math.min((bits - r) / 26, this.length);
-    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
-    var maskedWords = extended;
+module.exports = Hash
 
-    h -= s;
-    h = Math.max(0, h);
+},{"safe-buffer":101}],103:[function(require,module,exports){
+var exports = module.exports = function SHA (algorithm) {
+  algorithm = algorithm.toLowerCase()
 
-    // Extended mode, copy masked part
-    if (maskedWords) {
-      for (var i = 0; i < s; i++) {
-        maskedWords.words[i] = this.words[i];
-      }
-      maskedWords.length = s;
-    }
+  var Algorithm = exports[algorithm]
+  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
 
-    if (s === 0) {
-      // No-op, we should not move anything at all
-    } else if (this.length > s) {
-      this.length -= s;
-      for (i = 0; i < this.length; i++) {
-        this.words[i] = this.words[i + s];
-      }
-    } else {
-      this.words[0] = 0;
-      this.length = 1;
-    }
+  return new Algorithm()
+}
 
-    var carry = 0;
-    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
-      var word = this.words[i] | 0;
-      this.words[i] = (carry << (26 - r)) | (word >>> r);
-      carry = word & mask;
-    }
+exports.sha = require('./sha')
+exports.sha1 = require('./sha1')
+exports.sha224 = require('./sha224')
+exports.sha256 = require('./sha256')
+exports.sha384 = require('./sha384')
+exports.sha512 = require('./sha512')
 
-    // Push carried bits as a mask
-    if (maskedWords && carry !== 0) {
-      maskedWords.words[maskedWords.length++] = carry;
-    }
+},{"./sha":104,"./sha1":105,"./sha224":106,"./sha256":107,"./sha384":108,"./sha512":109}],104:[function(require,module,exports){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
+ * in FIPS PUB 180-1
+ * This source code is derived from sha1.js of the same repository.
+ * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
+ * operation was added.
+ */
 
-    if (this.length === 0) {
-      this.words[0] = 0;
-      this.length = 1;
-    }
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-    return this.strip();
-  };
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
 
-  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
-    // TODO(indutny): implement me
-    assert(this.negative === 0);
-    return this.iushrn(bits, hint, extended);
-  };
+var W = new Array(80)
 
-  // Shift-left
-  BN.prototype.shln = function shln (bits) {
-    return this.clone().ishln(bits);
-  };
+function Sha () {
+  this.init()
+  this._w = W
 
-  BN.prototype.ushln = function ushln (bits) {
-    return this.clone().iushln(bits);
-  };
+  Hash.call(this, 64, 56)
+}
 
-  // Shift-right
-  BN.prototype.shrn = function shrn (bits) {
-    return this.clone().ishrn(bits);
-  };
+inherits(Sha, Hash)
 
-  BN.prototype.ushrn = function ushrn (bits) {
-    return this.clone().iushrn(bits);
-  };
+Sha.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
 
-  // Test if n bit is set
-  BN.prototype.testn = function testn (bit) {
-    assert(typeof bit === 'number' && bit >= 0);
-    var r = bit % 26;
-    var s = (bit - r) / 26;
-    var q = 1 << r;
+  return this
+}
 
-    // Fast case: bit is much higher than all existing words
-    if (this.length <= s) return false;
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
 
-    // Check bit and return
-    var w = this.words[s];
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
 
-    return !!(w & q);
-  };
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
 
-  // Return only lowers bits of number (in-place)
-  BN.prototype.imaskn = function imaskn (bits) {
-    assert(typeof bits === 'number' && bits >= 0);
-    var r = bits % 26;
-    var s = (bits - r) / 26;
+Sha.prototype._update = function (M) {
+  var W = this._w
 
-    assert(this.negative === 0, 'imaskn works only with positive numbers');
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
 
-    if (this.length <= s) {
-      return this;
-    }
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
 
-    if (r !== 0) {
-      s++;
-    }
-    this.length = Math.min(s, this.length);
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
 
-    if (r !== 0) {
-      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
-      this.words[this.length - 1] &= mask;
-    }
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
+  }
 
-    return this.strip();
-  };
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+}
 
-  // Return only lowers bits of number
-  BN.prototype.maskn = function maskn (bits) {
-    return this.clone().imaskn(bits);
-  };
+Sha.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(20)
 
-  // Add plain number `num` to `this`
-  BN.prototype.iaddn = function iaddn (num) {
-    assert(typeof num === 'number');
-    assert(num < 0x4000000);
-    if (num < 0) return this.isubn(-num);
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
 
-    // Possible sign change
-    if (this.negative !== 0) {
-      if (this.length === 1 && (this.words[0] | 0) < num) {
-        this.words[0] = num - (this.words[0] | 0);
-        this.negative = 0;
-        return this;
-      }
+  return H
+}
 
-      this.negative = 0;
-      this.isubn(num);
-      this.negative = 1;
-      return this;
-    }
+module.exports = Sha
 
-    // Add without checks
-    return this._iaddn(num);
-  };
+},{"./hash":102,"inherits":96,"safe-buffer":101}],105:[function(require,module,exports){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
+ * in FIPS PUB 180-1
+ * Version 2.1a Copyright Paul Johnston 2000 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for details.
+ */
 
-  BN.prototype._iaddn = function _iaddn (num) {
-    this.words[0] += num;
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-    // Carry
-    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
-      this.words[i] -= 0x4000000;
-      if (i === this.length - 1) {
-        this.words[i + 1] = 1;
-      } else {
-        this.words[i + 1]++;
-      }
-    }
-    this.length = Math.max(this.length, i + 1);
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
 
-    return this;
-  };
+var W = new Array(80)
 
-  // Subtract plain number `num` from `this`
-  BN.prototype.isubn = function isubn (num) {
-    assert(typeof num === 'number');
-    assert(num < 0x4000000);
-    if (num < 0) return this.iaddn(-num);
+function Sha1 () {
+  this.init()
+  this._w = W
 
-    if (this.negative !== 0) {
-      this.negative = 0;
-      this.iaddn(num);
-      this.negative = 1;
-      return this;
-    }
+  Hash.call(this, 64, 56)
+}
 
-    this.words[0] -= num;
+inherits(Sha1, Hash)
 
-    if (this.length === 1 && this.words[0] < 0) {
-      this.words[0] = -this.words[0];
-      this.negative = 1;
-    } else {
-      // Carry
-      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
-        this.words[i] += 0x4000000;
-        this.words[i + 1] -= 1;
-      }
-    }
+Sha1.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
 
-    return this.strip();
-  };
+  return this
+}
 
-  BN.prototype.addn = function addn (num) {
-    return this.clone().iaddn(num);
-  };
+function rotl1 (num) {
+  return (num << 1) | (num >>> 31)
+}
 
-  BN.prototype.subn = function subn (num) {
-    return this.clone().isubn(num);
-  };
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
 
-  BN.prototype.iabs = function iabs () {
-    this.negative = 0;
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
 
-    return this;
-  };
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
 
-  BN.prototype.abs = function abs () {
-    return this.clone().iabs();
-  };
+Sha1.prototype._update = function (M) {
+  var W = this._w
 
-  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
-    var len = num.length + shift;
-    var i;
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
 
-    this._expand(len);
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
 
-    var w;
-    var carry = 0;
-    for (i = 0; i < num.length; i++) {
-      w = (this.words[i + shift] | 0) + carry;
-      var right = (num.words[i] | 0) * mul;
-      w -= right & 0x3ffffff;
-      carry = (w >> 26) - ((right / 0x4000000) | 0);
-      this.words[i + shift] = w & 0x3ffffff;
-    }
-    for (; i < this.length - shift; i++) {
-      w = (this.words[i + shift] | 0) + carry;
-      carry = w >> 26;
-      this.words[i + shift] = w & 0x3ffffff;
-    }
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
 
-    if (carry === 0) return this.strip();
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
+  }
 
-    // Subtraction overflow
-    assert(carry === -1);
-    carry = 0;
-    for (i = 0; i < this.length; i++) {
-      w = -(this.words[i] | 0) + carry;
-      carry = w >> 26;
-      this.words[i] = w & 0x3ffffff;
-    }
-    this.negative = 1;
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+}
 
-    return this.strip();
-  };
+Sha1.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(20)
 
-  BN.prototype._wordDiv = function _wordDiv (num, mode) {
-    var shift = this.length - num.length;
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
 
-    var a = this.clone();
-    var b = num;
+  return H
+}
 
-    // Normalize
-    var bhi = b.words[b.length - 1] | 0;
-    var bhiBits = this._countBits(bhi);
-    shift = 26 - bhiBits;
-    if (shift !== 0) {
-      b = b.ushln(shift);
-      a.iushln(shift);
-      bhi = b.words[b.length - 1] | 0;
-    }
+module.exports = Sha1
 
-    // Initialize quotient
-    var m = a.length - b.length;
-    var q;
+},{"./hash":102,"inherits":96,"safe-buffer":101}],106:[function(require,module,exports){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
+ */
 
-    if (mode !== 'mod') {
-      q = new BN(null);
-      q.length = m + 1;
-      q.words = new Array(q.length);
-      for (var i = 0; i < q.length; i++) {
-        q.words[i] = 0;
-      }
-    }
+var inherits = require('inherits')
+var Sha256 = require('./sha256')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-    var diff = a.clone()._ishlnsubmul(b, 1, m);
-    if (diff.negative === 0) {
-      a = diff;
-      if (q) {
-        q.words[m] = 1;
-      }
-    }
+var W = new Array(64)
 
-    for (var j = m - 1; j >= 0; j--) {
-      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
-        (a.words[b.length + j - 1] | 0);
+function Sha224 () {
+  this.init()
 
-      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
-      // (0x7ffffff)
-      qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+  this._w = W // new Array(64)
 
-      a._ishlnsubmul(b, qj, j);
-      while (a.negative !== 0) {
-        qj--;
-        a.negative = 0;
-        a._ishlnsubmul(b, 1, j);
-        if (!a.isZero()) {
-          a.negative ^= 1;
-        }
-      }
-      if (q) {
-        q.words[j] = qj;
-      }
-    }
-    if (q) {
-      q.strip();
-    }
-    a.strip();
+  Hash.call(this, 64, 56)
+}
 
-    // Denormalize
-    if (mode !== 'div' && shift !== 0) {
-      a.iushrn(shift);
-    }
-
-    return {
-      div: q || null,
-      mod: a
-    };
-  };
+inherits(Sha224, Sha256)
 
-  // NOTE: 1) `mode` can be set to `mod` to request mod only,
-  //       to `div` to request div only, or be absent to
-  //       request both div & mod
-  //       2) `positive` is true if unsigned mod is requested
-  BN.prototype.divmod = function divmod (num, mode, positive) {
-    assert(!num.isZero());
+Sha224.prototype.init = function () {
+  this._a = 0xc1059ed8
+  this._b = 0x367cd507
+  this._c = 0x3070dd17
+  this._d = 0xf70e5939
+  this._e = 0xffc00b31
+  this._f = 0x68581511
+  this._g = 0x64f98fa7
+  this._h = 0xbefa4fa4
 
-    if (this.isZero()) {
-      return {
-        div: new BN(0),
-        mod: new BN(0)
-      };
-    }
+  return this
+}
 
-    var div, mod, res;
-    if (this.negative !== 0 && num.negative === 0) {
-      res = this.neg().divmod(num, mode);
+Sha224.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(28)
 
-      if (mode !== 'mod') {
-        div = res.div.neg();
-      }
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
 
-      if (mode !== 'div') {
-        mod = res.mod.neg();
-        if (positive && mod.negative !== 0) {
-          mod.iadd(num);
-        }
-      }
+  return H
+}
 
-      return {
-        div: div,
-        mod: mod
-      };
-    }
+module.exports = Sha224
 
-    if (this.negative === 0 && num.negative !== 0) {
-      res = this.divmod(num.neg(), mode);
+},{"./hash":102,"./sha256":107,"inherits":96,"safe-buffer":101}],107:[function(require,module,exports){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
+ */
 
-      if (mode !== 'mod') {
-        div = res.div.neg();
-      }
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-      return {
-        div: div,
-        mod: res.mod
-      };
-    }
+var K = [
+  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
+  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
+  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
+  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
+  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
+  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
+  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
+  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
+  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
+]
 
-    if ((this.negative & num.negative) !== 0) {
-      res = this.neg().divmod(num.neg(), mode);
+var W = new Array(64)
 
-      if (mode !== 'div') {
-        mod = res.mod.neg();
-        if (positive && mod.negative !== 0) {
-          mod.isub(num);
-        }
-      }
+function Sha256 () {
+  this.init()
 
-      return {
-        div: res.div,
-        mod: mod
-      };
-    }
+  this._w = W // new Array(64)
 
-    // Both numbers are positive at this point
+  Hash.call(this, 64, 56)
+}
 
-    // Strip both numbers to approximate shift value
-    if (num.length > this.length || this.cmp(num) < 0) {
-      return {
-        div: new BN(0),
-        mod: this
-      };
-    }
+inherits(Sha256, Hash)
 
-    // Very short reduction
-    if (num.length === 1) {
-      if (mode === 'div') {
-        return {
-          div: this.divn(num.words[0]),
-          mod: null
-        };
-      }
+Sha256.prototype.init = function () {
+  this._a = 0x6a09e667
+  this._b = 0xbb67ae85
+  this._c = 0x3c6ef372
+  this._d = 0xa54ff53a
+  this._e = 0x510e527f
+  this._f = 0x9b05688c
+  this._g = 0x1f83d9ab
+  this._h = 0x5be0cd19
 
-      if (mode === 'mod') {
-        return {
-          div: null,
-          mod: new BN(this.modn(num.words[0]))
-        };
-      }
+  return this
+}
 
-      return {
-        div: this.divn(num.words[0]),
-        mod: new BN(this.modn(num.words[0]))
-      };
-    }
+function ch (x, y, z) {
+  return z ^ (x & (y ^ z))
+}
 
-    return this._wordDiv(num, mode);
-  };
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
+}
 
-  // Find `this` / `num`
-  BN.prototype.div = function div (num) {
-    return this.divmod(num, 'div', false).div;
-  };
+function sigma0 (x) {
+  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
+}
 
-  // Find `this` % `num`
-  BN.prototype.mod = function mod (num) {
-    return this.divmod(num, 'mod', false).mod;
-  };
+function sigma1 (x) {
+  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
+}
 
-  BN.prototype.umod = function umod (num) {
-    return this.divmod(num, 'mod', true).mod;
-  };
+function gamma0 (x) {
+  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
+}
 
-  // Find Round(`this` / `num`)
-  BN.prototype.divRound = function divRound (num) {
-    var dm = this.divmod(num);
+function gamma1 (x) {
+  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
+}
 
-    // Fast case - exact division
-    if (dm.mod.isZero()) return dm.div;
+Sha256.prototype._update = function (M) {
+  var W = this._w
 
-    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
+  var f = this._f | 0
+  var g = this._g | 0
+  var h = this._h | 0
 
-    var half = num.ushrn(1);
-    var r2 = num.andln(1);
-    var cmp = mod.cmp(half);
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
 
-    // Round down
-    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;
+  for (var j = 0; j < 64; ++j) {
+    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
+    var T2 = (sigma0(a) + maj(a, b, c)) | 0
 
-    // Round up
-    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
-  };
+    h = g
+    g = f
+    f = e
+    e = (d + T1) | 0
+    d = c
+    c = b
+    b = a
+    a = (T1 + T2) | 0
+  }
 
-  BN.prototype.modn = function modn (num) {
-    assert(num <= 0x3ffffff);
-    var p = (1 << 26) % num;
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+  this._f = (f + this._f) | 0
+  this._g = (g + this._g) | 0
+  this._h = (h + this._h) | 0
+}
 
-    var acc = 0;
-    for (var i = this.length - 1; i >= 0; i--) {
-      acc = (p * acc + (this.words[i] | 0)) % num;
-    }
+Sha256.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(32)
 
-    return acc;
-  };
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
+  H.writeInt32BE(this._h, 28)
 
-  // In-place division by number
-  BN.prototype.idivn = function idivn (num) {
-    assert(num <= 0x3ffffff);
+  return H
+}
 
-    var carry = 0;
-    for (var i = this.length - 1; i >= 0; i--) {
-      var w = (this.words[i] | 0) + carry * 0x4000000;
-      this.words[i] = (w / num) | 0;
-      carry = w % num;
-    }
+module.exports = Sha256
 
-    return this.strip();
-  };
+},{"./hash":102,"inherits":96,"safe-buffer":101}],108:[function(require,module,exports){
+var inherits = require('inherits')
+var SHA512 = require('./sha512')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-  BN.prototype.divn = function divn (num) {
-    return this.clone().idivn(num);
-  };
+var W = new Array(160)
 
-  BN.prototype.egcd = function egcd (p) {
-    assert(p.negative === 0);
-    assert(!p.isZero());
+function Sha384 () {
+  this.init()
+  this._w = W
 
-    var x = this;
-    var y = p.clone();
+  Hash.call(this, 128, 112)
+}
 
-    if (x.negative !== 0) {
-      x = x.umod(p);
-    } else {
-      x = x.clone();
-    }
+inherits(Sha384, SHA512)
 
-    // A * x + B * y = x
-    var A = new BN(1);
-    var B = new BN(0);
+Sha384.prototype.init = function () {
+  this._ah = 0xcbbb9d5d
+  this._bh = 0x629a292a
+  this._ch = 0x9159015a
+  this._dh = 0x152fecd8
+  this._eh = 0x67332667
+  this._fh = 0x8eb44a87
+  this._gh = 0xdb0c2e0d
+  this._hh = 0x47b5481d
 
-    // C * x + D * y = y
-    var C = new BN(0);
-    var D = new BN(1);
+  this._al = 0xc1059ed8
+  this._bl = 0x367cd507
+  this._cl = 0x3070dd17
+  this._dl = 0xf70e5939
+  this._el = 0xffc00b31
+  this._fl = 0x68581511
+  this._gl = 0x64f98fa7
+  this._hl = 0xbefa4fa4
 
-    var g = 0;
+  return this
+}
 
-    while (x.isEven() && y.isEven()) {
-      x.iushrn(1);
-      y.iushrn(1);
-      ++g;
-    }
+Sha384.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(48)
 
-    var yp = y.clone();
-    var xp = x.clone();
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
 
-    while (!x.isZero()) {
-      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
-      if (i > 0) {
-        x.iushrn(i);
-        while (i-- > 0) {
-          if (A.isOdd() || B.isOdd()) {
-            A.iadd(yp);
-            B.isub(xp);
-          }
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
 
-          A.iushrn(1);
-          B.iushrn(1);
-        }
-      }
+  return H
+}
 
-      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
-      if (j > 0) {
-        y.iushrn(j);
-        while (j-- > 0) {
-          if (C.isOdd() || D.isOdd()) {
-            C.iadd(yp);
-            D.isub(xp);
-          }
+module.exports = Sha384
 
-          C.iushrn(1);
-          D.iushrn(1);
-        }
-      }
+},{"./hash":102,"./sha512":109,"inherits":96,"safe-buffer":101}],109:[function(require,module,exports){
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-      if (x.cmp(y) >= 0) {
-        x.isub(y);
-        A.isub(C);
-        B.isub(D);
-      } else {
-        y.isub(x);
-        C.isub(A);
-        D.isub(B);
-      }
-    }
+var K = [
+  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
+  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
+  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
+  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
+  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
+  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
+  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
+  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
+  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
+  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
+  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
+  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
+  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
+  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
+  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
+  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
+  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
+  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
+  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
+  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
+  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
+  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
+  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
+  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
+  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
+  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
+  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
+  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
+  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
+  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
+  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
+  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
+  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
+  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
+  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
+  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
+  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
+  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
+  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
+  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
+]
 
-    return {
-      a: C,
-      b: D,
-      gcd: y.iushln(g)
-    };
-  };
+var W = new Array(160)
 
-  // This is reduced incarnation of the binary EEA
-  // above, designated to invert members of the
-  // _prime_ fields F(p) at a maximal speed
-  BN.prototype._invmp = function _invmp (p) {
-    assert(p.negative === 0);
-    assert(!p.isZero());
+function Sha512 () {
+  this.init()
+  this._w = W
 
-    var a = this;
-    var b = p.clone();
+  Hash.call(this, 128, 112)
+}
 
-    if (a.negative !== 0) {
-      a = a.umod(p);
-    } else {
-      a = a.clone();
-    }
+inherits(Sha512, Hash)
 
-    var x1 = new BN(1);
-    var x2 = new BN(0);
+Sha512.prototype.init = function () {
+  this._ah = 0x6a09e667
+  this._bh = 0xbb67ae85
+  this._ch = 0x3c6ef372
+  this._dh = 0xa54ff53a
+  this._eh = 0x510e527f
+  this._fh = 0x9b05688c
+  this._gh = 0x1f83d9ab
+  this._hh = 0x5be0cd19
 
-    var delta = b.clone();
+  this._al = 0xf3bcc908
+  this._bl = 0x84caa73b
+  this._cl = 0xfe94f82b
+  this._dl = 0x5f1d36f1
+  this._el = 0xade682d1
+  this._fl = 0x2b3e6c1f
+  this._gl = 0xfb41bd6b
+  this._hl = 0x137e2179
 
-    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
-      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
-      if (i > 0) {
-        a.iushrn(i);
-        while (i-- > 0) {
-          if (x1.isOdd()) {
-            x1.iadd(delta);
-          }
+  return this
+}
 
-          x1.iushrn(1);
-        }
-      }
+function Ch (x, y, z) {
+  return z ^ (x & (y ^ z))
+}
 
-      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
-      if (j > 0) {
-        b.iushrn(j);
-        while (j-- > 0) {
-          if (x2.isOdd()) {
-            x2.iadd(delta);
-          }
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
+}
 
-          x2.iushrn(1);
-        }
-      }
+function sigma0 (x, xl) {
+  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
+}
 
-      if (a.cmp(b) >= 0) {
-        a.isub(b);
-        x1.isub(x2);
-      } else {
-        b.isub(a);
-        x2.isub(x1);
-      }
-    }
+function sigma1 (x, xl) {
+  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
+}
 
-    var res;
-    if (a.cmpn(1) === 0) {
-      res = x1;
-    } else {
-      res = x2;
-    }
+function Gamma0 (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
+}
 
-    if (res.cmpn(0) < 0) {
-      res.iadd(p);
-    }
+function Gamma0l (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
+}
 
-    return res;
-  };
+function Gamma1 (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
+}
 
-  BN.prototype.gcd = function gcd (num) {
-    if (this.isZero()) return num.abs();
-    if (num.isZero()) return this.abs();
+function Gamma1l (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
+}
 
-    var a = this.clone();
-    var b = num.clone();
-    a.negative = 0;
-    b.negative = 0;
+function getCarry (a, b) {
+  return (a >>> 0) < (b >>> 0) ? 1 : 0
+}
 
-    // Remove common factor of two
-    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
-      a.iushrn(1);
-      b.iushrn(1);
-    }
+Sha512.prototype._update = function (M) {
+  var W = this._w
 
-    do {
-      while (a.isEven()) {
-        a.iushrn(1);
-      }
-      while (b.isEven()) {
-        b.iushrn(1);
-      }
+  var ah = this._ah | 0
+  var bh = this._bh | 0
+  var ch = this._ch | 0
+  var dh = this._dh | 0
+  var eh = this._eh | 0
+  var fh = this._fh | 0
+  var gh = this._gh | 0
+  var hh = this._hh | 0
 
-      var r = a.cmp(b);
-      if (r < 0) {
-        // Swap `a` and `b` to make `a` always bigger than `b`
-        var t = a;
-        a = b;
-        b = t;
-      } else if (r === 0 || b.cmpn(1) === 0) {
-        break;
-      }
+  var al = this._al | 0
+  var bl = this._bl | 0
+  var cl = this._cl | 0
+  var dl = this._dl | 0
+  var el = this._el | 0
+  var fl = this._fl | 0
+  var gl = this._gl | 0
+  var hl = this._hl | 0
 
-      a.isub(b);
-    } while (true);
+  for (var i = 0; i < 32; i += 2) {
+    W[i] = M.readInt32BE(i * 4)
+    W[i + 1] = M.readInt32BE(i * 4 + 4)
+  }
+  for (; i < 160; i += 2) {
+    var xh = W[i - 15 * 2]
+    var xl = W[i - 15 * 2 + 1]
+    var gamma0 = Gamma0(xh, xl)
+    var gamma0l = Gamma0l(xl, xh)
 
-    return b.iushln(shift);
-  };
+    xh = W[i - 2 * 2]
+    xl = W[i - 2 * 2 + 1]
+    var gamma1 = Gamma1(xh, xl)
+    var gamma1l = Gamma1l(xl, xh)
 
-  // Invert number in the field F(num)
-  BN.prototype.invm = function invm (num) {
-    return this.egcd(num).a.umod(num);
-  };
+    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
+    var Wi7h = W[i - 7 * 2]
+    var Wi7l = W[i - 7 * 2 + 1]
 
-  BN.prototype.isEven = function isEven () {
-    return (this.words[0] & 1) === 0;
-  };
+    var Wi16h = W[i - 16 * 2]
+    var Wi16l = W[i - 16 * 2 + 1]
 
-  BN.prototype.isOdd = function isOdd () {
-    return (this.words[0] & 1) === 1;
-  };
+    var Wil = (gamma0l + Wi7l) | 0
+    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
+    Wil = (Wil + gamma1l) | 0
+    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
+    Wil = (Wil + Wi16l) | 0
+    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
 
-  // And first word and num
-  BN.prototype.andln = function andln (num) {
-    return this.words[0] & num;
-  };
+    W[i] = Wih
+    W[i + 1] = Wil
+  }
 
-  // Increment at the bit position in-line
-  BN.prototype.bincn = function bincn (bit) {
-    assert(typeof bit === 'number');
-    var r = bit % 26;
-    var s = (bit - r) / 26;
-    var q = 1 << r;
+  for (var j = 0; j < 160; j += 2) {
+    Wih = W[j]
+    Wil = W[j + 1]
 
-    // Fast case: bit is much higher than all existing words
-    if (this.length <= s) {
-      this._expand(s + 1);
-      this.words[s] |= q;
-      return this;
-    }
+    var majh = maj(ah, bh, ch)
+    var majl = maj(al, bl, cl)
 
-    // Add bit and propagate, if needed
-    var carry = q;
-    for (var i = s; carry !== 0 && i < this.length; i++) {
-      var w = this.words[i] | 0;
-      w += carry;
-      carry = w >>> 26;
-      w &= 0x3ffffff;
-      this.words[i] = w;
-    }
-    if (carry !== 0) {
-      this.words[i] = carry;
-      this.length++;
-    }
-    return this;
-  };
+    var sigma0h = sigma0(ah, al)
+    var sigma0l = sigma0(al, ah)
+    var sigma1h = sigma1(eh, el)
+    var sigma1l = sigma1(el, eh)
 
-  BN.prototype.isZero = function isZero () {
-    return this.length === 1 && this.words[0] === 0;
-  };
+    // t1 = h + sigma1 + ch + K[j] + W[j]
+    var Kih = K[j]
+    var Kil = K[j + 1]
 
-  BN.prototype.cmpn = function cmpn (num) {
-    var negative = num < 0;
+    var chh = Ch(eh, fh, gh)
+    var chl = Ch(el, fl, gl)
 
-    if (this.negative !== 0 && !negative) return -1;
-    if (this.negative === 0 && negative) return 1;
+    var t1l = (hl + sigma1l) | 0
+    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
+    t1l = (t1l + chl) | 0
+    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
+    t1l = (t1l + Kil) | 0
+    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
+    t1l = (t1l + Wil) | 0
+    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
 
-    this.strip();
+    // t2 = sigma0 + maj
+    var t2l = (sigma0l + majl) | 0
+    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
 
-    var res;
-    if (this.length > 1) {
-      res = 1;
-    } else {
-      if (negative) {
-        num = -num;
-      }
+    hh = gh
+    hl = gl
+    gh = fh
+    gl = fl
+    fh = eh
+    fl = el
+    el = (dl + t1l) | 0
+    eh = (dh + t1h + getCarry(el, dl)) | 0
+    dh = ch
+    dl = cl
+    ch = bh
+    cl = bl
+    bh = ah
+    bl = al
+    al = (t1l + t2l) | 0
+    ah = (t1h + t2h + getCarry(al, t1l)) | 0
+  }
 
-      assert(num <= 0x3ffffff, 'Number is too big');
+  this._al = (this._al + al) | 0
+  this._bl = (this._bl + bl) | 0
+  this._cl = (this._cl + cl) | 0
+  this._dl = (this._dl + dl) | 0
+  this._el = (this._el + el) | 0
+  this._fl = (this._fl + fl) | 0
+  this._gl = (this._gl + gl) | 0
+  this._hl = (this._hl + hl) | 0
 
-      var w = this.words[0] | 0;
-      res = w === num ? 0 : w < num ? -1 : 1;
-    }
-    if (this.negative !== 0) return -res | 0;
-    return res;
-  };
+  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
+  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
+  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
+  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
+  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
+  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
+  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
+  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
+}
 
-  // Compare two numbers and return:
-  // 1 - if `this` > `num`
-  // 0 - if `this` == `num`
-  // -1 - if `this` < `num`
-  BN.prototype.cmp = function cmp (num) {
-    if (this.negative !== 0 && num.negative === 0) return -1;
-    if (this.negative === 0 && num.negative !== 0) return 1;
+Sha512.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(64)
 
-    var res = this.ucmp(num);
-    if (this.negative !== 0) return -res | 0;
-    return res;
-  };
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
 
-  // Unsigned comparison
-  BN.prototype.ucmp = function ucmp (num) {
-    // At this point both numbers have the same sign
-    if (this.length > num.length) return 1;
-    if (this.length < num.length) return -1;
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
+  writeInt64BE(this._gh, this._gl, 48)
+  writeInt64BE(this._hh, this._hl, 56)
 
-    var res = 0;
-    for (var i = this.length - 1; i >= 0; i--) {
-      var a = this.words[i] | 0;
-      var b = num.words[i] | 0;
+  return H
+}
 
-      if (a === b) continue;
-      if (a < b) {
-        res = -1;
-      } else if (a > b) {
-        res = 1;
-      }
-      break;
-    }
-    return res;
-  };
+module.exports = Sha512
 
-  BN.prototype.gtn = function gtn (num) {
-    return this.cmpn(num) === 1;
-  };
+},{"./hash":102,"inherits":96,"safe-buffer":101}],110:[function(require,module,exports){
+var native = require('./native')
 
-  BN.prototype.gt = function gt (num) {
-    return this.cmp(num) === 1;
-  };
+function getTypeName (fn) {
+  return fn.name || fn.toString().match(/function (.*?)\s*\(/)[1]
+}
 
-  BN.prototype.gten = function gten (num) {
-    return this.cmpn(num) >= 0;
-  };
+function getValueTypeName (value) {
+  return native.Nil(value) ? '' : getTypeName(value.constructor)
+}
 
-  BN.prototype.gte = function gte (num) {
-    return this.cmp(num) >= 0;
-  };
+function getValue (value) {
+  if (native.Function(value)) return ''
+  if (native.String(value)) return JSON.stringify(value)
+  if (value && native.Object(value)) return ''
+  return value
+}
 
-  BN.prototype.ltn = function ltn (num) {
-    return this.cmpn(num) === -1;
-  };
+function tfJSON (type) {
+  if (native.Function(type)) return type.toJSON ? type.toJSON() : getTypeName(type)
+  if (native.Array(type)) return 'Array'
+  if (type && native.Object(type)) return 'Object'
 
-  BN.prototype.lt = function lt (num) {
-    return this.cmp(num) === -1;
-  };
+  return type !== undefined ? type : ''
+}
 
-  BN.prototype.lten = function lten (num) {
-    return this.cmpn(num) <= 0;
-  };
+function tfErrorString (type, value, valueTypeName) {
+  var valueJson = getValue(value)
 
-  BN.prototype.lte = function lte (num) {
-    return this.cmp(num) <= 0;
-  };
+  return 'Expected ' + tfJSON(type) + ', got' +
+    (valueTypeName !== '' ? ' ' + valueTypeName : '') +
+    (valueJson !== '' ? ' ' + valueJson : '')
+}
 
-  BN.prototype.eqn = function eqn (num) {
-    return this.cmpn(num) === 0;
-  };
+function TfTypeError (type, value, valueTypeName) {
+  valueTypeName = valueTypeName || getValueTypeName(value)
+  this.message = tfErrorString(type, value, valueTypeName)
 
-  BN.prototype.eq = function eq (num) {
-    return this.cmp(num) === 0;
-  };
+  Error.captureStackTrace(this, TfTypeError)
+  this.__type = type
+  this.__value = value
+  this.__valueTypeName = valueTypeName
+}
 
-  //
-  // A reduce context, could be using montgomery or something better, depending
-  // on the `m` itself.
-  //
-  BN.red = function red (num) {
-    return new Red(num);
-  };
+TfTypeError.prototype = Object.create(Error.prototype)
+TfTypeError.prototype.constructor = TfTypeError
 
-  BN.prototype.toRed = function toRed (ctx) {
-    assert(!this.red, 'Already a number in reduction context');
-    assert(this.negative === 0, 'red works only with positives');
-    return ctx.convertTo(this)._forceRed(ctx);
-  };
+function tfPropertyErrorString (type, label, name, value, valueTypeName) {
+  var description = '" of type '
+  if (label === 'key') description = '" with key type '
 
-  BN.prototype.fromRed = function fromRed () {
-    assert(this.red, 'fromRed works only with numbers in reduction context');
-    return this.red.convertFrom(this);
-  };
+  return tfErrorString('property "' + tfJSON(name) + description + tfJSON(type), value, valueTypeName)
+}
 
-  BN.prototype._forceRed = function _forceRed (ctx) {
-    this.red = ctx;
-    return this;
-  };
+function TfPropertyTypeError (type, property, label, value, valueTypeName) {
+  if (type) {
+    valueTypeName = valueTypeName || getValueTypeName(value)
+    this.message = tfPropertyErrorString(type, label, property, value, valueTypeName)
+  } else {
+    this.message = 'Unexpected property "' + property + '"'
+  }
 
-  BN.prototype.forceRed = function forceRed (ctx) {
-    assert(!this.red, 'Already a number in reduction context');
-    return this._forceRed(ctx);
-  };
+  Error.captureStackTrace(this, TfTypeError)
+  this.__label = label
+  this.__property = property
+  this.__type = type
+  this.__value = value
+  this.__valueTypeName = valueTypeName
+}
 
-  BN.prototype.redAdd = function redAdd (num) {
-    assert(this.red, 'redAdd works only with red numbers');
-    return this.red.add(this, num);
-  };
+TfPropertyTypeError.prototype = Object.create(Error.prototype)
+TfPropertyTypeError.prototype.constructor = TfTypeError
 
-  BN.prototype.redIAdd = function redIAdd (num) {
-    assert(this.red, 'redIAdd works only with red numbers');
-    return this.red.iadd(this, num);
-  };
+function tfCustomError (expected, actual) {
+  return new TfTypeError(expected, {}, actual)
+}
 
-  BN.prototype.redSub = function redSub (num) {
-    assert(this.red, 'redSub works only with red numbers');
-    return this.red.sub(this, num);
-  };
+function tfSubError (e, property, label) {
+  // sub child?
+  if (e instanceof TfPropertyTypeError) {
+    property = property + '.' + e.__property
 
-  BN.prototype.redISub = function redISub (num) {
-    assert(this.red, 'redISub works only with red numbers');
-    return this.red.isub(this, num);
-  };
+    e = new TfPropertyTypeError(
+      e.__type, property, e.__label, e.__value, e.__valueTypeName
+    )
 
-  BN.prototype.redShl = function redShl (num) {
-    assert(this.red, 'redShl works only with red numbers');
-    return this.red.shl(this, num);
-  };
+  // child?
+  } else if (e instanceof TfTypeError) {
+    e = new TfPropertyTypeError(
+      e.__type, property, label, e.__value, e.__valueTypeName
+    )
+  }
 
-  BN.prototype.redMul = function redMul (num) {
-    assert(this.red, 'redMul works only with red numbers');
-    this.red._verify2(this, num);
-    return this.red.mul(this, num);
-  };
+  Error.captureStackTrace(e)
+  return e
+}
 
-  BN.prototype.redIMul = function redIMul (num) {
-    assert(this.red, 'redMul works only with red numbers');
-    this.red._verify2(this, num);
-    return this.red.imul(this, num);
-  };
+module.exports = {
+  TfTypeError: TfTypeError,
+  TfPropertyTypeError: TfPropertyTypeError,
+  tfCustomError: tfCustomError,
+  tfSubError: tfSubError,
+  tfJSON: tfJSON,
+  getValueTypeName: getValueTypeName
+}
 
-  BN.prototype.redSqr = function redSqr () {
-    assert(this.red, 'redSqr works only with red numbers');
-    this.red._verify1(this);
-    return this.red.sqr(this);
-  };
+},{"./native":113}],111:[function(require,module,exports){
+(function (Buffer){
+var NATIVE = require('./native')
+var ERRORS = require('./errors')
 
-  BN.prototype.redISqr = function redISqr () {
-    assert(this.red, 'redISqr works only with red numbers');
-    this.red._verify1(this);
-    return this.red.isqr(this);
-  };
+function _Buffer (value) {
+  return Buffer.isBuffer(value)
+}
 
-  // Square root over p
-  BN.prototype.redSqrt = function redSqrt () {
-    assert(this.red, 'redSqrt works only with red numbers');
-    this.red._verify1(this);
-    return this.red.sqrt(this);
-  };
+function Hex (value) {
+  return typeof value === 'string' && /^([0-9a-f]{2})+$/i.test(value)
+}
 
-  BN.prototype.redInvm = function redInvm () {
-    assert(this.red, 'redInvm works only with red numbers');
-    this.red._verify1(this);
-    return this.red.invm(this);
-  };
+function _LengthN (type, length) {
+  var name = type.toJSON()
 
-  // Return negative clone of `this` % `red modulo`
-  BN.prototype.redNeg = function redNeg () {
-    assert(this.red, 'redNeg works only with red numbers');
-    this.red._verify1(this);
-    return this.red.neg(this);
-  };
+  function Length (value) {
+    if (!type(value)) return false
+    if (value.length === length) return true
 
-  BN.prototype.redPow = function redPow (num) {
-    assert(this.red && !num.red, 'redPow(normalNum)');
-    this.red._verify1(this);
-    return this.red.pow(this, num);
-  };
+    throw ERRORS.tfCustomError(name + '(Length: ' + length + ')', name + '(Length: ' + value.length + ')')
+  }
+  Length.toJSON = function () { return name }
 
-  // Prime numbers with efficient reduction
-  var primes = {
-    k256: null,
-    p224: null,
-    p192: null,
-    p25519: null
-  };
+  return Length
+}
 
-  // Pseudo-Mersenne prime
-  function MPrime (name, p) {
-    // P = 2 ^ N - K
-    this.name = name;
-    this.p = new BN(p, 16);
-    this.n = this.p.bitLength();
-    this.k = new BN(1).iushln(this.n).isub(this.p);
+var _ArrayN = _LengthN.bind(null, NATIVE.Array)
+var _BufferN = _LengthN.bind(null, _Buffer)
+var _HexN = _LengthN.bind(null, Hex)
+var _StringN = _LengthN.bind(null, NATIVE.String)
 
-    this.tmp = this._tmp();
-  }
+var UINT53_MAX = Math.pow(2, 53) - 1
 
-  MPrime.prototype._tmp = function _tmp () {
-    var tmp = new BN(null);
-    tmp.words = new Array(Math.ceil(this.n / 13));
-    return tmp;
-  };
-
-  MPrime.prototype.ireduce = function ireduce (num) {
-    // Assumes that `num` is less than `P^2`
-    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
-    var r = num;
-    var rlen;
-
-    do {
-      this.split(r, this.tmp);
-      r = this.imulK(r);
-      r = r.iadd(this.tmp);
-      rlen = r.bitLength();
-    } while (rlen > this.n);
+function Finite (value) {
+  return typeof value === 'number' && isFinite(value)
+}
+function Int8 (value) { return ((value << 24) >> 24) === value }
+function Int16 (value) { return ((value << 16) >> 16) === value }
+function Int32 (value) { return (value | 0) === value }
+function UInt8 (value) { return (value & 0xff) === value }
+function UInt16 (value) { return (value & 0xffff) === value }
+function UInt32 (value) { return (value >>> 0) === value }
+function UInt53 (value) {
+  return typeof value === 'number' &&
+    value >= 0 &&
+    value <= UINT53_MAX &&
+    Math.floor(value) === value
+}
 
-    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
-    if (cmp === 0) {
-      r.words[0] = 0;
-      r.length = 1;
-    } else if (cmp > 0) {
-      r.isub(this.p);
-    } else {
-      r.strip();
-    }
+var types = {
+  ArrayN: _ArrayN,
+  Buffer: _Buffer,
+  BufferN: _BufferN,
+  Finite: Finite,
+  Hex: Hex,
+  HexN: _HexN,
+  Int8: Int8,
+  Int16: Int16,
+  Int32: Int32,
+  StringN: _StringN,
+  UInt8: UInt8,
+  UInt16: UInt16,
+  UInt32: UInt32,
+  UInt53: UInt53
+}
 
-    return r;
-  };
+for (var typeName in types) {
+  types[typeName].toJSON = function (t) {
+    return t
+  }.bind(null, typeName)
+}
 
-  MPrime.prototype.split = function split (input, out) {
-    input.iushrn(this.n, 0, out);
-  };
+module.exports = types
 
-  MPrime.prototype.imulK = function imulK (num) {
-    return num.imul(this.k);
-  };
+}).call(this,{"isBuffer":require("../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
+},{"../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"./errors":110,"./native":113}],112:[function(require,module,exports){
+var ERRORS = require('./errors')
+var NATIVE = require('./native')
 
-  function K256 () {
-    MPrime.call(
-      this,
-      'k256',
-      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
-  }
-  inherits(K256, MPrime);
+// short-hand
+var tfJSON = ERRORS.tfJSON
+var TfTypeError = ERRORS.TfTypeError
+var TfPropertyTypeError = ERRORS.TfPropertyTypeError
+var tfSubError = ERRORS.tfSubError
+var getValueTypeName = ERRORS.getValueTypeName
 
-  K256.prototype.split = function split (input, output) {
-    // 256 = 9 * 26 + 22
-    var mask = 0x3fffff;
+var TYPES = {
+  arrayOf: function arrayOf (type) {
+    type = compile(type)
 
-    var outLen = Math.min(input.length, 9);
-    for (var i = 0; i < outLen; i++) {
-      output.words[i] = input.words[i];
-    }
-    output.length = outLen;
+    function _arrayOf (array, strict) {
+      if (!NATIVE.Array(array)) return false
+      if (NATIVE.Nil(array)) return false
 
-    if (input.length <= 9) {
-      input.words[0] = 0;
-      input.length = 1;
-      return;
+      return array.every(function (value, i) {
+        try {
+          return typeforce(type, value, strict)
+        } catch (e) {
+          throw tfSubError(e, i)
+        }
+      })
     }
+    _arrayOf.toJSON = function () { return '[' + tfJSON(type) + ']' }
 
-    // Shift by 9 limbs
-    var prev = input.words[9];
-    output.words[output.length++] = prev & mask;
-
-    for (i = 10; i < input.length; i++) {
-      var next = input.words[i] | 0;
-      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
-      prev = next;
-    }
-    prev >>>= 22;
-    input.words[i - 10] = prev;
-    if (prev === 0 && input.length > 10) {
-      input.length -= 10;
-    } else {
-      input.length -= 9;
-    }
-  };
+    return _arrayOf
+  },
 
-  K256.prototype.imulK = function imulK (num) {
-    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
-    num.words[num.length] = 0;
-    num.words[num.length + 1] = 0;
-    num.length += 2;
+  maybe: function maybe (type) {
+    type = compile(type)
 
-    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
-    var lo = 0;
-    for (var i = 0; i < num.length; i++) {
-      var w = num.words[i] | 0;
-      lo += w * 0x3d1;
-      num.words[i] = lo & 0x3ffffff;
-      lo = w * 0x40 + ((lo / 0x4000000) | 0);
+    function _maybe (value, strict) {
+      return NATIVE.Nil(value) || type(value, strict, maybe)
     }
+    _maybe.toJSON = function () { return '?' + tfJSON(type) }
 
-    // Fast length reduction
-    if (num.words[num.length - 1] === 0) {
-      num.length--;
-      if (num.words[num.length - 1] === 0) {
-        num.length--;
-      }
-    }
-    return num;
-  };
+    return _maybe
+  },
 
-  function P224 () {
-    MPrime.call(
-      this,
-      'p224',
-      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
-  }
-  inherits(P224, MPrime);
+  map: function map (propertyType, propertyKeyType) {
+    propertyType = compile(propertyType)
+    if (propertyKeyType) propertyKeyType = compile(propertyKeyType)
 
-  function P192 () {
-    MPrime.call(
-      this,
-      'p192',
-      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
-  }
-  inherits(P192, MPrime);
+    function _map (value, strict) {
+      if (!NATIVE.Object(value)) return false
+      if (NATIVE.Nil(value)) return false
 
-  function P25519 () {
-    // 2 ^ 255 - 19
-    MPrime.call(
-      this,
-      '25519',
-      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
-  }
-  inherits(P25519, MPrime);
+      for (var propertyName in value) {
+        try {
+          if (propertyKeyType) {
+            typeforce(propertyKeyType, propertyName, strict)
+          }
+        } catch (e) {
+          throw tfSubError(e, propertyName, 'key')
+        }
 
-  P25519.prototype.imulK = function imulK (num) {
-    // K = 0x13
-    var carry = 0;
-    for (var i = 0; i < num.length; i++) {
-      var hi = (num.words[i] | 0) * 0x13 + carry;
-      var lo = hi & 0x3ffffff;
-      hi >>>= 26;
+        try {
+          var propertyValue = value[propertyName]
+          typeforce(propertyType, propertyValue, strict)
+        } catch (e) {
+          throw tfSubError(e, propertyName)
+        }
+      }
 
-      num.words[i] = lo;
-      carry = hi;
-    }
-    if (carry !== 0) {
-      num.words[num.length++] = carry;
+      return true
     }
-    return num;
-  };
-
-  // Exported mostly for testing purposes, use plain name instead
-  BN._prime = function prime (name) {
-    // Cached version of prime
-    if (primes[name]) return primes[name];
 
-    var prime;
-    if (name === 'k256') {
-      prime = new K256();
-    } else if (name === 'p224') {
-      prime = new P224();
-    } else if (name === 'p192') {
-      prime = new P192();
-    } else if (name === 'p25519') {
-      prime = new P25519();
+    if (propertyKeyType) {
+      _map.toJSON = function () {
+        return '{' + tfJSON(propertyKeyType) + ': ' + tfJSON(propertyType) + '}'
+      }
     } else {
-      throw new Error('Unknown prime ' + name);
+      _map.toJSON = function () { return '{' + tfJSON(propertyType) + '}' }
     }
-    primes[name] = prime;
 
-    return prime;
-  };
+    return _map
+  },
 
-  //
-  // Base reduction engine
-  //
-  function Red (m) {
-    if (typeof m === 'string') {
-      var prime = BN._prime(m);
-      this.m = prime.p;
-      this.prime = prime;
-    } else {
-      assert(m.gtn(1), 'modulus must be greater than 1');
-      this.m = m;
-      this.prime = null;
+  object: function object (uncompiled) {
+    var type = {}
+
+    for (var typePropertyName in uncompiled) {
+      type[typePropertyName] = compile(uncompiled[typePropertyName])
     }
-  }
 
-  Red.prototype._verify1 = function _verify1 (a) {
-    assert(a.negative === 0, 'red works only with positives');
-    assert(a.red, 'red works only with red numbers');
-  };
+    function _object (value, strict) {
+      if (!NATIVE.Object(value)) return false
+      if (NATIVE.Nil(value)) return false
 
-  Red.prototype._verify2 = function _verify2 (a, b) {
-    assert((a.negative | b.negative) === 0, 'red works only with positives');
-    assert(a.red && a.red === b.red,
-      'red works only with red numbers');
-  };
+      var propertyName
 
-  Red.prototype.imod = function imod (a) {
-    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
-    return a.umod(this.m)._forceRed(this);
-  };
+      try {
+        for (propertyName in type) {
+          var propertyType = type[propertyName]
+          var propertyValue = value[propertyName]
 
-  Red.prototype.neg = function neg (a) {
-    if (a.isZero()) {
-      return a.clone();
-    }
+          typeforce(propertyType, propertyValue, strict)
+        }
+      } catch (e) {
+        throw tfSubError(e, propertyName)
+      }
 
-    return this.m.sub(a)._forceRed(this);
-  };
+      if (strict) {
+        for (propertyName in value) {
+          if (type[propertyName]) continue
 
-  Red.prototype.add = function add (a, b) {
-    this._verify2(a, b);
+          throw new TfPropertyTypeError(undefined, propertyName)
+        }
+      }
 
-    var res = a.add(b);
-    if (res.cmp(this.m) >= 0) {
-      res.isub(this.m);
+      return true
     }
-    return res._forceRed(this);
-  };
+    _object.toJSON = function () { return tfJSON(type) }
 
-  Red.prototype.iadd = function iadd (a, b) {
-    this._verify2(a, b);
+    return _object
+  },
 
-    var res = a.iadd(b);
-    if (res.cmp(this.m) >= 0) {
-      res.isub(this.m);
+  oneOf: function oneOf () {
+    var types = [].slice.call(arguments).map(compile)
+
+    function _oneOf (value, strict) {
+      return types.some(function (type) {
+        try {
+          return typeforce(type, value, strict)
+        } catch (e) {
+          return false
+        }
+      })
     }
-    return res;
-  };
+    _oneOf.toJSON = function () { return types.map(tfJSON).join('|') }
 
-  Red.prototype.sub = function sub (a, b) {
-    this._verify2(a, b);
+    return _oneOf
+  },
 
-    var res = a.sub(b);
-    if (res.cmpn(0) < 0) {
-      res.iadd(this.m);
+  quacksLike: function quacksLike (type) {
+    function _quacksLike (value) {
+      return type === getValueTypeName(value)
     }
-    return res._forceRed(this);
-  };
+    _quacksLike.toJSON = function () { return type }
 
-  Red.prototype.isub = function isub (a, b) {
-    this._verify2(a, b);
+    return _quacksLike
+  },
 
-    var res = a.isub(b);
-    if (res.cmpn(0) < 0) {
-      res.iadd(this.m);
+  tuple: function tuple () {
+    var types = [].slice.call(arguments).map(compile)
+
+    function _tuple (values, strict) {
+      if (NATIVE.Nil(values)) return false
+      if (NATIVE.Nil(values.length)) return false
+      if (strict && (values.length !== types.length)) return false
+
+      return types.every(function (type, i) {
+        try {
+          return typeforce(type, values[i], strict)
+        } catch (e) {
+          throw tfSubError(e, i)
+        }
+      })
     }
-    return res;
-  };
+    _tuple.toJSON = function () { return '(' + types.map(tfJSON).join(', ') + ')' }
 
-  Red.prototype.shl = function shl (a, num) {
-    this._verify1(a);
-    return this.imod(a.ushln(num));
-  };
+    return _tuple
+  },
 
-  Red.prototype.imul = function imul (a, b) {
-    this._verify2(a, b);
-    return this.imod(a.imul(b));
-  };
+  value: function value (expected) {
+    function _value (actual) {
+      return actual === expected
+    }
+    _value.toJSON = function () { return expected }
 
-  Red.prototype.mul = function mul (a, b) {
-    this._verify2(a, b);
-    return this.imod(a.mul(b));
-  };
+    return _value
+  }
+}
 
-  Red.prototype.isqr = function isqr (a) {
-    return this.imul(a, a.clone());
-  };
+function compile (type) {
+  if (NATIVE.String(type)) {
+    if (type[0] === '?') return TYPES.maybe(type.slice(1))
 
-  Red.prototype.sqr = function sqr (a) {
-    return this.mul(a, a);
-  };
+    return NATIVE[type] || TYPES.quacksLike(type)
+  } else if (type && NATIVE.Object(type)) {
+    if (NATIVE.Array(type)) return TYPES.arrayOf(type[0])
 
-  Red.prototype.sqrt = function sqrt (a) {
-    if (a.isZero()) return a.clone();
+    return TYPES.object(type)
+  } else if (NATIVE.Function(type)) {
+    return type
+  }
 
-    var mod3 = this.m.andln(3);
-    assert(mod3 % 2 === 1);
+  return TYPES.value(type)
+}
 
-    // Fast case
-    if (mod3 === 3) {
-      var pow = this.m.add(new BN(1)).iushrn(2);
-      return this.pow(a, pow);
-    }
+function typeforce (type, value, strict, surrogate) {
+  if (NATIVE.Function(type)) {
+    if (type(value, strict)) return true
 
-    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
-    //
-    // Find Q and S, that Q * 2 ^ S = (P - 1)
-    var q = this.m.subn(1);
-    var s = 0;
-    while (!q.isZero() && q.andln(1) === 0) {
-      s++;
-      q.iushrn(1);
-    }
-    assert(!q.isZero());
+    throw new TfTypeError(surrogate || type, value)
+  }
 
-    var one = new BN(1).toRed(this);
-    var nOne = one.redNeg();
+  // JIT
+  return typeforce(compile(type), value, strict)
+}
 
-    // Find quadratic non-residue
-    // NOTE: Max is such because of generalized Riemann hypothesis.
-    var lpow = this.m.subn(1).iushrn(1);
-    var z = this.m.bitLength();
-    z = new BN(2 * z * z).toRed(this);
+// assign types to typeforce function
+for (var typeName in NATIVE) {
+  typeforce[typeName] = NATIVE[typeName]
+}
 
-    while (this.pow(z, lpow).cmp(nOne) !== 0) {
-      z.redIAdd(nOne);
-    }
+for (typeName in TYPES) {
+  typeforce[typeName] = TYPES[typeName]
+}
 
-    var c = this.pow(z, q);
-    var r = this.pow(a, q.addn(1).iushrn(1));
-    var t = this.pow(a, q);
-    var m = s;
-    while (t.cmp(one) !== 0) {
-      var tmp = t;
-      for (var i = 0; tmp.cmp(one) !== 0; i++) {
-        tmp = tmp.redSqr();
-      }
-      assert(i < m);
-      var b = this.pow(c, new BN(1).iushln(m - i - 1));
+var EXTRA = require('./extra')
+for (typeName in EXTRA) {
+  typeforce[typeName] = EXTRA[typeName]
+}
 
-      r = r.redMul(b);
-      c = b.redSqr();
-      t = t.redMul(c);
-      m = i;
-    }
+// async wrapper
+function __async (type, value, strict, callback) {
+  // default to falsy strict if using shorthand overload
+  if (typeof strict === 'function') return __async(type, value, false, strict)
 
-    return r;
-  };
+  try {
+    typeforce(type, value, strict)
+  } catch (e) {
+    return callback(e)
+  }
 
-  Red.prototype.invm = function invm (a) {
-    var inv = a._invmp(this.m);
-    if (inv.negative !== 0) {
-      inv.negative = 0;
-      return this.imod(inv).redNeg();
-    } else {
-      return this.imod(inv);
-    }
-  };
+  callback()
+}
 
-  Red.prototype.pow = function pow (a, num) {
-    if (num.isZero()) return new BN(1);
-    if (num.cmpn(1) === 0) return a.clone();
+typeforce.async = __async
+typeforce.compile = compile
+typeforce.TfTypeError = TfTypeError
+typeforce.TfPropertyTypeError = TfPropertyTypeError
 
-    var windowSize = 4;
-    var wnd = new Array(1 << windowSize);
-    wnd[0] = new BN(1).toRed(this);
-    wnd[1] = a;
-    for (var i = 2; i < wnd.length; i++) {
-      wnd[i] = this.mul(wnd[i - 1], a);
-    }
+module.exports = typeforce
 
-    var res = wnd[0];
-    var current = 0;
-    var currentLen = 0;
-    var start = num.bitLength() % 26;
-    if (start === 0) {
-      start = 26;
-    }
-
-    for (i = num.length - 1; i >= 0; i--) {
-      var word = num.words[i];
-      for (var j = start - 1; j >= 0; j--) {
-        var bit = (word >> j) & 1;
-        if (res !== wnd[0]) {
-          res = this.sqr(res);
-        }
-
-        if (bit === 0 && current === 0) {
-          currentLen = 0;
-          continue;
-        }
+},{"./errors":110,"./extra":111,"./native":113}],113:[function(require,module,exports){
+var types = {
+  Array: function (value) { return value !== null && value !== undefined && value.constructor === Array },
+  Boolean: function (value) { return typeof value === 'boolean' },
+  Function: function (value) { return typeof value === 'function' },
+  Nil: function (value) { return value === undefined || value === null },
+  Number: function (value) { return typeof value === 'number' },
+  Object: function (value) { return typeof value === 'object' },
+  String: function (value) { return typeof value === 'string' },
+  '': function () { return true }
+}
 
-        current <<= 1;
-        current |= bit;
-        currentLen++;
-        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;
+// TODO: deprecate
+types.Null = types.Nil
 
-        res = this.mul(res, wnd[current]);
-        currentLen = 0;
-        current = 0;
-      }
-      start = 26;
-    }
+for (var typeName in types) {
+  types[typeName].toJSON = function (t) {
+    return t
+  }.bind(null, typeName)
+}
 
-    return res;
-  };
+module.exports = types
 
-  Red.prototype.convertTo = function convertTo (num) {
-    var r = num.umod(this.m);
+},{}],114:[function(require,module,exports){
+'use strict'
+var Buffer = require('safe-buffer').Buffer
 
-    return r === num ? r.clone() : r;
-  };
+// Number.MAX_SAFE_INTEGER
+var MAX_SAFE_INTEGER = 9007199254740991
 
-  Red.prototype.convertFrom = function convertFrom (num) {
-    var res = num.clone();
-    res.red = null;
-    return res;
-  };
+function checkUInt53 (n) {
+  if (n < 0 || n > MAX_SAFE_INTEGER || n % 1 !== 0) throw new RangeError('value out of range')
+}
 
-  //
-  // Montgomery method engine
-  //
+function encode (number, buffer, offset) {
+  checkUInt53(number)
 
-  BN.mont = function mont (num) {
-    return new Mont(num);
-  };
+  if (!buffer) buffer = Buffer.allocUnsafe(encodingLength(number))
+  if (!Buffer.isBuffer(buffer)) throw new TypeError('buffer must be a Buffer instance')
+  if (!offset) offset = 0
 
-  function Mont (m) {
-    Red.call(this, m);
+  // 8 bit
+  if (number < 0xfd) {
+    buffer.writeUInt8(number, offset)
+    encode.bytes = 1
 
-    this.shift = this.m.bitLength();
-    if (this.shift % 26 !== 0) {
-      this.shift += 26 - (this.shift % 26);
-    }
+  // 16 bit
+  } else if (number <= 0xffff) {
+    buffer.writeUInt8(0xfd, offset)
+    buffer.writeUInt16LE(number, offset + 1)
+    encode.bytes = 3
 
-    this.r = new BN(1).iushln(this.shift);
-    this.r2 = this.imod(this.r.sqr());
-    this.rinv = this.r._invmp(this.m);
+  // 32 bit
+  } else if (number <= 0xffffffff) {
+    buffer.writeUInt8(0xfe, offset)
+    buffer.writeUInt32LE(number, offset + 1)
+    encode.bytes = 5
 
-    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
-    this.minv = this.minv.umod(this.r);
-    this.minv = this.r.sub(this.minv);
+  // 64 bit
+  } else {
+    buffer.writeUInt8(0xff, offset)
+    buffer.writeUInt32LE(number >>> 0, offset + 1)
+    buffer.writeUInt32LE((number / 0x100000000) | 0, offset + 5)
+    encode.bytes = 9
   }
-  inherits(Mont, Red);
-
-  Mont.prototype.convertTo = function convertTo (num) {
-    return this.imod(num.ushln(this.shift));
-  };
-
-  Mont.prototype.convertFrom = function convertFrom (num) {
-    var r = this.imod(num.mul(this.rinv));
-    r.red = null;
-    return r;
-  };
-
-  Mont.prototype.imul = function imul (a, b) {
-    if (a.isZero() || b.isZero()) {
-      a.words[0] = 0;
-      a.length = 1;
-      return a;
-    }
-
-    var t = a.imul(b);
-    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
-    var u = t.isub(c).iushrn(this.shift);
-    var res = u;
-
-    if (u.cmp(this.m) >= 0) {
-      res = u.isub(this.m);
-    } else if (u.cmpn(0) < 0) {
-      res = u.iadd(this.m);
-    }
 
-    return res._forceRed(this);
-  };
-
-  Mont.prototype.mul = function mul (a, b) {
-    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);
+  return buffer
+}
 
-    var t = a.mul(b);
-    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
-    var u = t.isub(c).iushrn(this.shift);
-    var res = u;
-    if (u.cmp(this.m) >= 0) {
-      res = u.isub(this.m);
-    } else if (u.cmpn(0) < 0) {
-      res = u.iadd(this.m);
-    }
+function decode (buffer, offset) {
+  if (!Buffer.isBuffer(buffer)) throw new TypeError('buffer must be a Buffer instance')
+  if (!offset) offset = 0
 
-    return res._forceRed(this);
-  };
+  var first = buffer.readUInt8(offset)
 
-  Mont.prototype.invm = function invm (a) {
-    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
-    var res = this.imod(a._invmp(this.m).mul(this.r2));
-    return res._forceRed(this);
-  };
-})(typeof module === 'undefined' || module, this);
+  // 8 bit
+  if (first < 0xfd) {
+    decode.bytes = 1
+    return first
 
-},{}],82:[function(require,module,exports){
-var r;
+  // 16 bit
+  } else if (first === 0xfd) {
+    decode.bytes = 3
+    return buffer.readUInt16LE(offset + 1)
 
-module.exports = function rand(len) {
-  if (!r)
-    r = new Rand(null);
+  // 32 bit
+  } else if (first === 0xfe) {
+    decode.bytes = 5
+    return buffer.readUInt32LE(offset + 1)
 
-  return r.generate(len);
-};
+  // 64 bit
+  } else {
+    decode.bytes = 9
+    var lo = buffer.readUInt32LE(offset + 1)
+    var hi = buffer.readUInt32LE(offset + 5)
+    var number = hi * 0x0100000000 + lo
+    checkUInt53(number)
 
-function Rand(rand) {
-  this.rand = rand;
+    return number
+  }
 }
-module.exports.Rand = Rand;
-
-Rand.prototype.generate = function generate(len) {
-  return this._rand(len);
-};
-
-// Emulate crypto API using randy
-Rand.prototype._rand = function _rand(n) {
-  if (this.rand.getBytes)
-    return this.rand.getBytes(n);
-
-  var res = new Uint8Array(n);
-  for (var i = 0; i < res.length; i++)
-    res[i] = this.rand.getByte();
-  return res;
-};
-
-if (typeof self === 'object') {
-  if (self.crypto && self.crypto.getRandomValues) {
-    // Modern browsers
-    Rand.prototype._rand = function _rand(n) {
-      var arr = new Uint8Array(n);
-      self.crypto.getRandomValues(arr);
-      return arr;
-    };
-  } else if (self.msCrypto && self.msCrypto.getRandomValues) {
-    // IE
-    Rand.prototype._rand = function _rand(n) {
-      var arr = new Uint8Array(n);
-      self.msCrypto.getRandomValues(arr);
-      return arr;
-    };
 
-  // Safari's WebWorkers do not have `crypto`
-  } else if (typeof window === 'object') {
-    // Old junk
-    Rand.prototype._rand = function() {
-      throw new Error('Not implemented yet');
-    };
-  }
-} else {
-  // Node.js or Web worker with no crypto support
-  try {
-    var crypto = require('crypto');
-    if (typeof crypto.randomBytes !== 'function')
-      throw new Error('Not supported');
+function encodingLength (number) {
+  checkUInt53(number)
 
-    Rand.prototype._rand = function _rand(n) {
-      return crypto.randomBytes(n);
-    };
-  } catch (e) {
-  }
+  return (
+    number < 0xfd ? 1
+  : number <= 0xffff ? 3
+  : number <= 0xffffffff ? 5
+  : 9
+  )
 }
 
-},{"crypto":3}],83:[function(require,module,exports){
-var basex = require('base-x')
-var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
-
-module.exports = basex(ALPHABET)
+module.exports = { encode: encode, decode: decode, encodingLength: encodingLength }
 
-},{"base-x":35}],84:[function(require,module,exports){
+},{"safe-buffer":101}],115:[function(require,module,exports){
 (function (Buffer){
-'use strict'
-
-var base58 = require('bs58')
-
-module.exports = function (checksumFn) {
-  // Encode a buffer as a base58-check encoded string
-  function encode (payload) {
-    var checksum = checksumFn(payload)
-
-    return base58.encode(Buffer.concat([
-      payload,
-      checksum
-    ], payload.length + 4))
-  }
-
-  function decodeRaw (buffer) {
-    var payload = buffer.slice(0, -4)
-    var checksum = buffer.slice(-4)
-    var newChecksum = checksumFn(payload)
+var bs58check = require('bs58check')
 
-    if (checksum[0] ^ newChecksum[0] |
-        checksum[1] ^ newChecksum[1] |
-        checksum[2] ^ newChecksum[2] |
-        checksum[3] ^ newChecksum[3]) return
+function decodeRaw (buffer, version) {
+  // check version only if defined
+  if (version !== undefined && buffer[0] !== version) throw new Error('Invalid network version')
 
-    return payload
+  // uncompressed
+  if (buffer.length === 33) {
+    return {
+      version: buffer[0],
+      privateKey: buffer.slice(1, 33),
+      compressed: false
+    }
   }
 
-  // Decode a base58-check encoded string to a buffer, no result if checksum is wrong
-  function decodeUnsafe (string) {
-    var buffer = base58.decodeUnsafe(string)
-    if (!buffer) return
-
-    return decodeRaw(buffer)
-  }
+  // invalid length
+  if (buffer.length !== 34) throw new Error('Invalid WIF length')
 
-  function decode (string) {
-    var buffer = base58.decode(string)
-    var payload = decodeRaw(buffer, checksumFn)
-    if (!payload) throw new Error('Invalid checksum')
-    return payload
-  }
+  // invalid compression flag
+  if (buffer[33] !== 0x01) throw new Error('Invalid compression flag')
 
   return {
-    encode: encode,
-    decode: decode,
-    decodeUnsafe: decodeUnsafe
-  }
-}
-
-}).call(this,require("buffer").Buffer)
-},{"bs58":83,"buffer":5}],85:[function(require,module,exports){
-'use strict'
-
-var createHash = require('create-hash')
-var bs58checkBase = require('./base')
-
-// SHA256(SHA256(buffer))
-function sha256x2 (buffer) {
-  var tmp = createHash('sha256').update(buffer).digest()
-  return createHash('sha256').update(tmp).digest()
-}
-
-module.exports = bs58checkBase(sha256x2)
-
-},{"./base":84,"create-hash":87}],86:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var Transform = require('stream').Transform
-var StringDecoder = require('string_decoder').StringDecoder
-var inherits = require('inherits')
-
-function CipherBase (hashMode) {
-  Transform.call(this)
-  this.hashMode = typeof hashMode === 'string'
-  if (this.hashMode) {
-    this[hashMode] = this._finalOrDigest
-  } else {
-    this.final = this._finalOrDigest
-  }
-  if (this._final) {
-    this.__final = this._final
-    this._final = null
+    version: buffer[0],
+    privateKey: buffer.slice(1, 33),
+    compressed: true
   }
-  this._decoder = null
-  this._encoding = null
 }
-inherits(CipherBase, Transform)
 
-CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
-  if (typeof data === 'string') {
-    data = Buffer.from(data, inputEnc)
-  }
+function encodeRaw (version, privateKey, compressed) {
+  var result = new Buffer(compressed ? 34 : 33)
 
-  var outData = this._update(data)
-  if (this.hashMode) return this
+  result.writeUInt8(version, 0)
+  privateKey.copy(result, 1)
 
-  if (outputEnc) {
-    outData = this._toString(outData, outputEnc)
+  if (compressed) {
+    result[33] = 0x01
   }
 
-  return outData
-}
-
-CipherBase.prototype.setAutoPadding = function () {}
-CipherBase.prototype.getAuthTag = function () {
-  throw new Error('trying to get auth tag in unsupported state')
+  return result
 }
 
-CipherBase.prototype.setAuthTag = function () {
-  throw new Error('trying to set auth tag in unsupported state')
+function decode (string, version) {
+  return decodeRaw(bs58check.decode(string), version)
 }
 
-CipherBase.prototype.setAAD = function () {
-  throw new Error('trying to set aad in unsupported state')
-}
+function encode (version, privateKey, compressed) {
+  if (typeof version === 'number') return bs58check.encode(encodeRaw(version, privateKey, compressed))
 
-CipherBase.prototype._transform = function (data, _, next) {
-  var err
-  try {
-    if (this.hashMode) {
-      this._update(data)
-    } else {
-      this.push(this._update(data))
-    }
-  } catch (e) {
-    err = e
-  } finally {
-    next(err)
-  }
+  return bs58check.encode(
+    encodeRaw(
+      version.version,
+      version.privateKey,
+      version.compressed
+    )
+  )
 }
-CipherBase.prototype._flush = function (done) {
-  var err
-  try {
-    this.push(this.__final())
-  } catch (e) {
-    err = e
-  }
 
-  done(err)
-}
-CipherBase.prototype._finalOrDigest = function (outputEnc) {
-  var outData = this.__final() || Buffer.alloc(0)
-  if (outputEnc) {
-    outData = this._toString(outData, outputEnc, true)
-  }
-  return outData
+module.exports = {
+  decode: decode,
+  decodeRaw: decodeRaw,
+  encode: encode,
+  encodeRaw: encodeRaw
 }
 
-CipherBase.prototype._toString = function (value, enc, fin) {
-  if (!this._decoder) {
-    this._decoder = new StringDecoder(enc)
-    this._encoding = enc
-  }
-
-  if (this._encoding !== enc) throw new Error('can\'t switch encodings')
+}).call(this,require("buffer").Buffer)
+},{"bs58check":83,"buffer":5}]},{},[34])(34)
+});</script>
+        <script>bitcoinjs.bitcoin.networks.shadow = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0xEE80286A,
+    private: 0xEE8031E8
+  },
+  pubKeyHash: 0x3f,
+  scriptHash: 0x7d,
+  wif: 0xbf
+};
 
-  var out = this._decoder.write(value)
-  if (fin) {
-    out += this._decoder.end()
-  }
+bitcoinjs.bitcoin.networks.shadowtn = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x76C0FDFB,
+    private: 0x76C1077A
+  },
+  pubKeyHash: 0x7f,
+  scriptHash: 0xc4,
+  wif: 0xff
+};
 
-  return out
-}
+bitcoinjs.bitcoin.networks.clam = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0xa8c26d64,
+    private: 0xa8c17826
+  },
+  pubKeyHash: 0x89,
+  scriptHash: 0x00, // TODO set this correctly
+  wif: 0x85
+};
 
-module.exports = CipherBase
+bitcoinjs.bitcoin.networks.crown = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x00,
+  scriptHash: 0x05,
+  wif: 0x80
+};
 
-},{"inherits":121,"safe-buffer":128,"stream":28,"string_decoder":29}],87:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var inherits = require('inherits')
-var md5 = require('./md5')
-var RIPEMD160 = require('ripemd160')
-var sha = require('sha.js')
+bitcoinjs.bitcoin.networks.dash = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x4c,
+  scriptHash: 0x10,
+  wif: 0xcc
+};
 
-var Base = require('cipher-base')
+bitcoinjs.bitcoin.networks.maza = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x32,
+  scriptHash: 0x09,
+  wif: 0xe0
+};
 
-function HashNoConstructor (hash) {
-  Base.call(this, 'digest')
+bitcoinjs.bitcoin.networks.dashtn = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x043587cf,
+    private: 0x04358394
+  },
+  pubKeyHash: 0x8c,
+  scriptHash: 0x13,
+  wif: 0xef
+};
 
-  this._hash = hash
-  this.buffers = []
-}
-
-inherits(HashNoConstructor, Base)
+bitcoinjs.bitcoin.networks.game = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x26,
+  scriptHash: 0x05,
+  wif: 0xa6
+};
 
-HashNoConstructor.prototype._update = function (data) {
-  this.buffers.push(data)
-}
+bitcoinjs.bitcoin.networks.namecoin = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x34,
+  scriptHash: 0x00, // TODO set this correctly
+  wif: 0x80
+};
 
-HashNoConstructor.prototype._final = function () {
-  var buf = Buffer.concat(this.buffers)
-  var r = this._hash(buf)
-  this.buffers = null
+bitcoinjs.bitcoin.networks.peercoin = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x37,
+  scriptHash: 0x00, // TODO set this correctly
+  wif: 0xb7
+};
 
-  return r
-}
+bitcoinjs.bitcoin.networks.axe = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x4B,
+  scriptHash: 0xCB, // TODO set this correctly
+  wif: 0xCB
+};
 
-function Hash (hash) {
-  Base.call(this, 'digest')
+bitcoinjs.bitcoin.networks.slimcoin = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0xef6adf10,
+    private: 0xef69ea80
+  },
+  pubKeyHash: 0x3f,
+  scriptHash: 0x7d,
+  wif: 0x46
+};
 
-  this._hash = hash
-}
+bitcoinjs.bitcoin.networks.slimcointn = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x043587CF,
+    private: 0x04358394
+  },
+  pubKeyHash: 0x6f,
+  scriptHash: 0xc4,
+  wif: 0x57
+};
 
-inherits(Hash, Base)
+bitcoinjs.bitcoin.networks.dogecoin = {
+  messagePrefix: '\x19Dogecoin Signed Message:\n',
+  bip32: {
+    public: 0x02facafd,
+    private: 0x02fac398
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x16,
+  wif: 0x9e
+};
 
-Hash.prototype._update = function (data) {
-  this._hash.update(data)
-}
+bitcoinjs.bitcoin.networks.denarius = {
+  messagePrefix: '\x19Denarius Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x5a,
+  wif: 0x9e
+};
 
-Hash.prototype._final = function () {
-  return this._hash.digest()
-}
+bitcoinjs.bitcoin.networks.neblio = {
+  messagePrefix: '\x18Neblio Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x35,
+  scriptHash: 0x70,
+  wif: 0xb5
+};
 
-module.exports = function createHash (alg) {
-  alg = alg.toLowerCase()
-  if (alg === 'md5') return new HashNoConstructor(md5)
-  if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160())
+bitcoinjs.bitcoin.networks.viacoin = {
+  messagePrefix: '\x18Viacoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x47,
+  scriptHash: 0x21,
+  wif: 0xc7
+};
 
-  return new Hash(sha(alg))
-}
+bitcoinjs.bitcoin.networks.viacointestnet = {
+  messagePrefix: '\x18Viacoin Signed Message:\n',
+  bip32: {
+    public: 0x043587cf,
+    private: 0x04358394
+  },
+  pubKeyHash: 0x7f,
+  scriptHash: 0xc4,
+  wif: 0xff
+};
 
-}).call(this,require("buffer").Buffer)
-},{"./md5":89,"buffer":5,"cipher-base":86,"inherits":121,"ripemd160":127,"sha.js":130}],88:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var intSize = 4
-var zeroBuffer = new Buffer(intSize)
-zeroBuffer.fill(0)
+bitcoinjs.bitcoin.networks.gamerscoin = {
+  messagePrefix: '\x19Gamerscoin Signed Message:\n',
+  bip32: {
+    public: 0x019da462,
+    private: 0x019d9cfe
+  },
+  pubKeyHash: 0x26,
+  scriptHash: 0x05,
+  wif: 0xA6
+};
 
-var charSize = 8
-var hashSize = 16
+bitcoinjs.bitcoin.networks.jumbucks = {
+  messagePrefix: '\x19Jumbucks Signed Message:\n',
+  bip32: {
+    public: 0x037a689a,
+    private: 0x037a6460
+  },
+  pubKeyHash: 0x2b,
+  scriptHash: 0x05,
+  wif: 0xab
+};
 
-function toArray (buf) {
-  if ((buf.length % intSize) !== 0) {
-    var len = buf.length + (intSize - (buf.length % intSize))
-    buf = Buffer.concat([buf, zeroBuffer], len)
-  }
+bitcoinjs.bitcoin.networks.zetacoin = {
+  messagePrefix: '\x18Zetacoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x50,
+  scriptHash: 0x09,
+  wif: 0xe0
+};
 
-  var arr = new Array(buf.length >>> 2)
-  for (var i = 0, j = 0; i < buf.length; i += intSize, j++) {
-    arr[j] = buf.readInt32LE(i)
-  }
+bitcoinjs.bitcoin.networks.myriadcoin = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x32,
+  scriptHash: 0x00, // TODO set this correctly
+  wif: 0xb2
+};
 
-  return arr
-}
 
-module.exports = function hash (buf, fn) {
-  var arr = fn(toArray(buf), buf.length * charSize)
-  buf = new Buffer(hashSize)
-  for (var i = 0; i < arr.length; i++) {
-    buf.writeInt32LE(arr[i], i << 2, true)
-  }
-  return buf
-}
+bitcoinjs.bitcoin.networks.onixcoin = {
+    messagePrefix: 'unused',
+    bip32: {
+      public: 0x049d7cb2,
+      private: 0x049d7878
+    },
+    pubKeyHash: 0x4B,
+    scriptHash: 0x05,
+    wif: 0x80
+};
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":5}],89:[function(require,module,exports){
-'use strict'
-/*
- * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
- * Digest Algorithm, as defined in RFC 1321.
- * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- * Distributed under the BSD License
- * See http://pajhome.org.uk/crypt/md5 for more info.
- */
+bitcoinjs.bitcoin.networks.pivx = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x022d2533,
+    private: 0x0221312b
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x0d,
+  wif: 0xd4
+};
 
-var makeHash = require('./make-hash')
+bitcoinjs.bitcoin.networks.pivxtestnet = {
+  messagePrefix: 'unused',
+  bip32: {
+    public: 0x3a8061a0,
+    private: 0x3a805837
+  },
+  pubKeyHash: 0x8b,
+  scriptHash: 0x13,
+  wif: 0xef
+};
 
-/*
- * Calculate the MD5 of an array of little-endian words, and a bit length
- */
-function core_md5 (x, len) {
-  /* append padding */
-  x[len >> 5] |= 0x80 << ((len) % 32)
-  x[(((len + 64) >>> 9) << 4) + 14] = len
+bitcoinjs.bitcoin.networks.fujicoin = {
+  messagePrefix: '\x19FujiCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x24,
+  scriptHash: 0x10,
+  wif: 0xa4
+};
 
-  var a = 1732584193
-  var b = -271733879
-  var c = -1732584194
-  var d = 271733878
+bitcoinjs.bitcoin.networks.nubits = {
+  messagePrefix: '\x18Nu Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x1a,
+  wif: 0x96,
+};
 
-  for (var i = 0; i < x.length; i += 16) {
-    var olda = a
-    var oldb = b
-    var oldc = c
-    var oldd = d
+bitcoinjs.bitcoin.networks.bgold = {
+  messagePrefix: 'unused',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4
+    },
+    pubKeyHash: 38,
+    scriptHash: 23,
+    wif: 128
+};
 
-    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936)
-    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586)
-    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819)
-    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330)
-    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897)
-    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426)
-    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341)
-    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983)
-    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416)
-    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417)
-    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063)
-    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162)
-    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682)
-    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101)
-    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290)
-    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329)
+bitcoinjs.bitcoin.networks.monacoin = {
+    messagePrefix: '\x18Monacoin Signed Message:\n',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4
+    },
+    pubKeyHash: 0x32,
+    scriptHash: 0x37,
+    wif: 0xb0
+};
 
-    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510)
-    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632)
-    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713)
-    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302)
-    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691)
-    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083)
-    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335)
-    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848)
-    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438)
-    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690)
-    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961)
-    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501)
-    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467)
-    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784)
-    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473)
-    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734)
+bitcoinjs.bitcoin.networks.litecoinXprv = {
+    messagePrefix: '\x19Litecoin Signed Message:\n',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4,
+    },
+    pubKeyHash: 0x30,
+    scriptHash: 0x32,
+    wif: 0xb0
+};
 
-    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558)
-    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463)
-    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562)
-    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556)
-    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060)
-    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353)
-    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632)
-    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640)
-    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174)
-    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222)
-    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979)
-    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189)
-    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487)
-    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835)
-    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520)
-    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651)
+bitcoinjs.bitcoin.networks.komodo = {
+  messagePrefix: '\x18Komodo Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4
+  },
+  pubKeyHash: 0x3c,
+  scriptHash: 0x55,
+  wif: 0xbc
+};
 
-    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844)
-    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415)
-    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905)
-    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055)
-    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571)
-    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606)
-    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523)
-    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799)
-    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359)
-    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744)
-    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380)
-    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649)
-    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070)
-    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379)
-    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259)
-    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551)
+bitcoinjs.bitcoin.networks.blackcoin = {
+  messagePrefix: '\x18BlackCoin Signed Message:\n',
+  bip32: {
+    public: 0x02CFBEDE,
+    private: 0x02CFBF60
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x55,
+  wif: 0x99
+};
 
-    a = safe_add(a, olda)
-    b = safe_add(b, oldb)
-    c = safe_add(c, oldc)
-    d = safe_add(d, oldd)
-  }
+bitcoinjs.bitcoin.networks.beetlecoin = {
+  messagePrefix: '\x19Beetlecoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4
+  },
+  pubKeyHash: 0x1A,
+  scriptHash: 0x55,
+  wif: 0x99,
+};
 
-  return [a, b, c, d]
-}
 
-/*
- * These functions implement the four basic operations the algorithm uses.
- */
-function md5_cmn (q, a, b, x, s, t) {
-  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
-}
+bitcoinjs.bitcoin.networks.adcoin = {
+  messagePrefix: '\x18AdCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x17,
+  scriptHash: 0x05,
+  wif: 0xb0,
+};
 
-function md5_ff (a, b, c, d, x, s, t) {
-  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
-}
+bitcoinjs.bitcoin.networks.asiacoin = {
+  messagePrefix: '\x18AsiaCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x17,
+  scriptHash: 0x08,
+  wif: 0x97,
+};
 
-function md5_gg (a, b, c, d, x, s, t) {
-  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
-}
+bitcoinjs.bitcoin.networks.auroracoin = {
+  messagePrefix: '\x18AuroraCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x17,
+  scriptHash: 0x05,
+  wif: 0x97,
+};
 
-function md5_hh (a, b, c, d, x, s, t) {
-  return md5_cmn(b ^ c ^ d, a, b, x, s, t)
-}
+bitcoinjs.bitcoin.networks.bata = {
+  messagePrefix: '\x18Bata Signed Message:\n',
+  bip32: {
+    public: 0xA40C86FA,
+    private: 0xA40B91BD,
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x05,
+  wif: 0xa4,
+};
 
-function md5_ii (a, b, c, d, x, s, t) {
-  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
-}
+bitcoinjs.bitcoin.networks.belacoin = {
+  messagePrefix: '\x18BelaCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x05,
+  wif: 0x99,
+};
 
-/*
- * Add integers, wrapping at 2^32. This uses 16-bit operations internally
- * to work around bugs in some JS interpreters.
- */
-function safe_add (x, y) {
-  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
-  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
-  return (msw << 16) | (lsw & 0xFFFF)
-}
+bitcoinjs.bitcoin.networks.atom = {
+  messagePrefix: '\x18Bitcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x17,
+  scriptHash: 0x0a,
+  wif: 0x80,
+};
 
-/*
- * Bitwise rotate a 32-bit number to the left.
- */
-function bit_rol (num, cnt) {
-  return (num << cnt) | (num >>> (32 - cnt))
-}
+bitcoinjs.bitcoin.networks.bitcoinplus = {
+  messagePrefix: '\x18BitcoinPlus Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x08,
+  wif: 0x99,
+};
 
-module.exports = function md5 (buf) {
-  return makeHash(buf, core_md5)
-}
+bitcoinjs.bitcoin.networks.bitcore = {
+  messagePrefix: '\x18BitCore Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x00,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
 
-},{"./make-hash":88}],90:[function(require,module,exports){
-'use strict'
-var inherits = require('inherits')
-var Legacy = require('./legacy')
-var Base = require('cipher-base')
-var Buffer = require('safe-buffer').Buffer
-var md5 = require('create-hash/md5')
-var RIPEMD160 = require('ripemd160')
+bitcoinjs.bitcoin.networks.bitsend = {
+  messagePrefix: '\x18Bitsend Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x66,
+  scriptHash: 0x05,
+  wif: 0xcc,
+};
 
-var sha = require('sha.js')
+bitcoinjs.bitcoin.networks.britcoin = {
+  messagePrefix: '\x18BritCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x55,
+  wif: 0x99,
+};
 
-var ZEROS = Buffer.alloc(128)
+bitcoinjs.bitcoin.networks.canadaecoin = {
+  messagePrefix: '\x18Canada eCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x1c,
+  scriptHash: 0x05,
+  wif: 0x9c,
+};
 
-function Hmac (alg, key) {
-  Base.call(this, 'digest')
-  if (typeof key === 'string') {
-    key = Buffer.from(key)
-  }
+bitcoinjs.bitcoin.networks.cannacoin = {
+  messagePrefix: '\x18Cannacoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x1c,
+  scriptHash: 0x05,
+  wif: 0x9c,
+};
 
-  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
+bitcoinjs.bitcoin.networks.clubcoin = {
+  messagePrefix: '\x18ClubCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1c,
+  scriptHash: 0x55,
+  wif: 0x99,
+};
 
-  this._alg = alg
-  this._key = key
-  if (key.length > blocksize) {
-    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
-    key = hash.update(key).digest()
-  } else if (key.length < blocksize) {
-    key = Buffer.concat([key, ZEROS], blocksize)
-  }
+bitcoinjs.bitcoin.networks.compcoin = {
+  messagePrefix: '\x18CompCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x1c,
+  scriptHash: 0x55,
+  wif: 0x9c,
+};
 
-  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
-  var opad = this._opad = Buffer.allocUnsafe(blocksize)
+bitcoinjs.bitcoin.networks.crave = {
+  messagePrefix: '\x18DarkNet Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x46,
+  scriptHash: 0x55,
+  wif: 0x99,
+};
 
-  for (var i = 0; i < blocksize; i++) {
-    ipad[i] = key[i] ^ 0x36
-    opad[i] = key[i] ^ 0x5C
-  }
-  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
-  this._hash.update(ipad)
-}
+bitcoinjs.bitcoin.networks.defcoin = {
+  messagePrefix: '\x18defcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x05,
+  wif: 0x9e,
+};
 
-inherits(Hmac, Base)
+bitcoinjs.bitcoin.networks.diamond = {
+  messagePrefix: '\x18Diamond Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x5a,
+  scriptHash: 0x08,
+  wif: 0xda,
+};
 
-Hmac.prototype._update = function (data) {
-  this._hash.update(data)
-}
+bitcoinjs.bitcoin.networks.digibyte = {
+  messagePrefix: '\x18DigiByte Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
 
-Hmac.prototype._final = function () {
-  var h = this._hash.digest()
-  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
-  return hash.update(this._opad).update(h).digest()
-}
+bitcoinjs.bitcoin.networks.digitalcoin = {
+  messagePrefix: '\x18Digitalcoin Signed Message:\n',
+  bip32: {
+    public: 0x9e0488B2,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x05,
+  wif: 0x9e,
+};
 
-module.exports = function createHmac (alg, key) {
-  alg = alg.toLowerCase()
-  if (alg === 'rmd160' || alg === 'ripemd160') {
-    return new Hmac('rmd160', key)
-  }
-  if (alg === 'md5') {
-    return new Legacy(md5, key)
-  }
-  return new Hmac(alg, key)
-}
+bitcoinjs.bitcoin.networks.ecoin = {
+  messagePrefix: '\x18eCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x5c,
+  scriptHash: 0x14,
+  wif: 0xdc,
+};
 
-},{"./legacy":91,"cipher-base":86,"create-hash/md5":89,"inherits":121,"ripemd160":127,"safe-buffer":128,"sha.js":130}],91:[function(require,module,exports){
-'use strict'
-var inherits = require('inherits')
-var Buffer = require('safe-buffer').Buffer
+bitcoinjs.bitcoin.networks.edrcoin = {
+  messagePrefix: '\x18EDRcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x5d,
+  scriptHash: 0x1c,
+  wif: 0xdd,
+};
 
-var Base = require('cipher-base')
+bitcoinjs.bitcoin.networks.egulden = {
+  messagePrefix: '\x18Egulden Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x30,
+  scriptHash: 0x05,
+  wif: 0xb0,
+};
 
-var ZEROS = Buffer.alloc(128)
-var blocksize = 64
+bitcoinjs.bitcoin.networks.einsteinium = {
+  messagePrefix: '\x18Einsteinium Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x21,
+  scriptHash: 0x05,
+  wif: 0xa1,
+};
 
-function Hmac (alg, key) {
-  Base.call(this, 'digest')
-  if (typeof key === 'string') {
-    key = Buffer.from(key)
-  }
+bitcoinjs.bitcoin.networks.europecoin = {
+  messagePrefix: '\x18Bitcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x21,
+  scriptHash: 0x05,
+  wif: 0xa8,
+};
 
-  this._alg = alg
-  this._key = key
+bitcoinjs.bitcoin.networks.exclusivecoin = {
+  messagePrefix: '\x18ExclusiveCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x21,
+  scriptHash: 0x89,
+  wif: 0xa1,
+};
 
-  if (key.length > blocksize) {
-    key = alg(key)
-  } else if (key.length < blocksize) {
-    key = Buffer.concat([key, ZEROS], blocksize)
-  }
+bitcoinjs.bitcoin.networks.feathercoin = {
+  messagePrefix: '\x18Feathercoin Signed Message:\n',
+  bip32: {
+    public: 0x0488BC26,
+    private: 0x0488DAEE,
+  },
+  pubKeyHash: 0x0e,
+  scriptHash: 0x05,
+  wif: 0x8e,
+};
 
-  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
-  var opad = this._opad = Buffer.allocUnsafe(blocksize)
+bitcoinjs.bitcoin.networks.firstcoin = {
+  messagePrefix: '\x18FirstCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x23,
+  scriptHash: 0x05,
+  wif: 0xa3,
+};
 
-  for (var i = 0; i < blocksize; i++) {
-    ipad[i] = key[i] ^ 0x36
-    opad[i] = key[i] ^ 0x5C
-  }
+bitcoinjs.bitcoin.networks.flashcoin = {
+  messagePrefix: '\x18Flashcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x44,
+  scriptHash: 0x82,
+  wif: 0xc4,
+};
 
-  this._hash = [ipad]
-}
+bitcoinjs.bitcoin.networks.gcr = {
+  messagePrefix: '\x18GCR Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x26,
+  scriptHash: 0x61,
+  wif: 0x9a,
+};
 
-inherits(Hmac, Base)
+bitcoinjs.bitcoin.networks.gobyte = {
+  messagePrefix: '\x18DarkCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x26,
+  scriptHash: 0x0a,
+  wif: 0xc6,
+};
 
-Hmac.prototype._update = function (data) {
-  this._hash.push(data)
-}
+bitcoinjs.bitcoin.networks.gridcoin = {
+  messagePrefix: '\x18Gridcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x3e,
+  scriptHash: 0x55,
+  wif: 0xbe,
+};
 
-Hmac.prototype._final = function () {
-  var h = this._alg(Buffer.concat(this._hash))
-  return this._alg(Buffer.concat([this._opad, h]))
-}
-module.exports = Hmac
+bitcoinjs.bitcoin.networks.gulden = {
+  messagePrefix: '\x18Guldencoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x26,
+  scriptHash: 0x62,
+  wif: 0x62,
+};
 
-},{"cipher-base":86,"inherits":121,"safe-buffer":128}],92:[function(require,module,exports){
-var assert = require('assert')
-var BigInteger = require('bigi')
+bitcoinjs.bitcoin.networks.helleniccoin = {
+  messagePrefix: '\x18helleniccoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x30,
+  scriptHash: 0x05,
+  wif: 0xb0,
+};
 
-var Point = require('./point')
+bitcoinjs.bitcoin.networks.hempcoin = {
+  messagePrefix: '\x18Hempcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x28,
+  scriptHash: 0x08,
+  wif: 0xa8,
+};
 
-function Curve (p, a, b, Gx, Gy, n, h) {
-  this.p = p
-  this.a = a
-  this.b = b
-  this.G = Point.fromAffine(this, Gx, Gy)
-  this.n = n
-  this.h = h
+bitcoinjs.bitcoin.networks.insane = {
+  messagePrefix: '\x18INSaNe Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x66,
+  scriptHash: 0x39,
+  wif: 0x37,
+};
 
-  this.infinity = new Point(this, null, null, BigInteger.ZERO)
+bitcoinjs.bitcoin.networks.iop = {
+  messagePrefix: '\x18IoP Signed Message:\n',
+  bip32: {
+    public: 0x2780915F,
+    private: 0xAE3416F6,
+  },
+  pubKeyHash: 0x75,
+  scriptHash: 0xae,
+  wif: 0x31,
+};
 
-  // result caching
-  this.pOverFour = p.add(BigInteger.ONE).shiftRight(2)
+bitcoinjs.bitcoin.networks.ixcoin = {
+  messagePrefix: '\x18Ixcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x8a,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
 
-  // determine size of p in bytes
-  this.pLength = Math.floor((this.p.bitLength() + 7) / 8)
-}
+bitcoinjs.bitcoin.networks.kobocoin = {
+  messagePrefix: '\x18Kobocoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x23,
+  scriptHash: 0x1c,
+  wif: 0xa3,
+};
 
-Curve.prototype.pointFromX = function (isOdd, x) {
-  var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p)
-  var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves
+bitcoinjs.bitcoin.networks.landcoin = {
+  messagePrefix: '\x18Landcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x30,
+  scriptHash: 0x7a,
+  wif: 0xb0,
+};
 
-  var y = beta
-  if (beta.isEven() ^ !isOdd) {
-    y = this.p.subtract(y) // -y % p
-  }
+bitcoinjs.bitcoin.networks.lbry = {
+  messagePrefix: '\x18LBRYcrd Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x55,
+  scriptHash: 0x7a,
+  wif: 0x1c,
+};
 
-  return Point.fromAffine(this, x, y)
-}
+bitcoinjs.bitcoin.networks.linx = {
+  messagePrefix: '\x18LinX Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x4b,
+  scriptHash: 0x05,
+  wif: 0xcb,
+};
 
-Curve.prototype.isInfinity = function (Q) {
-  if (Q === this.infinity) return true
+bitcoinjs.bitcoin.networks.litecoincash = {
+  messagePrefix: '\x18Litecoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1c,
+  scriptHash: 0x05,
+  wif: 0xb0,
+};
 
-  return Q.z.signum() === 0 && Q.y.signum() !== 0
-}
+bitcoinjs.bitcoin.networks.lynx = {
+  messagePrefix: '\x18Lynx Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x2d,
+  scriptHash: 0x32,
+  wif: 0xad,
+};
 
-Curve.prototype.isOnCurve = function (Q) {
-  if (this.isInfinity(Q)) return true
+bitcoinjs.bitcoin.networks.minexcoin = {
+  messagePrefix: '\x18Bitcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x4b,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
 
-  var x = Q.affineX
-  var y = Q.affineY
-  var a = this.a
-  var b = this.b
-  var p = this.p
+bitcoinjs.bitcoin.networks.navcoin = {
+  messagePrefix: '\x18Navcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x35,
+  scriptHash: 0x55,
+  wif: 0x96,
+};
 
-  // Check that xQ and yQ are integers in the interval [0, p - 1]
-  if (x.signum() < 0 || x.compareTo(p) >= 0) return false
-  if (y.signum() < 0 || y.compareTo(p) >= 0) return false
+bitcoinjs.bitcoin.networks.neoscoin = {
+  messagePrefix: '\x18NeosCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x35,
+  scriptHash: 0x05,
+  wif: 0xb1,
+};
 
-  // and check that y^2 = x^3 + ax + b (mod p)
-  var lhs = y.square().mod(p)
-  var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p)
-  return lhs.equals(rhs)
-}
+bitcoinjs.bitcoin.networks.neurocoin = {
+  messagePrefix: '\x18PPCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x35,
+  scriptHash: 0x75,
+  wif: 0xb5,
+};
 
-/**
- * Validate an elliptic curve point.
- *
- * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
- */
-Curve.prototype.validate = function (Q) {
-  // Check Q != O
-  assert(!this.isInfinity(Q), 'Point is at infinity')
-  assert(this.isOnCurve(Q), 'Point is not on the curve')
+bitcoinjs.bitcoin.networks.newyorkc = {
+  messagePrefix: '\x18newyorkc Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x3c,
+  scriptHash: 0x16,
+  wif: 0xbc,
+};
 
-  // Check nQ = O (where Q is a scalar multiple of G)
-  var nQ = Q.multiply(this.n)
-  assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G')
+bitcoinjs.bitcoin.networks.novacoin = {
+  messagePrefix: '\x18NovaCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x08,
+  scriptHash: 0x14,
+  wif: 0x88,
+};
 
-  return true
-}
+bitcoinjs.bitcoin.networks.nushares = {
+  messagePrefix: '\x18Nu Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x3f,
+  scriptHash: 0x40,
+  wif: 0x95,
+};
 
-module.exports = Curve
+bitcoinjs.bitcoin.networks.okcash = {
+  messagePrefix: '\x18OKCash Signed Message:\n',
+  bip32: {
+    public: 0x03CC23D7,
+    private: 0x03CC1C73,
+  },
+  pubKeyHash: 0x37,
+  scriptHash: 0x1c,
+  wif: 0x03,
+};
 
-},{"./point":96,"assert":1,"bigi":39}],93:[function(require,module,exports){
-module.exports={
-  "secp128r1": {
-    "p": "fffffffdffffffffffffffffffffffff",
-    "a": "fffffffdfffffffffffffffffffffffc",
-    "b": "e87579c11079f43dd824993c2cee5ed3",
-    "n": "fffffffe0000000075a30d1b9038a115",
-    "h": "01",
-    "Gx": "161ff7528b899b2d0c28607ca52c5b86",
-    "Gy": "cf5ac8395bafeb13c02da292dded7a83"
+bitcoinjs.bitcoin.networks.omnicore = {
+  messagePrefix: '\x18Bitcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
   },
-  "secp160k1": {
-    "p": "fffffffffffffffffffffffffffffffeffffac73",
-    "a": "00",
-    "b": "07",
-    "n": "0100000000000000000001b8fa16dfab9aca16b6b3",
-    "h": "01",
-    "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb",
-    "Gy": "938cf935318fdced6bc28286531733c3f03c4fee"
+  pubKeyHash: 0x00,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
+
+bitcoinjs.bitcoin.networks.pesobit = {
+  messagePrefix: '\x18Pesobit Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
   },
-  "secp160r1": {
-    "p": "ffffffffffffffffffffffffffffffff7fffffff",
-    "a": "ffffffffffffffffffffffffffffffff7ffffffc",
-    "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45",
-    "n": "0100000000000000000001f4c8f927aed3ca752257",
-    "h": "01",
-    "Gx": "4a96b5688ef573284664698968c38bb913cbfc82",
-    "Gy": "23a628553168947d59dcc912042351377ac5fb32"
+  pubKeyHash: 0x37,
+  scriptHash: 0x55,
+  wif: 0xb7,
+};
+
+bitcoinjs.bitcoin.networks.pinkcoin = {
+  messagePrefix: '\x18Pinkcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
   },
-  "secp192k1": {
-    "p": "fffffffffffffffffffffffffffffffffffffffeffffee37",
-    "a": "00",
-    "b": "03",
-    "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d",
-    "h": "01",
-    "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d",
-    "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d"
+  pubKeyHash: 0x03,
+  scriptHash: 0x1c,
+  wif: 0x83,
+};
+
+bitcoinjs.bitcoin.networks.poswcoin = {
+  messagePrefix: '\x18Poswcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
   },
-  "secp192r1": {
-    "p": "fffffffffffffffffffffffffffffffeffffffffffffffff",
-    "a": "fffffffffffffffffffffffffffffffefffffffffffffffc",
-    "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1",
-    "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831",
-    "h": "01",
-    "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012",
-    "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811"
+  pubKeyHash: 0x37,
+  scriptHash: 0x55,
+  wif: 0xb7,
+};
+
+bitcoinjs.bitcoin.networks.potcoin = {
+  messagePrefix: '\x18Potcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
   },
-  "secp256k1": {
-    "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f",
-    "a": "00",
-    "b": "07",
-    "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
-    "h": "01",
-    "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
-    "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
+  pubKeyHash: 0x37,
+  scriptHash: 0x05,
+  wif: 0xb7,
+};
+
+bitcoinjs.bitcoin.networks.putincoin = {
+  messagePrefix: '\x18PutinCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
   },
-  "secp256r1": {
-    "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
-    "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
-    "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
-    "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
-    "h": "01",
-    "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
-    "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5"
-  }
-}
+  pubKeyHash: 0x37,
+  scriptHash: 0x14,
+  wif: 0xb7,
+};
 
-},{}],94:[function(require,module,exports){
-var Point = require('./point')
-var Curve = require('./curve')
+bitcoinjs.bitcoin.networks.reddcoin = {
+  messagePrefix: '\x18Reddcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x3d,
+  scriptHash: 0x05,
+  wif: 0xbd,
+};
 
-var getCurveByName = require('./names')
+bitcoinjs.bitcoin.networks.revolutionvr = {
+  messagePrefix: '\x18Voxels Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x46,
+  scriptHash: 0x05,
+  wif: 0xc6,
+};
 
-module.exports = {
-  Curve: Curve,
-  Point: Point,
-  getCurveByName: getCurveByName
-}
+bitcoinjs.bitcoin.networks.rubycoin = {
+  messagePrefix: '\x18Rubycoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x3c,
+  scriptHash: 0x55,
+  wif: 0xbc,
+};
 
-},{"./curve":92,"./names":95,"./point":96}],95:[function(require,module,exports){
-var BigInteger = require('bigi')
+bitcoinjs.bitcoin.networks.smileycoin = {
+  messagePrefix: '\x18Smileycoin Signed Message:\n',
+  bip32: {
+    public: 0x1E562D9A,
+    private: 0x1E5631BC,
+  },
+  pubKeyHash: 0x19,
+  scriptHash: 0x05,
+  wif: 0x05,
+};
 
-var curves = require('./curves.json')
-var Curve = require('./curve')
+bitcoinjs.bitcoin.networks.solarcoin = {
+  messagePrefix: '\x18SolarCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x12,
+  scriptHash: 0x05,
+  wif: 0x92,
+};
 
-function getCurveByName (name) {
-  var curve = curves[name]
-  if (!curve) return null
+bitcoinjs.bitcoin.networks.stratis = {
+  messagePrefix: '\x18Stratis Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x3f,
+  scriptHash: 0x7d,
+  wif: 0xbf,
+};
 
-  var p = new BigInteger(curve.p, 16)
-  var a = new BigInteger(curve.a, 16)
-  var b = new BigInteger(curve.b, 16)
-  var n = new BigInteger(curve.n, 16)
-  var h = new BigInteger(curve.h, 16)
-  var Gx = new BigInteger(curve.Gx, 16)
-  var Gy = new BigInteger(curve.Gy, 16)
+bitcoinjs.bitcoin.networks.syscoin = {
+  messagePrefix: '\x18Syscoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x3f,
+  scriptHash: 0x05,
+  wif: 0xbf,
+};
 
-  return new Curve(p, a, b, Gx, Gy, n, h)
-}
 
-module.exports = getCurveByName
+bitcoinjs.bitcoin.networks.toa = {
+  messagePrefix: '\x18TOA Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x41,
+  scriptHash: 0x17,
+  wif: 0xc1,
+};
 
-},{"./curve":92,"./curves.json":93,"bigi":39}],96:[function(require,module,exports){
-(function (Buffer){
-var assert = require('assert')
-var BigInteger = require('bigi')
+bitcoinjs.bitcoin.networks.ultimatesecurecash = {
+  messagePrefix: '\x18UltimateSecureCash Signed Message:\n',
+  bip32: {
+    public: 0xEE80286A,
+    private: 0xEE8031E8,
+  },
+  pubKeyHash: 0x44,
+  scriptHash: 0x7d,
+  wif: 0xbf,
+};
 
-var THREE = BigInteger.valueOf(3)
+bitcoinjs.bitcoin.networks.unobtanium = {
+  messagePrefix: '\x18Unobtanium Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x82,
+  scriptHash: 0x1e,
+  wif: 0xe0,
+};
 
-function Point (curve, x, y, z) {
-  assert.notStrictEqual(z, undefined, 'Missing Z coordinate')
+bitcoinjs.bitcoin.networks.vcash = {
+  messagePrefix: '\x18Vcash Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x47,
+  scriptHash: 0x08,
+  wif: 0xc7,
+};
 
-  this.curve = curve
-  this.x = x
-  this.y = y
-  this.z = z
-  this._zInv = null
+bitcoinjs.bitcoin.networks.verge = {
+  messagePrefix: '\x18VERGE Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x1e,
+  scriptHash: 0x21,
+  wif: 0x9e,
+};
 
-  this.compressed = true
-}
+bitcoinjs.bitcoin.networks.vertcoin = {
+  messagePrefix: '\x18Vertcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x47,
+  scriptHash: 0x05,
+  wif: 0x80,
+};
 
-Object.defineProperty(Point.prototype, 'zInv', {
-  get: function () {
-    if (this._zInv === null) {
-      this._zInv = this.z.modInverse(this.curve.p)
-    }
-
-    return this._zInv
-  }
-})
-
-Object.defineProperty(Point.prototype, 'affineX', {
-  get: function () {
-    return this.x.multiply(this.zInv).mod(this.curve.p)
-  }
-})
-
-Object.defineProperty(Point.prototype, 'affineY', {
-  get: function () {
-    return this.y.multiply(this.zInv).mod(this.curve.p)
-  }
-})
+bitcoinjs.bitcoin.networks.vivo = {
+  messagePrefix: '\x18DarkCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x46,
+  scriptHash: 0x0a,
+  wif: 0xc6,
+};
 
-Point.fromAffine = function (curve, x, y) {
-  return new Point(curve, x, y, BigInteger.ONE)
-}
+bitcoinjs.bitcoin.networks.vpncoin = {
+  messagePrefix: '\x18VpnCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x47,
+  scriptHash: 0x05,
+  wif: 0xc7,
+};
 
-Point.prototype.equals = function (other) {
-  if (other === this) return true
-  if (this.curve.isInfinity(this)) return this.curve.isInfinity(other)
-  if (this.curve.isInfinity(other)) return this.curve.isInfinity(this)
+bitcoinjs.bitcoin.networks.whitecoin = {
+  messagePrefix: '\x18Whitecoin Signed Message:\n',
+  bip32: {
+    public: 0x04887F1E,
+    private: 0x048894ED,
+  },
+  pubKeyHash: 0x49,
+  scriptHash: 0x57,
+  wif: 0xc9,
+};
 
-  // u = Y2 * Z1 - Y1 * Z2
-  var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p)
+bitcoinjs.bitcoin.networks.wincoin = {
+  messagePrefix: '\x18WinCoin Signed Message:\n',
+  bip32: {
+    public: 0x0488b21e,
+    private: 0x0488ade4,
+  },
+  pubKeyHash: 0x49,
+  scriptHash: 0x1c,
+  wif: 0xc9,
+};
 
-  if (u.signum() !== 0) return false
+bitcoinjs.bitcoin.networks.zcoin = {
+  messagePrefix: '\x18Zcoin Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x52,
+  scriptHash: 0x07,
+  wif: 0xd2,
+};
 
-  // v = X2 * Z1 - X1 * Z2
-  var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p)
+bitcoinjs.bitcoin.networks.zcash = {
+  messagePrefix: '\x18Zcash Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4,
+  },
+  pubKeyHash: 0x1CB8,
+  scriptHash: 0x1CBD,
+  wif: 0x80,
+};
+</script>
+        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bitcoinjsBip38 = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+var asn1 = exports;
 
-  return v.signum() === 0
-}
+asn1.bignum = require('bn.js');
 
-Point.prototype.negate = function () {
-  var y = this.curve.p.subtract(this.y)
+asn1.define = require('./asn1/api').define;
+asn1.base = require('./asn1/base');
+asn1.constants = require('./asn1/constants');
+asn1.decoders = require('./asn1/decoders');
+asn1.encoders = require('./asn1/encoders');
 
-  return new Point(this.curve, this.x, y, this.z)
-}
+},{"./asn1/api":2,"./asn1/base":4,"./asn1/constants":8,"./asn1/decoders":10,"./asn1/encoders":13,"bn.js":17}],2:[function(require,module,exports){
+var asn1 = require('../asn1');
+var inherits = require('inherits');
 
-Point.prototype.add = function (b) {
-  if (this.curve.isInfinity(this)) return b
-  if (this.curve.isInfinity(b)) return this
+var api = exports;
 
-  var x1 = this.x
-  var y1 = this.y
-  var x2 = b.x
-  var y2 = b.y
+api.define = function define(name, body) {
+  return new Entity(name, body);
+};
 
-  // u = Y2 * Z1 - Y1 * Z2
-  var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p)
-  // v = X2 * Z1 - X1 * Z2
-  var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p)
+function Entity(name, body) {
+  this.name = name;
+  this.body = body;
 
-  if (v.signum() === 0) {
-    if (u.signum() === 0) {
-      return this.twice() // this == b, so double
-    }
+  this.decoders = {};
+  this.encoders = {};
+};
 
-    return this.curve.infinity // this = -b, so infinity
+Entity.prototype._createNamed = function createNamed(base) {
+  var named;
+  try {
+    named = require('vm').runInThisContext(
+      '(function ' + this.name + '(entity) {\n' +
+      '  this._initNamed(entity);\n' +
+      '})'
+    );
+  } catch (e) {
+    named = function (entity) {
+      this._initNamed(entity);
+    };
   }
+  inherits(named, base);
+  named.prototype._initNamed = function initnamed(entity) {
+    base.call(this, entity);
+  };
 
-  var v2 = v.square()
-  var v3 = v2.multiply(v)
-  var x1v2 = x1.multiply(v2)
-  var zu2 = u.square().multiply(this.z)
-
-  // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
-  var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p)
-  // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
-  var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p)
-  // z3 = v^3 * z1 * z2
-  var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p)
+  return new named(this);
+};
 
-  return new Point(this.curve, x3, y3, z3)
-}
+Entity.prototype._getDecoder = function _getDecoder(enc) {
+  enc = enc || 'der';
+  // Lazily create decoder
+  if (!this.decoders.hasOwnProperty(enc))
+    this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
+  return this.decoders[enc];
+};
 
-Point.prototype.twice = function () {
-  if (this.curve.isInfinity(this)) return this
-  if (this.y.signum() === 0) return this.curve.infinity
+Entity.prototype.decode = function decode(data, enc, options) {
+  return this._getDecoder(enc).decode(data, options);
+};
 
-  var x1 = this.x
-  var y1 = this.y
+Entity.prototype._getEncoder = function _getEncoder(enc) {
+  enc = enc || 'der';
+  // Lazily create encoder
+  if (!this.encoders.hasOwnProperty(enc))
+    this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
+  return this.encoders[enc];
+};
 
-  var y1z1 = y1.multiply(this.z).mod(this.curve.p)
-  var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p)
-  var a = this.curve.a
+Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
+  return this._getEncoder(enc).encode(data, reporter);
+};
 
-  // w = 3 * x1^2 + a * z1^2
-  var w = x1.square().multiply(THREE)
+},{"../asn1":1,"inherits":95,"vm":149}],3:[function(require,module,exports){
+var inherits = require('inherits');
+var Reporter = require('../base').Reporter;
+var Buffer = require('buffer').Buffer;
 
-  if (a.signum() !== 0) {
-    w = w.add(this.z.square().multiply(a))
+function DecoderBuffer(base, options) {
+  Reporter.call(this, options);
+  if (!Buffer.isBuffer(base)) {
+    this.error('Input not Buffer');
+    return;
   }
 
-  w = w.mod(this.curve.p)
-  // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
-  var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p)
-  // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
-  var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p)
-  // z3 = 8 * (y1 * z1)^3
-  var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p)
-
-  return new Point(this.curve, x3, y3, z3)
+  this.base = base;
+  this.offset = 0;
+  this.length = base.length;
 }
+inherits(DecoderBuffer, Reporter);
+exports.DecoderBuffer = DecoderBuffer;
 
-// Simple NAF (Non-Adjacent Form) multiplication algorithm
-// TODO: modularize the multiplication algorithm
-Point.prototype.multiply = function (k) {
-  if (this.curve.isInfinity(this)) return this
-  if (k.signum() === 0) return this.curve.infinity
-
-  var e = k
-  var h = e.multiply(THREE)
+DecoderBuffer.prototype.save = function save() {
+  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
+};
 
-  var neg = this.negate()
-  var R = this
+DecoderBuffer.prototype.restore = function restore(save) {
+  // Return skipped data
+  var res = new DecoderBuffer(this.base);
+  res.offset = save.offset;
+  res.length = this.offset;
 
-  for (var i = h.bitLength() - 2; i > 0; --i) {
-    var hBit = h.testBit(i)
-    var eBit = e.testBit(i)
+  this.offset = save.offset;
+  Reporter.prototype.restore.call(this, save.reporter);
 
-    R = R.twice()
+  return res;
+};
 
-    if (hBit !== eBit) {
-      R = R.add(hBit ? this : neg)
-    }
-  }
+DecoderBuffer.prototype.isEmpty = function isEmpty() {
+  return this.offset === this.length;
+};
 
-  return R
+DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
+  if (this.offset + 1 <= this.length)
+    return this.base.readUInt8(this.offset++, true);
+  else
+    return this.error(fail || 'DecoderBuffer overrun');
 }
 
-// Compute this*j + x*k (simultaneous multiplication)
-Point.prototype.multiplyTwo = function (j, x, k) {
-  var i = Math.max(j.bitLength(), k.bitLength()) - 1
-  var R = this.curve.infinity
-  var both = this.add(x)
-
-  while (i >= 0) {
-    var jBit = j.testBit(i)
-    var kBit = k.testBit(i)
+DecoderBuffer.prototype.skip = function skip(bytes, fail) {
+  if (!(this.offset + bytes <= this.length))
+    return this.error(fail || 'DecoderBuffer overrun');
 
-    R = R.twice()
+  var res = new DecoderBuffer(this.base);
 
-    if (jBit) {
-      if (kBit) {
-        R = R.add(both)
-      } else {
-        R = R.add(this)
-      }
-    } else if (kBit) {
-      R = R.add(x)
-    }
-    --i
-  }
+  // Share reporter state
+  res._reporterState = this._reporterState;
 
-  return R
+  res.offset = this.offset;
+  res.length = this.offset + bytes;
+  this.offset += bytes;
+  return res;
 }
 
-Point.prototype.getEncoded = function (compressed) {
-  if (compressed == null) compressed = this.compressed
-  if (this.curve.isInfinity(this)) return new Buffer('00', 'hex') // Infinity point encoded is simply '00'
-
-  var x = this.affineX
-  var y = this.affineY
-  var byteLength = this.curve.pLength
-  var buffer
-
-  // 0x02/0x03 | X
-  if (compressed) {
-    buffer = new Buffer(1 + byteLength)
-    buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0)
+DecoderBuffer.prototype.raw = function raw(save) {
+  return this.base.slice(save ? save.offset : this.offset, this.length);
+}
 
-  // 0x04 | X | Y
+function EncoderBuffer(value, reporter) {
+  if (Array.isArray(value)) {
+    this.length = 0;
+    this.value = value.map(function(item) {
+      if (!(item instanceof EncoderBuffer))
+        item = new EncoderBuffer(item, reporter);
+      this.length += item.length;
+      return item;
+    }, this);
+  } else if (typeof value === 'number') {
+    if (!(0 <= value && value <= 0xff))
+      return reporter.error('non-byte EncoderBuffer value');
+    this.value = value;
+    this.length = 1;
+  } else if (typeof value === 'string') {
+    this.value = value;
+    this.length = Buffer.byteLength(value);
+  } else if (Buffer.isBuffer(value)) {
+    this.value = value;
+    this.length = value.length;
   } else {
-    buffer = new Buffer(1 + byteLength + byteLength)
-    buffer.writeUInt8(0x04, 0)
-
-    y.toBuffer(byteLength).copy(buffer, 1 + byteLength)
+    return reporter.error('Unsupported type: ' + typeof value);
   }
-
-  x.toBuffer(byteLength).copy(buffer, 1)
-
-  return buffer
 }
+exports.EncoderBuffer = EncoderBuffer;
 
-Point.decodeFrom = function (curve, buffer) {
-  var type = buffer.readUInt8(0)
-  var compressed = (type !== 4)
-
-  var byteLength = Math.floor((curve.p.bitLength() + 7) / 8)
-  var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength))
+EncoderBuffer.prototype.join = function join(out, offset) {
+  if (!out)
+    out = new Buffer(this.length);
+  if (!offset)
+    offset = 0;
 
-  var Q
-  if (compressed) {
-    assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length')
-    assert(type === 0x02 || type === 0x03, 'Invalid sequence tag')
+  if (this.length === 0)
+    return out;
 
-    var isOdd = (type === 0x03)
-    Q = curve.pointFromX(isOdd, x)
+  if (Array.isArray(this.value)) {
+    this.value.forEach(function(item) {
+      item.join(out, offset);
+      offset += item.length;
+    });
   } else {
-    assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length')
-
-    var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength))
-    Q = Point.fromAffine(curve, x, y)
+    if (typeof this.value === 'number')
+      out[offset] = this.value;
+    else if (typeof this.value === 'string')
+      out.write(this.value, offset);
+    else if (Buffer.isBuffer(this.value))
+      this.value.copy(out, offset);
+    offset += this.length;
   }
 
-  Q.compressed = compressed
-  return Q
-}
-
-Point.prototype.toString = function () {
-  if (this.curve.isInfinity(this)) return '(INFINITY)'
-
-  return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')'
-}
-
-module.exports = Point
+  return out;
+};
 
-}).call(this,require("buffer").Buffer)
-},{"assert":1,"bigi":39,"buffer":5}],97:[function(require,module,exports){
-'use strict';
+},{"../base":4,"buffer":47,"inherits":95}],4:[function(require,module,exports){
+var base = exports;
 
-var elliptic = exports;
+base.Reporter = require('./reporter').Reporter;
+base.DecoderBuffer = require('./buffer').DecoderBuffer;
+base.EncoderBuffer = require('./buffer').EncoderBuffer;
+base.Node = require('./node');
 
-elliptic.version = require('../package.json').version;
-elliptic.utils = require('./elliptic/utils');
-elliptic.rand = require('brorand');
-elliptic.curve = require('./elliptic/curve');
-elliptic.curves = require('./elliptic/curves');
+},{"./buffer":3,"./node":5,"./reporter":6}],5:[function(require,module,exports){
+var Reporter = require('../base').Reporter;
+var EncoderBuffer = require('../base').EncoderBuffer;
+var DecoderBuffer = require('../base').DecoderBuffer;
+var assert = require('minimalistic-assert');
 
-// Protocols
-elliptic.ec = require('./elliptic/ec');
-elliptic.eddsa = require('./elliptic/eddsa');
+// Supported tags
+var tags = [
+  'seq', 'seqof', 'set', 'setof', 'objid', 'bool',
+  'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc',
+  'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str',
+  'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr'
+];
 
-},{"../package.json":112,"./elliptic/curve":100,"./elliptic/curves":103,"./elliptic/ec":104,"./elliptic/eddsa":107,"./elliptic/utils":111,"brorand":82}],98:[function(require,module,exports){
-'use strict';
+// Public methods list
+var methods = [
+  'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice',
+  'any', 'contains'
+].concat(tags);
 
-var BN = require('bn.js');
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var getNAF = utils.getNAF;
-var getJSF = utils.getJSF;
-var assert = utils.assert;
+// Overrided methods list
+var overrided = [
+  '_peekTag', '_decodeTag', '_use',
+  '_decodeStr', '_decodeObjid', '_decodeTime',
+  '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList',
 
-function BaseCurve(type, conf) {
-  this.type = type;
-  this.p = new BN(conf.p, 16);
+  '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime',
+  '_encodeNull', '_encodeInt', '_encodeBool'
+];
 
-  // Use Montgomery, when there is no fast reduction for the prime
-  this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p);
+function Node(enc, parent) {
+  var state = {};
+  this._baseState = state;
 
-  // Useful for many curves
-  this.zero = new BN(0).toRed(this.red);
-  this.one = new BN(1).toRed(this.red);
-  this.two = new BN(2).toRed(this.red);
+  state.enc = enc;
 
-  // Curve configuration, optional
-  this.n = conf.n && new BN(conf.n, 16);
-  this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed);
+  state.parent = parent || null;
+  state.children = null;
 
-  // Temporary arrays
-  this._wnafT1 = new Array(4);
-  this._wnafT2 = new Array(4);
-  this._wnafT3 = new Array(4);
-  this._wnafT4 = new Array(4);
+  // State
+  state.tag = null;
+  state.args = null;
+  state.reverseArgs = null;
+  state.choice = null;
+  state.optional = false;
+  state.any = false;
+  state.obj = false;
+  state.use = null;
+  state.useDecoder = null;
+  state.key = null;
+  state['default'] = null;
+  state.explicit = null;
+  state.implicit = null;
+  state.contains = null;
 
-  // Generalized Greg Maxwell's trick
-  var adjustCount = this.n && this.p.div(this.n);
-  if (!adjustCount || adjustCount.cmpn(100) > 0) {
-    this.redN = null;
-  } else {
-    this._maxwellTrick = true;
-    this.redN = this.n.toRed(this.red);
+  // Should create new instance on each method
+  if (!state.parent) {
+    state.children = [];
+    this._wrap();
   }
 }
-module.exports = BaseCurve;
+module.exports = Node;
 
-BaseCurve.prototype.point = function point() {
-  throw new Error('Not implemented');
+var stateProps = [
+  'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice',
+  'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit',
+  'implicit', 'contains'
+];
+
+Node.prototype.clone = function clone() {
+  var state = this._baseState;
+  var cstate = {};
+  stateProps.forEach(function(prop) {
+    cstate[prop] = state[prop];
+  });
+  var res = new this.constructor(cstate.parent);
+  res._baseState = cstate;
+  return res;
 };
 
-BaseCurve.prototype.validate = function validate() {
-  throw new Error('Not implemented');
+Node.prototype._wrap = function wrap() {
+  var state = this._baseState;
+  methods.forEach(function(method) {
+    this[method] = function _wrappedMethod() {
+      var clone = new this.constructor(this);
+      state.children.push(clone);
+      return clone[method].apply(clone, arguments);
+    };
+  }, this);
 };
 
-BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
-  assert(p.precomputed);
-  var doubles = p._getDoubles();
+Node.prototype._init = function init(body) {
+  var state = this._baseState;
 
-  var naf = getNAF(k, 1);
-  var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1);
-  I /= 3;
+  assert(state.parent === null);
+  body.call(this);
 
-  // Translate into more windowed form
-  var repr = [];
-  for (var j = 0; j < naf.length; j += doubles.step) {
-    var nafW = 0;
-    for (var k = j + doubles.step - 1; k >= j; k--)
-      nafW = (nafW << 1) + naf[k];
-    repr.push(nafW);
-  }
+  // Filter children
+  state.children = state.children.filter(function(child) {
+    return child._baseState.parent === this;
+  }, this);
+  assert.equal(state.children.length, 1, 'Root node can have only one child');
+};
 
-  var a = this.jpoint(null, null, null);
-  var b = this.jpoint(null, null, null);
-  for (var i = I; i > 0; i--) {
-    for (var j = 0; j < repr.length; j++) {
-      var nafW = repr[j];
-      if (nafW === i)
-        b = b.mixedAdd(doubles.points[j]);
-      else if (nafW === -i)
-        b = b.mixedAdd(doubles.points[j].neg());
-    }
-    a = a.add(b);
-  }
-  return a.toP();
-};
-
-BaseCurve.prototype._wnafMul = function _wnafMul(p, k) {
-  var w = 4;
+Node.prototype._useArgs = function useArgs(args) {
+  var state = this._baseState;
 
-  // Precompute window
-  var nafPoints = p._getNAFPoints(w);
-  w = nafPoints.wnd;
-  var wnd = nafPoints.points;
+  // Filter children and args
+  var children = args.filter(function(arg) {
+    return arg instanceof this.constructor;
+  }, this);
+  args = args.filter(function(arg) {
+    return !(arg instanceof this.constructor);
+  }, this);
 
-  // Get NAF form
-  var naf = getNAF(k, w);
+  if (children.length !== 0) {
+    assert(state.children === null);
+    state.children = children;
 
-  // Add `this`*(N+1) for every w-NAF index
-  var acc = this.jpoint(null, null, null);
-  for (var i = naf.length - 1; i >= 0; i--) {
-    // Count zeroes
-    for (var k = 0; i >= 0 && naf[i] === 0; i--)
-      k++;
-    if (i >= 0)
-      k++;
-    acc = acc.dblp(k);
+    // Replace parent to maintain backward link
+    children.forEach(function(child) {
+      child._baseState.parent = this;
+    }, this);
+  }
+  if (args.length !== 0) {
+    assert(state.args === null);
+    state.args = args;
+    state.reverseArgs = args.map(function(arg) {
+      if (typeof arg !== 'object' || arg.constructor !== Object)
+        return arg;
 
-    if (i < 0)
-      break;
-    var z = naf[i];
-    assert(z !== 0);
-    if (p.type === 'affine') {
-      // J +- P
-      if (z > 0)
-        acc = acc.mixedAdd(wnd[(z - 1) >> 1]);
-      else
-        acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg());
-    } else {
-      // J +- J
-      if (z > 0)
-        acc = acc.add(wnd[(z - 1) >> 1]);
-      else
-        acc = acc.add(wnd[(-z - 1) >> 1].neg());
-    }
+      var res = {};
+      Object.keys(arg).forEach(function(key) {
+        if (key == (key | 0))
+          key |= 0;
+        var value = arg[key];
+        res[value] = key;
+      });
+      return res;
+    });
   }
-  return p.type === 'affine' ? acc.toP() : acc;
 };
 
-BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW,
-                                                       points,
-                                                       coeffs,
-                                                       len,
-                                                       jacobianResult) {
-  var wndWidth = this._wnafT1;
-  var wnd = this._wnafT2;
-  var naf = this._wnafT3;
+//
+// Overrided methods
+//
 
-  // Fill all arrays
-  var max = 0;
-  for (var i = 0; i < len; i++) {
-    var p = points[i];
-    var nafPoints = p._getNAFPoints(defW);
-    wndWidth[i] = nafPoints.wnd;
-    wnd[i] = nafPoints.points;
-  }
+overrided.forEach(function(method) {
+  Node.prototype[method] = function _overrided() {
+    var state = this._baseState;
+    throw new Error(method + ' not implemented for encoding: ' + state.enc);
+  };
+});
 
-  // Comb small window NAFs
-  for (var i = len - 1; i >= 1; i -= 2) {
-    var a = i - 1;
-    var b = i;
-    if (wndWidth[a] !== 1 || wndWidth[b] !== 1) {
-      naf[a] = getNAF(coeffs[a], wndWidth[a]);
-      naf[b] = getNAF(coeffs[b], wndWidth[b]);
-      max = Math.max(naf[a].length, max);
-      max = Math.max(naf[b].length, max);
-      continue;
-    }
+//
+// Public methods
+//
 
-    var comb = [
-      points[a], /* 1 */
-      null, /* 3 */
-      null, /* 5 */
-      points[b] /* 7 */
-    ];
+tags.forEach(function(tag) {
+  Node.prototype[tag] = function _tagMethod() {
+    var state = this._baseState;
+    var args = Array.prototype.slice.call(arguments);
 
-    // Try to avoid Projective points, if possible
-    if (points[a].y.cmp(points[b].y) === 0) {
-      comb[1] = points[a].add(points[b]);
-      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
-    } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) {
-      comb[1] = points[a].toJ().mixedAdd(points[b]);
-      comb[2] = points[a].add(points[b].neg());
-    } else {
-      comb[1] = points[a].toJ().mixedAdd(points[b]);
-      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
-    }
+    assert(state.tag === null);
+    state.tag = tag;
 
-    var index = [
-      -3, /* -1 -1 */
-      -1, /* -1 0 */
-      -5, /* -1 1 */
-      -7, /* 0 -1 */
-      0, /* 0 0 */
-      7, /* 0 1 */
-      5, /* 1 -1 */
-      1, /* 1 0 */
-      3  /* 1 1 */
-    ];
+    this._useArgs(args);
 
-    var jsf = getJSF(coeffs[a], coeffs[b]);
-    max = Math.max(jsf[0].length, max);
-    naf[a] = new Array(max);
-    naf[b] = new Array(max);
-    for (var j = 0; j < max; j++) {
-      var ja = jsf[0][j] | 0;
-      var jb = jsf[1][j] | 0;
+    return this;
+  };
+});
 
-      naf[a][j] = index[(ja + 1) * 3 + (jb + 1)];
-      naf[b][j] = 0;
-      wnd[a] = comb;
-    }
-  }
+Node.prototype.use = function use(item) {
+  assert(item);
+  var state = this._baseState;
 
-  var acc = this.jpoint(null, null, null);
-  var tmp = this._wnafT4;
-  for (var i = max; i >= 0; i--) {
-    var k = 0;
+  assert(state.use === null);
+  state.use = item;
 
-    while (i >= 0) {
-      var zero = true;
-      for (var j = 0; j < len; j++) {
-        tmp[j] = naf[j][i] | 0;
-        if (tmp[j] !== 0)
-          zero = false;
-      }
-      if (!zero)
-        break;
-      k++;
-      i--;
-    }
-    if (i >= 0)
-      k++;
-    acc = acc.dblp(k);
-    if (i < 0)
-      break;
+  return this;
+};
 
-    for (var j = 0; j < len; j++) {
-      var z = tmp[j];
-      var p;
-      if (z === 0)
-        continue;
-      else if (z > 0)
-        p = wnd[j][(z - 1) >> 1];
-      else if (z < 0)
-        p = wnd[j][(-z - 1) >> 1].neg();
+Node.prototype.optional = function optional() {
+  var state = this._baseState;
 
-      if (p.type === 'affine')
-        acc = acc.mixedAdd(p);
-      else
-        acc = acc.add(p);
-    }
-  }
-  // Zeroify references
-  for (var i = 0; i < len; i++)
-    wnd[i] = null;
+  state.optional = true;
 
-  if (jacobianResult)
-    return acc;
-  else
-    return acc.toP();
+  return this;
 };
 
-function BasePoint(curve, type) {
-  this.curve = curve;
-  this.type = type;
-  this.precomputed = null;
-}
-BaseCurve.BasePoint = BasePoint;
+Node.prototype.def = function def(val) {
+  var state = this._baseState;
 
-BasePoint.prototype.eq = function eq(/*other*/) {
-  throw new Error('Not implemented');
-};
+  assert(state['default'] === null);
+  state['default'] = val;
+  state.optional = true;
 
-BasePoint.prototype.validate = function validate() {
-  return this.curve.validate(this);
+  return this;
 };
 
-BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
-  bytes = utils.toArray(bytes, enc);
+Node.prototype.explicit = function explicit(num) {
+  var state = this._baseState;
 
-  var len = this.p.byteLength();
+  assert(state.explicit === null && state.implicit === null);
+  state.explicit = num;
 
-  // uncompressed, hybrid-odd, hybrid-even
-  if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) &&
-      bytes.length - 1 === 2 * len) {
-    if (bytes[0] === 0x06)
-      assert(bytes[bytes.length - 1] % 2 === 0);
-    else if (bytes[0] === 0x07)
-      assert(bytes[bytes.length - 1] % 2 === 1);
+  return this;
+};
 
-    var res =  this.point(bytes.slice(1, 1 + len),
-                          bytes.slice(1 + len, 1 + 2 * len));
+Node.prototype.implicit = function implicit(num) {
+  var state = this._baseState;
 
-    return res;
-  } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) &&
-              bytes.length - 1 === len) {
-    return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03);
-  }
-  throw new Error('Unknown point format');
-};
+  assert(state.explicit === null && state.implicit === null);
+  state.implicit = num;
 
-BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) {
-  return this.encode(enc, true);
+  return this;
 };
 
-BasePoint.prototype._encode = function _encode(compact) {
-  var len = this.curve.p.byteLength();
-  var x = this.getX().toArray('be', len);
+Node.prototype.obj = function obj() {
+  var state = this._baseState;
+  var args = Array.prototype.slice.call(arguments);
 
-  if (compact)
-    return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x);
+  state.obj = true;
 
-  return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ;
-};
+  if (args.length !== 0)
+    this._useArgs(args);
 
-BasePoint.prototype.encode = function encode(enc, compact) {
-  return utils.encode(this._encode(compact), enc);
+  return this;
 };
 
-BasePoint.prototype.precompute = function precompute(power) {
-  if (this.precomputed)
-    return this;
+Node.prototype.key = function key(newKey) {
+  var state = this._baseState;
 
-  var precomputed = {
-    doubles: null,
-    naf: null,
-    beta: null
-  };
-  precomputed.naf = this._getNAFPoints(8);
-  precomputed.doubles = this._getDoubles(4, power);
-  precomputed.beta = this._getBeta();
-  this.precomputed = precomputed;
+  assert(state.key === null);
+  state.key = newKey;
 
   return this;
 };
 
-BasePoint.prototype._hasDoubles = function _hasDoubles(k) {
-  if (!this.precomputed)
-    return false;
+Node.prototype.any = function any() {
+  var state = this._baseState;
 
-  var doubles = this.precomputed.doubles;
-  if (!doubles)
-    return false;
+  state.any = true;
 
-  return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step);
+  return this;
 };
 
-BasePoint.prototype._getDoubles = function _getDoubles(step, power) {
-  if (this.precomputed && this.precomputed.doubles)
-    return this.precomputed.doubles;
+Node.prototype.choice = function choice(obj) {
+  var state = this._baseState;
 
-  var doubles = [ this ];
-  var acc = this;
-  for (var i = 0; i < power; i += step) {
-    for (var j = 0; j < step; j++)
-      acc = acc.dbl();
-    doubles.push(acc);
-  }
-  return {
-    step: step,
-    points: doubles
-  };
+  assert(state.choice === null);
+  state.choice = obj;
+  this._useArgs(Object.keys(obj).map(function(key) {
+    return obj[key];
+  }));
+
+  return this;
 };
 
-BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) {
-  if (this.precomputed && this.precomputed.naf)
-    return this.precomputed.naf;
+Node.prototype.contains = function contains(item) {
+  var state = this._baseState;
 
-  var res = [ this ];
-  var max = (1 << wnd) - 1;
-  var dbl = max === 1 ? null : this.dbl();
-  for (var i = 1; i < max; i++)
-    res[i] = res[i - 1].add(dbl);
-  return {
-    wnd: wnd,
-    points: res
-  };
-};
+  assert(state.use === null);
+  state.contains = item;
 
-BasePoint.prototype._getBeta = function _getBeta() {
-  return null;
+  return this;
 };
 
-BasePoint.prototype.dblp = function dblp(k) {
-  var r = this;
-  for (var i = 0; i < k; i++)
-    r = r.dbl();
-  return r;
-};
+//
+// Decoding
+//
 
-},{"../../elliptic":97,"bn.js":81}],99:[function(require,module,exports){
-'use strict';
+Node.prototype._decode = function decode(input, options) {
+  var state = this._baseState;
 
-var curve = require('../curve');
-var elliptic = require('../../elliptic');
-var BN = require('bn.js');
-var inherits = require('inherits');
-var Base = curve.base;
+  // Decode root node
+  if (state.parent === null)
+    return input.wrapResult(state.children[0]._decode(input, options));
 
-var assert = elliptic.utils.assert;
+  var result = state['default'];
+  var present = true;
 
-function EdwardsCurve(conf) {
-  // NOTE: Important as we are creating point in Base.call()
-  this.twisted = (conf.a | 0) !== 1;
-  this.mOneA = this.twisted && (conf.a | 0) === -1;
-  this.extended = this.mOneA;
+  var prevKey = null;
+  if (state.key !== null)
+    prevKey = input.enterKey(state.key);
 
-  Base.call(this, 'edwards', conf);
+  // Check if tag is there
+  if (state.optional) {
+    var tag = null;
+    if (state.explicit !== null)
+      tag = state.explicit;
+    else if (state.implicit !== null)
+      tag = state.implicit;
+    else if (state.tag !== null)
+      tag = state.tag;
 
-  this.a = new BN(conf.a, 16).umod(this.red.m);
-  this.a = this.a.toRed(this.red);
-  this.c = new BN(conf.c, 16).toRed(this.red);
-  this.c2 = this.c.redSqr();
-  this.d = new BN(conf.d, 16).toRed(this.red);
-  this.dd = this.d.redAdd(this.d);
+    if (tag === null && !state.any) {
+      // Trial and Error
+      var save = input.save();
+      try {
+        if (state.choice === null)
+          this._decodeGeneric(state.tag, input, options);
+        else
+          this._decodeChoice(input, options);
+        present = true;
+      } catch (e) {
+        present = false;
+      }
+      input.restore(save);
+    } else {
+      present = this._peekTag(input, tag, state.any);
 
-  assert(!this.twisted || this.c.fromRed().cmpn(1) === 0);
-  this.oneC = (conf.c | 0) === 1;
-}
-inherits(EdwardsCurve, Base);
-module.exports = EdwardsCurve;
+      if (input.isError(present))
+        return present;
+    }
+  }
 
-EdwardsCurve.prototype._mulA = function _mulA(num) {
-  if (this.mOneA)
-    return num.redNeg();
-  else
-    return this.a.redMul(num);
-};
+  // Push object on stack
+  var prevObj;
+  if (state.obj && present)
+    prevObj = input.enterObject();
 
-EdwardsCurve.prototype._mulC = function _mulC(num) {
-  if (this.oneC)
-    return num;
-  else
-    return this.c.redMul(num);
-};
+  if (present) {
+    // Unwrap explicit values
+    if (state.explicit !== null) {
+      var explicit = this._decodeTag(input, state.explicit);
+      if (input.isError(explicit))
+        return explicit;
+      input = explicit;
+    }
 
-// Just for compatibility with Short curve
-EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
-  return this.point(x, y, z, t);
-};
+    var start = input.offset;
 
-EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) {
-  x = new BN(x, 16);
-  if (!x.red)
-    x = x.toRed(this.red);
+    // Unwrap implicit and normal values
+    if (state.use === null && state.choice === null) {
+      if (state.any)
+        var save = input.save();
+      var body = this._decodeTag(
+        input,
+        state.implicit !== null ? state.implicit : state.tag,
+        state.any
+      );
+      if (input.isError(body))
+        return body;
 
-  var x2 = x.redSqr();
-  var rhs = this.c2.redSub(this.a.redMul(x2));
-  var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2));
+      if (state.any)
+        result = input.raw(save);
+      else
+        input = body;
+    }
 
-  var y2 = rhs.redMul(lhs.redInvm());
-  var y = y2.redSqrt();
-  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
-    throw new Error('invalid point');
+    if (options && options.track && state.tag !== null)
+      options.track(input.path(), start, input.length, 'tagged');
 
-  var isOdd = y.fromRed().isOdd();
-  if (odd && !isOdd || !odd && isOdd)
-    y = y.redNeg();
+    if (options && options.track && state.tag !== null)
+      options.track(input.path(), input.offset, input.length, 'content');
 
-  return this.point(x, y);
-};
+    // Select proper method for tag
+    if (state.any)
+      result = result;
+    else if (state.choice === null)
+      result = this._decodeGeneric(state.tag, input, options);
+    else
+      result = this._decodeChoice(input, options);
 
-EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) {
-  y = new BN(y, 16);
-  if (!y.red)
-    y = y.toRed(this.red);
+    if (input.isError(result))
+      return result;
 
-  // x^2 = (y^2 - 1) / (d y^2 + 1)
-  var y2 = y.redSqr();
-  var lhs = y2.redSub(this.one);
-  var rhs = y2.redMul(this.d).redAdd(this.one);
-  var x2 = lhs.redMul(rhs.redInvm());
+    // Decode children
+    if (!state.any && state.choice === null && state.children !== null) {
+      state.children.forEach(function decodeChildren(child) {
+        // NOTE: We are ignoring errors here, to let parser continue with other
+        // parts of encoded data
+        child._decode(input, options);
+      });
+    }
 
-  if (x2.cmp(this.zero) === 0) {
-    if (odd)
-      throw new Error('invalid point');
-    else
-      return this.point(this.zero, y);
+    // Decode contained/encoded by schema, only in bit or octet strings
+    if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) {
+      var data = new DecoderBuffer(result);
+      result = this._getUse(state.contains, input._reporterState.obj)
+          ._decode(data, options);
+    }
   }
 
-  var x = x2.redSqrt();
-  if (x.redSqr().redSub(x2).cmp(this.zero) !== 0)
-    throw new Error('invalid point');
+  // Pop object
+  if (state.obj && present)
+    result = input.leaveObject(prevObj);
 
-  if (x.isOdd() !== odd)
-    x = x.redNeg();
+  // Set key
+  if (state.key !== null && (result !== null || present === true))
+    input.leaveKey(prevKey, state.key, result);
+  else if (prevKey !== null)
+    input.exitKey(prevKey);
 
-  return this.point(x, y);
+  return result;
 };
 
-EdwardsCurve.prototype.validate = function validate(point) {
-  if (point.isInfinity())
-    return true;
+Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) {
+  var state = this._baseState;
 
-  // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2)
-  point.normalize();
+  if (tag === 'seq' || tag === 'set')
+    return null;
+  if (tag === 'seqof' || tag === 'setof')
+    return this._decodeList(input, tag, state.args[0], options);
+  else if (/str$/.test(tag))
+    return this._decodeStr(input, tag, options);
+  else if (tag === 'objid' && state.args)
+    return this._decodeObjid(input, state.args[0], state.args[1], options);
+  else if (tag === 'objid')
+    return this._decodeObjid(input, null, null, options);
+  else if (tag === 'gentime' || tag === 'utctime')
+    return this._decodeTime(input, tag, options);
+  else if (tag === 'null_')
+    return this._decodeNull(input, options);
+  else if (tag === 'bool')
+    return this._decodeBool(input, options);
+  else if (tag === 'objDesc')
+    return this._decodeStr(input, tag, options);
+  else if (tag === 'int' || tag === 'enum')
+    return this._decodeInt(input, state.args && state.args[0], options);
 
-  var x2 = point.x.redSqr();
-  var y2 = point.y.redSqr();
-  var lhs = x2.redMul(this.a).redAdd(y2);
-  var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2)));
+  if (state.use !== null) {
+    return this._getUse(state.use, input._reporterState.obj)
+        ._decode(input, options);
+  } else {
+    return input.error('unknown tag: ' + tag);
+  }
+};
 
-  return lhs.cmp(rhs) === 0;
+Node.prototype._getUse = function _getUse(entity, obj) {
+
+  var state = this._baseState;
+  // Create altered use decoder if implicit is set
+  state.useDecoder = this._use(entity, obj);
+  assert(state.useDecoder._baseState.parent === null);
+  state.useDecoder = state.useDecoder._baseState.children[0];
+  if (state.implicit !== state.useDecoder._baseState.implicit) {
+    state.useDecoder = state.useDecoder.clone();
+    state.useDecoder._baseState.implicit = state.implicit;
+  }
+  return state.useDecoder;
 };
 
-function Point(curve, x, y, z, t) {
-  Base.BasePoint.call(this, curve, 'projective');
-  if (x === null && y === null && z === null) {
-    this.x = this.curve.zero;
-    this.y = this.curve.one;
-    this.z = this.curve.one;
-    this.t = this.curve.zero;
-    this.zOne = true;
-  } else {
-    this.x = new BN(x, 16);
-    this.y = new BN(y, 16);
-    this.z = z ? new BN(z, 16) : this.curve.one;
-    this.t = t && new BN(t, 16);
-    if (!this.x.red)
-      this.x = this.x.toRed(this.curve.red);
-    if (!this.y.red)
-      this.y = this.y.toRed(this.curve.red);
-    if (!this.z.red)
-      this.z = this.z.toRed(this.curve.red);
-    if (this.t && !this.t.red)
-      this.t = this.t.toRed(this.curve.red);
-    this.zOne = this.z === this.curve.one;
+Node.prototype._decodeChoice = function decodeChoice(input, options) {
+  var state = this._baseState;
+  var result = null;
+  var match = false;
 
-    // Use extended coordinates
-    if (this.curve.extended && !this.t) {
-      this.t = this.x.redMul(this.y);
-      if (!this.zOne)
-        this.t = this.t.redMul(this.z.redInvm());
+  Object.keys(state.choice).some(function(key) {
+    var save = input.save();
+    var node = state.choice[key];
+    try {
+      var value = node._decode(input, options);
+      if (input.isError(value))
+        return false;
+
+      result = { type: key, value: value };
+      match = true;
+    } catch (e) {
+      input.restore(save);
+      return false;
     }
-  }
-}
-inherits(Point, Base.BasePoint);
+    return true;
+  }, this);
 
-EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
-  return Point.fromJSON(this, obj);
-};
+  if (!match)
+    return input.error('Choice not matched');
 
-EdwardsCurve.prototype.point = function point(x, y, z, t) {
-  return new Point(this, x, y, z, t);
+  return result;
 };
 
-Point.fromJSON = function fromJSON(curve, obj) {
-  return new Point(curve, obj[0], obj[1], obj[2]);
-};
+//
+// Encoding
+//
 
-Point.prototype.inspect = function inspect() {
-  if (this.isInfinity())
-    return '<EC Point Infinity>';
-  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
-      ' y: ' + this.y.fromRed().toString(16, 2) +
-      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
+Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) {
+  return new EncoderBuffer(data, this.reporter);
 };
 
-Point.prototype.isInfinity = function isInfinity() {
-  // XXX This code assumes that zero is always zero in red
-  return this.x.cmpn(0) === 0 &&
-         this.y.cmp(this.z) === 0;
-};
+Node.prototype._encode = function encode(data, reporter, parent) {
+  var state = this._baseState;
+  if (state['default'] !== null && state['default'] === data)
+    return;
 
-Point.prototype._extDbl = function _extDbl() {
-  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
-  //     #doubling-dbl-2008-hwcd
-  // 4M + 4S
+  var result = this._encodeValue(data, reporter, parent);
+  if (result === undefined)
+    return;
 
-  // A = X1^2
-  var a = this.x.redSqr();
-  // B = Y1^2
-  var b = this.y.redSqr();
-  // C = 2 * Z1^2
-  var c = this.z.redSqr();
-  c = c.redIAdd(c);
-  // D = a * A
-  var d = this.curve._mulA(a);
-  // E = (X1 + Y1)^2 - A - B
-  var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b);
-  // G = D + B
-  var g = d.redAdd(b);
-  // F = G - C
-  var f = g.redSub(c);
-  // H = D - B
-  var h = d.redSub(b);
-  // X3 = E * F
-  var nx = e.redMul(f);
-  // Y3 = G * H
-  var ny = g.redMul(h);
-  // T3 = E * H
-  var nt = e.redMul(h);
-  // Z3 = F * G
-  var nz = f.redMul(g);
-  return this.curve.point(nx, ny, nz, nt);
+  if (this._skipDefault(result, reporter, parent))
+    return;
+
+  return result;
 };
 
-Point.prototype._projDbl = function _projDbl() {
-  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
-  //     #doubling-dbl-2008-bbjlp
-  //     #doubling-dbl-2007-bl
-  // and others
-  // Generally 3M + 4S or 2M + 4S
+Node.prototype._encodeValue = function encode(data, reporter, parent) {
+  var state = this._baseState;
 
-  // B = (X1 + Y1)^2
-  var b = this.x.redAdd(this.y).redSqr();
-  // C = X1^2
-  var c = this.x.redSqr();
-  // D = Y1^2
-  var d = this.y.redSqr();
+  // Decode root node
+  if (state.parent === null)
+    return state.children[0]._encode(data, reporter || new Reporter());
 
-  var nx;
-  var ny;
-  var nz;
-  if (this.curve.twisted) {
-    // E = a * C
-    var e = this.curve._mulA(c);
-    // F = E + D
-    var f = e.redAdd(d);
-    if (this.zOne) {
-      // X3 = (B - C - D) * (F - 2)
-      nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
-      // Y3 = F * (E - D)
-      ny = f.redMul(e.redSub(d));
-      // Z3 = F^2 - 2 * F
-      nz = f.redSqr().redSub(f).redSub(f);
+  var result = null;
+
+  // Set reporter to share it with a child class
+  this.reporter = reporter;
+
+  // Check if data is there
+  if (state.optional && data === undefined) {
+    if (state['default'] !== null)
+      data = state['default']
+    else
+      return;
+  }
+
+  // Encode children first
+  var content = null;
+  var primitive = false;
+  if (state.any) {
+    // Anything that was given is translated to buffer
+    result = this._createEncoderBuffer(data);
+  } else if (state.choice) {
+    result = this._encodeChoice(data, reporter);
+  } else if (state.contains) {
+    content = this._getUse(state.contains, parent)._encode(data, reporter);
+    primitive = true;
+  } else if (state.children) {
+    content = state.children.map(function(child) {
+      if (child._baseState.tag === 'null_')
+        return child._encode(null, reporter, data);
+
+      if (child._baseState.key === null)
+        return reporter.error('Child should have a key');
+      var prevKey = reporter.enterKey(child._baseState.key);
+
+      if (typeof data !== 'object')
+        return reporter.error('Child expected, but input is not object');
+
+      var res = child._encode(data[child._baseState.key], reporter, data);
+      reporter.leaveKey(prevKey);
+
+      return res;
+    }, this).filter(function(child) {
+      return child;
+    });
+    content = this._createEncoderBuffer(content);
+  } else {
+    if (state.tag === 'seqof' || state.tag === 'setof') {
+      // TODO(indutny): this should be thrown on DSL level
+      if (!(state.args && state.args.length === 1))
+        return reporter.error('Too many args for : ' + state.tag);
+
+      if (!Array.isArray(data))
+        return reporter.error('seqof/setof, but data is not Array');
+
+      var child = this.clone();
+      child._baseState.implicit = null;
+      content = this._createEncoderBuffer(data.map(function(item) {
+        var state = this._baseState;
+
+        return this._getUse(state.args[0], data)._encode(item, reporter);
+      }, child));
+    } else if (state.use !== null) {
+      result = this._getUse(state.use, parent)._encode(data, reporter);
     } else {
-      // H = Z1^2
-      var h = this.z.redSqr();
-      // J = F - 2 * H
-      var j = f.redSub(h).redISub(h);
-      // X3 = (B-C-D)*J
-      nx = b.redSub(c).redISub(d).redMul(j);
-      // Y3 = F * (E - D)
-      ny = f.redMul(e.redSub(d));
-      // Z3 = F * J
-      nz = f.redMul(j);
+      content = this._encodePrimitive(state.tag, data);
+      primitive = true;
     }
-  } else {
-    // E = C + D
-    var e = c.redAdd(d);
-    // H = (c * Z1)^2
-    var h = this.curve._mulC(this.c.redMul(this.z)).redSqr();
-    // J = E - 2 * H
-    var j = e.redSub(h).redSub(h);
-    // X3 = c * (B - E) * J
-    nx = this.curve._mulC(b.redISub(e)).redMul(j);
-    // Y3 = c * E * (C - D)
-    ny = this.curve._mulC(e).redMul(c.redISub(d));
-    // Z3 = E * J
-    nz = e.redMul(j);
   }
-  return this.curve.point(nx, ny, nz);
-};
 
-Point.prototype.dbl = function dbl() {
-  if (this.isInfinity())
-    return this;
+  // Encode data itself
+  var result;
+  if (!state.any && state.choice === null) {
+    var tag = state.implicit !== null ? state.implicit : state.tag;
+    var cls = state.implicit === null ? 'universal' : 'context';
 
-  // Double in extended coordinates
-  if (this.curve.extended)
-    return this._extDbl();
-  else
-    return this._projDbl();
-};
+    if (tag === null) {
+      if (state.use === null)
+        reporter.error('Tag could be ommited only for .use()');
+    } else {
+      if (state.use === null)
+        result = this._encodeComposite(tag, primitive, cls, content);
+    }
+  }
 
-Point.prototype._extAdd = function _extAdd(p) {
-  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
-  //     #addition-add-2008-hwcd-3
-  // 8M
+  // Wrap in explicit
+  if (state.explicit !== null)
+    result = this._encodeComposite(state.explicit, false, 'context', result);
 
-  // A = (Y1 - X1) * (Y2 - X2)
-  var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x));
-  // B = (Y1 + X1) * (Y2 + X2)
-  var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x));
-  // C = T1 * k * T2
-  var c = this.t.redMul(this.curve.dd).redMul(p.t);
-  // D = Z1 * 2 * Z2
-  var d = this.z.redMul(p.z.redAdd(p.z));
-  // E = B - A
-  var e = b.redSub(a);
-  // F = D - C
-  var f = d.redSub(c);
-  // G = D + C
-  var g = d.redAdd(c);
-  // H = B + A
-  var h = b.redAdd(a);
-  // X3 = E * F
-  var nx = e.redMul(f);
-  // Y3 = G * H
-  var ny = g.redMul(h);
-  // T3 = E * H
-  var nt = e.redMul(h);
-  // Z3 = F * G
-  var nz = f.redMul(g);
-  return this.curve.point(nx, ny, nz, nt);
+  return result;
 };
 
-Point.prototype._projAdd = function _projAdd(p) {
-  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
-  //     #addition-add-2008-bbjlp
-  //     #addition-add-2007-bl
-  // 10M + 1S
+Node.prototype._encodeChoice = function encodeChoice(data, reporter) {
+  var state = this._baseState;
 
-  // A = Z1 * Z2
-  var a = this.z.redMul(p.z);
-  // B = A^2
-  var b = a.redSqr();
-  // C = X1 * X2
-  var c = this.x.redMul(p.x);
-  // D = Y1 * Y2
-  var d = this.y.redMul(p.y);
-  // E = d * C * D
-  var e = this.curve.d.redMul(c).redMul(d);
-  // F = B - E
-  var f = b.redSub(e);
-  // G = B + E
-  var g = b.redAdd(e);
-  // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D)
-  var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d);
-  var nx = a.redMul(f).redMul(tmp);
-  var ny;
-  var nz;
-  if (this.curve.twisted) {
-    // Y3 = A * G * (D - a * C)
-    ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
-    // Z3 = F * G
-    nz = f.redMul(g);
-  } else {
-    // Y3 = A * G * (D - C)
-    ny = a.redMul(g).redMul(d.redSub(c));
-    // Z3 = c * F * G
-    nz = this.curve._mulC(f).redMul(g);
+  var node = state.choice[data.type];
+  if (!node) {
+    assert(
+        false,
+        data.type + ' not found in ' +
+            JSON.stringify(Object.keys(state.choice)));
   }
-  return this.curve.point(nx, ny, nz);
+  return node._encode(data.value, reporter);
 };
 
-Point.prototype.add = function add(p) {
-  if (this.isInfinity())
-    return p;
-  if (p.isInfinity())
-    return this;
+Node.prototype._encodePrimitive = function encodePrimitive(tag, data) {
+  var state = this._baseState;
 
-  if (this.curve.extended)
-    return this._extAdd(p);
+  if (/str$/.test(tag))
+    return this._encodeStr(data, tag);
+  else if (tag === 'objid' && state.args)
+    return this._encodeObjid(data, state.reverseArgs[0], state.args[1]);
+  else if (tag === 'objid')
+    return this._encodeObjid(data, null, null);
+  else if (tag === 'gentime' || tag === 'utctime')
+    return this._encodeTime(data, tag);
+  else if (tag === 'null_')
+    return this._encodeNull();
+  else if (tag === 'int' || tag === 'enum')
+    return this._encodeInt(data, state.args && state.reverseArgs[0]);
+  else if (tag === 'bool')
+    return this._encodeBool(data);
+  else if (tag === 'objDesc')
+    return this._encodeStr(data, tag);
   else
-    return this._projAdd(p);
+    throw new Error('Unsupported tag: ' + tag);
 };
 
-Point.prototype.mul = function mul(k) {
-  if (this._hasDoubles(k))
-    return this.curve._fixedNafMul(this, k);
-  else
-    return this.curve._wnafMul(this, k);
+Node.prototype._isNumstr = function isNumstr(str) {
+  return /^[0-9 ]*$/.test(str);
 };
 
-Point.prototype.mulAdd = function mulAdd(k1, p, k2) {
-  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false);
+Node.prototype._isPrintstr = function isPrintstr(str) {
+  return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str);
 };
 
-Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) {
-  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true);
-};
+},{"../base":4,"minimalistic-assert":99}],6:[function(require,module,exports){
+var inherits = require('inherits');
 
-Point.prototype.normalize = function normalize() {
-  if (this.zOne)
-    return this;
+function Reporter(options) {
+  this._reporterState = {
+    obj: null,
+    path: [],
+    options: options || {},
+    errors: []
+  };
+}
+exports.Reporter = Reporter;
 
-  // Normalize coordinates
-  var zi = this.z.redInvm();
-  this.x = this.x.redMul(zi);
-  this.y = this.y.redMul(zi);
-  if (this.t)
-    this.t = this.t.redMul(zi);
-  this.z = this.curve.one;
-  this.zOne = true;
-  return this;
+Reporter.prototype.isError = function isError(obj) {
+  return obj instanceof ReporterError;
 };
 
-Point.prototype.neg = function neg() {
-  return this.curve.point(this.x.redNeg(),
-                          this.y,
-                          this.z,
-                          this.t && this.t.redNeg());
-};
+Reporter.prototype.save = function save() {
+  var state = this._reporterState;
 
-Point.prototype.getX = function getX() {
-  this.normalize();
-  return this.x.fromRed();
+  return { obj: state.obj, pathLen: state.path.length };
 };
 
-Point.prototype.getY = function getY() {
-  this.normalize();
-  return this.y.fromRed();
+Reporter.prototype.restore = function restore(data) {
+  var state = this._reporterState;
+
+  state.obj = data.obj;
+  state.path = state.path.slice(0, data.pathLen);
 };
 
-Point.prototype.eq = function eq(other) {
-  return this === other ||
-         this.getX().cmp(other.getX()) === 0 &&
-         this.getY().cmp(other.getY()) === 0;
+Reporter.prototype.enterKey = function enterKey(key) {
+  return this._reporterState.path.push(key);
 };
 
-Point.prototype.eqXToP = function eqXToP(x) {
-  var rx = x.toRed(this.curve.red).redMul(this.z);
-  if (this.x.cmp(rx) === 0)
-    return true;
+Reporter.prototype.exitKey = function exitKey(index) {
+  var state = this._reporterState;
 
-  var xc = x.clone();
-  var t = this.curve.redN.redMul(this.z);
-  for (;;) {
-    xc.iadd(this.curve.n);
-    if (xc.cmp(this.curve.p) >= 0)
-      return false;
-
-    rx.redIAdd(t);
-    if (this.x.cmp(rx) === 0)
-      return true;
-  }
-  return false;
+  state.path = state.path.slice(0, index - 1);
 };
 
-// Compatibility with BaseCurve
-Point.prototype.toP = Point.prototype.normalize;
-Point.prototype.mixedAdd = Point.prototype.add;
-
-},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],100:[function(require,module,exports){
-'use strict';
-
-var curve = exports;
-
-curve.base = require('./base');
-curve.short = require('./short');
-curve.mont = require('./mont');
-curve.edwards = require('./edwards');
-
-},{"./base":98,"./edwards":99,"./mont":101,"./short":102}],101:[function(require,module,exports){
-'use strict';
+Reporter.prototype.leaveKey = function leaveKey(index, key, value) {
+  var state = this._reporterState;
 
-var curve = require('../curve');
-var BN = require('bn.js');
-var inherits = require('inherits');
-var Base = curve.base;
+  this.exitKey(index);
+  if (state.obj !== null)
+    state.obj[key] = value;
+};
 
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
+Reporter.prototype.path = function path() {
+  return this._reporterState.path.join('/');
+};
 
-function MontCurve(conf) {
-  Base.call(this, 'mont', conf);
+Reporter.prototype.enterObject = function enterObject() {
+  var state = this._reporterState;
 
-  this.a = new BN(conf.a, 16).toRed(this.red);
-  this.b = new BN(conf.b, 16).toRed(this.red);
-  this.i4 = new BN(4).toRed(this.red).redInvm();
-  this.two = new BN(2).toRed(this.red);
-  this.a24 = this.i4.redMul(this.a.redAdd(this.two));
-}
-inherits(MontCurve, Base);
-module.exports = MontCurve;
+  var prev = state.obj;
+  state.obj = {};
+  return prev;
+};
 
-MontCurve.prototype.validate = function validate(point) {
-  var x = point.normalize().x;
-  var x2 = x.redSqr();
-  var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x);
-  var y = rhs.redSqrt();
+Reporter.prototype.leaveObject = function leaveObject(prev) {
+  var state = this._reporterState;
 
-  return y.redSqr().cmp(rhs) === 0;
+  var now = state.obj;
+  state.obj = prev;
+  return now;
 };
 
-function Point(curve, x, z) {
-  Base.BasePoint.call(this, curve, 'projective');
-  if (x === null && z === null) {
-    this.x = this.curve.one;
-    this.z = this.curve.zero;
+Reporter.prototype.error = function error(msg) {
+  var err;
+  var state = this._reporterState;
+
+  var inherited = msg instanceof ReporterError;
+  if (inherited) {
+    err = msg;
   } else {
-    this.x = new BN(x, 16);
-    this.z = new BN(z, 16);
-    if (!this.x.red)
-      this.x = this.x.toRed(this.curve.red);
-    if (!this.z.red)
-      this.z = this.z.toRed(this.curve.red);
+    err = new ReporterError(state.path.map(function(elem) {
+      return '[' + JSON.stringify(elem) + ']';
+    }).join(''), msg.message || msg, msg.stack);
   }
-}
-inherits(Point, Base.BasePoint);
 
-MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
-  return this.point(utils.toArray(bytes, enc), 1);
-};
+  if (!state.options.partial)
+    throw err;
 
-MontCurve.prototype.point = function point(x, z) {
-  return new Point(this, x, z);
-};
+  if (!inherited)
+    state.errors.push(err);
 
-MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
-  return Point.fromJSON(this, obj);
+  return err;
 };
 
-Point.prototype.precompute = function precompute() {
-  // No-op
-};
+Reporter.prototype.wrapResult = function wrapResult(result) {
+  var state = this._reporterState;
+  if (!state.options.partial)
+    return result;
 
-Point.prototype._encode = function _encode() {
-  return this.getX().toArray('be', this.curve.p.byteLength());
+  return {
+    result: this.isError(result) ? null : result,
+    errors: state.errors
+  };
 };
 
-Point.fromJSON = function fromJSON(curve, obj) {
-  return new Point(curve, obj[0], obj[1] || curve.one);
+function ReporterError(path, msg) {
+  this.path = path;
+  this.rethrow(msg);
 };
+inherits(ReporterError, Error);
 
-Point.prototype.inspect = function inspect() {
-  if (this.isInfinity())
-    return '<EC Point Infinity>';
-  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
-      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
-};
+ReporterError.prototype.rethrow = function rethrow(msg) {
+  this.message = msg + ' at: ' + (this.path || '(shallow)');
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, ReporterError);
 
-Point.prototype.isInfinity = function isInfinity() {
-  // XXX This code assumes that zero is always zero in red
-  return this.z.cmpn(0) === 0;
+  if (!this.stack) {
+    try {
+      // IE only adds stack when thrown
+      throw new Error(this.message);
+    } catch (e) {
+      this.stack = e.stack;
+    }
+  }
+  return this;
 };
 
-Point.prototype.dbl = function dbl() {
-  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3
-  // 2M + 2S + 4A
+},{"inherits":95}],7:[function(require,module,exports){
+var constants = require('../constants');
 
-  // A = X1 + Z1
-  var a = this.x.redAdd(this.z);
-  // AA = A^2
-  var aa = a.redSqr();
-  // B = X1 - Z1
-  var b = this.x.redSub(this.z);
-  // BB = B^2
-  var bb = b.redSqr();
-  // C = AA - BB
-  var c = aa.redSub(bb);
-  // X3 = AA * BB
-  var nx = aa.redMul(bb);
-  // Z3 = C * (BB + A24 * C)
-  var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c)));
-  return this.curve.point(nx, nz);
+exports.tagClass = {
+  0: 'universal',
+  1: 'application',
+  2: 'context',
+  3: 'private'
 };
+exports.tagClassByName = constants._reverse(exports.tagClass);
 
-Point.prototype.add = function add() {
-  throw new Error('Not supported on Montgomery curve');
+exports.tag = {
+  0x00: 'end',
+  0x01: 'bool',
+  0x02: 'int',
+  0x03: 'bitstr',
+  0x04: 'octstr',
+  0x05: 'null_',
+  0x06: 'objid',
+  0x07: 'objDesc',
+  0x08: 'external',
+  0x09: 'real',
+  0x0a: 'enum',
+  0x0b: 'embed',
+  0x0c: 'utf8str',
+  0x0d: 'relativeOid',
+  0x10: 'seq',
+  0x11: 'set',
+  0x12: 'numstr',
+  0x13: 'printstr',
+  0x14: 't61str',
+  0x15: 'videostr',
+  0x16: 'ia5str',
+  0x17: 'utctime',
+  0x18: 'gentime',
+  0x19: 'graphstr',
+  0x1a: 'iso646str',
+  0x1b: 'genstr',
+  0x1c: 'unistr',
+  0x1d: 'charstr',
+  0x1e: 'bmpstr'
 };
+exports.tagByName = constants._reverse(exports.tag);
 
-Point.prototype.diffAdd = function diffAdd(p, diff) {
-  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3
-  // 4M + 2S + 6A
+},{"../constants":8}],8:[function(require,module,exports){
+var constants = exports;
 
-  // A = X2 + Z2
-  var a = this.x.redAdd(this.z);
-  // B = X2 - Z2
-  var b = this.x.redSub(this.z);
-  // C = X3 + Z3
-  var c = p.x.redAdd(p.z);
-  // D = X3 - Z3
-  var d = p.x.redSub(p.z);
-  // DA = D * A
-  var da = d.redMul(a);
-  // CB = C * B
-  var cb = c.redMul(b);
-  // X5 = Z1 * (DA + CB)^2
-  var nx = diff.z.redMul(da.redAdd(cb).redSqr());
-  // Z5 = X1 * (DA - CB)^2
-  var nz = diff.x.redMul(da.redISub(cb).redSqr());
-  return this.curve.point(nx, nz);
-};
+// Helper
+constants._reverse = function reverse(map) {
+  var res = {};
 
-Point.prototype.mul = function mul(k) {
-  var t = k.clone();
-  var a = this; // (N / 2) * Q + Q
-  var b = this.curve.point(null, null); // (N / 2) * Q
-  var c = this; // Q
+  Object.keys(map).forEach(function(key) {
+    // Convert key to integer if it is stringified
+    if ((key | 0) == key)
+      key = key | 0;
 
-  for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1))
-    bits.push(t.andln(1));
+    var value = map[key];
+    res[value] = key;
+  });
 
-  for (var i = bits.length - 1; i >= 0; i--) {
-    if (bits[i] === 0) {
-      // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q
-      a = a.diffAdd(b, c);
-      // N * Q = 2 * ((N / 2) * Q + Q))
-      b = b.dbl();
-    } else {
-      // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q)
-      b = a.diffAdd(b, c);
-      // N * Q + Q = 2 * ((N / 2) * Q + Q)
-      a = a.dbl();
-    }
-  }
-  return b;
+  return res;
 };
 
-Point.prototype.mulAdd = function mulAdd() {
-  throw new Error('Not supported on Montgomery curve');
-};
+constants.der = require('./der');
 
-Point.prototype.jumlAdd = function jumlAdd() {
-  throw new Error('Not supported on Montgomery curve');
-};
+},{"./der":7}],9:[function(require,module,exports){
+var inherits = require('inherits');
 
-Point.prototype.eq = function eq(other) {
-  return this.getX().cmp(other.getX()) === 0;
-};
+var asn1 = require('../../asn1');
+var base = asn1.base;
+var bignum = asn1.bignum;
 
-Point.prototype.normalize = function normalize() {
-  this.x = this.x.redMul(this.z.redInvm());
-  this.z = this.curve.one;
-  return this;
+// Import DER constants
+var der = asn1.constants.der;
+
+function DERDecoder(entity) {
+  this.enc = 'der';
+  this.name = entity.name;
+  this.entity = entity;
+
+  // Construct base tree
+  this.tree = new DERNode();
+  this.tree._init(entity.body);
 };
+module.exports = DERDecoder;
 
-Point.prototype.getX = function getX() {
-  // Normalize coordinates
-  this.normalize();
+DERDecoder.prototype.decode = function decode(data, options) {
+  if (!(data instanceof base.DecoderBuffer))
+    data = new base.DecoderBuffer(data, options);
 
-  return this.x.fromRed();
+  return this.tree._decode(data, options);
 };
 
-},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],102:[function(require,module,exports){
-'use strict';
+// Tree methods
 
-var curve = require('../curve');
-var elliptic = require('../../elliptic');
-var BN = require('bn.js');
-var inherits = require('inherits');
-var Base = curve.base;
+function DERNode(parent) {
+  base.Node.call(this, 'der', parent);
+}
+inherits(DERNode, base.Node);
 
-var assert = elliptic.utils.assert;
+DERNode.prototype._peekTag = function peekTag(buffer, tag, any) {
+  if (buffer.isEmpty())
+    return false;
 
-function ShortCurve(conf) {
-  Base.call(this, 'short', conf);
+  var state = buffer.save();
+  var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"');
+  if (buffer.isError(decodedTag))
+    return decodedTag;
 
-  this.a = new BN(conf.a, 16).toRed(this.red);
-  this.b = new BN(conf.b, 16).toRed(this.red);
-  this.tinv = this.two.redInvm();
+  buffer.restore(state);
 
-  this.zeroA = this.a.fromRed().cmpn(0) === 0;
-  this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0;
+  return decodedTag.tag === tag || decodedTag.tagStr === tag ||
+    (decodedTag.tagStr + 'of') === tag || any;
+};
 
-  // If the curve is endomorphic, precalculate beta and lambda
-  this.endo = this._getEndomorphism(conf);
-  this._endoWnafT1 = new Array(4);
-  this._endoWnafT2 = new Array(4);
-}
-inherits(ShortCurve, Base);
-module.exports = ShortCurve;
+DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) {
+  var decodedTag = derDecodeTag(buffer,
+                                'Failed to decode tag of "' + tag + '"');
+  if (buffer.isError(decodedTag))
+    return decodedTag;
 
-ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) {
-  // No efficient endomorphism
-  if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1)
-    return;
+  var len = derDecodeLen(buffer,
+                         decodedTag.primitive,
+                         'Failed to get length of "' + tag + '"');
 
-  // Compute beta and lambda, that lambda * P = (beta * Px; Py)
-  var beta;
-  var lambda;
-  if (conf.beta) {
-    beta = new BN(conf.beta, 16).toRed(this.red);
-  } else {
-    var betas = this._getEndoRoots(this.p);
-    // Choose the smallest beta
-    beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1];
-    beta = beta.toRed(this.red);
-  }
-  if (conf.lambda) {
-    lambda = new BN(conf.lambda, 16);
-  } else {
-    // Choose the lambda that is matching selected beta
-    var lambdas = this._getEndoRoots(this.n);
-    if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) {
-      lambda = lambdas[0];
-    } else {
-      lambda = lambdas[1];
-      assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0);
-    }
-  }
+  // Failure
+  if (buffer.isError(len))
+    return len;
 
-  // Get basis vectors, used for balanced length-two representation
-  var basis;
-  if (conf.basis) {
-    basis = conf.basis.map(function(vec) {
-      return {
-        a: new BN(vec.a, 16),
-        b: new BN(vec.b, 16)
-      };
-    });
-  } else {
-    basis = this._getEndoBasis(lambda);
+  if (!any &&
+      decodedTag.tag !== tag &&
+      decodedTag.tagStr !== tag &&
+      decodedTag.tagStr + 'of' !== tag) {
+    return buffer.error('Failed to match tag: "' + tag + '"');
   }
 
-  return {
-    beta: beta,
-    lambda: lambda,
-    basis: basis
-  };
-};
-
-ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) {
-  // Find roots of for x^2 + x + 1 in F
-  // Root = (-1 +- Sqrt(-3)) / 2
-  //
-  var red = num === this.p ? this.red : BN.mont(num);
-  var tinv = new BN(2).toRed(red).redInvm();
-  var ntinv = tinv.redNeg();
+  if (decodedTag.primitive || len !== null)
+    return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
 
-  var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv);
+  // Indefinite length... find END tag
+  var state = buffer.save();
+  var res = this._skipUntilEnd(
+      buffer,
+      'Failed to skip indefinite length body: "' + this.tag + '"');
+  if (buffer.isError(res))
+    return res;
 
-  var l1 = ntinv.redAdd(s).fromRed();
-  var l2 = ntinv.redSub(s).fromRed();
-  return [ l1, l2 ];
+  len = buffer.offset - state.offset;
+  buffer.restore(state);
+  return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
 };
 
-ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) {
-  // aprxSqrt >= sqrt(this.n)
-  var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2));
-
-  // 3.74
-  // Run EGCD, until r(L + 1) < aprxSqrt
-  var u = lambda;
-  var v = this.n.clone();
-  var x1 = new BN(1);
-  var y1 = new BN(0);
-  var x2 = new BN(0);
-  var y2 = new BN(1);
+DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) {
+  while (true) {
+    var tag = derDecodeTag(buffer, fail);
+    if (buffer.isError(tag))
+      return tag;
+    var len = derDecodeLen(buffer, tag.primitive, fail);
+    if (buffer.isError(len))
+      return len;
 
-  // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n)
-  var a0;
-  var b0;
-  // First vector
-  var a1;
-  var b1;
-  // Second vector
-  var a2;
-  var b2;
+    var res;
+    if (tag.primitive || len !== null)
+      res = buffer.skip(len)
+    else
+      res = this._skipUntilEnd(buffer, fail);
 
-  var prevR;
-  var i = 0;
-  var r;
-  var x;
-  while (u.cmpn(0) !== 0) {
-    var q = v.div(u);
-    r = v.sub(q.mul(u));
-    x = x2.sub(q.mul(x1));
-    var y = y2.sub(q.mul(y1));
+    // Failure
+    if (buffer.isError(res))
+      return res;
 
-    if (!a1 && r.cmp(aprxSqrt) < 0) {
-      a0 = prevR.neg();
-      b0 = x1;
-      a1 = r.neg();
-      b1 = x;
-    } else if (a1 && ++i === 2) {
+    if (tag.tagStr === 'end')
       break;
-    }
-    prevR = r;
-
-    v = u;
-    u = r;
-    x2 = x1;
-    x1 = x;
-    y2 = y1;
-    y1 = y;
   }
-  a2 = r.neg();
-  b2 = x;
+};
 
-  var len1 = a1.sqr().add(b1.sqr());
-  var len2 = a2.sqr().add(b2.sqr());
-  if (len2.cmp(len1) >= 0) {
-    a2 = a0;
-    b2 = b0;
-  }
+DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder,
+                                                    options) {
+  var result = [];
+  while (!buffer.isEmpty()) {
+    var possibleEnd = this._peekTag(buffer, 'end');
+    if (buffer.isError(possibleEnd))
+      return possibleEnd;
 
-  // Normalize signs
-  if (a1.negative) {
-    a1 = a1.neg();
-    b1 = b1.neg();
-  }
-  if (a2.negative) {
-    a2 = a2.neg();
-    b2 = b2.neg();
+    var res = decoder.decode(buffer, 'der', options);
+    if (buffer.isError(res) && possibleEnd)
+      break;
+    result.push(res);
   }
+  return result;
+};
 
-  return [
-    { a: a1, b: b1 },
-    { a: a2, b: b2 }
-  ];
+DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
+  if (tag === 'bitstr') {
+    var unused = buffer.readUInt8();
+    if (buffer.isError(unused))
+      return unused;
+    return { unused: unused, data: buffer.raw() };
+  } else if (tag === 'bmpstr') {
+    var raw = buffer.raw();
+    if (raw.length % 2 === 1)
+      return buffer.error('Decoding of string type: bmpstr length mismatch');
+
+    var str = '';
+    for (var i = 0; i < raw.length / 2; i++) {
+      str += String.fromCharCode(raw.readUInt16BE(i * 2));
+    }
+    return str;
+  } else if (tag === 'numstr') {
+    var numstr = buffer.raw().toString('ascii');
+    if (!this._isNumstr(numstr)) {
+      return buffer.error('Decoding of string type: ' +
+                          'numstr unsupported characters');
+    }
+    return numstr;
+  } else if (tag === 'octstr') {
+    return buffer.raw();
+  } else if (tag === 'objDesc') {
+    return buffer.raw();
+  } else if (tag === 'printstr') {
+    var printstr = buffer.raw().toString('ascii');
+    if (!this._isPrintstr(printstr)) {
+      return buffer.error('Decoding of string type: ' +
+                          'printstr unsupported characters');
+    }
+    return printstr;
+  } else if (/str$/.test(tag)) {
+    return buffer.raw().toString();
+  } else {
+    return buffer.error('Decoding of string type: ' + tag + ' unsupported');
+  }
 };
 
-ShortCurve.prototype._endoSplit = function _endoSplit(k) {
-  var basis = this.endo.basis;
-  var v1 = basis[0];
-  var v2 = basis[1];
+DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
+  var result;
+  var identifiers = [];
+  var ident = 0;
+  while (!buffer.isEmpty()) {
+    var subident = buffer.readUInt8();
+    ident <<= 7;
+    ident |= subident & 0x7f;
+    if ((subident & 0x80) === 0) {
+      identifiers.push(ident);
+      ident = 0;
+    }
+  }
+  if (subident & 0x80)
+    identifiers.push(ident);
 
-  var c1 = v2.b.mul(k).divRound(this.n);
-  var c2 = v1.b.neg().mul(k).divRound(this.n);
+  var first = (identifiers[0] / 40) | 0;
+  var second = identifiers[0] % 40;
 
-  var p1 = c1.mul(v1.a);
-  var p2 = c2.mul(v2.a);
-  var q1 = c1.mul(v1.b);
-  var q2 = c2.mul(v2.b);
+  if (relative)
+    result = identifiers;
+  else
+    result = [first, second].concat(identifiers.slice(1));
 
-  // Calculate answer
-  var k1 = k.sub(p1).sub(p2);
-  var k2 = q1.add(q2).neg();
-  return { k1: k1, k2: k2 };
+  if (values) {
+    var tmp = values[result.join(' ')];
+    if (tmp === undefined)
+      tmp = values[result.join('.')];
+    if (tmp !== undefined)
+      result = tmp;
+  }
+
+  return result;
 };
 
-ShortCurve.prototype.pointFromX = function pointFromX(x, odd) {
-  x = new BN(x, 16);
-  if (!x.red)
-    x = x.toRed(this.red);
+DERNode.prototype._decodeTime = function decodeTime(buffer, tag) {
+  var str = buffer.raw().toString();
+  if (tag === 'gentime') {
+    var year = str.slice(0, 4) | 0;
+    var mon = str.slice(4, 6) | 0;
+    var day = str.slice(6, 8) | 0;
+    var hour = str.slice(8, 10) | 0;
+    var min = str.slice(10, 12) | 0;
+    var sec = str.slice(12, 14) | 0;
+  } else if (tag === 'utctime') {
+    var year = str.slice(0, 2) | 0;
+    var mon = str.slice(2, 4) | 0;
+    var day = str.slice(4, 6) | 0;
+    var hour = str.slice(6, 8) | 0;
+    var min = str.slice(8, 10) | 0;
+    var sec = str.slice(10, 12) | 0;
+    if (year < 70)
+      year = 2000 + year;
+    else
+      year = 1900 + year;
+  } else {
+    return buffer.error('Decoding ' + tag + ' time is not supported yet');
+  }
 
-  var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b);
-  var y = y2.redSqrt();
-  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
-    throw new Error('invalid point');
+  return Date.UTC(year, mon - 1, day, hour, min, sec, 0);
+};
 
-  // XXX Is there any way to tell if the number is odd without converting it
-  // to non-red form?
-  var isOdd = y.fromRed().isOdd();
-  if (odd && !isOdd || !odd && isOdd)
-    y = y.redNeg();
+DERNode.prototype._decodeNull = function decodeNull(buffer) {
+  return null;
+};
 
-  return this.point(x, y);
+DERNode.prototype._decodeBool = function decodeBool(buffer) {
+  var res = buffer.readUInt8();
+  if (buffer.isError(res))
+    return res;
+  else
+    return res !== 0;
 };
 
-ShortCurve.prototype.validate = function validate(point) {
-  if (point.inf)
-    return true;
+DERNode.prototype._decodeInt = function decodeInt(buffer, values) {
+  // Bigint, return as it is (assume big endian)
+  var raw = buffer.raw();
+  var res = new bignum(raw);
 
-  var x = point.x;
-  var y = point.y;
+  if (values)
+    res = values[res.toString(10)] || res;
 
-  var ax = this.a.redMul(x);
-  var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b);
-  return y.redSqr().redISub(rhs).cmpn(0) === 0;
+  return res;
 };
 
-ShortCurve.prototype._endoWnafMulAdd =
-    function _endoWnafMulAdd(points, coeffs, jacobianResult) {
-  var npoints = this._endoWnafT1;
-  var ncoeffs = this._endoWnafT2;
-  for (var i = 0; i < points.length; i++) {
-    var split = this._endoSplit(coeffs[i]);
-    var p = points[i];
-    var beta = p._getBeta();
+DERNode.prototype._use = function use(entity, obj) {
+  if (typeof entity === 'function')
+    entity = entity(obj);
+  return entity._getDecoder('der').tree;
+};
 
-    if (split.k1.negative) {
-      split.k1.ineg();
-      p = p.neg(true);
-    }
-    if (split.k2.negative) {
-      split.k2.ineg();
-      beta = beta.neg(true);
-    }
+// Utility methods
 
-    npoints[i * 2] = p;
-    npoints[i * 2 + 1] = beta;
-    ncoeffs[i * 2] = split.k1;
-    ncoeffs[i * 2 + 1] = split.k2;
-  }
-  var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult);
+function derDecodeTag(buf, fail) {
+  var tag = buf.readUInt8(fail);
+  if (buf.isError(tag))
+    return tag;
 
-  // Clean-up references to points and coefficients
-  for (var j = 0; j < i * 2; j++) {
-    npoints[j] = null;
-    ncoeffs[j] = null;
-  }
-  return res;
-};
+  var cls = der.tagClass[tag >> 6];
+  var primitive = (tag & 0x20) === 0;
 
-function Point(curve, x, y, isRed) {
-  Base.BasePoint.call(this, curve, 'affine');
-  if (x === null && y === null) {
-    this.x = null;
-    this.y = null;
-    this.inf = true;
-  } else {
-    this.x = new BN(x, 16);
-    this.y = new BN(y, 16);
-    // Force redgomery representation when loading from JSON
-    if (isRed) {
-      this.x.forceRed(this.curve.red);
-      this.y.forceRed(this.curve.red);
+  // Multi-octet tag - load
+  if ((tag & 0x1f) === 0x1f) {
+    var oct = tag;
+    tag = 0;
+    while ((oct & 0x80) === 0x80) {
+      oct = buf.readUInt8(fail);
+      if (buf.isError(oct))
+        return oct;
+
+      tag <<= 7;
+      tag |= oct & 0x7f;
     }
-    if (!this.x.red)
-      this.x = this.x.toRed(this.curve.red);
-    if (!this.y.red)
-      this.y = this.y.toRed(this.curve.red);
-    this.inf = false;
+  } else {
+    tag &= 0x1f;
   }
+  var tagStr = der.tag[tag];
+
+  return {
+    cls: cls,
+    primitive: primitive,
+    tag: tag,
+    tagStr: tagStr
+  };
 }
-inherits(Point, Base.BasePoint);
 
-ShortCurve.prototype.point = function point(x, y, isRed) {
-  return new Point(this, x, y, isRed);
-};
+function derDecodeLen(buf, primitive, fail) {
+  var len = buf.readUInt8(fail);
+  if (buf.isError(len))
+    return len;
 
-ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
-  return Point.fromJSON(this, obj, red);
-};
+  // Indefinite form
+  if (!primitive && len === 0x80)
+    return null;
 
-Point.prototype._getBeta = function _getBeta() {
-  if (!this.curve.endo)
-    return;
+  // Definite form
+  if ((len & 0x80) === 0) {
+    // Short form
+    return len;
+  }
 
-  var pre = this.precomputed;
-  if (pre && pre.beta)
-    return pre.beta;
+  // Long form
+  var num = len & 0x7f;
+  if (num > 4)
+    return buf.error('length octect is too long');
 
-  var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y);
-  if (pre) {
-    var curve = this.curve;
-    var endoMul = function(p) {
-      return curve.point(p.x.redMul(curve.endo.beta), p.y);
-    };
-    pre.beta = beta;
-    beta.precomputed = {
-      beta: null,
-      naf: pre.naf && {
-        wnd: pre.naf.wnd,
-        points: pre.naf.points.map(endoMul)
-      },
-      doubles: pre.doubles && {
-        step: pre.doubles.step,
-        points: pre.doubles.points.map(endoMul)
-      }
-    };
+  len = 0;
+  for (var i = 0; i < num; i++) {
+    len <<= 8;
+    var j = buf.readUInt8(fail);
+    if (buf.isError(j))
+      return j;
+    len |= j;
   }
-  return beta;
-};
 
-Point.prototype.toJSON = function toJSON() {
-  if (!this.precomputed)
-    return [ this.x, this.y ];
+  return len;
+}
 
-  return [ this.x, this.y, this.precomputed && {
-    doubles: this.precomputed.doubles && {
-      step: this.precomputed.doubles.step,
-      points: this.precomputed.doubles.points.slice(1)
-    },
-    naf: this.precomputed.naf && {
-      wnd: this.precomputed.naf.wnd,
-      points: this.precomputed.naf.points.slice(1)
-    }
-  } ];
-};
+},{"../../asn1":1,"inherits":95}],10:[function(require,module,exports){
+var decoders = exports;
 
-Point.fromJSON = function fromJSON(curve, obj, red) {
-  if (typeof obj === 'string')
-    obj = JSON.parse(obj);
-  var res = curve.point(obj[0], obj[1], red);
-  if (!obj[2])
-    return res;
+decoders.der = require('./der');
+decoders.pem = require('./pem');
 
-  function obj2point(obj) {
-    return curve.point(obj[0], obj[1], red);
-  }
+},{"./der":9,"./pem":11}],11:[function(require,module,exports){
+var inherits = require('inherits');
+var Buffer = require('buffer').Buffer;
 
-  var pre = obj[2];
-  res.precomputed = {
-    beta: null,
-    doubles: pre.doubles && {
-      step: pre.doubles.step,
-      points: [ res ].concat(pre.doubles.points.map(obj2point))
-    },
-    naf: pre.naf && {
-      wnd: pre.naf.wnd,
-      points: [ res ].concat(pre.naf.points.map(obj2point))
-    }
-  };
-  return res;
-};
+var DERDecoder = require('./der');
 
-Point.prototype.inspect = function inspect() {
-  if (this.isInfinity())
-    return '<EC Point Infinity>';
-  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
-      ' y: ' + this.y.fromRed().toString(16, 2) + '>';
+function PEMDecoder(entity) {
+  DERDecoder.call(this, entity);
+  this.enc = 'pem';
 };
+inherits(PEMDecoder, DERDecoder);
+module.exports = PEMDecoder;
 
-Point.prototype.isInfinity = function isInfinity() {
-  return this.inf;
-};
+PEMDecoder.prototype.decode = function decode(data, options) {
+  var lines = data.toString().split(/[\r\n]+/g);
 
-Point.prototype.add = function add(p) {
-  // O + P = P
-  if (this.inf)
-    return p;
+  var label = options.label.toUpperCase();
 
-  // P + O = P
-  if (p.inf)
-    return this;
+  var re = /^-----(BEGIN|END) ([^-]+)-----$/;
+  var start = -1;
+  var end = -1;
+  for (var i = 0; i < lines.length; i++) {
+    var match = lines[i].match(re);
+    if (match === null)
+      continue;
 
-  // P + P = 2P
-  if (this.eq(p))
-    return this.dbl();
+    if (match[2] !== label)
+      continue;
 
-  // P + (-P) = O
-  if (this.neg().eq(p))
-    return this.curve.point(null, null);
+    if (start === -1) {
+      if (match[1] !== 'BEGIN')
+        break;
+      start = i;
+    } else {
+      if (match[1] !== 'END')
+        break;
+      end = i;
+      break;
+    }
+  }
+  if (start === -1 || end === -1)
+    throw new Error('PEM section not found for: ' + label);
 
-  // P + Q = O
-  if (this.x.cmp(p.x) === 0)
-    return this.curve.point(null, null);
+  var base64 = lines.slice(start + 1, end).join('');
+  // Remove excessive symbols
+  base64.replace(/[^a-z0-9\+\/=]+/gi, '');
 
-  var c = this.y.redSub(p.y);
-  if (c.cmpn(0) !== 0)
-    c = c.redMul(this.x.redSub(p.x).redInvm());
-  var nx = c.redSqr().redISub(this.x).redISub(p.x);
-  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
-  return this.curve.point(nx, ny);
+  var input = new Buffer(base64, 'base64');
+  return DERDecoder.prototype.decode.call(this, input, options);
 };
 
-Point.prototype.dbl = function dbl() {
-  if (this.inf)
-    return this;
+},{"./der":9,"buffer":47,"inherits":95}],12:[function(require,module,exports){
+var inherits = require('inherits');
+var Buffer = require('buffer').Buffer;
 
-  // 2P = O
-  var ys1 = this.y.redAdd(this.y);
-  if (ys1.cmpn(0) === 0)
-    return this.curve.point(null, null);
+var asn1 = require('../../asn1');
+var base = asn1.base;
 
-  var a = this.curve.a;
+// Import DER constants
+var der = asn1.constants.der;
 
-  var x2 = this.x.redSqr();
-  var dyinv = ys1.redInvm();
-  var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv);
+function DEREncoder(entity) {
+  this.enc = 'der';
+  this.name = entity.name;
+  this.entity = entity;
 
-  var nx = c.redSqr().redISub(this.x.redAdd(this.x));
-  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
-  return this.curve.point(nx, ny);
+  // Construct base tree
+  this.tree = new DERNode();
+  this.tree._init(entity.body);
 };
+module.exports = DEREncoder;
 
-Point.prototype.getX = function getX() {
-  return this.x.fromRed();
+DEREncoder.prototype.encode = function encode(data, reporter) {
+  return this.tree._encode(data, reporter).join();
 };
 
-Point.prototype.getY = function getY() {
-  return this.y.fromRed();
-};
+// Tree methods
 
-Point.prototype.mul = function mul(k) {
-  k = new BN(k, 16);
+function DERNode(parent) {
+  base.Node.call(this, 'der', parent);
+}
+inherits(DERNode, base.Node);
 
-  if (this._hasDoubles(k))
-    return this.curve._fixedNafMul(this, k);
-  else if (this.curve.endo)
-    return this.curve._endoWnafMulAdd([ this ], [ k ]);
-  else
-    return this.curve._wnafMul(this, k);
-};
+DERNode.prototype._encodeComposite = function encodeComposite(tag,
+                                                              primitive,
+                                                              cls,
+                                                              content) {
+  var encodedTag = encodeTag(tag, primitive, cls, this.reporter);
 
-Point.prototype.mulAdd = function mulAdd(k1, p2, k2) {
-  var points = [ this, p2 ];
-  var coeffs = [ k1, k2 ];
-  if (this.curve.endo)
-    return this.curve._endoWnafMulAdd(points, coeffs);
-  else
-    return this.curve._wnafMulAdd(1, points, coeffs, 2);
-};
+  // Short form
+  if (content.length < 0x80) {
+    var header = new Buffer(2);
+    header[0] = encodedTag;
+    header[1] = content.length;
+    return this._createEncoderBuffer([ header, content ]);
+  }
 
-Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) {
-  var points = [ this, p2 ];
-  var coeffs = [ k1, k2 ];
-  if (this.curve.endo)
-    return this.curve._endoWnafMulAdd(points, coeffs, true);
-  else
-    return this.curve._wnafMulAdd(1, points, coeffs, 2, true);
-};
+  // Long form
+  // Count octets required to store length
+  var lenOctets = 1;
+  for (var i = content.length; i >= 0x100; i >>= 8)
+    lenOctets++;
 
-Point.prototype.eq = function eq(p) {
-  return this === p ||
-         this.inf === p.inf &&
-             (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0);
-};
+  var header = new Buffer(1 + 1 + lenOctets);
+  header[0] = encodedTag;
+  header[1] = 0x80 | lenOctets;
 
-Point.prototype.neg = function neg(_precompute) {
-  if (this.inf)
-    return this;
+  for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8)
+    header[i] = j & 0xff;
 
-  var res = this.curve.point(this.x, this.y.redNeg());
-  if (_precompute && this.precomputed) {
-    var pre = this.precomputed;
-    var negate = function(p) {
-      return p.neg();
-    };
-    res.precomputed = {
-      naf: pre.naf && {
-        wnd: pre.naf.wnd,
-        points: pre.naf.points.map(negate)
-      },
-      doubles: pre.doubles && {
-        step: pre.doubles.step,
-        points: pre.doubles.points.map(negate)
-      }
-    };
-  }
-  return res;
+  return this._createEncoderBuffer([ header, content ]);
 };
 
-Point.prototype.toJ = function toJ() {
-  if (this.inf)
-    return this.curve.jpoint(null, null, null);
-
-  var res = this.curve.jpoint(this.x, this.y, this.curve.one);
-  return res;
+DERNode.prototype._encodeStr = function encodeStr(str, tag) {
+  if (tag === 'bitstr') {
+    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
+  } else if (tag === 'bmpstr') {
+    var buf = new Buffer(str.length * 2);
+    for (var i = 0; i < str.length; i++) {
+      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
+    }
+    return this._createEncoderBuffer(buf);
+  } else if (tag === 'numstr') {
+    if (!this._isNumstr(str)) {
+      return this.reporter.error('Encoding of string type: numstr supports ' +
+                                 'only digits and space');
+    }
+    return this._createEncoderBuffer(str);
+  } else if (tag === 'printstr') {
+    if (!this._isPrintstr(str)) {
+      return this.reporter.error('Encoding of string type: printstr supports ' +
+                                 'only latin upper and lower case letters, ' +
+                                 'digits, space, apostrophe, left and rigth ' +
+                                 'parenthesis, plus sign, comma, hyphen, ' +
+                                 'dot, slash, colon, equal sign, ' +
+                                 'question mark');
+    }
+    return this._createEncoderBuffer(str);
+  } else if (/str$/.test(tag)) {
+    return this._createEncoderBuffer(str);
+  } else if (tag === 'objDesc') {
+    return this._createEncoderBuffer(str);
+  } else {
+    return this.reporter.error('Encoding of string type: ' + tag +
+                               ' unsupported');
+  }
 };
 
-function JPoint(curve, x, y, z) {
-  Base.BasePoint.call(this, curve, 'jacobian');
-  if (x === null && y === null && z === null) {
-    this.x = this.curve.one;
-    this.y = this.curve.one;
-    this.z = new BN(0);
-  } else {
-    this.x = new BN(x, 16);
-    this.y = new BN(y, 16);
-    this.z = new BN(z, 16);
+DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
+  if (typeof id === 'string') {
+    if (!values)
+      return this.reporter.error('string objid given, but no values map found');
+    if (!values.hasOwnProperty(id))
+      return this.reporter.error('objid not found in values map');
+    id = values[id].split(/[\s\.]+/g);
+    for (var i = 0; i < id.length; i++)
+      id[i] |= 0;
+  } else if (Array.isArray(id)) {
+    id = id.slice();
+    for (var i = 0; i < id.length; i++)
+      id[i] |= 0;
   }
-  if (!this.x.red)
-    this.x = this.x.toRed(this.curve.red);
-  if (!this.y.red)
-    this.y = this.y.toRed(this.curve.red);
-  if (!this.z.red)
-    this.z = this.z.toRed(this.curve.red);
 
-  this.zOne = this.z === this.curve.one;
-}
-inherits(JPoint, Base.BasePoint);
+  if (!Array.isArray(id)) {
+    return this.reporter.error('objid() should be either array or string, ' +
+                               'got: ' + JSON.stringify(id));
+  }
 
-ShortCurve.prototype.jpoint = function jpoint(x, y, z) {
-  return new JPoint(this, x, y, z);
-};
+  if (!relative) {
+    if (id[1] >= 40)
+      return this.reporter.error('Second objid identifier OOB');
+    id.splice(0, 2, id[0] * 40 + id[1]);
+  }
 
-JPoint.prototype.toP = function toP() {
-  if (this.isInfinity())
-    return this.curve.point(null, null);
+  // Count number of octets
+  var size = 0;
+  for (var i = 0; i < id.length; i++) {
+    var ident = id[i];
+    for (size++; ident >= 0x80; ident >>= 7)
+      size++;
+  }
 
-  var zinv = this.z.redInvm();
-  var zinv2 = zinv.redSqr();
-  var ax = this.x.redMul(zinv2);
-  var ay = this.y.redMul(zinv2).redMul(zinv);
+  var objid = new Buffer(size);
+  var offset = objid.length - 1;
+  for (var i = id.length - 1; i >= 0; i--) {
+    var ident = id[i];
+    objid[offset--] = ident & 0x7f;
+    while ((ident >>= 7) > 0)
+      objid[offset--] = 0x80 | (ident & 0x7f);
+  }
 
-  return this.curve.point(ax, ay);
+  return this._createEncoderBuffer(objid);
 };
 
-JPoint.prototype.neg = function neg() {
-  return this.curve.jpoint(this.x, this.y.redNeg(), this.z);
-};
+function two(num) {
+  if (num < 10)
+    return '0' + num;
+  else
+    return num;
+}
 
-JPoint.prototype.add = function add(p) {
-  // O + P = P
-  if (this.isInfinity())
-    return p;
+DERNode.prototype._encodeTime = function encodeTime(time, tag) {
+  var str;
+  var date = new Date(time);
 
-  // P + O = P
-  if (p.isInfinity())
-    return this;
+  if (tag === 'gentime') {
+    str = [
+      two(date.getFullYear()),
+      two(date.getUTCMonth() + 1),
+      two(date.getUTCDate()),
+      two(date.getUTCHours()),
+      two(date.getUTCMinutes()),
+      two(date.getUTCSeconds()),
+      'Z'
+    ].join('');
+  } else if (tag === 'utctime') {
+    str = [
+      two(date.getFullYear() % 100),
+      two(date.getUTCMonth() + 1),
+      two(date.getUTCDate()),
+      two(date.getUTCHours()),
+      two(date.getUTCMinutes()),
+      two(date.getUTCSeconds()),
+      'Z'
+    ].join('');
+  } else {
+    this.reporter.error('Encoding ' + tag + ' time is not supported yet');
+  }
 
-  // 12M + 4S + 7A
-  var pz2 = p.z.redSqr();
-  var z2 = this.z.redSqr();
-  var u1 = this.x.redMul(pz2);
-  var u2 = p.x.redMul(z2);
-  var s1 = this.y.redMul(pz2.redMul(p.z));
-  var s2 = p.y.redMul(z2.redMul(this.z));
+  return this._encodeStr(str, 'octstr');
+};
 
-  var h = u1.redSub(u2);
-  var r = s1.redSub(s2);
-  if (h.cmpn(0) === 0) {
-    if (r.cmpn(0) !== 0)
-      return this.curve.jpoint(null, null, null);
-    else
-      return this.dbl();
+DERNode.prototype._encodeNull = function encodeNull() {
+  return this._createEncoderBuffer('');
+};
+
+DERNode.prototype._encodeInt = function encodeInt(num, values) {
+  if (typeof num === 'string') {
+    if (!values)
+      return this.reporter.error('String int or enum given, but no values map');
+    if (!values.hasOwnProperty(num)) {
+      return this.reporter.error('Values map doesn\'t contain: ' +
+                                 JSON.stringify(num));
+    }
+    num = values[num];
   }
 
-  var h2 = h.redSqr();
-  var h3 = h2.redMul(h);
-  var v = u1.redMul(h2);
+  // Bignum, assume big endian
+  if (typeof num !== 'number' && !Buffer.isBuffer(num)) {
+    var numArray = num.toArray();
+    if (!num.sign && numArray[0] & 0x80) {
+      numArray.unshift(0);
+    }
+    num = new Buffer(numArray);
+  }
 
-  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
-  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
-  var nz = this.z.redMul(p.z).redMul(h);
+  if (Buffer.isBuffer(num)) {
+    var size = num.length;
+    if (num.length === 0)
+      size++;
 
-  return this.curve.jpoint(nx, ny, nz);
-};
+    var out = new Buffer(size);
+    num.copy(out);
+    if (num.length === 0)
+      out[0] = 0
+    return this._createEncoderBuffer(out);
+  }
 
-JPoint.prototype.mixedAdd = function mixedAdd(p) {
-  // O + P = P
-  if (this.isInfinity())
-    return p.toJ();
+  if (num < 0x80)
+    return this._createEncoderBuffer(num);
 
-  // P + O = P
-  if (p.isInfinity())
-    return this;
+  if (num < 0x100)
+    return this._createEncoderBuffer([0, num]);
 
-  // 8M + 3S + 7A
-  var z2 = this.z.redSqr();
-  var u1 = this.x;
-  var u2 = p.x.redMul(z2);
-  var s1 = this.y;
-  var s2 = p.y.redMul(z2).redMul(this.z);
+  var size = 1;
+  for (var i = num; i >= 0x100; i >>= 8)
+    size++;
 
-  var h = u1.redSub(u2);
-  var r = s1.redSub(s2);
-  if (h.cmpn(0) === 0) {
-    if (r.cmpn(0) !== 0)
-      return this.curve.jpoint(null, null, null);
-    else
-      return this.dbl();
+  var out = new Array(size);
+  for (var i = out.length - 1; i >= 0; i--) {
+    out[i] = num & 0xff;
+    num >>= 8;
+  }
+  if(out[0] & 0x80) {
+    out.unshift(0);
   }
 
-  var h2 = h.redSqr();
-  var h3 = h2.redMul(h);
-  var v = u1.redMul(h2);
-
-  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
-  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
-  var nz = this.z.redMul(h);
+  return this._createEncoderBuffer(new Buffer(out));
+};
 
-  return this.curve.jpoint(nx, ny, nz);
+DERNode.prototype._encodeBool = function encodeBool(value) {
+  return this._createEncoderBuffer(value ? 0xff : 0);
 };
 
-JPoint.prototype.dblp = function dblp(pow) {
-  if (pow === 0)
-    return this;
-  if (this.isInfinity())
-    return this;
-  if (!pow)
-    return this.dbl();
+DERNode.prototype._use = function use(entity, obj) {
+  if (typeof entity === 'function')
+    entity = entity(obj);
+  return entity._getEncoder('der').tree;
+};
 
-  if (this.curve.zeroA || this.curve.threeA) {
-    var r = this;
-    for (var i = 0; i < pow; i++)
-      r = r.dbl();
-    return r;
-  }
+DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) {
+  var state = this._baseState;
+  var i;
+  if (state['default'] === null)
+    return false;
 
-  // 1M + 2S + 1A + N * (4S + 5M + 8A)
-  // N = 1 => 6M + 6S + 9A
-  var a = this.curve.a;
-  var tinv = this.curve.tinv;
+  var data = dataBuffer.join();
+  if (state.defaultBuffer === undefined)
+    state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join();
 
-  var jx = this.x;
-  var jy = this.y;
-  var jz = this.z;
-  var jz4 = jz.redSqr().redSqr();
+  if (data.length !== state.defaultBuffer.length)
+    return false;
 
-  // Reuse results
-  var jyd = jy.redAdd(jy);
-  for (var i = 0; i < pow; i++) {
-    var jx2 = jx.redSqr();
-    var jyd2 = jyd.redSqr();
-    var jyd4 = jyd2.redSqr();
-    var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));
+  for (i=0; i < data.length; i++)
+    if (data[i] !== state.defaultBuffer[i])
+      return false;
 
-    var t1 = jx.redMul(jyd2);
-    var nx = c.redSqr().redISub(t1.redAdd(t1));
-    var t2 = t1.redISub(nx);
-    var dny = c.redMul(t2);
-    dny = dny.redIAdd(dny).redISub(jyd4);
-    var nz = jyd.redMul(jz);
-    if (i + 1 < pow)
-      jz4 = jz4.redMul(jyd4);
+  return true;
+};
 
-    jx = nx;
-    jz = nz;
-    jyd = dny;
-  }
+// Utility methods
 
-  return this.curve.jpoint(jx, jyd.redMul(tinv), jz);
-};
+function encodeTag(tag, primitive, cls, reporter) {
+  var res;
 
-JPoint.prototype.dbl = function dbl() {
-  if (this.isInfinity())
-    return this;
+  if (tag === 'seqof')
+    tag = 'seq';
+  else if (tag === 'setof')
+    tag = 'set';
 
-  if (this.curve.zeroA)
-    return this._zeroDbl();
-  else if (this.curve.threeA)
-    return this._threeDbl();
+  if (der.tagByName.hasOwnProperty(tag))
+    res = der.tagByName[tag];
+  else if (typeof tag === 'number' && (tag | 0) === tag)
+    res = tag;
   else
-    return this._dbl();
-};
-
-JPoint.prototype._zeroDbl = function _zeroDbl() {
-  var nx;
-  var ny;
-  var nz;
-  // Z = 1
-  if (this.zOne) {
-    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
-    //     #doubling-mdbl-2007-bl
-    // 1M + 5S + 14A
+    return reporter.error('Unknown tag: ' + tag);
 
-    // XX = X1^2
-    var xx = this.x.redSqr();
-    // YY = Y1^2
-    var yy = this.y.redSqr();
-    // YYYY = YY^2
-    var yyyy = yy.redSqr();
-    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
-    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
-    s = s.redIAdd(s);
-    // M = 3 * XX + a; a = 0
-    var m = xx.redAdd(xx).redIAdd(xx);
-    // T = M ^ 2 - 2*S
-    var t = m.redSqr().redISub(s).redISub(s);
+  if (res >= 0x1f)
+    return reporter.error('Multi-octet tag encoding unsupported');
 
-    // 8 * YYYY
-    var yyyy8 = yyyy.redIAdd(yyyy);
-    yyyy8 = yyyy8.redIAdd(yyyy8);
-    yyyy8 = yyyy8.redIAdd(yyyy8);
+  if (!primitive)
+    res |= 0x20;
 
-    // X3 = T
-    nx = t;
-    // Y3 = M * (S - T) - 8 * YYYY
-    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
-    // Z3 = 2*Y1
-    nz = this.y.redAdd(this.y);
-  } else {
-    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
-    //     #doubling-dbl-2009-l
-    // 2M + 5S + 13A
+  res |= (der.tagClassByName[cls || 'universal'] << 6);
 
-    // A = X1^2
-    var a = this.x.redSqr();
-    // B = Y1^2
-    var b = this.y.redSqr();
-    // C = B^2
-    var c = b.redSqr();
-    // D = 2 * ((X1 + B)^2 - A - C)
-    var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c);
-    d = d.redIAdd(d);
-    // E = 3 * A
-    var e = a.redAdd(a).redIAdd(a);
-    // F = E^2
-    var f = e.redSqr();
+  return res;
+}
 
-    // 8 * C
-    var c8 = c.redIAdd(c);
-    c8 = c8.redIAdd(c8);
-    c8 = c8.redIAdd(c8);
+},{"../../asn1":1,"buffer":47,"inherits":95}],13:[function(require,module,exports){
+var encoders = exports;
 
-    // X3 = F - 2 * D
-    nx = f.redISub(d).redISub(d);
-    // Y3 = E * (D - X3) - 8 * C
-    ny = e.redMul(d.redISub(nx)).redISub(c8);
-    // Z3 = 2 * Y1 * Z1
-    nz = this.y.redMul(this.z);
-    nz = nz.redIAdd(nz);
-  }
+encoders.der = require('./der');
+encoders.pem = require('./pem');
 
-  return this.curve.jpoint(nx, ny, nz);
-};
+},{"./der":12,"./pem":14}],14:[function(require,module,exports){
+var inherits = require('inherits');
 
-JPoint.prototype._threeDbl = function _threeDbl() {
-  var nx;
-  var ny;
-  var nz;
-  // Z = 1
-  if (this.zOne) {
-    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html
-    //     #doubling-mdbl-2007-bl
-    // 1M + 5S + 15A
+var DEREncoder = require('./der');
 
-    // XX = X1^2
-    var xx = this.x.redSqr();
-    // YY = Y1^2
-    var yy = this.y.redSqr();
-    // YYYY = YY^2
-    var yyyy = yy.redSqr();
-    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
-    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
-    s = s.redIAdd(s);
-    // M = 3 * XX + a
-    var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a);
-    // T = M^2 - 2 * S
-    var t = m.redSqr().redISub(s).redISub(s);
-    // X3 = T
-    nx = t;
-    // Y3 = M * (S - T) - 8 * YYYY
-    var yyyy8 = yyyy.redIAdd(yyyy);
-    yyyy8 = yyyy8.redIAdd(yyyy8);
-    yyyy8 = yyyy8.redIAdd(yyyy8);
-    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
-    // Z3 = 2 * Y1
-    nz = this.y.redAdd(this.y);
-  } else {
-    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
-    // 3M + 5S
+function PEMEncoder(entity) {
+  DEREncoder.call(this, entity);
+  this.enc = 'pem';
+};
+inherits(PEMEncoder, DEREncoder);
+module.exports = PEMEncoder;
 
-    // delta = Z1^2
-    var delta = this.z.redSqr();
-    // gamma = Y1^2
-    var gamma = this.y.redSqr();
-    // beta = X1 * gamma
-    var beta = this.x.redMul(gamma);
-    // alpha = 3 * (X1 - delta) * (X1 + delta)
-    var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta));
-    alpha = alpha.redAdd(alpha).redIAdd(alpha);
-    // X3 = alpha^2 - 8 * beta
-    var beta4 = beta.redIAdd(beta);
-    beta4 = beta4.redIAdd(beta4);
-    var beta8 = beta4.redAdd(beta4);
-    nx = alpha.redSqr().redISub(beta8);
-    // Z3 = (Y1 + Z1)^2 - gamma - delta
-    nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta);
-    // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2
-    var ggamma8 = gamma.redSqr();
-    ggamma8 = ggamma8.redIAdd(ggamma8);
-    ggamma8 = ggamma8.redIAdd(ggamma8);
-    ggamma8 = ggamma8.redIAdd(ggamma8);
-    ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8);
-  }
+PEMEncoder.prototype.encode = function encode(data, options) {
+  var buf = DEREncoder.prototype.encode.call(this, data);
 
-  return this.curve.jpoint(nx, ny, nz);
+  var p = buf.toString('base64');
+  var out = [ '-----BEGIN ' + options.label + '-----' ];
+  for (var i = 0; i < p.length; i += 64)
+    out.push(p.slice(i, i + 64));
+  out.push('-----END ' + options.label + '-----');
+  return out.join('\n');
 };
 
-JPoint.prototype._dbl = function _dbl() {
-  var a = this.curve.a;
+},{"./der":12,"inherits":95}],15:[function(require,module,exports){
+(function (global){
+'use strict';
 
-  // 4M + 6S + 10A
-  var jx = this.x;
-  var jy = this.y;
-  var jz = this.z;
-  var jz4 = jz.redSqr().redSqr();
+// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
+// original notice:
 
-  var jx2 = jx.redSqr();
-  var jy2 = jy.redSqr();
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+function compare(a, b) {
+  if (a === b) {
+    return 0;
+  }
 
-  var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));
+  var x = a.length;
+  var y = b.length;
 
-  var jxd4 = jx.redAdd(jx);
-  jxd4 = jxd4.redIAdd(jxd4);
-  var t1 = jxd4.redMul(jy2);
-  var nx = c.redSqr().redISub(t1.redAdd(t1));
-  var t2 = t1.redISub(nx);
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i];
+      y = b[i];
+      break;
+    }
+  }
 
-  var jyd8 = jy2.redSqr();
-  jyd8 = jyd8.redIAdd(jyd8);
-  jyd8 = jyd8.redIAdd(jyd8);
-  jyd8 = jyd8.redIAdd(jyd8);
-  var ny = c.redMul(t2).redISub(jyd8);
-  var nz = jy.redAdd(jy).redMul(jz);
+  if (x < y) {
+    return -1;
+  }
+  if (y < x) {
+    return 1;
+  }
+  return 0;
+}
+function isBuffer(b) {
+  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
+    return global.Buffer.isBuffer(b);
+  }
+  return !!(b != null && b._isBuffer);
+}
 
-  return this.curve.jpoint(nx, ny, nz);
-};
+// based on node assert, original notice:
 
-JPoint.prototype.trpl = function trpl() {
-  if (!this.curve.zeroA)
-    return this.dbl().add(this);
+// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
+//
+// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
+//
+// Originally from narwhal.js (http://narwhaljs.org)
+// Copyright (c) 2009 Thomas Robinson <280north.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the 'Software'), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl
-  // 5M + 10S + ...
+var util = require('util/');
+var hasOwn = Object.prototype.hasOwnProperty;
+var pSlice = Array.prototype.slice;
+var functionsHaveNames = (function () {
+  return function foo() {}.name === 'foo';
+}());
+function pToString (obj) {
+  return Object.prototype.toString.call(obj);
+}
+function isView(arrbuf) {
+  if (isBuffer(arrbuf)) {
+    return false;
+  }
+  if (typeof global.ArrayBuffer !== 'function') {
+    return false;
+  }
+  if (typeof ArrayBuffer.isView === 'function') {
+    return ArrayBuffer.isView(arrbuf);
+  }
+  if (!arrbuf) {
+    return false;
+  }
+  if (arrbuf instanceof DataView) {
+    return true;
+  }
+  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
+    return true;
+  }
+  return false;
+}
+// 1. The assert module provides functions that throw
+// AssertionError's when particular conditions are not met. The
+// assert module must conform to the following interface.
 
-  // XX = X1^2
-  var xx = this.x.redSqr();
-  // YY = Y1^2
-  var yy = this.y.redSqr();
-  // ZZ = Z1^2
-  var zz = this.z.redSqr();
-  // YYYY = YY^2
-  var yyyy = yy.redSqr();
-  // M = 3 * XX + a * ZZ2; a = 0
-  var m = xx.redAdd(xx).redIAdd(xx);
-  // MM = M^2
-  var mm = m.redSqr();
-  // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM
-  var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
-  e = e.redIAdd(e);
-  e = e.redAdd(e).redIAdd(e);
-  e = e.redISub(mm);
-  // EE = E^2
-  var ee = e.redSqr();
-  // T = 16*YYYY
-  var t = yyyy.redIAdd(yyyy);
-  t = t.redIAdd(t);
-  t = t.redIAdd(t);
-  t = t.redIAdd(t);
-  // U = (M + E)^2 - MM - EE - T
-  var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t);
-  // X3 = 4 * (X1 * EE - 4 * YY * U)
-  var yyu4 = yy.redMul(u);
-  yyu4 = yyu4.redIAdd(yyu4);
-  yyu4 = yyu4.redIAdd(yyu4);
-  var nx = this.x.redMul(ee).redISub(yyu4);
-  nx = nx.redIAdd(nx);
-  nx = nx.redIAdd(nx);
-  // Y3 = 8 * Y1 * (U * (T - U) - E * EE)
-  var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee)));
-  ny = ny.redIAdd(ny);
-  ny = ny.redIAdd(ny);
-  ny = ny.redIAdd(ny);
-  // Z3 = (Z1 + E)^2 - ZZ - EE
-  var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee);
+var assert = module.exports = ok;
 
-  return this.curve.jpoint(nx, ny, nz);
-};
+// 2. The AssertionError is defined in assert.
+// new assert.AssertionError({ message: message,
+//                             actual: actual,
+//                             expected: expected })
 
-JPoint.prototype.mul = function mul(k, kbase) {
-  k = new BN(k, kbase);
+var regex = /\s*function\s+([^\(\s]*)\s*/;
+// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
+function getName(func) {
+  if (!util.isFunction(func)) {
+    return;
+  }
+  if (functionsHaveNames) {
+    return func.name;
+  }
+  var str = func.toString();
+  var match = str.match(regex);
+  return match && match[1];
+}
+assert.AssertionError = function AssertionError(options) {
+  this.name = 'AssertionError';
+  this.actual = options.actual;
+  this.expected = options.expected;
+  this.operator = options.operator;
+  if (options.message) {
+    this.message = options.message;
+    this.generatedMessage = false;
+  } else {
+    this.message = getMessage(this);
+    this.generatedMessage = true;
+  }
+  var stackStartFunction = options.stackStartFunction || fail;
+  if (Error.captureStackTrace) {
+    Error.captureStackTrace(this, stackStartFunction);
+  } else {
+    // non v8 browsers so we can have a stacktrace
+    var err = new Error();
+    if (err.stack) {
+      var out = err.stack;
 
-  return this.curve._wnafMul(this, k);
+      // try to strip useless frames
+      var fn_name = getName(stackStartFunction);
+      var idx = out.indexOf('\n' + fn_name);
+      if (idx >= 0) {
+        // once we have located the function frame
+        // we need to strip out everything before it (and its line)
+        var next_line = out.indexOf('\n', idx + 1);
+        out = out.substring(next_line + 1);
+      }
+
+      this.stack = out;
+    }
+  }
 };
 
-JPoint.prototype.eq = function eq(p) {
-  if (p.type === 'affine')
-    return this.eq(p.toJ());
+// assert.AssertionError instanceof Error
+util.inherits(assert.AssertionError, Error);
 
-  if (this === p)
-    return true;
+function truncate(s, n) {
+  if (typeof s === 'string') {
+    return s.length < n ? s : s.slice(0, n);
+  } else {
+    return s;
+  }
+}
+function inspect(something) {
+  if (functionsHaveNames || !util.isFunction(something)) {
+    return util.inspect(something);
+  }
+  var rawname = getName(something);
+  var name = rawname ? ': ' + rawname : '';
+  return '[Function' +  name + ']';
+}
+function getMessage(self) {
+  return truncate(inspect(self.actual), 128) + ' ' +
+         self.operator + ' ' +
+         truncate(inspect(self.expected), 128);
+}
 
-  // x1 * z2^2 == x2 * z1^2
-  var z2 = this.z.redSqr();
-  var pz2 = p.z.redSqr();
-  if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0)
-    return false;
+// At present only the three keys mentioned above are used and
+// understood by the spec. Implementations or sub modules can pass
+// other keys to the AssertionError's constructor - they will be
+// ignored.
 
-  // y1 * z2^3 == y2 * z1^3
-  var z3 = z2.redMul(this.z);
-  var pz3 = pz2.redMul(p.z);
-  return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0;
-};
+// 3. All of the following functions must throw an AssertionError
+// when a corresponding condition is not met, with a message that
+// may be undefined if not provided.  All assertion methods provide
+// both the actual and expected values to the assertion error for
+// display purposes.
 
-JPoint.prototype.eqXToP = function eqXToP(x) {
-  var zs = this.z.redSqr();
-  var rx = x.toRed(this.curve.red).redMul(zs);
-  if (this.x.cmp(rx) === 0)
-    return true;
+function fail(actual, expected, message, operator, stackStartFunction) {
+  throw new assert.AssertionError({
+    message: message,
+    actual: actual,
+    expected: expected,
+    operator: operator,
+    stackStartFunction: stackStartFunction
+  });
+}
 
-  var xc = x.clone();
-  var t = this.curve.redN.redMul(zs);
-  for (;;) {
-    xc.iadd(this.curve.n);
-    if (xc.cmp(this.curve.p) >= 0)
-      return false;
+// EXTENSION! allows for well behaved errors defined elsewhere.
+assert.fail = fail;
 
-    rx.redIAdd(t);
-    if (this.x.cmp(rx) === 0)
-      return true;
+// 4. Pure assertion tests whether a value is truthy, as determined
+// by !!guard.
+// assert.ok(guard, message_opt);
+// This statement is equivalent to assert.equal(true, !!guard,
+// message_opt);. To test strictly for the value true, use
+// assert.strictEqual(true, guard, message_opt);.
+
+function ok(value, message) {
+  if (!value) fail(value, true, message, '==', assert.ok);
+}
+assert.ok = ok;
+
+// 5. The equality assertion tests shallow, coercive equality with
+// ==.
+// assert.equal(actual, expected, message_opt);
+
+assert.equal = function equal(actual, expected, message) {
+  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
+};
+
+// 6. The non-equality assertion tests for whether two objects are not equal
+// with != assert.notEqual(actual, expected, message_opt);
+
+assert.notEqual = function notEqual(actual, expected, message) {
+  if (actual == expected) {
+    fail(actual, expected, message, '!=', assert.notEqual);
   }
-  return false;
 };
 
-JPoint.prototype.inspect = function inspect() {
-  if (this.isInfinity())
-    return '<EC JPoint Infinity>';
-  return '<EC JPoint x: ' + this.x.toString(16, 2) +
-      ' y: ' + this.y.toString(16, 2) +
-      ' z: ' + this.z.toString(16, 2) + '>';
+// 7. The equivalence assertion tests a deep equality relation.
+// assert.deepEqual(actual, expected, message_opt);
+
+assert.deepEqual = function deepEqual(actual, expected, message) {
+  if (!_deepEqual(actual, expected, false)) {
+    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
+  }
 };
 
-JPoint.prototype.isInfinity = function isInfinity() {
-  // XXX This code assumes that zero is always zero in red
-  return this.z.cmpn(0) === 0;
+assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
+  if (!_deepEqual(actual, expected, true)) {
+    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
+  }
 };
 
-},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],103:[function(require,module,exports){
-'use strict';
+function _deepEqual(actual, expected, strict, memos) {
+  // 7.1. All identical values are equivalent, as determined by ===.
+  if (actual === expected) {
+    return true;
+  } else if (isBuffer(actual) && isBuffer(expected)) {
+    return compare(actual, expected) === 0;
 
-var curves = exports;
+  // 7.2. If the expected value is a Date object, the actual value is
+  // equivalent if it is also a Date object that refers to the same time.
+  } else if (util.isDate(actual) && util.isDate(expected)) {
+    return actual.getTime() === expected.getTime();
 
-var hash = require('hash.js');
-var elliptic = require('../elliptic');
+  // 7.3 If the expected value is a RegExp object, the actual value is
+  // equivalent if it is also a RegExp object with the same source and
+  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
+  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
+    return actual.source === expected.source &&
+           actual.global === expected.global &&
+           actual.multiline === expected.multiline &&
+           actual.lastIndex === expected.lastIndex &&
+           actual.ignoreCase === expected.ignoreCase;
 
-var assert = elliptic.utils.assert;
+  // 7.4. Other pairs that do not both pass typeof value == 'object',
+  // equivalence is determined by ==.
+  } else if ((actual === null || typeof actual !== 'object') &&
+             (expected === null || typeof expected !== 'object')) {
+    return strict ? actual === expected : actual == expected;
 
-function PresetCurve(options) {
-  if (options.type === 'short')
-    this.curve = new elliptic.curve.short(options);
-  else if (options.type === 'edwards')
-    this.curve = new elliptic.curve.edwards(options);
-  else
-    this.curve = new elliptic.curve.mont(options);
-  this.g = this.curve.g;
-  this.n = this.curve.n;
-  this.hash = options.hash;
+  // If both values are instances of typed arrays, wrap their underlying
+  // ArrayBuffers in a Buffer each to increase performance
+  // This optimization requires the arrays to have the same type as checked by
+  // Object.prototype.toString (aka pToString). Never perform binary
+  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
+  // bit patterns are not identical.
+  } else if (isView(actual) && isView(expected) &&
+             pToString(actual) === pToString(expected) &&
+             !(actual instanceof Float32Array ||
+               actual instanceof Float64Array)) {
+    return compare(new Uint8Array(actual.buffer),
+                   new Uint8Array(expected.buffer)) === 0;
 
-  assert(this.g.validate(), 'Invalid curve');
-  assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O');
-}
-curves.PresetCurve = PresetCurve;
+  // 7.5 For all other Object pairs, including Array objects, equivalence is
+  // determined by having the same number of owned properties (as verified
+  // with Object.prototype.hasOwnProperty.call), the same set of keys
+  // (although not necessarily the same order), equivalent values for every
+  // corresponding key, and an identical 'prototype' property. Note: this
+  // accounts for both named and indexed properties on Arrays.
+  } else if (isBuffer(actual) !== isBuffer(expected)) {
+    return false;
+  } else {
+    memos = memos || {actual: [], expected: []};
 
-function defineCurve(name, options) {
-  Object.defineProperty(curves, name, {
-    configurable: true,
-    enumerable: true,
-    get: function() {
-      var curve = new PresetCurve(options);
-      Object.defineProperty(curves, name, {
-        configurable: true,
-        enumerable: true,
-        value: curve
-      });
-      return curve;
+    var actualIndex = memos.actual.indexOf(actual);
+    if (actualIndex !== -1) {
+      if (actualIndex === memos.expected.indexOf(expected)) {
+        return true;
+      }
     }
-  });
+
+    memos.actual.push(actual);
+    memos.expected.push(expected);
+
+    return objEquiv(actual, expected, strict, memos);
+  }
 }
 
-defineCurve('p192', {
-  type: 'short',
-  prime: 'p192',
-  p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff',
-  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc',
-  b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1',
-  n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831',
-  hash: hash.sha256,
-  gRed: false,
-  g: [
-    '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012',
-    '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811'
-  ]
-});
+function isArguments(object) {
+  return Object.prototype.toString.call(object) == '[object Arguments]';
+}
 
-defineCurve('p224', {
-  type: 'short',
-  prime: 'p224',
-  p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001',
-  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe',
-  b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4',
-  n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d',
-  hash: hash.sha256,
-  gRed: false,
-  g: [
-    'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21',
-    'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34'
-  ]
-});
+function objEquiv(a, b, strict, actualVisitedObjects) {
+  if (a === null || a === undefined || b === null || b === undefined)
+    return false;
+  // if one is a primitive, the other must be same
+  if (util.isPrimitive(a) || util.isPrimitive(b))
+    return a === b;
+  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
+    return false;
+  var aIsArgs = isArguments(a);
+  var bIsArgs = isArguments(b);
+  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
+    return false;
+  if (aIsArgs) {
+    a = pSlice.call(a);
+    b = pSlice.call(b);
+    return _deepEqual(a, b, strict);
+  }
+  var ka = objectKeys(a);
+  var kb = objectKeys(b);
+  var key, i;
+  // having the same number of owned properties (keys incorporates
+  // hasOwnProperty)
+  if (ka.length !== kb.length)
+    return false;
+  //the same set of keys (although not necessarily the same order),
+  ka.sort();
+  kb.sort();
+  //~~~cheap key test
+  for (i = ka.length - 1; i >= 0; i--) {
+    if (ka[i] !== kb[i])
+      return false;
+  }
+  //equivalent values for every corresponding key, and
+  //~~~possibly expensive deep test
+  for (i = ka.length - 1; i >= 0; i--) {
+    key = ka[i];
+    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
+      return false;
+  }
+  return true;
+}
 
-defineCurve('p256', {
-  type: 'short',
-  prime: null,
-  p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff',
-  a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc',
-  b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b',
-  n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551',
-  hash: hash.sha256,
-  gRed: false,
-  g: [
-    '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296',
-    '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5'
-  ]
-});
+// 8. The non-equivalence assertion tests for any deep inequality.
+// assert.notDeepEqual(actual, expected, message_opt);
 
-defineCurve('p384', {
-  type: 'short',
-  prime: null,
-  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'fffffffe ffffffff 00000000 00000000 ffffffff',
-  a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'fffffffe ffffffff 00000000 00000000 fffffffc',
-  b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' +
-     '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef',
-  n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' +
-     'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973',
-  hash: hash.sha384,
-  gRed: false,
-  g: [
-    'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' +
-    '5502f25d bf55296c 3a545e38 72760ab7',
-    '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' +
-    '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f'
-  ]
-});
+assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
+  if (_deepEqual(actual, expected, false)) {
+    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
+  }
+};
 
-defineCurve('p521', {
-  type: 'short',
-  prime: null,
-  p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'ffffffff ffffffff ffffffff ffffffff ffffffff',
-  a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'ffffffff ffffffff ffffffff ffffffff fffffffc',
-  b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' +
-     '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' +
-     '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00',
-  n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
-     'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' +
-     'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409',
-  hash: hash.sha512,
-  gRed: false,
-  g: [
-    '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' +
-    '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' +
-    'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66',
-    '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' +
-    '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' +
-    '3fad0761 353c7086 a272c240 88be9476 9fd16650'
-  ]
-});
+assert.notDeepStrictEqual = notDeepStrictEqual;
+function notDeepStrictEqual(actual, expected, message) {
+  if (_deepEqual(actual, expected, true)) {
+    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
+  }
+}
 
-defineCurve('curve25519', {
-  type: 'mont',
-  prime: 'p25519',
-  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
-  a: '76d06',
-  b: '1',
-  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
-  hash: hash.sha256,
-  gRed: false,
-  g: [
-    '9'
-  ]
-});
 
-defineCurve('ed25519', {
-  type: 'edwards',
-  prime: 'p25519',
-  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
-  a: '-1',
-  c: '1',
-  // -121665 * (121666^(-1)) (mod P)
-  d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3',
-  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
-  hash: hash.sha256,
-  gRed: false,
-  g: [
-    '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a',
+// 9. The strict equality assertion tests strict equality, as determined by ===.
+// assert.strictEqual(actual, expected, message_opt);
 
-    // 4/5
-    '6666666666666666666666666666666666666666666666666666666666666658'
-  ]
-});
+assert.strictEqual = function strictEqual(actual, expected, message) {
+  if (actual !== expected) {
+    fail(actual, expected, message, '===', assert.strictEqual);
+  }
+};
 
-var pre;
-try {
-  pre = require('./precomputed/secp256k1');
-} catch (e) {
-  pre = undefined;
-}
+// 10. The strict non-equality assertion tests for strict inequality, as
+// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
 
-defineCurve('secp256k1', {
-  type: 'short',
-  prime: 'k256',
-  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f',
-  a: '0',
-  b: '7',
-  n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141',
-  h: '1',
-  hash: hash.sha256,
+assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
+  if (actual === expected) {
+    fail(actual, expected, message, '!==', assert.notStrictEqual);
+  }
+};
 
-  // Precomputed endomorphism
-  beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee',
-  lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72',
-  basis: [
-    {
-      a: '3086d221a7d46bcde86c90e49284eb15',
-      b: '-e4437ed6010e88286f547fa90abfe4c3'
-    },
-    {
-      a: '114ca50f7a8e2f3f657c1108d9d44cfd8',
-      b: '3086d221a7d46bcde86c90e49284eb15'
-    }
-  ],
+function expectedException(actual, expected) {
+  if (!actual || !expected) {
+    return false;
+  }
 
-  gRed: false,
-  g: [
-    '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
-    '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
-    pre
-  ]
-});
+  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
+    return expected.test(actual);
+  }
 
-},{"../elliptic":97,"./precomputed/secp256k1":110,"hash.js":114}],104:[function(require,module,exports){
-'use strict';
+  try {
+    if (actual instanceof expected) {
+      return true;
+    }
+  } catch (e) {
+    // Ignore.  The instanceof check doesn't work for arrow functions.
+  }
 
-var BN = require('bn.js');
-var HmacDRBG = require('hmac-drbg');
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
+  if (Error.isPrototypeOf(expected)) {
+    return false;
+  }
 
-var KeyPair = require('./key');
-var Signature = require('./signature');
+  return expected.call({}, actual) === true;
+}
 
-function EC(options) {
-  if (!(this instanceof EC))
-    return new EC(options);
+function _tryBlock(block) {
+  var error;
+  try {
+    block();
+  } catch (e) {
+    error = e;
+  }
+  return error;
+}
 
-  // Shortcut `elliptic.ec(curve-name)`
-  if (typeof options === 'string') {
-    assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options);
+function _throws(shouldThrow, block, expected, message) {
+  var actual;
 
-    options = elliptic.curves[options];
+  if (typeof block !== 'function') {
+    throw new TypeError('"block" argument must be a function');
   }
 
-  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
-  if (options instanceof elliptic.curves.PresetCurve)
-    options = { curve: options };
+  if (typeof expected === 'string') {
+    message = expected;
+    expected = null;
+  }
 
-  this.curve = options.curve.curve;
-  this.n = this.curve.n;
-  this.nh = this.n.ushrn(1);
-  this.g = this.curve.g;
+  actual = _tryBlock(block);
 
-  // Point on curve
-  this.g = options.curve.g;
-  this.g.precompute(options.curve.n.bitLength() + 1);
+  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
+            (message ? ' ' + message : '.');
 
-  // Hash for function for DRBG
-  this.hash = options.hash || options.curve.hash;
+  if (shouldThrow && !actual) {
+    fail(actual, expected, 'Missing expected exception' + message);
+  }
+
+  var userProvidedMessage = typeof message === 'string';
+  var isUnwantedException = !shouldThrow && util.isError(actual);
+  var isUnexpectedException = !shouldThrow && actual && !expected;
+
+  if ((isUnwantedException &&
+      userProvidedMessage &&
+      expectedException(actual, expected)) ||
+      isUnexpectedException) {
+    fail(actual, expected, 'Got unwanted exception' + message);
+  }
+
+  if ((shouldThrow && actual && expected &&
+      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
+    throw actual;
+  }
 }
-module.exports = EC;
 
-EC.prototype.keyPair = function keyPair(options) {
-  return new KeyPair(this, options);
-};
+// 11. Expected to throw an error:
+// assert.throws(block, Error_opt, message_opt);
 
-EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {
-  return KeyPair.fromPrivate(this, priv, enc);
+assert.throws = function(block, /*optional*/error, /*optional*/message) {
+  _throws(true, block, error, message);
 };
 
-EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {
-  return KeyPair.fromPublic(this, pub, enc);
+// EXTENSION! This is annoying to write outside this module.
+assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
+  _throws(false, block, error, message);
 };
 
-EC.prototype.genKeyPair = function genKeyPair(options) {
-  if (!options)
-    options = {};
-
-  // Instantiate Hmac_DRBG
-  var drbg = new HmacDRBG({
-    hash: this.hash,
-    pers: options.pers,
-    persEnc: options.persEnc || 'utf8',
-    entropy: options.entropy || elliptic.rand(this.hash.hmacStrength),
-    entropyEnc: options.entropy && options.entropyEnc || 'utf8',
-    nonce: this.n.toArray()
-  });
-
-  var bytes = this.n.byteLength();
-  var ns2 = this.n.sub(new BN(2));
-  do {
-    var priv = new BN(drbg.generate(bytes));
-    if (priv.cmp(ns2) > 0)
-      continue;
+assert.ifError = function(err) { if (err) throw err; };
 
-    priv.iaddn(1);
-    return this.keyFromPrivate(priv);
-  } while (true);
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) {
+    if (hasOwn.call(obj, key)) keys.push(key);
+  }
+  return keys;
 };
 
-EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
-  var delta = msg.byteLength() * 8 - this.n.bitLength();
-  if (delta > 0)
-    msg = msg.ushrn(delta);
-  if (!truncOnly && msg.cmp(this.n) >= 0)
-    return msg.sub(this.n);
-  else
-    return msg;
-};
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"util/":148}],16:[function(require,module,exports){
+'use strict'
 
-EC.prototype.sign = function sign(msg, key, enc, options) {
-  if (typeof enc === 'object') {
-    options = enc;
-    enc = null;
-  }
-  if (!options)
-    options = {};
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
 
-  key = this.keyFromPrivate(key, enc);
-  msg = this._truncateToN(new BN(msg, 16));
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
 
-  // Zero-extend key to provide enough entropy
-  var bytes = this.n.byteLength();
-  var bkey = key.getPrivate().toArray('be', bytes);
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
 
-  // Zero-extend nonce to have the same byte size as N
-  var nonce = msg.toArray('be', bytes);
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
 
-  // Instantiate Hmac_DRBG
-  var drbg = new HmacDRBG({
-    hash: this.hash,
-    entropy: bkey,
-    nonce: nonce,
-    pers: options.pers,
-    persEnc: options.persEnc || 'utf8'
-  });
+function placeHoldersCount (b64) {
+  var len = b64.length
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
 
-  // Number of bytes to generate
-  var ns1 = this.n.sub(new BN(1));
+  // the number of equal signs (place holders)
+  // if there are two placeholders, than the two characters before it
+  // represent one byte
+  // if there is only one, then the three characters before it represent 2 bytes
+  // this is just a cheap hack to not do indexOf twice
+  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+}
 
-  for (var iter = 0; true; iter++) {
-    var k = options.k ?
-        options.k(iter) :
-        new BN(drbg.generate(this.n.byteLength()));
-    k = this._truncateToN(k, true);
-    if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0)
-      continue;
+function byteLength (b64) {
+  // base64 is 4/3 + up to two characters of the original data
+  return b64.length * 3 / 4 - placeHoldersCount(b64)
+}
 
-    var kp = this.g.mul(k);
-    if (kp.isInfinity())
-      continue;
+function toByteArray (b64) {
+  var i, j, l, tmp, placeHolders, arr
+  var len = b64.length
+  placeHolders = placeHoldersCount(b64)
 
-    var kpX = kp.getX();
-    var r = kpX.umod(this.n);
-    if (r.cmpn(0) === 0)
-      continue;
+  arr = new Arr(len * 3 / 4 - placeHolders)
 
-    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));
-    s = s.umod(this.n);
-    if (s.cmpn(0) === 0)
-      continue;
+  // if there are placeholders, only get up to the last complete 4 chars
+  l = placeHolders > 0 ? len - 4 : len
 
-    var recoveryParam = (kp.getY().isOdd() ? 1 : 0) |
-                        (kpX.cmp(r) !== 0 ? 2 : 0);
+  var L = 0
 
-    // Use complement of `s`, if it is > `n / 2`
-    if (options.canonical && s.cmp(this.nh) > 0) {
-      s = this.n.sub(s);
-      recoveryParam ^= 1;
-    }
+  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+    arr[L++] = (tmp >> 16) & 0xFF
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
 
-    return new Signature({ r: r, s: s, recoveryParam: recoveryParam });
+  if (placeHolders === 2) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[L++] = tmp & 0xFF
+  } else if (placeHolders === 1) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
   }
-};
 
-EC.prototype.verify = function verify(msg, signature, key, enc) {
-  msg = this._truncateToN(new BN(msg, 16));
-  key = this.keyFromPublic(key, enc);
-  signature = new Signature(signature, 'hex');
+  return arr
+}
 
-  // Perform primitive values validation
-  var r = signature.r;
-  var s = signature.s;
-  if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0)
-    return false;
-  if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0)
-    return false;
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+}
 
-  // Validate signature
-  var sinv = s.invm(this.n);
-  var u1 = sinv.mul(msg).umod(this.n);
-  var u2 = sinv.mul(r).umod(this.n);
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
 
-  if (!this.curve._maxwellTrick) {
-    var p = this.g.mulAdd(u1, key.getPublic(), u2);
-    if (p.isInfinity())
-      return false;
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var output = ''
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
 
-    return p.getX().umod(this.n).cmp(r) === 0;
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
   }
 
-  // NOTE: Greg Maxwell's trick, inspired by:
-  // https://git.io/vad3K
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    output += lookup[tmp >> 2]
+    output += lookup[(tmp << 4) & 0x3F]
+    output += '=='
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+    output += lookup[tmp >> 10]
+    output += lookup[(tmp >> 4) & 0x3F]
+    output += lookup[(tmp << 2) & 0x3F]
+    output += '='
+  }
 
-  var p = this.g.jmulAdd(u1, key.getPublic(), u2);
-  if (p.isInfinity())
-    return false;
+  parts.push(output)
 
-  // Compare `p.x` of Jacobian point with `r`,
-  // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the
-  // inverse of `p.z^2`
-  return p.eqXToP(r);
-};
+  return parts.join('')
+}
 
-EC.prototype.recoverPubKey = function(msg, signature, j, enc) {
-  assert((3 & j) === j, 'The recovery param is more than two bits');
-  signature = new Signature(signature, enc);
+},{}],17:[function(require,module,exports){
+(function (module, exports) {
+  'use strict';
 
-  var n = this.n;
-  var e = new BN(msg);
-  var r = signature.r;
-  var s = signature.s;
+  // Utils
+  function assert (val, msg) {
+    if (!val) throw new Error(msg || 'Assertion failed');
+  }
 
-  // A set LSB signifies that the y-coordinate is odd
-  var isYOdd = j & 1;
-  var isSecondKey = j >> 1;
-  if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey)
-    throw new Error('Unable to find sencond key candinate');
+  // Could use `inherits` module, but don't want to move from single file
+  // architecture yet.
+  function inherits (ctor, superCtor) {
+    ctor.super_ = superCtor;
+    var TempCtor = function () {};
+    TempCtor.prototype = superCtor.prototype;
+    ctor.prototype = new TempCtor();
+    ctor.prototype.constructor = ctor;
+  }
 
-  // 1.1. Let x = r + jn.
-  if (isSecondKey)
-    r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);
-  else
-    r = this.curve.pointFromX(r, isYOdd);
+  // BN
 
-  var rInv = signature.r.invm(n);
-  var s1 = n.sub(e).mul(rInv).umod(n);
-  var s2 = s.mul(rInv).umod(n);
+  function BN (number, base, endian) {
+    if (BN.isBN(number)) {
+      return number;
+    }
 
-  // 1.6.1 Compute Q = r^-1 (sR -  eG)
-  //               Q = r^-1 (sR + -eG)
-  return this.g.mulAdd(s1, r, s2);
-};
+    this.negative = 0;
+    this.words = null;
+    this.length = 0;
 
-EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) {
-  signature = new Signature(signature, enc);
-  if (signature.recoveryParam !== null)
-    return signature.recoveryParam;
+    // Reduction context
+    this.red = null;
 
-  for (var i = 0; i < 4; i++) {
-    var Qprime;
-    try {
-      Qprime = this.recoverPubKey(e, signature, i);
-    } catch (e) {
-      continue;
-    }
+    if (number !== null) {
+      if (base === 'le' || base === 'be') {
+        endian = base;
+        base = 10;
+      }
 
-    if (Qprime.eq(Q))
-      return i;
+      this._init(number || 0, base || 10, endian || 'be');
+    }
+  }
+  if (typeof module === 'object') {
+    module.exports = BN;
+  } else {
+    exports.BN = BN;
   }
-  throw new Error('Unable to find valid recovery factor');
-};
 
-},{"../../elliptic":97,"./key":105,"./signature":106,"bn.js":81,"hmac-drbg":120}],105:[function(require,module,exports){
-'use strict';
+  BN.BN = BN;
+  BN.wordSize = 26;
 
-var BN = require('bn.js');
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
+  var Buffer;
+  try {
+    Buffer = require('buf' + 'fer').Buffer;
+  } catch (e) {
+  }
 
-function KeyPair(ec, options) {
-  this.ec = ec;
-  this.priv = null;
-  this.pub = null;
+  BN.isBN = function isBN (num) {
+    if (num instanceof BN) {
+      return true;
+    }
 
-  // KeyPair(ec, { priv: ..., pub: ... })
-  if (options.priv)
-    this._importPrivate(options.priv, options.privEnc);
-  if (options.pub)
-    this._importPublic(options.pub, options.pubEnc);
-}
-module.exports = KeyPair;
+    return num !== null && typeof num === 'object' &&
+      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
+  };
 
-KeyPair.fromPublic = function fromPublic(ec, pub, enc) {
-  if (pub instanceof KeyPair)
-    return pub;
+  BN.max = function max (left, right) {
+    if (left.cmp(right) > 0) return left;
+    return right;
+  };
 
-  return new KeyPair(ec, {
-    pub: pub,
-    pubEnc: enc
-  });
-};
+  BN.min = function min (left, right) {
+    if (left.cmp(right) < 0) return left;
+    return right;
+  };
 
-KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {
-  if (priv instanceof KeyPair)
-    return priv;
+  BN.prototype._init = function init (number, base, endian) {
+    if (typeof number === 'number') {
+      return this._initNumber(number, base, endian);
+    }
 
-  return new KeyPair(ec, {
-    priv: priv,
-    privEnc: enc
-  });
-};
+    if (typeof number === 'object') {
+      return this._initArray(number, base, endian);
+    }
 
-KeyPair.prototype.validate = function validate() {
-  var pub = this.getPublic();
+    if (base === 'hex') {
+      base = 16;
+    }
+    assert(base === (base | 0) && base >= 2 && base <= 36);
 
-  if (pub.isInfinity())
-    return { result: false, reason: 'Invalid public key' };
-  if (!pub.validate())
-    return { result: false, reason: 'Public key is not a point' };
-  if (!pub.mul(this.ec.curve.n).isInfinity())
-    return { result: false, reason: 'Public key * N != O' };
+    number = number.toString().replace(/\s+/g, '');
+    var start = 0;
+    if (number[0] === '-') {
+      start++;
+    }
 
-  return { result: true, reason: null };
-};
+    if (base === 16) {
+      this._parseHex(number, start);
+    } else {
+      this._parseBase(number, base, start);
+    }
 
-KeyPair.prototype.getPublic = function getPublic(compact, enc) {
-  // compact is optional argument
-  if (typeof compact === 'string') {
-    enc = compact;
-    compact = null;
-  }
+    if (number[0] === '-') {
+      this.negative = 1;
+    }
 
-  if (!this.pub)
-    this.pub = this.ec.g.mul(this.priv);
+    this.strip();
 
-  if (!enc)
-    return this.pub;
+    if (endian !== 'le') return;
 
-  return this.pub.encode(enc, compact);
-};
+    this._initArray(this.toArray(), base, endian);
+  };
 
-KeyPair.prototype.getPrivate = function getPrivate(enc) {
-  if (enc === 'hex')
-    return this.priv.toString(16, 2);
-  else
-    return this.priv;
-};
+  BN.prototype._initNumber = function _initNumber (number, base, endian) {
+    if (number < 0) {
+      this.negative = 1;
+      number = -number;
+    }
+    if (number < 0x4000000) {
+      this.words = [ number & 0x3ffffff ];
+      this.length = 1;
+    } else if (number < 0x10000000000000) {
+      this.words = [
+        number & 0x3ffffff,
+        (number / 0x4000000) & 0x3ffffff
+      ];
+      this.length = 2;
+    } else {
+      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+      this.words = [
+        number & 0x3ffffff,
+        (number / 0x4000000) & 0x3ffffff,
+        1
+      ];
+      this.length = 3;
+    }
 
-KeyPair.prototype._importPrivate = function _importPrivate(key, enc) {
-  this.priv = new BN(key, enc || 16);
+    if (endian !== 'le') return;
 
-  // Ensure that the priv won't be bigger than n, otherwise we may fail
-  // in fixed multiplication method
-  this.priv = this.priv.umod(this.ec.curve.n);
-};
+    // Reverse the bytes
+    this._initArray(this.toArray(), base, endian);
+  };
 
-KeyPair.prototype._importPublic = function _importPublic(key, enc) {
-  if (key.x || key.y) {
-    // Montgomery points only have an `x` coordinate.
-    // Weierstrass/Edwards points on the other hand have both `x` and
-    // `y` coordinates.
-    if (this.ec.curve.type === 'mont') {
-      assert(key.x, 'Need x coordinate');
-    } else if (this.ec.curve.type === 'short' ||
-               this.ec.curve.type === 'edwards') {
-      assert(key.x && key.y, 'Need both x and y coordinate');
+  BN.prototype._initArray = function _initArray (number, base, endian) {
+    // Perhaps a Uint8Array
+    assert(typeof number.length === 'number');
+    if (number.length <= 0) {
+      this.words = [ 0 ];
+      this.length = 1;
+      return this;
     }
-    this.pub = this.ec.curve.point(key.x, key.y);
-    return;
-  }
-  this.pub = this.ec.curve.decodePoint(key, enc);
-};
 
-// ECDH
-KeyPair.prototype.derive = function derive(pub) {
-  return pub.mul(this.priv).getX();
-};
+    this.length = Math.ceil(number.length / 3);
+    this.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      this.words[i] = 0;
+    }
 
-// ECDSA
-KeyPair.prototype.sign = function sign(msg, enc, options) {
-  return this.ec.sign(msg, this, enc, options);
-};
+    var j, w;
+    var off = 0;
+    if (endian === 'be') {
+      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
+        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+        this.words[j] |= (w << off) & 0x3ffffff;
+        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+        off += 24;
+        if (off >= 26) {
+          off -= 26;
+          j++;
+        }
+      }
+    } else if (endian === 'le') {
+      for (i = 0, j = 0; i < number.length; i += 3) {
+        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+        this.words[j] |= (w << off) & 0x3ffffff;
+        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+        off += 24;
+        if (off >= 26) {
+          off -= 26;
+          j++;
+        }
+      }
+    }
+    return this.strip();
+  };
 
-KeyPair.prototype.verify = function verify(msg, signature) {
-  return this.ec.verify(msg, signature, this);
-};
+  function parseHex (str, start, end) {
+    var r = 0;
+    var len = Math.min(str.length, end);
+    for (var i = start; i < len; i++) {
+      var c = str.charCodeAt(i) - 48;
 
-KeyPair.prototype.inspect = function inspect() {
-  return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) +
-         ' pub: ' + (this.pub && this.pub.inspect()) + ' >';
-};
+      r <<= 4;
 
-},{"../../elliptic":97,"bn.js":81}],106:[function(require,module,exports){
-'use strict';
+      // 'a' - 'f'
+      if (c >= 49 && c <= 54) {
+        r |= c - 49 + 0xa;
 
-var BN = require('bn.js');
+      // 'A' - 'F'
+      } else if (c >= 17 && c <= 22) {
+        r |= c - 17 + 0xa;
 
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
+      // '0' - '9'
+      } else {
+        r |= c & 0xf;
+      }
+    }
+    return r;
+  }
 
-function Signature(options, enc) {
-  if (options instanceof Signature)
-    return options;
+  BN.prototype._parseHex = function _parseHex (number, start) {
+    // Create possibly bigger array to ensure that it fits the number
+    this.length = Math.ceil((number.length - start) / 6);
+    this.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      this.words[i] = 0;
+    }
 
-  if (this._importDER(options, enc))
-    return;
+    var j, w;
+    // Scan 24-bit chunks and add them to the number
+    var off = 0;
+    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
+      w = parseHex(number, i, i + 6);
+      this.words[j] |= (w << off) & 0x3ffffff;
+      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
+      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+      off += 24;
+      if (off >= 26) {
+        off -= 26;
+        j++;
+      }
+    }
+    if (i + 6 !== start) {
+      w = parseHex(number, start, i + 6);
+      this.words[j] |= (w << off) & 0x3ffffff;
+      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+    }
+    this.strip();
+  };
 
-  assert(options.r && options.s, 'Signature without r or s');
-  this.r = new BN(options.r, 16);
-  this.s = new BN(options.s, 16);
-  if (options.recoveryParam === undefined)
-    this.recoveryParam = null;
-  else
-    this.recoveryParam = options.recoveryParam;
-}
-module.exports = Signature;
+  function parseBase (str, start, end, mul) {
+    var r = 0;
+    var len = Math.min(str.length, end);
+    for (var i = start; i < len; i++) {
+      var c = str.charCodeAt(i) - 48;
 
-function Position() {
-  this.place = 0;
-}
+      r *= mul;
 
-function getLength(buf, p) {
-  var initial = buf[p.place++];
-  if (!(initial & 0x80)) {
-    return initial;
-  }
-  var octetLen = initial & 0xf;
-  var val = 0;
-  for (var i = 0, off = p.place; i < octetLen; i++, off++) {
-    val <<= 8;
-    val |= buf[off];
-  }
-  p.place = off;
-  return val;
-}
+      // 'a'
+      if (c >= 49) {
+        r += c - 49 + 0xa;
 
-function rmPadding(buf) {
-  var i = 0;
-  var len = buf.length - 1;
-  while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {
-    i++;
-  }
-  if (i === 0) {
-    return buf;
-  }
-  return buf.slice(i);
-}
+      // 'A'
+      } else if (c >= 17) {
+        r += c - 17 + 0xa;
 
-Signature.prototype._importDER = function _importDER(data, enc) {
-  data = utils.toArray(data, enc);
-  var p = new Position();
-  if (data[p.place++] !== 0x30) {
-    return false;
-  }
-  var len = getLength(data, p);
-  if ((len + p.place) !== data.length) {
-    return false;
-  }
-  if (data[p.place++] !== 0x02) {
-    return false;
-  }
-  var rlen = getLength(data, p);
-  var r = data.slice(p.place, rlen + p.place);
-  p.place += rlen;
-  if (data[p.place++] !== 0x02) {
-    return false;
-  }
-  var slen = getLength(data, p);
-  if (data.length !== slen + p.place) {
-    return false;
-  }
-  var s = data.slice(p.place, slen + p.place);
-  if (r[0] === 0 && (r[1] & 0x80)) {
-    r = r.slice(1);
-  }
-  if (s[0] === 0 && (s[1] & 0x80)) {
-    s = s.slice(1);
+      // '0' - '9'
+      } else {
+        r += c;
+      }
+    }
+    return r;
   }
 
-  this.r = new BN(r);
-  this.s = new BN(s);
-  this.recoveryParam = null;
-
-  return true;
-};
+  BN.prototype._parseBase = function _parseBase (number, base, start) {
+    // Initialize as zero
+    this.words = [ 0 ];
+    this.length = 1;
 
-function constructLength(arr, len) {
-  if (len < 0x80) {
-    arr.push(len);
-    return;
-  }
-  var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);
-  arr.push(octets | 0x80);
-  while (--octets) {
-    arr.push((len >>> (octets << 3)) & 0xff);
-  }
-  arr.push(len);
-}
+    // Find length of limb in base
+    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
+      limbLen++;
+    }
+    limbLen--;
+    limbPow = (limbPow / base) | 0;
 
-Signature.prototype.toDER = function toDER(enc) {
-  var r = this.r.toArray();
-  var s = this.s.toArray();
+    var total = number.length - start;
+    var mod = total % limbLen;
+    var end = Math.min(total, total - mod) + start;
 
-  // Pad values
-  if (r[0] & 0x80)
-    r = [ 0 ].concat(r);
-  // Pad values
-  if (s[0] & 0x80)
-    s = [ 0 ].concat(s);
+    var word = 0;
+    for (var i = start; i < end; i += limbLen) {
+      word = parseBase(number, i, i + limbLen, base);
 
-  r = rmPadding(r);
-  s = rmPadding(s);
+      this.imuln(limbPow);
+      if (this.words[0] + word < 0x4000000) {
+        this.words[0] += word;
+      } else {
+        this._iaddn(word);
+      }
+    }
 
-  while (!s[0] && !(s[1] & 0x80)) {
-    s = s.slice(1);
-  }
-  var arr = [ 0x02 ];
-  constructLength(arr, r.length);
-  arr = arr.concat(r);
-  arr.push(0x02);
-  constructLength(arr, s.length);
-  var backHalf = arr.concat(s);
-  var res = [ 0x30 ];
-  constructLength(res, backHalf.length);
-  res = res.concat(backHalf);
-  return utils.encode(res, enc);
-};
+    if (mod !== 0) {
+      var pow = 1;
+      word = parseBase(number, i, number.length, base);
 
-},{"../../elliptic":97,"bn.js":81}],107:[function(require,module,exports){
-'use strict';
+      for (i = 0; i < mod; i++) {
+        pow *= base;
+      }
 
-var hash = require('hash.js');
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
-var parseBytes = utils.parseBytes;
-var KeyPair = require('./key');
-var Signature = require('./signature');
+      this.imuln(pow);
+      if (this.words[0] + word < 0x4000000) {
+        this.words[0] += word;
+      } else {
+        this._iaddn(word);
+      }
+    }
+  };
 
-function EDDSA(curve) {
-  assert(curve === 'ed25519', 'only tested with ed25519 so far');
+  BN.prototype.copy = function copy (dest) {
+    dest.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      dest.words[i] = this.words[i];
+    }
+    dest.length = this.length;
+    dest.negative = this.negative;
+    dest.red = this.red;
+  };
 
-  if (!(this instanceof EDDSA))
-    return new EDDSA(curve);
+  BN.prototype.clone = function clone () {
+    var r = new BN(null);
+    this.copy(r);
+    return r;
+  };
 
-  var curve = elliptic.curves[curve].curve;
-  this.curve = curve;
-  this.g = curve.g;
-  this.g.precompute(curve.n.bitLength() + 1);
+  BN.prototype._expand = function _expand (size) {
+    while (this.length < size) {
+      this.words[this.length++] = 0;
+    }
+    return this;
+  };
 
-  this.pointClass = curve.point().constructor;
-  this.encodingLength = Math.ceil(curve.n.bitLength() / 8);
-  this.hash = hash.sha512;
-}
+  // Remove leading `0` from `this`
+  BN.prototype.strip = function strip () {
+    while (this.length > 1 && this.words[this.length - 1] === 0) {
+      this.length--;
+    }
+    return this._normSign();
+  };
 
-module.exports = EDDSA;
+  BN.prototype._normSign = function _normSign () {
+    // -0 = 0
+    if (this.length === 1 && this.words[0] === 0) {
+      this.negative = 0;
+    }
+    return this;
+  };
 
-/**
-* @param {Array|String} message - message bytes
-* @param {Array|String|KeyPair} secret - secret bytes or a keypair
-* @returns {Signature} - signature
-*/
-EDDSA.prototype.sign = function sign(message, secret) {
-  message = parseBytes(message);
-  var key = this.keyFromSecret(secret);
-  var r = this.hashInt(key.messagePrefix(), message);
-  var R = this.g.mul(r);
-  var Rencoded = this.encodePoint(R);
-  var s_ = this.hashInt(Rencoded, key.pubBytes(), message)
-               .mul(key.priv());
-  var S = r.add(s_).umod(this.curve.n);
-  return this.makeSignature({ R: R, S: S, Rencoded: Rencoded });
-};
+  BN.prototype.inspect = function inspect () {
+    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+  };
 
-/**
-* @param {Array} message - message bytes
-* @param {Array|String|Signature} sig - sig bytes
-* @param {Array|String|Point|KeyPair} pub - public key
-* @returns {Boolean} - true if public key matches sig of message
-*/
-EDDSA.prototype.verify = function verify(message, sig, pub) {
-  message = parseBytes(message);
-  sig = this.makeSignature(sig);
-  var key = this.keyFromPublic(pub);
-  var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
-  var SG = this.g.mul(sig.S());
-  var RplusAh = sig.R().add(key.pub().mul(h));
-  return RplusAh.eq(SG);
-};
+  /*
 
-EDDSA.prototype.hashInt = function hashInt() {
-  var hash = this.hash();
-  for (var i = 0; i < arguments.length; i++)
-    hash.update(arguments[i]);
-  return utils.intFromLE(hash.digest()).umod(this.curve.n);
-};
+  var zeros = [];
+  var groupSizes = [];
+  var groupBases = [];
 
-EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {
-  return KeyPair.fromPublic(this, pub);
-};
+  var s = '';
+  var i = -1;
+  while (++i < BN.wordSize) {
+    zeros[i] = s;
+    s += '0';
+  }
+  groupSizes[0] = 0;
+  groupSizes[1] = 0;
+  groupBases[0] = 0;
+  groupBases[1] = 0;
+  var base = 2 - 1;
+  while (++base < 36 + 1) {
+    var groupSize = 0;
+    var groupBase = 1;
+    while (groupBase < (1 << BN.wordSize) / base) {
+      groupBase *= base;
+      groupSize += 1;
+    }
+    groupSizes[base] = groupSize;
+    groupBases[base] = groupBase;
+  }
 
-EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {
-  return KeyPair.fromSecret(this, secret);
-};
+  */
 
-EDDSA.prototype.makeSignature = function makeSignature(sig) {
-  if (sig instanceof Signature)
-    return sig;
-  return new Signature(this, sig);
-};
+  var zeros = [
+    '',
+    '0',
+    '00',
+    '000',
+    '0000',
+    '00000',
+    '000000',
+    '0000000',
+    '00000000',
+    '000000000',
+    '0000000000',
+    '00000000000',
+    '000000000000',
+    '0000000000000',
+    '00000000000000',
+    '000000000000000',
+    '0000000000000000',
+    '00000000000000000',
+    '000000000000000000',
+    '0000000000000000000',
+    '00000000000000000000',
+    '000000000000000000000',
+    '0000000000000000000000',
+    '00000000000000000000000',
+    '000000000000000000000000',
+    '0000000000000000000000000'
+  ];
 
-/**
-* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2
-*
-* EDDSA defines methods for encoding and decoding points and integers. These are
-* helper convenience methods, that pass along to utility functions implied
-* parameters.
-*
-*/
-EDDSA.prototype.encodePoint = function encodePoint(point) {
-  var enc = point.getY().toArray('le', this.encodingLength);
-  enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;
-  return enc;
-};
+  var groupSizes = [
+    0, 0,
+    25, 16, 12, 11, 10, 9, 8,
+    8, 7, 7, 7, 7, 6, 6,
+    6, 6, 6, 6, 6, 5, 5,
+    5, 5, 5, 5, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5
+  ];
 
-EDDSA.prototype.decodePoint = function decodePoint(bytes) {
-  bytes = utils.parseBytes(bytes);
+  var groupBases = [
+    0, 0,
+    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+  ];
 
-  var lastIx = bytes.length - 1;
-  var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);
-  var xIsOdd = (bytes[lastIx] & 0x80) !== 0;
+  BN.prototype.toString = function toString (base, padding) {
+    base = base || 10;
+    padding = padding | 0 || 1;
 
-  var y = utils.intFromLE(normed);
-  return this.curve.pointFromY(y, xIsOdd);
-};
+    var out;
+    if (base === 16 || base === 'hex') {
+      out = '';
+      var off = 0;
+      var carry = 0;
+      for (var i = 0; i < this.length; i++) {
+        var w = this.words[i];
+        var word = (((w << off) | carry) & 0xffffff).toString(16);
+        carry = (w >>> (24 - off)) & 0xffffff;
+        if (carry !== 0 || i !== this.length - 1) {
+          out = zeros[6 - word.length] + word + out;
+        } else {
+          out = word + out;
+        }
+        off += 2;
+        if (off >= 26) {
+          off -= 26;
+          i--;
+        }
+      }
+      if (carry !== 0) {
+        out = carry.toString(16) + out;
+      }
+      while (out.length % padding !== 0) {
+        out = '0' + out;
+      }
+      if (this.negative !== 0) {
+        out = '-' + out;
+      }
+      return out;
+    }
 
-EDDSA.prototype.encodeInt = function encodeInt(num) {
-  return num.toArray('le', this.encodingLength);
-};
+    if (base === (base | 0) && base >= 2 && base <= 36) {
+      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+      var groupSize = groupSizes[base];
+      // var groupBase = Math.pow(base, groupSize);
+      var groupBase = groupBases[base];
+      out = '';
+      var c = this.clone();
+      c.negative = 0;
+      while (!c.isZero()) {
+        var r = c.modn(groupBase).toString(base);
+        c = c.idivn(groupBase);
 
-EDDSA.prototype.decodeInt = function decodeInt(bytes) {
-  return utils.intFromLE(bytes);
-};
+        if (!c.isZero()) {
+          out = zeros[groupSize - r.length] + r + out;
+        } else {
+          out = r + out;
+        }
+      }
+      if (this.isZero()) {
+        out = '0' + out;
+      }
+      while (out.length % padding !== 0) {
+        out = '0' + out;
+      }
+      if (this.negative !== 0) {
+        out = '-' + out;
+      }
+      return out;
+    }
 
-EDDSA.prototype.isPoint = function isPoint(val) {
-  return val instanceof this.pointClass;
-};
+    assert(false, 'Base should be between 2 and 36');
+  };
 
-},{"../../elliptic":97,"./key":108,"./signature":109,"hash.js":114}],108:[function(require,module,exports){
-'use strict';
+  BN.prototype.toNumber = function toNumber () {
+    var ret = this.words[0];
+    if (this.length === 2) {
+      ret += this.words[1] * 0x4000000;
+    } else if (this.length === 3 && this.words[2] === 0x01) {
+      // NOTE: at this stage it is known that the top bit is set
+      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
+    } else if (this.length > 2) {
+      assert(false, 'Number can only safely store up to 53 bits');
+    }
+    return (this.negative !== 0) ? -ret : ret;
+  };
 
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
-var parseBytes = utils.parseBytes;
-var cachedProperty = utils.cachedProperty;
+  BN.prototype.toJSON = function toJSON () {
+    return this.toString(16);
+  };
 
-/**
-* @param {EDDSA} eddsa - instance
-* @param {Object} params - public/private key parameters
-*
-* @param {Array<Byte>} [params.secret] - secret seed bytes
-* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)
-* @param {Array<Byte>} [params.pub] - public key point encoded as bytes
-*
-*/
-function KeyPair(eddsa, params) {
-  this.eddsa = eddsa;
-  this._secret = parseBytes(params.secret);
-  if (eddsa.isPoint(params.pub))
-    this._pub = params.pub;
-  else
-    this._pubBytes = parseBytes(params.pub);
-}
+  BN.prototype.toBuffer = function toBuffer (endian, length) {
+    assert(typeof Buffer !== 'undefined');
+    return this.toArrayLike(Buffer, endian, length);
+  };
 
-KeyPair.fromPublic = function fromPublic(eddsa, pub) {
-  if (pub instanceof KeyPair)
-    return pub;
-  return new KeyPair(eddsa, { pub: pub });
-};
+  BN.prototype.toArray = function toArray (endian, length) {
+    return this.toArrayLike(Array, endian, length);
+  };
 
-KeyPair.fromSecret = function fromSecret(eddsa, secret) {
-  if (secret instanceof KeyPair)
-    return secret;
-  return new KeyPair(eddsa, { secret: secret });
-};
+  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
+    var byteLength = this.byteLength();
+    var reqLength = length || Math.max(1, byteLength);
+    assert(byteLength <= reqLength, 'byte array longer than desired length');
+    assert(reqLength > 0, 'Requested array length <= 0');
 
-KeyPair.prototype.secret = function secret() {
-  return this._secret;
-};
+    this.strip();
+    var littleEndian = endian === 'le';
+    var res = new ArrayType(reqLength);
 
-cachedProperty(KeyPair, 'pubBytes', function pubBytes() {
-  return this.eddsa.encodePoint(this.pub());
-});
+    var b, i;
+    var q = this.clone();
+    if (!littleEndian) {
+      // Assume big-endian
+      for (i = 0; i < reqLength - byteLength; i++) {
+        res[i] = 0;
+      }
 
-cachedProperty(KeyPair, 'pub', function pub() {
-  if (this._pubBytes)
-    return this.eddsa.decodePoint(this._pubBytes);
-  return this.eddsa.g.mul(this.priv());
-});
+      for (i = 0; !q.isZero(); i++) {
+        b = q.andln(0xff);
+        q.iushrn(8);
 
-cachedProperty(KeyPair, 'privBytes', function privBytes() {
-  var eddsa = this.eddsa;
-  var hash = this.hash();
-  var lastIx = eddsa.encodingLength - 1;
+        res[reqLength - i - 1] = b;
+      }
+    } else {
+      for (i = 0; !q.isZero(); i++) {
+        b = q.andln(0xff);
+        q.iushrn(8);
 
-  var a = hash.slice(0, eddsa.encodingLength);
-  a[0] &= 248;
-  a[lastIx] &= 127;
-  a[lastIx] |= 64;
+        res[i] = b;
+      }
 
-  return a;
-});
+      for (; i < reqLength; i++) {
+        res[i] = 0;
+      }
+    }
 
-cachedProperty(KeyPair, 'priv', function priv() {
-  return this.eddsa.decodeInt(this.privBytes());
-});
+    return res;
+  };
 
-cachedProperty(KeyPair, 'hash', function hash() {
-  return this.eddsa.hash().update(this.secret()).digest();
-});
+  if (Math.clz32) {
+    BN.prototype._countBits = function _countBits (w) {
+      return 32 - Math.clz32(w);
+    };
+  } else {
+    BN.prototype._countBits = function _countBits (w) {
+      var t = w;
+      var r = 0;
+      if (t >= 0x1000) {
+        r += 13;
+        t >>>= 13;
+      }
+      if (t >= 0x40) {
+        r += 7;
+        t >>>= 7;
+      }
+      if (t >= 0x8) {
+        r += 4;
+        t >>>= 4;
+      }
+      if (t >= 0x02) {
+        r += 2;
+        t >>>= 2;
+      }
+      return r + t;
+    };
+  }
 
-cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() {
-  return this.hash().slice(this.eddsa.encodingLength);
-});
+  BN.prototype._zeroBits = function _zeroBits (w) {
+    // Short-cut
+    if (w === 0) return 26;
 
-KeyPair.prototype.sign = function sign(message) {
-  assert(this._secret, 'KeyPair can only verify');
-  return this.eddsa.sign(message, this);
-};
+    var t = w;
+    var r = 0;
+    if ((t & 0x1fff) === 0) {
+      r += 13;
+      t >>>= 13;
+    }
+    if ((t & 0x7f) === 0) {
+      r += 7;
+      t >>>= 7;
+    }
+    if ((t & 0xf) === 0) {
+      r += 4;
+      t >>>= 4;
+    }
+    if ((t & 0x3) === 0) {
+      r += 2;
+      t >>>= 2;
+    }
+    if ((t & 0x1) === 0) {
+      r++;
+    }
+    return r;
+  };
 
-KeyPair.prototype.verify = function verify(message, sig) {
-  return this.eddsa.verify(message, sig, this);
-};
+  // Return number of used bits in a BN
+  BN.prototype.bitLength = function bitLength () {
+    var w = this.words[this.length - 1];
+    var hi = this._countBits(w);
+    return (this.length - 1) * 26 + hi;
+  };
 
-KeyPair.prototype.getSecret = function getSecret(enc) {
-  assert(this._secret, 'KeyPair is public only');
-  return utils.encode(this.secret(), enc);
-};
+  function toBitArray (num) {
+    var w = new Array(num.bitLength());
 
-KeyPair.prototype.getPublic = function getPublic(enc) {
-  return utils.encode(this.pubBytes(), enc);
-};
+    for (var bit = 0; bit < w.length; bit++) {
+      var off = (bit / 26) | 0;
+      var wbit = bit % 26;
 
-module.exports = KeyPair;
+      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
+    }
 
-},{"../../elliptic":97}],109:[function(require,module,exports){
-'use strict';
+    return w;
+  }
 
-var BN = require('bn.js');
-var elliptic = require('../../elliptic');
-var utils = elliptic.utils;
-var assert = utils.assert;
-var cachedProperty = utils.cachedProperty;
-var parseBytes = utils.parseBytes;
+  // Number of trailing zero bits
+  BN.prototype.zeroBits = function zeroBits () {
+    if (this.isZero()) return 0;
 
-/**
-* @param {EDDSA} eddsa - eddsa instance
-* @param {Array<Bytes>|Object} sig -
-* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes
-* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes
-* @param {Array<Bytes>} [sig.Rencoded] - R point encoded
-* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded
-*/
-function Signature(eddsa, sig) {
-  this.eddsa = eddsa;
+    var r = 0;
+    for (var i = 0; i < this.length; i++) {
+      var b = this._zeroBits(this.words[i]);
+      r += b;
+      if (b !== 26) break;
+    }
+    return r;
+  };
 
-  if (typeof sig !== 'object')
-    sig = parseBytes(sig);
+  BN.prototype.byteLength = function byteLength () {
+    return Math.ceil(this.bitLength() / 8);
+  };
 
-  if (Array.isArray(sig)) {
-    sig = {
-      R: sig.slice(0, eddsa.encodingLength),
-      S: sig.slice(eddsa.encodingLength)
-    };
-  }
+  BN.prototype.toTwos = function toTwos (width) {
+    if (this.negative !== 0) {
+      return this.abs().inotn(width).iaddn(1);
+    }
+    return this.clone();
+  };
 
-  assert(sig.R && sig.S, 'Signature without R or S');
+  BN.prototype.fromTwos = function fromTwos (width) {
+    if (this.testn(width - 1)) {
+      return this.notn(width).iaddn(1).ineg();
+    }
+    return this.clone();
+  };
 
-  if (eddsa.isPoint(sig.R))
-    this._R = sig.R;
-  if (sig.S instanceof BN)
-    this._S = sig.S;
+  BN.prototype.isNeg = function isNeg () {
+    return this.negative !== 0;
+  };
 
-  this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;
-  this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;
-}
+  // Return negative clone of `this`
+  BN.prototype.neg = function neg () {
+    return this.clone().ineg();
+  };
 
-cachedProperty(Signature, 'S', function S() {
-  return this.eddsa.decodeInt(this.Sencoded());
-});
+  BN.prototype.ineg = function ineg () {
+    if (!this.isZero()) {
+      this.negative ^= 1;
+    }
 
-cachedProperty(Signature, 'R', function R() {
-  return this.eddsa.decodePoint(this.Rencoded());
-});
+    return this;
+  };
 
-cachedProperty(Signature, 'Rencoded', function Rencoded() {
-  return this.eddsa.encodePoint(this.R());
-});
+  // Or `num` with `this` in-place
+  BN.prototype.iuor = function iuor (num) {
+    while (this.length < num.length) {
+      this.words[this.length++] = 0;
+    }
 
-cachedProperty(Signature, 'Sencoded', function Sencoded() {
-  return this.eddsa.encodeInt(this.S());
-});
+    for (var i = 0; i < num.length; i++) {
+      this.words[i] = this.words[i] | num.words[i];
+    }
 
-Signature.prototype.toBytes = function toBytes() {
-  return this.Rencoded().concat(this.Sencoded());
-};
+    return this.strip();
+  };
 
-Signature.prototype.toHex = function toHex() {
-  return utils.encode(this.toBytes(), 'hex').toUpperCase();
-};
+  BN.prototype.ior = function ior (num) {
+    assert((this.negative | num.negative) === 0);
+    return this.iuor(num);
+  };
 
-module.exports = Signature;
-
-},{"../../elliptic":97,"bn.js":81}],110:[function(require,module,exports){
-module.exports = {
-  doubles: {
-    step: 4,
-    points: [
-      [
-        'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a',
-        'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'
-      ],
-      [
-        '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508',
-        '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'
-      ],
-      [
-        '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739',
-        'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'
-      ],
-      [
-        '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640',
-        '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'
-      ],
-      [
-        '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c',
-        '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'
-      ],
-      [
-        '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda',
-        '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f'
-      ],
-      [
-        'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa',
-        '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999'
-      ],
-      [
-        '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0',
-        'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09'
-      ],
-      [
-        'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d',
-        '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d'
-      ],
-      [
-        'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d',
-        'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088'
-      ],
-      [
-        'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1',
-        '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d'
-      ],
-      [
-        '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0',
-        '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8'
-      ],
-      [
-        '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047',
-        '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a'
-      ],
-      [
-        '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862',
-        '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453'
-      ],
-      [
-        '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7',
-        '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160'
-      ],
-      [
-        '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd',
-        '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0'
-      ],
-      [
-        '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83',
-        '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6'
-      ],
-      [
-        '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a',
-        '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589'
-      ],
-      [
-        '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8',
-        'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17'
-      ],
-      [
-        'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d',
-        '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda'
-      ],
-      [
-        'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725',
-        '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd'
-      ],
-      [
-        '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754',
-        '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2'
-      ],
-      [
-        '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c',
-        '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6'
-      ],
-      [
-        'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6',
-        '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f'
-      ],
-      [
-        '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39',
-        'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01'
-      ],
-      [
-        'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891',
-        '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3'
-      ],
-      [
-        'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b',
-        'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f'
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-  }
-};
-
-},{}],111:[function(require,module,exports){
-'use strict';
-
-var utils = exports;
-var BN = require('bn.js');
-var minAssert = require('minimalistic-assert');
-var minUtils = require('minimalistic-crypto-utils');
-
-utils.assert = minAssert;
-utils.toArray = minUtils.toArray;
-utils.zero2 = minUtils.zero2;
-utils.toHex = minUtils.toHex;
-utils.encode = minUtils.encode;
-
-// Represent num in a w-NAF form
-function getNAF(num, w) {
-  var naf = [];
-  var ws = 1 << (w + 1);
-  var k = num.clone();
-  while (k.cmpn(1) >= 0) {
-    var z;
-    if (k.isOdd()) {
-      var mod = k.andln(ws - 1);
-      if (mod > (ws >> 1) - 1)
-        z = (ws >> 1) - mod;
-      else
-        z = mod;
-      k.isubn(z);
-    } else {
-      z = 0;
-    }
-    naf.push(z);
-
-    // Optimization, shift by word if possible
-    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
-    for (var i = 1; i < shift; i++)
-      naf.push(0);
-    k.iushrn(shift);
-  }
-
-  return naf;
-}
-utils.getNAF = getNAF;
-
-// Represent k1, k2 in a Joint Sparse Form
-function getJSF(k1, k2) {
-  var jsf = [
-    [],
-    []
-  ];
-
-  k1 = k1.clone();
-  k2 = k2.clone();
-  var d1 = 0;
-  var d2 = 0;
-  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {
-
-    // First phase
-    var m14 = (k1.andln(3) + d1) & 3;
-    var m24 = (k2.andln(3) + d2) & 3;
-    if (m14 === 3)
-      m14 = -1;
-    if (m24 === 3)
-      m24 = -1;
-    var u1;
-    if ((m14 & 1) === 0) {
-      u1 = 0;
-    } else {
-      var m8 = (k1.andln(7) + d1) & 7;
-      if ((m8 === 3 || m8 === 5) && m24 === 2)
-        u1 = -m14;
-      else
-        u1 = m14;
-    }
-    jsf[0].push(u1);
-
-    var u2;
-    if ((m24 & 1) === 0) {
-      u2 = 0;
-    } else {
-      var m8 = (k2.andln(7) + d2) & 7;
-      if ((m8 === 3 || m8 === 5) && m14 === 2)
-        u2 = -m24;
-      else
-        u2 = m24;
-    }
-    jsf[1].push(u2);
-
-    // Second phase
-    if (2 * d1 === u1 + 1)
-      d1 = 1 - d1;
-    if (2 * d2 === u2 + 1)
-      d2 = 1 - d2;
-    k1.iushrn(1);
-    k2.iushrn(1);
-  }
-
-  return jsf;
-}
-utils.getJSF = getJSF;
-
-function cachedProperty(obj, name, computer) {
-  var key = '_' + name;
-  obj.prototype[name] = function cachedProperty() {
-    return this[key] !== undefined ? this[key] :
-           this[key] = computer.call(this);
-  };
-}
-utils.cachedProperty = cachedProperty;
-
-function parseBytes(bytes) {
-  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
-                                     bytes;
-}
-utils.parseBytes = parseBytes;
-
-function intFromLE(bytes) {
-  return new BN(bytes, 'hex', 'le');
-}
-utils.intFromLE = intFromLE;
-
-
-},{"bn.js":81,"minimalistic-assert":123,"minimalistic-crypto-utils":124}],112:[function(require,module,exports){
-module.exports={
-  "_args": [
-    [
-      "elliptic",
-      "/home/ian/git/bitcoin/bitcoinjs-lib-browser"
-    ]
-  ],
-  "_from": "elliptic@latest",
-  "_id": "elliptic@6.4.0",
-  "_inCache": true,
-  "_installable": true,
-  "_location": "/elliptic",
-  "_nodeVersion": "7.0.0",
-  "_npmOperationalInternal": {
-    "host": "packages-18-east.internal.npmjs.com",
-    "tmp": "tmp/elliptic-6.4.0.tgz_1487798866428_0.30510620190761983"
-  },
-  "_npmUser": {
-    "email": "fedor@indutny.com",
-    "name": "indutny"
-  },
-  "_npmVersion": "3.10.8",
-  "_phantomChildren": {},
-  "_requested": {
-    "name": "elliptic",
-    "raw": "elliptic",
-    "rawSpec": "",
-    "scope": null,
-    "spec": "latest",
-    "type": "tag"
-  },
-  "_requiredBy": [
-    "#USER"
-  ],
-  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz",
-  "_shasum": "cac9af8762c85836187003c8dfe193e5e2eae5df",
-  "_shrinkwrap": null,
-  "_spec": "elliptic",
-  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser",
-  "author": {
-    "email": "fedor@indutny.com",
-    "name": "Fedor Indutny"
-  },
-  "bugs": {
-    "url": "https://github.com/indutny/elliptic/issues"
-  },
-  "dependencies": {
-    "bn.js": "^4.4.0",
-    "brorand": "^1.0.1",
-    "hash.js": "^1.0.0",
-    "hmac-drbg": "^1.0.0",
-    "inherits": "^2.0.1",
-    "minimalistic-assert": "^1.0.0",
-    "minimalistic-crypto-utils": "^1.0.0"
-  },
-  "description": "EC cryptography",
-  "devDependencies": {
-    "brfs": "^1.4.3",
-    "coveralls": "^2.11.3",
-    "grunt": "^0.4.5",
-    "grunt-browserify": "^5.0.0",
-    "grunt-cli": "^1.2.0",
-    "grunt-contrib-connect": "^1.0.0",
-    "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-uglify": "^1.0.1",
-    "grunt-mocha-istanbul": "^3.0.1",
-    "grunt-saucelabs": "^8.6.2",
-    "istanbul": "^0.4.2",
-    "jscs": "^2.9.0",
-    "jshint": "^2.6.0",
-    "mocha": "^2.1.0"
-  },
-  "directories": {},
-  "dist": {
-    "shasum": "cac9af8762c85836187003c8dfe193e5e2eae5df",
-    "tarball": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz"
-  },
-  "files": [
-    "lib"
-  ],
-  "gitHead": "6b0d2b76caae91471649c8e21f0b1d3ba0f96090",
-  "homepage": "https://github.com/indutny/elliptic",
-  "keywords": [
-    "EC",
-    "Elliptic",
-    "curve",
-    "Cryptography"
-  ],
-  "license": "MIT",
-  "main": "lib/elliptic.js",
-  "maintainers": [
-    {
-      "email": "fedor@indutny.com",
-      "name": "indutny"
-    }
-  ],
-  "name": "elliptic",
-  "optionalDependencies": {},
-  "readme": "ERROR: No README data found!",
-  "repository": {
-    "type": "git",
-    "url": "git+ssh://git@github.com/indutny/elliptic.git"
-  },
-  "scripts": {
-    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
-    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
-    "lint": "npm run jscs && npm run jshint",
-    "test": "npm run lint && npm run unit",
-    "unit": "istanbul test _mocha --reporter=spec test/index.js",
-    "version": "grunt dist && git add dist/"
-  },
-  "version": "6.4.0"
-}
-
-},{}],113:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var Transform = require('stream').Transform
-var inherits = require('inherits')
-
-function HashBase (blockSize) {
-  Transform.call(this)
-
-  this._block = new Buffer(blockSize)
-  this._blockSize = blockSize
-  this._blockOffset = 0
-  this._length = [0, 0, 0, 0]
-
-  this._finalized = false
-}
-
-inherits(HashBase, Transform)
-
-HashBase.prototype._transform = function (chunk, encoding, callback) {
-  var error = null
-  try {
-    if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding)
-    this.update(chunk)
-  } catch (err) {
-    error = err
-  }
-
-  callback(error)
-}
-
-HashBase.prototype._flush = function (callback) {
-  var error = null
-  try {
-    this.push(this._digest())
-  } catch (err) {
-    error = err
-  }
-
-  callback(error)
-}
-
-HashBase.prototype.update = function (data, encoding) {
-  if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
-  if (this._finalized) throw new Error('Digest already called')
-  if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary')
-
-  // consume data
-  var block = this._block
-  var offset = 0
-  while (this._blockOffset + data.length - offset >= this._blockSize) {
-    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
-    this._update()
-    this._blockOffset = 0
-  }
-  while (offset < data.length) block[this._blockOffset++] = data[offset++]
-
-  // update length
-  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
-    this._length[j] += carry
-    carry = (this._length[j] / 0x0100000000) | 0
-    if (carry > 0) this._length[j] -= 0x0100000000 * carry
-  }
-
-  return this
-}
-
-HashBase.prototype._update = function (data) {
-  throw new Error('_update is not implemented')
-}
-
-HashBase.prototype.digest = function (encoding) {
-  if (this._finalized) throw new Error('Digest already called')
-  this._finalized = true
-
-  var digest = this._digest()
-  if (encoding !== undefined) digest = digest.toString(encoding)
-  return digest
-}
-
-HashBase.prototype._digest = function () {
-  throw new Error('_digest is not implemented')
-}
-
-module.exports = HashBase
-
-}).call(this,require("buffer").Buffer)
-},{"buffer":5,"inherits":121,"stream":28}],114:[function(require,module,exports){
-var hash = exports;
-
-hash.utils = require('./hash/utils');
-hash.common = require('./hash/common');
-hash.sha = require('./hash/sha');
-hash.ripemd = require('./hash/ripemd');
-hash.hmac = require('./hash/hmac');
-
-// Proxy hash functions to the main object
-hash.sha1 = hash.sha.sha1;
-hash.sha256 = hash.sha.sha256;
-hash.sha224 = hash.sha.sha224;
-hash.sha384 = hash.sha.sha384;
-hash.sha512 = hash.sha.sha512;
-hash.ripemd160 = hash.ripemd.ripemd160;
-
-},{"./hash/common":115,"./hash/hmac":116,"./hash/ripemd":117,"./hash/sha":118,"./hash/utils":119}],115:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
-
-function BlockHash() {
-  this.pending = null;
-  this.pendingTotal = 0;
-  this.blockSize = this.constructor.blockSize;
-  this.outSize = this.constructor.outSize;
-  this.hmacStrength = this.constructor.hmacStrength;
-  this.padLength = this.constructor.padLength / 8;
-  this.endian = 'big';
-
-  this._delta8 = this.blockSize / 8;
-  this._delta32 = this.blockSize / 32;
-}
-exports.BlockHash = BlockHash;
-
-BlockHash.prototype.update = function update(msg, enc) {
-  // Convert message to array, pad it, and join into 32bit blocks
-  msg = utils.toArray(msg, enc);
-  if (!this.pending)
-    this.pending = msg;
-  else
-    this.pending = this.pending.concat(msg);
-  this.pendingTotal += msg.length;
-
-  // Enough data, try updating
-  if (this.pending.length >= this._delta8) {
-    msg = this.pending;
-
-    // Process pending data in blocks
-    var r = msg.length % this._delta8;
-    this.pending = msg.slice(msg.length - r, msg.length);
-    if (this.pending.length === 0)
-      this.pending = null;
-
-    msg = utils.join32(msg, 0, msg.length - r, this.endian);
-    for (var i = 0; i < msg.length; i += this._delta32)
-      this._update(msg, i, i + this._delta32);
-  }
-
-  return this;
-};
-
-BlockHash.prototype.digest = function digest(enc) {
-  this.update(this._pad());
-  assert(this.pending === null);
-
-  return this._digest(enc);
-};
-
-BlockHash.prototype._pad = function pad() {
-  var len = this.pendingTotal;
-  var bytes = this._delta8;
-  var k = bytes - ((len + this.padLength) % bytes);
-  var res = new Array(k + this.padLength);
-  res[0] = 0x80;
-  for (var i = 1; i < k; i++)
-    res[i] = 0;
-
-  // Append length
-  len <<= 3;
-  if (this.endian === 'big') {
-    for (var t = 8; t < this.padLength; t++)
-      res[i++] = 0;
-
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = (len >>> 24) & 0xff;
-    res[i++] = (len >>> 16) & 0xff;
-    res[i++] = (len >>> 8) & 0xff;
-    res[i++] = len & 0xff;
-  } else {
-    res[i++] = len & 0xff;
-    res[i++] = (len >>> 8) & 0xff;
-    res[i++] = (len >>> 16) & 0xff;
-    res[i++] = (len >>> 24) & 0xff;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-
-    for (var t = 8; t < this.padLength; t++)
-      res[i++] = 0;
-  }
-
-  return res;
-};
-
-},{"../hash":114}],116:[function(require,module,exports){
-var hmac = exports;
-
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
-
-function Hmac(hash, key, enc) {
-  if (!(this instanceof Hmac))
-    return new Hmac(hash, key, enc);
-  this.Hash = hash;
-  this.blockSize = hash.blockSize / 8;
-  this.outSize = hash.outSize / 8;
-  this.inner = null;
-  this.outer = null;
-
-  this._init(utils.toArray(key, enc));
-}
-module.exports = Hmac;
-
-Hmac.prototype._init = function init(key) {
-  // Shorten key, if needed
-  if (key.length > this.blockSize)
-    key = new this.Hash().update(key).digest();
-  assert(key.length <= this.blockSize);
-
-  // Add padding to key
-  for (var i = key.length; i < this.blockSize; i++)
-    key.push(0);
-
-  for (var i = 0; i < key.length; i++)
-    key[i] ^= 0x36;
-  this.inner = new this.Hash().update(key);
-
-  // 0x36 ^ 0x5c = 0x6a
-  for (var i = 0; i < key.length; i++)
-    key[i] ^= 0x6a;
-  this.outer = new this.Hash().update(key);
-};
-
-Hmac.prototype.update = function update(msg, enc) {
-  this.inner.update(msg, enc);
-  return this;
-};
-
-Hmac.prototype.digest = function digest(enc) {
-  this.outer.update(this.inner.digest());
-  return this.outer.digest(enc);
-};
-
-},{"../hash":114}],117:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
-
-var rotl32 = utils.rotl32;
-var sum32 = utils.sum32;
-var sum32_3 = utils.sum32_3;
-var sum32_4 = utils.sum32_4;
-var BlockHash = hash.common.BlockHash;
-
-function RIPEMD160() {
-  if (!(this instanceof RIPEMD160))
-    return new RIPEMD160();
-
-  BlockHash.call(this);
-
-  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
-  this.endian = 'little';
-}
-utils.inherits(RIPEMD160, BlockHash);
-exports.ripemd160 = RIPEMD160;
-
-RIPEMD160.blockSize = 512;
-RIPEMD160.outSize = 160;
-RIPEMD160.hmacStrength = 192;
-RIPEMD160.padLength = 64;
-
-RIPEMD160.prototype._update = function update(msg, start) {
-  var A = this.h[0];
-  var B = this.h[1];
-  var C = this.h[2];
-  var D = this.h[3];
-  var E = this.h[4];
-  var Ah = A;
-  var Bh = B;
-  var Ch = C;
-  var Dh = D;
-  var Eh = E;
-  for (var j = 0; j < 80; j++) {
-    var T = sum32(
-      rotl32(
-        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
-        s[j]),
-      E);
-    A = E;
-    E = D;
-    D = rotl32(C, 10);
-    C = B;
-    B = T;
-    T = sum32(
-      rotl32(
-        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
-        sh[j]),
-      Eh);
-    Ah = Eh;
-    Eh = Dh;
-    Dh = rotl32(Ch, 10);
-    Ch = Bh;
-    Bh = T;
-  }
-  T = sum32_3(this.h[1], C, Dh);
-  this.h[1] = sum32_3(this.h[2], D, Eh);
-  this.h[2] = sum32_3(this.h[3], E, Ah);
-  this.h[3] = sum32_3(this.h[4], A, Bh);
-  this.h[4] = sum32_3(this.h[0], B, Ch);
-  this.h[0] = T;
-};
-
-RIPEMD160.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'little');
-  else
-    return utils.split32(this.h, 'little');
-};
-
-function f(j, x, y, z) {
-  if (j <= 15)
-    return x ^ y ^ z;
-  else if (j <= 31)
-    return (x & y) | ((~x) & z);
-  else if (j <= 47)
-    return (x | (~y)) ^ z;
-  else if (j <= 63)
-    return (x & z) | (y & (~z));
-  else
-    return x ^ (y | (~z));
-}
-
-function K(j) {
-  if (j <= 15)
-    return 0x00000000;
-  else if (j <= 31)
-    return 0x5a827999;
-  else if (j <= 47)
-    return 0x6ed9eba1;
-  else if (j <= 63)
-    return 0x8f1bbcdc;
-  else
-    return 0xa953fd4e;
-}
-
-function Kh(j) {
-  if (j <= 15)
-    return 0x50a28be6;
-  else if (j <= 31)
-    return 0x5c4dd124;
-  else if (j <= 47)
-    return 0x6d703ef3;
-  else if (j <= 63)
-    return 0x7a6d76e9;
-  else
-    return 0x00000000;
-}
-
-var r = [
-  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
-  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
-  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
-  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
-];
-
-var rh = [
-  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
-  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
-  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
-  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
-  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
-];
-
-var s = [
-  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
-  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
-  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
-  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
-  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
-];
-
-var sh = [
-  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
-  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
-  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
-  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
-  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
-];
-
-},{"../hash":114}],118:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
-
-var rotr32 = utils.rotr32;
-var rotl32 = utils.rotl32;
-var sum32 = utils.sum32;
-var sum32_4 = utils.sum32_4;
-var sum32_5 = utils.sum32_5;
-var rotr64_hi = utils.rotr64_hi;
-var rotr64_lo = utils.rotr64_lo;
-var shr64_hi = utils.shr64_hi;
-var shr64_lo = utils.shr64_lo;
-var sum64 = utils.sum64;
-var sum64_hi = utils.sum64_hi;
-var sum64_lo = utils.sum64_lo;
-var sum64_4_hi = utils.sum64_4_hi;
-var sum64_4_lo = utils.sum64_4_lo;
-var sum64_5_hi = utils.sum64_5_hi;
-var sum64_5_lo = utils.sum64_5_lo;
-var BlockHash = hash.common.BlockHash;
-
-var sha256_K = [
-  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
-  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
-  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
-  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
-  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
-  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
-  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
-  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
-  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
-  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
-  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
-  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
-  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
-  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
-  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
-  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
-];
-
-var sha512_K = [
-  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
-  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
-  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
-  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
-  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
-  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
-  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
-  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
-  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
-  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
-  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
-  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
-  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
-  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
-  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
-  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
-  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
-  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
-  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
-  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
-  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
-  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
-  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
-  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
-  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
-  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
-  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
-  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
-  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
-  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
-  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
-  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
-  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
-  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
-  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
-  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
-  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
-  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
-  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
-  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
-];
-
-var sha1_K = [
-  0x5A827999, 0x6ED9EBA1,
-  0x8F1BBCDC, 0xCA62C1D6
-];
-
-function SHA256() {
-  if (!(this instanceof SHA256))
-    return new SHA256();
-
-  BlockHash.call(this);
-  this.h = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
-             0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
-  this.k = sha256_K;
-  this.W = new Array(64);
-}
-utils.inherits(SHA256, BlockHash);
-exports.sha256 = SHA256;
-
-SHA256.blockSize = 512;
-SHA256.outSize = 256;
-SHA256.hmacStrength = 192;
-SHA256.padLength = 64;
-
-SHA256.prototype._update = function _update(msg, start) {
-  var W = this.W;
-
-  for (var i = 0; i < 16; i++)
-    W[i] = msg[start + i];
-  for (; i < W.length; i++)
-    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);
-
-  var a = this.h[0];
-  var b = this.h[1];
-  var c = this.h[2];
-  var d = this.h[3];
-  var e = this.h[4];
-  var f = this.h[5];
-  var g = this.h[6];
-  var h = this.h[7];
-
-  assert(this.k.length === W.length);
-  for (var i = 0; i < W.length; i++) {
-    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
-    var T2 = sum32(s0_256(a), maj32(a, b, c));
-    h = g;
-    g = f;
-    f = e;
-    e = sum32(d, T1);
-    d = c;
-    c = b;
-    b = a;
-    a = sum32(T1, T2);
-  }
-
-  this.h[0] = sum32(this.h[0], a);
-  this.h[1] = sum32(this.h[1], b);
-  this.h[2] = sum32(this.h[2], c);
-  this.h[3] = sum32(this.h[3], d);
-  this.h[4] = sum32(this.h[4], e);
-  this.h[5] = sum32(this.h[5], f);
-  this.h[6] = sum32(this.h[6], g);
-  this.h[7] = sum32(this.h[7], h);
-};
-
-SHA256.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
-
-function SHA224() {
-  if (!(this instanceof SHA224))
-    return new SHA224();
-
-  SHA256.call(this);
-  this.h = [ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
-             0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
-}
-utils.inherits(SHA224, SHA256);
-exports.sha224 = SHA224;
-
-SHA224.blockSize = 512;
-SHA224.outSize = 224;
-SHA224.hmacStrength = 192;
-SHA224.padLength = 64;
-
-SHA224.prototype._digest = function digest(enc) {
-  // Just truncate output
-  if (enc === 'hex')
-    return utils.toHex32(this.h.slice(0, 7), 'big');
-  else
-    return utils.split32(this.h.slice(0, 7), 'big');
-};
-
-function SHA512() {
-  if (!(this instanceof SHA512))
-    return new SHA512();
-
-  BlockHash.call(this);
-  this.h = [ 0x6a09e667, 0xf3bcc908,
-             0xbb67ae85, 0x84caa73b,
-             0x3c6ef372, 0xfe94f82b,
-             0xa54ff53a, 0x5f1d36f1,
-             0x510e527f, 0xade682d1,
-             0x9b05688c, 0x2b3e6c1f,
-             0x1f83d9ab, 0xfb41bd6b,
-             0x5be0cd19, 0x137e2179 ];
-  this.k = sha512_K;
-  this.W = new Array(160);
-}
-utils.inherits(SHA512, BlockHash);
-exports.sha512 = SHA512;
-
-SHA512.blockSize = 1024;
-SHA512.outSize = 512;
-SHA512.hmacStrength = 192;
-SHA512.padLength = 128;
-
-SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
-  var W = this.W;
-
-  // 32 x 32bit words
-  for (var i = 0; i < 32; i++)
-    W[i] = msg[start + i];
-  for (; i < W.length; i += 2) {
-    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
-    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
-    var c1_hi = W[i - 14];  // i - 7
-    var c1_lo = W[i - 13];
-    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
-    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
-    var c3_hi = W[i - 32];  // i - 16
-    var c3_lo = W[i - 31];
-
-    W[i] = sum64_4_hi(c0_hi, c0_lo,
-                      c1_hi, c1_lo,
-                      c2_hi, c2_lo,
-                      c3_hi, c3_lo);
-    W[i + 1] = sum64_4_lo(c0_hi, c0_lo,
-                          c1_hi, c1_lo,
-                          c2_hi, c2_lo,
-                          c3_hi, c3_lo);
-  }
-};
-
-SHA512.prototype._update = function _update(msg, start) {
-  this._prepareBlock(msg, start);
-
-  var W = this.W;
-
-  var ah = this.h[0];
-  var al = this.h[1];
-  var bh = this.h[2];
-  var bl = this.h[3];
-  var ch = this.h[4];
-  var cl = this.h[5];
-  var dh = this.h[6];
-  var dl = this.h[7];
-  var eh = this.h[8];
-  var el = this.h[9];
-  var fh = this.h[10];
-  var fl = this.h[11];
-  var gh = this.h[12];
-  var gl = this.h[13];
-  var hh = this.h[14];
-  var hl = this.h[15];
-
-  assert(this.k.length === W.length);
-  for (var i = 0; i < W.length; i += 2) {
-    var c0_hi = hh;
-    var c0_lo = hl;
-    var c1_hi = s1_512_hi(eh, el);
-    var c1_lo = s1_512_lo(eh, el);
-    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
-    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
-    var c3_hi = this.k[i];
-    var c3_lo = this.k[i + 1];
-    var c4_hi = W[i];
-    var c4_lo = W[i + 1];
-
-    var T1_hi = sum64_5_hi(c0_hi, c0_lo,
-                           c1_hi, c1_lo,
-                           c2_hi, c2_lo,
-                           c3_hi, c3_lo,
-                           c4_hi, c4_lo);
-    var T1_lo = sum64_5_lo(c0_hi, c0_lo,
-                           c1_hi, c1_lo,
-                           c2_hi, c2_lo,
-                           c3_hi, c3_lo,
-                           c4_hi, c4_lo);
-
-    var c0_hi = s0_512_hi(ah, al);
-    var c0_lo = s0_512_lo(ah, al);
-    var c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
-    var c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);
-
-    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
-    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);
-
-    hh = gh;
-    hl = gl;
-
-    gh = fh;
-    gl = fl;
-
-    fh = eh;
-    fl = el;
-
-    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
-    el = sum64_lo(dl, dl, T1_hi, T1_lo);
-
-    dh = ch;
-    dl = cl;
-
-    ch = bh;
-    cl = bl;
-
-    bh = ah;
-    bl = al;
-
-    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
-    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
-  }
-
-  sum64(this.h, 0, ah, al);
-  sum64(this.h, 2, bh, bl);
-  sum64(this.h, 4, ch, cl);
-  sum64(this.h, 6, dh, dl);
-  sum64(this.h, 8, eh, el);
-  sum64(this.h, 10, fh, fl);
-  sum64(this.h, 12, gh, gl);
-  sum64(this.h, 14, hh, hl);
-};
-
-SHA512.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
-
-function SHA384() {
-  if (!(this instanceof SHA384))
-    return new SHA384();
-
-  SHA512.call(this);
-  this.h = [ 0xcbbb9d5d, 0xc1059ed8,
-             0x629a292a, 0x367cd507,
-             0x9159015a, 0x3070dd17,
-             0x152fecd8, 0xf70e5939,
-             0x67332667, 0xffc00b31,
-             0x8eb44a87, 0x68581511,
-             0xdb0c2e0d, 0x64f98fa7,
-             0x47b5481d, 0xbefa4fa4 ];
-}
-utils.inherits(SHA384, SHA512);
-exports.sha384 = SHA384;
-
-SHA384.blockSize = 1024;
-SHA384.outSize = 384;
-SHA384.hmacStrength = 192;
-SHA384.padLength = 128;
-
-SHA384.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h.slice(0, 12), 'big');
-  else
-    return utils.split32(this.h.slice(0, 12), 'big');
-};
-
-function SHA1() {
-  if (!(this instanceof SHA1))
-    return new SHA1();
-
-  BlockHash.call(this);
-  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe,
-             0x10325476, 0xc3d2e1f0 ];
-  this.W = new Array(80);
-}
-
-utils.inherits(SHA1, BlockHash);
-exports.sha1 = SHA1;
-
-SHA1.blockSize = 512;
-SHA1.outSize = 160;
-SHA1.hmacStrength = 80;
-SHA1.padLength = 64;
-
-SHA1.prototype._update = function _update(msg, start) {
-  var W = this.W;
-
-  for (var i = 0; i < 16; i++)
-    W[i] = msg[start + i];
-
-  for(; i < W.length; i++)
-    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
-
-  var a = this.h[0];
-  var b = this.h[1];
-  var c = this.h[2];
-  var d = this.h[3];
-  var e = this.h[4];
-
-  for (var i = 0; i < W.length; i++) {
-    var s = ~~(i / 20);
-    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
-    e = d;
-    d = c;
-    c = rotl32(b, 30);
-    b = a;
-    a = t;
-  }
-
-  this.h[0] = sum32(this.h[0], a);
-  this.h[1] = sum32(this.h[1], b);
-  this.h[2] = sum32(this.h[2], c);
-  this.h[3] = sum32(this.h[3], d);
-  this.h[4] = sum32(this.h[4], e);
-};
-
-SHA1.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
-
-function ch32(x, y, z) {
-  return (x & y) ^ ((~x) & z);
-}
-
-function maj32(x, y, z) {
-  return (x & y) ^ (x & z) ^ (y & z);
-}
-
-function p32(x, y, z) {
-  return x ^ y ^ z;
-}
-
-function s0_256(x) {
-  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
-}
-
-function s1_256(x) {
-  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
-}
-
-function g0_256(x) {
-  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
-}
-
-function g1_256(x) {
-  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
-}
-
-function ft_1(s, x, y, z) {
-  if (s === 0)
-    return ch32(x, y, z);
-  if (s === 1 || s === 3)
-    return p32(x, y, z);
-  if (s === 2)
-    return maj32(x, y, z);
-}
-
-function ch64_hi(xh, xl, yh, yl, zh, zl) {
-  var r = (xh & yh) ^ ((~xh) & zh);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function ch64_lo(xh, xl, yh, yl, zh, zl) {
-  var r = (xl & yl) ^ ((~xl) & zl);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function maj64_hi(xh, xl, yh, yl, zh, zl) {
-  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function maj64_lo(xh, xl, yh, yl, zh, zl) {
-  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function s0_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 28);
-  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
-  var c2_hi = rotr64_hi(xl, xh, 7);  // 39
-
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function s0_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 28);
-  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
-  var c2_lo = rotr64_lo(xl, xh, 7);  // 39
-
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function s1_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 14);
-  var c1_hi = rotr64_hi(xh, xl, 18);
-  var c2_hi = rotr64_hi(xl, xh, 9);  // 41
-
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function s1_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 14);
-  var c1_lo = rotr64_lo(xh, xl, 18);
-  var c2_lo = rotr64_lo(xl, xh, 9);  // 41
-
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function g0_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 1);
-  var c1_hi = rotr64_hi(xh, xl, 8);
-  var c2_hi = shr64_hi(xh, xl, 7);
-
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function g0_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 1);
-  var c1_lo = rotr64_lo(xh, xl, 8);
-  var c2_lo = shr64_lo(xh, xl, 7);
-
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function g1_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 19);
-  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
-  var c2_hi = shr64_hi(xh, xl, 6);
-
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-function g1_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 19);
-  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
-  var c2_lo = shr64_lo(xh, xl, 6);
-
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
-
-},{"../hash":114}],119:[function(require,module,exports){
-var utils = exports;
-var inherits = require('inherits');
-
-function toArray(msg, enc) {
-  if (Array.isArray(msg))
-    return msg.slice();
-  if (!msg)
-    return [];
-  var res = [];
-  if (typeof msg === 'string') {
-    if (!enc) {
-      for (var i = 0; i < msg.length; i++) {
-        var c = msg.charCodeAt(i);
-        var hi = c >> 8;
-        var lo = c & 0xff;
-        if (hi)
-          res.push(hi, lo);
-        else
-          res.push(lo);
-      }
-    } else if (enc === 'hex') {
-      msg = msg.replace(/[^a-z0-9]+/ig, '');
-      if (msg.length % 2 !== 0)
-        msg = '0' + msg;
-      for (var i = 0; i < msg.length; i += 2)
-        res.push(parseInt(msg[i] + msg[i + 1], 16));
-    }
-  } else {
-    for (var i = 0; i < msg.length; i++)
-      res[i] = msg[i] | 0;
-  }
-  return res;
-}
-utils.toArray = toArray;
-
-function toHex(msg) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++)
-    res += zero2(msg[i].toString(16));
-  return res;
-}
-utils.toHex = toHex;
-
-function htonl(w) {
-  var res = (w >>> 24) |
-            ((w >>> 8) & 0xff00) |
-            ((w << 8) & 0xff0000) |
-            ((w & 0xff) << 24);
-  return res >>> 0;
-}
-utils.htonl = htonl;
-
-function toHex32(msg, endian) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++) {
-    var w = msg[i];
-    if (endian === 'little')
-      w = htonl(w);
-    res += zero8(w.toString(16));
-  }
-  return res;
-}
-utils.toHex32 = toHex32;
-
-function zero2(word) {
-  if (word.length === 1)
-    return '0' + word;
-  else
-    return word;
-}
-utils.zero2 = zero2;
-
-function zero8(word) {
-  if (word.length === 7)
-    return '0' + word;
-  else if (word.length === 6)
-    return '00' + word;
-  else if (word.length === 5)
-    return '000' + word;
-  else if (word.length === 4)
-    return '0000' + word;
-  else if (word.length === 3)
-    return '00000' + word;
-  else if (word.length === 2)
-    return '000000' + word;
-  else if (word.length === 1)
-    return '0000000' + word;
-  else
-    return word;
-}
-utils.zero8 = zero8;
-
-function join32(msg, start, end, endian) {
-  var len = end - start;
-  assert(len % 4 === 0);
-  var res = new Array(len / 4);
-  for (var i = 0, k = start; i < res.length; i++, k += 4) {
-    var w;
-    if (endian === 'big')
-      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
-    else
-      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
-    res[i] = w >>> 0;
-  }
-  return res;
-}
-utils.join32 = join32;
-
-function split32(msg, endian) {
-  var res = new Array(msg.length * 4);
-  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
-    var m = msg[i];
-    if (endian === 'big') {
-      res[k] = m >>> 24;
-      res[k + 1] = (m >>> 16) & 0xff;
-      res[k + 2] = (m >>> 8) & 0xff;
-      res[k + 3] = m & 0xff;
-    } else {
-      res[k + 3] = m >>> 24;
-      res[k + 2] = (m >>> 16) & 0xff;
-      res[k + 1] = (m >>> 8) & 0xff;
-      res[k] = m & 0xff;
-    }
-  }
-  return res;
-}
-utils.split32 = split32;
-
-function rotr32(w, b) {
-  return (w >>> b) | (w << (32 - b));
-}
-utils.rotr32 = rotr32;
-
-function rotl32(w, b) {
-  return (w << b) | (w >>> (32 - b));
-}
-utils.rotl32 = rotl32;
-
-function sum32(a, b) {
-  return (a + b) >>> 0;
-}
-utils.sum32 = sum32;
-
-function sum32_3(a, b, c) {
-  return (a + b + c) >>> 0;
-}
-utils.sum32_3 = sum32_3;
-
-function sum32_4(a, b, c, d) {
-  return (a + b + c + d) >>> 0;
-}
-utils.sum32_4 = sum32_4;
-
-function sum32_5(a, b, c, d, e) {
-  return (a + b + c + d + e) >>> 0;
-}
-utils.sum32_5 = sum32_5;
-
-function assert(cond, msg) {
-  if (!cond)
-    throw new Error(msg || 'Assertion failed');
-}
-utils.assert = assert;
-
-utils.inherits = inherits;
-
-function sum64(buf, pos, ah, al) {
-  var bh = buf[pos];
-  var bl = buf[pos + 1];
-
-  var lo = (al + bl) >>> 0;
-  var hi = (lo < al ? 1 : 0) + ah + bh;
-  buf[pos] = hi >>> 0;
-  buf[pos + 1] = lo;
-}
-exports.sum64 = sum64;
-
-function sum64_hi(ah, al, bh, bl) {
-  var lo = (al + bl) >>> 0;
-  var hi = (lo < al ? 1 : 0) + ah + bh;
-  return hi >>> 0;
-};
-exports.sum64_hi = sum64_hi;
-
-function sum64_lo(ah, al, bh, bl) {
-  var lo = al + bl;
-  return lo >>> 0;
-};
-exports.sum64_lo = sum64_lo;
-
-function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
-  var carry = 0;
-  var lo = al;
-  lo = (lo + bl) >>> 0;
-  carry += lo < al ? 1 : 0;
-  lo = (lo + cl) >>> 0;
-  carry += lo < cl ? 1 : 0;
-  lo = (lo + dl) >>> 0;
-  carry += lo < dl ? 1 : 0;
-
-  var hi = ah + bh + ch + dh + carry;
-  return hi >>> 0;
-};
-exports.sum64_4_hi = sum64_4_hi;
-
-function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
-  var lo = al + bl + cl + dl;
-  return lo >>> 0;
-};
-exports.sum64_4_lo = sum64_4_lo;
-
-function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
-  var carry = 0;
-  var lo = al;
-  lo = (lo + bl) >>> 0;
-  carry += lo < al ? 1 : 0;
-  lo = (lo + cl) >>> 0;
-  carry += lo < cl ? 1 : 0;
-  lo = (lo + dl) >>> 0;
-  carry += lo < dl ? 1 : 0;
-  lo = (lo + el) >>> 0;
-  carry += lo < el ? 1 : 0;
-
-  var hi = ah + bh + ch + dh + eh + carry;
-  return hi >>> 0;
-};
-exports.sum64_5_hi = sum64_5_hi;
-
-function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
-  var lo = al + bl + cl + dl + el;
-
-  return lo >>> 0;
-};
-exports.sum64_5_lo = sum64_5_lo;
-
-function rotr64_hi(ah, al, num) {
-  var r = (al << (32 - num)) | (ah >>> num);
-  return r >>> 0;
-};
-exports.rotr64_hi = rotr64_hi;
-
-function rotr64_lo(ah, al, num) {
-  var r = (ah << (32 - num)) | (al >>> num);
-  return r >>> 0;
-};
-exports.rotr64_lo = rotr64_lo;
-
-function shr64_hi(ah, al, num) {
-  return ah >>> num;
-};
-exports.shr64_hi = shr64_hi;
-
-function shr64_lo(ah, al, num) {
-  var r = (ah << (32 - num)) | (al >>> num);
-  return r >>> 0;
-};
-exports.shr64_lo = shr64_lo;
-
-},{"inherits":121}],120:[function(require,module,exports){
-'use strict';
-
-var hash = require('hash.js');
-var utils = require('minimalistic-crypto-utils');
-var assert = require('minimalistic-assert');
-
-function HmacDRBG(options) {
-  if (!(this instanceof HmacDRBG))
-    return new HmacDRBG(options);
-  this.hash = options.hash;
-  this.predResist = !!options.predResist;
-
-  this.outLen = this.hash.outSize;
-  this.minEntropy = options.minEntropy || this.hash.hmacStrength;
-
-  this._reseed = null;
-  this.reseedInterval = null;
-  this.K = null;
-  this.V = null;
-
-  var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex');
-  var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex');
-  var pers = utils.toArray(options.pers, options.persEnc || 'hex');
-  assert(entropy.length >= (this.minEntropy / 8),
-         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
-  this._init(entropy, nonce, pers);
-}
-module.exports = HmacDRBG;
-
-HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
-  var seed = entropy.concat(nonce).concat(pers);
-
-  this.K = new Array(this.outLen / 8);
-  this.V = new Array(this.outLen / 8);
-  for (var i = 0; i < this.V.length; i++) {
-    this.K[i] = 0x00;
-    this.V[i] = 0x01;
-  }
-
-  this._update(seed);
-  this._reseed = 1;
-  this.reseedInterval = 0x1000000000000;  // 2^48
-};
-
-HmacDRBG.prototype._hmac = function hmac() {
-  return new hash.hmac(this.hash, this.K);
-};
-
-HmacDRBG.prototype._update = function update(seed) {
-  var kmac = this._hmac()
-                 .update(this.V)
-                 .update([ 0x00 ]);
-  if (seed)
-    kmac = kmac.update(seed);
-  this.K = kmac.digest();
-  this.V = this._hmac().update(this.V).digest();
-  if (!seed)
-    return;
-
-  this.K = this._hmac()
-               .update(this.V)
-               .update([ 0x01 ])
-               .update(seed)
-               .digest();
-  this.V = this._hmac().update(this.V).digest();
-};
-
-HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
-  // Optional entropy enc
-  if (typeof entropyEnc !== 'string') {
-    addEnc = add;
-    add = entropyEnc;
-    entropyEnc = null;
-  }
-
-  entropy = utils.toArray(entropy, entropyEnc);
-  add = utils.toArray(add, addEnc);
-
-  assert(entropy.length >= (this.minEntropy / 8),
-         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
-
-  this._update(entropy.concat(add || []));
-  this._reseed = 1;
-};
-
-HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
-  if (this._reseed > this.reseedInterval)
-    throw new Error('Reseed is required');
-
-  // Optional encoding
-  if (typeof enc !== 'string') {
-    addEnc = add;
-    add = enc;
-    enc = null;
-  }
-
-  // Optional additional data
-  if (add) {
-    add = utils.toArray(add, addEnc || 'hex');
-    this._update(add);
-  }
-
-  var temp = [];
-  while (temp.length < len) {
-    this.V = this._hmac().update(this.V).digest();
-    temp = temp.concat(this.V);
-  }
-
-  var res = temp.slice(0, len);
-  this._update(add);
-  this._reseed++;
-  return utils.encode(res, enc);
-};
-
-},{"hash.js":114,"minimalistic-assert":123,"minimalistic-crypto-utils":124}],121:[function(require,module,exports){
-arguments[4][9][0].apply(exports,arguments)
-},{"dup":9}],122:[function(require,module,exports){
-(function (Buffer){
-// constant-space merkle root calculation algorithm
-module.exports = function fastRoot (values, digestFn) {
-  if (!Array.isArray(values)) throw TypeError('Expected values Array')
-  if (typeof digestFn !== 'function') throw TypeError('Expected digest Function')
-
-  var length = values.length
-  var results = values.concat()
-
-  while (length > 1) {
-    var j = 0
-
-    for (var i = 0; i < length; i += 2, ++j) {
-      var left = results[i]
-      var right = i + 1 === length ? left : results[i + 1]
-      var data = Buffer.concat([left, right])
-
-      results[j] = digestFn(data)
-    }
-
-    length = j
-  }
-
-  return results[0]
-}
-
-}).call(this,require("buffer").Buffer)
-},{"buffer":5}],123:[function(require,module,exports){
-module.exports = assert;
-
-function assert(val, msg) {
-  if (!val)
-    throw new Error(msg || 'Assertion failed');
-}
-
-assert.equal = function assertEqual(l, r, msg) {
-  if (l != r)
-    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
-};
-
-},{}],124:[function(require,module,exports){
-'use strict';
-
-var utils = exports;
-
-function toArray(msg, enc) {
-  if (Array.isArray(msg))
-    return msg.slice();
-  if (!msg)
-    return [];
-  var res = [];
-  if (typeof msg !== 'string') {
-    for (var i = 0; i < msg.length; i++)
-      res[i] = msg[i] | 0;
-    return res;
-  }
-  if (enc === 'hex') {
-    msg = msg.replace(/[^a-z0-9]+/ig, '');
-    if (msg.length % 2 !== 0)
-      msg = '0' + msg;
-    for (var i = 0; i < msg.length; i += 2)
-      res.push(parseInt(msg[i] + msg[i + 1], 16));
-  } else {
-    for (var i = 0; i < msg.length; i++) {
-      var c = msg.charCodeAt(i);
-      var hi = c >> 8;
-      var lo = c & 0xff;
-      if (hi)
-        res.push(hi, lo);
-      else
-        res.push(lo);
-    }
-  }
-  return res;
-}
-utils.toArray = toArray;
-
-function zero2(word) {
-  if (word.length === 1)
-    return '0' + word;
-  else
-    return word;
-}
-utils.zero2 = zero2;
-
-function toHex(msg) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++)
-    res += zero2(msg[i].toString(16));
-  return res;
-}
-utils.toHex = toHex;
-
-utils.encode = function encode(arr, enc) {
-  if (enc === 'hex')
-    return toHex(arr);
-  else
-    return arr;
-};
-
-},{}],125:[function(require,module,exports){
-var OPS = require('bitcoin-ops')
-
-function encodingLength (i) {
-  return i < OPS.OP_PUSHDATA1 ? 1
-  : i <= 0xff ? 2
-  : i <= 0xffff ? 3
-  : 5
-}
-
-function encode (buffer, number, offset) {
-  var size = encodingLength(number)
-
-  // ~6 bit
-  if (size === 1) {
-    buffer.writeUInt8(number, offset)
-
-  // 8 bit
-  } else if (size === 2) {
-    buffer.writeUInt8(OPS.OP_PUSHDATA1, offset)
-    buffer.writeUInt8(number, offset + 1)
-
-  // 16 bit
-  } else if (size === 3) {
-    buffer.writeUInt8(OPS.OP_PUSHDATA2, offset)
-    buffer.writeUInt16LE(number, offset + 1)
-
-  // 32 bit
-  } else {
-    buffer.writeUInt8(OPS.OP_PUSHDATA4, offset)
-    buffer.writeUInt32LE(number, offset + 1)
-  }
-
-  return size
-}
-
-function decode (buffer, offset) {
-  var opcode = buffer.readUInt8(offset)
-  var number, size
-
-  // ~6 bit
-  if (opcode < OPS.OP_PUSHDATA1) {
-    number = opcode
-    size = 1
-
-  // 8 bit
-  } else if (opcode === OPS.OP_PUSHDATA1) {
-    if (offset + 2 > buffer.length) return null
-    number = buffer.readUInt8(offset + 1)
-    size = 2
-
-  // 16 bit
-  } else if (opcode === OPS.OP_PUSHDATA2) {
-    if (offset + 3 > buffer.length) return null
-    number = buffer.readUInt16LE(offset + 1)
-    size = 3
-
-  // 32 bit
-  } else {
-    if (offset + 5 > buffer.length) return null
-    if (opcode !== OPS.OP_PUSHDATA4) throw new Error('Unexpected opcode')
-
-    number = buffer.readUInt32LE(offset + 1)
-    size = 5
-  }
-
-  return {
-    opcode: opcode,
-    number: number,
-    size: size
-  }
-}
-
-module.exports = {
-  encodingLength: encodingLength,
-  encode: encode,
-  decode: decode
-}
-
-},{"bitcoin-ops":42}],126:[function(require,module,exports){
-(function (process,global){
-'use strict'
-
-function oldBrowser () {
-  throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11')
-}
-
-var Buffer = require('safe-buffer').Buffer
-var crypto = global.crypto || global.msCrypto
-
-if (crypto && crypto.getRandomValues) {
-  module.exports = randomBytes
-} else {
-  module.exports = oldBrowser
-}
-
-function randomBytes (size, cb) {
-  // phantomjs needs to throw
-  if (size > 65536) throw new Error('requested too many random bytes')
-  // in case browserify  isn't using the Uint8Array version
-  var rawBytes = new global.Uint8Array(size)
-
-  // This will not work in older browsers.
-  // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
-  if (size > 0) {  // getRandomValues fails on IE if size == 0
-    crypto.getRandomValues(rawBytes)
-  }
-
-  // XXX: phantomjs doesn't like a buffer being passed here
-  var bytes = Buffer.from(rawBytes.buffer)
-
-  if (typeof cb === 'function') {
-    return process.nextTick(function () {
-      cb(null, bytes)
-    })
-  }
-
-  return bytes
-}
-
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"_process":13,"safe-buffer":128}],127:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var inherits = require('inherits')
-var HashBase = require('hash-base')
-
-function RIPEMD160 () {
-  HashBase.call(this, 64)
-
-  // state
-  this._a = 0x67452301
-  this._b = 0xefcdab89
-  this._c = 0x98badcfe
-  this._d = 0x10325476
-  this._e = 0xc3d2e1f0
-}
-
-inherits(RIPEMD160, HashBase)
-
-RIPEMD160.prototype._update = function () {
-  var m = new Array(16)
-  for (var i = 0; i < 16; ++i) m[i] = this._block.readInt32LE(i * 4)
-
-  var al = this._a
-  var bl = this._b
-  var cl = this._c
-  var dl = this._d
-  var el = this._e
-
-  // Mj = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
-  // K = 0x00000000
-  // Sj = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8
-  al = fn1(al, bl, cl, dl, el, m[0], 0x00000000, 11); cl = rotl(cl, 10)
-  el = fn1(el, al, bl, cl, dl, m[1], 0x00000000, 14); bl = rotl(bl, 10)
-  dl = fn1(dl, el, al, bl, cl, m[2], 0x00000000, 15); al = rotl(al, 10)
-  cl = fn1(cl, dl, el, al, bl, m[3], 0x00000000, 12); el = rotl(el, 10)
-  bl = fn1(bl, cl, dl, el, al, m[4], 0x00000000, 5); dl = rotl(dl, 10)
-  al = fn1(al, bl, cl, dl, el, m[5], 0x00000000, 8); cl = rotl(cl, 10)
-  el = fn1(el, al, bl, cl, dl, m[6], 0x00000000, 7); bl = rotl(bl, 10)
-  dl = fn1(dl, el, al, bl, cl, m[7], 0x00000000, 9); al = rotl(al, 10)
-  cl = fn1(cl, dl, el, al, bl, m[8], 0x00000000, 11); el = rotl(el, 10)
-  bl = fn1(bl, cl, dl, el, al, m[9], 0x00000000, 13); dl = rotl(dl, 10)
-  al = fn1(al, bl, cl, dl, el, m[10], 0x00000000, 14); cl = rotl(cl, 10)
-  el = fn1(el, al, bl, cl, dl, m[11], 0x00000000, 15); bl = rotl(bl, 10)
-  dl = fn1(dl, el, al, bl, cl, m[12], 0x00000000, 6); al = rotl(al, 10)
-  cl = fn1(cl, dl, el, al, bl, m[13], 0x00000000, 7); el = rotl(el, 10)
-  bl = fn1(bl, cl, dl, el, al, m[14], 0x00000000, 9); dl = rotl(dl, 10)
-  al = fn1(al, bl, cl, dl, el, m[15], 0x00000000, 8); cl = rotl(cl, 10)
-
-  // Mj = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8
-  // K = 0x5a827999
-  // Sj = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12
-  el = fn2(el, al, bl, cl, dl, m[7], 0x5a827999, 7); bl = rotl(bl, 10)
-  dl = fn2(dl, el, al, bl, cl, m[4], 0x5a827999, 6); al = rotl(al, 10)
-  cl = fn2(cl, dl, el, al, bl, m[13], 0x5a827999, 8); el = rotl(el, 10)
-  bl = fn2(bl, cl, dl, el, al, m[1], 0x5a827999, 13); dl = rotl(dl, 10)
-  al = fn2(al, bl, cl, dl, el, m[10], 0x5a827999, 11); cl = rotl(cl, 10)
-  el = fn2(el, al, bl, cl, dl, m[6], 0x5a827999, 9); bl = rotl(bl, 10)
-  dl = fn2(dl, el, al, bl, cl, m[15], 0x5a827999, 7); al = rotl(al, 10)
-  cl = fn2(cl, dl, el, al, bl, m[3], 0x5a827999, 15); el = rotl(el, 10)
-  bl = fn2(bl, cl, dl, el, al, m[12], 0x5a827999, 7); dl = rotl(dl, 10)
-  al = fn2(al, bl, cl, dl, el, m[0], 0x5a827999, 12); cl = rotl(cl, 10)
-  el = fn2(el, al, bl, cl, dl, m[9], 0x5a827999, 15); bl = rotl(bl, 10)
-  dl = fn2(dl, el, al, bl, cl, m[5], 0x5a827999, 9); al = rotl(al, 10)
-  cl = fn2(cl, dl, el, al, bl, m[2], 0x5a827999, 11); el = rotl(el, 10)
-  bl = fn2(bl, cl, dl, el, al, m[14], 0x5a827999, 7); dl = rotl(dl, 10)
-  al = fn2(al, bl, cl, dl, el, m[11], 0x5a827999, 13); cl = rotl(cl, 10)
-  el = fn2(el, al, bl, cl, dl, m[8], 0x5a827999, 12); bl = rotl(bl, 10)
-
-  // Mj = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12
-  // K = 0x6ed9eba1
-  // Sj = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5
-  dl = fn3(dl, el, al, bl, cl, m[3], 0x6ed9eba1, 11); al = rotl(al, 10)
-  cl = fn3(cl, dl, el, al, bl, m[10], 0x6ed9eba1, 13); el = rotl(el, 10)
-  bl = fn3(bl, cl, dl, el, al, m[14], 0x6ed9eba1, 6); dl = rotl(dl, 10)
-  al = fn3(al, bl, cl, dl, el, m[4], 0x6ed9eba1, 7); cl = rotl(cl, 10)
-  el = fn3(el, al, bl, cl, dl, m[9], 0x6ed9eba1, 14); bl = rotl(bl, 10)
-  dl = fn3(dl, el, al, bl, cl, m[15], 0x6ed9eba1, 9); al = rotl(al, 10)
-  cl = fn3(cl, dl, el, al, bl, m[8], 0x6ed9eba1, 13); el = rotl(el, 10)
-  bl = fn3(bl, cl, dl, el, al, m[1], 0x6ed9eba1, 15); dl = rotl(dl, 10)
-  al = fn3(al, bl, cl, dl, el, m[2], 0x6ed9eba1, 14); cl = rotl(cl, 10)
-  el = fn3(el, al, bl, cl, dl, m[7], 0x6ed9eba1, 8); bl = rotl(bl, 10)
-  dl = fn3(dl, el, al, bl, cl, m[0], 0x6ed9eba1, 13); al = rotl(al, 10)
-  cl = fn3(cl, dl, el, al, bl, m[6], 0x6ed9eba1, 6); el = rotl(el, 10)
-  bl = fn3(bl, cl, dl, el, al, m[13], 0x6ed9eba1, 5); dl = rotl(dl, 10)
-  al = fn3(al, bl, cl, dl, el, m[11], 0x6ed9eba1, 12); cl = rotl(cl, 10)
-  el = fn3(el, al, bl, cl, dl, m[5], 0x6ed9eba1, 7); bl = rotl(bl, 10)
-  dl = fn3(dl, el, al, bl, cl, m[12], 0x6ed9eba1, 5); al = rotl(al, 10)
-
-  // Mj = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2
-  // K = 0x8f1bbcdc
-  // Sj = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12
-  cl = fn4(cl, dl, el, al, bl, m[1], 0x8f1bbcdc, 11); el = rotl(el, 10)
-  bl = fn4(bl, cl, dl, el, al, m[9], 0x8f1bbcdc, 12); dl = rotl(dl, 10)
-  al = fn4(al, bl, cl, dl, el, m[11], 0x8f1bbcdc, 14); cl = rotl(cl, 10)
-  el = fn4(el, al, bl, cl, dl, m[10], 0x8f1bbcdc, 15); bl = rotl(bl, 10)
-  dl = fn4(dl, el, al, bl, cl, m[0], 0x8f1bbcdc, 14); al = rotl(al, 10)
-  cl = fn4(cl, dl, el, al, bl, m[8], 0x8f1bbcdc, 15); el = rotl(el, 10)
-  bl = fn4(bl, cl, dl, el, al, m[12], 0x8f1bbcdc, 9); dl = rotl(dl, 10)
-  al = fn4(al, bl, cl, dl, el, m[4], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
-  el = fn4(el, al, bl, cl, dl, m[13], 0x8f1bbcdc, 9); bl = rotl(bl, 10)
-  dl = fn4(dl, el, al, bl, cl, m[3], 0x8f1bbcdc, 14); al = rotl(al, 10)
-  cl = fn4(cl, dl, el, al, bl, m[7], 0x8f1bbcdc, 5); el = rotl(el, 10)
-  bl = fn4(bl, cl, dl, el, al, m[15], 0x8f1bbcdc, 6); dl = rotl(dl, 10)
-  al = fn4(al, bl, cl, dl, el, m[14], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
-  el = fn4(el, al, bl, cl, dl, m[5], 0x8f1bbcdc, 6); bl = rotl(bl, 10)
-  dl = fn4(dl, el, al, bl, cl, m[6], 0x8f1bbcdc, 5); al = rotl(al, 10)
-  cl = fn4(cl, dl, el, al, bl, m[2], 0x8f1bbcdc, 12); el = rotl(el, 10)
-
-  // Mj = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
-  // K = 0xa953fd4e
-  // Sj = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
-  bl = fn5(bl, cl, dl, el, al, m[4], 0xa953fd4e, 9); dl = rotl(dl, 10)
-  al = fn5(al, bl, cl, dl, el, m[0], 0xa953fd4e, 15); cl = rotl(cl, 10)
-  el = fn5(el, al, bl, cl, dl, m[5], 0xa953fd4e, 5); bl = rotl(bl, 10)
-  dl = fn5(dl, el, al, bl, cl, m[9], 0xa953fd4e, 11); al = rotl(al, 10)
-  cl = fn5(cl, dl, el, al, bl, m[7], 0xa953fd4e, 6); el = rotl(el, 10)
-  bl = fn5(bl, cl, dl, el, al, m[12], 0xa953fd4e, 8); dl = rotl(dl, 10)
-  al = fn5(al, bl, cl, dl, el, m[2], 0xa953fd4e, 13); cl = rotl(cl, 10)
-  el = fn5(el, al, bl, cl, dl, m[10], 0xa953fd4e, 12); bl = rotl(bl, 10)
-  dl = fn5(dl, el, al, bl, cl, m[14], 0xa953fd4e, 5); al = rotl(al, 10)
-  cl = fn5(cl, dl, el, al, bl, m[1], 0xa953fd4e, 12); el = rotl(el, 10)
-  bl = fn5(bl, cl, dl, el, al, m[3], 0xa953fd4e, 13); dl = rotl(dl, 10)
-  al = fn5(al, bl, cl, dl, el, m[8], 0xa953fd4e, 14); cl = rotl(cl, 10)
-  el = fn5(el, al, bl, cl, dl, m[11], 0xa953fd4e, 11); bl = rotl(bl, 10)
-  dl = fn5(dl, el, al, bl, cl, m[6], 0xa953fd4e, 8); al = rotl(al, 10)
-  cl = fn5(cl, dl, el, al, bl, m[15], 0xa953fd4e, 5); el = rotl(el, 10)
-  bl = fn5(bl, cl, dl, el, al, m[13], 0xa953fd4e, 6); dl = rotl(dl, 10)
-
-  var ar = this._a
-  var br = this._b
-  var cr = this._c
-  var dr = this._d
-  var er = this._e
-
-  // M'j = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12
-  // K' = 0x50a28be6
-  // S'j = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6
-  ar = fn5(ar, br, cr, dr, er, m[5], 0x50a28be6, 8); cr = rotl(cr, 10)
-  er = fn5(er, ar, br, cr, dr, m[14], 0x50a28be6, 9); br = rotl(br, 10)
-  dr = fn5(dr, er, ar, br, cr, m[7], 0x50a28be6, 9); ar = rotl(ar, 10)
-  cr = fn5(cr, dr, er, ar, br, m[0], 0x50a28be6, 11); er = rotl(er, 10)
-  br = fn5(br, cr, dr, er, ar, m[9], 0x50a28be6, 13); dr = rotl(dr, 10)
-  ar = fn5(ar, br, cr, dr, er, m[2], 0x50a28be6, 15); cr = rotl(cr, 10)
-  er = fn5(er, ar, br, cr, dr, m[11], 0x50a28be6, 15); br = rotl(br, 10)
-  dr = fn5(dr, er, ar, br, cr, m[4], 0x50a28be6, 5); ar = rotl(ar, 10)
-  cr = fn5(cr, dr, er, ar, br, m[13], 0x50a28be6, 7); er = rotl(er, 10)
-  br = fn5(br, cr, dr, er, ar, m[6], 0x50a28be6, 7); dr = rotl(dr, 10)
-  ar = fn5(ar, br, cr, dr, er, m[15], 0x50a28be6, 8); cr = rotl(cr, 10)
-  er = fn5(er, ar, br, cr, dr, m[8], 0x50a28be6, 11); br = rotl(br, 10)
-  dr = fn5(dr, er, ar, br, cr, m[1], 0x50a28be6, 14); ar = rotl(ar, 10)
-  cr = fn5(cr, dr, er, ar, br, m[10], 0x50a28be6, 14); er = rotl(er, 10)
-  br = fn5(br, cr, dr, er, ar, m[3], 0x50a28be6, 12); dr = rotl(dr, 10)
-  ar = fn5(ar, br, cr, dr, er, m[12], 0x50a28be6, 6); cr = rotl(cr, 10)
-
-  // M'j = 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2
-  // K' = 0x5c4dd124
-  // S'j = 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11
-  er = fn4(er, ar, br, cr, dr, m[6], 0x5c4dd124, 9); br = rotl(br, 10)
-  dr = fn4(dr, er, ar, br, cr, m[11], 0x5c4dd124, 13); ar = rotl(ar, 10)
-  cr = fn4(cr, dr, er, ar, br, m[3], 0x5c4dd124, 15); er = rotl(er, 10)
-  br = fn4(br, cr, dr, er, ar, m[7], 0x5c4dd124, 7); dr = rotl(dr, 10)
-  ar = fn4(ar, br, cr, dr, er, m[0], 0x5c4dd124, 12); cr = rotl(cr, 10)
-  er = fn4(er, ar, br, cr, dr, m[13], 0x5c4dd124, 8); br = rotl(br, 10)
-  dr = fn4(dr, er, ar, br, cr, m[5], 0x5c4dd124, 9); ar = rotl(ar, 10)
-  cr = fn4(cr, dr, er, ar, br, m[10], 0x5c4dd124, 11); er = rotl(er, 10)
-  br = fn4(br, cr, dr, er, ar, m[14], 0x5c4dd124, 7); dr = rotl(dr, 10)
-  ar = fn4(ar, br, cr, dr, er, m[15], 0x5c4dd124, 7); cr = rotl(cr, 10)
-  er = fn4(er, ar, br, cr, dr, m[8], 0x5c4dd124, 12); br = rotl(br, 10)
-  dr = fn4(dr, er, ar, br, cr, m[12], 0x5c4dd124, 7); ar = rotl(ar, 10)
-  cr = fn4(cr, dr, er, ar, br, m[4], 0x5c4dd124, 6); er = rotl(er, 10)
-  br = fn4(br, cr, dr, er, ar, m[9], 0x5c4dd124, 15); dr = rotl(dr, 10)
-  ar = fn4(ar, br, cr, dr, er, m[1], 0x5c4dd124, 13); cr = rotl(cr, 10)
-  er = fn4(er, ar, br, cr, dr, m[2], 0x5c4dd124, 11); br = rotl(br, 10)
-
-  // M'j = 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13
-  // K' = 0x6d703ef3
-  // S'j = 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5
-  dr = fn3(dr, er, ar, br, cr, m[15], 0x6d703ef3, 9); ar = rotl(ar, 10)
-  cr = fn3(cr, dr, er, ar, br, m[5], 0x6d703ef3, 7); er = rotl(er, 10)
-  br = fn3(br, cr, dr, er, ar, m[1], 0x6d703ef3, 15); dr = rotl(dr, 10)
-  ar = fn3(ar, br, cr, dr, er, m[3], 0x6d703ef3, 11); cr = rotl(cr, 10)
-  er = fn3(er, ar, br, cr, dr, m[7], 0x6d703ef3, 8); br = rotl(br, 10)
-  dr = fn3(dr, er, ar, br, cr, m[14], 0x6d703ef3, 6); ar = rotl(ar, 10)
-  cr = fn3(cr, dr, er, ar, br, m[6], 0x6d703ef3, 6); er = rotl(er, 10)
-  br = fn3(br, cr, dr, er, ar, m[9], 0x6d703ef3, 14); dr = rotl(dr, 10)
-  ar = fn3(ar, br, cr, dr, er, m[11], 0x6d703ef3, 12); cr = rotl(cr, 10)
-  er = fn3(er, ar, br, cr, dr, m[8], 0x6d703ef3, 13); br = rotl(br, 10)
-  dr = fn3(dr, er, ar, br, cr, m[12], 0x6d703ef3, 5); ar = rotl(ar, 10)
-  cr = fn3(cr, dr, er, ar, br, m[2], 0x6d703ef3, 14); er = rotl(er, 10)
-  br = fn3(br, cr, dr, er, ar, m[10], 0x6d703ef3, 13); dr = rotl(dr, 10)
-  ar = fn3(ar, br, cr, dr, er, m[0], 0x6d703ef3, 13); cr = rotl(cr, 10)
-  er = fn3(er, ar, br, cr, dr, m[4], 0x6d703ef3, 7); br = rotl(br, 10)
-  dr = fn3(dr, er, ar, br, cr, m[13], 0x6d703ef3, 5); ar = rotl(ar, 10)
-
-  // M'j = 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14
-  // K' = 0x7a6d76e9
-  // S'j = 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8
-  cr = fn2(cr, dr, er, ar, br, m[8], 0x7a6d76e9, 15); er = rotl(er, 10)
-  br = fn2(br, cr, dr, er, ar, m[6], 0x7a6d76e9, 5); dr = rotl(dr, 10)
-  ar = fn2(ar, br, cr, dr, er, m[4], 0x7a6d76e9, 8); cr = rotl(cr, 10)
-  er = fn2(er, ar, br, cr, dr, m[1], 0x7a6d76e9, 11); br = rotl(br, 10)
-  dr = fn2(dr, er, ar, br, cr, m[3], 0x7a6d76e9, 14); ar = rotl(ar, 10)
-  cr = fn2(cr, dr, er, ar, br, m[11], 0x7a6d76e9, 14); er = rotl(er, 10)
-  br = fn2(br, cr, dr, er, ar, m[15], 0x7a6d76e9, 6); dr = rotl(dr, 10)
-  ar = fn2(ar, br, cr, dr, er, m[0], 0x7a6d76e9, 14); cr = rotl(cr, 10)
-  er = fn2(er, ar, br, cr, dr, m[5], 0x7a6d76e9, 6); br = rotl(br, 10)
-  dr = fn2(dr, er, ar, br, cr, m[12], 0x7a6d76e9, 9); ar = rotl(ar, 10)
-  cr = fn2(cr, dr, er, ar, br, m[2], 0x7a6d76e9, 12); er = rotl(er, 10)
-  br = fn2(br, cr, dr, er, ar, m[13], 0x7a6d76e9, 9); dr = rotl(dr, 10)
-  ar = fn2(ar, br, cr, dr, er, m[9], 0x7a6d76e9, 12); cr = rotl(cr, 10)
-  er = fn2(er, ar, br, cr, dr, m[7], 0x7a6d76e9, 5); br = rotl(br, 10)
-  dr = fn2(dr, er, ar, br, cr, m[10], 0x7a6d76e9, 15); ar = rotl(ar, 10)
-  cr = fn2(cr, dr, er, ar, br, m[14], 0x7a6d76e9, 8); er = rotl(er, 10)
-
-  // M'j = 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
-  // K' = 0x00000000
-  // S'j = 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
-  br = fn1(br, cr, dr, er, ar, m[12], 0x00000000, 8); dr = rotl(dr, 10)
-  ar = fn1(ar, br, cr, dr, er, m[15], 0x00000000, 5); cr = rotl(cr, 10)
-  er = fn1(er, ar, br, cr, dr, m[10], 0x00000000, 12); br = rotl(br, 10)
-  dr = fn1(dr, er, ar, br, cr, m[4], 0x00000000, 9); ar = rotl(ar, 10)
-  cr = fn1(cr, dr, er, ar, br, m[1], 0x00000000, 12); er = rotl(er, 10)
-  br = fn1(br, cr, dr, er, ar, m[5], 0x00000000, 5); dr = rotl(dr, 10)
-  ar = fn1(ar, br, cr, dr, er, m[8], 0x00000000, 14); cr = rotl(cr, 10)
-  er = fn1(er, ar, br, cr, dr, m[7], 0x00000000, 6); br = rotl(br, 10)
-  dr = fn1(dr, er, ar, br, cr, m[6], 0x00000000, 8); ar = rotl(ar, 10)
-  cr = fn1(cr, dr, er, ar, br, m[2], 0x00000000, 13); er = rotl(er, 10)
-  br = fn1(br, cr, dr, er, ar, m[13], 0x00000000, 6); dr = rotl(dr, 10)
-  ar = fn1(ar, br, cr, dr, er, m[14], 0x00000000, 5); cr = rotl(cr, 10)
-  er = fn1(er, ar, br, cr, dr, m[0], 0x00000000, 15); br = rotl(br, 10)
-  dr = fn1(dr, er, ar, br, cr, m[3], 0x00000000, 13); ar = rotl(ar, 10)
-  cr = fn1(cr, dr, er, ar, br, m[9], 0x00000000, 11); er = rotl(er, 10)
-  br = fn1(br, cr, dr, er, ar, m[11], 0x00000000, 11); dr = rotl(dr, 10)
-
-  // change state
-  var t = (this._b + cl + dr) | 0
-  this._b = (this._c + dl + er) | 0
-  this._c = (this._d + el + ar) | 0
-  this._d = (this._e + al + br) | 0
-  this._e = (this._a + bl + cr) | 0
-  this._a = t
-}
-
-RIPEMD160.prototype._digest = function () {
-  // create padding and handle blocks
-  this._block[this._blockOffset++] = 0x80
-  if (this._blockOffset > 56) {
-    this._block.fill(0, this._blockOffset, 64)
-    this._update()
-    this._blockOffset = 0
-  }
-
-  this._block.fill(0, this._blockOffset, 56)
-  this._block.writeUInt32LE(this._length[0], 56)
-  this._block.writeUInt32LE(this._length[1], 60)
-  this._update()
-
-  // produce result
-  var buffer = new Buffer(20)
-  buffer.writeInt32LE(this._a, 0)
-  buffer.writeInt32LE(this._b, 4)
-  buffer.writeInt32LE(this._c, 8)
-  buffer.writeInt32LE(this._d, 12)
-  buffer.writeInt32LE(this._e, 16)
-  return buffer
-}
-
-function rotl (x, n) {
-  return (x << n) | (x >>> (32 - n))
-}
-
-function fn1 (a, b, c, d, e, m, k, s) {
-  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
-}
-
-function fn2 (a, b, c, d, e, m, k, s) {
-  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
-}
-
-function fn3 (a, b, c, d, e, m, k, s) {
-  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
-}
-
-function fn4 (a, b, c, d, e, m, k, s) {
-  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
-}
-
-function fn5 (a, b, c, d, e, m, k, s) {
-  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
-}
-
-module.exports = RIPEMD160
-
-}).call(this,require("buffer").Buffer)
-},{"buffer":5,"hash-base":113,"inherits":121}],128:[function(require,module,exports){
-/* eslint-disable node/no-deprecated-api */
-var buffer = require('buffer')
-var Buffer = buffer.Buffer
-
-// alternative to using Object.keys for old browsers
-function copyProps (src, dst) {
-  for (var key in src) {
-    dst[key] = src[key]
-  }
-}
-if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
-  module.exports = buffer
-} else {
-  // Copy properties from require('buffer')
-  copyProps(buffer, exports)
-  exports.Buffer = SafeBuffer
-}
-
-function SafeBuffer (arg, encodingOrOffset, length) {
-  return Buffer(arg, encodingOrOffset, length)
-}
-
-// Copy static methods from Buffer
-copyProps(Buffer, SafeBuffer)
-
-SafeBuffer.from = function (arg, encodingOrOffset, length) {
-  if (typeof arg === 'number') {
-    throw new TypeError('Argument must not be a number')
-  }
-  return Buffer(arg, encodingOrOffset, length)
-}
-
-SafeBuffer.alloc = function (size, fill, encoding) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  var buf = Buffer(size)
-  if (fill !== undefined) {
-    if (typeof encoding === 'string') {
-      buf.fill(fill, encoding)
-    } else {
-      buf.fill(fill)
-    }
-  } else {
-    buf.fill(0)
-  }
-  return buf
-}
-
-SafeBuffer.allocUnsafe = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return Buffer(size)
-}
-
-SafeBuffer.allocUnsafeSlow = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return buffer.SlowBuffer(size)
-}
-
-},{"buffer":5}],129:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-
-// prototype class for hash functions
-function Hash (blockSize, finalSize) {
-  this._block = Buffer.alloc(blockSize)
-  this._finalSize = finalSize
-  this._blockSize = blockSize
-  this._len = 0
-}
-
-Hash.prototype.update = function (data, enc) {
-  if (typeof data === 'string') {
-    enc = enc || 'utf8'
-    data = Buffer.from(data, enc)
-  }
-
-  var block = this._block
-  var blockSize = this._blockSize
-  var length = data.length
-  var accum = this._len
-
-  for (var offset = 0; offset < length;) {
-    var assigned = accum % blockSize
-    var remainder = Math.min(length - offset, blockSize - assigned)
-
-    for (var i = 0; i < remainder; i++) {
-      block[assigned + i] = data[offset + i]
-    }
-
-    accum += remainder
-    offset += remainder
-
-    if ((accum % blockSize) === 0) {
-      this._update(block)
-    }
-  }
-
-  this._len += length
-  return this
-}
-
-Hash.prototype.digest = function (enc) {
-  var rem = this._len % this._blockSize
-
-  this._block[rem] = 0x80
-
-  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
-  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
-  this._block.fill(0, rem + 1)
-
-  if (rem >= this._finalSize) {
-    this._update(this._block)
-    this._block.fill(0)
-  }
-
-  var bits = this._len * 8
-
-  // uint32
-  if (bits <= 0xffffffff) {
-    this._block.writeUInt32BE(bits, this._blockSize - 4)
-
-  // uint64
-  } else {
-    var lowBits = bits & 0xffffffff
-    var highBits = (bits - lowBits) / 0x100000000
-
-    this._block.writeUInt32BE(highBits, this._blockSize - 8)
-    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
-  }
-
-  this._update(this._block)
-  var hash = this._hash()
-
-  return enc ? hash.toString(enc) : hash
-}
-
-Hash.prototype._update = function () {
-  throw new Error('_update must be implemented by subclass')
-}
-
-module.exports = Hash
-
-},{"safe-buffer":128}],130:[function(require,module,exports){
-var exports = module.exports = function SHA (algorithm) {
-  algorithm = algorithm.toLowerCase()
-
-  var Algorithm = exports[algorithm]
-  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
-
-  return new Algorithm()
-}
-
-exports.sha = require('./sha')
-exports.sha1 = require('./sha1')
-exports.sha224 = require('./sha224')
-exports.sha256 = require('./sha256')
-exports.sha384 = require('./sha384')
-exports.sha512 = require('./sha512')
-
-},{"./sha":131,"./sha1":132,"./sha224":133,"./sha256":134,"./sha384":135,"./sha512":136}],131:[function(require,module,exports){
-/*
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
- * in FIPS PUB 180-1
- * This source code is derived from sha1.js of the same repository.
- * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
- * operation was added.
- */
-
-var inherits = require('inherits')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var K = [
-  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
-]
-
-var W = new Array(80)
-
-function Sha () {
-  this.init()
-  this._w = W
-
-  Hash.call(this, 64, 56)
-}
-
-inherits(Sha, Hash)
-
-Sha.prototype.init = function () {
-  this._a = 0x67452301
-  this._b = 0xefcdab89
-  this._c = 0x98badcfe
-  this._d = 0x10325476
-  this._e = 0xc3d2e1f0
-
-  return this
-}
-
-function rotl5 (num) {
-  return (num << 5) | (num >>> 27)
-}
-
-function rotl30 (num) {
-  return (num << 30) | (num >>> 2)
-}
-
-function ft (s, b, c, d) {
-  if (s === 0) return (b & c) | ((~b) & d)
-  if (s === 2) return (b & c) | (b & d) | (c & d)
-  return b ^ c ^ d
-}
-
-Sha.prototype._update = function (M) {
-  var W = this._w
-
-  var a = this._a | 0
-  var b = this._b | 0
-  var c = this._c | 0
-  var d = this._d | 0
-  var e = this._e | 0
-
-  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
-
-  for (var j = 0; j < 80; ++j) {
-    var s = ~~(j / 20)
-    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
-
-    e = d
-    d = c
-    c = rotl30(b)
-    b = a
-    a = t
-  }
-
-  this._a = (a + this._a) | 0
-  this._b = (b + this._b) | 0
-  this._c = (c + this._c) | 0
-  this._d = (d + this._d) | 0
-  this._e = (e + this._e) | 0
-}
-
-Sha.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(20)
-
-  H.writeInt32BE(this._a | 0, 0)
-  H.writeInt32BE(this._b | 0, 4)
-  H.writeInt32BE(this._c | 0, 8)
-  H.writeInt32BE(this._d | 0, 12)
-  H.writeInt32BE(this._e | 0, 16)
-
-  return H
-}
-
-module.exports = Sha
-
-},{"./hash":129,"inherits":121,"safe-buffer":128}],132:[function(require,module,exports){
-/*
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
- * in FIPS PUB 180-1
- * Version 2.1a Copyright Paul Johnston 2000 - 2002.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- * Distributed under the BSD License
- * See http://pajhome.org.uk/crypt/md5 for details.
- */
-
-var inherits = require('inherits')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var K = [
-  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
-]
-
-var W = new Array(80)
-
-function Sha1 () {
-  this.init()
-  this._w = W
-
-  Hash.call(this, 64, 56)
-}
-
-inherits(Sha1, Hash)
-
-Sha1.prototype.init = function () {
-  this._a = 0x67452301
-  this._b = 0xefcdab89
-  this._c = 0x98badcfe
-  this._d = 0x10325476
-  this._e = 0xc3d2e1f0
-
-  return this
-}
-
-function rotl1 (num) {
-  return (num << 1) | (num >>> 31)
-}
-
-function rotl5 (num) {
-  return (num << 5) | (num >>> 27)
-}
-
-function rotl30 (num) {
-  return (num << 30) | (num >>> 2)
-}
-
-function ft (s, b, c, d) {
-  if (s === 0) return (b & c) | ((~b) & d)
-  if (s === 2) return (b & c) | (b & d) | (c & d)
-  return b ^ c ^ d
-}
-
-Sha1.prototype._update = function (M) {
-  var W = this._w
-
-  var a = this._a | 0
-  var b = this._b | 0
-  var c = this._c | 0
-  var d = this._d | 0
-  var e = this._e | 0
-
-  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
-
-  for (var j = 0; j < 80; ++j) {
-    var s = ~~(j / 20)
-    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
-
-    e = d
-    d = c
-    c = rotl30(b)
-    b = a
-    a = t
-  }
-
-  this._a = (a + this._a) | 0
-  this._b = (b + this._b) | 0
-  this._c = (c + this._c) | 0
-  this._d = (d + this._d) | 0
-  this._e = (e + this._e) | 0
-}
-
-Sha1.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(20)
-
-  H.writeInt32BE(this._a | 0, 0)
-  H.writeInt32BE(this._b | 0, 4)
-  H.writeInt32BE(this._c | 0, 8)
-  H.writeInt32BE(this._d | 0, 12)
-  H.writeInt32BE(this._e | 0, 16)
-
-  return H
-}
-
-module.exports = Sha1
-
-},{"./hash":129,"inherits":121,"safe-buffer":128}],133:[function(require,module,exports){
-/**
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
- * in FIPS 180-2
- * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- *
- */
-
-var inherits = require('inherits')
-var Sha256 = require('./sha256')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var W = new Array(64)
-
-function Sha224 () {
-  this.init()
-
-  this._w = W // new Array(64)
-
-  Hash.call(this, 64, 56)
-}
-
-inherits(Sha224, Sha256)
-
-Sha224.prototype.init = function () {
-  this._a = 0xc1059ed8
-  this._b = 0x367cd507
-  this._c = 0x3070dd17
-  this._d = 0xf70e5939
-  this._e = 0xffc00b31
-  this._f = 0x68581511
-  this._g = 0x64f98fa7
-  this._h = 0xbefa4fa4
-
-  return this
-}
-
-Sha224.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(28)
-
-  H.writeInt32BE(this._a, 0)
-  H.writeInt32BE(this._b, 4)
-  H.writeInt32BE(this._c, 8)
-  H.writeInt32BE(this._d, 12)
-  H.writeInt32BE(this._e, 16)
-  H.writeInt32BE(this._f, 20)
-  H.writeInt32BE(this._g, 24)
-
-  return H
-}
-
-module.exports = Sha224
-
-},{"./hash":129,"./sha256":134,"inherits":121,"safe-buffer":128}],134:[function(require,module,exports){
-/**
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
- * in FIPS 180-2
- * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- *
- */
-
-var inherits = require('inherits')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var K = [
-  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
-  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
-  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
-  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
-  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
-  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
-  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
-  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
-  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
-  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
-  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
-  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
-  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
-  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
-  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
-  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
-]
-
-var W = new Array(64)
-
-function Sha256 () {
-  this.init()
-
-  this._w = W // new Array(64)
-
-  Hash.call(this, 64, 56)
-}
-
-inherits(Sha256, Hash)
-
-Sha256.prototype.init = function () {
-  this._a = 0x6a09e667
-  this._b = 0xbb67ae85
-  this._c = 0x3c6ef372
-  this._d = 0xa54ff53a
-  this._e = 0x510e527f
-  this._f = 0x9b05688c
-  this._g = 0x1f83d9ab
-  this._h = 0x5be0cd19
-
-  return this
-}
-
-function ch (x, y, z) {
-  return z ^ (x & (y ^ z))
-}
-
-function maj (x, y, z) {
-  return (x & y) | (z & (x | y))
-}
-
-function sigma0 (x) {
-  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
-}
-
-function sigma1 (x) {
-  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
-}
-
-function gamma0 (x) {
-  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
-}
-
-function gamma1 (x) {
-  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
-}
-
-Sha256.prototype._update = function (M) {
-  var W = this._w
-
-  var a = this._a | 0
-  var b = this._b | 0
-  var c = this._c | 0
-  var d = this._d | 0
-  var e = this._e | 0
-  var f = this._f | 0
-  var g = this._g | 0
-  var h = this._h | 0
-
-  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
-
-  for (var j = 0; j < 64; ++j) {
-    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
-    var T2 = (sigma0(a) + maj(a, b, c)) | 0
-
-    h = g
-    g = f
-    f = e
-    e = (d + T1) | 0
-    d = c
-    c = b
-    b = a
-    a = (T1 + T2) | 0
-  }
-
-  this._a = (a + this._a) | 0
-  this._b = (b + this._b) | 0
-  this._c = (c + this._c) | 0
-  this._d = (d + this._d) | 0
-  this._e = (e + this._e) | 0
-  this._f = (f + this._f) | 0
-  this._g = (g + this._g) | 0
-  this._h = (h + this._h) | 0
-}
-
-Sha256.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(32)
-
-  H.writeInt32BE(this._a, 0)
-  H.writeInt32BE(this._b, 4)
-  H.writeInt32BE(this._c, 8)
-  H.writeInt32BE(this._d, 12)
-  H.writeInt32BE(this._e, 16)
-  H.writeInt32BE(this._f, 20)
-  H.writeInt32BE(this._g, 24)
-  H.writeInt32BE(this._h, 28)
-
-  return H
-}
-
-module.exports = Sha256
-
-},{"./hash":129,"inherits":121,"safe-buffer":128}],135:[function(require,module,exports){
-var inherits = require('inherits')
-var SHA512 = require('./sha512')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var W = new Array(160)
-
-function Sha384 () {
-  this.init()
-  this._w = W
-
-  Hash.call(this, 128, 112)
-}
-
-inherits(Sha384, SHA512)
-
-Sha384.prototype.init = function () {
-  this._ah = 0xcbbb9d5d
-  this._bh = 0x629a292a
-  this._ch = 0x9159015a
-  this._dh = 0x152fecd8
-  this._eh = 0x67332667
-  this._fh = 0x8eb44a87
-  this._gh = 0xdb0c2e0d
-  this._hh = 0x47b5481d
-
-  this._al = 0xc1059ed8
-  this._bl = 0x367cd507
-  this._cl = 0x3070dd17
-  this._dl = 0xf70e5939
-  this._el = 0xffc00b31
-  this._fl = 0x68581511
-  this._gl = 0x64f98fa7
-  this._hl = 0xbefa4fa4
-
-  return this
-}
-
-Sha384.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(48)
-
-  function writeInt64BE (h, l, offset) {
-    H.writeInt32BE(h, offset)
-    H.writeInt32BE(l, offset + 4)
-  }
-
-  writeInt64BE(this._ah, this._al, 0)
-  writeInt64BE(this._bh, this._bl, 8)
-  writeInt64BE(this._ch, this._cl, 16)
-  writeInt64BE(this._dh, this._dl, 24)
-  writeInt64BE(this._eh, this._el, 32)
-  writeInt64BE(this._fh, this._fl, 40)
-
-  return H
-}
-
-module.exports = Sha384
-
-},{"./hash":129,"./sha512":136,"inherits":121,"safe-buffer":128}],136:[function(require,module,exports){
-var inherits = require('inherits')
-var Hash = require('./hash')
-var Buffer = require('safe-buffer').Buffer
-
-var K = [
-  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
-  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
-  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
-  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
-  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
-  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
-  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
-  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
-  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
-  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
-  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
-  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
-  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
-  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
-  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
-  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
-  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
-  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
-  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
-  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
-  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
-  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
-  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
-  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
-  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
-  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
-  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
-  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
-  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
-  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
-  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
-  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
-  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
-  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
-  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
-  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
-  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
-  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
-  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
-  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
-]
-
-var W = new Array(160)
-
-function Sha512 () {
-  this.init()
-  this._w = W
-
-  Hash.call(this, 128, 112)
-}
-
-inherits(Sha512, Hash)
-
-Sha512.prototype.init = function () {
-  this._ah = 0x6a09e667
-  this._bh = 0xbb67ae85
-  this._ch = 0x3c6ef372
-  this._dh = 0xa54ff53a
-  this._eh = 0x510e527f
-  this._fh = 0x9b05688c
-  this._gh = 0x1f83d9ab
-  this._hh = 0x5be0cd19
-
-  this._al = 0xf3bcc908
-  this._bl = 0x84caa73b
-  this._cl = 0xfe94f82b
-  this._dl = 0x5f1d36f1
-  this._el = 0xade682d1
-  this._fl = 0x2b3e6c1f
-  this._gl = 0xfb41bd6b
-  this._hl = 0x137e2179
-
-  return this
-}
-
-function Ch (x, y, z) {
-  return z ^ (x & (y ^ z))
-}
-
-function maj (x, y, z) {
-  return (x & y) | (z & (x | y))
-}
-
-function sigma0 (x, xl) {
-  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
-}
-
-function sigma1 (x, xl) {
-  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
-}
-
-function Gamma0 (x, xl) {
-  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
-}
-
-function Gamma0l (x, xl) {
-  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
-}
-
-function Gamma1 (x, xl) {
-  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
-}
-
-function Gamma1l (x, xl) {
-  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
-}
-
-function getCarry (a, b) {
-  return (a >>> 0) < (b >>> 0) ? 1 : 0
-}
-
-Sha512.prototype._update = function (M) {
-  var W = this._w
-
-  var ah = this._ah | 0
-  var bh = this._bh | 0
-  var ch = this._ch | 0
-  var dh = this._dh | 0
-  var eh = this._eh | 0
-  var fh = this._fh | 0
-  var gh = this._gh | 0
-  var hh = this._hh | 0
-
-  var al = this._al | 0
-  var bl = this._bl | 0
-  var cl = this._cl | 0
-  var dl = this._dl | 0
-  var el = this._el | 0
-  var fl = this._fl | 0
-  var gl = this._gl | 0
-  var hl = this._hl | 0
-
-  for (var i = 0; i < 32; i += 2) {
-    W[i] = M.readInt32BE(i * 4)
-    W[i + 1] = M.readInt32BE(i * 4 + 4)
-  }
-  for (; i < 160; i += 2) {
-    var xh = W[i - 15 * 2]
-    var xl = W[i - 15 * 2 + 1]
-    var gamma0 = Gamma0(xh, xl)
-    var gamma0l = Gamma0l(xl, xh)
-
-    xh = W[i - 2 * 2]
-    xl = W[i - 2 * 2 + 1]
-    var gamma1 = Gamma1(xh, xl)
-    var gamma1l = Gamma1l(xl, xh)
-
-    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
-    var Wi7h = W[i - 7 * 2]
-    var Wi7l = W[i - 7 * 2 + 1]
-
-    var Wi16h = W[i - 16 * 2]
-    var Wi16l = W[i - 16 * 2 + 1]
-
-    var Wil = (gamma0l + Wi7l) | 0
-    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
-    Wil = (Wil + gamma1l) | 0
-    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
-    Wil = (Wil + Wi16l) | 0
-    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
-
-    W[i] = Wih
-    W[i + 1] = Wil
-  }
-
-  for (var j = 0; j < 160; j += 2) {
-    Wih = W[j]
-    Wil = W[j + 1]
-
-    var majh = maj(ah, bh, ch)
-    var majl = maj(al, bl, cl)
-
-    var sigma0h = sigma0(ah, al)
-    var sigma0l = sigma0(al, ah)
-    var sigma1h = sigma1(eh, el)
-    var sigma1l = sigma1(el, eh)
-
-    // t1 = h + sigma1 + ch + K[j] + W[j]
-    var Kih = K[j]
-    var Kil = K[j + 1]
-
-    var chh = Ch(eh, fh, gh)
-    var chl = Ch(el, fl, gl)
-
-    var t1l = (hl + sigma1l) | 0
-    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
-    t1l = (t1l + chl) | 0
-    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
-    t1l = (t1l + Kil) | 0
-    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
-    t1l = (t1l + Wil) | 0
-    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
-
-    // t2 = sigma0 + maj
-    var t2l = (sigma0l + majl) | 0
-    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
-
-    hh = gh
-    hl = gl
-    gh = fh
-    gl = fl
-    fh = eh
-    fl = el
-    el = (dl + t1l) | 0
-    eh = (dh + t1h + getCarry(el, dl)) | 0
-    dh = ch
-    dl = cl
-    ch = bh
-    cl = bl
-    bh = ah
-    bl = al
-    al = (t1l + t2l) | 0
-    ah = (t1h + t2h + getCarry(al, t1l)) | 0
-  }
-
-  this._al = (this._al + al) | 0
-  this._bl = (this._bl + bl) | 0
-  this._cl = (this._cl + cl) | 0
-  this._dl = (this._dl + dl) | 0
-  this._el = (this._el + el) | 0
-  this._fl = (this._fl + fl) | 0
-  this._gl = (this._gl + gl) | 0
-  this._hl = (this._hl + hl) | 0
-
-  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
-  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
-  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
-  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
-  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
-  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
-  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
-  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
-}
-
-Sha512.prototype._hash = function () {
-  var H = Buffer.allocUnsafe(64)
-
-  function writeInt64BE (h, l, offset) {
-    H.writeInt32BE(h, offset)
-    H.writeInt32BE(l, offset + 4)
-  }
-
-  writeInt64BE(this._ah, this._al, 0)
-  writeInt64BE(this._bh, this._bl, 8)
-  writeInt64BE(this._ch, this._cl, 16)
-  writeInt64BE(this._dh, this._dl, 24)
-  writeInt64BE(this._eh, this._el, 32)
-  writeInt64BE(this._fh, this._fl, 40)
-  writeInt64BE(this._gh, this._gl, 48)
-  writeInt64BE(this._hh, this._hl, 56)
-
-  return H
-}
-
-module.exports = Sha512
-
-},{"./hash":129,"inherits":121,"safe-buffer":128}],137:[function(require,module,exports){
-var native = require('./native')
-
-function getTypeName (fn) {
-  return fn.name || fn.toString().match(/function (.*?)\s*\(/)[1]
-}
-
-function getValueTypeName (value) {
-  return native.Nil(value) ? '' : getTypeName(value.constructor)
-}
-
-function getValue (value) {
-  if (native.Function(value)) return ''
-  if (native.String(value)) return JSON.stringify(value)
-  if (value && native.Object(value)) return ''
-  return value
-}
-
-function tfJSON (type) {
-  if (native.Function(type)) return type.toJSON ? type.toJSON() : getTypeName(type)
-  if (native.Array(type)) return 'Array'
-  if (type && native.Object(type)) return 'Object'
-
-  return type !== undefined ? type : ''
-}
-
-function tfErrorString (type, value, valueTypeName) {
-  var valueJson = getValue(value)
-
-  return 'Expected ' + tfJSON(type) + ', got' +
-    (valueTypeName !== '' ? ' ' + valueTypeName : '') +
-    (valueJson !== '' ? ' ' + valueJson : '')
-}
-
-function TfTypeError (type, value, valueTypeName) {
-  valueTypeName = valueTypeName || getValueTypeName(value)
-  this.message = tfErrorString(type, value, valueTypeName)
-
-  Error.captureStackTrace(this, TfTypeError)
-  this.__type = type
-  this.__value = value
-  this.__valueTypeName = valueTypeName
-}
-
-TfTypeError.prototype = Object.create(Error.prototype)
-TfTypeError.prototype.constructor = TfTypeError
-
-function tfPropertyErrorString (type, label, name, value, valueTypeName) {
-  var description = '" of type '
-  if (label === 'key') description = '" with key type '
-
-  return tfErrorString('property "' + tfJSON(name) + description + tfJSON(type), value, valueTypeName)
-}
-
-function TfPropertyTypeError (type, property, label, value, valueTypeName) {
-  if (type) {
-    valueTypeName = valueTypeName || getValueTypeName(value)
-    this.message = tfPropertyErrorString(type, label, property, value, valueTypeName)
-  } else {
-    this.message = 'Unexpected property "' + property + '"'
-  }
-
-  Error.captureStackTrace(this, TfTypeError)
-  this.__label = label
-  this.__property = property
-  this.__type = type
-  this.__value = value
-  this.__valueTypeName = valueTypeName
-}
-
-TfPropertyTypeError.prototype = Object.create(Error.prototype)
-TfPropertyTypeError.prototype.constructor = TfTypeError
-
-function tfCustomError (expected, actual) {
-  return new TfTypeError(expected, {}, actual)
-}
-
-function tfSubError (e, property, label) {
-  // sub child?
-  if (e instanceof TfPropertyTypeError) {
-    property = property + '.' + e.__property
-
-    e = new TfPropertyTypeError(
-      e.__type, property, e.__label, e.__value, e.__valueTypeName
-    )
-
-  // child?
-  } else if (e instanceof TfTypeError) {
-    e = new TfPropertyTypeError(
-      e.__type, property, label, e.__value, e.__valueTypeName
-    )
-  }
-
-  Error.captureStackTrace(e)
-  return e
-}
-
-module.exports = {
-  TfTypeError: TfTypeError,
-  TfPropertyTypeError: TfPropertyTypeError,
-  tfCustomError: tfCustomError,
-  tfSubError: tfSubError,
-  tfJSON: tfJSON,
-  getValueTypeName: getValueTypeName
-}
-
-},{"./native":140}],138:[function(require,module,exports){
-(function (Buffer){
-var NATIVE = require('./native')
-var ERRORS = require('./errors')
-
-function _Buffer (value) {
-  return Buffer.isBuffer(value)
-}
-
-function Hex (value) {
-  return typeof value === 'string' && /^([0-9a-f]{2})+$/i.test(value)
-}
-
-function _LengthN (type, length) {
-  var name = type.toJSON()
-
-  function Length (value) {
-    if (!type(value)) return false
-    if (value.length === length) return true
-
-    throw ERRORS.tfCustomError(name + '(Length: ' + length + ')', name + '(Length: ' + value.length + ')')
-  }
-  Length.toJSON = function () { return name }
-
-  return Length
-}
-
-var _ArrayN = _LengthN.bind(null, NATIVE.Array)
-var _BufferN = _LengthN.bind(null, _Buffer)
-var _HexN = _LengthN.bind(null, Hex)
-var _StringN = _LengthN.bind(null, NATIVE.String)
-
-var UINT53_MAX = Math.pow(2, 53) - 1
-
-function Finite (value) {
-  return typeof value === 'number' && isFinite(value)
-}
-function Int8 (value) { return ((value << 24) >> 24) === value }
-function Int16 (value) { return ((value << 16) >> 16) === value }
-function Int32 (value) { return (value | 0) === value }
-function UInt8 (value) { return (value & 0xff) === value }
-function UInt16 (value) { return (value & 0xffff) === value }
-function UInt32 (value) { return (value >>> 0) === value }
-function UInt53 (value) {
-  return typeof value === 'number' &&
-    value >= 0 &&
-    value <= UINT53_MAX &&
-    Math.floor(value) === value
-}
-
-var types = {
-  ArrayN: _ArrayN,
-  Buffer: _Buffer,
-  BufferN: _BufferN,
-  Finite: Finite,
-  Hex: Hex,
-  HexN: _HexN,
-  Int8: Int8,
-  Int16: Int16,
-  Int32: Int32,
-  StringN: _StringN,
-  UInt8: UInt8,
-  UInt16: UInt16,
-  UInt32: UInt32,
-  UInt53: UInt53
-}
-
-for (var typeName in types) {
-  types[typeName].toJSON = function (t) {
-    return t
-  }.bind(null, typeName)
-}
-
-module.exports = types
-
-}).call(this,{"isBuffer":require("../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
-},{"../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"./errors":137,"./native":140}],139:[function(require,module,exports){
-var ERRORS = require('./errors')
-var NATIVE = require('./native')
-
-// short-hand
-var tfJSON = ERRORS.tfJSON
-var TfTypeError = ERRORS.TfTypeError
-var TfPropertyTypeError = ERRORS.TfPropertyTypeError
-var tfSubError = ERRORS.tfSubError
-var getValueTypeName = ERRORS.getValueTypeName
-
-var TYPES = {
-  arrayOf: function arrayOf (type) {
-    type = compile(type)
-
-    function _arrayOf (array, strict) {
-      if (!NATIVE.Array(array)) return false
-      if (NATIVE.Nil(array)) return false
-
-      return array.every(function (value, i) {
-        try {
-          return typeforce(type, value, strict)
-        } catch (e) {
-          throw tfSubError(e, i)
-        }
-      })
-    }
-    _arrayOf.toJSON = function () { return '[' + tfJSON(type) + ']' }
-
-    return _arrayOf
-  },
-
-  maybe: function maybe (type) {
-    type = compile(type)
-
-    function _maybe (value, strict) {
-      return NATIVE.Nil(value) || type(value, strict, maybe)
-    }
-    _maybe.toJSON = function () { return '?' + tfJSON(type) }
-
-    return _maybe
-  },
-
-  map: function map (propertyType, propertyKeyType) {
-    propertyType = compile(propertyType)
-    if (propertyKeyType) propertyKeyType = compile(propertyKeyType)
-
-    function _map (value, strict) {
-      if (!NATIVE.Object(value)) return false
-      if (NATIVE.Nil(value)) return false
-
-      for (var propertyName in value) {
-        try {
-          if (propertyKeyType) {
-            typeforce(propertyKeyType, propertyName, strict)
-          }
-        } catch (e) {
-          throw tfSubError(e, propertyName, 'key')
-        }
-
-        try {
-          var propertyValue = value[propertyName]
-          typeforce(propertyType, propertyValue, strict)
-        } catch (e) {
-          throw tfSubError(e, propertyName)
-        }
-      }
-
-      return true
-    }
-
-    if (propertyKeyType) {
-      _map.toJSON = function () {
-        return '{' + tfJSON(propertyKeyType) + ': ' + tfJSON(propertyType) + '}'
-      }
-    } else {
-      _map.toJSON = function () { return '{' + tfJSON(propertyType) + '}' }
-    }
-
-    return _map
-  },
-
-  object: function object (uncompiled) {
-    var type = {}
-
-    for (var typePropertyName in uncompiled) {
-      type[typePropertyName] = compile(uncompiled[typePropertyName])
-    }
-
-    function _object (value, strict) {
-      if (!NATIVE.Object(value)) return false
-      if (NATIVE.Nil(value)) return false
-
-      var propertyName
-
-      try {
-        for (propertyName in type) {
-          var propertyType = type[propertyName]
-          var propertyValue = value[propertyName]
-
-          typeforce(propertyType, propertyValue, strict)
-        }
-      } catch (e) {
-        throw tfSubError(e, propertyName)
-      }
-
-      if (strict) {
-        for (propertyName in value) {
-          if (type[propertyName]) continue
-
-          throw new TfPropertyTypeError(undefined, propertyName)
-        }
-      }
-
-      return true
-    }
-    _object.toJSON = function () { return tfJSON(type) }
-
-    return _object
-  },
-
-  oneOf: function oneOf () {
-    var types = [].slice.call(arguments).map(compile)
-
-    function _oneOf (value, strict) {
-      return types.some(function (type) {
-        try {
-          return typeforce(type, value, strict)
-        } catch (e) {
-          return false
-        }
-      })
-    }
-    _oneOf.toJSON = function () { return types.map(tfJSON).join('|') }
-
-    return _oneOf
-  },
-
-  quacksLike: function quacksLike (type) {
-    function _quacksLike (value) {
-      return type === getValueTypeName(value)
-    }
-    _quacksLike.toJSON = function () { return type }
-
-    return _quacksLike
-  },
-
-  tuple: function tuple () {
-    var types = [].slice.call(arguments).map(compile)
-
-    function _tuple (values, strict) {
-      if (NATIVE.Nil(values)) return false
-      if (NATIVE.Nil(values.length)) return false
-      if (strict && (values.length !== types.length)) return false
-
-      return types.every(function (type, i) {
-        try {
-          return typeforce(type, values[i], strict)
-        } catch (e) {
-          throw tfSubError(e, i)
-        }
-      })
-    }
-    _tuple.toJSON = function () { return '(' + types.map(tfJSON).join(', ') + ')' }
-
-    return _tuple
-  },
-
-  value: function value (expected) {
-    function _value (actual) {
-      return actual === expected
-    }
-    _value.toJSON = function () { return expected }
-
-    return _value
-  }
-}
-
-function compile (type) {
-  if (NATIVE.String(type)) {
-    if (type[0] === '?') return TYPES.maybe(type.slice(1))
-
-    return NATIVE[type] || TYPES.quacksLike(type)
-  } else if (type && NATIVE.Object(type)) {
-    if (NATIVE.Array(type)) return TYPES.arrayOf(type[0])
-
-    return TYPES.object(type)
-  } else if (NATIVE.Function(type)) {
-    return type
-  }
-
-  return TYPES.value(type)
-}
-
-function typeforce (type, value, strict, surrogate) {
-  if (NATIVE.Function(type)) {
-    if (type(value, strict)) return true
-
-    throw new TfTypeError(surrogate || type, value)
-  }
-
-  // JIT
-  return typeforce(compile(type), value, strict)
-}
-
-// assign types to typeforce function
-for (var typeName in NATIVE) {
-  typeforce[typeName] = NATIVE[typeName]
-}
-
-for (typeName in TYPES) {
-  typeforce[typeName] = TYPES[typeName]
-}
-
-var EXTRA = require('./extra')
-for (typeName in EXTRA) {
-  typeforce[typeName] = EXTRA[typeName]
-}
-
-// async wrapper
-function __async (type, value, strict, callback) {
-  // default to falsy strict if using shorthand overload
-  if (typeof strict === 'function') return __async(type, value, false, strict)
-
-  try {
-    typeforce(type, value, strict)
-  } catch (e) {
-    return callback(e)
-  }
-
-  callback()
-}
-
-typeforce.async = __async
-typeforce.compile = compile
-typeforce.TfTypeError = TfTypeError
-typeforce.TfPropertyTypeError = TfPropertyTypeError
-
-module.exports = typeforce
-
-},{"./errors":137,"./extra":138,"./native":140}],140:[function(require,module,exports){
-var types = {
-  Array: function (value) { return value !== null && value !== undefined && value.constructor === Array },
-  Boolean: function (value) { return typeof value === 'boolean' },
-  Function: function (value) { return typeof value === 'function' },
-  Nil: function (value) { return value === undefined || value === null },
-  Number: function (value) { return typeof value === 'number' },
-  Object: function (value) { return typeof value === 'object' },
-  String: function (value) { return typeof value === 'string' },
-  '': function () { return true }
-}
-
-// TODO: deprecate
-types.Null = types.Nil
-
-for (var typeName in types) {
-  types[typeName].toJSON = function (t) {
-    return t
-  }.bind(null, typeName)
-}
-
-module.exports = types
-
-},{}],141:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-
-// Number.MAX_SAFE_INTEGER
-var MAX_SAFE_INTEGER = 9007199254740991
-
-function checkUInt53 (n) {
-  if (n < 0 || n > MAX_SAFE_INTEGER || n % 1 !== 0) throw new RangeError('value out of range')
-}
-
-function encode (number, buffer, offset) {
-  checkUInt53(number)
-
-  if (!buffer) buffer = new Buffer(encodingLength(number))
-  if (!Buffer.isBuffer(buffer)) throw new TypeError('buffer must be a Buffer instance')
-  if (!offset) offset = 0
-
-  // 8 bit
-  if (number < 0xfd) {
-    buffer.writeUInt8(number, offset)
-    encode.bytes = 1
-
-  // 16 bit
-  } else if (number <= 0xffff) {
-    buffer.writeUInt8(0xfd, offset)
-    buffer.writeUInt16LE(number, offset + 1)
-    encode.bytes = 3
-
-  // 32 bit
-  } else if (number <= 0xffffffff) {
-    buffer.writeUInt8(0xfe, offset)
-    buffer.writeUInt32LE(number, offset + 1)
-    encode.bytes = 5
-
-  // 64 bit
-  } else {
-    buffer.writeUInt8(0xff, offset)
-    buffer.writeUInt32LE(number >>> 0, offset + 1)
-    buffer.writeUInt32LE((number / 0x100000000) | 0, offset + 5)
-    encode.bytes = 9
-  }
-
-  return buffer
-}
-
-function decode (buffer, offset) {
-  if (!Buffer.isBuffer(buffer)) throw new TypeError('buffer must be a Buffer instance')
-  if (!offset) offset = 0
-
-  var first = buffer.readUInt8(offset)
-
-  // 8 bit
-  if (first < 0xfd) {
-    decode.bytes = 1
-    return first
-
-  // 16 bit
-  } else if (first === 0xfd) {
-    decode.bytes = 3
-    return buffer.readUInt16LE(offset + 1)
-
-  // 32 bit
-  } else if (first === 0xfe) {
-    decode.bytes = 5
-    return buffer.readUInt32LE(offset + 1)
-
-  // 64 bit
-  } else {
-    decode.bytes = 9
-    var lo = buffer.readUInt32LE(offset + 1)
-    var hi = buffer.readUInt32LE(offset + 5)
-    var number = hi * 0x0100000000 + lo
-    checkUInt53(number)
-
-    return number
-  }
-}
-
-function encodingLength (number) {
-  checkUInt53(number)
-
-  return (
-    number < 0xfd ? 1
-  : number <= 0xffff ? 3
-  : number <= 0xffffffff ? 5
-  : 9
-  )
-}
-
-module.exports = { encode: encode, decode: decode, encodingLength: encodingLength }
-
-}).call(this,require("buffer").Buffer)
-},{"buffer":5}],142:[function(require,module,exports){
-(function (Buffer){
-var bs58check = require('bs58check')
-
-function decodeRaw (buffer, version) {
-  // check version only if defined
-  if (version !== undefined && buffer[0] !== version) throw new Error('Invalid network version')
-
-  // uncompressed
-  if (buffer.length === 33) {
-    return {
-      version: buffer[0],
-      privateKey: buffer.slice(1, 33),
-      compressed: false
-    }
-  }
-
-  // invalid length
-  if (buffer.length !== 34) throw new Error('Invalid WIF length')
-
-  // invalid compression flag
-  if (buffer[33] !== 0x01) throw new Error('Invalid compression flag')
-
-  return {
-    version: buffer[0],
-    privateKey: buffer.slice(1, 33),
-    compressed: true
-  }
-}
-
-function encodeRaw (version, privateKey, compressed) {
-  var result = new Buffer(compressed ? 34 : 33)
-
-  result.writeUInt8(version, 0)
-  privateKey.copy(result, 1)
-
-  if (compressed) {
-    result[33] = 0x01
-  }
-
-  return result
-}
-
-function decode (string, version) {
-  return decodeRaw(bs58check.decode(string), version)
-}
-
-function encode (version, privateKey, compressed) {
-  if (typeof version === 'number') return bs58check.encode(encodeRaw(version, privateKey, compressed))
-
-  return bs58check.encode(
-    encodeRaw(
-      version.version,
-      version.privateKey,
-      version.compressed
-    )
-  )
-}
-
-module.exports = {
-  decode: decode,
-  decodeRaw: decodeRaw,
-  encode: encode,
-  encodeRaw: encodeRaw
-}
-
-}).call(this,require("buffer").Buffer)
-},{"bs58check":85,"buffer":5}]},{},[34])(34)
-});</script>
-        <script>bitcoinjs.bitcoin.networks.shadow = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0xEE80286A,
-    private: 0xEE8031E8
-  },
-  pubKeyHash: 0x3f,
-  scriptHash: 0x7d,
-  wif: 0xbf
-};
-
-bitcoinjs.bitcoin.networks.shadowtn = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x76C0FDFB,
-    private: 0x76C1077A
-  },
-  pubKeyHash: 0x7f,
-  scriptHash: 0xc4,
-  wif: 0xff
-};
-
-bitcoinjs.bitcoin.networks.clam = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0xa8c26d64,
-    private: 0xa8c17826
-  },
-  pubKeyHash: 0x89,
-  scriptHash: 0x00, // TODO set this correctly
-  wif: 0x85
-};
-
-bitcoinjs.bitcoin.networks.crown = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x00,
-  scriptHash: 0x05,
-  wif: 0x80
-};
-
-bitcoinjs.bitcoin.networks.dash = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x4c,
-  scriptHash: 0x10,
-  wif: 0xcc
-};
-
-bitcoinjs.bitcoin.networks.maza = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x32,
-  scriptHash: 0x09,
-  wif: 0xe0
-};
-
-bitcoinjs.bitcoin.networks.dashtn = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x043587cf,
-    private: 0x04358394
-  },
-  pubKeyHash: 0x8c,
-  scriptHash: 0x13,
-  wif: 0xef
-};
-
-bitcoinjs.bitcoin.networks.game = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x26,
-  scriptHash: 0x05,
-  wif: 0xa6
-};
-
-bitcoinjs.bitcoin.networks.namecoin = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x34,
-  scriptHash: 0x00, // TODO set this correctly
-  wif: 0x80
-};
-
-bitcoinjs.bitcoin.networks.peercoin = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x37,
-  scriptHash: 0x00, // TODO set this correctly
-  wif: 0xb7
-};
-
-bitcoinjs.bitcoin.networks.axe = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x4B,
-  scriptHash: 0xCB, // TODO set this correctly
-  wif: 0xCB
-};
-
-bitcoinjs.bitcoin.networks.slimcoin = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0xef6adf10,
-    private: 0xef69ea80
-  },
-  pubKeyHash: 0x3f,
-  scriptHash: 0x7d,
-  wif: 0x46
-};
-
-bitcoinjs.bitcoin.networks.slimcointn = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x043587CF,
-    private: 0x04358394
-  },
-  pubKeyHash: 0x6f,
-  scriptHash: 0xc4,
-  wif: 0x57
-};
-
-bitcoinjs.bitcoin.networks.denarius = {
-  messagePrefix: '\x19Denarius Signed Message:\n',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x1e,
-  scriptHash: 0x5a,
-  wif: 0x9e
-};
-
-bitcoinjs.bitcoin.networks.dogecoin = {
-  messagePrefix: '\x19Dogecoin Signed Message:\n',
-  bip32: {
-    public: 0x02facafd,
-    private: 0x02fac398
-  },
-  pubKeyHash: 0x1e,
-  scriptHash: 0x16,
-  wif: 0x9e
-};
-
-bitcoinjs.bitcoin.networks.viacoin = {
-  messagePrefix: '\x18Viacoin Signed Message:\n',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x47,
-  scriptHash: 0x21,
-  wif: 0xc7
-};
-
-bitcoinjs.bitcoin.networks.viacointestnet = {
-  messagePrefix: '\x18Viacoin Signed Message:\n',
-  bip32: {
-    public: 0x043587cf,
-    private: 0x04358394
-  },
-  pubKeyHash: 0x7f,
-  scriptHash: 0xc4,
-  wif: 0xff
-};
-
-bitcoinjs.bitcoin.networks.gamerscoin = {
-  messagePrefix: '\x19Gamerscoin Signed Message:\n',
-  bip32: {
-    public: 0x019da462,
-    private: 0x019d9cfe
-  },
-  pubKeyHash: 0x26,
-  scriptHash: 0x05,
-  wif: 0xA6
-};
-
-bitcoinjs.bitcoin.networks.jumbucks = {
-  messagePrefix: '\x19Jumbucks Signed Message:\n',
-  bip32: {
-    public: 0x037a689a,
-    private: 0x037a6460
-  },
-  pubKeyHash: 0x2b,
-  scriptHash: 0x05,
-  wif: 0xab
-};
-
-bitcoinjs.bitcoin.networks.zetacoin = {
-  messagePrefix: '\x18Zetacoin Signed Message:\n',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x50,
-  scriptHash: 0x09,
-  wif: 0xe0
-};
-
-bitcoinjs.bitcoin.networks.myriadcoin = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x32,
-  scriptHash: 0x00, // TODO set this correctly
-  wif: 0xb2
-};
-
-
-bitcoinjs.bitcoin.networks.onixcoin = {
-    messagePrefix: 'unused',
-    bip32: {
-      public: 0x049d7cb2,
-      private: 0x049d7878
-    },
-    pubKeyHash: 0x4B,
-    scriptHash: 0x05,
-    wif: 0x80
-};
-
-bitcoinjs.bitcoin.networks.pivx = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x022d2533,
-    private: 0x0221312b
-  },
-  pubKeyHash: 0x1e,
-  scriptHash: 0x0d,
-  wif: 0xd4
-};
-
-bitcoinjs.bitcoin.networks.pivxtestnet = {
-  messagePrefix: 'unused',
-  bip32: {
-    public: 0x3a8061a0,
-    private: 0x3a805837
-  },
-  pubKeyHash: 0x8b,
-  scriptHash: 0x13,
-  wif: 0xef
-};
-
-bitcoinjs.bitcoin.networks.fujicoin = {
-  messagePrefix: '\x19FujiCoin Signed Message:\n',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x24,
-  scriptHash: 0x10,
-  wif: 0xa4
-};
-
-bitcoinjs.bitcoin.networks.nubits = {
-  messagePrefix: '\x18Nu Signed Message:\n',
-  bip32: {
-    public: 0x0488b21e,
-    private: 0x0488ade4
-  },
-  pubKeyHash: 0x19,
-  scriptHash: 0x1a,
-  wif: 0x96,
-};
-
-bitcoinjs.bitcoin.networks.bgold = {
-  messagePrefix: 'unused',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4
-    },
-    pubKeyHash: 38,
-    scriptHash: 23,
-    wif: 128
-};
-
-bitcoinjs.bitcoin.networks.bitcoinCashBitbpay = {
-    messagePrefix: '\x18Bitcoin Signed Message:\n',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4
-    },
-    pubKeyHash: 0x1c,
-    scriptHash: 0x28,
-    wif: 0x80
-};
-
-bitcoinjs.bitcoin.networks.monacoin = {
-    messagePrefix: '\x18Monacoin Signed Message:\n',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4
-    },
-    pubKeyHash: 0x32,
-    scriptHash: 0x37,
-    wif: 0xb0
-};
-
-bitcoinjs.bitcoin.networks.litecoinXprv = {
-    messagePrefix: '\x19Litecoin Signed Message:\n',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4,
-    },
-    pubKeyHash: 0x30,
-    scriptHash: 0x32,
-    wif: 0xb0
-};
-
-bitcoinjs.bitcoin.networks.komodo = {
-  messagePrefix: '\x18Komodo Signed Message:\n',
-  bip32: {
-    public: 0x0488B21E,
-    private: 0x0488ADE4
-  },
-  pubKeyHash: 0x3c,
-  scriptHash: 0x55,
-  wif: 0xbc
-};
-</script>
-        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bitcoinjsBip38 = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-var asn1 = exports;
-
-asn1.bignum = require('bn.js');
-
-asn1.define = require('./asn1/api').define;
-asn1.base = require('./asn1/base');
-asn1.constants = require('./asn1/constants');
-asn1.decoders = require('./asn1/decoders');
-asn1.encoders = require('./asn1/encoders');
-
-},{"./asn1/api":2,"./asn1/base":4,"./asn1/constants":8,"./asn1/decoders":10,"./asn1/encoders":13,"bn.js":17}],2:[function(require,module,exports){
-var asn1 = require('../asn1');
-var inherits = require('inherits');
-
-var api = exports;
-
-api.define = function define(name, body) {
-  return new Entity(name, body);
-};
-
-function Entity(name, body) {
-  this.name = name;
-  this.body = body;
-
-  this.decoders = {};
-  this.encoders = {};
-};
-
-Entity.prototype._createNamed = function createNamed(base) {
-  var named;
-  try {
-    named = require('vm').runInThisContext(
-      '(function ' + this.name + '(entity) {\n' +
-      '  this._initNamed(entity);\n' +
-      '})'
-    );
-  } catch (e) {
-    named = function (entity) {
-      this._initNamed(entity);
-    };
-  }
-  inherits(named, base);
-  named.prototype._initNamed = function initnamed(entity) {
-    base.call(this, entity);
-  };
-
-  return new named(this);
-};
-
-Entity.prototype._getDecoder = function _getDecoder(enc) {
-  enc = enc || 'der';
-  // Lazily create decoder
-  if (!this.decoders.hasOwnProperty(enc))
-    this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
-  return this.decoders[enc];
-};
-
-Entity.prototype.decode = function decode(data, enc, options) {
-  return this._getDecoder(enc).decode(data, options);
-};
-
-Entity.prototype._getEncoder = function _getEncoder(enc) {
-  enc = enc || 'der';
-  // Lazily create encoder
-  if (!this.encoders.hasOwnProperty(enc))
-    this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
-  return this.encoders[enc];
-};
-
-Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
-  return this._getEncoder(enc).encode(data, reporter);
-};
-
-},{"../asn1":1,"inherits":95,"vm":149}],3:[function(require,module,exports){
-var inherits = require('inherits');
-var Reporter = require('../base').Reporter;
-var Buffer = require('buffer').Buffer;
-
-function DecoderBuffer(base, options) {
-  Reporter.call(this, options);
-  if (!Buffer.isBuffer(base)) {
-    this.error('Input not Buffer');
-    return;
-  }
-
-  this.base = base;
-  this.offset = 0;
-  this.length = base.length;
-}
-inherits(DecoderBuffer, Reporter);
-exports.DecoderBuffer = DecoderBuffer;
-
-DecoderBuffer.prototype.save = function save() {
-  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
-};
-
-DecoderBuffer.prototype.restore = function restore(save) {
-  // Return skipped data
-  var res = new DecoderBuffer(this.base);
-  res.offset = save.offset;
-  res.length = this.offset;
-
-  this.offset = save.offset;
-  Reporter.prototype.restore.call(this, save.reporter);
-
-  return res;
-};
-
-DecoderBuffer.prototype.isEmpty = function isEmpty() {
-  return this.offset === this.length;
-};
-
-DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
-  if (this.offset + 1 <= this.length)
-    return this.base.readUInt8(this.offset++, true);
-  else
-    return this.error(fail || 'DecoderBuffer overrun');
-}
-
-DecoderBuffer.prototype.skip = function skip(bytes, fail) {
-  if (!(this.offset + bytes <= this.length))
-    return this.error(fail || 'DecoderBuffer overrun');
-
-  var res = new DecoderBuffer(this.base);
-
-  // Share reporter state
-  res._reporterState = this._reporterState;
-
-  res.offset = this.offset;
-  res.length = this.offset + bytes;
-  this.offset += bytes;
-  return res;
-}
-
-DecoderBuffer.prototype.raw = function raw(save) {
-  return this.base.slice(save ? save.offset : this.offset, this.length);
-}
-
-function EncoderBuffer(value, reporter) {
-  if (Array.isArray(value)) {
-    this.length = 0;
-    this.value = value.map(function(item) {
-      if (!(item instanceof EncoderBuffer))
-        item = new EncoderBuffer(item, reporter);
-      this.length += item.length;
-      return item;
-    }, this);
-  } else if (typeof value === 'number') {
-    if (!(0 <= value && value <= 0xff))
-      return reporter.error('non-byte EncoderBuffer value');
-    this.value = value;
-    this.length = 1;
-  } else if (typeof value === 'string') {
-    this.value = value;
-    this.length = Buffer.byteLength(value);
-  } else if (Buffer.isBuffer(value)) {
-    this.value = value;
-    this.length = value.length;
-  } else {
-    return reporter.error('Unsupported type: ' + typeof value);
-  }
-}
-exports.EncoderBuffer = EncoderBuffer;
-
-EncoderBuffer.prototype.join = function join(out, offset) {
-  if (!out)
-    out = new Buffer(this.length);
-  if (!offset)
-    offset = 0;
-
-  if (this.length === 0)
-    return out;
-
-  if (Array.isArray(this.value)) {
-    this.value.forEach(function(item) {
-      item.join(out, offset);
-      offset += item.length;
-    });
-  } else {
-    if (typeof this.value === 'number')
-      out[offset] = this.value;
-    else if (typeof this.value === 'string')
-      out.write(this.value, offset);
-    else if (Buffer.isBuffer(this.value))
-      this.value.copy(out, offset);
-    offset += this.length;
-  }
-
-  return out;
-};
-
-},{"../base":4,"buffer":47,"inherits":95}],4:[function(require,module,exports){
-var base = exports;
-
-base.Reporter = require('./reporter').Reporter;
-base.DecoderBuffer = require('./buffer').DecoderBuffer;
-base.EncoderBuffer = require('./buffer').EncoderBuffer;
-base.Node = require('./node');
-
-},{"./buffer":3,"./node":5,"./reporter":6}],5:[function(require,module,exports){
-var Reporter = require('../base').Reporter;
-var EncoderBuffer = require('../base').EncoderBuffer;
-var DecoderBuffer = require('../base').DecoderBuffer;
-var assert = require('minimalistic-assert');
-
-// Supported tags
-var tags = [
-  'seq', 'seqof', 'set', 'setof', 'objid', 'bool',
-  'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc',
-  'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str',
-  'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr'
-];
-
-// Public methods list
-var methods = [
-  'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice',
-  'any', 'contains'
-].concat(tags);
-
-// Overrided methods list
-var overrided = [
-  '_peekTag', '_decodeTag', '_use',
-  '_decodeStr', '_decodeObjid', '_decodeTime',
-  '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList',
-
-  '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime',
-  '_encodeNull', '_encodeInt', '_encodeBool'
-];
-
-function Node(enc, parent) {
-  var state = {};
-  this._baseState = state;
-
-  state.enc = enc;
-
-  state.parent = parent || null;
-  state.children = null;
-
-  // State
-  state.tag = null;
-  state.args = null;
-  state.reverseArgs = null;
-  state.choice = null;
-  state.optional = false;
-  state.any = false;
-  state.obj = false;
-  state.use = null;
-  state.useDecoder = null;
-  state.key = null;
-  state['default'] = null;
-  state.explicit = null;
-  state.implicit = null;
-  state.contains = null;
-
-  // Should create new instance on each method
-  if (!state.parent) {
-    state.children = [];
-    this._wrap();
-  }
-}
-module.exports = Node;
-
-var stateProps = [
-  'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice',
-  'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit',
-  'implicit', 'contains'
-];
-
-Node.prototype.clone = function clone() {
-  var state = this._baseState;
-  var cstate = {};
-  stateProps.forEach(function(prop) {
-    cstate[prop] = state[prop];
-  });
-  var res = new this.constructor(cstate.parent);
-  res._baseState = cstate;
-  return res;
-};
-
-Node.prototype._wrap = function wrap() {
-  var state = this._baseState;
-  methods.forEach(function(method) {
-    this[method] = function _wrappedMethod() {
-      var clone = new this.constructor(this);
-      state.children.push(clone);
-      return clone[method].apply(clone, arguments);
-    };
-  }, this);
-};
-
-Node.prototype._init = function init(body) {
-  var state = this._baseState;
-
-  assert(state.parent === null);
-  body.call(this);
-
-  // Filter children
-  state.children = state.children.filter(function(child) {
-    return child._baseState.parent === this;
-  }, this);
-  assert.equal(state.children.length, 1, 'Root node can have only one child');
-};
-
-Node.prototype._useArgs = function useArgs(args) {
-  var state = this._baseState;
-
-  // Filter children and args
-  var children = args.filter(function(arg) {
-    return arg instanceof this.constructor;
-  }, this);
-  args = args.filter(function(arg) {
-    return !(arg instanceof this.constructor);
-  }, this);
-
-  if (children.length !== 0) {
-    assert(state.children === null);
-    state.children = children;
-
-    // Replace parent to maintain backward link
-    children.forEach(function(child) {
-      child._baseState.parent = this;
-    }, this);
-  }
-  if (args.length !== 0) {
-    assert(state.args === null);
-    state.args = args;
-    state.reverseArgs = args.map(function(arg) {
-      if (typeof arg !== 'object' || arg.constructor !== Object)
-        return arg;
-
-      var res = {};
-      Object.keys(arg).forEach(function(key) {
-        if (key == (key | 0))
-          key |= 0;
-        var value = arg[key];
-        res[value] = key;
-      });
-      return res;
-    });
-  }
-};
-
-//
-// Overrided methods
-//
-
-overrided.forEach(function(method) {
-  Node.prototype[method] = function _overrided() {
-    var state = this._baseState;
-    throw new Error(method + ' not implemented for encoding: ' + state.enc);
-  };
-});
-
-//
-// Public methods
-//
-
-tags.forEach(function(tag) {
-  Node.prototype[tag] = function _tagMethod() {
-    var state = this._baseState;
-    var args = Array.prototype.slice.call(arguments);
-
-    assert(state.tag === null);
-    state.tag = tag;
-
-    this._useArgs(args);
-
-    return this;
-  };
-});
-
-Node.prototype.use = function use(item) {
-  assert(item);
-  var state = this._baseState;
-
-  assert(state.use === null);
-  state.use = item;
-
-  return this;
-};
-
-Node.prototype.optional = function optional() {
-  var state = this._baseState;
-
-  state.optional = true;
-
-  return this;
-};
-
-Node.prototype.def = function def(val) {
-  var state = this._baseState;
-
-  assert(state['default'] === null);
-  state['default'] = val;
-  state.optional = true;
-
-  return this;
-};
-
-Node.prototype.explicit = function explicit(num) {
-  var state = this._baseState;
-
-  assert(state.explicit === null && state.implicit === null);
-  state.explicit = num;
-
-  return this;
-};
-
-Node.prototype.implicit = function implicit(num) {
-  var state = this._baseState;
-
-  assert(state.explicit === null && state.implicit === null);
-  state.implicit = num;
-
-  return this;
-};
-
-Node.prototype.obj = function obj() {
-  var state = this._baseState;
-  var args = Array.prototype.slice.call(arguments);
-
-  state.obj = true;
-
-  if (args.length !== 0)
-    this._useArgs(args);
-
-  return this;
-};
-
-Node.prototype.key = function key(newKey) {
-  var state = this._baseState;
-
-  assert(state.key === null);
-  state.key = newKey;
-
-  return this;
-};
-
-Node.prototype.any = function any() {
-  var state = this._baseState;
-
-  state.any = true;
-
-  return this;
-};
-
-Node.prototype.choice = function choice(obj) {
-  var state = this._baseState;
-
-  assert(state.choice === null);
-  state.choice = obj;
-  this._useArgs(Object.keys(obj).map(function(key) {
-    return obj[key];
-  }));
-
-  return this;
-};
-
-Node.prototype.contains = function contains(item) {
-  var state = this._baseState;
-
-  assert(state.use === null);
-  state.contains = item;
-
-  return this;
-};
-
-//
-// Decoding
-//
-
-Node.prototype._decode = function decode(input, options) {
-  var state = this._baseState;
-
-  // Decode root node
-  if (state.parent === null)
-    return input.wrapResult(state.children[0]._decode(input, options));
-
-  var result = state['default'];
-  var present = true;
-
-  var prevKey = null;
-  if (state.key !== null)
-    prevKey = input.enterKey(state.key);
-
-  // Check if tag is there
-  if (state.optional) {
-    var tag = null;
-    if (state.explicit !== null)
-      tag = state.explicit;
-    else if (state.implicit !== null)
-      tag = state.implicit;
-    else if (state.tag !== null)
-      tag = state.tag;
-
-    if (tag === null && !state.any) {
-      // Trial and Error
-      var save = input.save();
-      try {
-        if (state.choice === null)
-          this._decodeGeneric(state.tag, input, options);
-        else
-          this._decodeChoice(input, options);
-        present = true;
-      } catch (e) {
-        present = false;
-      }
-      input.restore(save);
-    } else {
-      present = this._peekTag(input, tag, state.any);
-
-      if (input.isError(present))
-        return present;
-    }
-  }
-
-  // Push object on stack
-  var prevObj;
-  if (state.obj && present)
-    prevObj = input.enterObject();
-
-  if (present) {
-    // Unwrap explicit values
-    if (state.explicit !== null) {
-      var explicit = this._decodeTag(input, state.explicit);
-      if (input.isError(explicit))
-        return explicit;
-      input = explicit;
-    }
-
-    var start = input.offset;
-
-    // Unwrap implicit and normal values
-    if (state.use === null && state.choice === null) {
-      if (state.any)
-        var save = input.save();
-      var body = this._decodeTag(
-        input,
-        state.implicit !== null ? state.implicit : state.tag,
-        state.any
-      );
-      if (input.isError(body))
-        return body;
-
-      if (state.any)
-        result = input.raw(save);
-      else
-        input = body;
-    }
-
-    if (options && options.track && state.tag !== null)
-      options.track(input.path(), start, input.length, 'tagged');
-
-    if (options && options.track && state.tag !== null)
-      options.track(input.path(), input.offset, input.length, 'content');
-
-    // Select proper method for tag
-    if (state.any)
-      result = result;
-    else if (state.choice === null)
-      result = this._decodeGeneric(state.tag, input, options);
-    else
-      result = this._decodeChoice(input, options);
-
-    if (input.isError(result))
-      return result;
-
-    // Decode children
-    if (!state.any && state.choice === null && state.children !== null) {
-      state.children.forEach(function decodeChildren(child) {
-        // NOTE: We are ignoring errors here, to let parser continue with other
-        // parts of encoded data
-        child._decode(input, options);
-      });
-    }
-
-    // Decode contained/encoded by schema, only in bit or octet strings
-    if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) {
-      var data = new DecoderBuffer(result);
-      result = this._getUse(state.contains, input._reporterState.obj)
-          ._decode(data, options);
-    }
-  }
-
-  // Pop object
-  if (state.obj && present)
-    result = input.leaveObject(prevObj);
-
-  // Set key
-  if (state.key !== null && (result !== null || present === true))
-    input.leaveKey(prevKey, state.key, result);
-  else if (prevKey !== null)
-    input.exitKey(prevKey);
-
-  return result;
-};
-
-Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) {
-  var state = this._baseState;
-
-  if (tag === 'seq' || tag === 'set')
-    return null;
-  if (tag === 'seqof' || tag === 'setof')
-    return this._decodeList(input, tag, state.args[0], options);
-  else if (/str$/.test(tag))
-    return this._decodeStr(input, tag, options);
-  else if (tag === 'objid' && state.args)
-    return this._decodeObjid(input, state.args[0], state.args[1], options);
-  else if (tag === 'objid')
-    return this._decodeObjid(input, null, null, options);
-  else if (tag === 'gentime' || tag === 'utctime')
-    return this._decodeTime(input, tag, options);
-  else if (tag === 'null_')
-    return this._decodeNull(input, options);
-  else if (tag === 'bool')
-    return this._decodeBool(input, options);
-  else if (tag === 'objDesc')
-    return this._decodeStr(input, tag, options);
-  else if (tag === 'int' || tag === 'enum')
-    return this._decodeInt(input, state.args && state.args[0], options);
-
-  if (state.use !== null) {
-    return this._getUse(state.use, input._reporterState.obj)
-        ._decode(input, options);
-  } else {
-    return input.error('unknown tag: ' + tag);
-  }
-};
-
-Node.prototype._getUse = function _getUse(entity, obj) {
-
-  var state = this._baseState;
-  // Create altered use decoder if implicit is set
-  state.useDecoder = this._use(entity, obj);
-  assert(state.useDecoder._baseState.parent === null);
-  state.useDecoder = state.useDecoder._baseState.children[0];
-  if (state.implicit !== state.useDecoder._baseState.implicit) {
-    state.useDecoder = state.useDecoder.clone();
-    state.useDecoder._baseState.implicit = state.implicit;
-  }
-  return state.useDecoder;
-};
-
-Node.prototype._decodeChoice = function decodeChoice(input, options) {
-  var state = this._baseState;
-  var result = null;
-  var match = false;
-
-  Object.keys(state.choice).some(function(key) {
-    var save = input.save();
-    var node = state.choice[key];
-    try {
-      var value = node._decode(input, options);
-      if (input.isError(value))
-        return false;
-
-      result = { type: key, value: value };
-      match = true;
-    } catch (e) {
-      input.restore(save);
-      return false;
-    }
-    return true;
-  }, this);
-
-  if (!match)
-    return input.error('Choice not matched');
-
-  return result;
-};
-
-//
-// Encoding
-//
-
-Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) {
-  return new EncoderBuffer(data, this.reporter);
-};
-
-Node.prototype._encode = function encode(data, reporter, parent) {
-  var state = this._baseState;
-  if (state['default'] !== null && state['default'] === data)
-    return;
-
-  var result = this._encodeValue(data, reporter, parent);
-  if (result === undefined)
-    return;
-
-  if (this._skipDefault(result, reporter, parent))
-    return;
-
-  return result;
-};
-
-Node.prototype._encodeValue = function encode(data, reporter, parent) {
-  var state = this._baseState;
-
-  // Decode root node
-  if (state.parent === null)
-    return state.children[0]._encode(data, reporter || new Reporter());
-
-  var result = null;
-
-  // Set reporter to share it with a child class
-  this.reporter = reporter;
-
-  // Check if data is there
-  if (state.optional && data === undefined) {
-    if (state['default'] !== null)
-      data = state['default']
-    else
-      return;
-  }
-
-  // Encode children first
-  var content = null;
-  var primitive = false;
-  if (state.any) {
-    // Anything that was given is translated to buffer
-    result = this._createEncoderBuffer(data);
-  } else if (state.choice) {
-    result = this._encodeChoice(data, reporter);
-  } else if (state.contains) {
-    content = this._getUse(state.contains, parent)._encode(data, reporter);
-    primitive = true;
-  } else if (state.children) {
-    content = state.children.map(function(child) {
-      if (child._baseState.tag === 'null_')
-        return child._encode(null, reporter, data);
-
-      if (child._baseState.key === null)
-        return reporter.error('Child should have a key');
-      var prevKey = reporter.enterKey(child._baseState.key);
-
-      if (typeof data !== 'object')
-        return reporter.error('Child expected, but input is not object');
-
-      var res = child._encode(data[child._baseState.key], reporter, data);
-      reporter.leaveKey(prevKey);
-
-      return res;
-    }, this).filter(function(child) {
-      return child;
-    });
-    content = this._createEncoderBuffer(content);
-  } else {
-    if (state.tag === 'seqof' || state.tag === 'setof') {
-      // TODO(indutny): this should be thrown on DSL level
-      if (!(state.args && state.args.length === 1))
-        return reporter.error('Too many args for : ' + state.tag);
-
-      if (!Array.isArray(data))
-        return reporter.error('seqof/setof, but data is not Array');
-
-      var child = this.clone();
-      child._baseState.implicit = null;
-      content = this._createEncoderBuffer(data.map(function(item) {
-        var state = this._baseState;
-
-        return this._getUse(state.args[0], data)._encode(item, reporter);
-      }, child));
-    } else if (state.use !== null) {
-      result = this._getUse(state.use, parent)._encode(data, reporter);
-    } else {
-      content = this._encodePrimitive(state.tag, data);
-      primitive = true;
-    }
-  }
-
-  // Encode data itself
-  var result;
-  if (!state.any && state.choice === null) {
-    var tag = state.implicit !== null ? state.implicit : state.tag;
-    var cls = state.implicit === null ? 'universal' : 'context';
-
-    if (tag === null) {
-      if (state.use === null)
-        reporter.error('Tag could be ommited only for .use()');
-    } else {
-      if (state.use === null)
-        result = this._encodeComposite(tag, primitive, cls, content);
-    }
-  }
-
-  // Wrap in explicit
-  if (state.explicit !== null)
-    result = this._encodeComposite(state.explicit, false, 'context', result);
-
-  return result;
-};
-
-Node.prototype._encodeChoice = function encodeChoice(data, reporter) {
-  var state = this._baseState;
-
-  var node = state.choice[data.type];
-  if (!node) {
-    assert(
-        false,
-        data.type + ' not found in ' +
-            JSON.stringify(Object.keys(state.choice)));
-  }
-  return node._encode(data.value, reporter);
-};
-
-Node.prototype._encodePrimitive = function encodePrimitive(tag, data) {
-  var state = this._baseState;
-
-  if (/str$/.test(tag))
-    return this._encodeStr(data, tag);
-  else if (tag === 'objid' && state.args)
-    return this._encodeObjid(data, state.reverseArgs[0], state.args[1]);
-  else if (tag === 'objid')
-    return this._encodeObjid(data, null, null);
-  else if (tag === 'gentime' || tag === 'utctime')
-    return this._encodeTime(data, tag);
-  else if (tag === 'null_')
-    return this._encodeNull();
-  else if (tag === 'int' || tag === 'enum')
-    return this._encodeInt(data, state.args && state.reverseArgs[0]);
-  else if (tag === 'bool')
-    return this._encodeBool(data);
-  else if (tag === 'objDesc')
-    return this._encodeStr(data, tag);
-  else
-    throw new Error('Unsupported tag: ' + tag);
-};
-
-Node.prototype._isNumstr = function isNumstr(str) {
-  return /^[0-9 ]*$/.test(str);
-};
-
-Node.prototype._isPrintstr = function isPrintstr(str) {
-  return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str);
-};
-
-},{"../base":4,"minimalistic-assert":99}],6:[function(require,module,exports){
-var inherits = require('inherits');
-
-function Reporter(options) {
-  this._reporterState = {
-    obj: null,
-    path: [],
-    options: options || {},
-    errors: []
-  };
-}
-exports.Reporter = Reporter;
-
-Reporter.prototype.isError = function isError(obj) {
-  return obj instanceof ReporterError;
-};
-
-Reporter.prototype.save = function save() {
-  var state = this._reporterState;
-
-  return { obj: state.obj, pathLen: state.path.length };
-};
-
-Reporter.prototype.restore = function restore(data) {
-  var state = this._reporterState;
-
-  state.obj = data.obj;
-  state.path = state.path.slice(0, data.pathLen);
-};
-
-Reporter.prototype.enterKey = function enterKey(key) {
-  return this._reporterState.path.push(key);
-};
-
-Reporter.prototype.exitKey = function exitKey(index) {
-  var state = this._reporterState;
-
-  state.path = state.path.slice(0, index - 1);
-};
-
-Reporter.prototype.leaveKey = function leaveKey(index, key, value) {
-  var state = this._reporterState;
-
-  this.exitKey(index);
-  if (state.obj !== null)
-    state.obj[key] = value;
-};
-
-Reporter.prototype.path = function path() {
-  return this._reporterState.path.join('/');
-};
-
-Reporter.prototype.enterObject = function enterObject() {
-  var state = this._reporterState;
-
-  var prev = state.obj;
-  state.obj = {};
-  return prev;
-};
-
-Reporter.prototype.leaveObject = function leaveObject(prev) {
-  var state = this._reporterState;
-
-  var now = state.obj;
-  state.obj = prev;
-  return now;
-};
-
-Reporter.prototype.error = function error(msg) {
-  var err;
-  var state = this._reporterState;
-
-  var inherited = msg instanceof ReporterError;
-  if (inherited) {
-    err = msg;
-  } else {
-    err = new ReporterError(state.path.map(function(elem) {
-      return '[' + JSON.stringify(elem) + ']';
-    }).join(''), msg.message || msg, msg.stack);
-  }
-
-  if (!state.options.partial)
-    throw err;
-
-  if (!inherited)
-    state.errors.push(err);
-
-  return err;
-};
-
-Reporter.prototype.wrapResult = function wrapResult(result) {
-  var state = this._reporterState;
-  if (!state.options.partial)
-    return result;
-
-  return {
-    result: this.isError(result) ? null : result,
-    errors: state.errors
-  };
-};
-
-function ReporterError(path, msg) {
-  this.path = path;
-  this.rethrow(msg);
-};
-inherits(ReporterError, Error);
-
-ReporterError.prototype.rethrow = function rethrow(msg) {
-  this.message = msg + ' at: ' + (this.path || '(shallow)');
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, ReporterError);
-
-  if (!this.stack) {
-    try {
-      // IE only adds stack when thrown
-      throw new Error(this.message);
-    } catch (e) {
-      this.stack = e.stack;
-    }
-  }
-  return this;
-};
-
-},{"inherits":95}],7:[function(require,module,exports){
-var constants = require('../constants');
-
-exports.tagClass = {
-  0: 'universal',
-  1: 'application',
-  2: 'context',
-  3: 'private'
-};
-exports.tagClassByName = constants._reverse(exports.tagClass);
-
-exports.tag = {
-  0x00: 'end',
-  0x01: 'bool',
-  0x02: 'int',
-  0x03: 'bitstr',
-  0x04: 'octstr',
-  0x05: 'null_',
-  0x06: 'objid',
-  0x07: 'objDesc',
-  0x08: 'external',
-  0x09: 'real',
-  0x0a: 'enum',
-  0x0b: 'embed',
-  0x0c: 'utf8str',
-  0x0d: 'relativeOid',
-  0x10: 'seq',
-  0x11: 'set',
-  0x12: 'numstr',
-  0x13: 'printstr',
-  0x14: 't61str',
-  0x15: 'videostr',
-  0x16: 'ia5str',
-  0x17: 'utctime',
-  0x18: 'gentime',
-  0x19: 'graphstr',
-  0x1a: 'iso646str',
-  0x1b: 'genstr',
-  0x1c: 'unistr',
-  0x1d: 'charstr',
-  0x1e: 'bmpstr'
-};
-exports.tagByName = constants._reverse(exports.tag);
-
-},{"../constants":8}],8:[function(require,module,exports){
-var constants = exports;
-
-// Helper
-constants._reverse = function reverse(map) {
-  var res = {};
-
-  Object.keys(map).forEach(function(key) {
-    // Convert key to integer if it is stringified
-    if ((key | 0) == key)
-      key = key | 0;
-
-    var value = map[key];
-    res[value] = key;
-  });
-
-  return res;
-};
-
-constants.der = require('./der');
-
-},{"./der":7}],9:[function(require,module,exports){
-var inherits = require('inherits');
-
-var asn1 = require('../../asn1');
-var base = asn1.base;
-var bignum = asn1.bignum;
-
-// Import DER constants
-var der = asn1.constants.der;
-
-function DERDecoder(entity) {
-  this.enc = 'der';
-  this.name = entity.name;
-  this.entity = entity;
-
-  // Construct base tree
-  this.tree = new DERNode();
-  this.tree._init(entity.body);
-};
-module.exports = DERDecoder;
-
-DERDecoder.prototype.decode = function decode(data, options) {
-  if (!(data instanceof base.DecoderBuffer))
-    data = new base.DecoderBuffer(data, options);
-
-  return this.tree._decode(data, options);
-};
-
-// Tree methods
-
-function DERNode(parent) {
-  base.Node.call(this, 'der', parent);
-}
-inherits(DERNode, base.Node);
-
-DERNode.prototype._peekTag = function peekTag(buffer, tag, any) {
-  if (buffer.isEmpty())
-    return false;
-
-  var state = buffer.save();
-  var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"');
-  if (buffer.isError(decodedTag))
-    return decodedTag;
-
-  buffer.restore(state);
-
-  return decodedTag.tag === tag || decodedTag.tagStr === tag ||
-    (decodedTag.tagStr + 'of') === tag || any;
-};
-
-DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) {
-  var decodedTag = derDecodeTag(buffer,
-                                'Failed to decode tag of "' + tag + '"');
-  if (buffer.isError(decodedTag))
-    return decodedTag;
-
-  var len = derDecodeLen(buffer,
-                         decodedTag.primitive,
-                         'Failed to get length of "' + tag + '"');
-
-  // Failure
-  if (buffer.isError(len))
-    return len;
-
-  if (!any &&
-      decodedTag.tag !== tag &&
-      decodedTag.tagStr !== tag &&
-      decodedTag.tagStr + 'of' !== tag) {
-    return buffer.error('Failed to match tag: "' + tag + '"');
-  }
-
-  if (decodedTag.primitive || len !== null)
-    return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
-
-  // Indefinite length... find END tag
-  var state = buffer.save();
-  var res = this._skipUntilEnd(
-      buffer,
-      'Failed to skip indefinite length body: "' + this.tag + '"');
-  if (buffer.isError(res))
-    return res;
-
-  len = buffer.offset - state.offset;
-  buffer.restore(state);
-  return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
-};
-
-DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) {
-  while (true) {
-    var tag = derDecodeTag(buffer, fail);
-    if (buffer.isError(tag))
-      return tag;
-    var len = derDecodeLen(buffer, tag.primitive, fail);
-    if (buffer.isError(len))
-      return len;
-
-    var res;
-    if (tag.primitive || len !== null)
-      res = buffer.skip(len)
-    else
-      res = this._skipUntilEnd(buffer, fail);
-
-    // Failure
-    if (buffer.isError(res))
-      return res;
-
-    if (tag.tagStr === 'end')
-      break;
-  }
-};
-
-DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder,
-                                                    options) {
-  var result = [];
-  while (!buffer.isEmpty()) {
-    var possibleEnd = this._peekTag(buffer, 'end');
-    if (buffer.isError(possibleEnd))
-      return possibleEnd;
-
-    var res = decoder.decode(buffer, 'der', options);
-    if (buffer.isError(res) && possibleEnd)
-      break;
-    result.push(res);
-  }
-  return result;
-};
-
-DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
-  if (tag === 'bitstr') {
-    var unused = buffer.readUInt8();
-    if (buffer.isError(unused))
-      return unused;
-    return { unused: unused, data: buffer.raw() };
-  } else if (tag === 'bmpstr') {
-    var raw = buffer.raw();
-    if (raw.length % 2 === 1)
-      return buffer.error('Decoding of string type: bmpstr length mismatch');
-
-    var str = '';
-    for (var i = 0; i < raw.length / 2; i++) {
-      str += String.fromCharCode(raw.readUInt16BE(i * 2));
-    }
-    return str;
-  } else if (tag === 'numstr') {
-    var numstr = buffer.raw().toString('ascii');
-    if (!this._isNumstr(numstr)) {
-      return buffer.error('Decoding of string type: ' +
-                          'numstr unsupported characters');
-    }
-    return numstr;
-  } else if (tag === 'octstr') {
-    return buffer.raw();
-  } else if (tag === 'objDesc') {
-    return buffer.raw();
-  } else if (tag === 'printstr') {
-    var printstr = buffer.raw().toString('ascii');
-    if (!this._isPrintstr(printstr)) {
-      return buffer.error('Decoding of string type: ' +
-                          'printstr unsupported characters');
-    }
-    return printstr;
-  } else if (/str$/.test(tag)) {
-    return buffer.raw().toString();
-  } else {
-    return buffer.error('Decoding of string type: ' + tag + ' unsupported');
-  }
-};
-
-DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
-  var result;
-  var identifiers = [];
-  var ident = 0;
-  while (!buffer.isEmpty()) {
-    var subident = buffer.readUInt8();
-    ident <<= 7;
-    ident |= subident & 0x7f;
-    if ((subident & 0x80) === 0) {
-      identifiers.push(ident);
-      ident = 0;
-    }
-  }
-  if (subident & 0x80)
-    identifiers.push(ident);
-
-  var first = (identifiers[0] / 40) | 0;
-  var second = identifiers[0] % 40;
-
-  if (relative)
-    result = identifiers;
-  else
-    result = [first, second].concat(identifiers.slice(1));
-
-  if (values) {
-    var tmp = values[result.join(' ')];
-    if (tmp === undefined)
-      tmp = values[result.join('.')];
-    if (tmp !== undefined)
-      result = tmp;
-  }
-
-  return result;
-};
-
-DERNode.prototype._decodeTime = function decodeTime(buffer, tag) {
-  var str = buffer.raw().toString();
-  if (tag === 'gentime') {
-    var year = str.slice(0, 4) | 0;
-    var mon = str.slice(4, 6) | 0;
-    var day = str.slice(6, 8) | 0;
-    var hour = str.slice(8, 10) | 0;
-    var min = str.slice(10, 12) | 0;
-    var sec = str.slice(12, 14) | 0;
-  } else if (tag === 'utctime') {
-    var year = str.slice(0, 2) | 0;
-    var mon = str.slice(2, 4) | 0;
-    var day = str.slice(4, 6) | 0;
-    var hour = str.slice(6, 8) | 0;
-    var min = str.slice(8, 10) | 0;
-    var sec = str.slice(10, 12) | 0;
-    if (year < 70)
-      year = 2000 + year;
-    else
-      year = 1900 + year;
-  } else {
-    return buffer.error('Decoding ' + tag + ' time is not supported yet');
-  }
-
-  return Date.UTC(year, mon - 1, day, hour, min, sec, 0);
-};
-
-DERNode.prototype._decodeNull = function decodeNull(buffer) {
-  return null;
-};
-
-DERNode.prototype._decodeBool = function decodeBool(buffer) {
-  var res = buffer.readUInt8();
-  if (buffer.isError(res))
-    return res;
-  else
-    return res !== 0;
-};
-
-DERNode.prototype._decodeInt = function decodeInt(buffer, values) {
-  // Bigint, return as it is (assume big endian)
-  var raw = buffer.raw();
-  var res = new bignum(raw);
-
-  if (values)
-    res = values[res.toString(10)] || res;
-
-  return res;
-};
-
-DERNode.prototype._use = function use(entity, obj) {
-  if (typeof entity === 'function')
-    entity = entity(obj);
-  return entity._getDecoder('der').tree;
-};
-
-// Utility methods
-
-function derDecodeTag(buf, fail) {
-  var tag = buf.readUInt8(fail);
-  if (buf.isError(tag))
-    return tag;
-
-  var cls = der.tagClass[tag >> 6];
-  var primitive = (tag & 0x20) === 0;
-
-  // Multi-octet tag - load
-  if ((tag & 0x1f) === 0x1f) {
-    var oct = tag;
-    tag = 0;
-    while ((oct & 0x80) === 0x80) {
-      oct = buf.readUInt8(fail);
-      if (buf.isError(oct))
-        return oct;
-
-      tag <<= 7;
-      tag |= oct & 0x7f;
-    }
-  } else {
-    tag &= 0x1f;
-  }
-  var tagStr = der.tag[tag];
-
-  return {
-    cls: cls,
-    primitive: primitive,
-    tag: tag,
-    tagStr: tagStr
-  };
-}
-
-function derDecodeLen(buf, primitive, fail) {
-  var len = buf.readUInt8(fail);
-  if (buf.isError(len))
-    return len;
-
-  // Indefinite form
-  if (!primitive && len === 0x80)
-    return null;
-
-  // Definite form
-  if ((len & 0x80) === 0) {
-    // Short form
-    return len;
-  }
-
-  // Long form
-  var num = len & 0x7f;
-  if (num > 4)
-    return buf.error('length octect is too long');
-
-  len = 0;
-  for (var i = 0; i < num; i++) {
-    len <<= 8;
-    var j = buf.readUInt8(fail);
-    if (buf.isError(j))
-      return j;
-    len |= j;
-  }
-
-  return len;
-}
-
-},{"../../asn1":1,"inherits":95}],10:[function(require,module,exports){
-var decoders = exports;
-
-decoders.der = require('./der');
-decoders.pem = require('./pem');
-
-},{"./der":9,"./pem":11}],11:[function(require,module,exports){
-var inherits = require('inherits');
-var Buffer = require('buffer').Buffer;
-
-var DERDecoder = require('./der');
-
-function PEMDecoder(entity) {
-  DERDecoder.call(this, entity);
-  this.enc = 'pem';
-};
-inherits(PEMDecoder, DERDecoder);
-module.exports = PEMDecoder;
-
-PEMDecoder.prototype.decode = function decode(data, options) {
-  var lines = data.toString().split(/[\r\n]+/g);
-
-  var label = options.label.toUpperCase();
-
-  var re = /^-----(BEGIN|END) ([^-]+)-----$/;
-  var start = -1;
-  var end = -1;
-  for (var i = 0; i < lines.length; i++) {
-    var match = lines[i].match(re);
-    if (match === null)
-      continue;
-
-    if (match[2] !== label)
-      continue;
-
-    if (start === -1) {
-      if (match[1] !== 'BEGIN')
-        break;
-      start = i;
-    } else {
-      if (match[1] !== 'END')
-        break;
-      end = i;
-      break;
-    }
-  }
-  if (start === -1 || end === -1)
-    throw new Error('PEM section not found for: ' + label);
-
-  var base64 = lines.slice(start + 1, end).join('');
-  // Remove excessive symbols
-  base64.replace(/[^a-z0-9\+\/=]+/gi, '');
-
-  var input = new Buffer(base64, 'base64');
-  return DERDecoder.prototype.decode.call(this, input, options);
-};
-
-},{"./der":9,"buffer":47,"inherits":95}],12:[function(require,module,exports){
-var inherits = require('inherits');
-var Buffer = require('buffer').Buffer;
-
-var asn1 = require('../../asn1');
-var base = asn1.base;
-
-// Import DER constants
-var der = asn1.constants.der;
-
-function DEREncoder(entity) {
-  this.enc = 'der';
-  this.name = entity.name;
-  this.entity = entity;
-
-  // Construct base tree
-  this.tree = new DERNode();
-  this.tree._init(entity.body);
-};
-module.exports = DEREncoder;
-
-DEREncoder.prototype.encode = function encode(data, reporter) {
-  return this.tree._encode(data, reporter).join();
-};
-
-// Tree methods
-
-function DERNode(parent) {
-  base.Node.call(this, 'der', parent);
-}
-inherits(DERNode, base.Node);
-
-DERNode.prototype._encodeComposite = function encodeComposite(tag,
-                                                              primitive,
-                                                              cls,
-                                                              content) {
-  var encodedTag = encodeTag(tag, primitive, cls, this.reporter);
-
-  // Short form
-  if (content.length < 0x80) {
-    var header = new Buffer(2);
-    header[0] = encodedTag;
-    header[1] = content.length;
-    return this._createEncoderBuffer([ header, content ]);
-  }
-
-  // Long form
-  // Count octets required to store length
-  var lenOctets = 1;
-  for (var i = content.length; i >= 0x100; i >>= 8)
-    lenOctets++;
-
-  var header = new Buffer(1 + 1 + lenOctets);
-  header[0] = encodedTag;
-  header[1] = 0x80 | lenOctets;
-
-  for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8)
-    header[i] = j & 0xff;
-
-  return this._createEncoderBuffer([ header, content ]);
-};
-
-DERNode.prototype._encodeStr = function encodeStr(str, tag) {
-  if (tag === 'bitstr') {
-    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
-  } else if (tag === 'bmpstr') {
-    var buf = new Buffer(str.length * 2);
-    for (var i = 0; i < str.length; i++) {
-      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
-    }
-    return this._createEncoderBuffer(buf);
-  } else if (tag === 'numstr') {
-    if (!this._isNumstr(str)) {
-      return this.reporter.error('Encoding of string type: numstr supports ' +
-                                 'only digits and space');
-    }
-    return this._createEncoderBuffer(str);
-  } else if (tag === 'printstr') {
-    if (!this._isPrintstr(str)) {
-      return this.reporter.error('Encoding of string type: printstr supports ' +
-                                 'only latin upper and lower case letters, ' +
-                                 'digits, space, apostrophe, left and rigth ' +
-                                 'parenthesis, plus sign, comma, hyphen, ' +
-                                 'dot, slash, colon, equal sign, ' +
-                                 'question mark');
-    }
-    return this._createEncoderBuffer(str);
-  } else if (/str$/.test(tag)) {
-    return this._createEncoderBuffer(str);
-  } else if (tag === 'objDesc') {
-    return this._createEncoderBuffer(str);
-  } else {
-    return this.reporter.error('Encoding of string type: ' + tag +
-                               ' unsupported');
-  }
-};
-
-DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
-  if (typeof id === 'string') {
-    if (!values)
-      return this.reporter.error('string objid given, but no values map found');
-    if (!values.hasOwnProperty(id))
-      return this.reporter.error('objid not found in values map');
-    id = values[id].split(/[\s\.]+/g);
-    for (var i = 0; i < id.length; i++)
-      id[i] |= 0;
-  } else if (Array.isArray(id)) {
-    id = id.slice();
-    for (var i = 0; i < id.length; i++)
-      id[i] |= 0;
-  }
-
-  if (!Array.isArray(id)) {
-    return this.reporter.error('objid() should be either array or string, ' +
-                               'got: ' + JSON.stringify(id));
-  }
-
-  if (!relative) {
-    if (id[1] >= 40)
-      return this.reporter.error('Second objid identifier OOB');
-    id.splice(0, 2, id[0] * 40 + id[1]);
-  }
-
-  // Count number of octets
-  var size = 0;
-  for (var i = 0; i < id.length; i++) {
-    var ident = id[i];
-    for (size++; ident >= 0x80; ident >>= 7)
-      size++;
-  }
-
-  var objid = new Buffer(size);
-  var offset = objid.length - 1;
-  for (var i = id.length - 1; i >= 0; i--) {
-    var ident = id[i];
-    objid[offset--] = ident & 0x7f;
-    while ((ident >>= 7) > 0)
-      objid[offset--] = 0x80 | (ident & 0x7f);
-  }
-
-  return this._createEncoderBuffer(objid);
-};
-
-function two(num) {
-  if (num < 10)
-    return '0' + num;
-  else
-    return num;
-}
-
-DERNode.prototype._encodeTime = function encodeTime(time, tag) {
-  var str;
-  var date = new Date(time);
-
-  if (tag === 'gentime') {
-    str = [
-      two(date.getFullYear()),
-      two(date.getUTCMonth() + 1),
-      two(date.getUTCDate()),
-      two(date.getUTCHours()),
-      two(date.getUTCMinutes()),
-      two(date.getUTCSeconds()),
-      'Z'
-    ].join('');
-  } else if (tag === 'utctime') {
-    str = [
-      two(date.getFullYear() % 100),
-      two(date.getUTCMonth() + 1),
-      two(date.getUTCDate()),
-      two(date.getUTCHours()),
-      two(date.getUTCMinutes()),
-      two(date.getUTCSeconds()),
-      'Z'
-    ].join('');
-  } else {
-    this.reporter.error('Encoding ' + tag + ' time is not supported yet');
-  }
-
-  return this._encodeStr(str, 'octstr');
-};
-
-DERNode.prototype._encodeNull = function encodeNull() {
-  return this._createEncoderBuffer('');
-};
-
-DERNode.prototype._encodeInt = function encodeInt(num, values) {
-  if (typeof num === 'string') {
-    if (!values)
-      return this.reporter.error('String int or enum given, but no values map');
-    if (!values.hasOwnProperty(num)) {
-      return this.reporter.error('Values map doesn\'t contain: ' +
-                                 JSON.stringify(num));
-    }
-    num = values[num];
-  }
-
-  // Bignum, assume big endian
-  if (typeof num !== 'number' && !Buffer.isBuffer(num)) {
-    var numArray = num.toArray();
-    if (!num.sign && numArray[0] & 0x80) {
-      numArray.unshift(0);
-    }
-    num = new Buffer(numArray);
-  }
-
-  if (Buffer.isBuffer(num)) {
-    var size = num.length;
-    if (num.length === 0)
-      size++;
-
-    var out = new Buffer(size);
-    num.copy(out);
-    if (num.length === 0)
-      out[0] = 0
-    return this._createEncoderBuffer(out);
-  }
-
-  if (num < 0x80)
-    return this._createEncoderBuffer(num);
-
-  if (num < 0x100)
-    return this._createEncoderBuffer([0, num]);
-
-  var size = 1;
-  for (var i = num; i >= 0x100; i >>= 8)
-    size++;
-
-  var out = new Array(size);
-  for (var i = out.length - 1; i >= 0; i--) {
-    out[i] = num & 0xff;
-    num >>= 8;
-  }
-  if(out[0] & 0x80) {
-    out.unshift(0);
-  }
-
-  return this._createEncoderBuffer(new Buffer(out));
-};
-
-DERNode.prototype._encodeBool = function encodeBool(value) {
-  return this._createEncoderBuffer(value ? 0xff : 0);
-};
-
-DERNode.prototype._use = function use(entity, obj) {
-  if (typeof entity === 'function')
-    entity = entity(obj);
-  return entity._getEncoder('der').tree;
-};
-
-DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) {
-  var state = this._baseState;
-  var i;
-  if (state['default'] === null)
-    return false;
-
-  var data = dataBuffer.join();
-  if (state.defaultBuffer === undefined)
-    state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join();
-
-  if (data.length !== state.defaultBuffer.length)
-    return false;
-
-  for (i=0; i < data.length; i++)
-    if (data[i] !== state.defaultBuffer[i])
-      return false;
-
-  return true;
-};
-
-// Utility methods
-
-function encodeTag(tag, primitive, cls, reporter) {
-  var res;
-
-  if (tag === 'seqof')
-    tag = 'seq';
-  else if (tag === 'setof')
-    tag = 'set';
-
-  if (der.tagByName.hasOwnProperty(tag))
-    res = der.tagByName[tag];
-  else if (typeof tag === 'number' && (tag | 0) === tag)
-    res = tag;
-  else
-    return reporter.error('Unknown tag: ' + tag);
-
-  if (res >= 0x1f)
-    return reporter.error('Multi-octet tag encoding unsupported');
-
-  if (!primitive)
-    res |= 0x20;
-
-  res |= (der.tagClassByName[cls || 'universal'] << 6);
-
-  return res;
-}
-
-},{"../../asn1":1,"buffer":47,"inherits":95}],13:[function(require,module,exports){
-var encoders = exports;
-
-encoders.der = require('./der');
-encoders.pem = require('./pem');
-
-},{"./der":12,"./pem":14}],14:[function(require,module,exports){
-var inherits = require('inherits');
-
-var DEREncoder = require('./der');
-
-function PEMEncoder(entity) {
-  DEREncoder.call(this, entity);
-  this.enc = 'pem';
-};
-inherits(PEMEncoder, DEREncoder);
-module.exports = PEMEncoder;
-
-PEMEncoder.prototype.encode = function encode(data, options) {
-  var buf = DEREncoder.prototype.encode.call(this, data);
-
-  var p = buf.toString('base64');
-  var out = [ '-----BEGIN ' + options.label + '-----' ];
-  for (var i = 0; i < p.length; i += 64)
-    out.push(p.slice(i, i + 64));
-  out.push('-----END ' + options.label + '-----');
-  return out.join('\n');
-};
-
-},{"./der":12,"inherits":95}],15:[function(require,module,exports){
-(function (global){
-'use strict';
-
-// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
-// original notice:
-
-/*!
- * The buffer module from node.js, for the browser.
- *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
- * @license  MIT
- */
-function compare(a, b) {
-  if (a === b) {
-    return 0;
-  }
-
-  var x = a.length;
-  var y = b.length;
-
-  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
-    if (a[i] !== b[i]) {
-      x = a[i];
-      y = b[i];
-      break;
-    }
-  }
-
-  if (x < y) {
-    return -1;
-  }
-  if (y < x) {
-    return 1;
-  }
-  return 0;
-}
-function isBuffer(b) {
-  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
-    return global.Buffer.isBuffer(b);
-  }
-  return !!(b != null && b._isBuffer);
-}
-
-// based on node assert, original notice:
-
-// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
-//
-// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
-//
-// Originally from narwhal.js (http://narwhaljs.org)
-// Copyright (c) 2009 Thomas Robinson <280north.com>
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the 'Software'), to
-// deal in the Software without restriction, including without limitation the
-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-// sell copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-var util = require('util/');
-var hasOwn = Object.prototype.hasOwnProperty;
-var pSlice = Array.prototype.slice;
-var functionsHaveNames = (function () {
-  return function foo() {}.name === 'foo';
-}());
-function pToString (obj) {
-  return Object.prototype.toString.call(obj);
-}
-function isView(arrbuf) {
-  if (isBuffer(arrbuf)) {
-    return false;
-  }
-  if (typeof global.ArrayBuffer !== 'function') {
-    return false;
-  }
-  if (typeof ArrayBuffer.isView === 'function') {
-    return ArrayBuffer.isView(arrbuf);
-  }
-  if (!arrbuf) {
-    return false;
-  }
-  if (arrbuf instanceof DataView) {
-    return true;
-  }
-  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
-    return true;
-  }
-  return false;
-}
-// 1. The assert module provides functions that throw
-// AssertionError's when particular conditions are not met. The
-// assert module must conform to the following interface.
-
-var assert = module.exports = ok;
-
-// 2. The AssertionError is defined in assert.
-// new assert.AssertionError({ message: message,
-//                             actual: actual,
-//                             expected: expected })
-
-var regex = /\s*function\s+([^\(\s]*)\s*/;
-// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
-function getName(func) {
-  if (!util.isFunction(func)) {
-    return;
-  }
-  if (functionsHaveNames) {
-    return func.name;
-  }
-  var str = func.toString();
-  var match = str.match(regex);
-  return match && match[1];
-}
-assert.AssertionError = function AssertionError(options) {
-  this.name = 'AssertionError';
-  this.actual = options.actual;
-  this.expected = options.expected;
-  this.operator = options.operator;
-  if (options.message) {
-    this.message = options.message;
-    this.generatedMessage = false;
-  } else {
-    this.message = getMessage(this);
-    this.generatedMessage = true;
-  }
-  var stackStartFunction = options.stackStartFunction || fail;
-  if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, stackStartFunction);
-  } else {
-    // non v8 browsers so we can have a stacktrace
-    var err = new Error();
-    if (err.stack) {
-      var out = err.stack;
-
-      // try to strip useless frames
-      var fn_name = getName(stackStartFunction);
-      var idx = out.indexOf('\n' + fn_name);
-      if (idx >= 0) {
-        // once we have located the function frame
-        // we need to strip out everything before it (and its line)
-        var next_line = out.indexOf('\n', idx + 1);
-        out = out.substring(next_line + 1);
-      }
-
-      this.stack = out;
-    }
-  }
-};
-
-// assert.AssertionError instanceof Error
-util.inherits(assert.AssertionError, Error);
-
-function truncate(s, n) {
-  if (typeof s === 'string') {
-    return s.length < n ? s : s.slice(0, n);
-  } else {
-    return s;
-  }
-}
-function inspect(something) {
-  if (functionsHaveNames || !util.isFunction(something)) {
-    return util.inspect(something);
-  }
-  var rawname = getName(something);
-  var name = rawname ? ': ' + rawname : '';
-  return '[Function' +  name + ']';
-}
-function getMessage(self) {
-  return truncate(inspect(self.actual), 128) + ' ' +
-         self.operator + ' ' +
-         truncate(inspect(self.expected), 128);
-}
-
-// At present only the three keys mentioned above are used and
-// understood by the spec. Implementations or sub modules can pass
-// other keys to the AssertionError's constructor - they will be
-// ignored.
-
-// 3. All of the following functions must throw an AssertionError
-// when a corresponding condition is not met, with a message that
-// may be undefined if not provided.  All assertion methods provide
-// both the actual and expected values to the assertion error for
-// display purposes.
-
-function fail(actual, expected, message, operator, stackStartFunction) {
-  throw new assert.AssertionError({
-    message: message,
-    actual: actual,
-    expected: expected,
-    operator: operator,
-    stackStartFunction: stackStartFunction
-  });
-}
-
-// EXTENSION! allows for well behaved errors defined elsewhere.
-assert.fail = fail;
-
-// 4. Pure assertion tests whether a value is truthy, as determined
-// by !!guard.
-// assert.ok(guard, message_opt);
-// This statement is equivalent to assert.equal(true, !!guard,
-// message_opt);. To test strictly for the value true, use
-// assert.strictEqual(true, guard, message_opt);.
-
-function ok(value, message) {
-  if (!value) fail(value, true, message, '==', assert.ok);
-}
-assert.ok = ok;
-
-// 5. The equality assertion tests shallow, coercive equality with
-// ==.
-// assert.equal(actual, expected, message_opt);
-
-assert.equal = function equal(actual, expected, message) {
-  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
-};
-
-// 6. The non-equality assertion tests for whether two objects are not equal
-// with != assert.notEqual(actual, expected, message_opt);
-
-assert.notEqual = function notEqual(actual, expected, message) {
-  if (actual == expected) {
-    fail(actual, expected, message, '!=', assert.notEqual);
-  }
-};
-
-// 7. The equivalence assertion tests a deep equality relation.
-// assert.deepEqual(actual, expected, message_opt);
-
-assert.deepEqual = function deepEqual(actual, expected, message) {
-  if (!_deepEqual(actual, expected, false)) {
-    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
-  }
-};
-
-assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
-  if (!_deepEqual(actual, expected, true)) {
-    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
-  }
-};
-
-function _deepEqual(actual, expected, strict, memos) {
-  // 7.1. All identical values are equivalent, as determined by ===.
-  if (actual === expected) {
-    return true;
-  } else if (isBuffer(actual) && isBuffer(expected)) {
-    return compare(actual, expected) === 0;
-
-  // 7.2. If the expected value is a Date object, the actual value is
-  // equivalent if it is also a Date object that refers to the same time.
-  } else if (util.isDate(actual) && util.isDate(expected)) {
-    return actual.getTime() === expected.getTime();
-
-  // 7.3 If the expected value is a RegExp object, the actual value is
-  // equivalent if it is also a RegExp object with the same source and
-  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
-  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
-    return actual.source === expected.source &&
-           actual.global === expected.global &&
-           actual.multiline === expected.multiline &&
-           actual.lastIndex === expected.lastIndex &&
-           actual.ignoreCase === expected.ignoreCase;
-
-  // 7.4. Other pairs that do not both pass typeof value == 'object',
-  // equivalence is determined by ==.
-  } else if ((actual === null || typeof actual !== 'object') &&
-             (expected === null || typeof expected !== 'object')) {
-    return strict ? actual === expected : actual == expected;
-
-  // If both values are instances of typed arrays, wrap their underlying
-  // ArrayBuffers in a Buffer each to increase performance
-  // This optimization requires the arrays to have the same type as checked by
-  // Object.prototype.toString (aka pToString). Never perform binary
-  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
-  // bit patterns are not identical.
-  } else if (isView(actual) && isView(expected) &&
-             pToString(actual) === pToString(expected) &&
-             !(actual instanceof Float32Array ||
-               actual instanceof Float64Array)) {
-    return compare(new Uint8Array(actual.buffer),
-                   new Uint8Array(expected.buffer)) === 0;
-
-  // 7.5 For all other Object pairs, including Array objects, equivalence is
-  // determined by having the same number of owned properties (as verified
-  // with Object.prototype.hasOwnProperty.call), the same set of keys
-  // (although not necessarily the same order), equivalent values for every
-  // corresponding key, and an identical 'prototype' property. Note: this
-  // accounts for both named and indexed properties on Arrays.
-  } else if (isBuffer(actual) !== isBuffer(expected)) {
-    return false;
-  } else {
-    memos = memos || {actual: [], expected: []};
-
-    var actualIndex = memos.actual.indexOf(actual);
-    if (actualIndex !== -1) {
-      if (actualIndex === memos.expected.indexOf(expected)) {
-        return true;
-      }
-    }
-
-    memos.actual.push(actual);
-    memos.expected.push(expected);
-
-    return objEquiv(actual, expected, strict, memos);
-  }
-}
-
-function isArguments(object) {
-  return Object.prototype.toString.call(object) == '[object Arguments]';
-}
-
-function objEquiv(a, b, strict, actualVisitedObjects) {
-  if (a === null || a === undefined || b === null || b === undefined)
-    return false;
-  // if one is a primitive, the other must be same
-  if (util.isPrimitive(a) || util.isPrimitive(b))
-    return a === b;
-  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
-    return false;
-  var aIsArgs = isArguments(a);
-  var bIsArgs = isArguments(b);
-  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
-    return false;
-  if (aIsArgs) {
-    a = pSlice.call(a);
-    b = pSlice.call(b);
-    return _deepEqual(a, b, strict);
-  }
-  var ka = objectKeys(a);
-  var kb = objectKeys(b);
-  var key, i;
-  // having the same number of owned properties (keys incorporates
-  // hasOwnProperty)
-  if (ka.length !== kb.length)
-    return false;
-  //the same set of keys (although not necessarily the same order),
-  ka.sort();
-  kb.sort();
-  //~~~cheap key test
-  for (i = ka.length - 1; i >= 0; i--) {
-    if (ka[i] !== kb[i])
-      return false;
-  }
-  //equivalent values for every corresponding key, and
-  //~~~possibly expensive deep test
-  for (i = ka.length - 1; i >= 0; i--) {
-    key = ka[i];
-    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
-      return false;
-  }
-  return true;
-}
-
-// 8. The non-equivalence assertion tests for any deep inequality.
-// assert.notDeepEqual(actual, expected, message_opt);
-
-assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
-  if (_deepEqual(actual, expected, false)) {
-    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
-  }
-};
-
-assert.notDeepStrictEqual = notDeepStrictEqual;
-function notDeepStrictEqual(actual, expected, message) {
-  if (_deepEqual(actual, expected, true)) {
-    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
-  }
-}
-
-
-// 9. The strict equality assertion tests strict equality, as determined by ===.
-// assert.strictEqual(actual, expected, message_opt);
-
-assert.strictEqual = function strictEqual(actual, expected, message) {
-  if (actual !== expected) {
-    fail(actual, expected, message, '===', assert.strictEqual);
-  }
-};
-
-// 10. The strict non-equality assertion tests for strict inequality, as
-// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
-
-assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
-  if (actual === expected) {
-    fail(actual, expected, message, '!==', assert.notStrictEqual);
-  }
-};
-
-function expectedException(actual, expected) {
-  if (!actual || !expected) {
-    return false;
-  }
-
-  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
-    return expected.test(actual);
-  }
-
-  try {
-    if (actual instanceof expected) {
-      return true;
-    }
-  } catch (e) {
-    // Ignore.  The instanceof check doesn't work for arrow functions.
-  }
-
-  if (Error.isPrototypeOf(expected)) {
-    return false;
-  }
-
-  return expected.call({}, actual) === true;
-}
-
-function _tryBlock(block) {
-  var error;
-  try {
-    block();
-  } catch (e) {
-    error = e;
-  }
-  return error;
-}
-
-function _throws(shouldThrow, block, expected, message) {
-  var actual;
-
-  if (typeof block !== 'function') {
-    throw new TypeError('"block" argument must be a function');
-  }
-
-  if (typeof expected === 'string') {
-    message = expected;
-    expected = null;
-  }
-
-  actual = _tryBlock(block);
-
-  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
-            (message ? ' ' + message : '.');
-
-  if (shouldThrow && !actual) {
-    fail(actual, expected, 'Missing expected exception' + message);
-  }
-
-  var userProvidedMessage = typeof message === 'string';
-  var isUnwantedException = !shouldThrow && util.isError(actual);
-  var isUnexpectedException = !shouldThrow && actual && !expected;
-
-  if ((isUnwantedException &&
-      userProvidedMessage &&
-      expectedException(actual, expected)) ||
-      isUnexpectedException) {
-    fail(actual, expected, 'Got unwanted exception' + message);
-  }
-
-  if ((shouldThrow && actual && expected &&
-      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
-    throw actual;
-  }
-}
-
-// 11. Expected to throw an error:
-// assert.throws(block, Error_opt, message_opt);
-
-assert.throws = function(block, /*optional*/error, /*optional*/message) {
-  _throws(true, block, error, message);
-};
-
-// EXTENSION! This is annoying to write outside this module.
-assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
-  _throws(false, block, error, message);
-};
-
-assert.ifError = function(err) { if (err) throw err; };
-
-var objectKeys = Object.keys || function (obj) {
-  var keys = [];
-  for (var key in obj) {
-    if (hasOwn.call(obj, key)) keys.push(key);
-  }
-  return keys;
-};
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"util/":148}],16:[function(require,module,exports){
-'use strict'
-
-exports.byteLength = byteLength
-exports.toByteArray = toByteArray
-exports.fromByteArray = fromByteArray
-
-var lookup = []
-var revLookup = []
-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
-
-var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
-for (var i = 0, len = code.length; i < len; ++i) {
-  lookup[i] = code[i]
-  revLookup[code.charCodeAt(i)] = i
-}
-
-revLookup['-'.charCodeAt(0)] = 62
-revLookup['_'.charCodeAt(0)] = 63
-
-function placeHoldersCount (b64) {
-  var len = b64.length
-  if (len % 4 > 0) {
-    throw new Error('Invalid string. Length must be a multiple of 4')
-  }
-
-  // the number of equal signs (place holders)
-  // if there are two placeholders, than the two characters before it
-  // represent one byte
-  // if there is only one, then the three characters before it represent 2 bytes
-  // this is just a cheap hack to not do indexOf twice
-  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
-}
-
-function byteLength (b64) {
-  // base64 is 4/3 + up to two characters of the original data
-  return b64.length * 3 / 4 - placeHoldersCount(b64)
-}
-
-function toByteArray (b64) {
-  var i, j, l, tmp, placeHolders, arr
-  var len = b64.length
-  placeHolders = placeHoldersCount(b64)
-
-  arr = new Arr(len * 3 / 4 - placeHolders)
-
-  // if there are placeholders, only get up to the last complete 4 chars
-  l = placeHolders > 0 ? len - 4 : len
-
-  var L = 0
-
-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
-    arr[L++] = (tmp >> 16) & 0xFF
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
-  }
-
-  if (placeHolders === 2) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
-    arr[L++] = tmp & 0xFF
-  } else if (placeHolders === 1) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
-  }
-
-  return arr
-}
-
-function tripletToBase64 (num) {
-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
-}
-
-function encodeChunk (uint8, start, end) {
-  var tmp
-  var output = []
-  for (var i = start; i < end; i += 3) {
-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
-    output.push(tripletToBase64(tmp))
-  }
-  return output.join('')
-}
-
-function fromByteArray (uint8) {
-  var tmp
-  var len = uint8.length
-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
-  var output = ''
-  var parts = []
-  var maxChunkLength = 16383 // must be multiple of 3
-
-  // go through the array every three bytes, we'll deal with trailing stuff later
-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
-  }
-
-  // pad the end with zeros, but make sure to not forget the extra bytes
-  if (extraBytes === 1) {
-    tmp = uint8[len - 1]
-    output += lookup[tmp >> 2]
-    output += lookup[(tmp << 4) & 0x3F]
-    output += '=='
-  } else if (extraBytes === 2) {
-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
-    output += lookup[tmp >> 10]
-    output += lookup[(tmp >> 4) & 0x3F]
-    output += lookup[(tmp << 2) & 0x3F]
-    output += '='
-  }
-
-  parts.push(output)
-
-  return parts.join('')
-}
-
-},{}],17:[function(require,module,exports){
-(function (module, exports) {
-  'use strict';
-
-  // Utils
-  function assert (val, msg) {
-    if (!val) throw new Error(msg || 'Assertion failed');
-  }
-
-  // Could use `inherits` module, but don't want to move from single file
-  // architecture yet.
-  function inherits (ctor, superCtor) {
-    ctor.super_ = superCtor;
-    var TempCtor = function () {};
-    TempCtor.prototype = superCtor.prototype;
-    ctor.prototype = new TempCtor();
-    ctor.prototype.constructor = ctor;
-  }
-
-  // BN
-
-  function BN (number, base, endian) {
-    if (BN.isBN(number)) {
-      return number;
-    }
-
-    this.negative = 0;
-    this.words = null;
-    this.length = 0;
-
-    // Reduction context
-    this.red = null;
-
-    if (number !== null) {
-      if (base === 'le' || base === 'be') {
-        endian = base;
-        base = 10;
-      }
-
-      this._init(number || 0, base || 10, endian || 'be');
-    }
-  }
-  if (typeof module === 'object') {
-    module.exports = BN;
-  } else {
-    exports.BN = BN;
-  }
-
-  BN.BN = BN;
-  BN.wordSize = 26;
-
-  var Buffer;
-  try {
-    Buffer = require('buf' + 'fer').Buffer;
-  } catch (e) {
-  }
-
-  BN.isBN = function isBN (num) {
-    if (num instanceof BN) {
-      return true;
-    }
-
-    return num !== null && typeof num === 'object' &&
-      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
-  };
-
-  BN.max = function max (left, right) {
-    if (left.cmp(right) > 0) return left;
-    return right;
-  };
-
-  BN.min = function min (left, right) {
-    if (left.cmp(right) < 0) return left;
-    return right;
-  };
-
-  BN.prototype._init = function init (number, base, endian) {
-    if (typeof number === 'number') {
-      return this._initNumber(number, base, endian);
-    }
-
-    if (typeof number === 'object') {
-      return this._initArray(number, base, endian);
-    }
-
-    if (base === 'hex') {
-      base = 16;
-    }
-    assert(base === (base | 0) && base >= 2 && base <= 36);
-
-    number = number.toString().replace(/\s+/g, '');
-    var start = 0;
-    if (number[0] === '-') {
-      start++;
-    }
-
-    if (base === 16) {
-      this._parseHex(number, start);
-    } else {
-      this._parseBase(number, base, start);
-    }
-
-    if (number[0] === '-') {
-      this.negative = 1;
-    }
-
-    this.strip();
-
-    if (endian !== 'le') return;
-
-    this._initArray(this.toArray(), base, endian);
-  };
-
-  BN.prototype._initNumber = function _initNumber (number, base, endian) {
-    if (number < 0) {
-      this.negative = 1;
-      number = -number;
-    }
-    if (number < 0x4000000) {
-      this.words = [ number & 0x3ffffff ];
-      this.length = 1;
-    } else if (number < 0x10000000000000) {
-      this.words = [
-        number & 0x3ffffff,
-        (number / 0x4000000) & 0x3ffffff
-      ];
-      this.length = 2;
-    } else {
-      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
-      this.words = [
-        number & 0x3ffffff,
-        (number / 0x4000000) & 0x3ffffff,
-        1
-      ];
-      this.length = 3;
-    }
-
-    if (endian !== 'le') return;
-
-    // Reverse the bytes
-    this._initArray(this.toArray(), base, endian);
-  };
-
-  BN.prototype._initArray = function _initArray (number, base, endian) {
-    // Perhaps a Uint8Array
-    assert(typeof number.length === 'number');
-    if (number.length <= 0) {
-      this.words = [ 0 ];
-      this.length = 1;
-      return this;
-    }
-
-    this.length = Math.ceil(number.length / 3);
-    this.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      this.words[i] = 0;
-    }
-
-    var j, w;
-    var off = 0;
-    if (endian === 'be') {
-      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
-        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
-        this.words[j] |= (w << off) & 0x3ffffff;
-        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
-        off += 24;
-        if (off >= 26) {
-          off -= 26;
-          j++;
-        }
-      }
-    } else if (endian === 'le') {
-      for (i = 0, j = 0; i < number.length; i += 3) {
-        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
-        this.words[j] |= (w << off) & 0x3ffffff;
-        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
-        off += 24;
-        if (off >= 26) {
-          off -= 26;
-          j++;
-        }
-      }
-    }
-    return this.strip();
-  };
-
-  function parseHex (str, start, end) {
-    var r = 0;
-    var len = Math.min(str.length, end);
-    for (var i = start; i < len; i++) {
-      var c = str.charCodeAt(i) - 48;
-
-      r <<= 4;
-
-      // 'a' - 'f'
-      if (c >= 49 && c <= 54) {
-        r |= c - 49 + 0xa;
-
-      // 'A' - 'F'
-      } else if (c >= 17 && c <= 22) {
-        r |= c - 17 + 0xa;
-
-      // '0' - '9'
-      } else {
-        r |= c & 0xf;
-      }
-    }
-    return r;
-  }
-
-  BN.prototype._parseHex = function _parseHex (number, start) {
-    // Create possibly bigger array to ensure that it fits the number
-    this.length = Math.ceil((number.length - start) / 6);
-    this.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      this.words[i] = 0;
-    }
-
-    var j, w;
-    // Scan 24-bit chunks and add them to the number
-    var off = 0;
-    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
-      w = parseHex(number, i, i + 6);
-      this.words[j] |= (w << off) & 0x3ffffff;
-      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
-      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
-      off += 24;
-      if (off >= 26) {
-        off -= 26;
-        j++;
-      }
-    }
-    if (i + 6 !== start) {
-      w = parseHex(number, start, i + 6);
-      this.words[j] |= (w << off) & 0x3ffffff;
-      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
-    }
-    this.strip();
-  };
-
-  function parseBase (str, start, end, mul) {
-    var r = 0;
-    var len = Math.min(str.length, end);
-    for (var i = start; i < len; i++) {
-      var c = str.charCodeAt(i) - 48;
-
-      r *= mul;
-
-      // 'a'
-      if (c >= 49) {
-        r += c - 49 + 0xa;
-
-      // 'A'
-      } else if (c >= 17) {
-        r += c - 17 + 0xa;
-
-      // '0' - '9'
-      } else {
-        r += c;
-      }
-    }
-    return r;
-  }
-
-  BN.prototype._parseBase = function _parseBase (number, base, start) {
-    // Initialize as zero
-    this.words = [ 0 ];
-    this.length = 1;
-
-    // Find length of limb in base
-    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
-      limbLen++;
-    }
-    limbLen--;
-    limbPow = (limbPow / base) | 0;
-
-    var total = number.length - start;
-    var mod = total % limbLen;
-    var end = Math.min(total, total - mod) + start;
-
-    var word = 0;
-    for (var i = start; i < end; i += limbLen) {
-      word = parseBase(number, i, i + limbLen, base);
-
-      this.imuln(limbPow);
-      if (this.words[0] + word < 0x4000000) {
-        this.words[0] += word;
-      } else {
-        this._iaddn(word);
-      }
-    }
-
-    if (mod !== 0) {
-      var pow = 1;
-      word = parseBase(number, i, number.length, base);
-
-      for (i = 0; i < mod; i++) {
-        pow *= base;
-      }
-
-      this.imuln(pow);
-      if (this.words[0] + word < 0x4000000) {
-        this.words[0] += word;
-      } else {
-        this._iaddn(word);
-      }
-    }
-  };
-
-  BN.prototype.copy = function copy (dest) {
-    dest.words = new Array(this.length);
-    for (var i = 0; i < this.length; i++) {
-      dest.words[i] = this.words[i];
-    }
-    dest.length = this.length;
-    dest.negative = this.negative;
-    dest.red = this.red;
-  };
-
-  BN.prototype.clone = function clone () {
-    var r = new BN(null);
-    this.copy(r);
-    return r;
-  };
-
-  BN.prototype._expand = function _expand (size) {
-    while (this.length < size) {
-      this.words[this.length++] = 0;
-    }
-    return this;
-  };
-
-  // Remove leading `0` from `this`
-  BN.prototype.strip = function strip () {
-    while (this.length > 1 && this.words[this.length - 1] === 0) {
-      this.length--;
-    }
-    return this._normSign();
-  };
-
-  BN.prototype._normSign = function _normSign () {
-    // -0 = 0
-    if (this.length === 1 && this.words[0] === 0) {
-      this.negative = 0;
-    }
-    return this;
-  };
-
-  BN.prototype.inspect = function inspect () {
-    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
-  };
-
-  /*
-
-  var zeros = [];
-  var groupSizes = [];
-  var groupBases = [];
-
-  var s = '';
-  var i = -1;
-  while (++i < BN.wordSize) {
-    zeros[i] = s;
-    s += '0';
-  }
-  groupSizes[0] = 0;
-  groupSizes[1] = 0;
-  groupBases[0] = 0;
-  groupBases[1] = 0;
-  var base = 2 - 1;
-  while (++base < 36 + 1) {
-    var groupSize = 0;
-    var groupBase = 1;
-    while (groupBase < (1 << BN.wordSize) / base) {
-      groupBase *= base;
-      groupSize += 1;
-    }
-    groupSizes[base] = groupSize;
-    groupBases[base] = groupBase;
-  }
-
-  */
-
-  var zeros = [
-    '',
-    '0',
-    '00',
-    '000',
-    '0000',
-    '00000',
-    '000000',
-    '0000000',
-    '00000000',
-    '000000000',
-    '0000000000',
-    '00000000000',
-    '000000000000',
-    '0000000000000',
-    '00000000000000',
-    '000000000000000',
-    '0000000000000000',
-    '00000000000000000',
-    '000000000000000000',
-    '0000000000000000000',
-    '00000000000000000000',
-    '000000000000000000000',
-    '0000000000000000000000',
-    '00000000000000000000000',
-    '000000000000000000000000',
-    '0000000000000000000000000'
-  ];
-
-  var groupSizes = [
-    0, 0,
-    25, 16, 12, 11, 10, 9, 8,
-    8, 7, 7, 7, 7, 6, 6,
-    6, 6, 6, 6, 6, 5, 5,
-    5, 5, 5, 5, 5, 5, 5,
-    5, 5, 5, 5, 5, 5, 5
-  ];
-
-  var groupBases = [
-    0, 0,
-    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
-    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
-    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
-    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
-    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
-  ];
-
-  BN.prototype.toString = function toString (base, padding) {
-    base = base || 10;
-    padding = padding | 0 || 1;
-
-    var out;
-    if (base === 16 || base === 'hex') {
-      out = '';
-      var off = 0;
-      var carry = 0;
-      for (var i = 0; i < this.length; i++) {
-        var w = this.words[i];
-        var word = (((w << off) | carry) & 0xffffff).toString(16);
-        carry = (w >>> (24 - off)) & 0xffffff;
-        if (carry !== 0 || i !== this.length - 1) {
-          out = zeros[6 - word.length] + word + out;
-        } else {
-          out = word + out;
-        }
-        off += 2;
-        if (off >= 26) {
-          off -= 26;
-          i--;
-        }
-      }
-      if (carry !== 0) {
-        out = carry.toString(16) + out;
-      }
-      while (out.length % padding !== 0) {
-        out = '0' + out;
-      }
-      if (this.negative !== 0) {
-        out = '-' + out;
-      }
-      return out;
-    }
-
-    if (base === (base | 0) && base >= 2 && base <= 36) {
-      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
-      var groupSize = groupSizes[base];
-      // var groupBase = Math.pow(base, groupSize);
-      var groupBase = groupBases[base];
-      out = '';
-      var c = this.clone();
-      c.negative = 0;
-      while (!c.isZero()) {
-        var r = c.modn(groupBase).toString(base);
-        c = c.idivn(groupBase);
-
-        if (!c.isZero()) {
-          out = zeros[groupSize - r.length] + r + out;
-        } else {
-          out = r + out;
-        }
-      }
-      if (this.isZero()) {
-        out = '0' + out;
-      }
-      while (out.length % padding !== 0) {
-        out = '0' + out;
-      }
-      if (this.negative !== 0) {
-        out = '-' + out;
-      }
-      return out;
-    }
-
-    assert(false, 'Base should be between 2 and 36');
-  };
-
-  BN.prototype.toNumber = function toNumber () {
-    var ret = this.words[0];
-    if (this.length === 2) {
-      ret += this.words[1] * 0x4000000;
-    } else if (this.length === 3 && this.words[2] === 0x01) {
-      // NOTE: at this stage it is known that the top bit is set
-      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
-    } else if (this.length > 2) {
-      assert(false, 'Number can only safely store up to 53 bits');
-    }
-    return (this.negative !== 0) ? -ret : ret;
-  };
-
-  BN.prototype.toJSON = function toJSON () {
-    return this.toString(16);
-  };
-
-  BN.prototype.toBuffer = function toBuffer (endian, length) {
-    assert(typeof Buffer !== 'undefined');
-    return this.toArrayLike(Buffer, endian, length);
-  };
-
-  BN.prototype.toArray = function toArray (endian, length) {
-    return this.toArrayLike(Array, endian, length);
-  };
-
-  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
-    var byteLength = this.byteLength();
-    var reqLength = length || Math.max(1, byteLength);
-    assert(byteLength <= reqLength, 'byte array longer than desired length');
-    assert(reqLength > 0, 'Requested array length <= 0');
-
-    this.strip();
-    var littleEndian = endian === 'le';
-    var res = new ArrayType(reqLength);
-
-    var b, i;
-    var q = this.clone();
-    if (!littleEndian) {
-      // Assume big-endian
-      for (i = 0; i < reqLength - byteLength; i++) {
-        res[i] = 0;
-      }
-
-      for (i = 0; !q.isZero(); i++) {
-        b = q.andln(0xff);
-        q.iushrn(8);
-
-        res[reqLength - i - 1] = b;
-      }
-    } else {
-      for (i = 0; !q.isZero(); i++) {
-        b = q.andln(0xff);
-        q.iushrn(8);
-
-        res[i] = b;
-      }
-
-      for (; i < reqLength; i++) {
-        res[i] = 0;
-      }
-    }
-
-    return res;
-  };
-
-  if (Math.clz32) {
-    BN.prototype._countBits = function _countBits (w) {
-      return 32 - Math.clz32(w);
-    };
-  } else {
-    BN.prototype._countBits = function _countBits (w) {
-      var t = w;
-      var r = 0;
-      if (t >= 0x1000) {
-        r += 13;
-        t >>>= 13;
-      }
-      if (t >= 0x40) {
-        r += 7;
-        t >>>= 7;
-      }
-      if (t >= 0x8) {
-        r += 4;
-        t >>>= 4;
-      }
-      if (t >= 0x02) {
-        r += 2;
-        t >>>= 2;
-      }
-      return r + t;
-    };
-  }
-
-  BN.prototype._zeroBits = function _zeroBits (w) {
-    // Short-cut
-    if (w === 0) return 26;
-
-    var t = w;
-    var r = 0;
-    if ((t & 0x1fff) === 0) {
-      r += 13;
-      t >>>= 13;
-    }
-    if ((t & 0x7f) === 0) {
-      r += 7;
-      t >>>= 7;
-    }
-    if ((t & 0xf) === 0) {
-      r += 4;
-      t >>>= 4;
-    }
-    if ((t & 0x3) === 0) {
-      r += 2;
-      t >>>= 2;
-    }
-    if ((t & 0x1) === 0) {
-      r++;
-    }
-    return r;
-  };
-
-  // Return number of used bits in a BN
-  BN.prototype.bitLength = function bitLength () {
-    var w = this.words[this.length - 1];
-    var hi = this._countBits(w);
-    return (this.length - 1) * 26 + hi;
-  };
-
-  function toBitArray (num) {
-    var w = new Array(num.bitLength());
-
-    for (var bit = 0; bit < w.length; bit++) {
-      var off = (bit / 26) | 0;
-      var wbit = bit % 26;
-
-      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
-    }
-
-    return w;
-  }
-
-  // Number of trailing zero bits
-  BN.prototype.zeroBits = function zeroBits () {
-    if (this.isZero()) return 0;
-
-    var r = 0;
-    for (var i = 0; i < this.length; i++) {
-      var b = this._zeroBits(this.words[i]);
-      r += b;
-      if (b !== 26) break;
-    }
-    return r;
-  };
-
-  BN.prototype.byteLength = function byteLength () {
-    return Math.ceil(this.bitLength() / 8);
-  };
-
-  BN.prototype.toTwos = function toTwos (width) {
-    if (this.negative !== 0) {
-      return this.abs().inotn(width).iaddn(1);
-    }
-    return this.clone();
-  };
-
-  BN.prototype.fromTwos = function fromTwos (width) {
-    if (this.testn(width - 1)) {
-      return this.notn(width).iaddn(1).ineg();
-    }
-    return this.clone();
-  };
-
-  BN.prototype.isNeg = function isNeg () {
-    return this.negative !== 0;
-  };
-
-  // Return negative clone of `this`
-  BN.prototype.neg = function neg () {
-    return this.clone().ineg();
-  };
-
-  BN.prototype.ineg = function ineg () {
-    if (!this.isZero()) {
-      this.negative ^= 1;
-    }
-
-    return this;
-  };
-
-  // Or `num` with `this` in-place
-  BN.prototype.iuor = function iuor (num) {
-    while (this.length < num.length) {
-      this.words[this.length++] = 0;
-    }
-
-    for (var i = 0; i < num.length; i++) {
-      this.words[i] = this.words[i] | num.words[i];
-    }
-
-    return this.strip();
-  };
-
-  BN.prototype.ior = function ior (num) {
-    assert((this.negative | num.negative) === 0);
-    return this.iuor(num);
-  };
-
-  // Or `num` with `this`
-  BN.prototype.or = function or (num) {
-    if (this.length > num.length) return this.clone().ior(num);
-    return num.clone().ior(this);
-  };
+  // Or `num` with `this`
+  BN.prototype.or = function or (num) {
+    if (this.length > num.length) return this.clone().ior(num);
+    return num.clone().ior(this);
+  };
 
   BN.prototype.uor = function uor (num) {
     if (this.length > num.length) return this.clone().iuor(num);
@@ -79040,6 +71164,19 @@ bitcoinjs.bitcoin.networks.bitcoin.p2wpkh = {
     wif: 0x80
 };
 
+bitcoinjs.bitcoin.networks.testnet.p2wpkh = {
+    baseNetwork: "testnet",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'tb',
+    bip32: {
+        public: 0x045f1cf6,
+        private: 0x045f18bc
+    },
+    pubKeyHash: 0x6f,
+    scriptHash: 0xc4,
+    wif: 0xef
+};
+
 // p2wpkh in p2sh
 
 bitcoinjs.bitcoin.networks.bitcoin.p2wpkhInP2sh = {
@@ -79080,6 +71217,57 @@ bitcoinjs.bitcoin.networks.litecoin.p2wpkhInP2sh = {
     wif: 0xb0
 };
 
+bitcoinjs.bitcoin.networks.fujicoin.p2wpkh = {
+    baseNetwork: "fujicoin",
+    messagePrefix: '\x19FujiCoin Signed Message:\n',
+    bech32: 'fc',
+    bip32: {
+        public: 0x04b24746,
+        private: 0x04b2430c
+    },
+    pubKeyHash: 0x24,
+    scriptHash: 0x10,
+    wif: 0xa4
+};
+
+bitcoinjs.bitcoin.networks.fujicoin.p2wpkhInP2sh = {
+    baseNetwork: "fujicoin",
+    messagePrefix: '\x19FujiCoin Signed Message:\n',
+    bech32: 'fc',
+    bip32: {
+        public: 0x049d7cb2,
+        private: 0x049d7878
+    },
+    pubKeyHash: 0x24,
+    scriptHash: 0x10,
+    wif: 0xa4
+};
+
+bitcoinjs.bitcoin.networks.vertcoin.p2wpkh = {
+    baseNetwork: "vertcoin",
+    messagePrefix: '\x18Vertcoin Signed Message:\n',
+    bech32: 'vtc',
+    bip32: {
+        public: 0x0488b21e,
+        private: 0x0488ade4
+    },
+    pubKeyHash: 71,
+    scriptHash: 5,
+    wif: 0x80
+};
+
+bitcoinjs.bitcoin.networks.vertcoin.p2wpkhInP2sh = {
+    baseNetwork: "vertcoin",
+    messagePrefix: '\x18Vertcoin Signed Message:\n',
+    bip32: {
+        public: 0x0488b21e,
+        private: 0x0488ade4
+    },
+    pubKeyHash: 71,
+    scriptHash: 5,
+    wif: 0x80
+};
+
 })();
 </script>
         <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.ethUtil = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
@@ -93668,3501 +85856,12232 @@ module.exports = {
       ]
     ]
   }
-};
+};
+
+},{}],54:[function(require,module,exports){
+'use strict';
+
+var utils = exports;
+var BN = require('bn.js');
+
+utils.assert = function assert(val, msg) {
+  if (!val)
+    throw new Error(msg || 'Assertion failed');
+};
+
+function toArray(msg, enc) {
+  if (Array.isArray(msg))
+    return msg.slice();
+  if (!msg)
+    return [];
+  var res = [];
+  if (typeof msg !== 'string') {
+    for (var i = 0; i < msg.length; i++)
+      res[i] = msg[i] | 0;
+    return res;
+  }
+  if (!enc) {
+    for (var i = 0; i < msg.length; i++) {
+      var c = msg.charCodeAt(i);
+      var hi = c >> 8;
+      var lo = c & 0xff;
+      if (hi)
+        res.push(hi, lo);
+      else
+        res.push(lo);
+    }
+  } else if (enc === 'hex') {
+    msg = msg.replace(/[^a-z0-9]+/ig, '');
+    if (msg.length % 2 !== 0)
+      msg = '0' + msg;
+    for (var i = 0; i < msg.length; i += 2)
+      res.push(parseInt(msg[i] + msg[i + 1], 16));
+  }
+  return res;
+}
+utils.toArray = toArray;
+
+function zero2(word) {
+  if (word.length === 1)
+    return '0' + word;
+  else
+    return word;
+}
+utils.zero2 = zero2;
+
+function toHex(msg) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++)
+    res += zero2(msg[i].toString(16));
+  return res;
+}
+utils.toHex = toHex;
+
+utils.encode = function encode(arr, enc) {
+  if (enc === 'hex')
+    return toHex(arr);
+  else
+    return arr;
+};
+
+// Represent num in a w-NAF form
+function getNAF(num, w) {
+  var naf = [];
+  var ws = 1 << (w + 1);
+  var k = num.clone();
+  while (k.cmpn(1) >= 0) {
+    var z;
+    if (k.isOdd()) {
+      var mod = k.andln(ws - 1);
+      if (mod > (ws >> 1) - 1)
+        z = (ws >> 1) - mod;
+      else
+        z = mod;
+      k.isubn(z);
+    } else {
+      z = 0;
+    }
+    naf.push(z);
+
+    // Optimization, shift by word if possible
+    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
+    for (var i = 1; i < shift; i++)
+      naf.push(0);
+    k.iushrn(shift);
+  }
+
+  return naf;
+}
+utils.getNAF = getNAF;
+
+// Represent k1, k2 in a Joint Sparse Form
+function getJSF(k1, k2) {
+  var jsf = [
+    [],
+    []
+  ];
+
+  k1 = k1.clone();
+  k2 = k2.clone();
+  var d1 = 0;
+  var d2 = 0;
+  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {
+
+    // First phase
+    var m14 = (k1.andln(3) + d1) & 3;
+    var m24 = (k2.andln(3) + d2) & 3;
+    if (m14 === 3)
+      m14 = -1;
+    if (m24 === 3)
+      m24 = -1;
+    var u1;
+    if ((m14 & 1) === 0) {
+      u1 = 0;
+    } else {
+      var m8 = (k1.andln(7) + d1) & 7;
+      if ((m8 === 3 || m8 === 5) && m24 === 2)
+        u1 = -m14;
+      else
+        u1 = m14;
+    }
+    jsf[0].push(u1);
+
+    var u2;
+    if ((m24 & 1) === 0) {
+      u2 = 0;
+    } else {
+      var m8 = (k2.andln(7) + d2) & 7;
+      if ((m8 === 3 || m8 === 5) && m14 === 2)
+        u2 = -m24;
+      else
+        u2 = m24;
+    }
+    jsf[1].push(u2);
+
+    // Second phase
+    if (2 * d1 === u1 + 1)
+      d1 = 1 - d1;
+    if (2 * d2 === u2 + 1)
+      d2 = 1 - d2;
+    k1.iushrn(1);
+    k2.iushrn(1);
+  }
+
+  return jsf;
+}
+utils.getJSF = getJSF;
+
+function cachedProperty(obj, name, computer) {
+  var key = '_' + name;
+  obj.prototype[name] = function cachedProperty() {
+    return this[key] !== undefined ? this[key] :
+           this[key] = computer.call(this);
+  };
+}
+utils.cachedProperty = cachedProperty;
+
+function parseBytes(bytes) {
+  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
+                                     bytes;
+}
+utils.parseBytes = parseBytes;
+
+function intFromLE(bytes) {
+  return new BN(bytes, 'hex', 'le');
+}
+utils.intFromLE = intFromLE;
+
+
+},{"bn.js":33}],55:[function(require,module,exports){
+module.exports={
+  "_args": [
+    [
+      {
+        "raw": "elliptic@^6.2.3",
+        "scope": null,
+        "escapedName": "elliptic",
+        "name": "elliptic",
+        "rawSpec": "^6.2.3",
+        "spec": ">=6.2.3 <7.0.0",
+        "type": "range"
+      },
+      "/home/user/ethereum/ethereumjs-util/node_modules/secp256k1"
+    ]
+  ],
+  "_from": "elliptic@>=6.2.3 <7.0.0",
+  "_id": "elliptic@6.3.3",
+  "_inCache": true,
+  "_location": "/elliptic",
+  "_nodeVersion": "7.0.0",
+  "_npmOperationalInternal": {
+    "host": "packages-18-east.internal.npmjs.com",
+    "tmp": "tmp/elliptic-6.3.3.tgz_1486422837740_0.10658654430881143"
+  },
+  "_npmUser": {
+    "name": "indutny",
+    "email": "fedor@indutny.com"
+  },
+  "_npmVersion": "3.10.8",
+  "_phantomChildren": {},
+  "_requested": {
+    "raw": "elliptic@^6.2.3",
+    "scope": null,
+    "escapedName": "elliptic",
+    "name": "elliptic",
+    "rawSpec": "^6.2.3",
+    "spec": ">=6.2.3 <7.0.0",
+    "type": "range"
+  },
+  "_requiredBy": [
+    "/browserify-sign",
+    "/create-ecdh",
+    "/secp256k1"
+  ],
+  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
+  "_shasum": "5482d9646d54bcb89fd7d994fc9e2e9568876e3f",
+  "_shrinkwrap": null,
+  "_spec": "elliptic@^6.2.3",
+  "_where": "/home/user/ethereum/ethereumjs-util/node_modules/secp256k1",
+  "author": {
+    "name": "Fedor Indutny",
+    "email": "fedor@indutny.com"
+  },
+  "bugs": {
+    "url": "https://github.com/indutny/elliptic/issues"
+  },
+  "dependencies": {
+    "bn.js": "^4.4.0",
+    "brorand": "^1.0.1",
+    "hash.js": "^1.0.0",
+    "inherits": "^2.0.1"
+  },
+  "description": "EC cryptography",
+  "devDependencies": {
+    "brfs": "^1.4.3",
+    "coveralls": "^2.11.3",
+    "grunt": "^0.4.5",
+    "grunt-browserify": "^5.0.0",
+    "grunt-cli": "^1.2.0",
+    "grunt-contrib-connect": "^1.0.0",
+    "grunt-contrib-copy": "^1.0.0",
+    "grunt-contrib-uglify": "^1.0.1",
+    "grunt-mocha-istanbul": "^3.0.1",
+    "grunt-saucelabs": "^8.6.2",
+    "istanbul": "^0.4.2",
+    "jscs": "^2.9.0",
+    "jshint": "^2.6.0",
+    "mocha": "^2.1.0"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "5482d9646d54bcb89fd7d994fc9e2e9568876e3f",
+    "tarball": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz"
+  },
+  "files": [
+    "lib"
+  ],
+  "gitHead": "63aee8d697e9b7fac37ece24222029117a890a7e",
+  "homepage": "https://github.com/indutny/elliptic",
+  "keywords": [
+    "EC",
+    "Elliptic",
+    "curve",
+    "Cryptography"
+  ],
+  "license": "MIT",
+  "main": "lib/elliptic.js",
+  "maintainers": [
+    {
+      "name": "indutny",
+      "email": "fedor@indutny.com"
+    }
+  ],
+  "name": "elliptic",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/indutny/elliptic.git"
+  },
+  "scripts": {
+    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
+    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
+    "lint": "npm run jscs && npm run jshint",
+    "test": "npm run lint && npm run unit",
+    "unit": "istanbul test _mocha --reporter=spec test/index.js",
+    "version": "grunt dist && git add dist/"
+  },
+  "version": "6.3.3"
+}
+
+},{}],56:[function(require,module,exports){
+(function (Buffer){
+'use strict';
+
+var isHexPrefixed = require('is-hex-prefixed');
+var stripHexPrefix = require('strip-hex-prefix');
+
+/**
+ * Pads a `String` to have an even length
+ * @param {String} value
+ * @return {String} output
+ */
+function padToEven(value) {
+  var a = value; // eslint-disable-line
+
+  if (typeof a !== 'string') {
+    throw new Error('[ethjs-util] while padding to even, value must be string, is currently ' + typeof a + ', while padToEven.');
+  }
+
+  if (a.length % 2) {
+    a = '0' + a;
+  }
+
+  return a;
+}
+
+/**
+ * Converts a `Number` into a hex `String`
+ * @param {Number} i
+ * @return {String}
+ */
+function intToHex(i) {
+  var hex = i.toString(16); // eslint-disable-line
+
+  return '0x' + padToEven(hex);
+}
+
+/**
+ * Converts an `Number` to a `Buffer`
+ * @param {Number} i
+ * @return {Buffer}
+ */
+function intToBuffer(i) {
+  var hex = intToHex(i);
+
+  return new Buffer(hex.slice(2), 'hex');
+}
+
+/**
+ * Get the binary size of a string
+ * @param {String} str
+ * @return {Number}
+ */
+function getBinarySize(str) {
+  if (typeof str !== 'string') {
+    throw new Error('[ethjs-util] while getting binary size, method getBinarySize requires input \'str\' to be type String, got \'' + typeof str + '\'.');
+  }
+
+  return Buffer.byteLength(str, 'utf8');
+}
+
+/**
+ * Returns TRUE if the first specified array contains all elements
+ * from the second one. FALSE otherwise.
+ *
+ * @param {array} superset
+ * @param {array} subset
+ *
+ * @returns {boolean}
+ */
+function arrayContainsArray(superset, subset, some) {
+  if (Array.isArray(superset) !== true) {
+    throw new Error('[ethjs-util] method arrayContainsArray requires input \'superset\' to be an array got type \'' + typeof superset + '\'');
+  }
+  if (Array.isArray(subset) !== true) {
+    throw new Error('[ethjs-util] method arrayContainsArray requires input \'subset\' to be an array got type \'' + typeof subset + '\'');
+  }
+
+  return subset[Boolean(some) && 'some' || 'every'](function (value) {
+    return superset.indexOf(value) >= 0;
+  });
+}
+
+/**
+ * Should be called to get utf8 from it's hex representation
+ *
+ * @method toUtf8
+ * @param {String} string in hex
+ * @returns {String} ascii string representation of hex value
+ */
+function toUtf8(hex) {
+  var bufferValue = new Buffer(padToEven(stripHexPrefix(hex).replace(/^0+|0+$/g, '')), 'hex');
+
+  return bufferValue.toString('utf8');
+}
+
+/**
+ * Should be called to get ascii from it's hex representation
+ *
+ * @method toAscii
+ * @param {String} string in hex
+ * @returns {String} ascii string representation of hex value
+ */
+function toAscii(hex) {
+  var str = ''; // eslint-disable-line
+  var i = 0,
+      l = hex.length; // eslint-disable-line
+
+  if (hex.substring(0, 2) === '0x') {
+    i = 2;
+  }
+
+  for (; i < l; i += 2) {
+    var code = parseInt(hex.substr(i, 2), 16);
+    str += String.fromCharCode(code);
+  }
+
+  return str;
+}
+
+/**
+ * Should be called to get hex representation (prefixed by 0x) of utf8 string
+ *
+ * @method fromUtf8
+ * @param {String} string
+ * @param {Number} optional padding
+ * @returns {String} hex representation of input string
+ */
+function fromUtf8(stringValue) {
+  var str = new Buffer(stringValue, 'utf8');
+
+  return '0x' + padToEven(str.toString('hex')).replace(/^0+|0+$/g, '');
+}
+
+/**
+ * Should be called to get hex representation (prefixed by 0x) of ascii string
+ *
+ * @method fromAscii
+ * @param {String} string
+ * @param {Number} optional padding
+ * @returns {String} hex representation of input string
+ */
+function fromAscii(stringValue) {
+  var hex = ''; // eslint-disable-line
+  for (var i = 0; i < stringValue.length; i++) {
+    // eslint-disable-line
+    var code = stringValue.charCodeAt(i);
+    var n = code.toString(16);
+    hex += n.length < 2 ? '0' + n : n;
+  }
+
+  return '0x' + hex;
+}
+
+/**
+ * getKeys([{a: 1, b: 2}, {a: 3, b: 4}], 'a') => [1, 3]
+ *
+ * @method getKeys get specific key from inner object array of objects
+ * @param {String} params
+ * @param {String} key
+ * @param {Boolean} allowEmpty
+ * @returns {Array} output just a simple array of output keys
+ */
+function getKeys(params, key, allowEmpty) {
+  if (!Array.isArray(params)) {
+    throw new Error('[ethjs-util] method getKeys expecting type Array as \'params\' input, got \'' + typeof params + '\'');
+  }
+  if (typeof key !== 'string') {
+    throw new Error('[ethjs-util] method getKeys expecting type String for input \'key\' got \'' + typeof key + '\'.');
+  }
+
+  var result = []; // eslint-disable-line
+
+  for (var i = 0; i < params.length; i++) {
+    // eslint-disable-line
+    var value = params[i][key]; // eslint-disable-line
+    if (allowEmpty && !value) {
+      value = '';
+    } else if (typeof value !== 'string') {
+      throw new Error('invalid abi');
+    }
+    result.push(value);
+  }
+
+  return result;
+}
+
+/**
+ * Is the string a hex string.
+ *
+ * @method check if string is hex string of specific length
+ * @param {String} value
+ * @param {Number} length
+ * @returns {Boolean} output the string is a hex string
+ */
+function isHexString(value, length) {
+  if (typeof value !== 'string' || !value.match(/^0x[0-9A-Fa-f]*$/)) {
+    return false;
+  }
+
+  if (length && value.length !== 2 + 2 * length) {
+    return false;
+  }
+
+  return true;
+}
+
+module.exports = {
+  arrayContainsArray: arrayContainsArray,
+  intToBuffer: intToBuffer,
+  getBinarySize: getBinarySize,
+  isHexPrefixed: isHexPrefixed,
+  stripHexPrefix: stripHexPrefix,
+  padToEven: padToEven,
+  intToHex: intToHex,
+  fromAscii: fromAscii,
+  fromUtf8: fromUtf8,
+  toAscii: toAscii,
+  toUtf8: toUtf8,
+  getKeys: getKeys,
+  isHexString: isHexString
+};
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"is-hex-prefixed":64,"strip-hex-prefix":87}],57:[function(require,module,exports){
+var hash = exports;
+
+hash.utils = require('./hash/utils');
+hash.common = require('./hash/common');
+hash.sha = require('./hash/sha');
+hash.ripemd = require('./hash/ripemd');
+hash.hmac = require('./hash/hmac');
+
+// Proxy hash functions to the main object
+hash.sha1 = hash.sha.sha1;
+hash.sha256 = hash.sha.sha256;
+hash.sha224 = hash.sha.sha224;
+hash.sha384 = hash.sha.sha384;
+hash.sha512 = hash.sha.sha512;
+hash.ripemd160 = hash.ripemd.ripemd160;
+
+},{"./hash/common":58,"./hash/hmac":59,"./hash/ripemd":60,"./hash/sha":61,"./hash/utils":62}],58:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
+
+function BlockHash() {
+  this.pending = null;
+  this.pendingTotal = 0;
+  this.blockSize = this.constructor.blockSize;
+  this.outSize = this.constructor.outSize;
+  this.hmacStrength = this.constructor.hmacStrength;
+  this.padLength = this.constructor.padLength / 8;
+  this.endian = 'big';
+
+  this._delta8 = this.blockSize / 8;
+  this._delta32 = this.blockSize / 32;
+}
+exports.BlockHash = BlockHash;
+
+BlockHash.prototype.update = function update(msg, enc) {
+  // Convert message to array, pad it, and join into 32bit blocks
+  msg = utils.toArray(msg, enc);
+  if (!this.pending)
+    this.pending = msg;
+  else
+    this.pending = this.pending.concat(msg);
+  this.pendingTotal += msg.length;
+
+  // Enough data, try updating
+  if (this.pending.length >= this._delta8) {
+    msg = this.pending;
+
+    // Process pending data in blocks
+    var r = msg.length % this._delta8;
+    this.pending = msg.slice(msg.length - r, msg.length);
+    if (this.pending.length === 0)
+      this.pending = null;
+
+    msg = utils.join32(msg, 0, msg.length - r, this.endian);
+    for (var i = 0; i < msg.length; i += this._delta32)
+      this._update(msg, i, i + this._delta32);
+  }
+
+  return this;
+};
+
+BlockHash.prototype.digest = function digest(enc) {
+  this.update(this._pad());
+  assert(this.pending === null);
+
+  return this._digest(enc);
+};
+
+BlockHash.prototype._pad = function pad() {
+  var len = this.pendingTotal;
+  var bytes = this._delta8;
+  var k = bytes - ((len + this.padLength) % bytes);
+  var res = new Array(k + this.padLength);
+  res[0] = 0x80;
+  for (var i = 1; i < k; i++)
+    res[i] = 0;
+
+  // Append length
+  len <<= 3;
+  if (this.endian === 'big') {
+    for (var t = 8; t < this.padLength; t++)
+      res[i++] = 0;
+
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = (len >>> 24) & 0xff;
+    res[i++] = (len >>> 16) & 0xff;
+    res[i++] = (len >>> 8) & 0xff;
+    res[i++] = len & 0xff;
+  } else {
+    res[i++] = len & 0xff;
+    res[i++] = (len >>> 8) & 0xff;
+    res[i++] = (len >>> 16) & 0xff;
+    res[i++] = (len >>> 24) & 0xff;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+
+    for (var t = 8; t < this.padLength; t++)
+      res[i++] = 0;
+  }
+
+  return res;
+};
+
+},{"../hash":57}],59:[function(require,module,exports){
+var hmac = exports;
+
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
+
+function Hmac(hash, key, enc) {
+  if (!(this instanceof Hmac))
+    return new Hmac(hash, key, enc);
+  this.Hash = hash;
+  this.blockSize = hash.blockSize / 8;
+  this.outSize = hash.outSize / 8;
+  this.inner = null;
+  this.outer = null;
+
+  this._init(utils.toArray(key, enc));
+}
+module.exports = Hmac;
+
+Hmac.prototype._init = function init(key) {
+  // Shorten key, if needed
+  if (key.length > this.blockSize)
+    key = new this.Hash().update(key).digest();
+  assert(key.length <= this.blockSize);
+
+  // Add padding to key
+  for (var i = key.length; i < this.blockSize; i++)
+    key.push(0);
+
+  for (var i = 0; i < key.length; i++)
+    key[i] ^= 0x36;
+  this.inner = new this.Hash().update(key);
+
+  // 0x36 ^ 0x5c = 0x6a
+  for (var i = 0; i < key.length; i++)
+    key[i] ^= 0x6a;
+  this.outer = new this.Hash().update(key);
+};
+
+Hmac.prototype.update = function update(msg, enc) {
+  this.inner.update(msg, enc);
+  return this;
+};
+
+Hmac.prototype.digest = function digest(enc) {
+  this.outer.update(this.inner.digest());
+  return this.outer.digest(enc);
+};
+
+},{"../hash":57}],60:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
+
+var rotl32 = utils.rotl32;
+var sum32 = utils.sum32;
+var sum32_3 = utils.sum32_3;
+var sum32_4 = utils.sum32_4;
+var BlockHash = hash.common.BlockHash;
+
+function RIPEMD160() {
+  if (!(this instanceof RIPEMD160))
+    return new RIPEMD160();
+
+  BlockHash.call(this);
+
+  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
+  this.endian = 'little';
+}
+utils.inherits(RIPEMD160, BlockHash);
+exports.ripemd160 = RIPEMD160;
+
+RIPEMD160.blockSize = 512;
+RIPEMD160.outSize = 160;
+RIPEMD160.hmacStrength = 192;
+RIPEMD160.padLength = 64;
+
+RIPEMD160.prototype._update = function update(msg, start) {
+  var A = this.h[0];
+  var B = this.h[1];
+  var C = this.h[2];
+  var D = this.h[3];
+  var E = this.h[4];
+  var Ah = A;
+  var Bh = B;
+  var Ch = C;
+  var Dh = D;
+  var Eh = E;
+  for (var j = 0; j < 80; j++) {
+    var T = sum32(
+      rotl32(
+        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
+        s[j]),
+      E);
+    A = E;
+    E = D;
+    D = rotl32(C, 10);
+    C = B;
+    B = T;
+    T = sum32(
+      rotl32(
+        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
+        sh[j]),
+      Eh);
+    Ah = Eh;
+    Eh = Dh;
+    Dh = rotl32(Ch, 10);
+    Ch = Bh;
+    Bh = T;
+  }
+  T = sum32_3(this.h[1], C, Dh);
+  this.h[1] = sum32_3(this.h[2], D, Eh);
+  this.h[2] = sum32_3(this.h[3], E, Ah);
+  this.h[3] = sum32_3(this.h[4], A, Bh);
+  this.h[4] = sum32_3(this.h[0], B, Ch);
+  this.h[0] = T;
+};
+
+RIPEMD160.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'little');
+  else
+    return utils.split32(this.h, 'little');
+};
+
+function f(j, x, y, z) {
+  if (j <= 15)
+    return x ^ y ^ z;
+  else if (j <= 31)
+    return (x & y) | ((~x) & z);
+  else if (j <= 47)
+    return (x | (~y)) ^ z;
+  else if (j <= 63)
+    return (x & z) | (y & (~z));
+  else
+    return x ^ (y | (~z));
+}
+
+function K(j) {
+  if (j <= 15)
+    return 0x00000000;
+  else if (j <= 31)
+    return 0x5a827999;
+  else if (j <= 47)
+    return 0x6ed9eba1;
+  else if (j <= 63)
+    return 0x8f1bbcdc;
+  else
+    return 0xa953fd4e;
+}
+
+function Kh(j) {
+  if (j <= 15)
+    return 0x50a28be6;
+  else if (j <= 31)
+    return 0x5c4dd124;
+  else if (j <= 47)
+    return 0x6d703ef3;
+  else if (j <= 63)
+    return 0x7a6d76e9;
+  else
+    return 0x00000000;
+}
+
+var r = [
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
+  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
+  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
+  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+];
+
+var rh = [
+  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
+  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
+  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
+  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
+  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+];
+
+var s = [
+  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
+  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
+  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
+  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
+  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+];
+
+var sh = [
+  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
+  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
+  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
+  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
+  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+];
+
+},{"../hash":57}],61:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
+
+var rotr32 = utils.rotr32;
+var rotl32 = utils.rotl32;
+var sum32 = utils.sum32;
+var sum32_4 = utils.sum32_4;
+var sum32_5 = utils.sum32_5;
+var rotr64_hi = utils.rotr64_hi;
+var rotr64_lo = utils.rotr64_lo;
+var shr64_hi = utils.shr64_hi;
+var shr64_lo = utils.shr64_lo;
+var sum64 = utils.sum64;
+var sum64_hi = utils.sum64_hi;
+var sum64_lo = utils.sum64_lo;
+var sum64_4_hi = utils.sum64_4_hi;
+var sum64_4_lo = utils.sum64_4_lo;
+var sum64_5_hi = utils.sum64_5_hi;
+var sum64_5_lo = utils.sum64_5_lo;
+var BlockHash = hash.common.BlockHash;
+
+var sha256_K = [
+  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
+  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
+  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
+  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
+  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+];
+
+var sha512_K = [
+  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
+  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
+  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
+  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
+  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
+  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
+  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
+  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
+  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
+  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
+  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
+  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
+  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
+  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
+  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
+  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
+  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
+  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
+  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
+  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
+  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
+  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
+  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
+  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
+  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
+  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
+  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
+  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
+  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
+  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
+  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
+  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
+  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
+  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
+  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
+  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
+  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
+  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
+  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
+  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
+];
+
+var sha1_K = [
+  0x5A827999, 0x6ED9EBA1,
+  0x8F1BBCDC, 0xCA62C1D6
+];
+
+function SHA256() {
+  if (!(this instanceof SHA256))
+    return new SHA256();
+
+  BlockHash.call(this);
+  this.h = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+             0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
+  this.k = sha256_K;
+  this.W = new Array(64);
+}
+utils.inherits(SHA256, BlockHash);
+exports.sha256 = SHA256;
+
+SHA256.blockSize = 512;
+SHA256.outSize = 256;
+SHA256.hmacStrength = 192;
+SHA256.padLength = 64;
+
+SHA256.prototype._update = function _update(msg, start) {
+  var W = this.W;
+
+  for (var i = 0; i < 16; i++)
+    W[i] = msg[start + i];
+  for (; i < W.length; i++)
+    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);
+
+  var a = this.h[0];
+  var b = this.h[1];
+  var c = this.h[2];
+  var d = this.h[3];
+  var e = this.h[4];
+  var f = this.h[5];
+  var g = this.h[6];
+  var h = this.h[7];
+
+  assert(this.k.length === W.length);
+  for (var i = 0; i < W.length; i++) {
+    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
+    var T2 = sum32(s0_256(a), maj32(a, b, c));
+    h = g;
+    g = f;
+    f = e;
+    e = sum32(d, T1);
+    d = c;
+    c = b;
+    b = a;
+    a = sum32(T1, T2);
+  }
+
+  this.h[0] = sum32(this.h[0], a);
+  this.h[1] = sum32(this.h[1], b);
+  this.h[2] = sum32(this.h[2], c);
+  this.h[3] = sum32(this.h[3], d);
+  this.h[4] = sum32(this.h[4], e);
+  this.h[5] = sum32(this.h[5], f);
+  this.h[6] = sum32(this.h[6], g);
+  this.h[7] = sum32(this.h[7], h);
+};
+
+SHA256.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
+
+function SHA224() {
+  if (!(this instanceof SHA224))
+    return new SHA224();
+
+  SHA256.call(this);
+  this.h = [ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
+             0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
+}
+utils.inherits(SHA224, SHA256);
+exports.sha224 = SHA224;
+
+SHA224.blockSize = 512;
+SHA224.outSize = 224;
+SHA224.hmacStrength = 192;
+SHA224.padLength = 64;
+
+SHA224.prototype._digest = function digest(enc) {
+  // Just truncate output
+  if (enc === 'hex')
+    return utils.toHex32(this.h.slice(0, 7), 'big');
+  else
+    return utils.split32(this.h.slice(0, 7), 'big');
+};
+
+function SHA512() {
+  if (!(this instanceof SHA512))
+    return new SHA512();
+
+  BlockHash.call(this);
+  this.h = [ 0x6a09e667, 0xf3bcc908,
+             0xbb67ae85, 0x84caa73b,
+             0x3c6ef372, 0xfe94f82b,
+             0xa54ff53a, 0x5f1d36f1,
+             0x510e527f, 0xade682d1,
+             0x9b05688c, 0x2b3e6c1f,
+             0x1f83d9ab, 0xfb41bd6b,
+             0x5be0cd19, 0x137e2179 ];
+  this.k = sha512_K;
+  this.W = new Array(160);
+}
+utils.inherits(SHA512, BlockHash);
+exports.sha512 = SHA512;
+
+SHA512.blockSize = 1024;
+SHA512.outSize = 512;
+SHA512.hmacStrength = 192;
+SHA512.padLength = 128;
+
+SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
+  var W = this.W;
+
+  // 32 x 32bit words
+  for (var i = 0; i < 32; i++)
+    W[i] = msg[start + i];
+  for (; i < W.length; i += 2) {
+    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
+    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
+    var c1_hi = W[i - 14];  // i - 7
+    var c1_lo = W[i - 13];
+    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
+    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
+    var c3_hi = W[i - 32];  // i - 16
+    var c3_lo = W[i - 31];
+
+    W[i] = sum64_4_hi(c0_hi, c0_lo,
+                      c1_hi, c1_lo,
+                      c2_hi, c2_lo,
+                      c3_hi, c3_lo);
+    W[i + 1] = sum64_4_lo(c0_hi, c0_lo,
+                          c1_hi, c1_lo,
+                          c2_hi, c2_lo,
+                          c3_hi, c3_lo);
+  }
+};
+
+SHA512.prototype._update = function _update(msg, start) {
+  this._prepareBlock(msg, start);
+
+  var W = this.W;
+
+  var ah = this.h[0];
+  var al = this.h[1];
+  var bh = this.h[2];
+  var bl = this.h[3];
+  var ch = this.h[4];
+  var cl = this.h[5];
+  var dh = this.h[6];
+  var dl = this.h[7];
+  var eh = this.h[8];
+  var el = this.h[9];
+  var fh = this.h[10];
+  var fl = this.h[11];
+  var gh = this.h[12];
+  var gl = this.h[13];
+  var hh = this.h[14];
+  var hl = this.h[15];
+
+  assert(this.k.length === W.length);
+  for (var i = 0; i < W.length; i += 2) {
+    var c0_hi = hh;
+    var c0_lo = hl;
+    var c1_hi = s1_512_hi(eh, el);
+    var c1_lo = s1_512_lo(eh, el);
+    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
+    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
+    var c3_hi = this.k[i];
+    var c3_lo = this.k[i + 1];
+    var c4_hi = W[i];
+    var c4_lo = W[i + 1];
+
+    var T1_hi = sum64_5_hi(c0_hi, c0_lo,
+                           c1_hi, c1_lo,
+                           c2_hi, c2_lo,
+                           c3_hi, c3_lo,
+                           c4_hi, c4_lo);
+    var T1_lo = sum64_5_lo(c0_hi, c0_lo,
+                           c1_hi, c1_lo,
+                           c2_hi, c2_lo,
+                           c3_hi, c3_lo,
+                           c4_hi, c4_lo);
+
+    var c0_hi = s0_512_hi(ah, al);
+    var c0_lo = s0_512_lo(ah, al);
+    var c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
+    var c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);
+
+    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
+    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);
+
+    hh = gh;
+    hl = gl;
+
+    gh = fh;
+    gl = fl;
+
+    fh = eh;
+    fl = el;
+
+    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
+    el = sum64_lo(dl, dl, T1_hi, T1_lo);
+
+    dh = ch;
+    dl = cl;
+
+    ch = bh;
+    cl = bl;
+
+    bh = ah;
+    bl = al;
+
+    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
+    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
+  }
+
+  sum64(this.h, 0, ah, al);
+  sum64(this.h, 2, bh, bl);
+  sum64(this.h, 4, ch, cl);
+  sum64(this.h, 6, dh, dl);
+  sum64(this.h, 8, eh, el);
+  sum64(this.h, 10, fh, fl);
+  sum64(this.h, 12, gh, gl);
+  sum64(this.h, 14, hh, hl);
+};
+
+SHA512.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
+
+function SHA384() {
+  if (!(this instanceof SHA384))
+    return new SHA384();
+
+  SHA512.call(this);
+  this.h = [ 0xcbbb9d5d, 0xc1059ed8,
+             0x629a292a, 0x367cd507,
+             0x9159015a, 0x3070dd17,
+             0x152fecd8, 0xf70e5939,
+             0x67332667, 0xffc00b31,
+             0x8eb44a87, 0x68581511,
+             0xdb0c2e0d, 0x64f98fa7,
+             0x47b5481d, 0xbefa4fa4 ];
+}
+utils.inherits(SHA384, SHA512);
+exports.sha384 = SHA384;
+
+SHA384.blockSize = 1024;
+SHA384.outSize = 384;
+SHA384.hmacStrength = 192;
+SHA384.padLength = 128;
+
+SHA384.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h.slice(0, 12), 'big');
+  else
+    return utils.split32(this.h.slice(0, 12), 'big');
+};
+
+function SHA1() {
+  if (!(this instanceof SHA1))
+    return new SHA1();
+
+  BlockHash.call(this);
+  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe,
+             0x10325476, 0xc3d2e1f0 ];
+  this.W = new Array(80);
+}
+
+utils.inherits(SHA1, BlockHash);
+exports.sha1 = SHA1;
+
+SHA1.blockSize = 512;
+SHA1.outSize = 160;
+SHA1.hmacStrength = 80;
+SHA1.padLength = 64;
+
+SHA1.prototype._update = function _update(msg, start) {
+  var W = this.W;
+
+  for (var i = 0; i < 16; i++)
+    W[i] = msg[start + i];
+
+  for(; i < W.length; i++)
+    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
+
+  var a = this.h[0];
+  var b = this.h[1];
+  var c = this.h[2];
+  var d = this.h[3];
+  var e = this.h[4];
+
+  for (var i = 0; i < W.length; i++) {
+    var s = ~~(i / 20);
+    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
+    e = d;
+    d = c;
+    c = rotl32(b, 30);
+    b = a;
+    a = t;
+  }
+
+  this.h[0] = sum32(this.h[0], a);
+  this.h[1] = sum32(this.h[1], b);
+  this.h[2] = sum32(this.h[2], c);
+  this.h[3] = sum32(this.h[3], d);
+  this.h[4] = sum32(this.h[4], e);
+};
+
+SHA1.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
+
+function ch32(x, y, z) {
+  return (x & y) ^ ((~x) & z);
+}
+
+function maj32(x, y, z) {
+  return (x & y) ^ (x & z) ^ (y & z);
+}
+
+function p32(x, y, z) {
+  return x ^ y ^ z;
+}
+
+function s0_256(x) {
+  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
+}
+
+function s1_256(x) {
+  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
+}
+
+function g0_256(x) {
+  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
+}
+
+function g1_256(x) {
+  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
+}
+
+function ft_1(s, x, y, z) {
+  if (s === 0)
+    return ch32(x, y, z);
+  if (s === 1 || s === 3)
+    return p32(x, y, z);
+  if (s === 2)
+    return maj32(x, y, z);
+}
+
+function ch64_hi(xh, xl, yh, yl, zh, zl) {
+  var r = (xh & yh) ^ ((~xh) & zh);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function ch64_lo(xh, xl, yh, yl, zh, zl) {
+  var r = (xl & yl) ^ ((~xl) & zl);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function maj64_hi(xh, xl, yh, yl, zh, zl) {
+  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function maj64_lo(xh, xl, yh, yl, zh, zl) {
+  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function s0_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 28);
+  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
+  var c2_hi = rotr64_hi(xl, xh, 7);  // 39
+
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function s0_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 28);
+  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
+  var c2_lo = rotr64_lo(xl, xh, 7);  // 39
+
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function s1_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 14);
+  var c1_hi = rotr64_hi(xh, xl, 18);
+  var c2_hi = rotr64_hi(xl, xh, 9);  // 41
+
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function s1_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 14);
+  var c1_lo = rotr64_lo(xh, xl, 18);
+  var c2_lo = rotr64_lo(xl, xh, 9);  // 41
+
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function g0_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 1);
+  var c1_hi = rotr64_hi(xh, xl, 8);
+  var c2_hi = shr64_hi(xh, xl, 7);
+
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function g0_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 1);
+  var c1_lo = rotr64_lo(xh, xl, 8);
+  var c2_lo = shr64_lo(xh, xl, 7);
+
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function g1_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 19);
+  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
+  var c2_hi = shr64_hi(xh, xl, 6);
+
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+function g1_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 19);
+  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
+  var c2_lo = shr64_lo(xh, xl, 6);
+
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
+
+},{"../hash":57}],62:[function(require,module,exports){
+var utils = exports;
+var inherits = require('inherits');
+
+function toArray(msg, enc) {
+  if (Array.isArray(msg))
+    return msg.slice();
+  if (!msg)
+    return [];
+  var res = [];
+  if (typeof msg === 'string') {
+    if (!enc) {
+      for (var i = 0; i < msg.length; i++) {
+        var c = msg.charCodeAt(i);
+        var hi = c >> 8;
+        var lo = c & 0xff;
+        if (hi)
+          res.push(hi, lo);
+        else
+          res.push(lo);
+      }
+    } else if (enc === 'hex') {
+      msg = msg.replace(/[^a-z0-9]+/ig, '');
+      if (msg.length % 2 !== 0)
+        msg = '0' + msg;
+      for (var i = 0; i < msg.length; i += 2)
+        res.push(parseInt(msg[i] + msg[i + 1], 16));
+    }
+  } else {
+    for (var i = 0; i < msg.length; i++)
+      res[i] = msg[i] | 0;
+  }
+  return res;
+}
+utils.toArray = toArray;
+
+function toHex(msg) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++)
+    res += zero2(msg[i].toString(16));
+  return res;
+}
+utils.toHex = toHex;
+
+function htonl(w) {
+  var res = (w >>> 24) |
+            ((w >>> 8) & 0xff00) |
+            ((w << 8) & 0xff0000) |
+            ((w & 0xff) << 24);
+  return res >>> 0;
+}
+utils.htonl = htonl;
+
+function toHex32(msg, endian) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++) {
+    var w = msg[i];
+    if (endian === 'little')
+      w = htonl(w);
+    res += zero8(w.toString(16));
+  }
+  return res;
+}
+utils.toHex32 = toHex32;
+
+function zero2(word) {
+  if (word.length === 1)
+    return '0' + word;
+  else
+    return word;
+}
+utils.zero2 = zero2;
+
+function zero8(word) {
+  if (word.length === 7)
+    return '0' + word;
+  else if (word.length === 6)
+    return '00' + word;
+  else if (word.length === 5)
+    return '000' + word;
+  else if (word.length === 4)
+    return '0000' + word;
+  else if (word.length === 3)
+    return '00000' + word;
+  else if (word.length === 2)
+    return '000000' + word;
+  else if (word.length === 1)
+    return '0000000' + word;
+  else
+    return word;
+}
+utils.zero8 = zero8;
+
+function join32(msg, start, end, endian) {
+  var len = end - start;
+  assert(len % 4 === 0);
+  var res = new Array(len / 4);
+  for (var i = 0, k = start; i < res.length; i++, k += 4) {
+    var w;
+    if (endian === 'big')
+      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
+    else
+      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
+    res[i] = w >>> 0;
+  }
+  return res;
+}
+utils.join32 = join32;
+
+function split32(msg, endian) {
+  var res = new Array(msg.length * 4);
+  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
+    var m = msg[i];
+    if (endian === 'big') {
+      res[k] = m >>> 24;
+      res[k + 1] = (m >>> 16) & 0xff;
+      res[k + 2] = (m >>> 8) & 0xff;
+      res[k + 3] = m & 0xff;
+    } else {
+      res[k + 3] = m >>> 24;
+      res[k + 2] = (m >>> 16) & 0xff;
+      res[k + 1] = (m >>> 8) & 0xff;
+      res[k] = m & 0xff;
+    }
+  }
+  return res;
+}
+utils.split32 = split32;
+
+function rotr32(w, b) {
+  return (w >>> b) | (w << (32 - b));
+}
+utils.rotr32 = rotr32;
+
+function rotl32(w, b) {
+  return (w << b) | (w >>> (32 - b));
+}
+utils.rotl32 = rotl32;
+
+function sum32(a, b) {
+  return (a + b) >>> 0;
+}
+utils.sum32 = sum32;
+
+function sum32_3(a, b, c) {
+  return (a + b + c) >>> 0;
+}
+utils.sum32_3 = sum32_3;
+
+function sum32_4(a, b, c, d) {
+  return (a + b + c + d) >>> 0;
+}
+utils.sum32_4 = sum32_4;
+
+function sum32_5(a, b, c, d, e) {
+  return (a + b + c + d + e) >>> 0;
+}
+utils.sum32_5 = sum32_5;
+
+function assert(cond, msg) {
+  if (!cond)
+    throw new Error(msg || 'Assertion failed');
+}
+utils.assert = assert;
+
+utils.inherits = inherits;
+
+function sum64(buf, pos, ah, al) {
+  var bh = buf[pos];
+  var bl = buf[pos + 1];
+
+  var lo = (al + bl) >>> 0;
+  var hi = (lo < al ? 1 : 0) + ah + bh;
+  buf[pos] = hi >>> 0;
+  buf[pos + 1] = lo;
+}
+exports.sum64 = sum64;
+
+function sum64_hi(ah, al, bh, bl) {
+  var lo = (al + bl) >>> 0;
+  var hi = (lo < al ? 1 : 0) + ah + bh;
+  return hi >>> 0;
+};
+exports.sum64_hi = sum64_hi;
+
+function sum64_lo(ah, al, bh, bl) {
+  var lo = al + bl;
+  return lo >>> 0;
+};
+exports.sum64_lo = sum64_lo;
+
+function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
+  var carry = 0;
+  var lo = al;
+  lo = (lo + bl) >>> 0;
+  carry += lo < al ? 1 : 0;
+  lo = (lo + cl) >>> 0;
+  carry += lo < cl ? 1 : 0;
+  lo = (lo + dl) >>> 0;
+  carry += lo < dl ? 1 : 0;
+
+  var hi = ah + bh + ch + dh + carry;
+  return hi >>> 0;
+};
+exports.sum64_4_hi = sum64_4_hi;
+
+function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
+  var lo = al + bl + cl + dl;
+  return lo >>> 0;
+};
+exports.sum64_4_lo = sum64_4_lo;
+
+function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
+  var carry = 0;
+  var lo = al;
+  lo = (lo + bl) >>> 0;
+  carry += lo < al ? 1 : 0;
+  lo = (lo + cl) >>> 0;
+  carry += lo < cl ? 1 : 0;
+  lo = (lo + dl) >>> 0;
+  carry += lo < dl ? 1 : 0;
+  lo = (lo + el) >>> 0;
+  carry += lo < el ? 1 : 0;
+
+  var hi = ah + bh + ch + dh + eh + carry;
+  return hi >>> 0;
+};
+exports.sum64_5_hi = sum64_5_hi;
+
+function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
+  var lo = al + bl + cl + dl + el;
+
+  return lo >>> 0;
+};
+exports.sum64_5_lo = sum64_5_lo;
+
+function rotr64_hi(ah, al, num) {
+  var r = (al << (32 - num)) | (ah >>> num);
+  return r >>> 0;
+};
+exports.rotr64_hi = rotr64_hi;
+
+function rotr64_lo(ah, al, num) {
+  var r = (ah << (32 - num)) | (al >>> num);
+  return r >>> 0;
+};
+exports.rotr64_lo = rotr64_lo;
+
+function shr64_hi(ah, al, num) {
+  return ah >>> num;
+};
+exports.shr64_hi = shr64_hi;
+
+function shr64_lo(ah, al, num) {
+  var r = (ah << (32 - num)) | (al >>> num);
+  return r >>> 0;
+};
+exports.shr64_lo = shr64_lo;
+
+},{"inherits":63}],63:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],64:[function(require,module,exports){
+/**
+ * Returns a `Boolean` on whether or not the a `String` starts with '0x'
+ * @param {String} str the string input value
+ * @return {Boolean} a boolean if it is or is not hex prefixed
+ * @throws if the str input is not a string
+ */
+module.exports = function isHexPrefixed(str) {
+  if (typeof str !== 'string') {
+    throw new Error("[is-hex-prefixed] value must be type 'string', is currently type " + (typeof str) + ", while checking isHexPrefixed.");
+  }
+
+  return str.slice(0, 2) === '0x';
+}
+
+},{}],65:[function(require,module,exports){
+'use strict'
+module.exports = require('./lib/api')(require('./lib/keccak'))
+
+},{"./lib/api":66,"./lib/keccak":70}],66:[function(require,module,exports){
+'use strict'
+var createKeccak = require('./keccak')
+var createShake = require('./shake')
+
+module.exports = function (KeccakState) {
+  var Keccak = createKeccak(KeccakState)
+  var Shake = createShake(KeccakState)
+
+  return function (algorithm, options) {
+    var hash = typeof algorithm === 'string' ? algorithm.toLowerCase() : algorithm
+    switch (hash) {
+      case 'keccak224': return new Keccak(1152, 448, null, 224, options)
+      case 'keccak256': return new Keccak(1088, 512, null, 256, options)
+      case 'keccak384': return new Keccak(832, 768, null, 384, options)
+      case 'keccak512': return new Keccak(576, 1024, null, 512, options)
+
+      case 'sha3-224': return new Keccak(1152, 448, 0x06, 224, options)
+      case 'sha3-256': return new Keccak(1088, 512, 0x06, 256, options)
+      case 'sha3-384': return new Keccak(832, 768, 0x06, 384, options)
+      case 'sha3-512': return new Keccak(576, 1024, 0x06, 512, options)
+
+      case 'shake128': return new Shake(1344, 256, 0x1f, options)
+      case 'shake256': return new Shake(1088, 512, 0x1f, options)
+
+      default: throw new Error('Invald algorithm: ' + algorithm)
+    }
+  }
+}
+
+},{"./keccak":67,"./shake":68}],67:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var Transform = require('stream').Transform
+var inherits = require('inherits')
+
+module.exports = function (KeccakState) {
+  function Keccak (rate, capacity, delimitedSuffix, hashBitLength, options) {
+    Transform.call(this, options)
+
+    this._rate = rate
+    this._capacity = capacity
+    this._delimitedSuffix = delimitedSuffix
+    this._hashBitLength = hashBitLength
+    this._options = options
+
+    this._state = new KeccakState()
+    this._state.initialize(rate, capacity)
+    this._finalized = false
+  }
+
+  inherits(Keccak, Transform)
+
+  Keccak.prototype._transform = function (chunk, encoding, callback) {
+    var error = null
+    try {
+      this.update(chunk, encoding)
+    } catch (err) {
+      error = err
+    }
+
+    callback(error)
+  }
+
+  Keccak.prototype._flush = function (callback) {
+    var error = null
+    try {
+      this.push(this.digest())
+    } catch (err) {
+      error = err
+    }
+
+    callback(error)
+  }
+
+  Keccak.prototype.update = function (data, encoding) {
+    if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
+    if (this._finalized) throw new Error('Digest already called')
+    if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
+
+    this._state.absorb(data)
+
+    return this
+  }
+
+  Keccak.prototype.digest = function (encoding) {
+    if (this._finalized) throw new Error('Digest already called')
+    this._finalized = true
+
+    if (this._delimitedSuffix) this._state.absorbLastFewBits(this._delimitedSuffix)
+    var digest = this._state.squeeze(this._hashBitLength / 8)
+    if (encoding !== undefined) digest = digest.toString(encoding)
+
+    this._resetState()
+
+    return digest
+  }
+
+  // remove result from memory
+  Keccak.prototype._resetState = function () {
+    this._state.initialize(this._rate, this._capacity)
+    return this
+  }
+
+  // because sometimes we need hash right now and little later
+  Keccak.prototype._clone = function () {
+    var clone = new Keccak(this._rate, this._capacity, this._delimitedSuffix, this._hashBitLength, this._options)
+    this._state.copy(clone._state)
+    clone._finalized = this._finalized
+
+    return clone
+  }
+
+  return Keccak
+}
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"inherits":63,"stream":25}],68:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var Transform = require('stream').Transform
+var inherits = require('inherits')
+
+module.exports = function (KeccakState) {
+  function Shake (rate, capacity, delimitedSuffix, options) {
+    Transform.call(this, options)
+
+    this._rate = rate
+    this._capacity = capacity
+    this._delimitedSuffix = delimitedSuffix
+    this._options = options
+
+    this._state = new KeccakState()
+    this._state.initialize(rate, capacity)
+    this._finalized = false
+  }
+
+  inherits(Shake, Transform)
+
+  Shake.prototype._transform = function (chunk, encoding, callback) {
+    var error = null
+    try {
+      this.update(chunk, encoding)
+    } catch (err) {
+      error = err
+    }
+
+    callback(error)
+  }
+
+  Shake.prototype._flush = function () {}
+
+  Shake.prototype._read = function (size) {
+    this.push(this.squeeze(size))
+  }
+
+  Shake.prototype.update = function (data, encoding) {
+    if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
+    if (this._finalized) throw new Error('Squeeze already called')
+    if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
+
+    this._state.absorb(data)
+
+    return this
+  }
+
+  Shake.prototype.squeeze = function (dataByteLength, encoding) {
+    if (!this._finalized) {
+      this._finalized = true
+      this._state.absorbLastFewBits(this._delimitedSuffix)
+    }
+
+    var data = this._state.squeeze(dataByteLength)
+    if (encoding !== undefined) data = data.toString(encoding)
+
+    return data
+  }
+
+  Shake.prototype._resetState = function () {
+    this._state.initialize(this._rate, this._capacity)
+    return this
+  }
+
+  Shake.prototype._clone = function () {
+    var clone = new Shake(this._rate, this._capacity, this._delimitedSuffix, this._options)
+    this._state.copy(clone._state)
+    clone._finalized = this._finalized
+
+    return clone
+  }
+
+  return Shake
+}
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"inherits":63,"stream":25}],69:[function(require,module,exports){
+'use strict'
+var P1600_ROUND_CONSTANTS = [1, 0, 32898, 0, 32906, 2147483648, 2147516416, 2147483648, 32907, 0, 2147483649, 0, 2147516545, 2147483648, 32777, 2147483648, 138, 0, 136, 0, 2147516425, 0, 2147483658, 0, 2147516555, 0, 139, 2147483648, 32905, 2147483648, 32771, 2147483648, 32770, 2147483648, 128, 2147483648, 32778, 0, 2147483658, 2147483648, 2147516545, 2147483648, 32896, 2147483648, 2147483649, 0, 2147516424, 2147483648]
+
+exports.p1600 = function (s) {
+  for (var round = 0; round < 24; ++round) {
+    // theta
+    var lo0 = s[0] ^ s[10] ^ s[20] ^ s[30] ^ s[40]
+    var hi0 = s[1] ^ s[11] ^ s[21] ^ s[31] ^ s[41]
+    var lo1 = s[2] ^ s[12] ^ s[22] ^ s[32] ^ s[42]
+    var hi1 = s[3] ^ s[13] ^ s[23] ^ s[33] ^ s[43]
+    var lo2 = s[4] ^ s[14] ^ s[24] ^ s[34] ^ s[44]
+    var hi2 = s[5] ^ s[15] ^ s[25] ^ s[35] ^ s[45]
+    var lo3 = s[6] ^ s[16] ^ s[26] ^ s[36] ^ s[46]
+    var hi3 = s[7] ^ s[17] ^ s[27] ^ s[37] ^ s[47]
+    var lo4 = s[8] ^ s[18] ^ s[28] ^ s[38] ^ s[48]
+    var hi4 = s[9] ^ s[19] ^ s[29] ^ s[39] ^ s[49]
+
+    var lo = lo4 ^ (lo1 << 1 | hi1 >>> 31)
+    var hi = hi4 ^ (hi1 << 1 | lo1 >>> 31)
+    var t1slo0 = s[0] ^ lo
+    var t1shi0 = s[1] ^ hi
+    var t1slo5 = s[10] ^ lo
+    var t1shi5 = s[11] ^ hi
+    var t1slo10 = s[20] ^ lo
+    var t1shi10 = s[21] ^ hi
+    var t1slo15 = s[30] ^ lo
+    var t1shi15 = s[31] ^ hi
+    var t1slo20 = s[40] ^ lo
+    var t1shi20 = s[41] ^ hi
+    lo = lo0 ^ (lo2 << 1 | hi2 >>> 31)
+    hi = hi0 ^ (hi2 << 1 | lo2 >>> 31)
+    var t1slo1 = s[2] ^ lo
+    var t1shi1 = s[3] ^ hi
+    var t1slo6 = s[12] ^ lo
+    var t1shi6 = s[13] ^ hi
+    var t1slo11 = s[22] ^ lo
+    var t1shi11 = s[23] ^ hi
+    var t1slo16 = s[32] ^ lo
+    var t1shi16 = s[33] ^ hi
+    var t1slo21 = s[42] ^ lo
+    var t1shi21 = s[43] ^ hi
+    lo = lo1 ^ (lo3 << 1 | hi3 >>> 31)
+    hi = hi1 ^ (hi3 << 1 | lo3 >>> 31)
+    var t1slo2 = s[4] ^ lo
+    var t1shi2 = s[5] ^ hi
+    var t1slo7 = s[14] ^ lo
+    var t1shi7 = s[15] ^ hi
+    var t1slo12 = s[24] ^ lo
+    var t1shi12 = s[25] ^ hi
+    var t1slo17 = s[34] ^ lo
+    var t1shi17 = s[35] ^ hi
+    var t1slo22 = s[44] ^ lo
+    var t1shi22 = s[45] ^ hi
+    lo = lo2 ^ (lo4 << 1 | hi4 >>> 31)
+    hi = hi2 ^ (hi4 << 1 | lo4 >>> 31)
+    var t1slo3 = s[6] ^ lo
+    var t1shi3 = s[7] ^ hi
+    var t1slo8 = s[16] ^ lo
+    var t1shi8 = s[17] ^ hi
+    var t1slo13 = s[26] ^ lo
+    var t1shi13 = s[27] ^ hi
+    var t1slo18 = s[36] ^ lo
+    var t1shi18 = s[37] ^ hi
+    var t1slo23 = s[46] ^ lo
+    var t1shi23 = s[47] ^ hi
+    lo = lo3 ^ (lo0 << 1 | hi0 >>> 31)
+    hi = hi3 ^ (hi0 << 1 | lo0 >>> 31)
+    var t1slo4 = s[8] ^ lo
+    var t1shi4 = s[9] ^ hi
+    var t1slo9 = s[18] ^ lo
+    var t1shi9 = s[19] ^ hi
+    var t1slo14 = s[28] ^ lo
+    var t1shi14 = s[29] ^ hi
+    var t1slo19 = s[38] ^ lo
+    var t1shi19 = s[39] ^ hi
+    var t1slo24 = s[48] ^ lo
+    var t1shi24 = s[49] ^ hi
+
+    // rho & pi
+    var t2slo0 = t1slo0
+    var t2shi0 = t1shi0
+    var t2slo16 = (t1shi5 << 4 | t1slo5 >>> 28)
+    var t2shi16 = (t1slo5 << 4 | t1shi5 >>> 28)
+    var t2slo7 = (t1slo10 << 3 | t1shi10 >>> 29)
+    var t2shi7 = (t1shi10 << 3 | t1slo10 >>> 29)
+    var t2slo23 = (t1shi15 << 9 | t1slo15 >>> 23)
+    var t2shi23 = (t1slo15 << 9 | t1shi15 >>> 23)
+    var t2slo14 = (t1slo20 << 18 | t1shi20 >>> 14)
+    var t2shi14 = (t1shi20 << 18 | t1slo20 >>> 14)
+    var t2slo10 = (t1slo1 << 1 | t1shi1 >>> 31)
+    var t2shi10 = (t1shi1 << 1 | t1slo1 >>> 31)
+    var t2slo1 = (t1shi6 << 12 | t1slo6 >>> 20)
+    var t2shi1 = (t1slo6 << 12 | t1shi6 >>> 20)
+    var t2slo17 = (t1slo11 << 10 | t1shi11 >>> 22)
+    var t2shi17 = (t1shi11 << 10 | t1slo11 >>> 22)
+    var t2slo8 = (t1shi16 << 13 | t1slo16 >>> 19)
+    var t2shi8 = (t1slo16 << 13 | t1shi16 >>> 19)
+    var t2slo24 = (t1slo21 << 2 | t1shi21 >>> 30)
+    var t2shi24 = (t1shi21 << 2 | t1slo21 >>> 30)
+    var t2slo20 = (t1shi2 << 30 | t1slo2 >>> 2)
+    var t2shi20 = (t1slo2 << 30 | t1shi2 >>> 2)
+    var t2slo11 = (t1slo7 << 6 | t1shi7 >>> 26)
+    var t2shi11 = (t1shi7 << 6 | t1slo7 >>> 26)
+    var t2slo2 = (t1shi12 << 11 | t1slo12 >>> 21)
+    var t2shi2 = (t1slo12 << 11 | t1shi12 >>> 21)
+    var t2slo18 = (t1slo17 << 15 | t1shi17 >>> 17)
+    var t2shi18 = (t1shi17 << 15 | t1slo17 >>> 17)
+    var t2slo9 = (t1shi22 << 29 | t1slo22 >>> 3)
+    var t2shi9 = (t1slo22 << 29 | t1shi22 >>> 3)
+    var t2slo5 = (t1slo3 << 28 | t1shi3 >>> 4)
+    var t2shi5 = (t1shi3 << 28 | t1slo3 >>> 4)
+    var t2slo21 = (t1shi8 << 23 | t1slo8 >>> 9)
+    var t2shi21 = (t1slo8 << 23 | t1shi8 >>> 9)
+    var t2slo12 = (t1slo13 << 25 | t1shi13 >>> 7)
+    var t2shi12 = (t1shi13 << 25 | t1slo13 >>> 7)
+    var t2slo3 = (t1slo18 << 21 | t1shi18 >>> 11)
+    var t2shi3 = (t1shi18 << 21 | t1slo18 >>> 11)
+    var t2slo19 = (t1shi23 << 24 | t1slo23 >>> 8)
+    var t2shi19 = (t1slo23 << 24 | t1shi23 >>> 8)
+    var t2slo15 = (t1slo4 << 27 | t1shi4 >>> 5)
+    var t2shi15 = (t1shi4 << 27 | t1slo4 >>> 5)
+    var t2slo6 = (t1slo9 << 20 | t1shi9 >>> 12)
+    var t2shi6 = (t1shi9 << 20 | t1slo9 >>> 12)
+    var t2slo22 = (t1shi14 << 7 | t1slo14 >>> 25)
+    var t2shi22 = (t1slo14 << 7 | t1shi14 >>> 25)
+    var t2slo13 = (t1slo19 << 8 | t1shi19 >>> 24)
+    var t2shi13 = (t1shi19 << 8 | t1slo19 >>> 24)
+    var t2slo4 = (t1slo24 << 14 | t1shi24 >>> 18)
+    var t2shi4 = (t1shi24 << 14 | t1slo24 >>> 18)
+
+    // chi
+    s[0] = t2slo0 ^ (~t2slo1 & t2slo2)
+    s[1] = t2shi0 ^ (~t2shi1 & t2shi2)
+    s[10] = t2slo5 ^ (~t2slo6 & t2slo7)
+    s[11] = t2shi5 ^ (~t2shi6 & t2shi7)
+    s[20] = t2slo10 ^ (~t2slo11 & t2slo12)
+    s[21] = t2shi10 ^ (~t2shi11 & t2shi12)
+    s[30] = t2slo15 ^ (~t2slo16 & t2slo17)
+    s[31] = t2shi15 ^ (~t2shi16 & t2shi17)
+    s[40] = t2slo20 ^ (~t2slo21 & t2slo22)
+    s[41] = t2shi20 ^ (~t2shi21 & t2shi22)
+    s[2] = t2slo1 ^ (~t2slo2 & t2slo3)
+    s[3] = t2shi1 ^ (~t2shi2 & t2shi3)
+    s[12] = t2slo6 ^ (~t2slo7 & t2slo8)
+    s[13] = t2shi6 ^ (~t2shi7 & t2shi8)
+    s[22] = t2slo11 ^ (~t2slo12 & t2slo13)
+    s[23] = t2shi11 ^ (~t2shi12 & t2shi13)
+    s[32] = t2slo16 ^ (~t2slo17 & t2slo18)
+    s[33] = t2shi16 ^ (~t2shi17 & t2shi18)
+    s[42] = t2slo21 ^ (~t2slo22 & t2slo23)
+    s[43] = t2shi21 ^ (~t2shi22 & t2shi23)
+    s[4] = t2slo2 ^ (~t2slo3 & t2slo4)
+    s[5] = t2shi2 ^ (~t2shi3 & t2shi4)
+    s[14] = t2slo7 ^ (~t2slo8 & t2slo9)
+    s[15] = t2shi7 ^ (~t2shi8 & t2shi9)
+    s[24] = t2slo12 ^ (~t2slo13 & t2slo14)
+    s[25] = t2shi12 ^ (~t2shi13 & t2shi14)
+    s[34] = t2slo17 ^ (~t2slo18 & t2slo19)
+    s[35] = t2shi17 ^ (~t2shi18 & t2shi19)
+    s[44] = t2slo22 ^ (~t2slo23 & t2slo24)
+    s[45] = t2shi22 ^ (~t2shi23 & t2shi24)
+    s[6] = t2slo3 ^ (~t2slo4 & t2slo0)
+    s[7] = t2shi3 ^ (~t2shi4 & t2shi0)
+    s[16] = t2slo8 ^ (~t2slo9 & t2slo5)
+    s[17] = t2shi8 ^ (~t2shi9 & t2shi5)
+    s[26] = t2slo13 ^ (~t2slo14 & t2slo10)
+    s[27] = t2shi13 ^ (~t2shi14 & t2shi10)
+    s[36] = t2slo18 ^ (~t2slo19 & t2slo15)
+    s[37] = t2shi18 ^ (~t2shi19 & t2shi15)
+    s[46] = t2slo23 ^ (~t2slo24 & t2slo20)
+    s[47] = t2shi23 ^ (~t2shi24 & t2shi20)
+    s[8] = t2slo4 ^ (~t2slo0 & t2slo1)
+    s[9] = t2shi4 ^ (~t2shi0 & t2shi1)
+    s[18] = t2slo9 ^ (~t2slo5 & t2slo6)
+    s[19] = t2shi9 ^ (~t2shi5 & t2shi6)
+    s[28] = t2slo14 ^ (~t2slo10 & t2slo11)
+    s[29] = t2shi14 ^ (~t2shi10 & t2shi11)
+    s[38] = t2slo19 ^ (~t2slo15 & t2slo16)
+    s[39] = t2shi19 ^ (~t2shi15 & t2shi16)
+    s[48] = t2slo24 ^ (~t2slo20 & t2slo21)
+    s[49] = t2shi24 ^ (~t2shi20 & t2shi21)
+
+    // iota
+    s[0] ^= P1600_ROUND_CONSTANTS[round * 2]
+    s[1] ^= P1600_ROUND_CONSTANTS[round * 2 + 1]
+  }
+}
+
+},{}],70:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var keccakState = require('./keccak-state-unroll')
+
+function Keccak () {
+  // much faster than `new Array(50)`
+  this.state = [
+    0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0
+  ]
+
+  this.blockSize = null
+  this.count = 0
+  this.squeezing = false
+}
+
+Keccak.prototype.initialize = function (rate, capacity) {
+  for (var i = 0; i < 50; ++i) this.state[i] = 0
+  this.blockSize = rate / 8
+  this.count = 0
+  this.squeezing = false
+}
+
+Keccak.prototype.absorb = function (data) {
+  for (var i = 0; i < data.length; ++i) {
+    this.state[~~(this.count / 4)] ^= data[i] << (8 * (this.count % 4))
+    this.count += 1
+    if (this.count === this.blockSize) {
+      keccakState.p1600(this.state)
+      this.count = 0
+    }
+  }
+}
+
+Keccak.prototype.absorbLastFewBits = function (bits) {
+  this.state[~~(this.count / 4)] ^= bits << (8 * (this.count % 4))
+  if ((bits & 0x80) !== 0 && this.count === (this.blockSize - 1)) keccakState.p1600(this.state)
+  this.state[~~((this.blockSize - 1) / 4)] ^= 0x80 << (8 * ((this.blockSize - 1) % 4))
+  keccakState.p1600(this.state)
+  this.count = 0
+  this.squeezing = true
+}
+
+Keccak.prototype.squeeze = function (length) {
+  if (!this.squeezing) this.absorbLastFewBits(0x01)
+
+  var output = Buffer.allocUnsafe(length)
+  for (var i = 0; i < length; ++i) {
+    output[i] = (this.state[~~(this.count / 4)] >>> (8 * (this.count % 4))) & 0xff
+    this.count += 1
+    if (this.count === this.blockSize) {
+      keccakState.p1600(this.state)
+      this.count = 0
+    }
+  }
+
+  return output
+}
+
+Keccak.prototype.copy = function (dest) {
+  for (var i = 0; i < 50; ++i) dest.state[i] = this.state[i]
+  dest.blockSize = this.blockSize
+  dest.count = this.count
+  dest.squeezing = this.squeezing
+}
+
+module.exports = Keccak
+
+}).call(this,require("buffer").Buffer)
+},{"./keccak-state-unroll":69,"buffer":5}],71:[function(require,module,exports){
+(function (Buffer){
+/*
+CryptoJS v3.1.2
+code.google.com/p/crypto-js
+(c) 2009-2013 by Jeff Mott. All rights reserved.
+code.google.com/p/crypto-js/wiki/License
+*/
+/** @preserve
+(c) 2012 by Cédric Mesnil. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+    - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+    - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+// constants table
+var zl = [
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
+  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
+  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
+  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+]
+
+var zr = [
+  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
+  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
+  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
+  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
+  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+]
+
+var sl = [
+  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
+  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
+  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
+  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
+  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+]
+
+var sr = [
+  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
+  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
+  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
+  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
+  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+]
+
+var hl = [0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E]
+var hr = [0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000]
+
+function bytesToWords (bytes) {
+  var words = []
+  for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
+    words[b >>> 5] |= bytes[i] << (24 - b % 32)
+  }
+  return words
+}
+
+function wordsToBytes (words) {
+  var bytes = []
+  for (var b = 0; b < words.length * 32; b += 8) {
+    bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF)
+  }
+  return bytes
+}
+
+function processBlock (H, M, offset) {
+  // swap endian
+  for (var i = 0; i < 16; i++) {
+    var offset_i = offset + i
+    var M_offset_i = M[offset_i]
+
+    // Swap
+    M[offset_i] = (
+      (((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
+      (((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
+    )
+  }
+
+  // Working variables
+  var al, bl, cl, dl, el
+  var ar, br, cr, dr, er
+
+  ar = al = H[0]
+  br = bl = H[1]
+  cr = cl = H[2]
+  dr = dl = H[3]
+  er = el = H[4]
+
+  // computation
+  var t
+  for (i = 0; i < 80; i += 1) {
+    t = (al + M[offset + zl[i]]) | 0
+    if (i < 16) {
+      t += f1(bl, cl, dl) + hl[0]
+    } else if (i < 32) {
+      t += f2(bl, cl, dl) + hl[1]
+    } else if (i < 48) {
+      t += f3(bl, cl, dl) + hl[2]
+    } else if (i < 64) {
+      t += f4(bl, cl, dl) + hl[3]
+    } else {// if (i<80) {
+      t += f5(bl, cl, dl) + hl[4]
+    }
+    t = t | 0
+    t = rotl(t, sl[i])
+    t = (t + el) | 0
+    al = el
+    el = dl
+    dl = rotl(cl, 10)
+    cl = bl
+    bl = t
+
+    t = (ar + M[offset + zr[i]]) | 0
+    if (i < 16) {
+      t += f5(br, cr, dr) + hr[0]
+    } else if (i < 32) {
+      t += f4(br, cr, dr) + hr[1]
+    } else if (i < 48) {
+      t += f3(br, cr, dr) + hr[2]
+    } else if (i < 64) {
+      t += f2(br, cr, dr) + hr[3]
+    } else {// if (i<80) {
+      t += f1(br, cr, dr) + hr[4]
+    }
+
+    t = t | 0
+    t = rotl(t, sr[i])
+    t = (t + er) | 0
+    ar = er
+    er = dr
+    dr = rotl(cr, 10)
+    cr = br
+    br = t
+  }
+
+  // intermediate hash value
+  t = (H[1] + cl + dr) | 0
+  H[1] = (H[2] + dl + er) | 0
+  H[2] = (H[3] + el + ar) | 0
+  H[3] = (H[4] + al + br) | 0
+  H[4] = (H[0] + bl + cr) | 0
+  H[0] = t
+}
+
+function f1 (x, y, z) {
+  return ((x) ^ (y) ^ (z))
+}
+
+function f2 (x, y, z) {
+  return (((x) & (y)) | ((~x) & (z)))
+}
+
+function f3 (x, y, z) {
+  return (((x) | (~(y))) ^ (z))
+}
+
+function f4 (x, y, z) {
+  return (((x) & (z)) | ((y) & (~(z))))
+}
+
+function f5 (x, y, z) {
+  return ((x) ^ ((y) | (~(z))))
+}
+
+function rotl (x, n) {
+  return (x << n) | (x >>> (32 - n))
+}
+
+function ripemd160 (message) {
+  var H = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]
+
+  if (typeof message === 'string') {
+    message = new Buffer(message, 'utf8')
+  }
+
+  var m = bytesToWords(message)
+
+  var nBitsLeft = message.length * 8
+  var nBitsTotal = message.length * 8
+
+  // Add padding
+  m[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32)
+  m[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
+    (((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff) |
+    (((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00)
+  )
+
+  for (var i = 0; i < m.length; i += 16) {
+    processBlock(H, m, i)
+  }
+
+  // swap endian
+  for (i = 0; i < 5; i++) {
+    // shortcut
+    var H_i = H[i]
+
+    // Swap
+    H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
+      (((H_i << 24) | (H_i >>> 8)) & 0xff00ff00)
+  }
+
+  var digestbytes = wordsToBytes(H)
+  return new Buffer(digestbytes)
+}
+
+module.exports = ripemd160
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":5}],72:[function(require,module,exports){
+(function (Buffer){
+const assert = require('assert')
+/**
+ * RLP Encoding based on: https://github.com/ethereum/wiki/wiki/%5BEnglish%5D-RLP
+ * This function takes in a data, convert it to buffer if not, and a length for recursion
+ *
+ * @param {Buffer,String,Integer,Array} data - will be converted to buffer
+ * @returns {Buffer} - returns buffer of encoded data
+ **/
+exports.encode = function (input) {
+  if (input instanceof Array) {
+    var output = []
+    for (var i = 0; i < input.length; i++) {
+      output.push(exports.encode(input[i]))
+    }
+    var buf = Buffer.concat(output)
+    return Buffer.concat([encodeLength(buf.length, 192), buf])
+  } else {
+    input = toBuffer(input)
+    if (input.length === 1 && input[0] < 128) {
+      return input
+    } else {
+      return Buffer.concat([encodeLength(input.length, 128), input])
+    }
+  }
+}
+
+function safeParseInt (v, base) {
+  if (v.slice(0, 2) === '00') {
+    throw (new Error('invalid RLP: extra zeros'))
+  }
+
+  return parseInt(v, base)
+}
+
+function encodeLength (len, offset) {
+  if (len < 56) {
+    return new Buffer([len + offset])
+  } else {
+    var hexLength = intToHex(len)
+    var lLength = hexLength.length / 2
+    var firstByte = intToHex(offset + 55 + lLength)
+    return new Buffer(firstByte + hexLength, 'hex')
+  }
+}
+
+/**
+ * RLP Decoding based on: {@link https://github.com/ethereum/wiki/wiki/%5BEnglish%5D-RLP|RLP}
+ * @param {Buffer,String,Integer,Array} data - will be converted to buffer
+ * @returns {Array} - returns decode Array of Buffers containg the original message
+ **/
+exports.decode = function (input, stream) {
+  if (!input || input.length === 0) {
+    return new Buffer([])
+  }
+
+  input = toBuffer(input)
+  var decoded = _decode(input)
+
+  if (stream) {
+    return decoded
+  }
+
+  assert.equal(decoded.remainder.length, 0, 'invalid remainder')
+  return decoded.data
+}
+
+exports.getLength = function (input) {
+  if (!input || input.length === 0) {
+    return new Buffer([])
+  }
+
+  input = toBuffer(input)
+  var firstByte = input[0]
+  if (firstByte <= 0x7f) {
+    return input.length
+  } else if (firstByte <= 0xb7) {
+    return firstByte - 0x7f
+  } else if (firstByte <= 0xbf) {
+    return firstByte - 0xb6
+  } else if (firstByte <= 0xf7) {
+    // a list between  0-55 bytes long
+    return firstByte - 0xbf
+  } else {
+    // a list  over 55 bytes long
+    var llength = firstByte - 0xf6
+    var length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
+    return llength + length
+  }
+}
+
+function _decode (input) {
+  var length, llength, data, innerRemainder, d
+  var decoded = []
+  var firstByte = input[0]
+
+  if (firstByte <= 0x7f) {
+    // a single byte whose value is in the [0x00, 0x7f] range, that byte is its own RLP encoding.
+    return {
+      data: input.slice(0, 1),
+      remainder: input.slice(1)
+    }
+  } else if (firstByte <= 0xb7) {
+    // string is 0-55 bytes long. A single byte with value 0x80 plus the length of the string followed by the string
+    // The range of the first byte is [0x80, 0xb7]
+    length = firstByte - 0x7f
+
+    // set 0x80 null to 0
+    if (firstByte === 0x80) {
+      data = new Buffer([])
+    } else {
+      data = input.slice(1, length)
+    }
+
+    if (length === 2 && data[0] < 0x80) {
+      throw new Error('invalid rlp encoding: byte must be less 0x80')
+    }
+
+    return {
+      data: data,
+      remainder: input.slice(length)
+    }
+  } else if (firstByte <= 0xbf) {
+    llength = firstByte - 0xb6
+    length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
+    data = input.slice(llength, length + llength)
+    if (data.length < length) {
+      throw (new Error('invalid RLP'))
+    }
+
+    return {
+      data: data,
+      remainder: input.slice(length + llength)
+    }
+  } else if (firstByte <= 0xf7) {
+    // a list between  0-55 bytes long
+    length = firstByte - 0xbf
+    innerRemainder = input.slice(1, length)
+    while (innerRemainder.length) {
+      d = _decode(innerRemainder)
+      decoded.push(d.data)
+      innerRemainder = d.remainder
+    }
+
+    return {
+      data: decoded,
+      remainder: input.slice(length)
+    }
+  } else {
+    // a list  over 55 bytes long
+    llength = firstByte - 0xf6
+    length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
+    var totalLength = llength + length
+    if (totalLength > input.length) {
+      throw new Error('invalid rlp: total length is larger than the data')
+    }
+
+    innerRemainder = input.slice(llength, totalLength)
+    if (innerRemainder.length === 0) {
+      throw new Error('invalid rlp, List has a invalid length')
+    }
+
+    while (innerRemainder.length) {
+      d = _decode(innerRemainder)
+      decoded.push(d.data)
+      innerRemainder = d.remainder
+    }
+    return {
+      data: decoded,
+      remainder: input.slice(totalLength)
+    }
+  }
+}
+
+function isHexPrefixed (str) {
+  return str.slice(0, 2) === '0x'
+}
+
+// Removes 0x from a given String
+function stripHexPrefix (str) {
+  if (typeof str !== 'string') {
+    return str
+  }
+  return isHexPrefixed(str) ? str.slice(2) : str
+}
+
+function intToHex (i) {
+  var hex = i.toString(16)
+  if (hex.length % 2) {
+    hex = '0' + hex
+  }
+
+  return hex
+}
+
+function padToEven (a) {
+  if (a.length % 2) a = '0' + a
+  return a
+}
+
+function intToBuffer (i) {
+  var hex = intToHex(i)
+  return new Buffer(hex, 'hex')
+}
+
+function toBuffer (v) {
+  if (!Buffer.isBuffer(v)) {
+    if (typeof v === 'string') {
+      if (isHexPrefixed(v)) {
+        v = new Buffer(padToEven(stripHexPrefix(v)), 'hex')
+      } else {
+        v = new Buffer(v)
+      }
+    } else if (typeof v === 'number') {
+      if (!v) {
+        v = new Buffer([])
+      } else {
+        v = intToBuffer(v)
+      }
+    } else if (v === null || v === undefined) {
+      v = new Buffer([])
+    } else if (v.toArray) {
+      // converts a BN to a Buffer
+      v = new Buffer(v.toArray())
+    } else {
+      throw new Error('invalid type')
+    }
+  }
+  return v
+}
+
+}).call(this,require("buffer").Buffer)
+},{"assert":1,"buffer":5}],73:[function(require,module,exports){
+'use strict'
+module.exports = require('./lib')(require('./lib/elliptic'))
+
+},{"./lib":77,"./lib/elliptic":76}],74:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var toString = Object.prototype.toString
+
+// TypeError
+exports.isArray = function (value, message) {
+  if (!Array.isArray(value)) throw TypeError(message)
+}
+
+exports.isBoolean = function (value, message) {
+  if (toString.call(value) !== '[object Boolean]') throw TypeError(message)
+}
+
+exports.isBuffer = function (value, message) {
+  if (!Buffer.isBuffer(value)) throw TypeError(message)
+}
+
+exports.isFunction = function (value, message) {
+  if (toString.call(value) !== '[object Function]') throw TypeError(message)
+}
+
+exports.isNumber = function (value, message) {
+  if (toString.call(value) !== '[object Number]') throw TypeError(message)
+}
+
+exports.isObject = function (value, message) {
+  if (toString.call(value) !== '[object Object]') throw TypeError(message)
+}
+
+// RangeError
+exports.isBufferLength = function (buffer, length, message) {
+  if (buffer.length !== length) throw RangeError(message)
+}
+
+exports.isBufferLength2 = function (buffer, length1, length2, message) {
+  if (buffer.length !== length1 && buffer.length !== length2) throw RangeError(message)
+}
+
+exports.isLengthGTZero = function (value, message) {
+  if (value.length === 0) throw RangeError(message)
+}
+
+exports.isNumberInInterval = function (number, x, y, message) {
+  if (number <= x || number >= y) throw RangeError(message)
+}
+
+}).call(this,{"isBuffer":require("../../../../../.nvm/versions/node/v7.5.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
+},{"../../../../../.nvm/versions/node/v7.5.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10}],75:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var bip66 = require('bip66')
+
+var EC_PRIVKEY_EXPORT_DER_COMPRESSED = new Buffer([
+  // begin
+  0x30, 0x81, 0xd3, 0x02, 0x01, 0x01, 0x04, 0x20,
+  // private key
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  // middle
+  0xa0, 0x81, 0x85, 0x30, 0x81, 0x82, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
+  0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
+  0x21, 0x02, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
+  0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
+  0x17, 0x98, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
+  0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x24, 0x03, 0x22, 0x00,
+  // public key
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00
+])
+
+var EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED = new Buffer([
+  // begin
+  0x30, 0x82, 0x01, 0x13, 0x02, 0x01, 0x01, 0x04, 0x20,
+  // private key
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  // middle
+  0xa0, 0x81, 0xa5, 0x30, 0x81, 0xa2, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
+  0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
+  0x41, 0x04, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
+  0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
+  0x17, 0x98, 0x48, 0x3a, 0xda, 0x77, 0x26, 0xa3, 0xc4, 0x65, 0x5d, 0xa4, 0xfb, 0xfc, 0x0E, 0x11,
+  0x08, 0xa8, 0xfd, 0x17, 0xb4, 0x48, 0xa6, 0x85, 0x54, 0x19, 0x9c, 0x47, 0xd0, 0x8f, 0xfb, 0x10,
+  0xd4, 0xb8, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
+  0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x44, 0x03, 0x42, 0x00,
+  // public key
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00
+])
+
+var ZERO_BUFFER_32 = new Buffer([
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+])
+
+exports.privateKeyExport = function (privateKey, publicKey, compressed) {
+  var result = new Buffer(compressed ? EC_PRIVKEY_EXPORT_DER_COMPRESSED : EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED)
+  privateKey.copy(result, compressed ? 8 : 9)
+  publicKey.copy(result, compressed ? 181 : 214)
+  return result
+}
+
+exports.privateKeyImport = function (privateKey) {
+  var length = privateKey.length
+
+  // sequence header
+  var index = 0
+  if (length < index + 1 || privateKey[index] !== 0x30) return
+  index += 1
+
+  // sequence length constructor
+  if (length < index + 1 || !(privateKey[index] & 0x80)) return
+
+  var lenb = privateKey[index] & 0x7f
+  index += 1
+  if (lenb < 1 || lenb > 2) return
+  if (length < index + lenb) return
+
+  // sequence length
+  var len = privateKey[index + lenb - 1] | (lenb > 1 ? privateKey[index + lenb - 2] << 8 : 0)
+  index += lenb
+  if (length < index + len) return
+
+  // sequence element 0: version number (=1)
+  if (length < index + 3 ||
+      privateKey[index] !== 0x02 ||
+      privateKey[index + 1] !== 0x01 ||
+      privateKey[index + 2] !== 0x01) {
+    return
+  }
+  index += 3
+
+  // sequence element 1: octet string, up to 32 bytes
+  if (length < index + 2 ||
+      privateKey[index] !== 0x04 ||
+      privateKey[index + 1] > 0x20 ||
+      length < index + 2 + privateKey[index + 1]) {
+    return
+  }
+
+  return privateKey.slice(index + 2, index + 2 + privateKey[index + 1])
+}
+
+exports.signatureExport = function (sigObj) {
+  var r = Buffer.concat([new Buffer([0]), sigObj.r])
+  for (var lenR = 33, posR = 0; lenR > 1 && r[posR] === 0x00 && !(r[posR + 1] & 0x80); --lenR, ++posR);
+
+  var s = Buffer.concat([new Buffer([0]), sigObj.s])
+  for (var lenS = 33, posS = 0; lenS > 1 && s[posS] === 0x00 && !(s[posS + 1] & 0x80); --lenS, ++posS);
+
+  return bip66.encode(r.slice(posR), s.slice(posS))
+}
+
+exports.signatureImport = function (sig) {
+  var r = new Buffer(ZERO_BUFFER_32)
+  var s = new Buffer(ZERO_BUFFER_32)
+
+  try {
+    var sigObj = bip66.decode(sig)
+    if (sigObj.r.length === 33 && sigObj.r[0] === 0x00) sigObj.r = sigObj.r.slice(1)
+    if (sigObj.r.length > 32) throw new Error('R length is too long')
+    if (sigObj.s.length === 33 && sigObj.s[0] === 0x00) sigObj.s = sigObj.s.slice(1)
+    if (sigObj.s.length > 32) throw new Error('S length is too long')
+  } catch (err) {
+    return
+  }
+
+  sigObj.r.copy(r, 32 - sigObj.r.length)
+  sigObj.s.copy(s, 32 - sigObj.s.length)
+
+  return { r: r, s: s }
+}
+
+exports.signatureImportLax = function (sig) {
+  var r = new Buffer(ZERO_BUFFER_32)
+  var s = new Buffer(ZERO_BUFFER_32)
+
+  var length = sig.length
+  var index = 0
+
+  // sequence tag byte
+  if (sig[index++] !== 0x30) return
+
+  // sequence length byte
+  var lenbyte = sig[index++]
+  if (lenbyte & 0x80) {
+    index += lenbyte - 0x80
+    if (index > length) return
+  }
+
+  // sequence tag byte for r
+  if (sig[index++] !== 0x02) return
+
+  // length for r
+  var rlen = sig[index++]
+  if (rlen & 0x80) {
+    lenbyte = rlen - 0x80
+    if (index + lenbyte > length) return
+    for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
+    for (rlen = 0; lenbyte > 0; index += 1, lenbyte -= 1) rlen = (rlen << 8) + sig[index]
+  }
+  if (rlen > length - index) return
+  var rindex = index
+  index += rlen
+
+  // sequence tag byte for s
+  if (sig[index++] !== 0x02) return
+
+  // length for s
+  var slen = sig[index++]
+  if (slen & 0x80) {
+    lenbyte = slen - 0x80
+    if (index + lenbyte > length) return
+    for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
+    for (slen = 0; lenbyte > 0; index += 1, lenbyte -= 1) slen = (slen << 8) + sig[index]
+  }
+  if (slen > length - index) return
+  var sindex = index
+  index += slen
+
+  // ignore leading zeros in r
+  for (; rlen > 0 && sig[rindex] === 0x00; rlen -= 1, rindex += 1);
+  // copy r value
+  if (rlen > 32) return
+  var rvalue = sig.slice(rindex, rindex + rlen)
+  rvalue.copy(r, 32 - rvalue.length)
+
+  // ignore leading zeros in s
+  for (; slen > 0 && sig[sindex] === 0x00; slen -= 1, sindex += 1);
+  // copy s value
+  if (slen > 32) return
+  var svalue = sig.slice(sindex, sindex + slen)
+  svalue.copy(s, 32 - svalue.length)
+
+  return { r: r, s: s }
+}
+
+}).call(this,require("buffer").Buffer)
+},{"bip66":32,"buffer":5}],76:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var createHash = require('create-hash')
+var BN = require('bn.js')
+var EC = require('elliptic').ec
+
+var messages = require('../messages.json')
+
+var ec = new EC('secp256k1')
+var ecparams = ec.curve
+
+function loadCompressedPublicKey (first, xBuffer) {
+  var x = new BN(xBuffer)
+
+  // overflow
+  if (x.cmp(ecparams.p) >= 0) return null
+  x = x.toRed(ecparams.red)
+
+  // compute corresponding Y
+  var y = x.redSqr().redIMul(x).redIAdd(ecparams.b).redSqrt()
+  if ((first === 0x03) !== y.isOdd()) y = y.redNeg()
+
+  return ec.keyPair({ pub: { x: x, y: y } })
+}
+
+function loadUncompressedPublicKey (first, xBuffer, yBuffer) {
+  var x = new BN(xBuffer)
+  var y = new BN(yBuffer)
+
+  // overflow
+  if (x.cmp(ecparams.p) >= 0 || y.cmp(ecparams.p) >= 0) return null
+
+  x = x.toRed(ecparams.red)
+  y = y.toRed(ecparams.red)
+
+  // is odd flag
+  if ((first === 0x06 || first === 0x07) && y.isOdd() !== (first === 0x07)) return null
+
+  // x*x*x + b = y*y
+  var x3 = x.redSqr().redIMul(x)
+  if (!y.redSqr().redISub(x3.redIAdd(ecparams.b)).isZero()) return null
+
+  return ec.keyPair({ pub: { x: x, y: y } })
+}
+
+function loadPublicKey (publicKey) {
+  var first = publicKey[0]
+  switch (first) {
+    case 0x02:
+    case 0x03:
+      if (publicKey.length !== 33) return null
+      return loadCompressedPublicKey(first, publicKey.slice(1, 33))
+    case 0x04:
+    case 0x06:
+    case 0x07:
+      if (publicKey.length !== 65) return null
+      return loadUncompressedPublicKey(first, publicKey.slice(1, 33), publicKey.slice(33, 65))
+    default:
+      return null
+  }
+}
+
+exports.privateKeyVerify = function (privateKey) {
+  var bn = new BN(privateKey)
+  return bn.cmp(ecparams.n) < 0 && !bn.isZero()
+}
+
+exports.privateKeyExport = function (privateKey, compressed) {
+  var d = new BN(privateKey)
+  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.EC_PRIVATE_KEY_EXPORT_DER_FAIL)
+
+  return new Buffer(ec.keyFromPrivate(privateKey).getPublic(compressed, true))
+}
+
+exports.privateKeyTweakAdd = function (privateKey, tweak) {
+  var bn = new BN(tweak)
+  if (bn.cmp(ecparams.n) >= 0) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
+
+  bn.iadd(new BN(privateKey))
+  if (bn.cmp(ecparams.n) >= 0) bn.isub(ecparams.n)
+  if (bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
+
+  return bn.toArrayLike(Buffer, 'be', 32)
+}
+
+exports.privateKeyTweakMul = function (privateKey, tweak) {
+  var bn = new BN(tweak)
+  if (bn.cmp(ecparams.n) >= 0 || bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_MUL_FAIL)
+
+  bn.imul(new BN(privateKey))
+  if (bn.cmp(ecparams.n)) bn = bn.umod(ecparams.n)
+
+  return bn.toArrayLike(Buffer, 'be', 32)
+}
+
+exports.publicKeyCreate = function (privateKey, compressed) {
+  var d = new BN(privateKey)
+  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.EC_PUBLIC_KEY_CREATE_FAIL)
+
+  return new Buffer(ec.keyFromPrivate(privateKey).getPublic(compressed, true))
+}
+
+exports.publicKeyConvert = function (publicKey, compressed) {
+  var pair = loadPublicKey(publicKey)
+  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+
+  return new Buffer(pair.getPublic(compressed, true))
+}
+
+exports.publicKeyVerify = function (publicKey) {
+  return loadPublicKey(publicKey) !== null
+}
+
+exports.publicKeyTweakAdd = function (publicKey, tweak, compressed) {
+  var pair = loadPublicKey(publicKey)
+  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+
+  tweak = new BN(tweak)
+  if (tweak.cmp(ecparams.n) >= 0) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_ADD_FAIL)
+
+  return new Buffer(ecparams.g.mul(tweak).add(pair.pub).encode(true, compressed))
+}
+
+exports.publicKeyTweakMul = function (publicKey, tweak, compressed) {
+  var pair = loadPublicKey(publicKey)
+  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+
+  tweak = new BN(tweak)
+  if (tweak.cmp(ecparams.n) >= 0 || tweak.isZero()) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_MUL_FAIL)
+
+  return new Buffer(pair.pub.mul(tweak).encode(true, compressed))
+}
+
+exports.publicKeyCombine = function (publicKeys, compressed) {
+  var pairs = new Array(publicKeys.length)
+  for (var i = 0; i < publicKeys.length; ++i) {
+    pairs[i] = loadPublicKey(publicKeys[i])
+    if (pairs[i] === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+  }
+
+  var point = pairs[0].pub
+  for (var j = 1; j < pairs.length; ++j) point = point.add(pairs[j].pub)
+  if (point.isInfinity()) throw new Error(messages.EC_PUBLIC_KEY_COMBINE_FAIL)
+
+  return new Buffer(point.encode(true, compressed))
+}
+
+exports.signatureNormalize = function (signature) {
+  var r = new BN(signature.slice(0, 32))
+  var s = new BN(signature.slice(32, 64))
+  if (r.cmp(ecparams.n) >= 0 || s.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+
+  var result = new Buffer(signature)
+  if (s.cmp(ec.nh) === 1) ecparams.n.sub(s).toArrayLike(Buffer, 'be', 32).copy(result, 32)
+
+  return result
+}
+
+exports.signatureExport = function (signature) {
+  var r = signature.slice(0, 32)
+  var s = signature.slice(32, 64)
+  if (new BN(r).cmp(ecparams.n) >= 0 || new BN(s).cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+
+  return { r: r, s: s }
+}
+
+exports.signatureImport = function (sigObj) {
+  var r = new BN(sigObj.r)
+  if (r.cmp(ecparams.n) >= 0) r = new BN(0)
+
+  var s = new BN(sigObj.s)
+  if (s.cmp(ecparams.n) >= 0) s = new BN(0)
+
+  return Buffer.concat([
+    r.toArrayLike(Buffer, 'be', 32),
+    s.toArrayLike(Buffer, 'be', 32)
+  ])
+}
+
+exports.sign = function (message, privateKey, noncefn, data) {
+  if (typeof noncefn === 'function') {
+    var getNonce = noncefn
+    noncefn = function (counter) {
+      var nonce = getNonce(message, privateKey, null, data, counter)
+      if (!Buffer.isBuffer(nonce) || nonce.length !== 32) throw new Error(messages.ECDSA_SIGN_FAIL)
+
+      return new BN(nonce)
+    }
+  }
+
+  var d = new BN(privateKey)
+  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.ECDSA_SIGN_FAIL)
+
+  var result = ec.sign(message, privateKey, { canonical: true, k: noncefn, pers: data })
+  return {
+    signature: Buffer.concat([
+      result.r.toArrayLike(Buffer, 'be', 32),
+      result.s.toArrayLike(Buffer, 'be', 32)
+    ]),
+    recovery: result.recoveryParam
+  }
+}
+
+exports.verify = function (message, signature, publicKey) {
+  var sigObj = {r: signature.slice(0, 32), s: signature.slice(32, 64)}
+
+  var sigr = new BN(sigObj.r)
+  var sigs = new BN(sigObj.s)
+  if (sigr.cmp(ecparams.n) >= 0 || sigs.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+  if (sigs.cmp(ec.nh) === 1 || sigr.isZero() || sigs.isZero()) return false
+
+  var pair = loadPublicKey(publicKey)
+  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+
+  return ec.verify(message, sigObj, {x: pair.pub.x, y: pair.pub.y})
+}
+
+exports.recover = function (message, signature, recovery, compressed) {
+  var sigObj = {r: signature.slice(0, 32), s: signature.slice(32, 64)}
+
+  var sigr = new BN(sigObj.r)
+  var sigs = new BN(sigObj.s)
+  if (sigr.cmp(ecparams.n) >= 0 || sigs.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+
+  try {
+    if (sigr.isZero() || sigs.isZero()) throw new Error()
+
+    var point = ec.recoverPubKey(message, sigObj, recovery)
+    return new Buffer(point.encode(true, compressed))
+  } catch (err) {
+    throw new Error(messages.ECDSA_RECOVER_FAIL)
+  }
+}
+
+exports.ecdh = function (publicKey, privateKey) {
+  var shared = exports.ecdhUnsafe(publicKey, privateKey, true)
+  return createHash('sha256').update(shared).digest()
+}
+
+exports.ecdhUnsafe = function (publicKey, privateKey, compressed) {
+  var pair = loadPublicKey(publicKey)
+  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+
+  var scalar = new BN(privateKey)
+  if (scalar.cmp(ecparams.n) >= 0 || scalar.isZero()) throw new Error(messages.ECDH_FAIL)
+
+  return new Buffer(pair.pub.mul(scalar).encode(true, compressed))
+}
+
+}).call(this,require("buffer").Buffer)
+},{"../messages.json":78,"bn.js":33,"buffer":5,"create-hash":36,"elliptic":39}],77:[function(require,module,exports){
+'use strict'
+var assert = require('./assert')
+var der = require('./der')
+var messages = require('./messages.json')
+
+function initCompressedValue (value, defaultValue) {
+  if (value === undefined) return defaultValue
+
+  assert.isBoolean(value, messages.COMPRESSED_TYPE_INVALID)
+  return value
+}
+
+module.exports = function (secp256k1) {
+  return {
+    privateKeyVerify: function (privateKey) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      return privateKey.length === 32 && secp256k1.privateKeyVerify(privateKey)
+    },
+
+    privateKeyExport: function (privateKey, compressed) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+      var publicKey = secp256k1.privateKeyExport(privateKey, compressed)
+
+      return der.privateKeyExport(privateKey, publicKey, compressed)
+    },
+
+    privateKeyImport: function (privateKey) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+
+      privateKey = der.privateKeyImport(privateKey)
+      if (privateKey && privateKey.length === 32 && secp256k1.privateKeyVerify(privateKey)) return privateKey
+
+      throw new Error(messages.EC_PRIVATE_KEY_IMPORT_DER_FAIL)
+    },
+
+    privateKeyTweakAdd: function (privateKey, tweak) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
+      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+
+      return secp256k1.privateKeyTweakAdd(privateKey, tweak)
+    },
+
+    privateKeyTweakMul: function (privateKey, tweak) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
+      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+
+      return secp256k1.privateKeyTweakMul(privateKey, tweak)
+    },
+
+    publicKeyCreate: function (privateKey, compressed) {
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.publicKeyCreate(privateKey, compressed)
+    },
+
+    publicKeyConvert: function (publicKey, compressed) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.publicKeyConvert(publicKey, compressed)
+    },
+
+    publicKeyVerify: function (publicKey) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      return secp256k1.publicKeyVerify(publicKey)
+    },
+
+    publicKeyTweakAdd: function (publicKey, tweak, compressed) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
+      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.publicKeyTweakAdd(publicKey, tweak, compressed)
+    },
+
+    publicKeyTweakMul: function (publicKey, tweak, compressed) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
+      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.publicKeyTweakMul(publicKey, tweak, compressed)
+    },
+
+    publicKeyCombine: function (publicKeys, compressed) {
+      assert.isArray(publicKeys, messages.EC_PUBLIC_KEYS_TYPE_INVALID)
+      assert.isLengthGTZero(publicKeys, messages.EC_PUBLIC_KEYS_LENGTH_INVALID)
+      for (var i = 0; i < publicKeys.length; ++i) {
+        assert.isBuffer(publicKeys[i], messages.EC_PUBLIC_KEY_TYPE_INVALID)
+        assert.isBufferLength2(publicKeys[i], 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+      }
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.publicKeyCombine(publicKeys, compressed)
+    },
+
+    signatureNormalize: function (signature) {
+      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      return secp256k1.signatureNormalize(signature)
+    },
+
+    signatureExport: function (signature) {
+      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      var sigObj = secp256k1.signatureExport(signature)
+      return der.signatureExport(sigObj)
+    },
+
+    signatureImport: function (sig) {
+      assert.isBuffer(sig, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isLengthGTZero(sig, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      var sigObj = der.signatureImport(sig)
+      if (sigObj) return secp256k1.signatureImport(sigObj)
+
+      throw new Error(messages.ECDSA_SIGNATURE_PARSE_DER_FAIL)
+    },
+
+    signatureImportLax: function (sig) {
+      assert.isBuffer(sig, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isLengthGTZero(sig, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      var sigObj = der.signatureImportLax(sig)
+      if (sigObj) return secp256k1.signatureImport(sigObj)
+
+      throw new Error(messages.ECDSA_SIGNATURE_PARSE_DER_FAIL)
+    },
+
+    sign: function (message, privateKey, options) {
+      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
+      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      var data = null
+      var noncefn = null
+      if (options !== undefined) {
+        assert.isObject(options, messages.OPTIONS_TYPE_INVALID)
+
+        if (options.data !== undefined) {
+          assert.isBuffer(options.data, messages.OPTIONS_DATA_TYPE_INVALID)
+          assert.isBufferLength(options.data, 32, messages.OPTIONS_DATA_LENGTH_INVALID)
+          data = options.data
+        }
+
+        if (options.noncefn !== undefined) {
+          assert.isFunction(options.noncefn, messages.OPTIONS_NONCEFN_TYPE_INVALID)
+          noncefn = options.noncefn
+        }
+      }
+
+      return secp256k1.sign(message, privateKey, noncefn, data)
+    },
+
+    verify: function (message, signature, publicKey) {
+      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
+      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+
+      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      return secp256k1.verify(message, signature, publicKey)
+    },
+
+    recover: function (message, signature, recovery, compressed) {
+      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
+      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+
+      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
+      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+
+      assert.isNumber(recovery, messages.RECOVERY_ID_TYPE_INVALID)
+      assert.isNumberInInterval(recovery, -1, 4, messages.RECOVERY_ID_VALUE_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.recover(message, signature, recovery, compressed)
+    },
+
+    ecdh: function (publicKey, privateKey) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      return secp256k1.ecdh(publicKey, privateKey)
+    },
+
+    ecdhUnsafe: function (publicKey, privateKey, compressed) {
+      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
+      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+
+      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+
+      compressed = initCompressedValue(compressed, true)
+
+      return secp256k1.ecdhUnsafe(publicKey, privateKey, compressed)
+    }
+  }
+}
+
+},{"./assert":74,"./der":75,"./messages.json":78}],78:[function(require,module,exports){
+module.exports={
+  "COMPRESSED_TYPE_INVALID": "compressed should be a boolean",
+  "EC_PRIVATE_KEY_TYPE_INVALID": "private key should be a Buffer",
+  "EC_PRIVATE_KEY_LENGTH_INVALID": "private key length is invalid",
+  "EC_PRIVATE_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting private key is invalid",
+  "EC_PRIVATE_KEY_TWEAK_MUL_FAIL": "tweak out of range",
+  "EC_PRIVATE_KEY_EXPORT_DER_FAIL": "couldn't export to DER format",
+  "EC_PRIVATE_KEY_IMPORT_DER_FAIL": "couldn't import from DER format",
+  "EC_PUBLIC_KEYS_TYPE_INVALID": "public keys should be an Array",
+  "EC_PUBLIC_KEYS_LENGTH_INVALID": "public keys Array should have at least 1 element",
+  "EC_PUBLIC_KEY_TYPE_INVALID": "public key should be a Buffer",
+  "EC_PUBLIC_KEY_LENGTH_INVALID": "public key length is invalid",
+  "EC_PUBLIC_KEY_PARSE_FAIL": "the public key could not be parsed or is invalid",
+  "EC_PUBLIC_KEY_CREATE_FAIL": "private was invalid, try again",
+  "EC_PUBLIC_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting public key is invalid",
+  "EC_PUBLIC_KEY_TWEAK_MUL_FAIL": "tweak out of range",
+  "EC_PUBLIC_KEY_COMBINE_FAIL": "the sum of the public keys is not valid",
+  "ECDH_FAIL": "scalar was invalid (zero or overflow)",
+  "ECDSA_SIGNATURE_TYPE_INVALID": "signature should be a Buffer",
+  "ECDSA_SIGNATURE_LENGTH_INVALID": "signature length is invalid",
+  "ECDSA_SIGNATURE_PARSE_FAIL": "couldn't parse signature",
+  "ECDSA_SIGNATURE_PARSE_DER_FAIL": "couldn't parse DER signature",
+  "ECDSA_SIGNATURE_SERIALIZE_DER_FAIL": "couldn't serialize signature to DER format",
+  "ECDSA_SIGN_FAIL": "nonce generation function failed or private key is invalid",
+  "ECDSA_RECOVER_FAIL": "couldn't recover public key from signature",
+  "MSG32_TYPE_INVALID": "message should be a Buffer",
+  "MSG32_LENGTH_INVALID": "message length is invalid",
+  "OPTIONS_TYPE_INVALID": "options should be an Object",
+  "OPTIONS_DATA_TYPE_INVALID": "options.data should be a Buffer",
+  "OPTIONS_DATA_LENGTH_INVALID": "options.data length is invalid",
+  "OPTIONS_NONCEFN_TYPE_INVALID": "options.noncefn should be a Function",
+  "RECOVERY_ID_TYPE_INVALID": "recovery should be a Number",
+  "RECOVERY_ID_VALUE_INVALID": "recovery should have value between -1 and 4",
+  "TWEAK_TYPE_INVALID": "tweak should be a Buffer",
+  "TWEAK_LENGTH_INVALID": "tweak length is invalid"
+}
+
+},{}],79:[function(require,module,exports){
+(function (Buffer){
+// prototype class for hash functions
+function Hash (blockSize, finalSize) {
+  this._block = new Buffer(blockSize)
+  this._finalSize = finalSize
+  this._blockSize = blockSize
+  this._len = 0
+  this._s = 0
+}
+
+Hash.prototype.update = function (data, enc) {
+  if (typeof data === 'string') {
+    enc = enc || 'utf8'
+    data = new Buffer(data, enc)
+  }
+
+  var l = this._len += data.length
+  var s = this._s || 0
+  var f = 0
+  var buffer = this._block
+
+  while (s < l) {
+    var t = Math.min(data.length, f + this._blockSize - (s % this._blockSize))
+    var ch = (t - f)
+
+    for (var i = 0; i < ch; i++) {
+      buffer[(s % this._blockSize) + i] = data[i + f]
+    }
+
+    s += ch
+    f += ch
+
+    if ((s % this._blockSize) === 0) {
+      this._update(buffer)
+    }
+  }
+  this._s = s
+
+  return this
+}
+
+Hash.prototype.digest = function (enc) {
+  // Suppose the length of the message M, in bits, is l
+  var l = this._len * 8
+
+  // Append the bit 1 to the end of the message
+  this._block[this._len % this._blockSize] = 0x80
+
+  // and then k zero bits, where k is the smallest non-negative solution to the equation (l + 1 + k) === finalSize mod blockSize
+  this._block.fill(0, this._len % this._blockSize + 1)
+
+  if (l % (this._blockSize * 8) >= this._finalSize * 8) {
+    this._update(this._block)
+    this._block.fill(0)
+  }
+
+  // to this append the block which is equal to the number l written in binary
+  // TODO: handle case where l is > Math.pow(2, 29)
+  this._block.writeInt32BE(l, this._blockSize - 4)
+
+  var hash = this._update(this._block) || this._hash()
+
+  return enc ? hash.toString(enc) : hash
+}
+
+Hash.prototype._update = function () {
+  throw new Error('_update must be implemented by subclass')
+}
+
+module.exports = Hash
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":5}],80:[function(require,module,exports){
+var exports = module.exports = function SHA (algorithm) {
+  algorithm = algorithm.toLowerCase()
+
+  var Algorithm = exports[algorithm]
+  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
+
+  return new Algorithm()
+}
+
+exports.sha = require('./sha')
+exports.sha1 = require('./sha1')
+exports.sha224 = require('./sha224')
+exports.sha256 = require('./sha256')
+exports.sha384 = require('./sha384')
+exports.sha512 = require('./sha512')
+
+},{"./sha":81,"./sha1":82,"./sha224":83,"./sha256":84,"./sha384":85,"./sha512":86}],81:[function(require,module,exports){
+(function (Buffer){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
+ * in FIPS PUB 180-1
+ * This source code is derived from sha1.js of the same repository.
+ * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
+ * operation was added.
+ */
+
+var inherits = require('inherits')
+var Hash = require('./hash')
+
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
+
+var W = new Array(80)
+
+function Sha () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 64, 56)
+}
+
+inherits(Sha, Hash)
+
+Sha.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
+
+  return this
+}
+
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
+
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
+
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
+
+Sha.prototype._update = function (M) {
+  var W = this._w
+
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
+
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
+
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
+
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
+  }
+
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+}
+
+Sha.prototype._hash = function () {
+  var H = new Buffer(20)
+
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
+
+  return H
+}
+
+module.exports = Sha
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"buffer":5,"inherits":63}],82:[function(require,module,exports){
+(function (Buffer){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
+ * in FIPS PUB 180-1
+ * Version 2.1a Copyright Paul Johnston 2000 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for details.
+ */
+
+var inherits = require('inherits')
+var Hash = require('./hash')
+
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
+
+var W = new Array(80)
+
+function Sha1 () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 64, 56)
+}
+
+inherits(Sha1, Hash)
+
+Sha1.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
+
+  return this
+}
+
+function rotl1 (num) {
+  return (num << 1) | (num >>> 31)
+}
+
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
+
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
+
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
+
+Sha1.prototype._update = function (M) {
+  var W = this._w
+
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
+
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
+
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
+
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
+  }
+
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+}
+
+Sha1.prototype._hash = function () {
+  var H = new Buffer(20)
+
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
+
+  return H
+}
+
+module.exports = Sha1
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"buffer":5,"inherits":63}],83:[function(require,module,exports){
+(function (Buffer){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
+ */
+
+var inherits = require('inherits')
+var Sha256 = require('./sha256')
+var Hash = require('./hash')
+
+var W = new Array(64)
+
+function Sha224 () {
+  this.init()
+
+  this._w = W // new Array(64)
+
+  Hash.call(this, 64, 56)
+}
+
+inherits(Sha224, Sha256)
+
+Sha224.prototype.init = function () {
+  this._a = 0xc1059ed8
+  this._b = 0x367cd507
+  this._c = 0x3070dd17
+  this._d = 0xf70e5939
+  this._e = 0xffc00b31
+  this._f = 0x68581511
+  this._g = 0x64f98fa7
+  this._h = 0xbefa4fa4
+
+  return this
+}
+
+Sha224.prototype._hash = function () {
+  var H = new Buffer(28)
+
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
+
+  return H
+}
+
+module.exports = Sha224
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"./sha256":84,"buffer":5,"inherits":63}],84:[function(require,module,exports){
+(function (Buffer){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
+ */
+
+var inherits = require('inherits')
+var Hash = require('./hash')
+
+var K = [
+  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
+  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
+  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
+  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
+  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
+  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
+  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
+  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
+  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
+]
+
+var W = new Array(64)
+
+function Sha256 () {
+  this.init()
+
+  this._w = W // new Array(64)
+
+  Hash.call(this, 64, 56)
+}
+
+inherits(Sha256, Hash)
+
+Sha256.prototype.init = function () {
+  this._a = 0x6a09e667
+  this._b = 0xbb67ae85
+  this._c = 0x3c6ef372
+  this._d = 0xa54ff53a
+  this._e = 0x510e527f
+  this._f = 0x9b05688c
+  this._g = 0x1f83d9ab
+  this._h = 0x5be0cd19
+
+  return this
+}
+
+function ch (x, y, z) {
+  return z ^ (x & (y ^ z))
+}
+
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
+}
+
+function sigma0 (x) {
+  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
+}
+
+function sigma1 (x) {
+  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
+}
+
+function gamma0 (x) {
+  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
+}
+
+function gamma1 (x) {
+  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
+}
+
+Sha256.prototype._update = function (M) {
+  var W = this._w
+
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
+  var f = this._f | 0
+  var g = this._g | 0
+  var h = this._h | 0
+
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
+
+  for (var j = 0; j < 64; ++j) {
+    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
+    var T2 = (sigma0(a) + maj(a, b, c)) | 0
+
+    h = g
+    g = f
+    f = e
+    e = (d + T1) | 0
+    d = c
+    c = b
+    b = a
+    a = (T1 + T2) | 0
+  }
+
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+  this._f = (f + this._f) | 0
+  this._g = (g + this._g) | 0
+  this._h = (h + this._h) | 0
+}
+
+Sha256.prototype._hash = function () {
+  var H = new Buffer(32)
+
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
+  H.writeInt32BE(this._h, 28)
+
+  return H
+}
+
+module.exports = Sha256
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"buffer":5,"inherits":63}],85:[function(require,module,exports){
+(function (Buffer){
+var inherits = require('inherits')
+var SHA512 = require('./sha512')
+var Hash = require('./hash')
+
+var W = new Array(160)
+
+function Sha384 () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 128, 112)
+}
+
+inherits(Sha384, SHA512)
+
+Sha384.prototype.init = function () {
+  this._ah = 0xcbbb9d5d
+  this._bh = 0x629a292a
+  this._ch = 0x9159015a
+  this._dh = 0x152fecd8
+  this._eh = 0x67332667
+  this._fh = 0x8eb44a87
+  this._gh = 0xdb0c2e0d
+  this._hh = 0x47b5481d
+
+  this._al = 0xc1059ed8
+  this._bl = 0x367cd507
+  this._cl = 0x3070dd17
+  this._dl = 0xf70e5939
+  this._el = 0xffc00b31
+  this._fl = 0x68581511
+  this._gl = 0x64f98fa7
+  this._hl = 0xbefa4fa4
+
+  return this
+}
+
+Sha384.prototype._hash = function () {
+  var H = new Buffer(48)
+
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
+
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
+
+  return H
+}
+
+module.exports = Sha384
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"./sha512":86,"buffer":5,"inherits":63}],86:[function(require,module,exports){
+(function (Buffer){
+var inherits = require('inherits')
+var Hash = require('./hash')
+
+var K = [
+  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
+  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
+  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
+  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
+  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
+  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
+  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
+  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
+  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
+  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
+  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
+  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
+  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
+  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
+  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
+  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
+  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
+  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
+  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
+  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
+  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
+  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
+  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
+  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
+  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
+  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
+  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
+  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
+  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
+  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
+  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
+  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
+  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
+  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
+  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
+  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
+  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
+  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
+  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
+  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
+]
+
+var W = new Array(160)
+
+function Sha512 () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 128, 112)
+}
+
+inherits(Sha512, Hash)
+
+Sha512.prototype.init = function () {
+  this._ah = 0x6a09e667
+  this._bh = 0xbb67ae85
+  this._ch = 0x3c6ef372
+  this._dh = 0xa54ff53a
+  this._eh = 0x510e527f
+  this._fh = 0x9b05688c
+  this._gh = 0x1f83d9ab
+  this._hh = 0x5be0cd19
+
+  this._al = 0xf3bcc908
+  this._bl = 0x84caa73b
+  this._cl = 0xfe94f82b
+  this._dl = 0x5f1d36f1
+  this._el = 0xade682d1
+  this._fl = 0x2b3e6c1f
+  this._gl = 0xfb41bd6b
+  this._hl = 0x137e2179
+
+  return this
+}
+
+function Ch (x, y, z) {
+  return z ^ (x & (y ^ z))
+}
+
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
+}
+
+function sigma0 (x, xl) {
+  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
+}
+
+function sigma1 (x, xl) {
+  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
+}
+
+function Gamma0 (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
+}
+
+function Gamma0l (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
+}
+
+function Gamma1 (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
+}
+
+function Gamma1l (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
+}
+
+function getCarry (a, b) {
+  return (a >>> 0) < (b >>> 0) ? 1 : 0
+}
+
+Sha512.prototype._update = function (M) {
+  var W = this._w
+
+  var ah = this._ah | 0
+  var bh = this._bh | 0
+  var ch = this._ch | 0
+  var dh = this._dh | 0
+  var eh = this._eh | 0
+  var fh = this._fh | 0
+  var gh = this._gh | 0
+  var hh = this._hh | 0
+
+  var al = this._al | 0
+  var bl = this._bl | 0
+  var cl = this._cl | 0
+  var dl = this._dl | 0
+  var el = this._el | 0
+  var fl = this._fl | 0
+  var gl = this._gl | 0
+  var hl = this._hl | 0
+
+  for (var i = 0; i < 32; i += 2) {
+    W[i] = M.readInt32BE(i * 4)
+    W[i + 1] = M.readInt32BE(i * 4 + 4)
+  }
+  for (; i < 160; i += 2) {
+    var xh = W[i - 15 * 2]
+    var xl = W[i - 15 * 2 + 1]
+    var gamma0 = Gamma0(xh, xl)
+    var gamma0l = Gamma0l(xl, xh)
+
+    xh = W[i - 2 * 2]
+    xl = W[i - 2 * 2 + 1]
+    var gamma1 = Gamma1(xh, xl)
+    var gamma1l = Gamma1l(xl, xh)
+
+    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
+    var Wi7h = W[i - 7 * 2]
+    var Wi7l = W[i - 7 * 2 + 1]
+
+    var Wi16h = W[i - 16 * 2]
+    var Wi16l = W[i - 16 * 2 + 1]
+
+    var Wil = (gamma0l + Wi7l) | 0
+    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
+    Wil = (Wil + gamma1l) | 0
+    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
+    Wil = (Wil + Wi16l) | 0
+    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
+
+    W[i] = Wih
+    W[i + 1] = Wil
+  }
+
+  for (var j = 0; j < 160; j += 2) {
+    Wih = W[j]
+    Wil = W[j + 1]
+
+    var majh = maj(ah, bh, ch)
+    var majl = maj(al, bl, cl)
+
+    var sigma0h = sigma0(ah, al)
+    var sigma0l = sigma0(al, ah)
+    var sigma1h = sigma1(eh, el)
+    var sigma1l = sigma1(el, eh)
+
+    // t1 = h + sigma1 + ch + K[j] + W[j]
+    var Kih = K[j]
+    var Kil = K[j + 1]
+
+    var chh = Ch(eh, fh, gh)
+    var chl = Ch(el, fl, gl)
+
+    var t1l = (hl + sigma1l) | 0
+    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
+    t1l = (t1l + chl) | 0
+    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
+    t1l = (t1l + Kil) | 0
+    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
+    t1l = (t1l + Wil) | 0
+    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
+
+    // t2 = sigma0 + maj
+    var t2l = (sigma0l + majl) | 0
+    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
+
+    hh = gh
+    hl = gl
+    gh = fh
+    gl = fl
+    fh = eh
+    fl = el
+    el = (dl + t1l) | 0
+    eh = (dh + t1h + getCarry(el, dl)) | 0
+    dh = ch
+    dl = cl
+    ch = bh
+    cl = bl
+    bh = ah
+    bl = al
+    al = (t1l + t2l) | 0
+    ah = (t1h + t2h + getCarry(al, t1l)) | 0
+  }
+
+  this._al = (this._al + al) | 0
+  this._bl = (this._bl + bl) | 0
+  this._cl = (this._cl + cl) | 0
+  this._dl = (this._dl + dl) | 0
+  this._el = (this._el + el) | 0
+  this._fl = (this._fl + fl) | 0
+  this._gl = (this._gl + gl) | 0
+  this._hl = (this._hl + hl) | 0
+
+  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
+  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
+  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
+  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
+  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
+  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
+  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
+  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
+}
+
+Sha512.prototype._hash = function () {
+  var H = new Buffer(64)
+
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
+
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
+  writeInt64BE(this._gh, this._gl, 48)
+  writeInt64BE(this._hh, this._hl, 56)
+
+  return H
+}
+
+module.exports = Sha512
+
+}).call(this,require("buffer").Buffer)
+},{"./hash":79,"buffer":5,"inherits":63}],87:[function(require,module,exports){
+var isHexPrefixed = require('is-hex-prefixed');
+
+/**
+ * Removes '0x' from a given `String` is present
+ * @param {String} str the string value
+ * @return {String|Optional} a string by pass if necessary
+ */
+module.exports = function stripHexPrefix(str) {
+  if (typeof str !== 'string') {
+    return str;
+  }
+
+  return isHexPrefixed(str) ? str.slice(2) : str;
+}
+
+},{"is-hex-prefixed":64}]},{},[31])(31)
+});</script>
+        <script>function convertRippleAdrr(address) {
+        return window.basex('rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz').encode(
+           window.basex('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz').decode(address)
+        )
+      }
+
+function convertRipplePriv(priv)   {
+        return window.basex('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz').decode(priv).toString("hex").slice(2,66)
+}   
+      
+</script>
+        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bchaddr = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+// base-x encoding
+// Forked from https://github.com/cryptocoinjs/bs58
+// Originally written by Mike Hearn for BitcoinJ
+// Copyright (c) 2011 Google Inc
+// Ported to JavaScript by Stefan Thomas
+// Merged Buffer refactorings from base58-native by Stephen Pair
+// Copyright (c) 2013 BitPay Inc
+
+var Buffer = require('safe-buffer').Buffer
+
+module.exports = function base (ALPHABET) {
+  var ALPHABET_MAP = {}
+  var BASE = ALPHABET.length
+  var LEADER = ALPHABET.charAt(0)
+
+  // pre-compute lookup table
+  for (var z = 0; z < ALPHABET.length; z++) {
+    var x = ALPHABET.charAt(z)
+
+    if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
+    ALPHABET_MAP[x] = z
+  }
+
+  function encode (source) {
+    if (source.length === 0) return ''
+
+    var digits = [0]
+    for (var i = 0; i < source.length; ++i) {
+      for (var j = 0, carry = source[i]; j < digits.length; ++j) {
+        carry += digits[j] << 8
+        digits[j] = carry % BASE
+        carry = (carry / BASE) | 0
+      }
+
+      while (carry > 0) {
+        digits.push(carry % BASE)
+        carry = (carry / BASE) | 0
+      }
+    }
+
+    var string = ''
+
+    // deal with leading zeros
+    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += LEADER
+    // convert digits to a string
+    for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
+
+    return string
+  }
+
+  function decodeUnsafe (string) {
+    if (typeof string !== 'string') throw new TypeError('Expected String')
+    if (string.length === 0) return Buffer.allocUnsafe(0)
+
+    var bytes = [0]
+    for (var i = 0; i < string.length; i++) {
+      var value = ALPHABET_MAP[string[i]]
+      if (value === undefined) return
+
+      for (var j = 0, carry = value; j < bytes.length; ++j) {
+        carry += bytes[j] * BASE
+        bytes[j] = carry & 0xff
+        carry >>= 8
+      }
+
+      while (carry > 0) {
+        bytes.push(carry & 0xff)
+        carry >>= 8
+      }
+    }
+
+    // deal with leading zeros
+    for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
+      bytes.push(0)
+    }
+
+    return Buffer.from(bytes.reverse())
+  }
+
+  function decode (string) {
+    var buffer = decodeUnsafe(string)
+    if (buffer) return buffer
+
+    throw new Error('Non-base' + BASE + ' character')
+  }
+
+  return {
+    encode: encode,
+    decodeUnsafe: decodeUnsafe,
+    decode: decode
+  }
+}
+
+},{"safe-buffer":40}],2:[function(require,module,exports){
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function placeHoldersCount (b64) {
+  var len = b64.length
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // the number of equal signs (place holders)
+  // if there are two placeholders, than the two characters before it
+  // represent one byte
+  // if there is only one, then the three characters before it represent 2 bytes
+  // this is just a cheap hack to not do indexOf twice
+  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+}
+
+function byteLength (b64) {
+  // base64 is 4/3 + up to two characters of the original data
+  return (b64.length * 3 / 4) - placeHoldersCount(b64)
+}
+
+function toByteArray (b64) {
+  var i, l, tmp, placeHolders, arr
+  var len = b64.length
+  placeHolders = placeHoldersCount(b64)
+
+  arr = new Arr((len * 3 / 4) - placeHolders)
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  l = placeHolders > 0 ? len - 4 : len
+
+  var L = 0
+
+  for (i = 0; i < l; i += 4) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+    arr[L++] = (tmp >> 16) & 0xFF
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  if (placeHolders === 2) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[L++] = tmp & 0xFF
+  } else if (placeHolders === 1) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var output = ''
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    output += lookup[tmp >> 2]
+    output += lookup[(tmp << 4) & 0x3F]
+    output += '=='
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+    output += lookup[tmp >> 10]
+    output += lookup[(tmp >> 4) & 0x3F]
+    output += lookup[(tmp << 2) & 0x3F]
+    output += '='
+  }
+
+  parts.push(output)
+
+  return parts.join('')
+}
+
+},{}],3:[function(require,module,exports){
+var bigInt = (function (undefined) {
+    "use strict";
+
+    var BASE = 1e7,
+        LOG_BASE = 7,
+        MAX_INT = 9007199254740992,
+        MAX_INT_ARR = smallToArray(MAX_INT),
+        LOG_MAX_INT = Math.log(MAX_INT);
+
+    function Integer(v, radix) {
+        if (typeof v === "undefined") return Integer[0];
+        if (typeof radix !== "undefined") return +radix === 10 ? parseValue(v) : parseBase(v, radix);
+        return parseValue(v);
+    }
+
+    function BigInteger(value, sign) {
+        this.value = value;
+        this.sign = sign;
+        this.isSmall = false;
+    }
+    BigInteger.prototype = Object.create(Integer.prototype);
+
+    function SmallInteger(value) {
+        this.value = value;
+        this.sign = value < 0;
+        this.isSmall = true;
+    }
+    SmallInteger.prototype = Object.create(Integer.prototype);
+
+    function isPrecise(n) {
+        return -MAX_INT < n && n < MAX_INT;
+    }
+
+    function smallToArray(n) { // For performance reasons doesn't reference BASE, need to change this function if BASE changes
+        if (n < 1e7)
+            return [n];
+        if (n < 1e14)
+            return [n % 1e7, Math.floor(n / 1e7)];
+        return [n % 1e7, Math.floor(n / 1e7) % 1e7, Math.floor(n / 1e14)];
+    }
+
+    function arrayToSmall(arr) { // If BASE changes this function may need to change
+        trim(arr);
+        var length = arr.length;
+        if (length < 4 && compareAbs(arr, MAX_INT_ARR) < 0) {
+            switch (length) {
+                case 0: return 0;
+                case 1: return arr[0];
+                case 2: return arr[0] + arr[1] * BASE;
+                default: return arr[0] + (arr[1] + arr[2] * BASE) * BASE;
+            }
+        }
+        return arr;
+    }
+
+    function trim(v) {
+        var i = v.length;
+        while (v[--i] === 0);
+        v.length = i + 1;
+    }
+
+    function createArray(length) { // function shamelessly stolen from Yaffle's library https://github.com/Yaffle/BigInteger
+        var x = new Array(length);
+        var i = -1;
+        while (++i < length) {
+            x[i] = 0;
+        }
+        return x;
+    }
+
+    function truncate(n) {
+        if (n > 0) return Math.floor(n);
+        return Math.ceil(n);
+    }
+
+    function add(a, b) { // assumes a and b are arrays with a.length >= b.length
+        var l_a = a.length,
+            l_b = b.length,
+            r = new Array(l_a),
+            carry = 0,
+            base = BASE,
+            sum, i;
+        for (i = 0; i < l_b; i++) {
+            sum = a[i] + b[i] + carry;
+            carry = sum >= base ? 1 : 0;
+            r[i] = sum - carry * base;
+        }
+        while (i < l_a) {
+            sum = a[i] + carry;
+            carry = sum === base ? 1 : 0;
+            r[i++] = sum - carry * base;
+        }
+        if (carry > 0) r.push(carry);
+        return r;
+    }
+
+    function addAny(a, b) {
+        if (a.length >= b.length) return add(a, b);
+        return add(b, a);
+    }
+
+    function addSmall(a, carry) { // assumes a is array, carry is number with 0 <= carry < MAX_INT
+        var l = a.length,
+            r = new Array(l),
+            base = BASE,
+            sum, i;
+        for (i = 0; i < l; i++) {
+            sum = a[i] - base + carry;
+            carry = Math.floor(sum / base);
+            r[i] = sum - carry * base;
+            carry += 1;
+        }
+        while (carry > 0) {
+            r[i++] = carry % base;
+            carry = Math.floor(carry / base);
+        }
+        return r;
+    }
+
+    BigInteger.prototype.add = function (v) {
+        var n = parseValue(v);
+        if (this.sign !== n.sign) {
+            return this.subtract(n.negate());
+        }
+        var a = this.value, b = n.value;
+        if (n.isSmall) {
+            return new BigInteger(addSmall(a, Math.abs(b)), this.sign);
+        }
+        return new BigInteger(addAny(a, b), this.sign);
+    };
+    BigInteger.prototype.plus = BigInteger.prototype.add;
+
+    SmallInteger.prototype.add = function (v) {
+        var n = parseValue(v);
+        var a = this.value;
+        if (a < 0 !== n.sign) {
+            return this.subtract(n.negate());
+        }
+        var b = n.value;
+        if (n.isSmall) {
+            if (isPrecise(a + b)) return new SmallInteger(a + b);
+            b = smallToArray(Math.abs(b));
+        }
+        return new BigInteger(addSmall(b, Math.abs(a)), a < 0);
+    };
+    SmallInteger.prototype.plus = SmallInteger.prototype.add;
+
+    function subtract(a, b) { // assumes a and b are arrays with a >= b
+        var a_l = a.length,
+            b_l = b.length,
+            r = new Array(a_l),
+            borrow = 0,
+            base = BASE,
+            i, difference;
+        for (i = 0; i < b_l; i++) {
+            difference = a[i] - borrow - b[i];
+            if (difference < 0) {
+                difference += base;
+                borrow = 1;
+            } else borrow = 0;
+            r[i] = difference;
+        }
+        for (i = b_l; i < a_l; i++) {
+            difference = a[i] - borrow;
+            if (difference < 0) difference += base;
+            else {
+                r[i++] = difference;
+                break;
+            }
+            r[i] = difference;
+        }
+        for (; i < a_l; i++) {
+            r[i] = a[i];
+        }
+        trim(r);
+        return r;
+    }
+
+    function subtractAny(a, b, sign) {
+        var value;
+        if (compareAbs(a, b) >= 0) {
+            value = subtract(a,b);
+        } else {
+            value = subtract(b, a);
+            sign = !sign;
+        }
+        value = arrayToSmall(value);
+        if (typeof value === "number") {
+            if (sign) value = -value;
+            return new SmallInteger(value);
+        }
+        return new BigInteger(value, sign);
+    }
+
+    function subtractSmall(a, b, sign) { // assumes a is array, b is number with 0 <= b < MAX_INT
+        var l = a.length,
+            r = new Array(l),
+            carry = -b,
+            base = BASE,
+            i, difference;
+        for (i = 0; i < l; i++) {
+            difference = a[i] + carry;
+            carry = Math.floor(difference / base);
+            difference %= base;
+            r[i] = difference < 0 ? difference + base : difference;
+        }
+        r = arrayToSmall(r);
+        if (typeof r === "number") {
+            if (sign) r = -r;
+            return new SmallInteger(r);
+        } return new BigInteger(r, sign);
+    }
+
+    BigInteger.prototype.subtract = function (v) {
+        var n = parseValue(v);
+        if (this.sign !== n.sign) {
+            return this.add(n.negate());
+        }
+        var a = this.value, b = n.value;
+        if (n.isSmall)
+            return subtractSmall(a, Math.abs(b), this.sign);
+        return subtractAny(a, b, this.sign);
+    };
+    BigInteger.prototype.minus = BigInteger.prototype.subtract;
+
+    SmallInteger.prototype.subtract = function (v) {
+        var n = parseValue(v);
+        var a = this.value;
+        if (a < 0 !== n.sign) {
+            return this.add(n.negate());
+        }
+        var b = n.value;
+        if (n.isSmall) {
+            return new SmallInteger(a - b);
+        }
+        return subtractSmall(b, Math.abs(a), a >= 0);
+    };
+    SmallInteger.prototype.minus = SmallInteger.prototype.subtract;
+
+    BigInteger.prototype.negate = function () {
+        return new BigInteger(this.value, !this.sign);
+    };
+    SmallInteger.prototype.negate = function () {
+        var sign = this.sign;
+        var small = new SmallInteger(-this.value);
+        small.sign = !sign;
+        return small;
+    };
+
+    BigInteger.prototype.abs = function () {
+        return new BigInteger(this.value, false);
+    };
+    SmallInteger.prototype.abs = function () {
+        return new SmallInteger(Math.abs(this.value));
+    };
+
+    function multiplyLong(a, b) {
+        var a_l = a.length,
+            b_l = b.length,
+            l = a_l + b_l,
+            r = createArray(l),
+            base = BASE,
+            product, carry, i, a_i, b_j;
+        for (i = 0; i < a_l; ++i) {
+            a_i = a[i];
+            for (var j = 0; j < b_l; ++j) {
+                b_j = b[j];
+                product = a_i * b_j + r[i + j];
+                carry = Math.floor(product / base);
+                r[i + j] = product - carry * base;
+                r[i + j + 1] += carry;
+            }
+        }
+        trim(r);
+        return r;
+    }
+
+    function multiplySmall(a, b) { // assumes a is array, b is number with |b| < BASE
+        var l = a.length,
+            r = new Array(l),
+            base = BASE,
+            carry = 0,
+            product, i;
+        for (i = 0; i < l; i++) {
+            product = a[i] * b + carry;
+            carry = Math.floor(product / base);
+            r[i] = product - carry * base;
+        }
+        while (carry > 0) {
+            r[i++] = carry % base;
+            carry = Math.floor(carry / base);
+        }
+        return r;
+    }
+
+    function shiftLeft(x, n) {
+        var r = [];
+        while (n-- > 0) r.push(0);
+        return r.concat(x);
+    }
+
+    function multiplyKaratsuba(x, y) {
+        var n = Math.max(x.length, y.length);
+
+        if (n <= 30) return multiplyLong(x, y);
+        n = Math.ceil(n / 2);
+
+        var b = x.slice(n),
+            a = x.slice(0, n),
+            d = y.slice(n),
+            c = y.slice(0, n);
+
+        var ac = multiplyKaratsuba(a, c),
+            bd = multiplyKaratsuba(b, d),
+            abcd = multiplyKaratsuba(addAny(a, b), addAny(c, d));
+
+        var product = addAny(addAny(ac, shiftLeft(subtract(subtract(abcd, ac), bd), n)), shiftLeft(bd, 2 * n));
+        trim(product);
+        return product;
+    }
+
+    // The following function is derived from a surface fit of a graph plotting the performance difference
+    // between long multiplication and karatsuba multiplication versus the lengths of the two arrays.
+    function useKaratsuba(l1, l2) {
+        return -0.012 * l1 - 0.012 * l2 + 0.000015 * l1 * l2 > 0;
+    }
+
+    BigInteger.prototype.multiply = function (v) {
+        var n = parseValue(v),
+            a = this.value, b = n.value,
+            sign = this.sign !== n.sign,
+            abs;
+        if (n.isSmall) {
+            if (b === 0) return Integer[0];
+            if (b === 1) return this;
+            if (b === -1) return this.negate();
+            abs = Math.abs(b);
+            if (abs < BASE) {
+                return new BigInteger(multiplySmall(a, abs), sign);
+            }
+            b = smallToArray(abs);
+        }
+        if (useKaratsuba(a.length, b.length)) // Karatsuba is only faster for certain array sizes
+            return new BigInteger(multiplyKaratsuba(a, b), sign);
+        return new BigInteger(multiplyLong(a, b), sign);
+    };
+
+    BigInteger.prototype.times = BigInteger.prototype.multiply;
+
+    function multiplySmallAndArray(a, b, sign) { // a >= 0
+        if (a < BASE) {
+            return new BigInteger(multiplySmall(b, a), sign);
+        }
+        return new BigInteger(multiplyLong(b, smallToArray(a)), sign);
+    }
+    SmallInteger.prototype._multiplyBySmall = function (a) {
+            if (isPrecise(a.value * this.value)) {
+                return new SmallInteger(a.value * this.value);
+            }
+            return multiplySmallAndArray(Math.abs(a.value), smallToArray(Math.abs(this.value)), this.sign !== a.sign);
+    };
+    BigInteger.prototype._multiplyBySmall = function (a) {
+            if (a.value === 0) return Integer[0];
+            if (a.value === 1) return this;
+            if (a.value === -1) return this.negate();
+            return multiplySmallAndArray(Math.abs(a.value), this.value, this.sign !== a.sign);
+    };
+    SmallInteger.prototype.multiply = function (v) {
+        return parseValue(v)._multiplyBySmall(this);
+    };
+    SmallInteger.prototype.times = SmallInteger.prototype.multiply;
+
+    function square(a) {
+        var l = a.length,
+            r = createArray(l + l),
+            base = BASE,
+            product, carry, i, a_i, a_j;
+        for (i = 0; i < l; i++) {
+            a_i = a[i];
+            for (var j = 0; j < l; j++) {
+                a_j = a[j];
+                product = a_i * a_j + r[i + j];
+                carry = Math.floor(product / base);
+                r[i + j] = product - carry * base;
+                r[i + j + 1] += carry;
+            }
+        }
+        trim(r);
+        return r;
+    }
+
+    BigInteger.prototype.square = function () {
+        return new BigInteger(square(this.value), false);
+    };
+
+    SmallInteger.prototype.square = function () {
+        var value = this.value * this.value;
+        if (isPrecise(value)) return new SmallInteger(value);
+        return new BigInteger(square(smallToArray(Math.abs(this.value))), false);
+    };
+
+    function divMod1(a, b) { // Left over from previous version. Performs faster than divMod2 on smaller input sizes.
+        var a_l = a.length,
+            b_l = b.length,
+            base = BASE,
+            result = createArray(b.length),
+            divisorMostSignificantDigit = b[b_l - 1],
+            // normalization
+            lambda = Math.ceil(base / (2 * divisorMostSignificantDigit)),
+            remainder = multiplySmall(a, lambda),
+            divisor = multiplySmall(b, lambda),
+            quotientDigit, shift, carry, borrow, i, l, q;
+        if (remainder.length <= a_l) remainder.push(0);
+        divisor.push(0);
+        divisorMostSignificantDigit = divisor[b_l - 1];
+        for (shift = a_l - b_l; shift >= 0; shift--) {
+            quotientDigit = base - 1;
+            if (remainder[shift + b_l] !== divisorMostSignificantDigit) {
+              quotientDigit = Math.floor((remainder[shift + b_l] * base + remainder[shift + b_l - 1]) / divisorMostSignificantDigit);
+            }
+            // quotientDigit <= base - 1
+            carry = 0;
+            borrow = 0;
+            l = divisor.length;
+            for (i = 0; i < l; i++) {
+                carry += quotientDigit * divisor[i];
+                q = Math.floor(carry / base);
+                borrow += remainder[shift + i] - (carry - q * base);
+                carry = q;
+                if (borrow < 0) {
+                    remainder[shift + i] = borrow + base;
+                    borrow = -1;
+                } else {
+                    remainder[shift + i] = borrow;
+                    borrow = 0;
+                }
+            }
+            while (borrow !== 0) {
+                quotientDigit -= 1;
+                carry = 0;
+                for (i = 0; i < l; i++) {
+                    carry += remainder[shift + i] - base + divisor[i];
+                    if (carry < 0) {
+                        remainder[shift + i] = carry + base;
+                        carry = 0;
+                    } else {
+                        remainder[shift + i] = carry;
+                        carry = 1;
+                    }
+                }
+                borrow += carry;
+            }
+            result[shift] = quotientDigit;
+        }
+        // denormalization
+        remainder = divModSmall(remainder, lambda)[0];
+        return [arrayToSmall(result), arrayToSmall(remainder)];
+    }
+
+    function divMod2(a, b) { // Implementation idea shamelessly stolen from Silent Matt's library http://silentmatt.com/biginteger/
+        // Performs faster than divMod1 on larger input sizes.
+        var a_l = a.length,
+            b_l = b.length,
+            result = [],
+            part = [],
+            base = BASE,
+            guess, xlen, highx, highy, check;
+        while (a_l) {
+            part.unshift(a[--a_l]);
+            trim(part);
+            if (compareAbs(part, b) < 0) {
+                result.push(0);
+                continue;
+            }
+            xlen = part.length;
+            highx = part[xlen - 1] * base + part[xlen - 2];
+            highy = b[b_l - 1] * base + b[b_l - 2];
+            if (xlen > b_l) {
+                highx = (highx + 1) * base;
+            }
+            guess = Math.ceil(highx / highy);
+            do {
+                check = multiplySmall(b, guess);
+                if (compareAbs(check, part) <= 0) break;
+                guess--;
+            } while (guess);
+            result.push(guess);
+            part = subtract(part, check);
+        }
+        result.reverse();
+        return [arrayToSmall(result), arrayToSmall(part)];
+    }
+
+    function divModSmall(value, lambda) {
+        var length = value.length,
+            quotient = createArray(length),
+            base = BASE,
+            i, q, remainder, divisor;
+        remainder = 0;
+        for (i = length - 1; i >= 0; --i) {
+            divisor = remainder * base + value[i];
+            q = truncate(divisor / lambda);
+            remainder = divisor - q * lambda;
+            quotient[i] = q | 0;
+        }
+        return [quotient, remainder | 0];
+    }
+
+    function divModAny(self, v) {
+        var value, n = parseValue(v);
+        var a = self.value, b = n.value;
+        var quotient;
+        if (b === 0) throw new Error("Cannot divide by zero");
+        if (self.isSmall) {
+            if (n.isSmall) {
+                return [new SmallInteger(truncate(a / b)), new SmallInteger(a % b)];
+            }
+            return [Integer[0], self];
+        }
+        if (n.isSmall) {
+            if (b === 1) return [self, Integer[0]];
+            if (b == -1) return [self.negate(), Integer[0]];
+            var abs = Math.abs(b);
+            if (abs < BASE) {
+                value = divModSmall(a, abs);
+                quotient = arrayToSmall(value[0]);
+                var remainder = value[1];
+                if (self.sign) remainder = -remainder;
+                if (typeof quotient === "number") {
+                    if (self.sign !== n.sign) quotient = -quotient;
+                    return [new SmallInteger(quotient), new SmallInteger(remainder)];
+                }
+                return [new BigInteger(quotient, self.sign !== n.sign), new SmallInteger(remainder)];
+            }
+            b = smallToArray(abs);
+        }
+        var comparison = compareAbs(a, b);
+        if (comparison === -1) return [Integer[0], self];
+        if (comparison === 0) return [Integer[self.sign === n.sign ? 1 : -1], Integer[0]];
+
+        // divMod1 is faster on smaller input sizes
+        if (a.length + b.length <= 200)
+            value = divMod1(a, b);
+        else value = divMod2(a, b);
+
+        quotient = value[0];
+        var qSign = self.sign !== n.sign,
+            mod = value[1],
+            mSign = self.sign;
+        if (typeof quotient === "number") {
+            if (qSign) quotient = -quotient;
+            quotient = new SmallInteger(quotient);
+        } else quotient = new BigInteger(quotient, qSign);
+        if (typeof mod === "number") {
+            if (mSign) mod = -mod;
+            mod = new SmallInteger(mod);
+        } else mod = new BigInteger(mod, mSign);
+        return [quotient, mod];
+    }
+
+    BigInteger.prototype.divmod = function (v) {
+        var result = divModAny(this, v);
+        return {
+            quotient: result[0],
+            remainder: result[1]
+        };
+    };
+    SmallInteger.prototype.divmod = BigInteger.prototype.divmod;
+
+    BigInteger.prototype.divide = function (v) {
+        return divModAny(this, v)[0];
+    };
+    SmallInteger.prototype.over = SmallInteger.prototype.divide = BigInteger.prototype.over = BigInteger.prototype.divide;
+
+    BigInteger.prototype.mod = function (v) {
+        return divModAny(this, v)[1];
+    };
+    SmallInteger.prototype.remainder = SmallInteger.prototype.mod = BigInteger.prototype.remainder = BigInteger.prototype.mod;
+
+    BigInteger.prototype.pow = function (v) {
+        var n = parseValue(v),
+            a = this.value,
+            b = n.value,
+            value, x, y;
+        if (b === 0) return Integer[1];
+        if (a === 0) return Integer[0];
+        if (a === 1) return Integer[1];
+        if (a === -1) return n.isEven() ? Integer[1] : Integer[-1];
+        if (n.sign) {
+            return Integer[0];
+        }
+        if (!n.isSmall) throw new Error("The exponent " + n.toString() + " is too large.");
+        if (this.isSmall) {
+            if (isPrecise(value = Math.pow(a, b)))
+                return new SmallInteger(truncate(value));
+        }
+        x = this;
+        y = Integer[1];
+        while (true) {
+            if (b & 1 === 1) {
+                y = y.times(x);
+                --b;
+            }
+            if (b === 0) break;
+            b /= 2;
+            x = x.square();
+        }
+        return y;
+    };
+    SmallInteger.prototype.pow = BigInteger.prototype.pow;
+
+    BigInteger.prototype.modPow = function (exp, mod) {
+        exp = parseValue(exp);
+        mod = parseValue(mod);
+        if (mod.isZero()) throw new Error("Cannot take modPow with modulus 0");
+        var r = Integer[1],
+            base = this.mod(mod);
+        while (exp.isPositive()) {
+            if (base.isZero()) return Integer[0];
+            if (exp.isOdd()) r = r.multiply(base).mod(mod);
+            exp = exp.divide(2);
+            base = base.square().mod(mod);
+        }
+        return r;
+    };
+    SmallInteger.prototype.modPow = BigInteger.prototype.modPow;
+
+    function compareAbs(a, b) {
+        if (a.length !== b.length) {
+            return a.length > b.length ? 1 : -1;
+        }
+        for (var i = a.length - 1; i >= 0; i--) {
+            if (a[i] !== b[i]) return a[i] > b[i] ? 1 : -1;
+        }
+        return 0;
+    }
+
+    BigInteger.prototype.compareAbs = function (v) {
+        var n = parseValue(v),
+            a = this.value,
+            b = n.value;
+        if (n.isSmall) return 1;
+        return compareAbs(a, b);
+    };
+    SmallInteger.prototype.compareAbs = function (v) {
+        var n = parseValue(v),
+            a = Math.abs(this.value),
+            b = n.value;
+        if (n.isSmall) {
+            b = Math.abs(b);
+            return a === b ? 0 : a > b ? 1 : -1;
+        }
+        return -1;
+    };
+
+    BigInteger.prototype.compare = function (v) {
+        // See discussion about comparison with Infinity:
+        // https://github.com/peterolson/BigInteger.js/issues/61
+        if (v === Infinity) {
+            return -1;
+        }
+        if (v === -Infinity) {
+            return 1;
+        }
+
+        var n = parseValue(v),
+            a = this.value,
+            b = n.value;
+        if (this.sign !== n.sign) {
+            return n.sign ? 1 : -1;
+        }
+        if (n.isSmall) {
+            return this.sign ? -1 : 1;
+        }
+        return compareAbs(a, b) * (this.sign ? -1 : 1);
+    };
+    BigInteger.prototype.compareTo = BigInteger.prototype.compare;
+
+    SmallInteger.prototype.compare = function (v) {
+        if (v === Infinity) {
+            return -1;
+        }
+        if (v === -Infinity) {
+            return 1;
+        }
+
+        var n = parseValue(v),
+            a = this.value,
+            b = n.value;
+        if (n.isSmall) {
+            return a == b ? 0 : a > b ? 1 : -1;
+        }
+        if (a < 0 !== n.sign) {
+            return a < 0 ? -1 : 1;
+        }
+        return a < 0 ? 1 : -1;
+    };
+    SmallInteger.prototype.compareTo = SmallInteger.prototype.compare;
+
+    BigInteger.prototype.equals = function (v) {
+        return this.compare(v) === 0;
+    };
+    SmallInteger.prototype.eq = SmallInteger.prototype.equals = BigInteger.prototype.eq = BigInteger.prototype.equals;
+
+    BigInteger.prototype.notEquals = function (v) {
+        return this.compare(v) !== 0;
+    };
+    SmallInteger.prototype.neq = SmallInteger.prototype.notEquals = BigInteger.prototype.neq = BigInteger.prototype.notEquals;
+
+    BigInteger.prototype.greater = function (v) {
+        return this.compare(v) > 0;
+    };
+    SmallInteger.prototype.gt = SmallInteger.prototype.greater = BigInteger.prototype.gt = BigInteger.prototype.greater;
+
+    BigInteger.prototype.lesser = function (v) {
+        return this.compare(v) < 0;
+    };
+    SmallInteger.prototype.lt = SmallInteger.prototype.lesser = BigInteger.prototype.lt = BigInteger.prototype.lesser;
+
+    BigInteger.prototype.greaterOrEquals = function (v) {
+        return this.compare(v) >= 0;
+    };
+    SmallInteger.prototype.geq = SmallInteger.prototype.greaterOrEquals = BigInteger.prototype.geq = BigInteger.prototype.greaterOrEquals;
+
+    BigInteger.prototype.lesserOrEquals = function (v) {
+        return this.compare(v) <= 0;
+    };
+    SmallInteger.prototype.leq = SmallInteger.prototype.lesserOrEquals = BigInteger.prototype.leq = BigInteger.prototype.lesserOrEquals;
+
+    BigInteger.prototype.isEven = function () {
+        return (this.value[0] & 1) === 0;
+    };
+    SmallInteger.prototype.isEven = function () {
+        return (this.value & 1) === 0;
+    };
+
+    BigInteger.prototype.isOdd = function () {
+        return (this.value[0] & 1) === 1;
+    };
+    SmallInteger.prototype.isOdd = function () {
+        return (this.value & 1) === 1;
+    };
+
+    BigInteger.prototype.isPositive = function () {
+        return !this.sign;
+    };
+    SmallInteger.prototype.isPositive = function () {
+        return this.value > 0;
+    };
+
+    BigInteger.prototype.isNegative = function () {
+        return this.sign;
+    };
+    SmallInteger.prototype.isNegative = function () {
+        return this.value < 0;
+    };
+
+    BigInteger.prototype.isUnit = function () {
+        return false;
+    };
+    SmallInteger.prototype.isUnit = function () {
+        return Math.abs(this.value) === 1;
+    };
+
+    BigInteger.prototype.isZero = function () {
+        return false;
+    };
+    SmallInteger.prototype.isZero = function () {
+        return this.value === 0;
+    };
+    BigInteger.prototype.isDivisibleBy = function (v) {
+        var n = parseValue(v);
+        var value = n.value;
+        if (value === 0) return false;
+        if (value === 1) return true;
+        if (value === 2) return this.isEven();
+        return this.mod(n).equals(Integer[0]);
+    };
+    SmallInteger.prototype.isDivisibleBy = BigInteger.prototype.isDivisibleBy;
+
+    function isBasicPrime(v) {
+        var n = v.abs();
+        if (n.isUnit()) return false;
+        if (n.equals(2) || n.equals(3) || n.equals(5)) return true;
+        if (n.isEven() || n.isDivisibleBy(3) || n.isDivisibleBy(5)) return false;
+        if (n.lesser(25)) return true;
+        // we don't know if it's prime: let the other functions figure it out
+    }
+
+    BigInteger.prototype.isPrime = function () {
+        var isPrime = isBasicPrime(this);
+        if (isPrime !== undefined) return isPrime;
+        var n = this.abs(),
+            nPrev = n.prev();
+        var a = [2, 3, 5, 7, 11, 13, 17, 19],
+            b = nPrev,
+            d, t, i, x;
+        while (b.isEven()) b = b.divide(2);
+        for (i = 0; i < a.length; i++) {
+            x = bigInt(a[i]).modPow(b, n);
+            if (x.equals(Integer[1]) || x.equals(nPrev)) continue;
+            for (t = true, d = b; t && d.lesser(nPrev) ; d = d.multiply(2)) {
+                x = x.square().mod(n);
+                if (x.equals(nPrev)) t = false;
+            }
+            if (t) return false;
+        }
+        return true;
+    };
+    SmallInteger.prototype.isPrime = BigInteger.prototype.isPrime;
+
+    BigInteger.prototype.isProbablePrime = function (iterations) {
+        var isPrime = isBasicPrime(this);
+        if (isPrime !== undefined) return isPrime;
+        var n = this.abs();
+        var t = iterations === undefined ? 5 : iterations;
+        // use the Fermat primality test
+        for (var i = 0; i < t; i++) {
+            var a = bigInt.randBetween(2, n.minus(2));
+            if (!a.modPow(n.prev(), n).isUnit()) return false; // definitely composite
+        }
+        return true; // large chance of being prime
+    };
+    SmallInteger.prototype.isProbablePrime = BigInteger.prototype.isProbablePrime;
+
+    BigInteger.prototype.modInv = function (n) {
+        var t = bigInt.zero, newT = bigInt.one, r = parseValue(n), newR = this.abs(), q, lastT, lastR;
+        while (!newR.equals(bigInt.zero)) {
+            q = r.divide(newR);
+            lastT = t;
+            lastR = r;
+            t = newT;
+            r = newR;
+            newT = lastT.subtract(q.multiply(newT));
+            newR = lastR.subtract(q.multiply(newR));
+        }
+        if (!r.equals(1)) throw new Error(this.toString() + " and " + n.toString() + " are not co-prime");
+        if (t.compare(0) === -1) {
+            t = t.add(n);
+        }
+        if (this.isNegative()) {
+            return t.negate();
+        }
+        return t;
+    };
+
+    SmallInteger.prototype.modInv = BigInteger.prototype.modInv;
+
+    BigInteger.prototype.next = function () {
+        var value = this.value;
+        if (this.sign) {
+            return subtractSmall(value, 1, this.sign);
+        }
+        return new BigInteger(addSmall(value, 1), this.sign);
+    };
+    SmallInteger.prototype.next = function () {
+        var value = this.value;
+        if (value + 1 < MAX_INT) return new SmallInteger(value + 1);
+        return new BigInteger(MAX_INT_ARR, false);
+    };
+
+    BigInteger.prototype.prev = function () {
+        var value = this.value;
+        if (this.sign) {
+            return new BigInteger(addSmall(value, 1), true);
+        }
+        return subtractSmall(value, 1, this.sign);
+    };
+    SmallInteger.prototype.prev = function () {
+        var value = this.value;
+        if (value - 1 > -MAX_INT) return new SmallInteger(value - 1);
+        return new BigInteger(MAX_INT_ARR, true);
+    };
+
+    var powersOfTwo = [1];
+    while (2 * powersOfTwo[powersOfTwo.length - 1] <= BASE) powersOfTwo.push(2 * powersOfTwo[powersOfTwo.length - 1]);
+    var powers2Length = powersOfTwo.length, highestPower2 = powersOfTwo[powers2Length - 1];
+
+    function shift_isSmall(n) {
+        return ((typeof n === "number" || typeof n === "string") && +Math.abs(n) <= BASE) ||
+            (n instanceof BigInteger && n.value.length <= 1);
+    }
+
+    BigInteger.prototype.shiftLeft = function (n) {
+        if (!shift_isSmall(n)) {
+            throw new Error(String(n) + " is too large for shifting.");
+        }
+        n = +n;
+        if (n < 0) return this.shiftRight(-n);
+        var result = this;
+        while (n >= powers2Length) {
+            result = result.multiply(highestPower2);
+            n -= powers2Length - 1;
+        }
+        return result.multiply(powersOfTwo[n]);
+    };
+    SmallInteger.prototype.shiftLeft = BigInteger.prototype.shiftLeft;
+
+    BigInteger.prototype.shiftRight = function (n) {
+        var remQuo;
+        if (!shift_isSmall(n)) {
+            throw new Error(String(n) + " is too large for shifting.");
+        }
+        n = +n;
+        if (n < 0) return this.shiftLeft(-n);
+        var result = this;
+        while (n >= powers2Length) {
+            if (result.isZero()) return result;
+            remQuo = divModAny(result, highestPower2);
+            result = remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
+            n -= powers2Length - 1;
+        }
+        remQuo = divModAny(result, powersOfTwo[n]);
+        return remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
+    };
+    SmallInteger.prototype.shiftRight = BigInteger.prototype.shiftRight;
+
+    function bitwise(x, y, fn) {
+        y = parseValue(y);
+        var xSign = x.isNegative(), ySign = y.isNegative();
+        var xRem = xSign ? x.not() : x,
+            yRem = ySign ? y.not() : y;
+        var xDigit = 0, yDigit = 0;
+        var xDivMod = null, yDivMod = null;
+        var result = [];
+        while (!xRem.isZero() || !yRem.isZero()) {
+            xDivMod = divModAny(xRem, highestPower2);
+            xDigit = xDivMod[1].toJSNumber();
+            if (xSign) {
+                xDigit = highestPower2 - 1 - xDigit; // two's complement for negative numbers
+            }
+
+            yDivMod = divModAny(yRem, highestPower2);
+            yDigit = yDivMod[1].toJSNumber();
+            if (ySign) {
+                yDigit = highestPower2 - 1 - yDigit; // two's complement for negative numbers
+            }
+
+            xRem = xDivMod[0];
+            yRem = yDivMod[0];
+            result.push(fn(xDigit, yDigit));
+        }
+        var sum = fn(xSign ? 1 : 0, ySign ? 1 : 0) !== 0 ? bigInt(-1) : bigInt(0);
+        for (var i = result.length - 1; i >= 0; i -= 1) {
+            sum = sum.multiply(highestPower2).add(bigInt(result[i]));
+        }
+        return sum;
+    }
+
+    BigInteger.prototype.not = function () {
+        return this.negate().prev();
+    };
+    SmallInteger.prototype.not = BigInteger.prototype.not;
+
+    BigInteger.prototype.and = function (n) {
+        return bitwise(this, n, function (a, b) { return a & b; });
+    };
+    SmallInteger.prototype.and = BigInteger.prototype.and;
+
+    BigInteger.prototype.or = function (n) {
+        return bitwise(this, n, function (a, b) { return a | b; });
+    };
+    SmallInteger.prototype.or = BigInteger.prototype.or;
+
+    BigInteger.prototype.xor = function (n) {
+        return bitwise(this, n, function (a, b) { return a ^ b; });
+    };
+    SmallInteger.prototype.xor = BigInteger.prototype.xor;
+
+    var LOBMASK_I = 1 << 30, LOBMASK_BI = (BASE & -BASE) * (BASE & -BASE) | LOBMASK_I;
+    function roughLOB(n) { // get lowestOneBit (rough)
+        // SmallInteger: return Min(lowestOneBit(n), 1 << 30)
+        // BigInteger: return Min(lowestOneBit(n), 1 << 14) [BASE=1e7]
+        var v = n.value, x = typeof v === "number" ? v | LOBMASK_I : v[0] + v[1] * BASE | LOBMASK_BI;
+        return x & -x;
+    }
+
+    function max(a, b) {
+        a = parseValue(a);
+        b = parseValue(b);
+        return a.greater(b) ? a : b;
+    }
+    function min(a, b) {
+        a = parseValue(a);
+        b = parseValue(b);
+        return a.lesser(b) ? a : b;
+    }
+    function gcd(a, b) {
+        a = parseValue(a).abs();
+        b = parseValue(b).abs();
+        if (a.equals(b)) return a;
+        if (a.isZero()) return b;
+        if (b.isZero()) return a;
+        var c = Integer[1], d, t;
+        while (a.isEven() && b.isEven()) {
+            d = Math.min(roughLOB(a), roughLOB(b));
+            a = a.divide(d);
+            b = b.divide(d);
+            c = c.multiply(d);
+        }
+        while (a.isEven()) {
+            a = a.divide(roughLOB(a));
+        }
+        do {
+            while (b.isEven()) {
+                b = b.divide(roughLOB(b));
+            }
+            if (a.greater(b)) {
+                t = b; b = a; a = t;
+            }
+            b = b.subtract(a);
+        } while (!b.isZero());
+        return c.isUnit() ? a : a.multiply(c);
+    }
+    function lcm(a, b) {
+        a = parseValue(a).abs();
+        b = parseValue(b).abs();
+        return a.divide(gcd(a, b)).multiply(b);
+    }
+    function randBetween(a, b) {
+        a = parseValue(a);
+        b = parseValue(b);
+        var low = min(a, b), high = max(a, b);
+        var range = high.subtract(low).add(1);
+        if (range.isSmall) return low.add(Math.floor(Math.random() * range));
+        var length = range.value.length - 1;
+        var result = [], restricted = true;
+        for (var i = length; i >= 0; i--) {
+            var top = restricted ? range.value[i] : BASE;
+            var digit = truncate(Math.random() * top);
+            result.unshift(digit);
+            if (digit < top) restricted = false;
+        }
+        result = arrayToSmall(result);
+        return low.add(typeof result === "number" ? new SmallInteger(result) : new BigInteger(result, false));
+    }
+    var parseBase = function (text, base) {
+        var length = text.length;
+		var i;
+		var absBase = Math.abs(base);
+		for(var i = 0; i < length; i++) {
+			var c = text[i].toLowerCase();
+			if(c === "-") continue;
+			if(/[a-z0-9]/.test(c)) {
+			    if(/[0-9]/.test(c) && +c >= absBase) {
+					if(c === "1" && absBase === 1) continue;
+                    throw new Error(c + " is not a valid digit in base " + base + ".");
+				} else if(c.charCodeAt(0) - 87 >= absBase) {
+					throw new Error(c + " is not a valid digit in base " + base + ".");
+				}
+			}
+		}
+        if (2 <= base && base <= 36) {
+            if (length <= LOG_MAX_INT / Math.log(base)) {
+				var result = parseInt(text, base);
+				if(isNaN(result)) {
+					throw new Error(c + " is not a valid digit in base " + base + ".");
+				}
+                return new SmallInteger(parseInt(text, base));
+            }
+        }
+        base = parseValue(base);
+        var digits = [];
+        var isNegative = text[0] === "-";
+        for (i = isNegative ? 1 : 0; i < text.length; i++) {
+            var c = text[i].toLowerCase(),
+                charCode = c.charCodeAt(0);
+            if (48 <= charCode && charCode <= 57) digits.push(parseValue(c));
+            else if (97 <= charCode && charCode <= 122) digits.push(parseValue(c.charCodeAt(0) - 87));
+            else if (c === "<") {
+                var start = i;
+                do { i++; } while (text[i] !== ">");
+                digits.push(parseValue(text.slice(start + 1, i)));
+            }
+            else throw new Error(c + " is not a valid character");
+        }
+        return parseBaseFromArray(digits, base, isNegative);
+    };
+
+    function parseBaseFromArray(digits, base, isNegative) {
+        var val = Integer[0], pow = Integer[1], i;
+        for (i = digits.length - 1; i >= 0; i--) {
+            val = val.add(digits[i].times(pow));
+            pow = pow.times(base);
+        }
+        return isNegative ? val.negate() : val;
+    }
+
+    function stringify(digit) {
+        var v = digit.value;
+        if (typeof v === "number") v = [v];
+        if (v.length === 1 && v[0] <= 35) {
+            return "0123456789abcdefghijklmnopqrstuvwxyz".charAt(v[0]);
+        }
+        return "<" + v + ">";
+    }
+    function toBase(n, base) {
+        base = bigInt(base);
+        if (base.isZero()) {
+            if (n.isZero()) return "0";
+            throw new Error("Cannot convert nonzero numbers to base 0.");
+        }
+        if (base.equals(-1)) {
+            if (n.isZero()) return "0";
+            if (n.isNegative()) return new Array(1 - n).join("10");
+            return "1" + new Array(+n).join("01");
+        }
+        var minusSign = "";
+        if (n.isNegative() && base.isPositive()) {
+            minusSign = "-";
+            n = n.abs();
+        }
+        if (base.equals(1)) {
+            if (n.isZero()) return "0";
+            return minusSign + new Array(+n + 1).join(1);
+        }
+        var out = [];
+        var left = n, divmod;
+        while (left.isNegative() || left.compareAbs(base) >= 0) {
+            divmod = left.divmod(base);
+            left = divmod.quotient;
+            var digit = divmod.remainder;
+            if (digit.isNegative()) {
+                digit = base.minus(digit).abs();
+                left = left.next();
+            }
+            out.push(stringify(digit));
+        }
+        out.push(stringify(left));
+        return minusSign + out.reverse().join("");
+    }
+
+    BigInteger.prototype.toString = function (radix) {
+        if (radix === undefined) radix = 10;
+        if (radix !== 10) return toBase(this, radix);
+        var v = this.value, l = v.length, str = String(v[--l]), zeros = "0000000", digit;
+        while (--l >= 0) {
+            digit = String(v[l]);
+            str += zeros.slice(digit.length) + digit;
+        }
+        var sign = this.sign ? "-" : "";
+        return sign + str;
+    };
+
+    SmallInteger.prototype.toString = function (radix) {
+        if (radix === undefined) radix = 10;
+        if (radix != 10) return toBase(this, radix);
+        return String(this.value);
+    };
+    BigInteger.prototype.toJSON = SmallInteger.prototype.toJSON = function() { return this.toString(); }
+
+    BigInteger.prototype.valueOf = function () {
+        return +this.toString();
+    };
+    BigInteger.prototype.toJSNumber = BigInteger.prototype.valueOf;
+
+    SmallInteger.prototype.valueOf = function () {
+        return this.value;
+    };
+    SmallInteger.prototype.toJSNumber = SmallInteger.prototype.valueOf;
+
+    function parseStringValue(v) {
+            if (isPrecise(+v)) {
+                var x = +v;
+                if (x === truncate(x))
+                    return new SmallInteger(x);
+                throw "Invalid integer: " + v;
+            }
+            var sign = v[0] === "-";
+            if (sign) v = v.slice(1);
+            var split = v.split(/e/i);
+            if (split.length > 2) throw new Error("Invalid integer: " + split.join("e"));
+            if (split.length === 2) {
+                var exp = split[1];
+                if (exp[0] === "+") exp = exp.slice(1);
+                exp = +exp;
+                if (exp !== truncate(exp) || !isPrecise(exp)) throw new Error("Invalid integer: " + exp + " is not a valid exponent.");
+                var text = split[0];
+                var decimalPlace = text.indexOf(".");
+                if (decimalPlace >= 0) {
+                    exp -= text.length - decimalPlace - 1;
+                    text = text.slice(0, decimalPlace) + text.slice(decimalPlace + 1);
+                }
+                if (exp < 0) throw new Error("Cannot include negative exponent part for integers");
+                text += (new Array(exp + 1)).join("0");
+                v = text;
+            }
+            var isValid = /^([0-9][0-9]*)$/.test(v);
+            if (!isValid) throw new Error("Invalid integer: " + v);
+            var r = [], max = v.length, l = LOG_BASE, min = max - l;
+            while (max > 0) {
+                r.push(+v.slice(min, max));
+                min -= l;
+                if (min < 0) min = 0;
+                max -= l;
+            }
+            trim(r);
+            return new BigInteger(r, sign);
+    }
+
+    function parseNumberValue(v) {
+        if (isPrecise(v)) {
+            if (v !== truncate(v)) throw new Error(v + " is not an integer.");
+            return new SmallInteger(v);
+        }
+        return parseStringValue(v.toString());
+    }
+
+    function parseValue(v) {
+        if (typeof v === "number") {
+            return parseNumberValue(v);
+        }
+        if (typeof v === "string") {
+            return parseStringValue(v);
+        }
+        return v;
+    }
+    // Pre-define numbers in range [-999,999]
+    for (var i = 0; i < 1000; i++) {
+        Integer[i] = new SmallInteger(i);
+        if (i > 0) Integer[-i] = new SmallInteger(-i);
+    }
+    // Backwards compatibility
+    Integer.one = Integer[1];
+    Integer.zero = Integer[0];
+    Integer.minusOne = Integer[-1];
+    Integer.max = max;
+    Integer.min = min;
+    Integer.gcd = gcd;
+    Integer.lcm = lcm;
+    Integer.isInstance = function (x) { return x instanceof BigInteger || x instanceof SmallInteger; };
+    Integer.randBetween = randBetween;
+
+    Integer.fromArray = function (digits, base, isNegative) {
+        return parseBaseFromArray(digits.map(parseValue), parseValue(base || 10), isNegative);
+    };
+
+    return Integer;
+})();
+
+// Node.js check
+if (typeof module !== "undefined" && module.hasOwnProperty("exports")) {
+    module.exports = bigInt;
+}
+
+//amd check
+if ( typeof define === "function" && define.amd ) {
+  define( "big-integer", [], function() {
+    return bigInt;
+  });
+}
+
+},{}],4:[function(require,module,exports){
+
+},{}],5:[function(require,module,exports){
+var basex = require('base-x')
+var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
+
+module.exports = basex(ALPHABET)
+
+},{"base-x":1}],6:[function(require,module,exports){
+'use strict'
+
+var base58 = require('bs58')
+var Buffer = require('safe-buffer').Buffer
+
+module.exports = function (checksumFn) {
+  // Encode a buffer as a base58-check encoded string
+  function encode (payload) {
+    var checksum = checksumFn(payload)
+
+    return base58.encode(Buffer.concat([
+      payload,
+      checksum
+    ], payload.length + 4))
+  }
+
+  function decodeRaw (buffer) {
+    var payload = buffer.slice(0, -4)
+    var checksum = buffer.slice(-4)
+    var newChecksum = checksumFn(payload)
+
+    if (checksum[0] ^ newChecksum[0] |
+        checksum[1] ^ newChecksum[1] |
+        checksum[2] ^ newChecksum[2] |
+        checksum[3] ^ newChecksum[3]) return
+
+    return payload
+  }
+
+  // Decode a base58-check encoded string to a buffer, no result if checksum is wrong
+  function decodeUnsafe (string) {
+    var buffer = base58.decodeUnsafe(string)
+    if (!buffer) return
+
+    return decodeRaw(buffer)
+  }
+
+  function decode (string) {
+    var buffer = base58.decode(string)
+    var payload = decodeRaw(buffer, checksumFn)
+    if (!payload) throw new Error('Invalid checksum')
+    return payload
+  }
+
+  return {
+    encode: encode,
+    decode: decode,
+    decodeUnsafe: decodeUnsafe
+  }
+}
+
+},{"bs58":5,"safe-buffer":40}],7:[function(require,module,exports){
+'use strict'
+
+var createHash = require('create-hash')
+var bs58checkBase = require('./base')
+
+// SHA256(SHA256(buffer))
+function sha256x2 (buffer) {
+  var tmp = createHash('sha256').update(buffer).digest()
+  return createHash('sha256').update(tmp).digest()
+}
+
+module.exports = bs58checkBase(sha256x2)
+
+},{"./base":6,"create-hash":15}],8:[function(require,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <https://feross.org>
+ * @license  MIT
+ */
+/* eslint-disable no-proto */
+
+'use strict'
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+
+var K_MAX_LENGTH = 0x7fffffff
+exports.kMaxLength = K_MAX_LENGTH
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Print warning and recommend using `buffer` v4.x which has an Object
+ *               implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * We report that the browser does not support typed arrays if the are not subclassable
+ * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
+ * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
+ * for __proto__ and has a buggy typed array implementation.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+
+if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
+    typeof console.error === 'function') {
+  console.error(
+    'This browser lacks typed array (Uint8Array) support which is required by ' +
+    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
+  )
+}
+
+function typedArraySupport () {
+  // Can typed array instances can be augmented?
+  try {
+    var arr = new Uint8Array(1)
+    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
+    return arr.foo() === 42
+  } catch (e) {
+    return false
+  }
+}
+
+function createBuffer (length) {
+  if (length > K_MAX_LENGTH) {
+    throw new RangeError('Invalid typed array length')
+  }
+  // Return an augmented `Uint8Array` instance
+  var buf = new Uint8Array(length)
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+/**
+ * The Buffer constructor returns instances of `Uint8Array` that have their
+ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+ * returns a single octet.
+ *
+ * The `Uint8Array` prototype remains unmodified.
+ */
+
+function Buffer (arg, encodingOrOffset, length) {
+  // Common case.
+  if (typeof arg === 'number') {
+    if (typeof encodingOrOffset === 'string') {
+      throw new Error(
+        'If encoding is specified then the first argument must be a string'
+      )
+    }
+    return allocUnsafe(arg)
+  }
+  return from(arg, encodingOrOffset, length)
+}
+
+// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+if (typeof Symbol !== 'undefined' && Symbol.species &&
+    Buffer[Symbol.species] === Buffer) {
+  Object.defineProperty(Buffer, Symbol.species, {
+    value: null,
+    configurable: true,
+    enumerable: false,
+    writable: false
+  })
+}
+
+Buffer.poolSize = 8192 // not used by this implementation
+
+function from (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (isArrayBuffer(value)) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return fromObject(value)
+}
+
+/**
+ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
+ * if value is a number.
+ * Buffer.from(str[, encoding])
+ * Buffer.from(array)
+ * Buffer.from(buffer)
+ * Buffer.from(arrayBuffer[, byteOffset[, length]])
+ **/
+Buffer.from = function (value, encodingOrOffset, length) {
+  return from(value, encodingOrOffset, length)
+}
+
+// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
+// https://github.com/feross/buffer/pull/148
+Buffer.prototype.__proto__ = Uint8Array.prototype
+Buffer.__proto__ = Uint8Array
+
+function assertSize (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('"size" argument must be a number')
+  } else if (size < 0) {
+    throw new RangeError('"size" argument must not be negative')
+  }
+}
+
+function alloc (size, fill, encoding) {
+  assertSize(size)
+  if (size <= 0) {
+    return createBuffer(size)
+  }
+  if (fill !== undefined) {
+    // Only pay attention to encoding if it's a string. This
+    // prevents accidentally sending in a number that would
+    // be interpretted as a start offset.
+    return typeof encoding === 'string'
+      ? createBuffer(size).fill(fill, encoding)
+      : createBuffer(size).fill(fill)
+  }
+  return createBuffer(size)
+}
+
+/**
+ * Creates a new filled Buffer instance.
+ * alloc(size[, fill[, encoding]])
+ **/
+Buffer.alloc = function (size, fill, encoding) {
+  return alloc(size, fill, encoding)
+}
+
+function allocUnsafe (size) {
+  assertSize(size)
+  return createBuffer(size < 0 ? 0 : checked(size) | 0)
+}
+
+/**
+ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
+ * */
+Buffer.allocUnsafe = function (size) {
+  return allocUnsafe(size)
+}
+/**
+ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
+ */
+Buffer.allocUnsafeSlow = function (size) {
+  return allocUnsafe(size)
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  var length = byteLength(string, encoding) | 0
+  var buf = createBuffer(length)
+
+  var actual = buf.write(string, encoding)
+
+  if (actual !== length) {
+    // Writing a hex string, for example, that contains invalid characters will
+    // cause everything after the first invalid character to be ignored. (e.g.
+    // 'abxxcd' will be treated as 'ab')
+    buf = buf.slice(0, actual)
+  }
+
+  return buf
+}
+
+function fromArrayLike (array) {
+  var length = array.length < 0 ? 0 : checked(array.length) | 0
+  var buf = createBuffer(length)
+  for (var i = 0; i < length; i += 1) {
+    buf[i] = array[i] & 255
+  }
+  return buf
+}
+
+function fromArrayBuffer (array, byteOffset, length) {
+  if (byteOffset < 0 || array.byteLength < byteOffset) {
+    throw new RangeError('\'offset\' is out of bounds')
+  }
+
+  if (array.byteLength < byteOffset + (length || 0)) {
+    throw new RangeError('\'length\' is out of bounds')
+  }
+
+  var buf
+  if (byteOffset === undefined && length === undefined) {
+    buf = new Uint8Array(array)
+  } else if (length === undefined) {
+    buf = new Uint8Array(array, byteOffset)
+  } else {
+    buf = new Uint8Array(array, byteOffset, length)
+  }
+
+  // Return an augmented `Uint8Array` instance
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+function fromObject (obj) {
+  if (Buffer.isBuffer(obj)) {
+    var len = checked(obj.length) | 0
+    var buf = createBuffer(len)
+
+    if (buf.length === 0) {
+      return buf
+    }
+
+    obj.copy(buf, 0, 0, len)
+    return buf
+  }
+
+  if (obj) {
+    if (isArrayBufferView(obj) || 'length' in obj) {
+      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
+        return createBuffer(0)
+      }
+      return fromArrayLike(obj)
+    }
+
+    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
+      return fromArrayLike(obj.data)
+    }
+  }
+
+  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
+}
+
+function checked (length) {
+  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= K_MAX_LENGTH) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
+  }
+  return length | 0
+}
+
+function SlowBuffer (length) {
+  if (+length != length) { // eslint-disable-line eqeqeq
+    length = 0
+  }
+  return Buffer.alloc(+length)
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return b != null && b._isBuffer === true
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i]
+      y = b[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'latin1':
+    case 'binary':
+    case 'base64':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, length) {
+  if (!Array.isArray(list)) {
+    throw new TypeError('"list" argument must be an Array of Buffers')
+  }
+
+  if (list.length === 0) {
+    return Buffer.alloc(0)
+  }
+
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; ++i) {
+      length += list[i].length
+    }
+  }
+
+  var buffer = Buffer.allocUnsafe(length)
+  var pos = 0
+  for (i = 0; i < list.length; ++i) {
+    var buf = list[i]
+    if (!Buffer.isBuffer(buf)) {
+      throw new TypeError('"list" argument must be an Array of Buffers')
+    }
+    buf.copy(buffer, pos)
+    pos += buf.length
+  }
+  return buffer
+}
+
+function byteLength (string, encoding) {
+  if (Buffer.isBuffer(string)) {
+    return string.length
+  }
+  if (isArrayBufferView(string) || isArrayBuffer(string)) {
+    return string.byteLength
+  }
+  if (typeof string !== 'string') {
+    string = '' + string
+  }
+
+  var len = string.length
+  if (len === 0) return 0
+
+  // Use a for loop to avoid recursion
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'ascii':
+      case 'latin1':
+      case 'binary':
+        return len
+      case 'utf8':
+      case 'utf-8':
+      case undefined:
+        return utf8ToBytes(string).length
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return len * 2
+      case 'hex':
+        return len >>> 1
+      case 'base64':
+        return base64ToBytes(string).length
+      default:
+        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+Buffer.byteLength = byteLength
+
+function slowToString (encoding, start, end) {
+  var loweredCase = false
+
+  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
+  // property of a typed array.
+
+  // This behaves neither like String nor Uint8Array in that we set start/end
+  // to their upper/lower bounds if the value passed is out of range.
+  // undefined is handled specially as per ECMA-262 6th Edition,
+  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
+  if (start === undefined || start < 0) {
+    start = 0
+  }
+  // Return early if start > this.length. Done here to prevent potential uint32
+  // coercion fail below.
+  if (start > this.length) {
+    return ''
+  }
+
+  if (end === undefined || end > this.length) {
+    end = this.length
+  }
+
+  if (end <= 0) {
+    return ''
+  }
+
+  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
+  end >>>= 0
+  start >>>= 0
+
+  if (end <= start) {
+    return ''
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Slice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
+// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
+// reliably in a browserify context because there could be multiple different
+// copies of the 'buffer' package in use. This method works even for Buffer
+// instances that were created from another copy of the `buffer` package.
+// See: https://github.com/feross/buffer/issues/154
+Buffer.prototype._isBuffer = true
+
+function swap (b, n, m) {
+  var i = b[n]
+  b[n] = b[m]
+  b[m] = i
+}
+
+Buffer.prototype.swap16 = function swap16 () {
+  var len = this.length
+  if (len % 2 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 16-bits')
+  }
+  for (var i = 0; i < len; i += 2) {
+    swap(this, i, i + 1)
+  }
+  return this
+}
+
+Buffer.prototype.swap32 = function swap32 () {
+  var len = this.length
+  if (len % 4 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 32-bits')
+  }
+  for (var i = 0; i < len; i += 4) {
+    swap(this, i, i + 3)
+    swap(this, i + 1, i + 2)
+  }
+  return this
+}
+
+Buffer.prototype.swap64 = function swap64 () {
+  var len = this.length
+  if (len % 8 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 64-bits')
+  }
+  for (var i = 0; i < len; i += 8) {
+    swap(this, i, i + 7)
+    swap(this, i + 1, i + 6)
+    swap(this, i + 2, i + 5)
+    swap(this, i + 3, i + 4)
+  }
+  return this
+}
+
+Buffer.prototype.toString = function toString () {
+  var length = this.length
+  if (length === 0) return ''
+  if (arguments.length === 0) return utf8Slice(this, 0, length)
+  return slowToString.apply(this, arguments)
+}
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
+  if (!Buffer.isBuffer(target)) {
+    throw new TypeError('Argument must be a Buffer')
+  }
+
+  if (start === undefined) {
+    start = 0
+  }
+  if (end === undefined) {
+    end = target ? target.length : 0
+  }
+  if (thisStart === undefined) {
+    thisStart = 0
+  }
+  if (thisEnd === undefined) {
+    thisEnd = this.length
+  }
+
+  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
+    throw new RangeError('out of range index')
+  }
+
+  if (thisStart >= thisEnd && start >= end) {
+    return 0
+  }
+  if (thisStart >= thisEnd) {
+    return -1
+  }
+  if (start >= end) {
+    return 1
+  }
+
+  start >>>= 0
+  end >>>= 0
+  thisStart >>>= 0
+  thisEnd >>>= 0
+
+  if (this === target) return 0
+
+  var x = thisEnd - thisStart
+  var y = end - start
+  var len = Math.min(x, y)
+
+  var thisCopy = this.slice(thisStart, thisEnd)
+  var targetCopy = target.slice(start, end)
+
+  for (var i = 0; i < len; ++i) {
+    if (thisCopy[i] !== targetCopy[i]) {
+      x = thisCopy[i]
+      y = targetCopy[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
+// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
+//
+// Arguments:
+// - buffer - a Buffer to search
+// - val - a string, Buffer, or number
+// - byteOffset - an index into `buffer`; will be clamped to an int32
+// - encoding - an optional encoding, relevant is val is a string
+// - dir - true for indexOf, false for lastIndexOf
+function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
+  // Empty buffer means no match
+  if (buffer.length === 0) return -1
+
+  // Normalize byteOffset
+  if (typeof byteOffset === 'string') {
+    encoding = byteOffset
+    byteOffset = 0
+  } else if (byteOffset > 0x7fffffff) {
+    byteOffset = 0x7fffffff
+  } else if (byteOffset < -0x80000000) {
+    byteOffset = -0x80000000
+  }
+  byteOffset = +byteOffset  // Coerce to Number.
+  if (numberIsNaN(byteOffset)) {
+    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
+    byteOffset = dir ? 0 : (buffer.length - 1)
+  }
+
+  // Normalize byteOffset: negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
+  if (byteOffset >= buffer.length) {
+    if (dir) return -1
+    else byteOffset = buffer.length - 1
+  } else if (byteOffset < 0) {
+    if (dir) byteOffset = 0
+    else return -1
+  }
+
+  // Normalize val
+  if (typeof val === 'string') {
+    val = Buffer.from(val, encoding)
+  }
+
+  // Finally, search either indexOf (if dir is true) or lastIndexOf
+  if (Buffer.isBuffer(val)) {
+    // Special case: looking for empty string/buffer always fails
+    if (val.length === 0) {
+      return -1
+    }
+    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
+  } else if (typeof val === 'number') {
+    val = val & 0xFF // Search for a byte value [0-255]
+    if (typeof Uint8Array.prototype.indexOf === 'function') {
+      if (dir) {
+        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+      } else {
+        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+      }
+    }
+    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
+  var indexSize = 1
+  var arrLength = arr.length
+  var valLength = val.length
+
+  if (encoding !== undefined) {
+    encoding = String(encoding).toLowerCase()
+    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
+        encoding === 'utf16le' || encoding === 'utf-16le') {
+      if (arr.length < 2 || val.length < 2) {
+        return -1
+      }
+      indexSize = 2
+      arrLength /= 2
+      valLength /= 2
+      byteOffset /= 2
+    }
+  }
+
+  function read (buf, i) {
+    if (indexSize === 1) {
+      return buf[i]
+    } else {
+      return buf.readUInt16BE(i * indexSize)
+    }
+  }
+
+  var i
+  if (dir) {
+    var foundIndex = -1
+    for (i = byteOffset; i < arrLength; i++) {
+      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
+      } else {
+        if (foundIndex !== -1) i -= i - foundIndex
+        foundIndex = -1
+      }
+    }
+  } else {
+    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
+    for (i = byteOffset; i >= 0; i--) {
+      var found = true
+      for (var j = 0; j < valLength; j++) {
+        if (read(arr, i + j) !== read(val, j)) {
+          found = false
+          break
+        }
+      }
+      if (found) return i
+    }
+  }
+
+  return -1
+}
+
+Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
+  return this.indexOf(val, byteOffset, encoding) !== -1
+}
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+}
+
+Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; ++i) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (numberIsNaN(parsed)) return i
+    buf[offset + i] = parsed
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
+
+function latin1Write (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
+
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset >>> 0
+    if (isFinite(length)) {
+      length = length >>> 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  } else {
+    throw new Error(
+      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
+    )
+  }
+
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
+
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('Attempt to write outside buffer bounds')
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
+
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Write(this, string, offset, length)
+
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  end = Math.min(buf.length, end)
+  var res = []
+
+  var i = start
+  while (i < end) {
+    var firstByte = buf[i]
+    var codePoint = null
+    var bytesPerSequence = (firstByte > 0xEF) ? 4
+      : (firstByte > 0xDF) ? 3
+      : (firstByte > 0xBF) ? 2
+      : 1
+
+    if (i + bytesPerSequence <= end) {
+      var secondByte, thirdByte, fourthByte, tempCodePoint
+
+      switch (bytesPerSequence) {
+        case 1:
+          if (firstByte < 0x80) {
+            codePoint = firstByte
+          }
+          break
+        case 2:
+          secondByte = buf[i + 1]
+          if ((secondByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+            if (tempCodePoint > 0x7F) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 3:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 4:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          fourthByte = buf[i + 3]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+              codePoint = tempCodePoint
+            }
+          }
+      }
+    }
+
+    if (codePoint === null) {
+      // we did not generate a valid codePoint so insert a
+      // replacement char (U+FFFD) and advance only 1 byte
+      codePoint = 0xFFFD
+      bytesPerSequence = 1
+    } else if (codePoint > 0xFFFF) {
+      // encode to utf16 (surrogate pair dance)
+      codePoint -= 0x10000
+      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+      codePoint = 0xDC00 | codePoint & 0x3FF
+    }
+
+    res.push(codePoint)
+    i += bytesPerSequence
+  }
+
+  return decodeCodePointsArray(res)
+}
+
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000
+
+function decodeCodePointsArray (codePoints) {
+  var len = codePoints.length
+  if (len <= MAX_ARGUMENTS_LENGTH) {
+    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+  }
+
+  // Decode in chunks to avoid "call stack size exceeded".
+  var res = ''
+  var i = 0
+  while (i < len) {
+    res += String.fromCharCode.apply(
+      String,
+      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+    )
+  }
+  return res
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function latin1Slice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; ++i) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
+  }
+  return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf = this.subarray(start, end)
+  // Return an augmented `Uint8Array` instance
+  newBuf.__proto__ = Buffer.prototype
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset + 3] = (value >>> 24)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 1] = (value >>> 8)
+  this[offset] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 3] = (value >>> 24)
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+  if (offset < 0) throw new RangeError('Index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
+
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
+  }
+
+  var len = end - start
+  var i
+
+  if (this === target && start < targetStart && targetStart < end) {
+    // descending copy from end
+    for (i = len - 1; i >= 0; --i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else if (len < 1000) {
+    // ascending copy from start
+    for (i = 0; i < len; ++i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    Uint8Array.prototype.set.call(
+      target,
+      this.subarray(start, start + len),
+      targetStart
+    )
+  }
+
+  return len
+}
+
+// Usage:
+//    buffer.fill(number[, offset[, end]])
+//    buffer.fill(buffer[, offset[, end]])
+//    buffer.fill(string[, offset[, end]][, encoding])
+Buffer.prototype.fill = function fill (val, start, end, encoding) {
+  // Handle string cases:
+  if (typeof val === 'string') {
+    if (typeof start === 'string') {
+      encoding = start
+      start = 0
+      end = this.length
+    } else if (typeof end === 'string') {
+      encoding = end
+      end = this.length
+    }
+    if (val.length === 1) {
+      var code = val.charCodeAt(0)
+      if (code < 256) {
+        val = code
+      }
+    }
+    if (encoding !== undefined && typeof encoding !== 'string') {
+      throw new TypeError('encoding must be a string')
+    }
+    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
+      throw new TypeError('Unknown encoding: ' + encoding)
+    }
+  } else if (typeof val === 'number') {
+    val = val & 255
+  }
+
+  // Invalid ranges are not set to a default, so can range check early.
+  if (start < 0 || this.length < start || this.length < end) {
+    throw new RangeError('Out of range index')
+  }
+
+  if (end <= start) {
+    return this
+  }
+
+  start = start >>> 0
+  end = end === undefined ? this.length : end >>> 0
+
+  if (!val) val = 0
+
+  var i
+  if (typeof val === 'number') {
+    for (i = start; i < end; ++i) {
+      this[i] = val
+    }
+  } else {
+    var bytes = Buffer.isBuffer(val)
+      ? val
+      : new Buffer(val, encoding)
+    var len = bytes.length
+    for (i = 0; i < end - start; ++i) {
+      this[i + start] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
+
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = str.trim().replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+
+  for (var i = 0; i < length; ++i) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (!leadSurrogate) {
+        // no lead yet
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // valid lead
+        leadSurrogate = codePoint
+
+        continue
+      }
+
+      // 2 leads in a row
+      if (codePoint < 0xDC00) {
+        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+        leadSurrogate = codePoint
+        continue
+      }
+
+      // valid surrogate pair
+      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+    }
+
+    leadSurrogate = null
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x110000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; ++i) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+// ArrayBuffers from another context (i.e. an iframe) do not pass the `instanceof` check
+// but they should be treated as valid. See: https://github.com/feross/buffer/issues/166
+function isArrayBuffer (obj) {
+  return obj instanceof ArrayBuffer ||
+    (obj != null && obj.constructor != null && obj.constructor.name === 'ArrayBuffer' &&
+      typeof obj.byteLength === 'number')
+}
+
+// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
+function isArrayBufferView (obj) {
+  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+}
+
+function numberIsNaN (obj) {
+  return obj !== obj // eslint-disable-line no-self-compare
+}
+
+},{"base64-js":2,"ieee754":20}],9:[function(require,module,exports){
+/**
+ * @license
+ * https://github.com/bitcoincashjs/cashaddr
+ * Copyright (c) 2017-2018 Emilio Almansi
+ * Distributed under the MIT software license, see the accompanying
+ * file LICENSE or http://www.opensource.org/licenses/mit-license.php.
+ */
+
+'use strict';
+
+var validate = require('./validation').validate;
+
+/**
+ * Base32 encoding and decoding.
+ *
+ * @module base32
+ */
+
+/**
+ * Charset containing the 32 symbols used in the base32 encoding.
+ * @private
+ */
+var CHARSET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l';
+
+/**
+ * Inverted index mapping each symbol into its index within the charset.
+ * @private
+ */
+var CHARSET_INVERSE_INDEX = {
+  'q': 0, 'p': 1, 'z': 2, 'r': 3, 'y': 4, '9': 5, 'x': 6, '8': 7,
+  'g': 8, 'f': 9, '2': 10, 't': 11, 'v': 12, 'd': 13, 'w': 14, '0': 15,
+  's': 16, '3': 17, 'j': 18, 'n': 19, '5': 20, '4': 21, 'k': 22, 'h': 23,
+  'c': 24, 'e': 25, '6': 26, 'm': 27, 'u': 28, 'a': 29, '7': 30, 'l': 31,
+};
+
+/**
+ * Encodes the given array of 5-bit integers as a base32-encoded string.
+ *
+ * @static
+ * @param {Uint8Array} data Array of integers between 0 and 31 inclusive.
+ * @returns {string}
+ * @throws {ValidationError}
+ */
+function encode(data) {
+  validate(data instanceof Uint8Array, 'Invalid data: ' + data + '.');
+  var base32 = '';
+  for (var i = 0; i < data.length; ++i) {
+    var value = data[i];
+    validate(0 <= value && value < 32, 'Invalid value: ' + value + '.');
+    base32 += CHARSET[value];
+  }
+  return base32;
+}
+
+/**
+ * Decodes the given base32-encoded string into an array of 5-bit integers.
+ *
+ * @static
+ * @param {string} string
+ * @returns {Uint8Array}
+ * @throws {ValidationError}
+ */
+function decode(string) {
+  validate(typeof string === 'string', 'Invalid base32-encoded string: ' + string + '.');
+  var data = new Uint8Array(string.length);
+  for (var i = 0; i < string.length; ++i) {
+    var value = string[i];
+    validate(value in CHARSET_INVERSE_INDEX, 'Invalid value: ' + value + '.');
+    data[i] = CHARSET_INVERSE_INDEX[value];
+  }
+  return data;
+}
+
+module.exports = {
+  encode: encode,
+  decode: decode,
+};
+
+},{"./validation":12}],10:[function(require,module,exports){
+/**
+ * @license
+ * https://github.com/bitcoincashjs/cashaddr
+ * Copyright (c) 2017-2018 Emilio Almansi
+ * Distributed under the MIT software license, see the accompanying
+ * file LICENSE or http://www.opensource.org/licenses/mit-license.php.
+ */
+
+'use strict';
+
+var base32 = require('./base32');
+var bigInt = require('big-integer');
+var convertBits = require('./convertBits');
+var validation = require('./validation');
+var validate = validation.validate;
+
+/**
+ * Encoding and decoding of the new Cash Address format for Bitcoin Cash. <br />
+ * Compliant with the original cashaddr specification:
+ * {@link https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md}
+ * @module cashaddr
+ */
+
+/**
+ * Encodes a hash from a given type into a Bitcoin Cash address with the given prefix.
+ * 
+ * @static
+ * @param {string} prefix Network prefix. E.g.: 'bitcoincash'.
+ * @param {string} type Type of address to generate. Either 'P2PKH' or 'P2SH'.
+ * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers.
+ * @returns {string}
+ * @throws {ValidationError}
+ */
+function encode(prefix, type, hash) {
+  validate(typeof prefix === 'string' && isValidPrefix(prefix), 'Invalid prefix: ' + prefix + '.');
+  validate(typeof type === 'string', 'Invalid type: ' + type + '.');
+  validate(hash instanceof Uint8Array, 'Invalid hash: ' + hash + '.');
+  var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1));
+  var versionByte = getTypeBits(type) + getHashSizeBits(hash);
+  var payloadData = toUint5Array(concat(Uint8Array.of(versionByte), hash));
+  var checksumData = concat(concat(prefixData, payloadData), new Uint8Array(8));
+  var payload = concat(payloadData, checksumToUint5Array(polymod(checksumData)));
+  return prefix + ':' + base32.encode(payload);
+}
+
+/**
+ * Decodes the given address into its constituting prefix, type and hash. See [#encode()]{@link encode}.
+ * 
+ * @static
+ * @param {string} address Address to decode. E.g.: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a'.
+ * @returns {object}
+ * @throws {ValidationError}
+ */
+function decode(address) {
+  validate(typeof address === 'string' && hasSingleCase(address), 'Invalid address: ' + address + '.');
+  var pieces = address.toLowerCase().split(':');
+  validate(pieces.length === 2, 'Missing prefix: ' + address + '.');
+  var prefix = pieces[0];
+  var payload = base32.decode(pieces[1]);
+  validate(validChecksum(prefix, payload), 'Invalid checksum: ' + address + '.');
+  var payloadData = fromUint5Array(payload.slice(0, -8));
+  var versionByte = payloadData[0];
+  var hash = payloadData.slice(1);
+  validate(getHashSize(versionByte) === hash.length * 8, 'Invalid hash size: ' + address + '.');
+  var type = getType(versionByte);
+  return {
+    prefix: prefix,
+    type: type,
+    hash: hash,
+  };
+}
+
+/**
+ * Error thrown when encoding or decoding fail due to invalid input.
+ *
+ * @constructor ValidationError
+ * @param {string} message Error description.
+ */
+var ValidationError = validation.ValidationError;
+
+/**
+ * Valid address prefixes.
+ *
+ * @private
+ */
+var VALID_PREFIXES = ['bitcoincash', 'bchtest', 'bchreg'];
+
+/**
+ * Checks whether a string is a valid prefix; ie., it has a single letter case
+ * and is one of 'bitcoincash', 'bchtest', or 'bchreg'.
+ *
+ * @private
+ * @param {string} prefix 
+ * @returns {boolean}
+ */
+function isValidPrefix(prefix) {
+  return hasSingleCase(prefix) && VALID_PREFIXES.indexOf(prefix.toLowerCase()) !== -1;
+}
+
+/**
+ * Derives an array from the given prefix to be used in the computation
+ * of the address' checksum.
+ *
+ * @private
+ * @param {string} prefix Network prefix. E.g.: 'bitcoincash'. 
+ * @returns {Uint8Array}
+ */
+function prefixToUint5Array(prefix) {
+  var result = new Uint8Array(prefix.length);
+  for (var i = 0; i < prefix.length; ++i) {
+    result[i] = prefix[i].charCodeAt(0) & 31;
+  }
+  return result;
+}
+
+/**
+ * Returns an array representation of the given checksum to be encoded
+ * within the address' payload.
+ *
+ * @private
+ * @param {BigInteger} checksum Computed checksum.
+ * @returns {Uint8Array}
+ */
+function checksumToUint5Array(checksum) {
+  var result = new Uint8Array(8);
+  for (var i = 0; i < 8; ++i) {
+    result[7 - i] = checksum.and(31).toJSNumber();
+    checksum = checksum.shiftRight(5);
+  }
+  return result;
+}
+
+/**
+ * Returns the bit representation of the given type within the version
+ * byte.
+ *
+ * @private
+ * @param {string} type Address type. Either 'P2PKH' or 'P2SH'.
+ * @returns {number}
+ * @throws {ValidationError}
+ */
+function getTypeBits(type) {
+  switch (type) {
+  case 'P2PKH':
+    return 0;
+  case 'P2SH':
+    return 8;
+  default:
+    throw new ValidationError('Invalid type: ' + type + '.');
+  }
+}
+
+/**
+ * Retrieves the address type from its bit representation within the
+ * version byte.
+ *
+ * @private
+ * @param {number} versionByte
+ * @returns {string}
+ * @throws {ValidationError}
+ */
+function getType(versionByte) {
+  switch (versionByte & 120) {
+  case 0:
+    return 'P2PKH';
+  case 8:
+    return 'P2SH';
+  default:
+    throw new ValidationError('Invalid address type in version byte: ' + versionByte + '.');
+  }
+}
+
+/**
+ * Returns the bit representation of the length in bits of the given
+ * hash within the version byte.
+ *
+ * @private
+ * @param {Uint8Array} hash Hash to encode represented as an array of 8-bit integers.
+ * @returns {number}
+ * @throws {ValidationError}
+ */
+function getHashSizeBits(hash) {
+  switch (hash.length * 8) {
+  case 160:
+    return 0;
+  case 192:
+    return 1;
+  case 224:
+    return 2;
+  case 256:
+    return 3;
+  case 320:
+    return 4;
+  case 384:
+    return 5;
+  case 448:
+    return 6;
+  case 512:
+    return 7;
+  default:
+    throw new ValidationError('Invalid hash size: ' + hash.length + '.');
+  }
+}
+
+/**
+ * Retrieves the the length in bits of the encoded hash from its bit
+ * representation within the version byte.
+ *
+ * @private
+ * @param {number} versionByte
+ * @returns {number}
+ */
+function getHashSize(versionByte) {
+  switch (versionByte & 7) {
+  case 0:
+    return 160;
+  case 1:
+    return 192;
+  case 2:
+    return 224;
+  case 3:
+    return 256;
+  case 4:
+    return 320;
+  case 5:
+    return 384;
+  case 6:
+    return 448;
+  case 7:
+    return 512;
+  }
+}
+
+/**
+ * Converts an array of 8-bit integers into an array of 5-bit integers,
+ * right-padding with zeroes if necessary.
+ *
+ * @private
+ * @param {Uint8Array} data
+ * @returns {Uint8Array}
+ */
+function toUint5Array(data) {
+  return convertBits(data, 8, 5);
+}
+
+/**
+ * Converts an array of 5-bit integers back into an array of 8-bit integers,
+ * removing extra zeroes left from padding if necessary.
+ * Throws a {@link ValidationError} if input is not a zero-padded array of 8-bit integers.
+ *
+ * @private
+ * @param {Uint8Array} data
+ * @returns {Uint8Array}
+ * @throws {ValidationError}
+ */
+function fromUint5Array(data) {
+  return convertBits(data, 5, 8, true);
+}
+
+/**
+ * Returns the concatenation a and b.
+ *
+ * @private
+ * @param {Uint8Array} a 
+ * @param {Uint8Array} b 
+ * @returns {Uint8Array}
+ * @throws {ValidationError}
+ */
+function concat(a, b) {
+  var ab = new Uint8Array(a.length + b.length);
+  ab.set(a);
+  ab.set(b, a.length);
+  return ab;
+}
+
+/**
+ * Computes a checksum from the given input data as specified for the CashAddr
+ * format: https://github.com/Bitcoin-UAHF/spec/blob/master/cashaddr.md.
+ *
+ * @private
+ * @param {Uint8Array} data Array of 5-bit integers over which the checksum is to be computed.
+ * @returns {BigInteger}
+ */
+function polymod(data) {
+  var GENERATOR = [0x98f2bc8e61, 0x79b76d99e2, 0xf33e5fb3c4, 0xae2eabe2a8, 0x1e4f43e470];
+  var checksum = bigInt(1);
+  for (var i = 0; i < data.length; ++i) {
+    var value = data[i];
+    var topBits = checksum.shiftRight(35);
+    checksum = checksum.and(0x07ffffffff).shiftLeft(5).xor(value);
+    for (var j = 0; j < GENERATOR.length; ++j) {
+      if (topBits.shiftRight(j).and(1).equals(1)) {
+        checksum = checksum.xor(GENERATOR[j]);
+      }
+    }
+  }
+  return checksum.xor(1);
+}
+
+/**
+ * Verify that the payload has not been corrupted by checking that the
+ * checksum is valid.
+ * 
+ * @private
+ * @param {string} prefix Network prefix. E.g.: 'bitcoincash'.
+ * @param {Uint8Array} payload Array of 5-bit integers containing the address' payload.
+ * @returns {boolean}
+ */
+function validChecksum(prefix, payload) {
+  var prefixData = concat(prefixToUint5Array(prefix), new Uint8Array(1));
+  var checksumData = concat(prefixData, payload);
+  return polymod(checksumData).equals(0);
+}
+
+/**
+ * Returns true if, and only if, the given string contains either uppercase
+ * or lowercase letters, but not both.
+ *
+ * @private
+ * @param {string} string Input string.
+ * @returns {boolean}
+ */
+function hasSingleCase(string) {
+  return string === string.toLowerCase() || string === string.toUpperCase();
+}
+
+module.exports = {
+  encode: encode,
+  decode: decode,
+  ValidationError: ValidationError,
+};
+
+},{"./base32":9,"./convertBits":11,"./validation":12,"big-integer":3}],11:[function(require,module,exports){
+// Copyright (c) 2017-2018 Emilio Almansi
+// Copyright (c) 2017 Pieter Wuille
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+'use strict';
+
+var validate = require('./validation').validate;
+
+/**
+ * Converts an array of integers made up of 'from' bits into an
+ * array of integers made up of 'to' bits. The output array is
+ * zero-padded if necessary, unless strict mode is true.
+ * Throws a {@link ValidationError} if input is invalid.
+ * Original by Pieter Wuille: https://github.com/sipa/bech32.
+ *
+ * @param {Uint8Array} data Array of integers made up of 'from' bits.
+ * @param {number} from Length in bits of elements in the input array.
+ * @param {number} to Length in bits of elements in the output array.
+ * @param {bool} strictMode Require the conversion to be completed without padding.
+ * @returns {Uint8Array}
+ */
+module.exports = function(data, from, to, strictMode) {
+  var length = strictMode
+    ? Math.floor(data.length * from / to)
+    : Math.ceil(data.length * from / to);
+  var mask = (1 << to) - 1;
+  var result = new Uint8Array(length);
+  var index = 0;
+  var accumulator = 0;
+  var bits = 0;
+  for (var i = 0; i < data.length; ++i) {
+    var value = data[i];
+    validate(0 <= value && (value >> from) === 0, 'Invalid value: ' + value + '.');
+    accumulator = (accumulator << from) | value;
+    bits += from;
+    while (bits >= to) {
+      bits -= to;
+      result[index] = (accumulator >> bits) & mask;
+      ++index;
+    }
+  }
+  if (!strictMode) {
+    if (bits > 0) {
+      result[index] = (accumulator << (to - bits)) & mask;
+      ++index;
+    }
+  } else {
+    validate(
+      bits < from && ((accumulator << (to - bits)) & mask) === 0,
+      'Input cannot be converted to ' + to + ' bits without padding, but strict mode was used.'
+    );
+  }
+  return result;
+};
+
+},{"./validation":12}],12:[function(require,module,exports){
+/**
+ * @license
+ * https://github.com/bitcoincashjs/cashaddr
+ * Copyright (c) 2017-2018 Emilio Almansi
+ * Distributed under the MIT software license, see the accompanying
+ * file LICENSE or http://www.opensource.org/licenses/mit-license.php.
+ */
+
+'use strict';
+
+/**
+ * Validation utility.
+ *
+ * @module validation
+ */
+
+/**
+ * Error thrown when encoding or decoding fail due to invalid input.
+ *
+ * @constructor ValidationError
+ * @param {string} message Error description.
+ */
+function ValidationError(message) {
+  var error = new Error();
+  this.name = error.name = 'ValidationError';
+  this.message = error.message = message;
+  this.stack = error.stack;
+}
+
+ValidationError.prototype = Object.create(Error.prototype);
+
+/**
+ * Validates a given condition, throwing a {@link ValidationError} if
+ * the given condition does not hold.
+ *
+ * @static
+ * @param {boolean} condition Condition to validate.
+ * @param {string} message Error message in case the condition does not hold.
+ */
+function validate(condition, message) {
+  if (!condition) {
+    throw new ValidationError(message);
+  }
+}
+
+module.exports = {
+  ValidationError: ValidationError,
+  validate: validate,
+};
+
+},{}],13:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var Transform = require('stream').Transform
+var StringDecoder = require('string_decoder').StringDecoder
+var inherits = require('inherits')
+
+function CipherBase (hashMode) {
+  Transform.call(this)
+  this.hashMode = typeof hashMode === 'string'
+  if (this.hashMode) {
+    this[hashMode] = this._finalOrDigest
+  } else {
+    this.final = this._finalOrDigest
+  }
+  if (this._final) {
+    this.__final = this._final
+    this._final = null
+  }
+  this._decoder = null
+  this._encoding = null
+}
+inherits(CipherBase, Transform)
+
+CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
+  if (typeof data === 'string') {
+    data = Buffer.from(data, inputEnc)
+  }
+
+  var outData = this._update(data)
+  if (this.hashMode) return this
+
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc)
+  }
+
+  return outData
+}
+
+CipherBase.prototype.setAutoPadding = function () {}
+CipherBase.prototype.getAuthTag = function () {
+  throw new Error('trying to get auth tag in unsupported state')
+}
+
+CipherBase.prototype.setAuthTag = function () {
+  throw new Error('trying to set auth tag in unsupported state')
+}
+
+CipherBase.prototype.setAAD = function () {
+  throw new Error('trying to set aad in unsupported state')
+}
+
+CipherBase.prototype._transform = function (data, _, next) {
+  var err
+  try {
+    if (this.hashMode) {
+      this._update(data)
+    } else {
+      this.push(this._update(data))
+    }
+  } catch (e) {
+    err = e
+  } finally {
+    next(err)
+  }
+}
+CipherBase.prototype._flush = function (done) {
+  var err
+  try {
+    this.push(this.__final())
+  } catch (e) {
+    err = e
+  }
+
+  done(err)
+}
+CipherBase.prototype._finalOrDigest = function (outputEnc) {
+  var outData = this.__final() || Buffer.alloc(0)
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc, true)
+  }
+  return outData
+}
+
+CipherBase.prototype._toString = function (value, enc, fin) {
+  if (!this._decoder) {
+    this._decoder = new StringDecoder(enc)
+    this._encoding = enc
+  }
+
+  if (this._encoding !== enc) throw new Error('can\'t switch encodings')
+
+  var out = this._decoder.write(value)
+  if (fin) {
+    out += this._decoder.end()
+  }
+
+  return out
+}
+
+module.exports = CipherBase
+
+},{"inherits":21,"safe-buffer":40,"stream":49,"string_decoder":50}],14:[function(require,module,exports){
+(function (Buffer){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
+
+function isArray(arg) {
+  if (Array.isArray) {
+    return Array.isArray(arg);
+  }
+  return objectToString(arg) === '[object Array]';
+}
+exports.isArray = isArray;
+
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
+}
+exports.isBoolean = isBoolean;
+
+function isNull(arg) {
+  return arg === null;
+}
+exports.isNull = isNull;
+
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
+
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
+
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
+}
+exports.isSymbol = isSymbol;
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
+
+function isRegExp(re) {
+  return objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+exports.isObject = isObject;
+
+function isDate(d) {
+  return objectToString(d) === '[object Date]';
+}
+exports.isDate = isDate;
+
+function isError(e) {
+  return (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+exports.isFunction = isFunction;
+
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
+
+exports.isBuffer = Buffer.isBuffer;
+
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
+}
+
+}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
+},{"../../is-buffer/index.js":22}],15:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var inherits = require('inherits')
+var md5 = require('./md5')
+var RIPEMD160 = require('ripemd160')
+var sha = require('sha.js')
+
+var Base = require('cipher-base')
+
+function HashNoConstructor (hash) {
+  Base.call(this, 'digest')
+
+  this._hash = hash
+  this.buffers = []
+}
+
+inherits(HashNoConstructor, Base)
+
+HashNoConstructor.prototype._update = function (data) {
+  this.buffers.push(data)
+}
+
+HashNoConstructor.prototype._final = function () {
+  var buf = Buffer.concat(this.buffers)
+  var r = this._hash(buf)
+  this.buffers = null
+
+  return r
+}
+
+function Hash (hash) {
+  Base.call(this, 'digest')
+
+  this._hash = hash
+}
+
+inherits(Hash, Base)
+
+Hash.prototype._update = function (data) {
+  this._hash.update(data)
+}
+
+Hash.prototype._final = function () {
+  return this._hash.digest()
+}
+
+module.exports = function createHash (alg) {
+  alg = alg.toLowerCase()
+  if (alg === 'md5') return new HashNoConstructor(md5)
+  if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160())
+
+  return new Hash(sha(alg))
+}
+
+}).call(this,require("buffer").Buffer)
+},{"./md5":17,"buffer":8,"cipher-base":13,"inherits":21,"ripemd160":39,"sha.js":42}],16:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var intSize = 4
+var zeroBuffer = new Buffer(intSize)
+zeroBuffer.fill(0)
+
+var charSize = 8
+var hashSize = 16
+
+function toArray (buf) {
+  if ((buf.length % intSize) !== 0) {
+    var len = buf.length + (intSize - (buf.length % intSize))
+    buf = Buffer.concat([buf, zeroBuffer], len)
+  }
+
+  var arr = new Array(buf.length >>> 2)
+  for (var i = 0, j = 0; i < buf.length; i += intSize, j++) {
+    arr[j] = buf.readInt32LE(i)
+  }
+
+  return arr
+}
+
+module.exports = function hash (buf, fn) {
+  var arr = fn(toArray(buf), buf.length * charSize)
+  buf = new Buffer(hashSize)
+  for (var i = 0; i < arr.length; i++) {
+    buf.writeInt32LE(arr[i], i << 2, true)
+  }
+  return buf
+}
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":8}],17:[function(require,module,exports){
+'use strict'
+/*
+ * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
+ * Digest Algorithm, as defined in RFC 1321.
+ * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for more info.
+ */
+
+var makeHash = require('./make-hash')
+
+/*
+ * Calculate the MD5 of an array of little-endian words, and a bit length
+ */
+function core_md5 (x, len) {
+  /* append padding */
+  x[len >> 5] |= 0x80 << ((len) % 32)
+  x[(((len + 64) >>> 9) << 4) + 14] = len
+
+  var a = 1732584193
+  var b = -271733879
+  var c = -1732584194
+  var d = 271733878
+
+  for (var i = 0; i < x.length; i += 16) {
+    var olda = a
+    var oldb = b
+    var oldc = c
+    var oldd = d
+
+    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936)
+    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586)
+    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819)
+    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330)
+    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897)
+    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426)
+    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341)
+    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983)
+    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416)
+    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417)
+    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063)
+    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162)
+    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682)
+    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101)
+    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290)
+    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329)
+
+    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510)
+    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632)
+    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713)
+    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302)
+    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691)
+    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083)
+    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335)
+    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848)
+    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438)
+    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690)
+    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961)
+    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501)
+    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467)
+    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784)
+    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473)
+    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734)
+
+    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558)
+    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463)
+    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562)
+    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556)
+    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060)
+    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353)
+    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632)
+    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640)
+    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174)
+    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222)
+    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979)
+    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189)
+    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487)
+    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835)
+    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520)
+    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651)
+
+    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844)
+    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415)
+    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905)
+    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055)
+    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571)
+    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606)
+    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523)
+    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799)
+    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359)
+    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744)
+    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380)
+    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649)
+    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070)
+    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379)
+    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259)
+    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551)
+
+    a = safe_add(a, olda)
+    b = safe_add(b, oldb)
+    c = safe_add(c, oldc)
+    d = safe_add(d, oldd)
+  }
 
-},{}],54:[function(require,module,exports){
-'use strict';
+  return [a, b, c, d]
+}
 
-var utils = exports;
-var BN = require('bn.js');
+/*
+ * These functions implement the four basic operations the algorithm uses.
+ */
+function md5_cmn (q, a, b, x, s, t) {
+  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
+}
 
-utils.assert = function assert(val, msg) {
-  if (!val)
-    throw new Error(msg || 'Assertion failed');
+function md5_ff (a, b, c, d, x, s, t) {
+  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
+}
+
+function md5_gg (a, b, c, d, x, s, t) {
+  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
+}
+
+function md5_hh (a, b, c, d, x, s, t) {
+  return md5_cmn(b ^ c ^ d, a, b, x, s, t)
+}
+
+function md5_ii (a, b, c, d, x, s, t) {
+  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
+}
+
+/*
+ * Add integers, wrapping at 2^32. This uses 16-bit operations internally
+ * to work around bugs in some JS interpreters.
+ */
+function safe_add (x, y) {
+  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
+  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
+  return (msw << 16) | (lsw & 0xFFFF)
+}
+
+/*
+ * Bitwise rotate a 32-bit number to the left.
+ */
+function bit_rol (num, cnt) {
+  return (num << cnt) | (num >>> (32 - cnt))
+}
+
+module.exports = function md5 (buf) {
+  return makeHash(buf, core_md5)
+}
+
+},{"./make-hash":16}],18:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+function EventEmitter() {
+  this._events = this._events || {};
+  this._maxListeners = this._maxListeners || undefined;
+}
+module.exports = EventEmitter;
+
+// Backwards-compat with node 0.10.x
+EventEmitter.EventEmitter = EventEmitter;
+
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
+
+// By default EventEmitters will print a warning if more than 10 listeners are
+// added to it. This is a useful default which helps finding memory leaks.
+EventEmitter.defaultMaxListeners = 10;
+
+// Obviously not all Emitters should be limited to 10. This function allows
+// that to be increased. Set to zero for unlimited.
+EventEmitter.prototype.setMaxListeners = function(n) {
+  if (!isNumber(n) || n < 0 || isNaN(n))
+    throw TypeError('n must be a positive number');
+  this._maxListeners = n;
+  return this;
 };
 
-function toArray(msg, enc) {
-  if (Array.isArray(msg))
-    return msg.slice();
-  if (!msg)
-    return [];
-  var res = [];
-  if (typeof msg !== 'string') {
-    for (var i = 0; i < msg.length; i++)
-      res[i] = msg[i] | 0;
-    return res;
+EventEmitter.prototype.emit = function(type) {
+  var er, handler, len, args, i, listeners;
+
+  if (!this._events)
+    this._events = {};
+
+  // If there is no 'error' event listener then throw.
+  if (type === 'error') {
+    if (!this._events.error ||
+        (isObject(this._events.error) && !this._events.error.length)) {
+      er = arguments[1];
+      if (er instanceof Error) {
+        throw er; // Unhandled 'error' event
+      } else {
+        // At least give some kind of context to the user
+        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
+        err.context = er;
+        throw err;
+      }
+    }
   }
-  if (!enc) {
-    for (var i = 0; i < msg.length; i++) {
-      var c = msg.charCodeAt(i);
-      var hi = c >> 8;
-      var lo = c & 0xff;
-      if (hi)
-        res.push(hi, lo);
-      else
-        res.push(lo);
+
+  handler = this._events[type];
+
+  if (isUndefined(handler))
+    return false;
+
+  if (isFunction(handler)) {
+    switch (arguments.length) {
+      // fast cases
+      case 1:
+        handler.call(this);
+        break;
+      case 2:
+        handler.call(this, arguments[1]);
+        break;
+      case 3:
+        handler.call(this, arguments[1], arguments[2]);
+        break;
+      // slower
+      default:
+        args = Array.prototype.slice.call(arguments, 1);
+        handler.apply(this, args);
     }
-  } else if (enc === 'hex') {
-    msg = msg.replace(/[^a-z0-9]+/ig, '');
-    if (msg.length % 2 !== 0)
-      msg = '0' + msg;
-    for (var i = 0; i < msg.length; i += 2)
-      res.push(parseInt(msg[i] + msg[i + 1], 16));
+  } else if (isObject(handler)) {
+    args = Array.prototype.slice.call(arguments, 1);
+    listeners = handler.slice();
+    len = listeners.length;
+    for (i = 0; i < len; i++)
+      listeners[i].apply(this, args);
   }
-  return res;
-}
-utils.toArray = toArray;
 
-function zero2(word) {
-  if (word.length === 1)
-    return '0' + word;
-  else
-    return word;
-}
-utils.zero2 = zero2;
+  return true;
+};
 
-function toHex(msg) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++)
-    res += zero2(msg[i].toString(16));
-  return res;
-}
-utils.toHex = toHex;
+EventEmitter.prototype.addListener = function(type, listener) {
+  var m;
 
-utils.encode = function encode(arr, enc) {
-  if (enc === 'hex')
-    return toHex(arr);
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events)
+    this._events = {};
+
+  // To avoid recursion in the case that type === "newListener"! Before
+  // adding it to the listeners, first emit "newListener".
+  if (this._events.newListener)
+    this.emit('newListener', type,
+              isFunction(listener.listener) ?
+              listener.listener : listener);
+
+  if (!this._events[type])
+    // Optimize the case of one listener. Don't need the extra array object.
+    this._events[type] = listener;
+  else if (isObject(this._events[type]))
+    // If we've already got an array, just append.
+    this._events[type].push(listener);
   else
-    return arr;
+    // Adding the second element, need to change to array.
+    this._events[type] = [this._events[type], listener];
+
+  // Check for listener leak
+  if (isObject(this._events[type]) && !this._events[type].warned) {
+    if (!isUndefined(this._maxListeners)) {
+      m = this._maxListeners;
+    } else {
+      m = EventEmitter.defaultMaxListeners;
+    }
+
+    if (m && m > 0 && this._events[type].length > m) {
+      this._events[type].warned = true;
+      console.error('(node) warning: possible EventEmitter memory ' +
+                    'leak detected. %d listeners added. ' +
+                    'Use emitter.setMaxListeners() to increase limit.',
+                    this._events[type].length);
+      if (typeof console.trace === 'function') {
+        // not supported in IE 10
+        console.trace();
+      }
+    }
+  }
+
+  return this;
 };
 
-// Represent num in a w-NAF form
-function getNAF(num, w) {
-  var naf = [];
-  var ws = 1 << (w + 1);
-  var k = num.clone();
-  while (k.cmpn(1) >= 0) {
-    var z;
-    if (k.isOdd()) {
-      var mod = k.andln(ws - 1);
-      if (mod > (ws >> 1) - 1)
-        z = (ws >> 1) - mod;
-      else
-        z = mod;
-      k.isubn(z);
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+
+EventEmitter.prototype.once = function(type, listener) {
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  var fired = false;
+
+  function g() {
+    this.removeListener(type, g);
+
+    if (!fired) {
+      fired = true;
+      listener.apply(this, arguments);
+    }
+  }
+
+  g.listener = listener;
+  this.on(type, g);
+
+  return this;
+};
+
+// emits a 'removeListener' event iff the listener was removed
+EventEmitter.prototype.removeListener = function(type, listener) {
+  var list, position, length, i;
+
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events || !this._events[type])
+    return this;
+
+  list = this._events[type];
+  length = list.length;
+  position = -1;
+
+  if (list === listener ||
+      (isFunction(list.listener) && list.listener === listener)) {
+    delete this._events[type];
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+
+  } else if (isObject(list)) {
+    for (i = length; i-- > 0;) {
+      if (list[i] === listener ||
+          (list[i].listener && list[i].listener === listener)) {
+        position = i;
+        break;
+      }
+    }
+
+    if (position < 0)
+      return this;
+
+    if (list.length === 1) {
+      list.length = 0;
+      delete this._events[type];
     } else {
-      z = 0;
+      list.splice(position, 1);
     }
-    naf.push(z);
 
-    // Optimization, shift by word if possible
-    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
-    for (var i = 1; i < shift; i++)
-      naf.push(0);
-    k.iushrn(shift);
-  }
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+  }
+
+  return this;
+};
+
+EventEmitter.prototype.removeAllListeners = function(type) {
+  var key, listeners;
+
+  if (!this._events)
+    return this;
+
+  // not listening for removeListener, no need to emit
+  if (!this._events.removeListener) {
+    if (arguments.length === 0)
+      this._events = {};
+    else if (this._events[type])
+      delete this._events[type];
+    return this;
+  }
+
+  // emit removeListener for all listeners on all events
+  if (arguments.length === 0) {
+    for (key in this._events) {
+      if (key === 'removeListener') continue;
+      this.removeAllListeners(key);
+    }
+    this.removeAllListeners('removeListener');
+    this._events = {};
+    return this;
+  }
+
+  listeners = this._events[type];
+
+  if (isFunction(listeners)) {
+    this.removeListener(type, listeners);
+  } else if (listeners) {
+    // LIFO order
+    while (listeners.length)
+      this.removeListener(type, listeners[listeners.length - 1]);
+  }
+  delete this._events[type];
+
+  return this;
+};
+
+EventEmitter.prototype.listeners = function(type) {
+  var ret;
+  if (!this._events || !this._events[type])
+    ret = [];
+  else if (isFunction(this._events[type]))
+    ret = [this._events[type]];
+  else
+    ret = this._events[type].slice();
+  return ret;
+};
+
+EventEmitter.prototype.listenerCount = function(type) {
+  if (this._events) {
+    var evlistener = this._events[type];
+
+    if (isFunction(evlistener))
+      return 1;
+    else if (evlistener)
+      return evlistener.length;
+  }
+  return 0;
+};
+
+EventEmitter.listenerCount = function(emitter, type) {
+  return emitter.listenerCount(type);
+};
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+
+},{}],19:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var Transform = require('stream').Transform
+var inherits = require('inherits')
+
+function HashBase (blockSize) {
+  Transform.call(this)
+
+  this._block = new Buffer(blockSize)
+  this._blockSize = blockSize
+  this._blockOffset = 0
+  this._length = [0, 0, 0, 0]
+
+  this._finalized = false
+}
+
+inherits(HashBase, Transform)
+
+HashBase.prototype._transform = function (chunk, encoding, callback) {
+  var error = null
+  try {
+    if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding)
+    this.update(chunk)
+  } catch (err) {
+    error = err
+  }
+
+  callback(error)
+}
+
+HashBase.prototype._flush = function (callback) {
+  var error = null
+  try {
+    this.push(this._digest())
+  } catch (err) {
+    error = err
+  }
+
+  callback(error)
+}
+
+HashBase.prototype.update = function (data, encoding) {
+  if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
+  if (this._finalized) throw new Error('Digest already called')
+  if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary')
+
+  // consume data
+  var block = this._block
+  var offset = 0
+  while (this._blockOffset + data.length - offset >= this._blockSize) {
+    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
+    this._update()
+    this._blockOffset = 0
+  }
+  while (offset < data.length) block[this._blockOffset++] = data[offset++]
+
+  // update length
+  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
+    this._length[j] += carry
+    carry = (this._length[j] / 0x0100000000) | 0
+    if (carry > 0) this._length[j] -= 0x0100000000 * carry
+  }
+
+  return this
+}
+
+HashBase.prototype._update = function (data) {
+  throw new Error('_update is not implemented')
+}
+
+HashBase.prototype.digest = function (encoding) {
+  if (this._finalized) throw new Error('Digest already called')
+  this._finalized = true
+
+  var digest = this._digest()
+  if (encoding !== undefined) digest = digest.toString(encoding)
+  return digest
+}
+
+HashBase.prototype._digest = function () {
+  throw new Error('_digest is not implemented')
+}
+
+module.exports = HashBase
+
+}).call(this,require("buffer").Buffer)
+},{"buffer":8,"inherits":21,"stream":49}],20:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
 
-  return naf;
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
 }
-utils.getNAF = getNAF;
 
-// Represent k1, k2 in a Joint Sparse Form
-function getJSF(k1, k2) {
-  var jsf = [
-    [],
-    []
-  ];
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
 
-  k1 = k1.clone();
-  k2 = k2.clone();
-  var d1 = 0;
-  var d2 = 0;
-  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {
+  value = Math.abs(value)
 
-    // First phase
-    var m14 = (k1.andln(3) + d1) & 3;
-    var m24 = (k2.andln(3) + d2) & 3;
-    if (m14 === 3)
-      m14 = -1;
-    if (m24 === 3)
-      m24 = -1;
-    var u1;
-    if ((m14 & 1) === 0) {
-      u1 = 0;
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
     } else {
-      var m8 = (k1.andln(7) + d1) & 7;
-      if ((m8 === 3 || m8 === 5) && m24 === 2)
-        u1 = -m14;
-      else
-        u1 = m14;
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
     }
-    jsf[0].push(u1);
 
-    var u2;
-    if ((m24 & 1) === 0) {
-      u2 = 0;
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen)
+      e = e + eBias
     } else {
-      var m8 = (k2.andln(7) + d2) & 7;
-      if ((m8 === 3 || m8 === 5) && m14 === 2)
-        u2 = -m24;
-      else
-        u2 = m24;
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
     }
-    jsf[1].push(u2);
-
-    // Second phase
-    if (2 * d1 === u1 + 1)
-      d1 = 1 - d1;
-    if (2 * d2 === u2 + 1)
-      d2 = 1 - d2;
-    k1.iushrn(1);
-    k2.iushrn(1);
   }
 
-  return jsf;
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+  buffer[offset + i - d] |= s * 128
 }
-utils.getJSF = getJSF;
 
-function cachedProperty(obj, name, computer) {
-  var key = '_' + name;
-  obj.prototype[name] = function cachedProperty() {
-    return this[key] !== undefined ? this[key] :
-           this[key] = computer.call(this);
+},{}],21:[function(require,module,exports){
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
   };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
 }
-utils.cachedProperty = cachedProperty;
 
-function parseBytes(bytes) {
-  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
-                                     bytes;
-}
-utils.parseBytes = parseBytes;
+},{}],22:[function(require,module,exports){
+/*!
+ * Determine if an object is a Buffer
+ *
+ * @author   Feross Aboukhadijeh <https://feross.org>
+ * @license  MIT
+ */
 
-function intFromLE(bytes) {
-  return new BN(bytes, 'hex', 'le');
+// The _isBuffer check is for Safari 5-7 support, because it's missing
+// Object.prototype.constructor. Remove this eventually
+module.exports = function (obj) {
+  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
 }
-utils.intFromLE = intFromLE;
 
+function isBuffer (obj) {
+  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+}
 
-},{"bn.js":33}],55:[function(require,module,exports){
-module.exports={
-  "_args": [
-    [
-      {
-        "raw": "elliptic@^6.2.3",
-        "scope": null,
-        "escapedName": "elliptic",
-        "name": "elliptic",
-        "rawSpec": "^6.2.3",
-        "spec": ">=6.2.3 <7.0.0",
-        "type": "range"
-      },
-      "/home/user/ethereum/ethereumjs-util/node_modules/secp256k1"
-    ]
-  ],
-  "_from": "elliptic@>=6.2.3 <7.0.0",
-  "_id": "elliptic@6.3.3",
-  "_inCache": true,
-  "_location": "/elliptic",
-  "_nodeVersion": "7.0.0",
-  "_npmOperationalInternal": {
-    "host": "packages-18-east.internal.npmjs.com",
-    "tmp": "tmp/elliptic-6.3.3.tgz_1486422837740_0.10658654430881143"
-  },
-  "_npmUser": {
-    "name": "indutny",
-    "email": "fedor@indutny.com"
-  },
-  "_npmVersion": "3.10.8",
-  "_phantomChildren": {},
-  "_requested": {
-    "raw": "elliptic@^6.2.3",
-    "scope": null,
-    "escapedName": "elliptic",
-    "name": "elliptic",
-    "rawSpec": "^6.2.3",
-    "spec": ">=6.2.3 <7.0.0",
-    "type": "range"
-  },
-  "_requiredBy": [
-    "/browserify-sign",
-    "/create-ecdh",
-    "/secp256k1"
-  ],
-  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz",
-  "_shasum": "5482d9646d54bcb89fd7d994fc9e2e9568876e3f",
-  "_shrinkwrap": null,
-  "_spec": "elliptic@^6.2.3",
-  "_where": "/home/user/ethereum/ethereumjs-util/node_modules/secp256k1",
-  "author": {
-    "name": "Fedor Indutny",
-    "email": "fedor@indutny.com"
-  },
-  "bugs": {
-    "url": "https://github.com/indutny/elliptic/issues"
-  },
-  "dependencies": {
-    "bn.js": "^4.4.0",
-    "brorand": "^1.0.1",
-    "hash.js": "^1.0.0",
-    "inherits": "^2.0.1"
-  },
-  "description": "EC cryptography",
-  "devDependencies": {
-    "brfs": "^1.4.3",
-    "coveralls": "^2.11.3",
-    "grunt": "^0.4.5",
-    "grunt-browserify": "^5.0.0",
-    "grunt-cli": "^1.2.0",
-    "grunt-contrib-connect": "^1.0.0",
-    "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-uglify": "^1.0.1",
-    "grunt-mocha-istanbul": "^3.0.1",
-    "grunt-saucelabs": "^8.6.2",
-    "istanbul": "^0.4.2",
-    "jscs": "^2.9.0",
-    "jshint": "^2.6.0",
-    "mocha": "^2.1.0"
-  },
-  "directories": {},
-  "dist": {
-    "shasum": "5482d9646d54bcb89fd7d994fc9e2e9568876e3f",
-    "tarball": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.3.tgz"
-  },
-  "files": [
-    "lib"
-  ],
-  "gitHead": "63aee8d697e9b7fac37ece24222029117a890a7e",
-  "homepage": "https://github.com/indutny/elliptic",
-  "keywords": [
-    "EC",
-    "Elliptic",
-    "curve",
-    "Cryptography"
-  ],
-  "license": "MIT",
-  "main": "lib/elliptic.js",
-  "maintainers": [
-    {
-      "name": "indutny",
-      "email": "fedor@indutny.com"
-    }
-  ],
-  "name": "elliptic",
-  "optionalDependencies": {},
-  "readme": "ERROR: No README data found!",
-  "repository": {
-    "type": "git",
-    "url": "git+ssh://git@github.com/indutny/elliptic.git"
-  },
-  "scripts": {
-    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
-    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
-    "lint": "npm run jscs && npm run jshint",
-    "test": "npm run lint && npm run unit",
-    "unit": "istanbul test _mocha --reporter=spec test/index.js",
-    "version": "grunt dist && git add dist/"
-  },
-  "version": "6.3.3"
+// For Node v0.10 support. Remove this eventually.
+function isSlowBuffer (obj) {
+  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
 }
 
-},{}],56:[function(require,module,exports){
-(function (Buffer){
-'use strict';
+},{}],23:[function(require,module,exports){
+var toString = {}.toString;
 
-var isHexPrefixed = require('is-hex-prefixed');
-var stripHexPrefix = require('strip-hex-prefix');
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
 
-/**
- * Pads a `String` to have an even length
- * @param {String} value
- * @return {String} output
- */
-function padToEven(value) {
-  var a = value; // eslint-disable-line
+},{}],24:[function(require,module,exports){
+(function (process){
+'use strict';
 
-  if (typeof a !== 'string') {
-    throw new Error('[ethjs-util] while padding to even, value must be string, is currently ' + typeof a + ', while padToEven.');
-  }
+if (!process.version ||
+    process.version.indexOf('v0.') === 0 ||
+    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
+  module.exports = nextTick;
+} else {
+  module.exports = process.nextTick;
+}
 
-  if (a.length % 2) {
-    a = '0' + a;
+function nextTick(fn, arg1, arg2, arg3) {
+  if (typeof fn !== 'function') {
+    throw new TypeError('"callback" argument must be a function');
+  }
+  var len = arguments.length;
+  var args, i;
+  switch (len) {
+  case 0:
+  case 1:
+    return process.nextTick(fn);
+  case 2:
+    return process.nextTick(function afterTickOne() {
+      fn.call(null, arg1);
+    });
+  case 3:
+    return process.nextTick(function afterTickTwo() {
+      fn.call(null, arg1, arg2);
+    });
+  case 4:
+    return process.nextTick(function afterTickThree() {
+      fn.call(null, arg1, arg2, arg3);
+    });
+  default:
+    args = new Array(len - 1);
+    i = 0;
+    while (i < args.length) {
+      args[i++] = arguments[i];
+    }
+    return process.nextTick(function afterTick() {
+      fn.apply(null, args);
+    });
   }
-
-  return a;
 }
 
-/**
- * Converts a `Number` into a hex `String`
- * @param {Number} i
- * @return {String}
- */
-function intToHex(i) {
-  var hex = i.toString(16); // eslint-disable-line
+}).call(this,require('_process'))
+},{"_process":25}],25:[function(require,module,exports){
+// shim for using process in browser
+var process = module.exports = {};
 
-  return '0x' + padToEven(hex);
-}
+// cached from whatever global is present so that test runners that stub it
+// don't break things.  But we need to wrap it in a try catch in case it is
+// wrapped in strict mode code which doesn't define any globals.  It's inside a
+// function because try/catches deoptimize in certain engines.
 
-/**
- * Converts an `Number` to a `Buffer`
- * @param {Number} i
- * @return {Buffer}
- */
-function intToBuffer(i) {
-  var hex = intToHex(i);
+var cachedSetTimeout;
+var cachedClearTimeout;
 
-  return new Buffer(hex.slice(2), 'hex');
+function defaultSetTimout() {
+    throw new Error('setTimeout has not been defined');
 }
-
-/**
- * Get the binary size of a string
- * @param {String} str
- * @return {Number}
- */
-function getBinarySize(str) {
-  if (typeof str !== 'string') {
-    throw new Error('[ethjs-util] while getting binary size, method getBinarySize requires input \'str\' to be type String, got \'' + typeof str + '\'.');
-  }
-
-  return Buffer.byteLength(str, 'utf8');
+function defaultClearTimeout () {
+    throw new Error('clearTimeout has not been defined');
 }
+(function () {
+    try {
+        if (typeof setTimeout === 'function') {
+            cachedSetTimeout = setTimeout;
+        } else {
+            cachedSetTimeout = defaultSetTimout;
+        }
+    } catch (e) {
+        cachedSetTimeout = defaultSetTimout;
+    }
+    try {
+        if (typeof clearTimeout === 'function') {
+            cachedClearTimeout = clearTimeout;
+        } else {
+            cachedClearTimeout = defaultClearTimeout;
+        }
+    } catch (e) {
+        cachedClearTimeout = defaultClearTimeout;
+    }
+} ())
+function runTimeout(fun) {
+    if (cachedSetTimeout === setTimeout) {
+        //normal enviroments in sane situations
+        return setTimeout(fun, 0);
+    }
+    // if setTimeout wasn't available but was latter defined
+    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
+        cachedSetTimeout = setTimeout;
+        return setTimeout(fun, 0);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedSetTimeout(fun, 0);
+    } catch(e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
+            return cachedSetTimeout.call(null, fun, 0);
+        } catch(e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
+            return cachedSetTimeout.call(this, fun, 0);
+        }
+    }
 
-/**
- * Returns TRUE if the first specified array contains all elements
- * from the second one. FALSE otherwise.
- *
- * @param {array} superset
- * @param {array} subset
- *
- * @returns {boolean}
- */
-function arrayContainsArray(superset, subset, some) {
-  if (Array.isArray(superset) !== true) {
-    throw new Error('[ethjs-util] method arrayContainsArray requires input \'superset\' to be an array got type \'' + typeof superset + '\'');
-  }
-  if (Array.isArray(subset) !== true) {
-    throw new Error('[ethjs-util] method arrayContainsArray requires input \'subset\' to be an array got type \'' + typeof subset + '\'');
-  }
 
-  return subset[Boolean(some) && 'some' || 'every'](function (value) {
-    return superset.indexOf(value) >= 0;
-  });
 }
+function runClearTimeout(marker) {
+    if (cachedClearTimeout === clearTimeout) {
+        //normal enviroments in sane situations
+        return clearTimeout(marker);
+    }
+    // if clearTimeout wasn't available but was latter defined
+    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
+        cachedClearTimeout = clearTimeout;
+        return clearTimeout(marker);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedClearTimeout(marker);
+    } catch (e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
+            return cachedClearTimeout.call(null, marker);
+        } catch (e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
+            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
+            return cachedClearTimeout.call(this, marker);
+        }
+    }
 
-/**
- * Should be called to get utf8 from it's hex representation
- *
- * @method toUtf8
- * @param {String} string in hex
- * @returns {String} ascii string representation of hex value
- */
-function toUtf8(hex) {
-  var bufferValue = new Buffer(padToEven(stripHexPrefix(hex).replace(/^0+|0+$/g, '')), 'hex');
 
-  return bufferValue.toString('utf8');
-}
 
-/**
- * Should be called to get ascii from it's hex representation
- *
- * @method toAscii
- * @param {String} string in hex
- * @returns {String} ascii string representation of hex value
- */
-function toAscii(hex) {
-  var str = ''; // eslint-disable-line
-  var i = 0,
-      l = hex.length; // eslint-disable-line
+}
+var queue = [];
+var draining = false;
+var currentQueue;
+var queueIndex = -1;
 
-  if (hex.substring(0, 2) === '0x') {
-    i = 2;
-  }
+function cleanUpNextTick() {
+    if (!draining || !currentQueue) {
+        return;
+    }
+    draining = false;
+    if (currentQueue.length) {
+        queue = currentQueue.concat(queue);
+    } else {
+        queueIndex = -1;
+    }
+    if (queue.length) {
+        drainQueue();
+    }
+}
 
-  for (; i < l; i += 2) {
-    var code = parseInt(hex.substr(i, 2), 16);
-    str += String.fromCharCode(code);
-  }
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    var timeout = runTimeout(cleanUpNextTick);
+    draining = true;
 
-  return str;
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        while (++queueIndex < len) {
+            if (currentQueue) {
+                currentQueue[queueIndex].run();
+            }
+        }
+        queueIndex = -1;
+        len = queue.length;
+    }
+    currentQueue = null;
+    draining = false;
+    runClearTimeout(timeout);
 }
 
-/**
- * Should be called to get hex representation (prefixed by 0x) of utf8 string
- *
- * @method fromUtf8
- * @param {String} string
- * @param {Number} optional padding
- * @returns {String} hex representation of input string
- */
-function fromUtf8(stringValue) {
-  var str = new Buffer(stringValue, 'utf8');
+process.nextTick = function (fun) {
+    var args = new Array(arguments.length - 1);
+    if (arguments.length > 1) {
+        for (var i = 1; i < arguments.length; i++) {
+            args[i - 1] = arguments[i];
+        }
+    }
+    queue.push(new Item(fun, args));
+    if (queue.length === 1 && !draining) {
+        runTimeout(drainQueue);
+    }
+};
 
-  return '0x' + padToEven(str.toString('hex')).replace(/^0+|0+$/g, '');
+// v8 likes predictible objects
+function Item(fun, array) {
+    this.fun = fun;
+    this.array = array;
 }
+Item.prototype.run = function () {
+    this.fun.apply(null, this.array);
+};
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
 
-/**
- * Should be called to get hex representation (prefixed by 0x) of ascii string
- *
- * @method fromAscii
- * @param {String} string
- * @param {Number} optional padding
- * @returns {String} hex representation of input string
- */
-function fromAscii(stringValue) {
-  var hex = ''; // eslint-disable-line
-  for (var i = 0; i < stringValue.length; i++) {
-    // eslint-disable-line
-    var code = stringValue.charCodeAt(i);
-    var n = code.toString(16);
-    hex += n.length < 2 ? '0' + n : n;
-  }
+function noop() {}
 
-  return '0x' + hex;
-}
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+process.prependListener = noop;
+process.prependOnceListener = noop;
 
-/**
- * getKeys([{a: 1, b: 2}, {a: 3, b: 4}], 'a') => [1, 3]
- *
- * @method getKeys get specific key from inner object array of objects
- * @param {String} params
- * @param {String} key
- * @param {Boolean} allowEmpty
- * @returns {Array} output just a simple array of output keys
- */
-function getKeys(params, key, allowEmpty) {
-  if (!Array.isArray(params)) {
-    throw new Error('[ethjs-util] method getKeys expecting type Array as \'params\' input, got \'' + typeof params + '\'');
-  }
-  if (typeof key !== 'string') {
-    throw new Error('[ethjs-util] method getKeys expecting type String for input \'key\' got \'' + typeof key + '\'.');
-  }
+process.listeners = function (name) { return [] }
 
-  var result = []; // eslint-disable-line
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
 
-  for (var i = 0; i < params.length; i++) {
-    // eslint-disable-line
-    var value = params[i][key]; // eslint-disable-line
-    if (allowEmpty && !value) {
-      value = '';
-    } else if (typeof value !== 'string') {
-      throw new Error('invalid abi');
-    }
-    result.push(value);
-  }
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
 
-  return result;
-}
+},{}],26:[function(require,module,exports){
+module.exports = require('./lib/_stream_duplex.js');
 
-/**
- * Is the string a hex string.
- *
- * @method check if string is hex string of specific length
- * @param {String} value
- * @param {Number} length
- * @returns {Boolean} output the string is a hex string
- */
-function isHexString(value, length) {
-  if (typeof value !== 'string' || !value.match(/^0x[0-9A-Fa-f]*$/)) {
-    return false;
-  }
+},{"./lib/_stream_duplex.js":27}],27:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  if (length && value.length !== 2 + 2 * length) {
-    return false;
-  }
+// a duplex stream is just a stream that is both readable and writable.
+// Since JS doesn't have multiple prototypal inheritance, this class
+// prototypally inherits from Readable, and then parasitically from
+// Writable.
 
-  return true;
-}
+'use strict';
 
-module.exports = {
-  arrayContainsArray: arrayContainsArray,
-  intToBuffer: intToBuffer,
-  getBinarySize: getBinarySize,
-  isHexPrefixed: isHexPrefixed,
-  stripHexPrefix: stripHexPrefix,
-  padToEven: padToEven,
-  intToHex: intToHex,
-  fromAscii: fromAscii,
-  fromUtf8: fromUtf8,
-  toAscii: toAscii,
-  toUtf8: toUtf8,
-  getKeys: getKeys,
-  isHexString: isHexString
+/*<replacement>*/
+
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
+
+/*<replacement>*/
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) {
+    keys.push(key);
+  }return keys;
 };
-}).call(this,require("buffer").Buffer)
-},{"buffer":5,"is-hex-prefixed":64,"strip-hex-prefix":87}],57:[function(require,module,exports){
-var hash = exports;
+/*</replacement>*/
 
-hash.utils = require('./hash/utils');
-hash.common = require('./hash/common');
-hash.sha = require('./hash/sha');
-hash.ripemd = require('./hash/ripemd');
-hash.hmac = require('./hash/hmac');
+module.exports = Duplex;
 
-// Proxy hash functions to the main object
-hash.sha1 = hash.sha.sha1;
-hash.sha256 = hash.sha.sha256;
-hash.sha224 = hash.sha.sha224;
-hash.sha384 = hash.sha.sha384;
-hash.sha512 = hash.sha.sha512;
-hash.ripemd160 = hash.ripemd.ripemd160;
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-},{"./hash/common":58,"./hash/hmac":59,"./hash/ripemd":60,"./hash/sha":61,"./hash/utils":62}],58:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
+var Readable = require('./_stream_readable');
+var Writable = require('./_stream_writable');
 
-function BlockHash() {
-  this.pending = null;
-  this.pendingTotal = 0;
-  this.blockSize = this.constructor.blockSize;
-  this.outSize = this.constructor.outSize;
-  this.hmacStrength = this.constructor.hmacStrength;
-  this.padLength = this.constructor.padLength / 8;
-  this.endian = 'big';
+util.inherits(Duplex, Readable);
 
-  this._delta8 = this.blockSize / 8;
-  this._delta32 = this.blockSize / 32;
+var keys = objectKeys(Writable.prototype);
+for (var v = 0; v < keys.length; v++) {
+  var method = keys[v];
+  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
 }
-exports.BlockHash = BlockHash;
 
-BlockHash.prototype.update = function update(msg, enc) {
-  // Convert message to array, pad it, and join into 32bit blocks
-  msg = utils.toArray(msg, enc);
-  if (!this.pending)
-    this.pending = msg;
-  else
-    this.pending = this.pending.concat(msg);
-  this.pendingTotal += msg.length;
+function Duplex(options) {
+  if (!(this instanceof Duplex)) return new Duplex(options);
 
-  // Enough data, try updating
-  if (this.pending.length >= this._delta8) {
-    msg = this.pending;
+  Readable.call(this, options);
+  Writable.call(this, options);
 
-    // Process pending data in blocks
-    var r = msg.length % this._delta8;
-    this.pending = msg.slice(msg.length - r, msg.length);
-    if (this.pending.length === 0)
-      this.pending = null;
+  if (options && options.readable === false) this.readable = false;
 
-    msg = utils.join32(msg, 0, msg.length - r, this.endian);
-    for (var i = 0; i < msg.length; i += this._delta32)
-      this._update(msg, i, i + this._delta32);
-  }
+  if (options && options.writable === false) this.writable = false;
 
-  return this;
-};
+  this.allowHalfOpen = true;
+  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
 
-BlockHash.prototype.digest = function digest(enc) {
-  this.update(this._pad());
-  assert(this.pending === null);
+  this.once('end', onend);
+}
 
-  return this._digest(enc);
-};
+// the no-half-open enforcer
+function onend() {
+  // if we allow half-open state, or if the writable side ended,
+  // then we're ok.
+  if (this.allowHalfOpen || this._writableState.ended) return;
 
-BlockHash.prototype._pad = function pad() {
-  var len = this.pendingTotal;
-  var bytes = this._delta8;
-  var k = bytes - ((len + this.padLength) % bytes);
-  var res = new Array(k + this.padLength);
-  res[0] = 0x80;
-  for (var i = 1; i < k; i++)
-    res[i] = 0;
+  // no more data can be written.
+  // But allow more writes to happen in this tick.
+  processNextTick(onEndNT, this);
+}
 
-  // Append length
-  len <<= 3;
-  if (this.endian === 'big') {
-    for (var t = 8; t < this.padLength; t++)
-      res[i++] = 0;
+function onEndNT(self) {
+  self.end();
+}
 
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = (len >>> 24) & 0xff;
-    res[i++] = (len >>> 16) & 0xff;
-    res[i++] = (len >>> 8) & 0xff;
-    res[i++] = len & 0xff;
-  } else {
-    res[i++] = len & 0xff;
-    res[i++] = (len >>> 8) & 0xff;
-    res[i++] = (len >>> 16) & 0xff;
-    res[i++] = (len >>> 24) & 0xff;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
-    res[i++] = 0;
+Object.defineProperty(Duplex.prototype, 'destroyed', {
+  get: function () {
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return false;
+    }
+    return this._readableState.destroyed && this._writableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (this._readableState === undefined || this._writableState === undefined) {
+      return;
+    }
 
-    for (var t = 8; t < this.padLength; t++)
-      res[i++] = 0;
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._readableState.destroyed = value;
+    this._writableState.destroyed = value;
   }
+});
 
-  return res;
+Duplex.prototype._destroy = function (err, cb) {
+  this.push(null);
+  this.end();
+
+  processNextTick(cb, err);
 };
 
-},{"../hash":57}],59:[function(require,module,exports){
-var hmac = exports;
+function forEach(xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
+  }
+}
+},{"./_stream_readable":29,"./_stream_writable":31,"core-util-is":14,"inherits":21,"process-nextick-args":24}],28:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
+// a passthrough stream.
+// basically just the most minimal sort of Transform stream.
+// Every written chunk gets output as-is.
 
-function Hmac(hash, key, enc) {
-  if (!(this instanceof Hmac))
-    return new Hmac(hash, key, enc);
-  this.Hash = hash;
-  this.blockSize = hash.blockSize / 8;
-  this.outSize = hash.outSize / 8;
-  this.inner = null;
-  this.outer = null;
+'use strict';
 
-  this._init(utils.toArray(key, enc));
-}
-module.exports = Hmac;
+module.exports = PassThrough;
 
-Hmac.prototype._init = function init(key) {
-  // Shorten key, if needed
-  if (key.length > this.blockSize)
-    key = new this.Hash().update(key).digest();
-  assert(key.length <= this.blockSize);
+var Transform = require('./_stream_transform');
 
-  // Add padding to key
-  for (var i = key.length; i < this.blockSize; i++)
-    key.push(0);
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-  for (var i = 0; i < key.length; i++)
-    key[i] ^= 0x36;
-  this.inner = new this.Hash().update(key);
+util.inherits(PassThrough, Transform);
 
-  // 0x36 ^ 0x5c = 0x6a
-  for (var i = 0; i < key.length; i++)
-    key[i] ^= 0x6a;
-  this.outer = new this.Hash().update(key);
-};
+function PassThrough(options) {
+  if (!(this instanceof PassThrough)) return new PassThrough(options);
 
-Hmac.prototype.update = function update(msg, enc) {
-  this.inner.update(msg, enc);
-  return this;
-};
+  Transform.call(this, options);
+}
 
-Hmac.prototype.digest = function digest(enc) {
-  this.outer.update(this.inner.digest());
-  return this.outer.digest(enc);
+PassThrough.prototype._transform = function (chunk, encoding, cb) {
+  cb(null, chunk);
 };
+},{"./_stream_transform":30,"core-util-is":14,"inherits":21}],29:[function(require,module,exports){
+(function (process,global){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-},{"../hash":57}],60:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
+'use strict';
 
-var rotl32 = utils.rotl32;
-var sum32 = utils.sum32;
-var sum32_3 = utils.sum32_3;
-var sum32_4 = utils.sum32_4;
-var BlockHash = hash.common.BlockHash;
+/*<replacement>*/
 
-function RIPEMD160() {
-  if (!(this instanceof RIPEMD160))
-    return new RIPEMD160();
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
-  BlockHash.call(this);
+module.exports = Readable;
 
-  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
-  this.endian = 'little';
-}
-utils.inherits(RIPEMD160, BlockHash);
-exports.ripemd160 = RIPEMD160;
+/*<replacement>*/
+var isArray = require('isarray');
+/*</replacement>*/
 
-RIPEMD160.blockSize = 512;
-RIPEMD160.outSize = 160;
-RIPEMD160.hmacStrength = 192;
-RIPEMD160.padLength = 64;
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
 
-RIPEMD160.prototype._update = function update(msg, start) {
-  var A = this.h[0];
-  var B = this.h[1];
-  var C = this.h[2];
-  var D = this.h[3];
-  var E = this.h[4];
-  var Ah = A;
-  var Bh = B;
-  var Ch = C;
-  var Dh = D;
-  var Eh = E;
-  for (var j = 0; j < 80; j++) {
-    var T = sum32(
-      rotl32(
-        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
-        s[j]),
-      E);
-    A = E;
-    E = D;
-    D = rotl32(C, 10);
-    C = B;
-    B = T;
-    T = sum32(
-      rotl32(
-        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
-        sh[j]),
-      Eh);
-    Ah = Eh;
-    Eh = Dh;
-    Dh = rotl32(Ch, 10);
-    Ch = Bh;
-    Bh = T;
-  }
-  T = sum32_3(this.h[1], C, Dh);
-  this.h[1] = sum32_3(this.h[2], D, Eh);
-  this.h[2] = sum32_3(this.h[3], E, Ah);
-  this.h[3] = sum32_3(this.h[4], A, Bh);
-  this.h[4] = sum32_3(this.h[0], B, Ch);
-  this.h[0] = T;
-};
+Readable.ReadableState = ReadableState;
 
-RIPEMD160.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'little');
-  else
-    return utils.split32(this.h, 'little');
+/*<replacement>*/
+var EE = require('events').EventEmitter;
+
+var EElistenerCount = function (emitter, type) {
+  return emitter.listeners(type).length;
 };
+/*</replacement>*/
 
-function f(j, x, y, z) {
-  if (j <= 15)
-    return x ^ y ^ z;
-  else if (j <= 31)
-    return (x & y) | ((~x) & z);
-  else if (j <= 47)
-    return (x | (~y)) ^ z;
-  else if (j <= 63)
-    return (x & z) | (y & (~z));
-  else
-    return x ^ (y | (~z));
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
+
+// TODO(bmeurer): Change this back to const once hole checks are
+// properly optimized away early in Ignition+TurboFan.
+/*<replacement>*/
+var Buffer = require('safe-buffer').Buffer;
+var OurUint8Array = global.Uint8Array || function () {};
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
 }
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+}
+/*</replacement>*/
 
-function K(j) {
-  if (j <= 15)
-    return 0x00000000;
-  else if (j <= 31)
-    return 0x5a827999;
-  else if (j <= 47)
-    return 0x6ed9eba1;
-  else if (j <= 63)
-    return 0x8f1bbcdc;
-  else
-    return 0xa953fd4e;
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
+
+/*<replacement>*/
+var debugUtil = require('util');
+var debug = void 0;
+if (debugUtil && debugUtil.debuglog) {
+  debug = debugUtil.debuglog('stream');
+} else {
+  debug = function () {};
 }
+/*</replacement>*/
 
-function Kh(j) {
-  if (j <= 15)
-    return 0x50a28be6;
-  else if (j <= 31)
-    return 0x5c4dd124;
-  else if (j <= 47)
-    return 0x6d703ef3;
-  else if (j <= 63)
-    return 0x7a6d76e9;
-  else
-    return 0x00000000;
+var BufferList = require('./internal/streams/BufferList');
+var destroyImpl = require('./internal/streams/destroy');
+var StringDecoder;
+
+util.inherits(Readable, Stream);
+
+var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
+
+function prependListener(emitter, event, fn) {
+  // Sadly this is not cacheable as some libraries bundle their own
+  // event emitter implementation with them.
+  if (typeof emitter.prependListener === 'function') {
+    return emitter.prependListener(event, fn);
+  } else {
+    // This is a hack to make sure that our error handler is attached before any
+    // userland ones.  NEVER DO THIS. This is here only because this code needs
+    // to continue to work with older versions of Node.js that do not include
+    // the prependListener() method. The goal is to eventually remove this hack.
+    if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
+  }
 }
 
-var r = [
-  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
-  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
-  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
-  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
-];
+function ReadableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-var rh = [
-  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
-  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
-  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
-  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
-  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
-];
+  options = options || {};
 
-var s = [
-  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
-  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
-  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
-  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
-  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
-];
+  // object stream flag. Used to make read(n) ignore n and to
+  // make all the buffer merging and length checks go away
+  this.objectMode = !!options.objectMode;
 
-var sh = [
-  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
-  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
-  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
-  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
-  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
-];
+  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
 
-},{"../hash":57}],61:[function(require,module,exports){
-var hash = require('../hash');
-var utils = hash.utils;
-var assert = utils.assert;
+  // the point at which it stops calling _read() to fill the buffer
+  // Note: 0 is a valid value, means "don't call _read preemptively ever"
+  var hwm = options.highWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
-var rotr32 = utils.rotr32;
-var rotl32 = utils.rotl32;
-var sum32 = utils.sum32;
-var sum32_4 = utils.sum32_4;
-var sum32_5 = utils.sum32_5;
-var rotr64_hi = utils.rotr64_hi;
-var rotr64_lo = utils.rotr64_lo;
-var shr64_hi = utils.shr64_hi;
-var shr64_lo = utils.shr64_lo;
-var sum64 = utils.sum64;
-var sum64_hi = utils.sum64_hi;
-var sum64_lo = utils.sum64_lo;
-var sum64_4_hi = utils.sum64_4_hi;
-var sum64_4_lo = utils.sum64_4_lo;
-var sum64_5_hi = utils.sum64_5_hi;
-var sum64_5_lo = utils.sum64_5_lo;
-var BlockHash = hash.common.BlockHash;
+  // cast to ints.
+  this.highWaterMark = Math.floor(this.highWaterMark);
 
-var sha256_K = [
-  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
-  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
-  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
-  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
-  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
-  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
-  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
-  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
-  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
-  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
-  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
-  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
-  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
-  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
-  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
-  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
-];
+  // A linked list is used to store data chunks instead of an array because the
+  // linked list can remove elements from the beginning faster than
+  // array.shift()
+  this.buffer = new BufferList();
+  this.length = 0;
+  this.pipes = null;
+  this.pipesCount = 0;
+  this.flowing = null;
+  this.ended = false;
+  this.endEmitted = false;
+  this.reading = false;
 
-var sha512_K = [
-  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
-  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
-  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
-  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
-  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
-  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
-  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
-  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
-  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
-  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
-  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
-  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
-  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
-  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
-  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
-  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
-  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
-  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
-  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
-  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
-  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
-  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
-  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
-  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
-  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
-  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
-  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
-  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
-  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
-  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
-  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
-  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
-  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
-  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
-  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
-  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
-  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
-  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
-  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
-  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
-];
+  // a flag to be able to tell if the event 'readable'/'data' is emitted
+  // immediately, or on a later tick.  We set this to true at first, because
+  // any actions that shouldn't happen until "later" should generally also
+  // not happen before the first read call.
+  this.sync = true;
 
-var sha1_K = [
-  0x5A827999, 0x6ED9EBA1,
-  0x8F1BBCDC, 0xCA62C1D6
-];
+  // whenever we return null, then we set a flag to say
+  // that we're awaiting a 'readable' event emission.
+  this.needReadable = false;
+  this.emittedReadable = false;
+  this.readableListening = false;
+  this.resumeScheduled = false;
 
-function SHA256() {
-  if (!(this instanceof SHA256))
-    return new SHA256();
+  // has it been destroyed
+  this.destroyed = false;
 
-  BlockHash.call(this);
-  this.h = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
-             0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
-  this.k = sha256_K;
-  this.W = new Array(64);
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
+
+  // the number of writers that are awaiting a drain event in .pipe()s
+  this.awaitDrain = 0;
+
+  // if true, a maybeReadMore has been scheduled
+  this.readingMore = false;
+
+  this.decoder = null;
+  this.encoding = null;
+  if (options.encoding) {
+    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+    this.decoder = new StringDecoder(options.encoding);
+    this.encoding = options.encoding;
+  }
 }
-utils.inherits(SHA256, BlockHash);
-exports.sha256 = SHA256;
 
-SHA256.blockSize = 512;
-SHA256.outSize = 256;
-SHA256.hmacStrength = 192;
-SHA256.padLength = 64;
+function Readable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-SHA256.prototype._update = function _update(msg, start) {
-  var W = this.W;
+  if (!(this instanceof Readable)) return new Readable(options);
 
-  for (var i = 0; i < 16; i++)
-    W[i] = msg[start + i];
-  for (; i < W.length; i++)
-    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);
+  this._readableState = new ReadableState(options, this);
 
-  var a = this.h[0];
-  var b = this.h[1];
-  var c = this.h[2];
-  var d = this.h[3];
-  var e = this.h[4];
-  var f = this.h[5];
-  var g = this.h[6];
-  var h = this.h[7];
+  // legacy
+  this.readable = true;
 
-  assert(this.k.length === W.length);
-  for (var i = 0; i < W.length; i++) {
-    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
-    var T2 = sum32(s0_256(a), maj32(a, b, c));
-    h = g;
-    g = f;
-    f = e;
-    e = sum32(d, T1);
-    d = c;
-    c = b;
-    b = a;
-    a = sum32(T1, T2);
+  if (options) {
+    if (typeof options.read === 'function') this._read = options.read;
+
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
   }
 
-  this.h[0] = sum32(this.h[0], a);
-  this.h[1] = sum32(this.h[1], b);
-  this.h[2] = sum32(this.h[2], c);
-  this.h[3] = sum32(this.h[3], d);
-  this.h[4] = sum32(this.h[4], e);
-  this.h[5] = sum32(this.h[5], f);
-  this.h[6] = sum32(this.h[6], g);
-  this.h[7] = sum32(this.h[7], h);
-};
+  Stream.call(this);
+}
 
-SHA256.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
+Object.defineProperty(Readable.prototype, 'destroyed', {
+  get: function () {
+    if (this._readableState === undefined) {
+      return false;
+    }
+    return this._readableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._readableState) {
+      return;
+    }
 
-function SHA224() {
-  if (!(this instanceof SHA224))
-    return new SHA224();
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._readableState.destroyed = value;
+  }
+});
 
-  SHA256.call(this);
-  this.h = [ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
-             0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
-}
-utils.inherits(SHA224, SHA256);
-exports.sha224 = SHA224;
+Readable.prototype.destroy = destroyImpl.destroy;
+Readable.prototype._undestroy = destroyImpl.undestroy;
+Readable.prototype._destroy = function (err, cb) {
+  this.push(null);
+  cb(err);
+};
 
-SHA224.blockSize = 512;
-SHA224.outSize = 224;
-SHA224.hmacStrength = 192;
-SHA224.padLength = 64;
+// Manually shove something into the read() buffer.
+// This returns true if the highWaterMark has not been hit yet,
+// similar to how Writable.write() returns true if you should
+// write() some more.
+Readable.prototype.push = function (chunk, encoding) {
+  var state = this._readableState;
+  var skipChunkCheck;
+
+  if (!state.objectMode) {
+    if (typeof chunk === 'string') {
+      encoding = encoding || state.defaultEncoding;
+      if (encoding !== state.encoding) {
+        chunk = Buffer.from(chunk, encoding);
+        encoding = '';
+      }
+      skipChunkCheck = true;
+    }
+  } else {
+    skipChunkCheck = true;
+  }
 
-SHA224.prototype._digest = function digest(enc) {
-  // Just truncate output
-  if (enc === 'hex')
-    return utils.toHex32(this.h.slice(0, 7), 'big');
-  else
-    return utils.split32(this.h.slice(0, 7), 'big');
+  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
 };
 
-function SHA512() {
-  if (!(this instanceof SHA512))
-    return new SHA512();
+// Unshift should *always* be something directly out of read()
+Readable.prototype.unshift = function (chunk) {
+  return readableAddChunk(this, chunk, null, true, false);
+};
 
-  BlockHash.call(this);
-  this.h = [ 0x6a09e667, 0xf3bcc908,
-             0xbb67ae85, 0x84caa73b,
-             0x3c6ef372, 0xfe94f82b,
-             0xa54ff53a, 0x5f1d36f1,
-             0x510e527f, 0xade682d1,
-             0x9b05688c, 0x2b3e6c1f,
-             0x1f83d9ab, 0xfb41bd6b,
-             0x5be0cd19, 0x137e2179 ];
-  this.k = sha512_K;
-  this.W = new Array(160);
-}
-utils.inherits(SHA512, BlockHash);
-exports.sha512 = SHA512;
+function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
+  var state = stream._readableState;
+  if (chunk === null) {
+    state.reading = false;
+    onEofChunk(stream, state);
+  } else {
+    var er;
+    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
+    if (er) {
+      stream.emit('error', er);
+    } else if (state.objectMode || chunk && chunk.length > 0) {
+      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
+        chunk = _uint8ArrayToBuffer(chunk);
+      }
 
-SHA512.blockSize = 1024;
-SHA512.outSize = 512;
-SHA512.hmacStrength = 192;
-SHA512.padLength = 128;
+      if (addToFront) {
+        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
+      } else if (state.ended) {
+        stream.emit('error', new Error('stream.push() after EOF'));
+      } else {
+        state.reading = false;
+        if (state.decoder && !encoding) {
+          chunk = state.decoder.write(chunk);
+          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
+        } else {
+          addChunk(stream, state, chunk, false);
+        }
+      }
+    } else if (!addToFront) {
+      state.reading = false;
+    }
+  }
 
-SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
-  var W = this.W;
+  return needMoreData(state);
+}
 
-  // 32 x 32bit words
-  for (var i = 0; i < 32; i++)
-    W[i] = msg[start + i];
-  for (; i < W.length; i += 2) {
-    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
-    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
-    var c1_hi = W[i - 14];  // i - 7
-    var c1_lo = W[i - 13];
-    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
-    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
-    var c3_hi = W[i - 32];  // i - 16
-    var c3_lo = W[i - 31];
+function addChunk(stream, state, chunk, addToFront) {
+  if (state.flowing && state.length === 0 && !state.sync) {
+    stream.emit('data', chunk);
+    stream.read(0);
+  } else {
+    // update the buffer info.
+    state.length += state.objectMode ? 1 : chunk.length;
+    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
 
-    W[i] = sum64_4_hi(c0_hi, c0_lo,
-                      c1_hi, c1_lo,
-                      c2_hi, c2_lo,
-                      c3_hi, c3_lo);
-    W[i + 1] = sum64_4_lo(c0_hi, c0_lo,
-                          c1_hi, c1_lo,
-                          c2_hi, c2_lo,
-                          c3_hi, c3_lo);
+    if (state.needReadable) emitReadable(stream);
   }
-};
+  maybeReadMore(stream, state);
+}
 
-SHA512.prototype._update = function _update(msg, start) {
-  this._prepareBlock(msg, start);
+function chunkInvalid(state, chunk) {
+  var er;
+  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  return er;
+}
 
-  var W = this.W;
+// if it's past the high water mark, we can push in some more.
+// Also, if we have no data yet, we can stand some
+// more bytes.  This is to work around cases where hwm=0,
+// such as the repl.  Also, if the push() triggered a
+// readable event, and the user called read(largeNumber) such that
+// needReadable was set, then we ought to push more, so that another
+// 'readable' event will be triggered.
+function needMoreData(state) {
+  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
+}
 
-  var ah = this.h[0];
-  var al = this.h[1];
-  var bh = this.h[2];
-  var bl = this.h[3];
-  var ch = this.h[4];
-  var cl = this.h[5];
-  var dh = this.h[6];
-  var dl = this.h[7];
-  var eh = this.h[8];
-  var el = this.h[9];
-  var fh = this.h[10];
-  var fl = this.h[11];
-  var gh = this.h[12];
-  var gl = this.h[13];
-  var hh = this.h[14];
-  var hl = this.h[15];
+Readable.prototype.isPaused = function () {
+  return this._readableState.flowing === false;
+};
 
-  assert(this.k.length === W.length);
-  for (var i = 0; i < W.length; i += 2) {
-    var c0_hi = hh;
-    var c0_lo = hl;
-    var c1_hi = s1_512_hi(eh, el);
-    var c1_lo = s1_512_lo(eh, el);
-    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
-    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
-    var c3_hi = this.k[i];
-    var c3_lo = this.k[i + 1];
-    var c4_hi = W[i];
-    var c4_lo = W[i + 1];
+// backwards compatibility.
+Readable.prototype.setEncoding = function (enc) {
+  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+  this._readableState.decoder = new StringDecoder(enc);
+  this._readableState.encoding = enc;
+  return this;
+};
 
-    var T1_hi = sum64_5_hi(c0_hi, c0_lo,
-                           c1_hi, c1_lo,
-                           c2_hi, c2_lo,
-                           c3_hi, c3_lo,
-                           c4_hi, c4_lo);
-    var T1_lo = sum64_5_lo(c0_hi, c0_lo,
-                           c1_hi, c1_lo,
-                           c2_hi, c2_lo,
-                           c3_hi, c3_lo,
-                           c4_hi, c4_lo);
+// Don't raise the hwm > 8MB
+var MAX_HWM = 0x800000;
+function computeNewHighWaterMark(n) {
+  if (n >= MAX_HWM) {
+    n = MAX_HWM;
+  } else {
+    // Get the next highest power of 2 to prevent increasing hwm excessively in
+    // tiny amounts
+    n--;
+    n |= n >>> 1;
+    n |= n >>> 2;
+    n |= n >>> 4;
+    n |= n >>> 8;
+    n |= n >>> 16;
+    n++;
+  }
+  return n;
+}
 
-    var c0_hi = s0_512_hi(ah, al);
-    var c0_lo = s0_512_lo(ah, al);
-    var c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
-    var c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function howMuchToRead(n, state) {
+  if (n <= 0 || state.length === 0 && state.ended) return 0;
+  if (state.objectMode) return 1;
+  if (n !== n) {
+    // Only flow one buffer at a time
+    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
+  }
+  // If we're asking for more than the current hwm, then raise the hwm.
+  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
+  if (n <= state.length) return n;
+  // Don't have enough
+  if (!state.ended) {
+    state.needReadable = true;
+    return 0;
+  }
+  return state.length;
+}
 
-    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
-    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);
+// you can override either this method, or the async _read(n) below.
+Readable.prototype.read = function (n) {
+  debug('read', n);
+  n = parseInt(n, 10);
+  var state = this._readableState;
+  var nOrig = n;
 
-    hh = gh;
-    hl = gl;
+  if (n !== 0) state.emittedReadable = false;
 
-    gh = fh;
-    gl = fl;
+  // if we're doing read(0) to trigger a readable event, but we
+  // already have a bunch of data in the buffer, then just trigger
+  // the 'readable' event and move on.
+  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
+    debug('read: emitReadable', state.length, state.ended);
+    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
+    return null;
+  }
 
-    fh = eh;
-    fl = el;
+  n = howMuchToRead(n, state);
 
-    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
-    el = sum64_lo(dl, dl, T1_hi, T1_lo);
+  // if we've ended, and we're now clear, then finish it up.
+  if (n === 0 && state.ended) {
+    if (state.length === 0) endReadable(this);
+    return null;
+  }
 
-    dh = ch;
-    dl = cl;
+  // All the actual chunk generation logic needs to be
+  // *below* the call to _read.  The reason is that in certain
+  // synthetic stream cases, such as passthrough streams, _read
+  // may be a completely synchronous operation which may change
+  // the state of the read buffer, providing enough data when
+  // before there was *not* enough.
+  //
+  // So, the steps are:
+  // 1. Figure out what the state of things will be after we do
+  // a read from the buffer.
+  //
+  // 2. If that resulting state will trigger a _read, then call _read.
+  // Note that this may be asynchronous, or synchronous.  Yes, it is
+  // deeply ugly to write APIs this way, but that still doesn't mean
+  // that the Readable class should behave improperly, as streams are
+  // designed to be sync/async agnostic.
+  // Take note if the _read call is sync or async (ie, if the read call
+  // has returned yet), so that we know whether or not it's safe to emit
+  // 'readable' etc.
+  //
+  // 3. Actually pull the requested chunks out of the buffer and return.
 
-    ch = bh;
-    cl = bl;
+  // if we need a readable event, then we need to do some reading.
+  var doRead = state.needReadable;
+  debug('need readable', doRead);
 
-    bh = ah;
-    bl = al;
+  // if we currently have less than the highWaterMark, then also read some
+  if (state.length === 0 || state.length - n < state.highWaterMark) {
+    doRead = true;
+    debug('length less than watermark', doRead);
+  }
 
-    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
-    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
+  // however, if we've ended, then there's no point, and if we're already
+  // reading, then it's unnecessary.
+  if (state.ended || state.reading) {
+    doRead = false;
+    debug('reading or ended', doRead);
+  } else if (doRead) {
+    debug('do read');
+    state.reading = true;
+    state.sync = true;
+    // if the length is currently zero, then we *need* a readable event.
+    if (state.length === 0) state.needReadable = true;
+    // call internal read method
+    this._read(state.highWaterMark);
+    state.sync = false;
+    // If _read pushed data synchronously, then `reading` will be false,
+    // and we need to re-evaluate how much data we can return to the user.
+    if (!state.reading) n = howMuchToRead(nOrig, state);
   }
 
-  sum64(this.h, 0, ah, al);
-  sum64(this.h, 2, bh, bl);
-  sum64(this.h, 4, ch, cl);
-  sum64(this.h, 6, dh, dl);
-  sum64(this.h, 8, eh, el);
-  sum64(this.h, 10, fh, fl);
-  sum64(this.h, 12, gh, gl);
-  sum64(this.h, 14, hh, hl);
-};
+  var ret;
+  if (n > 0) ret = fromList(n, state);else ret = null;
 
-SHA512.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
+  if (ret === null) {
+    state.needReadable = true;
+    n = 0;
+  } else {
+    state.length -= n;
+  }
 
-function SHA384() {
-  if (!(this instanceof SHA384))
-    return new SHA384();
+  if (state.length === 0) {
+    // If we have nothing in the buffer, then we want to know
+    // as soon as we *do* get something into the buffer.
+    if (!state.ended) state.needReadable = true;
 
-  SHA512.call(this);
-  this.h = [ 0xcbbb9d5d, 0xc1059ed8,
-             0x629a292a, 0x367cd507,
-             0x9159015a, 0x3070dd17,
-             0x152fecd8, 0xf70e5939,
-             0x67332667, 0xffc00b31,
-             0x8eb44a87, 0x68581511,
-             0xdb0c2e0d, 0x64f98fa7,
-             0x47b5481d, 0xbefa4fa4 ];
-}
-utils.inherits(SHA384, SHA512);
-exports.sha384 = SHA384;
+    // If we tried to read() past the EOF, then emit end on the next tick.
+    if (nOrig !== n && state.ended) endReadable(this);
+  }
 
-SHA384.blockSize = 1024;
-SHA384.outSize = 384;
-SHA384.hmacStrength = 192;
-SHA384.padLength = 128;
+  if (ret !== null) this.emit('data', ret);
 
-SHA384.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h.slice(0, 12), 'big');
-  else
-    return utils.split32(this.h.slice(0, 12), 'big');
+  return ret;
 };
 
-function SHA1() {
-  if (!(this instanceof SHA1))
-    return new SHA1();
+function onEofChunk(stream, state) {
+  if (state.ended) return;
+  if (state.decoder) {
+    var chunk = state.decoder.end();
+    if (chunk && chunk.length) {
+      state.buffer.push(chunk);
+      state.length += state.objectMode ? 1 : chunk.length;
+    }
+  }
+  state.ended = true;
 
-  BlockHash.call(this);
-  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe,
-             0x10325476, 0xc3d2e1f0 ];
-  this.W = new Array(80);
+  // emit 'readable' now to make sure it gets picked up.
+  emitReadable(stream);
 }
 
-utils.inherits(SHA1, BlockHash);
-exports.sha1 = SHA1;
+// Don't emit readable right away in sync mode, because this can trigger
+// another read() call => stack overflow.  This way, it might trigger
+// a nextTick recursion warning, but that's not so bad.
+function emitReadable(stream) {
+  var state = stream._readableState;
+  state.needReadable = false;
+  if (!state.emittedReadable) {
+    debug('emitReadable', state.flowing);
+    state.emittedReadable = true;
+    if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
+  }
+}
 
-SHA1.blockSize = 512;
-SHA1.outSize = 160;
-SHA1.hmacStrength = 80;
-SHA1.padLength = 64;
+function emitReadable_(stream) {
+  debug('emit readable');
+  stream.emit('readable');
+  flow(stream);
+}
 
-SHA1.prototype._update = function _update(msg, start) {
-  var W = this.W;
+// at this point, the user has presumably seen the 'readable' event,
+// and called read() to consume some data.  that may have triggered
+// in turn another _read(n) call, in which case reading = true if
+// it's in progress.
+// However, if we're not ended, or reading, and the length < hwm,
+// then go ahead and try to read some more preemptively.
+function maybeReadMore(stream, state) {
+  if (!state.readingMore) {
+    state.readingMore = true;
+    processNextTick(maybeReadMore_, stream, state);
+  }
+}
 
-  for (var i = 0; i < 16; i++)
-    W[i] = msg[start + i];
+function maybeReadMore_(stream, state) {
+  var len = state.length;
+  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
+    debug('maybeReadMore read 0');
+    stream.read(0);
+    if (len === state.length)
+      // didn't get any data, stop spinning.
+      break;else len = state.length;
+  }
+  state.readingMore = false;
+}
 
-  for(; i < W.length; i++)
-    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
+// abstract method.  to be overridden in specific implementation classes.
+// call cb(er, data) where data is <= n in length.
+// for virtual (non-string, non-buffer) streams, "length" is somewhat
+// arbitrary, and perhaps not very meaningful.
+Readable.prototype._read = function (n) {
+  this.emit('error', new Error('_read() is not implemented'));
+};
 
-  var a = this.h[0];
-  var b = this.h[1];
-  var c = this.h[2];
-  var d = this.h[3];
-  var e = this.h[4];
+Readable.prototype.pipe = function (dest, pipeOpts) {
+  var src = this;
+  var state = this._readableState;
 
-  for (var i = 0; i < W.length; i++) {
-    var s = ~~(i / 20);
-    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
-    e = d;
-    d = c;
-    c = rotl32(b, 30);
-    b = a;
-    a = t;
+  switch (state.pipesCount) {
+    case 0:
+      state.pipes = dest;
+      break;
+    case 1:
+      state.pipes = [state.pipes, dest];
+      break;
+    default:
+      state.pipes.push(dest);
+      break;
   }
+  state.pipesCount += 1;
+  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
 
-  this.h[0] = sum32(this.h[0], a);
-  this.h[1] = sum32(this.h[1], b);
-  this.h[2] = sum32(this.h[2], c);
-  this.h[3] = sum32(this.h[3], d);
-  this.h[4] = sum32(this.h[4], e);
-};
-
-SHA1.prototype._digest = function digest(enc) {
-  if (enc === 'hex')
-    return utils.toHex32(this.h, 'big');
-  else
-    return utils.split32(this.h, 'big');
-};
+  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
 
-function ch32(x, y, z) {
-  return (x & y) ^ ((~x) & z);
-}
+  var endFn = doEnd ? onend : unpipe;
+  if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
 
-function maj32(x, y, z) {
-  return (x & y) ^ (x & z) ^ (y & z);
-}
+  dest.on('unpipe', onunpipe);
+  function onunpipe(readable, unpipeInfo) {
+    debug('onunpipe');
+    if (readable === src) {
+      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
+        unpipeInfo.hasUnpiped = true;
+        cleanup();
+      }
+    }
+  }
 
-function p32(x, y, z) {
-  return x ^ y ^ z;
-}
+  function onend() {
+    debug('onend');
+    dest.end();
+  }
 
-function s0_256(x) {
-  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
-}
+  // when the dest drains, it reduces the awaitDrain counter
+  // on the source.  This would be more elegant with a .once()
+  // handler in flow(), but adding and removing repeatedly is
+  // too slow.
+  var ondrain = pipeOnDrain(src);
+  dest.on('drain', ondrain);
 
-function s1_256(x) {
-  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
-}
+  var cleanedUp = false;
+  function cleanup() {
+    debug('cleanup');
+    // cleanup event handlers once the pipe is broken
+    dest.removeListener('close', onclose);
+    dest.removeListener('finish', onfinish);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('error', onerror);
+    dest.removeListener('unpipe', onunpipe);
+    src.removeListener('end', onend);
+    src.removeListener('end', unpipe);
+    src.removeListener('data', ondata);
 
-function g0_256(x) {
-  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
-}
+    cleanedUp = true;
 
-function g1_256(x) {
-  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
-}
+    // if the reader is waiting for a drain event from this
+    // specific writer, then it would cause it to never start
+    // flowing again.
+    // So, if this is awaiting a drain, then we just call it now.
+    // If we don't know, then assume that we are waiting for one.
+    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
+  }
 
-function ft_1(s, x, y, z) {
-  if (s === 0)
-    return ch32(x, y, z);
-  if (s === 1 || s === 3)
-    return p32(x, y, z);
-  if (s === 2)
-    return maj32(x, y, z);
-}
+  // If the user pushes more data while we're writing to dest then we'll end up
+  // in ondata again. However, we only want to increase awaitDrain once because
+  // dest will only emit one 'drain' event for the multiple writes.
+  // => Introduce a guard on increasing awaitDrain.
+  var increasedAwaitDrain = false;
+  src.on('data', ondata);
+  function ondata(chunk) {
+    debug('ondata');
+    increasedAwaitDrain = false;
+    var ret = dest.write(chunk);
+    if (false === ret && !increasedAwaitDrain) {
+      // If the user unpiped during `dest.write()`, it is possible
+      // to get stuck in a permanently paused state if that write
+      // also returned false.
+      // => Check whether `dest` is still a piping destination.
+      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
+        debug('false write response, pause', src._readableState.awaitDrain);
+        src._readableState.awaitDrain++;
+        increasedAwaitDrain = true;
+      }
+      src.pause();
+    }
+  }
 
-function ch64_hi(xh, xl, yh, yl, zh, zl) {
-  var r = (xh & yh) ^ ((~xh) & zh);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // if the dest has an error, then stop piping into it.
+  // however, don't suppress the throwing behavior for this.
+  function onerror(er) {
+    debug('onerror', er);
+    unpipe();
+    dest.removeListener('error', onerror);
+    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
+  }
 
-function ch64_lo(xh, xl, yh, yl, zh, zl) {
-  var r = (xl & yl) ^ ((~xl) & zl);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // Make sure our error handler is attached before userland ones.
+  prependListener(dest, 'error', onerror);
 
-function maj64_hi(xh, xl, yh, yl, zh, zl) {
-  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // Both close and finish should trigger unpipe, but only once.
+  function onclose() {
+    dest.removeListener('finish', onfinish);
+    unpipe();
+  }
+  dest.once('close', onclose);
+  function onfinish() {
+    debug('onfinish');
+    dest.removeListener('close', onclose);
+    unpipe();
+  }
+  dest.once('finish', onfinish);
 
-function maj64_lo(xh, xl, yh, yl, zh, zl) {
-  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  function unpipe() {
+    debug('unpipe');
+    src.unpipe(dest);
+  }
 
-function s0_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 28);
-  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
-  var c2_hi = rotr64_hi(xl, xh, 7);  // 39
+  // tell the dest that it's being piped to
+  dest.emit('pipe', src);
 
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // start the flow if it hasn't been started already.
+  if (!state.flowing) {
+    debug('pipe resume');
+    src.resume();
+  }
 
-function s0_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 28);
-  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
-  var c2_lo = rotr64_lo(xl, xh, 7);  // 39
+  return dest;
+};
 
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
+function pipeOnDrain(src) {
+  return function () {
+    var state = src._readableState;
+    debug('pipeOnDrain', state.awaitDrain);
+    if (state.awaitDrain) state.awaitDrain--;
+    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
+      state.flowing = true;
+      flow(src);
+    }
+  };
 }
 
-function s1_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 14);
-  var c1_hi = rotr64_hi(xh, xl, 18);
-  var c2_hi = rotr64_hi(xl, xh, 9);  // 41
+Readable.prototype.unpipe = function (dest) {
+  var state = this._readableState;
+  var unpipeInfo = { hasUnpiped: false };
 
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // if we're not piping anywhere, then do nothing.
+  if (state.pipesCount === 0) return this;
 
-function s1_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 14);
-  var c1_lo = rotr64_lo(xh, xl, 18);
-  var c2_lo = rotr64_lo(xl, xh, 9);  // 41
+  // just one destination.  most common case.
+  if (state.pipesCount === 1) {
+    // passed in one, but it's not the right one.
+    if (dest && dest !== state.pipes) return this;
 
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+    if (!dest) dest = state.pipes;
 
-function g0_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 1);
-  var c1_hi = rotr64_hi(xh, xl, 8);
-  var c2_hi = shr64_hi(xh, xl, 7);
+    // got a match.
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+    if (dest) dest.emit('unpipe', this, unpipeInfo);
+    return this;
+  }
 
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  // slow case. multiple pipe destinations.
 
-function g0_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 1);
-  var c1_lo = rotr64_lo(xh, xl, 8);
-  var c2_lo = shr64_lo(xh, xl, 7);
+  if (!dest) {
+    // remove all.
+    var dests = state.pipes;
+    var len = state.pipesCount;
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
 
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+    for (var i = 0; i < len; i++) {
+      dests[i].emit('unpipe', this, unpipeInfo);
+    }return this;
+  }
 
-function g1_512_hi(xh, xl) {
-  var c0_hi = rotr64_hi(xh, xl, 19);
-  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
-  var c2_hi = shr64_hi(xh, xl, 6);
+  // try to find the right one.
+  var index = indexOf(state.pipes, dest);
+  if (index === -1) return this;
 
-  var r = c0_hi ^ c1_hi ^ c2_hi;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  state.pipes.splice(index, 1);
+  state.pipesCount -= 1;
+  if (state.pipesCount === 1) state.pipes = state.pipes[0];
 
-function g1_512_lo(xh, xl) {
-  var c0_lo = rotr64_lo(xh, xl, 19);
-  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
-  var c2_lo = shr64_lo(xh, xl, 6);
+  dest.emit('unpipe', this, unpipeInfo);
 
-  var r = c0_lo ^ c1_lo ^ c2_lo;
-  if (r < 0)
-    r += 0x100000000;
-  return r;
-}
+  return this;
+};
 
-},{"../hash":57}],62:[function(require,module,exports){
-var utils = exports;
-var inherits = require('inherits');
+// set up data events if they are asked for
+// Ensure readable listeners eventually get something
+Readable.prototype.on = function (ev, fn) {
+  var res = Stream.prototype.on.call(this, ev, fn);
 
-function toArray(msg, enc) {
-  if (Array.isArray(msg))
-    return msg.slice();
-  if (!msg)
-    return [];
-  var res = [];
-  if (typeof msg === 'string') {
-    if (!enc) {
-      for (var i = 0; i < msg.length; i++) {
-        var c = msg.charCodeAt(i);
-        var hi = c >> 8;
-        var lo = c & 0xff;
-        if (hi)
-          res.push(hi, lo);
-        else
-          res.push(lo);
+  if (ev === 'data') {
+    // Start flowing on next tick if stream isn't explicitly paused
+    if (this._readableState.flowing !== false) this.resume();
+  } else if (ev === 'readable') {
+    var state = this._readableState;
+    if (!state.endEmitted && !state.readableListening) {
+      state.readableListening = state.needReadable = true;
+      state.emittedReadable = false;
+      if (!state.reading) {
+        processNextTick(nReadingNextTick, this);
+      } else if (state.length) {
+        emitReadable(this);
       }
-    } else if (enc === 'hex') {
-      msg = msg.replace(/[^a-z0-9]+/ig, '');
-      if (msg.length % 2 !== 0)
-        msg = '0' + msg;
-      for (var i = 0; i < msg.length; i += 2)
-        res.push(parseInt(msg[i] + msg[i + 1], 16));
     }
-  } else {
-    for (var i = 0; i < msg.length; i++)
-      res[i] = msg[i] | 0;
   }
-  return res;
-}
-utils.toArray = toArray;
 
-function toHex(msg) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++)
-    res += zero2(msg[i].toString(16));
   return res;
-}
-utils.toHex = toHex;
+};
+Readable.prototype.addListener = Readable.prototype.on;
 
-function htonl(w) {
-  var res = (w >>> 24) |
-            ((w >>> 8) & 0xff00) |
-            ((w << 8) & 0xff0000) |
-            ((w & 0xff) << 24);
-  return res >>> 0;
+function nReadingNextTick(self) {
+  debug('readable nexttick read 0');
+  self.read(0);
 }
-utils.htonl = htonl;
 
-function toHex32(msg, endian) {
-  var res = '';
-  for (var i = 0; i < msg.length; i++) {
-    var w = msg[i];
-    if (endian === 'little')
-      w = htonl(w);
-    res += zero8(w.toString(16));
+// pause() and resume() are remnants of the legacy readable stream API
+// If the user uses them, then switch into old mode.
+Readable.prototype.resume = function () {
+  var state = this._readableState;
+  if (!state.flowing) {
+    debug('resume');
+    state.flowing = true;
+    resume(this, state);
   }
-  return res;
-}
-utils.toHex32 = toHex32;
-
-function zero2(word) {
-  if (word.length === 1)
-    return '0' + word;
-  else
-    return word;
-}
-utils.zero2 = zero2;
-
-function zero8(word) {
-  if (word.length === 7)
-    return '0' + word;
-  else if (word.length === 6)
-    return '00' + word;
-  else if (word.length === 5)
-    return '000' + word;
-  else if (word.length === 4)
-    return '0000' + word;
-  else if (word.length === 3)
-    return '00000' + word;
-  else if (word.length === 2)
-    return '000000' + word;
-  else if (word.length === 1)
-    return '0000000' + word;
-  else
-    return word;
-}
-utils.zero8 = zero8;
+  return this;
+};
 
-function join32(msg, start, end, endian) {
-  var len = end - start;
-  assert(len % 4 === 0);
-  var res = new Array(len / 4);
-  for (var i = 0, k = start; i < res.length; i++, k += 4) {
-    var w;
-    if (endian === 'big')
-      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
-    else
-      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
-    res[i] = w >>> 0;
+function resume(stream, state) {
+  if (!state.resumeScheduled) {
+    state.resumeScheduled = true;
+    processNextTick(resume_, stream, state);
   }
-  return res;
 }
-utils.join32 = join32;
 
-function split32(msg, endian) {
-  var res = new Array(msg.length * 4);
-  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
-    var m = msg[i];
-    if (endian === 'big') {
-      res[k] = m >>> 24;
-      res[k + 1] = (m >>> 16) & 0xff;
-      res[k + 2] = (m >>> 8) & 0xff;
-      res[k + 3] = m & 0xff;
-    } else {
-      res[k + 3] = m >>> 24;
-      res[k + 2] = (m >>> 16) & 0xff;
-      res[k + 1] = (m >>> 8) & 0xff;
-      res[k] = m & 0xff;
-    }
+function resume_(stream, state) {
+  if (!state.reading) {
+    debug('resume read 0');
+    stream.read(0);
   }
-  return res;
-}
-utils.split32 = split32;
 
-function rotr32(w, b) {
-  return (w >>> b) | (w << (32 - b));
+  state.resumeScheduled = false;
+  state.awaitDrain = 0;
+  stream.emit('resume');
+  flow(stream);
+  if (state.flowing && !state.reading) stream.read(0);
 }
-utils.rotr32 = rotr32;
 
-function rotl32(w, b) {
-  return (w << b) | (w >>> (32 - b));
-}
-utils.rotl32 = rotl32;
+Readable.prototype.pause = function () {
+  debug('call pause flowing=%j', this._readableState.flowing);
+  if (false !== this._readableState.flowing) {
+    debug('pause');
+    this._readableState.flowing = false;
+    this.emit('pause');
+  }
+  return this;
+};
 
-function sum32(a, b) {
-  return (a + b) >>> 0;
+function flow(stream) {
+  var state = stream._readableState;
+  debug('flow', state.flowing);
+  while (state.flowing && stream.read() !== null) {}
 }
-utils.sum32 = sum32;
 
-function sum32_3(a, b, c) {
-  return (a + b + c) >>> 0;
-}
-utils.sum32_3 = sum32_3;
+// wrap an old-style stream as the async data source.
+// This is *not* part of the readable stream interface.
+// It is an ugly unfortunate mess of history.
+Readable.prototype.wrap = function (stream) {
+  var state = this._readableState;
+  var paused = false;
 
-function sum32_4(a, b, c, d) {
-  return (a + b + c + d) >>> 0;
-}
-utils.sum32_4 = sum32_4;
+  var self = this;
+  stream.on('end', function () {
+    debug('wrapped end');
+    if (state.decoder && !state.ended) {
+      var chunk = state.decoder.end();
+      if (chunk && chunk.length) self.push(chunk);
+    }
 
-function sum32_5(a, b, c, d, e) {
-  return (a + b + c + d + e) >>> 0;
-}
-utils.sum32_5 = sum32_5;
+    self.push(null);
+  });
 
-function assert(cond, msg) {
-  if (!cond)
-    throw new Error(msg || 'Assertion failed');
-}
-utils.assert = assert;
+  stream.on('data', function (chunk) {
+    debug('wrapped data');
+    if (state.decoder) chunk = state.decoder.write(chunk);
 
-utils.inherits = inherits;
+    // don't skip over falsy values in objectMode
+    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
 
-function sum64(buf, pos, ah, al) {
-  var bh = buf[pos];
-  var bl = buf[pos + 1];
+    var ret = self.push(chunk);
+    if (!ret) {
+      paused = true;
+      stream.pause();
+    }
+  });
 
-  var lo = (al + bl) >>> 0;
-  var hi = (lo < al ? 1 : 0) + ah + bh;
-  buf[pos] = hi >>> 0;
-  buf[pos + 1] = lo;
-}
-exports.sum64 = sum64;
+  // proxy all the other methods.
+  // important when wrapping filters and duplexes.
+  for (var i in stream) {
+    if (this[i] === undefined && typeof stream[i] === 'function') {
+      this[i] = function (method) {
+        return function () {
+          return stream[method].apply(stream, arguments);
+        };
+      }(i);
+    }
+  }
 
-function sum64_hi(ah, al, bh, bl) {
-  var lo = (al + bl) >>> 0;
-  var hi = (lo < al ? 1 : 0) + ah + bh;
-  return hi >>> 0;
-};
-exports.sum64_hi = sum64_hi;
+  // proxy certain important events.
+  for (var n = 0; n < kProxyEvents.length; n++) {
+    stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n]));
+  }
 
-function sum64_lo(ah, al, bh, bl) {
-  var lo = al + bl;
-  return lo >>> 0;
+  // when we try to consume some more bytes, simply unpause the
+  // underlying stream.
+  self._read = function (n) {
+    debug('wrapped _read', n);
+    if (paused) {
+      paused = false;
+      stream.resume();
+    }
+  };
+
+  return self;
 };
-exports.sum64_lo = sum64_lo;
 
-function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
-  var carry = 0;
-  var lo = al;
-  lo = (lo + bl) >>> 0;
-  carry += lo < al ? 1 : 0;
-  lo = (lo + cl) >>> 0;
-  carry += lo < cl ? 1 : 0;
-  lo = (lo + dl) >>> 0;
-  carry += lo < dl ? 1 : 0;
+// exposed for testing purposes only.
+Readable._fromList = fromList;
 
-  var hi = ah + bh + ch + dh + carry;
-  return hi >>> 0;
-};
-exports.sum64_4_hi = sum64_4_hi;
+// Pluck off n bytes from an array of buffers.
+// Length is the combined lengths of all the buffers in the list.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromList(n, state) {
+  // nothing buffered
+  if (state.length === 0) return null;
 
-function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
-  var lo = al + bl + cl + dl;
-  return lo >>> 0;
-};
-exports.sum64_4_lo = sum64_4_lo;
+  var ret;
+  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
+    // read it all, truncate the list
+    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
+    state.buffer.clear();
+  } else {
+    // read part of list
+    ret = fromListPartial(n, state.buffer, state.decoder);
+  }
 
-function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
-  var carry = 0;
-  var lo = al;
-  lo = (lo + bl) >>> 0;
-  carry += lo < al ? 1 : 0;
-  lo = (lo + cl) >>> 0;
-  carry += lo < cl ? 1 : 0;
-  lo = (lo + dl) >>> 0;
-  carry += lo < dl ? 1 : 0;
-  lo = (lo + el) >>> 0;
-  carry += lo < el ? 1 : 0;
+  return ret;
+}
 
-  var hi = ah + bh + ch + dh + eh + carry;
-  return hi >>> 0;
-};
-exports.sum64_5_hi = sum64_5_hi;
+// Extracts only enough buffered data to satisfy the amount requested.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromListPartial(n, list, hasStrings) {
+  var ret;
+  if (n < list.head.data.length) {
+    // slice is the same for buffers and strings
+    ret = list.head.data.slice(0, n);
+    list.head.data = list.head.data.slice(n);
+  } else if (n === list.head.data.length) {
+    // first chunk is a perfect match
+    ret = list.shift();
+  } else {
+    // result spans more than one buffer
+    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
+  }
+  return ret;
+}
 
-function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
-  var lo = al + bl + cl + dl + el;
+// Copies a specified amount of characters from the list of buffered data
+// chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBufferString(n, list) {
+  var p = list.head;
+  var c = 1;
+  var ret = p.data;
+  n -= ret.length;
+  while (p = p.next) {
+    var str = p.data;
+    var nb = n > str.length ? str.length : n;
+    if (nb === str.length) ret += str;else ret += str.slice(0, n);
+    n -= nb;
+    if (n === 0) {
+      if (nb === str.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = str.slice(nb);
+      }
+      break;
+    }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
 
-  return lo >>> 0;
-};
-exports.sum64_5_lo = sum64_5_lo;
+// Copies a specified amount of bytes from the list of buffered data chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBuffer(n, list) {
+  var ret = Buffer.allocUnsafe(n);
+  var p = list.head;
+  var c = 1;
+  p.data.copy(ret);
+  n -= p.data.length;
+  while (p = p.next) {
+    var buf = p.data;
+    var nb = n > buf.length ? buf.length : n;
+    buf.copy(ret, ret.length - n, 0, nb);
+    n -= nb;
+    if (n === 0) {
+      if (nb === buf.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = buf.slice(nb);
+      }
+      break;
+    }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
 
-function rotr64_hi(ah, al, num) {
-  var r = (al << (32 - num)) | (ah >>> num);
-  return r >>> 0;
-};
-exports.rotr64_hi = rotr64_hi;
+function endReadable(stream) {
+  var state = stream._readableState;
 
-function rotr64_lo(ah, al, num) {
-  var r = (ah << (32 - num)) | (al >>> num);
-  return r >>> 0;
-};
-exports.rotr64_lo = rotr64_lo;
+  // If we get here before consuming all the bytes, then that is a
+  // bug in node.  Should never happen.
+  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
 
-function shr64_hi(ah, al, num) {
-  return ah >>> num;
-};
-exports.shr64_hi = shr64_hi;
+  if (!state.endEmitted) {
+    state.ended = true;
+    processNextTick(endReadableNT, state, stream);
+  }
+}
 
-function shr64_lo(ah, al, num) {
-  var r = (ah << (32 - num)) | (al >>> num);
-  return r >>> 0;
-};
-exports.shr64_lo = shr64_lo;
+function endReadableNT(state, stream) {
+  // Check that we didn't get one last unshift.
+  if (!state.endEmitted && state.length === 0) {
+    state.endEmitted = true;
+    stream.readable = false;
+    stream.emit('end');
+  }
+}
 
-},{"inherits":63}],63:[function(require,module,exports){
-arguments[4][9][0].apply(exports,arguments)
-},{"dup":9}],64:[function(require,module,exports){
-/**
- * Returns a `Boolean` on whether or not the a `String` starts with '0x'
- * @param {String} str the string input value
- * @return {Boolean} a boolean if it is or is not hex prefixed
- * @throws if the str input is not a string
- */
-module.exports = function isHexPrefixed(str) {
-  if (typeof str !== 'string') {
-    throw new Error("[is-hex-prefixed] value must be type 'string', is currently type " + (typeof str) + ", while checking isHexPrefixed.");
+function forEach(xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
   }
+}
 
-  return str.slice(0, 2) === '0x';
+function indexOf(xs, x) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    if (xs[i] === x) return i;
+  }
+  return -1;
 }
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./_stream_duplex":27,"./internal/streams/BufferList":32,"./internal/streams/destroy":33,"./internal/streams/stream":34,"_process":25,"core-util-is":14,"events":18,"inherits":21,"isarray":23,"process-nextick-args":24,"safe-buffer":40,"string_decoder/":50,"util":4}],30:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// a transform stream is a readable/writable stream where you do
+// something with the data.  Sometimes it's called a "filter",
+// but that's not a great name for it, since that implies a thing where
+// some bits pass through, and others are simply ignored.  (That would
+// be a valid example of a transform, of course.)
+//
+// While the output is causally related to the input, it's not a
+// necessarily symmetric or synchronous transformation.  For example,
+// a zlib stream might take multiple plain-text writes(), and then
+// emit a single compressed chunk some time in the future.
+//
+// Here's how this works:
+//
+// The Transform stream has all the aspects of the readable and writable
+// stream classes.  When you write(chunk), that calls _write(chunk,cb)
+// internally, and returns false if there's a lot of pending writes
+// buffered up.  When you call read(), that calls _read(n) until
+// there's enough pending readable data buffered up.
+//
+// In a transform stream, the written data is placed in a buffer.  When
+// _read(n) is called, it transforms the queued up data, calling the
+// buffered _write cb's as it consumes chunks.  If consuming a single
+// written chunk would result in multiple output chunks, then the first
+// outputted bit calls the readcb, and subsequent chunks just go into
+// the read buffer, and will cause it to emit 'readable' if necessary.
+//
+// This way, back-pressure is actually determined by the reading side,
+// since _read has to be called to start processing a new chunk.  However,
+// a pathological inflate type of transform can cause excessive buffering
+// here.  For example, imagine a stream where every byte of input is
+// interpreted as an integer from 0-255, and then results in that many
+// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
+// 1kb of data being output.  In this case, you could write a very small
+// amount of input, and end up with a very large amount of output.  In
+// such a pathological inflating mechanism, there'd be no way to tell
+// the system to stop doing the transform.  A single 4MB write could
+// cause the system to run out of memory.
+//
+// However, even in such a pathological case, only a single written chunk
+// would be consumed, and then the rest would wait (un-transformed) until
+// the results of the previous transformed chunk were consumed.
 
-},{}],65:[function(require,module,exports){
-'use strict'
-module.exports = require('./lib/api')(require('./lib/keccak'))
+'use strict';
 
-},{"./lib/api":66,"./lib/keccak":70}],66:[function(require,module,exports){
-'use strict'
-var createKeccak = require('./keccak')
-var createShake = require('./shake')
+module.exports = Transform;
 
-module.exports = function (KeccakState) {
-  var Keccak = createKeccak(KeccakState)
-  var Shake = createShake(KeccakState)
+var Duplex = require('./_stream_duplex');
 
-  return function (algorithm, options) {
-    var hash = typeof algorithm === 'string' ? algorithm.toLowerCase() : algorithm
-    switch (hash) {
-      case 'keccak224': return new Keccak(1152, 448, null, 224, options)
-      case 'keccak256': return new Keccak(1088, 512, null, 256, options)
-      case 'keccak384': return new Keccak(832, 768, null, 384, options)
-      case 'keccak512': return new Keccak(576, 1024, null, 512, options)
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-      case 'sha3-224': return new Keccak(1152, 448, 0x06, 224, options)
-      case 'sha3-256': return new Keccak(1088, 512, 0x06, 256, options)
-      case 'sha3-384': return new Keccak(832, 768, 0x06, 384, options)
-      case 'sha3-512': return new Keccak(576, 1024, 0x06, 512, options)
+util.inherits(Transform, Duplex);
 
-      case 'shake128': return new Shake(1344, 256, 0x1f, options)
-      case 'shake256': return new Shake(1088, 512, 0x1f, options)
+function TransformState(stream) {
+  this.afterTransform = function (er, data) {
+    return afterTransform(stream, er, data);
+  };
 
-      default: throw new Error('Invald algorithm: ' + algorithm)
-    }
-  }
+  this.needTransform = false;
+  this.transforming = false;
+  this.writecb = null;
+  this.writechunk = null;
+  this.writeencoding = null;
 }
 
-},{"./keccak":67,"./shake":68}],67:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var Transform = require('stream').Transform
-var inherits = require('inherits')
-
-module.exports = function (KeccakState) {
-  function Keccak (rate, capacity, delimitedSuffix, hashBitLength, options) {
-    Transform.call(this, options)
+function afterTransform(stream, er, data) {
+  var ts = stream._transformState;
+  ts.transforming = false;
 
-    this._rate = rate
-    this._capacity = capacity
-    this._delimitedSuffix = delimitedSuffix
-    this._hashBitLength = hashBitLength
-    this._options = options
+  var cb = ts.writecb;
 
-    this._state = new KeccakState()
-    this._state.initialize(rate, capacity)
-    this._finalized = false
+  if (!cb) {
+    return stream.emit('error', new Error('write callback called multiple times'));
   }
 
-  inherits(Keccak, Transform)
-
-  Keccak.prototype._transform = function (chunk, encoding, callback) {
-    var error = null
-    try {
-      this.update(chunk, encoding)
-    } catch (err) {
-      error = err
-    }
+  ts.writechunk = null;
+  ts.writecb = null;
 
-    callback(error)
-  }
+  if (data !== null && data !== undefined) stream.push(data);
 
-  Keccak.prototype._flush = function (callback) {
-    var error = null
-    try {
-      this.push(this.digest())
-    } catch (err) {
-      error = err
-    }
+  cb(er);
 
-    callback(error)
+  var rs = stream._readableState;
+  rs.reading = false;
+  if (rs.needReadable || rs.length < rs.highWaterMark) {
+    stream._read(rs.highWaterMark);
   }
+}
 
-  Keccak.prototype.update = function (data, encoding) {
-    if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
-    if (this._finalized) throw new Error('Digest already called')
-    if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
-
-    this._state.absorb(data)
-
-    return this
-  }
+function Transform(options) {
+  if (!(this instanceof Transform)) return new Transform(options);
 
-  Keccak.prototype.digest = function (encoding) {
-    if (this._finalized) throw new Error('Digest already called')
-    this._finalized = true
+  Duplex.call(this, options);
 
-    if (this._delimitedSuffix) this._state.absorbLastFewBits(this._delimitedSuffix)
-    var digest = this._state.squeeze(this._hashBitLength / 8)
-    if (encoding !== undefined) digest = digest.toString(encoding)
+  this._transformState = new TransformState(this);
 
-    this._resetState()
+  var stream = this;
 
-    return digest
-  }
+  // start out asking for a readable event once data is transformed.
+  this._readableState.needReadable = true;
 
-  // remove result from memory
-  Keccak.prototype._resetState = function () {
-    this._state.initialize(this._rate, this._capacity)
-    return this
-  }
+  // we have implemented the _read method, and done the other things
+  // that Readable wants before the first _read call, so unset the
+  // sync guard flag.
+  this._readableState.sync = false;
 
-  // because sometimes we need hash right now and little later
-  Keccak.prototype._clone = function () {
-    var clone = new Keccak(this._rate, this._capacity, this._delimitedSuffix, this._hashBitLength, this._options)
-    this._state.copy(clone._state)
-    clone._finalized = this._finalized
+  if (options) {
+    if (typeof options.transform === 'function') this._transform = options.transform;
 
-    return clone
+    if (typeof options.flush === 'function') this._flush = options.flush;
   }
 
-  return Keccak
+  // When the writable side finishes, then flush out anything remaining.
+  this.once('prefinish', function () {
+    if (typeof this._flush === 'function') this._flush(function (er, data) {
+      done(stream, er, data);
+    });else done(stream);
+  });
 }
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":5,"inherits":63,"stream":25}],68:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var Transform = require('stream').Transform
-var inherits = require('inherits')
-
-module.exports = function (KeccakState) {
-  function Shake (rate, capacity, delimitedSuffix, options) {
-    Transform.call(this, options)
+Transform.prototype.push = function (chunk, encoding) {
+  this._transformState.needTransform = false;
+  return Duplex.prototype.push.call(this, chunk, encoding);
+};
 
-    this._rate = rate
-    this._capacity = capacity
-    this._delimitedSuffix = delimitedSuffix
-    this._options = options
+// This is the part where you do stuff!
+// override this function in implementation classes.
+// 'chunk' is an input chunk.
+//
+// Call `push(newChunk)` to pass along transformed output
+// to the readable side.  You may call 'push' zero or more times.
+//
+// Call `cb(err)` when you are done with this chunk.  If you pass
+// an error, then that'll put the hurt on the whole operation.  If you
+// never call cb(), then you'll never get another chunk.
+Transform.prototype._transform = function (chunk, encoding, cb) {
+  throw new Error('_transform() is not implemented');
+};
 
-    this._state = new KeccakState()
-    this._state.initialize(rate, capacity)
-    this._finalized = false
+Transform.prototype._write = function (chunk, encoding, cb) {
+  var ts = this._transformState;
+  ts.writecb = cb;
+  ts.writechunk = chunk;
+  ts.writeencoding = encoding;
+  if (!ts.transforming) {
+    var rs = this._readableState;
+    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
   }
+};
 
-  inherits(Shake, Transform)
-
-  Shake.prototype._transform = function (chunk, encoding, callback) {
-    var error = null
-    try {
-      this.update(chunk, encoding)
-    } catch (err) {
-      error = err
-    }
+// Doesn't matter what the args are here.
+// _transform does all the work.
+// That we got here means that the readable side wants more data.
+Transform.prototype._read = function (n) {
+  var ts = this._transformState;
 
-    callback(error)
+  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
+    ts.transforming = true;
+    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
+  } else {
+    // mark that we need a transform, so that any data that comes in
+    // will get processed, now that we've asked for it.
+    ts.needTransform = true;
   }
+};
 
-  Shake.prototype._flush = function () {}
+Transform.prototype._destroy = function (err, cb) {
+  var _this = this;
 
-  Shake.prototype._read = function (size) {
-    this.push(this.squeeze(size))
-  }
+  Duplex.prototype._destroy.call(this, err, function (err2) {
+    cb(err2);
+    _this.emit('close');
+  });
+};
 
-  Shake.prototype.update = function (data, encoding) {
-    if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
-    if (this._finalized) throw new Error('Squeeze already called')
-    if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
+function done(stream, er, data) {
+  if (er) return stream.emit('error', er);
 
-    this._state.absorb(data)
+  if (data !== null && data !== undefined) stream.push(data);
 
-    return this
-  }
+  // if there's nothing in the write buffer, then that means
+  // that nothing more will ever be provided
+  var ws = stream._writableState;
+  var ts = stream._transformState;
 
-  Shake.prototype.squeeze = function (dataByteLength, encoding) {
-    if (!this._finalized) {
-      this._finalized = true
-      this._state.absorbLastFewBits(this._delimitedSuffix)
-    }
+  if (ws.length) throw new Error('Calling transform done when ws.length != 0');
 
-    var data = this._state.squeeze(dataByteLength)
-    if (encoding !== undefined) data = data.toString(encoding)
+  if (ts.transforming) throw new Error('Calling transform done when still transforming');
 
-    return data
-  }
+  return stream.push(null);
+}
+},{"./_stream_duplex":27,"core-util-is":14,"inherits":21}],31:[function(require,module,exports){
+(function (process,global){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  Shake.prototype._resetState = function () {
-    this._state.initialize(this._rate, this._capacity)
-    return this
-  }
+// A bit simpler than readable streams.
+// Implement an async ._write(chunk, encoding, cb), and it'll handle all
+// the drain event emission and buffering.
 
-  Shake.prototype._clone = function () {
-    var clone = new Shake(this._rate, this._capacity, this._delimitedSuffix, this._options)
-    this._state.copy(clone._state)
-    clone._finalized = this._finalized
+'use strict';
 
-    return clone
-  }
+/*<replacement>*/
 
-  return Shake
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
+
+module.exports = Writable;
+
+/* <replacement> */
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+  this.next = null;
 }
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":5,"inherits":63,"stream":25}],69:[function(require,module,exports){
-'use strict'
-var P1600_ROUND_CONSTANTS = [1, 0, 32898, 0, 32906, 2147483648, 2147516416, 2147483648, 32907, 0, 2147483649, 0, 2147516545, 2147483648, 32777, 2147483648, 138, 0, 136, 0, 2147516425, 0, 2147483658, 0, 2147516555, 0, 139, 2147483648, 32905, 2147483648, 32771, 2147483648, 32770, 2147483648, 128, 2147483648, 32778, 0, 2147483658, 2147483648, 2147516545, 2147483648, 32896, 2147483648, 2147483649, 0, 2147516424, 2147483648]
+// It seems a linked list but it is not
+// there will be only 2 of these for each stream
+function CorkedRequest(state) {
+  var _this = this;
 
-exports.p1600 = function (s) {
-  for (var round = 0; round < 24; ++round) {
-    // theta
-    var lo0 = s[0] ^ s[10] ^ s[20] ^ s[30] ^ s[40]
-    var hi0 = s[1] ^ s[11] ^ s[21] ^ s[31] ^ s[41]
-    var lo1 = s[2] ^ s[12] ^ s[22] ^ s[32] ^ s[42]
-    var hi1 = s[3] ^ s[13] ^ s[23] ^ s[33] ^ s[43]
-    var lo2 = s[4] ^ s[14] ^ s[24] ^ s[34] ^ s[44]
-    var hi2 = s[5] ^ s[15] ^ s[25] ^ s[35] ^ s[45]
-    var lo3 = s[6] ^ s[16] ^ s[26] ^ s[36] ^ s[46]
-    var hi3 = s[7] ^ s[17] ^ s[27] ^ s[37] ^ s[47]
-    var lo4 = s[8] ^ s[18] ^ s[28] ^ s[38] ^ s[48]
-    var hi4 = s[9] ^ s[19] ^ s[29] ^ s[39] ^ s[49]
+  this.next = null;
+  this.entry = null;
+  this.finish = function () {
+    onCorkedFinish(_this, state);
+  };
+}
+/* </replacement> */
 
-    var lo = lo4 ^ (lo1 << 1 | hi1 >>> 31)
-    var hi = hi4 ^ (hi1 << 1 | lo1 >>> 31)
-    var t1slo0 = s[0] ^ lo
-    var t1shi0 = s[1] ^ hi
-    var t1slo5 = s[10] ^ lo
-    var t1shi5 = s[11] ^ hi
-    var t1slo10 = s[20] ^ lo
-    var t1shi10 = s[21] ^ hi
-    var t1slo15 = s[30] ^ lo
-    var t1shi15 = s[31] ^ hi
-    var t1slo20 = s[40] ^ lo
-    var t1shi20 = s[41] ^ hi
-    lo = lo0 ^ (lo2 << 1 | hi2 >>> 31)
-    hi = hi0 ^ (hi2 << 1 | lo2 >>> 31)
-    var t1slo1 = s[2] ^ lo
-    var t1shi1 = s[3] ^ hi
-    var t1slo6 = s[12] ^ lo
-    var t1shi6 = s[13] ^ hi
-    var t1slo11 = s[22] ^ lo
-    var t1shi11 = s[23] ^ hi
-    var t1slo16 = s[32] ^ lo
-    var t1shi16 = s[33] ^ hi
-    var t1slo21 = s[42] ^ lo
-    var t1shi21 = s[43] ^ hi
-    lo = lo1 ^ (lo3 << 1 | hi3 >>> 31)
-    hi = hi1 ^ (hi3 << 1 | lo3 >>> 31)
-    var t1slo2 = s[4] ^ lo
-    var t1shi2 = s[5] ^ hi
-    var t1slo7 = s[14] ^ lo
-    var t1shi7 = s[15] ^ hi
-    var t1slo12 = s[24] ^ lo
-    var t1shi12 = s[25] ^ hi
-    var t1slo17 = s[34] ^ lo
-    var t1shi17 = s[35] ^ hi
-    var t1slo22 = s[44] ^ lo
-    var t1shi22 = s[45] ^ hi
-    lo = lo2 ^ (lo4 << 1 | hi4 >>> 31)
-    hi = hi2 ^ (hi4 << 1 | lo4 >>> 31)
-    var t1slo3 = s[6] ^ lo
-    var t1shi3 = s[7] ^ hi
-    var t1slo8 = s[16] ^ lo
-    var t1shi8 = s[17] ^ hi
-    var t1slo13 = s[26] ^ lo
-    var t1shi13 = s[27] ^ hi
-    var t1slo18 = s[36] ^ lo
-    var t1shi18 = s[37] ^ hi
-    var t1slo23 = s[46] ^ lo
-    var t1shi23 = s[47] ^ hi
-    lo = lo3 ^ (lo0 << 1 | hi0 >>> 31)
-    hi = hi3 ^ (hi0 << 1 | lo0 >>> 31)
-    var t1slo4 = s[8] ^ lo
-    var t1shi4 = s[9] ^ hi
-    var t1slo9 = s[18] ^ lo
-    var t1shi9 = s[19] ^ hi
-    var t1slo14 = s[28] ^ lo
-    var t1shi14 = s[29] ^ hi
-    var t1slo19 = s[38] ^ lo
-    var t1shi19 = s[39] ^ hi
-    var t1slo24 = s[48] ^ lo
-    var t1shi24 = s[49] ^ hi
+/*<replacement>*/
+var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
+/*</replacement>*/
 
-    // rho & pi
-    var t2slo0 = t1slo0
-    var t2shi0 = t1shi0
-    var t2slo16 = (t1shi5 << 4 | t1slo5 >>> 28)
-    var t2shi16 = (t1slo5 << 4 | t1shi5 >>> 28)
-    var t2slo7 = (t1slo10 << 3 | t1shi10 >>> 29)
-    var t2shi7 = (t1shi10 << 3 | t1slo10 >>> 29)
-    var t2slo23 = (t1shi15 << 9 | t1slo15 >>> 23)
-    var t2shi23 = (t1slo15 << 9 | t1shi15 >>> 23)
-    var t2slo14 = (t1slo20 << 18 | t1shi20 >>> 14)
-    var t2shi14 = (t1shi20 << 18 | t1slo20 >>> 14)
-    var t2slo10 = (t1slo1 << 1 | t1shi1 >>> 31)
-    var t2shi10 = (t1shi1 << 1 | t1slo1 >>> 31)
-    var t2slo1 = (t1shi6 << 12 | t1slo6 >>> 20)
-    var t2shi1 = (t1slo6 << 12 | t1shi6 >>> 20)
-    var t2slo17 = (t1slo11 << 10 | t1shi11 >>> 22)
-    var t2shi17 = (t1shi11 << 10 | t1slo11 >>> 22)
-    var t2slo8 = (t1shi16 << 13 | t1slo16 >>> 19)
-    var t2shi8 = (t1slo16 << 13 | t1shi16 >>> 19)
-    var t2slo24 = (t1slo21 << 2 | t1shi21 >>> 30)
-    var t2shi24 = (t1shi21 << 2 | t1slo21 >>> 30)
-    var t2slo20 = (t1shi2 << 30 | t1slo2 >>> 2)
-    var t2shi20 = (t1slo2 << 30 | t1shi2 >>> 2)
-    var t2slo11 = (t1slo7 << 6 | t1shi7 >>> 26)
-    var t2shi11 = (t1shi7 << 6 | t1slo7 >>> 26)
-    var t2slo2 = (t1shi12 << 11 | t1slo12 >>> 21)
-    var t2shi2 = (t1slo12 << 11 | t1shi12 >>> 21)
-    var t2slo18 = (t1slo17 << 15 | t1shi17 >>> 17)
-    var t2shi18 = (t1shi17 << 15 | t1slo17 >>> 17)
-    var t2slo9 = (t1shi22 << 29 | t1slo22 >>> 3)
-    var t2shi9 = (t1slo22 << 29 | t1shi22 >>> 3)
-    var t2slo5 = (t1slo3 << 28 | t1shi3 >>> 4)
-    var t2shi5 = (t1shi3 << 28 | t1slo3 >>> 4)
-    var t2slo21 = (t1shi8 << 23 | t1slo8 >>> 9)
-    var t2shi21 = (t1slo8 << 23 | t1shi8 >>> 9)
-    var t2slo12 = (t1slo13 << 25 | t1shi13 >>> 7)
-    var t2shi12 = (t1shi13 << 25 | t1slo13 >>> 7)
-    var t2slo3 = (t1slo18 << 21 | t1shi18 >>> 11)
-    var t2shi3 = (t1shi18 << 21 | t1slo18 >>> 11)
-    var t2slo19 = (t1shi23 << 24 | t1slo23 >>> 8)
-    var t2shi19 = (t1slo23 << 24 | t1shi23 >>> 8)
-    var t2slo15 = (t1slo4 << 27 | t1shi4 >>> 5)
-    var t2shi15 = (t1shi4 << 27 | t1slo4 >>> 5)
-    var t2slo6 = (t1slo9 << 20 | t1shi9 >>> 12)
-    var t2shi6 = (t1shi9 << 20 | t1slo9 >>> 12)
-    var t2slo22 = (t1shi14 << 7 | t1slo14 >>> 25)
-    var t2shi22 = (t1slo14 << 7 | t1shi14 >>> 25)
-    var t2slo13 = (t1slo19 << 8 | t1shi19 >>> 24)
-    var t2shi13 = (t1shi19 << 8 | t1slo19 >>> 24)
-    var t2slo4 = (t1slo24 << 14 | t1shi24 >>> 18)
-    var t2shi4 = (t1shi24 << 14 | t1slo24 >>> 18)
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
 
-    // chi
-    s[0] = t2slo0 ^ (~t2slo1 & t2slo2)
-    s[1] = t2shi0 ^ (~t2shi1 & t2shi2)
-    s[10] = t2slo5 ^ (~t2slo6 & t2slo7)
-    s[11] = t2shi5 ^ (~t2shi6 & t2shi7)
-    s[20] = t2slo10 ^ (~t2slo11 & t2slo12)
-    s[21] = t2shi10 ^ (~t2shi11 & t2shi12)
-    s[30] = t2slo15 ^ (~t2slo16 & t2slo17)
-    s[31] = t2shi15 ^ (~t2shi16 & t2shi17)
-    s[40] = t2slo20 ^ (~t2slo21 & t2slo22)
-    s[41] = t2shi20 ^ (~t2shi21 & t2shi22)
-    s[2] = t2slo1 ^ (~t2slo2 & t2slo3)
-    s[3] = t2shi1 ^ (~t2shi2 & t2shi3)
-    s[12] = t2slo6 ^ (~t2slo7 & t2slo8)
-    s[13] = t2shi6 ^ (~t2shi7 & t2shi8)
-    s[22] = t2slo11 ^ (~t2slo12 & t2slo13)
-    s[23] = t2shi11 ^ (~t2shi12 & t2shi13)
-    s[32] = t2slo16 ^ (~t2slo17 & t2slo18)
-    s[33] = t2shi16 ^ (~t2shi17 & t2shi18)
-    s[42] = t2slo21 ^ (~t2slo22 & t2slo23)
-    s[43] = t2shi21 ^ (~t2shi22 & t2shi23)
-    s[4] = t2slo2 ^ (~t2slo3 & t2slo4)
-    s[5] = t2shi2 ^ (~t2shi3 & t2shi4)
-    s[14] = t2slo7 ^ (~t2slo8 & t2slo9)
-    s[15] = t2shi7 ^ (~t2shi8 & t2shi9)
-    s[24] = t2slo12 ^ (~t2slo13 & t2slo14)
-    s[25] = t2shi12 ^ (~t2shi13 & t2shi14)
-    s[34] = t2slo17 ^ (~t2slo18 & t2slo19)
-    s[35] = t2shi17 ^ (~t2shi18 & t2shi19)
-    s[44] = t2slo22 ^ (~t2slo23 & t2slo24)
-    s[45] = t2shi22 ^ (~t2shi23 & t2shi24)
-    s[6] = t2slo3 ^ (~t2slo4 & t2slo0)
-    s[7] = t2shi3 ^ (~t2shi4 & t2shi0)
-    s[16] = t2slo8 ^ (~t2slo9 & t2slo5)
-    s[17] = t2shi8 ^ (~t2shi9 & t2shi5)
-    s[26] = t2slo13 ^ (~t2slo14 & t2slo10)
-    s[27] = t2shi13 ^ (~t2shi14 & t2shi10)
-    s[36] = t2slo18 ^ (~t2slo19 & t2slo15)
-    s[37] = t2shi18 ^ (~t2shi19 & t2shi15)
-    s[46] = t2slo23 ^ (~t2slo24 & t2slo20)
-    s[47] = t2shi23 ^ (~t2shi24 & t2shi20)
-    s[8] = t2slo4 ^ (~t2slo0 & t2slo1)
-    s[9] = t2shi4 ^ (~t2shi0 & t2shi1)
-    s[18] = t2slo9 ^ (~t2slo5 & t2slo6)
-    s[19] = t2shi9 ^ (~t2shi5 & t2shi6)
-    s[28] = t2slo14 ^ (~t2slo10 & t2slo11)
-    s[29] = t2shi14 ^ (~t2shi10 & t2shi11)
-    s[38] = t2slo19 ^ (~t2slo15 & t2slo16)
-    s[39] = t2shi19 ^ (~t2shi15 & t2shi16)
-    s[48] = t2slo24 ^ (~t2slo20 & t2slo21)
-    s[49] = t2shi24 ^ (~t2shi20 & t2shi21)
+Writable.WritableState = WritableState;
 
-    // iota
-    s[0] ^= P1600_ROUND_CONSTANTS[round * 2]
-    s[1] ^= P1600_ROUND_CONSTANTS[round * 2 + 1]
-  }
-}
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-},{}],70:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var keccakState = require('./keccak-state-unroll')
+/*<replacement>*/
+var internalUtil = {
+  deprecate: require('util-deprecate')
+};
+/*</replacement>*/
 
-function Keccak () {
-  // much faster than `new Array(50)`
-  this.state = [
-    0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0
-  ]
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
 
-  this.blockSize = null
-  this.count = 0
-  this.squeezing = false
+/*<replacement>*/
+var Buffer = require('safe-buffer').Buffer;
+var OurUint8Array = global.Uint8Array || function () {};
+function _uint8ArrayToBuffer(chunk) {
+  return Buffer.from(chunk);
 }
-
-Keccak.prototype.initialize = function (rate, capacity) {
-  for (var i = 0; i < 50; ++i) this.state[i] = 0
-  this.blockSize = rate / 8
-  this.count = 0
-  this.squeezing = false
+function _isUint8Array(obj) {
+  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
 }
+/*</replacement>*/
 
-Keccak.prototype.absorb = function (data) {
-  for (var i = 0; i < data.length; ++i) {
-    this.state[~~(this.count / 4)] ^= data[i] << (8 * (this.count % 4))
-    this.count += 1
-    if (this.count === this.blockSize) {
-      keccakState.p1600(this.state)
-      this.count = 0
-    }
-  }
-}
+var destroyImpl = require('./internal/streams/destroy');
 
-Keccak.prototype.absorbLastFewBits = function (bits) {
-  this.state[~~(this.count / 4)] ^= bits << (8 * (this.count % 4))
-  if ((bits & 0x80) !== 0 && this.count === (this.blockSize - 1)) keccakState.p1600(this.state)
-  this.state[~~((this.blockSize - 1) / 4)] ^= 0x80 << (8 * ((this.blockSize - 1) % 4))
-  keccakState.p1600(this.state)
-  this.count = 0
-  this.squeezing = true
-}
+util.inherits(Writable, Stream);
 
-Keccak.prototype.squeeze = function (length) {
-  if (!this.squeezing) this.absorbLastFewBits(0x01)
+function nop() {}
 
-  var output = Buffer.allocUnsafe(length)
-  for (var i = 0; i < length; ++i) {
-    output[i] = (this.state[~~(this.count / 4)] >>> (8 * (this.count % 4))) & 0xff
-    this.count += 1
-    if (this.count === this.blockSize) {
-      keccakState.p1600(this.state)
-      this.count = 0
-    }
-  }
+function WritableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-  return output
-}
+  options = options || {};
 
-Keccak.prototype.copy = function (dest) {
-  for (var i = 0; i < 50; ++i) dest.state[i] = this.state[i]
-  dest.blockSize = this.blockSize
-  dest.count = this.count
-  dest.squeezing = this.squeezing
-}
+  // object stream flag to indicate whether or not this stream
+  // contains buffers or objects.
+  this.objectMode = !!options.objectMode;
 
-module.exports = Keccak
+  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
 
-}).call(this,require("buffer").Buffer)
-},{"./keccak-state-unroll":69,"buffer":5}],71:[function(require,module,exports){
-(function (Buffer){
-/*
-CryptoJS v3.1.2
-code.google.com/p/crypto-js
-(c) 2009-2013 by Jeff Mott. All rights reserved.
-code.google.com/p/crypto-js/wiki/License
-*/
-/** @preserve
-(c) 2012 by Cédric Mesnil. All rights reserved.
+  // the point at which write() starts returning false
+  // Note: 0 is a valid value, means that we always return false if
+  // the entire buffer is not flushed immediately on write()
+  var hwm = options.highWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+  // cast to ints.
+  this.highWaterMark = Math.floor(this.highWaterMark);
 
-    - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-    - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+  // if _final has been called
+  this.finalCalled = false;
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+  // drain event flag.
+  this.needDrain = false;
+  // at the start of calling end()
+  this.ending = false;
+  // when end() has been called, and returned
+  this.ended = false;
+  // when 'finish' is emitted
+  this.finished = false;
 
-// constants table
-var zl = [
-  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
-  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
-  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
-  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
-]
+  // has it been destroyed
+  this.destroyed = false;
 
-var zr = [
-  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
-  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
-  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
-  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
-  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
-]
+  // should we decode strings into buffers before passing to _write?
+  // this is here so that some node-core streams can optimize string
+  // handling at a lower level.
+  var noDecode = options.decodeStrings === false;
+  this.decodeStrings = !noDecode;
 
-var sl = [
-  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
-  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
-  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
-  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
-  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
-]
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
 
-var sr = [
-  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
-  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
-  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
-  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
-  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
-]
+  // not an actual buffer we keep track of, but a measurement
+  // of how much we're waiting to get pushed to some underlying
+  // socket or file.
+  this.length = 0;
 
-var hl = [0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E]
-var hr = [0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000]
+  // a flag to see when we're in the middle of a write.
+  this.writing = false;
 
-function bytesToWords (bytes) {
-  var words = []
-  for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
-    words[b >>> 5] |= bytes[i] << (24 - b % 32)
-  }
-  return words
-}
+  // when true all writes will be buffered until .uncork() call
+  this.corked = 0;
 
-function wordsToBytes (words) {
-  var bytes = []
-  for (var b = 0; b < words.length * 32; b += 8) {
-    bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF)
-  }
-  return bytes
-}
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, because any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
 
-function processBlock (H, M, offset) {
-  // swap endian
-  for (var i = 0; i < 16; i++) {
-    var offset_i = offset + i
-    var M_offset_i = M[offset_i]
+  // a flag to know if we're processing previously buffered items, which
+  // may call the _write() callback in the same tick, so that we don't
+  // end up in an overlapped onwrite situation.
+  this.bufferProcessing = false;
 
-    // Swap
-    M[offset_i] = (
-      (((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
-      (((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
-    )
-  }
+  // the callback that's passed to _write(chunk,cb)
+  this.onwrite = function (er) {
+    onwrite(stream, er);
+  };
 
-  // Working variables
-  var al, bl, cl, dl, el
-  var ar, br, cr, dr, er
+  // the callback that the user supplies to write(chunk,encoding,cb)
+  this.writecb = null;
 
-  ar = al = H[0]
-  br = bl = H[1]
-  cr = cl = H[2]
-  dr = dl = H[3]
-  er = el = H[4]
+  // the amount that is being written when _write is called.
+  this.writelen = 0;
 
-  // computation
-  var t
-  for (i = 0; i < 80; i += 1) {
-    t = (al + M[offset + zl[i]]) | 0
-    if (i < 16) {
-      t += f1(bl, cl, dl) + hl[0]
-    } else if (i < 32) {
-      t += f2(bl, cl, dl) + hl[1]
-    } else if (i < 48) {
-      t += f3(bl, cl, dl) + hl[2]
-    } else if (i < 64) {
-      t += f4(bl, cl, dl) + hl[3]
-    } else {// if (i<80) {
-      t += f5(bl, cl, dl) + hl[4]
-    }
-    t = t | 0
-    t = rotl(t, sl[i])
-    t = (t + el) | 0
-    al = el
-    el = dl
-    dl = rotl(cl, 10)
-    cl = bl
-    bl = t
+  this.bufferedRequest = null;
+  this.lastBufferedRequest = null;
 
-    t = (ar + M[offset + zr[i]]) | 0
-    if (i < 16) {
-      t += f5(br, cr, dr) + hr[0]
-    } else if (i < 32) {
-      t += f4(br, cr, dr) + hr[1]
-    } else if (i < 48) {
-      t += f3(br, cr, dr) + hr[2]
-    } else if (i < 64) {
-      t += f2(br, cr, dr) + hr[3]
-    } else {// if (i<80) {
-      t += f1(br, cr, dr) + hr[4]
-    }
+  // number of pending user-supplied write callbacks
+  // this must be 0 before 'finish' can be emitted
+  this.pendingcb = 0;
 
-    t = t | 0
-    t = rotl(t, sr[i])
-    t = (t + er) | 0
-    ar = er
-    er = dr
-    dr = rotl(cr, 10)
-    cr = br
-    br = t
-  }
+  // emit prefinish if the only thing we're waiting for is _write cbs
+  // This is relevant for synchronous Transform streams
+  this.prefinished = false;
 
-  // intermediate hash value
-  t = (H[1] + cl + dr) | 0
-  H[1] = (H[2] + dl + er) | 0
-  H[2] = (H[3] + el + ar) | 0
-  H[3] = (H[4] + al + br) | 0
-  H[4] = (H[0] + bl + cr) | 0
-  H[0] = t
-}
+  // True if the error was already emitted and should not be thrown again
+  this.errorEmitted = false;
 
-function f1 (x, y, z) {
-  return ((x) ^ (y) ^ (z))
-}
+  // count buffered requests
+  this.bufferedRequestCount = 0;
 
-function f2 (x, y, z) {
-  return (((x) & (y)) | ((~x) & (z)))
+  // allocate the first CorkedRequest, there is always
+  // one allocated and free to use, and we maintain at most two
+  this.corkedRequestsFree = new CorkedRequest(this);
 }
 
-function f3 (x, y, z) {
-  return (((x) | (~(y))) ^ (z))
-}
+WritableState.prototype.getBuffer = function getBuffer() {
+  var current = this.bufferedRequest;
+  var out = [];
+  while (current) {
+    out.push(current);
+    current = current.next;
+  }
+  return out;
+};
 
-function f4 (x, y, z) {
-  return (((x) & (z)) | ((y) & (~(z))))
-}
+(function () {
+  try {
+    Object.defineProperty(WritableState.prototype, 'buffer', {
+      get: internalUtil.deprecate(function () {
+        return this.getBuffer();
+      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
+    });
+  } catch (_) {}
+})();
 
-function f5 (x, y, z) {
-  return ((x) ^ ((y) | (~(z))))
-}
+// Test _writableState for inheritance to account for Duplex streams,
+// whose prototype chain only points to Readable.
+var realHasInstance;
+if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
+  realHasInstance = Function.prototype[Symbol.hasInstance];
+  Object.defineProperty(Writable, Symbol.hasInstance, {
+    value: function (object) {
+      if (realHasInstance.call(this, object)) return true;
 
-function rotl (x, n) {
-  return (x << n) | (x >>> (32 - n))
+      return object && object._writableState instanceof WritableState;
+    }
+  });
+} else {
+  realHasInstance = function (object) {
+    return object instanceof this;
+  };
 }
 
-function ripemd160 (message) {
-  var H = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]
+function Writable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-  if (typeof message === 'string') {
-    message = new Buffer(message, 'utf8')
+  // Writable ctor is applied to Duplexes, too.
+  // `realHasInstance` is necessary because using plain `instanceof`
+  // would return false, as no `_writableState` property is attached.
+
+  // Trying to use the custom `instanceof` for Writable here will also break the
+  // Node.js LazyTransform implementation, which has a non-trivial getter for
+  // `_writableState` that would lead to infinite recursion.
+  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
+    return new Writable(options);
   }
 
-  var m = bytesToWords(message)
+  this._writableState = new WritableState(options, this);
 
-  var nBitsLeft = message.length * 8
-  var nBitsTotal = message.length * 8
+  // legacy.
+  this.writable = true;
 
-  // Add padding
-  m[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32)
-  m[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
-    (((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff) |
-    (((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00)
-  )
+  if (options) {
+    if (typeof options.write === 'function') this._write = options.write;
 
-  for (var i = 0; i < m.length; i += 16) {
-    processBlock(H, m, i)
-  }
+    if (typeof options.writev === 'function') this._writev = options.writev;
 
-  // swap endian
-  for (i = 0; i < 5; i++) {
-    // shortcut
-    var H_i = H[i]
+    if (typeof options.destroy === 'function') this._destroy = options.destroy;
 
-    // Swap
-    H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
-      (((H_i << 24) | (H_i >>> 8)) & 0xff00ff00)
+    if (typeof options.final === 'function') this._final = options.final;
   }
 
-  var digestbytes = wordsToBytes(H)
-  return new Buffer(digestbytes)
-}
-
-module.exports = ripemd160
-
-}).call(this,require("buffer").Buffer)
-},{"buffer":5}],72:[function(require,module,exports){
-(function (Buffer){
-const assert = require('assert')
-/**
- * RLP Encoding based on: https://github.com/ethereum/wiki/wiki/%5BEnglish%5D-RLP
- * This function takes in a data, convert it to buffer if not, and a length for recursion
- *
- * @param {Buffer,String,Integer,Array} data - will be converted to buffer
- * @returns {Buffer} - returns buffer of encoded data
- **/
-exports.encode = function (input) {
-  if (input instanceof Array) {
-    var output = []
-    for (var i = 0; i < input.length; i++) {
-      output.push(exports.encode(input[i]))
-    }
-    var buf = Buffer.concat(output)
-    return Buffer.concat([encodeLength(buf.length, 192), buf])
-  } else {
-    input = toBuffer(input)
-    if (input.length === 1 && input[0] < 128) {
-      return input
-    } else {
-      return Buffer.concat([encodeLength(input.length, 128), input])
-    }
-  }
+  Stream.call(this);
 }
 
-function safeParseInt (v, base) {
-  if (v.slice(0, 2) === '00') {
-    throw (new Error('invalid RLP: extra zeros'))
-  }
+// Otherwise people can pipe Writable streams, which is just wrong.
+Writable.prototype.pipe = function () {
+  this.emit('error', new Error('Cannot pipe, not readable'));
+};
 
-  return parseInt(v, base)
+function writeAfterEnd(stream, cb) {
+  var er = new Error('write after end');
+  // TODO: defer error events consistently everywhere, not just the cb
+  stream.emit('error', er);
+  processNextTick(cb, er);
 }
 
-function encodeLength (len, offset) {
-  if (len < 56) {
-    return new Buffer([len + offset])
-  } else {
-    var hexLength = intToHex(len)
-    var lLength = hexLength.length / 2
-    var firstByte = intToHex(offset + 55 + lLength)
-    return new Buffer(firstByte + hexLength, 'hex')
-  }
-}
+// Checks that a user-supplied chunk is valid, especially for the particular
+// mode the stream is in. Currently this means that `null` is never accepted
+// and undefined/non-string values are only allowed in object mode.
+function validChunk(stream, state, chunk, cb) {
+  var valid = true;
+  var er = false;
 
-/**
- * RLP Decoding based on: {@link https://github.com/ethereum/wiki/wiki/%5BEnglish%5D-RLP|RLP}
- * @param {Buffer,String,Integer,Array} data - will be converted to buffer
- * @returns {Array} - returns decode Array of Buffers containg the original message
- **/
-exports.decode = function (input, stream) {
-  if (!input || input.length === 0) {
-    return new Buffer([])
+  if (chunk === null) {
+    er = new TypeError('May not write null values to stream');
+  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
   }
-
-  input = toBuffer(input)
-  var decoded = _decode(input)
-
-  if (stream) {
-    return decoded
+  if (er) {
+    stream.emit('error', er);
+    processNextTick(cb, er);
+    valid = false;
   }
-
-  assert.equal(decoded.remainder.length, 0, 'invalid remainder')
-  return decoded.data
+  return valid;
 }
 
-exports.getLength = function (input) {
-  if (!input || input.length === 0) {
-    return new Buffer([])
+Writable.prototype.write = function (chunk, encoding, cb) {
+  var state = this._writableState;
+  var ret = false;
+  var isBuf = _isUint8Array(chunk) && !state.objectMode;
+
+  if (isBuf && !Buffer.isBuffer(chunk)) {
+    chunk = _uint8ArrayToBuffer(chunk);
   }
 
-  input = toBuffer(input)
-  var firstByte = input[0]
-  if (firstByte <= 0x7f) {
-    return input.length
-  } else if (firstByte <= 0xb7) {
-    return firstByte - 0x7f
-  } else if (firstByte <= 0xbf) {
-    return firstByte - 0xb6
-  } else if (firstByte <= 0xf7) {
-    // a list between  0-55 bytes long
-    return firstByte - 0xbf
-  } else {
-    // a list  over 55 bytes long
-    var llength = firstByte - 0xf6
-    var length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
-    return llength + length
+  if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
   }
-}
 
-function _decode (input) {
-  var length, llength, data, innerRemainder, d
-  var decoded = []
-  var firstByte = input[0]
+  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
 
-  if (firstByte <= 0x7f) {
-    // a single byte whose value is in the [0x00, 0x7f] range, that byte is its own RLP encoding.
-    return {
-      data: input.slice(0, 1),
-      remainder: input.slice(1)
-    }
-  } else if (firstByte <= 0xb7) {
-    // string is 0-55 bytes long. A single byte with value 0x80 plus the length of the string followed by the string
-    // The range of the first byte is [0x80, 0xb7]
-    length = firstByte - 0x7f
+  if (typeof cb !== 'function') cb = nop;
 
-    // set 0x80 null to 0
-    if (firstByte === 0x80) {
-      data = new Buffer([])
-    } else {
-      data = input.slice(1, length)
-    }
+  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
+    state.pendingcb++;
+    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
+  }
 
-    if (length === 2 && data[0] < 0x80) {
-      throw new Error('invalid rlp encoding: byte must be less 0x80')
-    }
+  return ret;
+};
 
-    return {
-      data: data,
-      remainder: input.slice(length)
-    }
-  } else if (firstByte <= 0xbf) {
-    llength = firstByte - 0xb6
-    length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
-    data = input.slice(llength, length + llength)
-    if (data.length < length) {
-      throw (new Error('invalid RLP'))
-    }
+Writable.prototype.cork = function () {
+  var state = this._writableState;
 
-    return {
-      data: data,
-      remainder: input.slice(length + llength)
-    }
-  } else if (firstByte <= 0xf7) {
-    // a list between  0-55 bytes long
-    length = firstByte - 0xbf
-    innerRemainder = input.slice(1, length)
-    while (innerRemainder.length) {
-      d = _decode(innerRemainder)
-      decoded.push(d.data)
-      innerRemainder = d.remainder
-    }
+  state.corked++;
+};
 
-    return {
-      data: decoded,
-      remainder: input.slice(length)
-    }
-  } else {
-    // a list  over 55 bytes long
-    llength = firstByte - 0xf6
-    length = safeParseInt(input.slice(1, llength).toString('hex'), 16)
-    var totalLength = llength + length
-    if (totalLength > input.length) {
-      throw new Error('invalid rlp: total length is larger than the data')
-    }
+Writable.prototype.uncork = function () {
+  var state = this._writableState;
 
-    innerRemainder = input.slice(llength, totalLength)
-    if (innerRemainder.length === 0) {
-      throw new Error('invalid rlp, List has a invalid length')
-    }
+  if (state.corked) {
+    state.corked--;
 
-    while (innerRemainder.length) {
-      d = _decode(innerRemainder)
-      decoded.push(d.data)
-      innerRemainder = d.remainder
-    }
-    return {
-      data: decoded,
-      remainder: input.slice(totalLength)
-    }
+    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
   }
-}
+};
 
-function isHexPrefixed (str) {
-  return str.slice(0, 2) === '0x'
-}
+Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
+  // node::ParseEncoding() requires lower case.
+  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
+  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
+  this._writableState.defaultEncoding = encoding;
+  return this;
+};
 
-// Removes 0x from a given String
-function stripHexPrefix (str) {
-  if (typeof str !== 'string') {
-    return str
+function decodeChunk(state, chunk, encoding) {
+  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
+    chunk = Buffer.from(chunk, encoding);
   }
-  return isHexPrefixed(str) ? str.slice(2) : str
+  return chunk;
 }
 
-function intToHex (i) {
-  var hex = i.toString(16)
-  if (hex.length % 2) {
-    hex = '0' + hex
+// if we're already writing something, then just put this
+// in the queue, and wait our turn.  Otherwise, call _write
+// If we return false, then we need a drain event, so set that flag.
+function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
+  if (!isBuf) {
+    var newChunk = decodeChunk(state, chunk, encoding);
+    if (chunk !== newChunk) {
+      isBuf = true;
+      encoding = 'buffer';
+      chunk = newChunk;
+    }
   }
+  var len = state.objectMode ? 1 : chunk.length;
 
-  return hex
-}
-
-function padToEven (a) {
-  if (a.length % 2) a = '0' + a
-  return a
-}
+  state.length += len;
 
-function intToBuffer (i) {
-  var hex = intToHex(i)
-  return new Buffer(hex, 'hex')
-}
+  var ret = state.length < state.highWaterMark;
+  // we must ensure that previous needDrain will not be reset to false.
+  if (!ret) state.needDrain = true;
 
-function toBuffer (v) {
-  if (!Buffer.isBuffer(v)) {
-    if (typeof v === 'string') {
-      if (isHexPrefixed(v)) {
-        v = new Buffer(padToEven(stripHexPrefix(v)), 'hex')
-      } else {
-        v = new Buffer(v)
-      }
-    } else if (typeof v === 'number') {
-      if (!v) {
-        v = new Buffer([])
-      } else {
-        v = intToBuffer(v)
-      }
-    } else if (v === null || v === undefined) {
-      v = new Buffer([])
-    } else if (v.toArray) {
-      // converts a BN to a Buffer
-      v = new Buffer(v.toArray())
+  if (state.writing || state.corked) {
+    var last = state.lastBufferedRequest;
+    state.lastBufferedRequest = {
+      chunk: chunk,
+      encoding: encoding,
+      isBuf: isBuf,
+      callback: cb,
+      next: null
+    };
+    if (last) {
+      last.next = state.lastBufferedRequest;
     } else {
-      throw new Error('invalid type')
+      state.bufferedRequest = state.lastBufferedRequest;
     }
+    state.bufferedRequestCount += 1;
+  } else {
+    doWrite(stream, state, false, len, chunk, encoding, cb);
   }
-  return v
-}
-
-}).call(this,require("buffer").Buffer)
-},{"assert":1,"buffer":5}],73:[function(require,module,exports){
-'use strict'
-module.exports = require('./lib')(require('./lib/elliptic'))
-
-},{"./lib":77,"./lib/elliptic":76}],74:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var toString = Object.prototype.toString
 
-// TypeError
-exports.isArray = function (value, message) {
-  if (!Array.isArray(value)) throw TypeError(message)
+  return ret;
 }
 
-exports.isBoolean = function (value, message) {
-  if (toString.call(value) !== '[object Boolean]') throw TypeError(message)
+function doWrite(stream, state, writev, len, chunk, encoding, cb) {
+  state.writelen = len;
+  state.writecb = cb;
+  state.writing = true;
+  state.sync = true;
+  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
+  state.sync = false;
 }
 
-exports.isBuffer = function (value, message) {
-  if (!Buffer.isBuffer(value)) throw TypeError(message)
-}
+function onwriteError(stream, state, sync, er, cb) {
+  --state.pendingcb;
 
-exports.isFunction = function (value, message) {
-  if (toString.call(value) !== '[object Function]') throw TypeError(message)
+  if (sync) {
+    // defer the callback if we are being called synchronously
+    // to avoid piling up things on the stack
+    processNextTick(cb, er);
+    // this can emit finish, and it will always happen
+    // after error
+    processNextTick(finishMaybe, stream, state);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er);
+  } else {
+    // the caller expect this to happen before if
+    // it is async
+    cb(er);
+    stream._writableState.errorEmitted = true;
+    stream.emit('error', er);
+    // this can emit finish, but finish must
+    // always follow error
+    finishMaybe(stream, state);
+  }
 }
 
-exports.isNumber = function (value, message) {
-  if (toString.call(value) !== '[object Number]') throw TypeError(message)
+function onwriteStateUpdate(state) {
+  state.writing = false;
+  state.writecb = null;
+  state.length -= state.writelen;
+  state.writelen = 0;
 }
 
-exports.isObject = function (value, message) {
-  if (toString.call(value) !== '[object Object]') throw TypeError(message)
-}
+function onwrite(stream, er) {
+  var state = stream._writableState;
+  var sync = state.sync;
+  var cb = state.writecb;
 
-// RangeError
-exports.isBufferLength = function (buffer, length, message) {
-  if (buffer.length !== length) throw RangeError(message)
-}
+  onwriteStateUpdate(state);
 
-exports.isBufferLength2 = function (buffer, length1, length2, message) {
-  if (buffer.length !== length1 && buffer.length !== length2) throw RangeError(message)
+  if (er) onwriteError(stream, state, sync, er, cb);else {
+    // Check if we're actually ready to finish, but don't emit yet
+    var finished = needFinish(state);
+
+    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
+      clearBuffer(stream, state);
+    }
+
+    if (sync) {
+      /*<replacement>*/
+      asyncWrite(afterWrite, stream, state, finished, cb);
+      /*</replacement>*/
+    } else {
+      afterWrite(stream, state, finished, cb);
+    }
+  }
 }
 
-exports.isLengthGTZero = function (value, message) {
-  if (value.length === 0) throw RangeError(message)
+function afterWrite(stream, state, finished, cb) {
+  if (!finished) onwriteDrain(stream, state);
+  state.pendingcb--;
+  cb();
+  finishMaybe(stream, state);
 }
 
-exports.isNumberInInterval = function (number, x, y, message) {
-  if (number <= x || number >= y) throw RangeError(message)
+// Must force callback to be called on nextTick, so that we don't
+// emit 'drain' before the write() consumer gets the 'false' return
+// value, and has a chance to attach a 'drain' listener.
+function onwriteDrain(stream, state) {
+  if (state.length === 0 && state.needDrain) {
+    state.needDrain = false;
+    stream.emit('drain');
+  }
 }
 
-}).call(this,{"isBuffer":require("../../../../../.nvm/versions/node/v7.5.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
-},{"../../../../../.nvm/versions/node/v7.5.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10}],75:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var bip66 = require('bip66')
+// if there's something in the buffer waiting, then process it
+function clearBuffer(stream, state) {
+  state.bufferProcessing = true;
+  var entry = state.bufferedRequest;
 
-var EC_PRIVKEY_EXPORT_DER_COMPRESSED = new Buffer([
-  // begin
-  0x30, 0x81, 0xd3, 0x02, 0x01, 0x01, 0x04, 0x20,
-  // private key
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  // middle
-  0xa0, 0x81, 0x85, 0x30, 0x81, 0x82, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
-  0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
-  0x21, 0x02, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
-  0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
-  0x17, 0x98, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
-  0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x24, 0x03, 0x22, 0x00,
-  // public key
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00
-])
+  if (stream._writev && entry && entry.next) {
+    // Fast case, write everything using _writev()
+    var l = state.bufferedRequestCount;
+    var buffer = new Array(l);
+    var holder = state.corkedRequestsFree;
+    holder.entry = entry;
 
-var EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED = new Buffer([
-  // begin
-  0x30, 0x82, 0x01, 0x13, 0x02, 0x01, 0x01, 0x04, 0x20,
-  // private key
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  // middle
-  0xa0, 0x81, 0xa5, 0x30, 0x81, 0xa2, 0x02, 0x01, 0x01, 0x30, 0x2c, 0x06, 0x07, 0x2a, 0x86, 0x48,
-  0xcE, 0x3d, 0x01, 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xfE, 0xff, 0xff, 0xfc, 0x2f, 0x30, 0x06, 0x04, 0x01, 0x00, 0x04, 0x01, 0x07, 0x04,
-  0x41, 0x04, 0x79, 0xbE, 0x66, 0x7E, 0xf9, 0xdc, 0xbb, 0xac, 0x55, 0xa0, 0x62, 0x95, 0xcE, 0x87,
-  0x0b, 0x07, 0x02, 0x9b, 0xfc, 0xdb, 0x2d, 0xcE, 0x28, 0xd9, 0x59, 0xf2, 0x81, 0x5b, 0x16, 0xf8,
-  0x17, 0x98, 0x48, 0x3a, 0xda, 0x77, 0x26, 0xa3, 0xc4, 0x65, 0x5d, 0xa4, 0xfb, 0xfc, 0x0E, 0x11,
-  0x08, 0xa8, 0xfd, 0x17, 0xb4, 0x48, 0xa6, 0x85, 0x54, 0x19, 0x9c, 0x47, 0xd0, 0x8f, 0xfb, 0x10,
-  0xd4, 0xb8, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-  0xff, 0xff, 0xff, 0xff, 0xfE, 0xba, 0xaE, 0xdc, 0xE6, 0xaf, 0x48, 0xa0, 0x3b, 0xbf, 0xd2, 0x5E,
-  0x8c, 0xd0, 0x36, 0x41, 0x41, 0x02, 0x01, 0x01, 0xa1, 0x44, 0x03, 0x42, 0x00,
-  // public key
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00
-])
+    var count = 0;
+    var allBuffers = true;
+    while (entry) {
+      buffer[count] = entry;
+      if (!entry.isBuf) allBuffers = false;
+      entry = entry.next;
+      count += 1;
+    }
+    buffer.allBuffers = allBuffers;
 
-var ZERO_BUFFER_32 = new Buffer([
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-])
+    doWrite(stream, state, true, state.length, buffer, '', holder.finish);
 
-exports.privateKeyExport = function (privateKey, publicKey, compressed) {
-  var result = new Buffer(compressed ? EC_PRIVKEY_EXPORT_DER_COMPRESSED : EC_PRIVKEY_EXPORT_DER_UNCOMPRESSED)
-  privateKey.copy(result, compressed ? 8 : 9)
-  publicKey.copy(result, compressed ? 181 : 214)
-  return result
-}
+    // doWrite is almost always async, defer these to save a bit of time
+    // as the hot path ends with doWrite
+    state.pendingcb++;
+    state.lastBufferedRequest = null;
+    if (holder.next) {
+      state.corkedRequestsFree = holder.next;
+      holder.next = null;
+    } else {
+      state.corkedRequestsFree = new CorkedRequest(state);
+    }
+  } else {
+    // Slow case, write chunks one-by-one
+    while (entry) {
+      var chunk = entry.chunk;
+      var encoding = entry.encoding;
+      var cb = entry.callback;
+      var len = state.objectMode ? 1 : chunk.length;
 
-exports.privateKeyImport = function (privateKey) {
-  var length = privateKey.length
+      doWrite(stream, state, false, len, chunk, encoding, cb);
+      entry = entry.next;
+      // if we didn't call the onwrite immediately, then
+      // it means that we need to wait until it does.
+      // also, that means that the chunk and cb are currently
+      // being processed, so move the buffer counter past them.
+      if (state.writing) {
+        break;
+      }
+    }
 
-  // sequence header
-  var index = 0
-  if (length < index + 1 || privateKey[index] !== 0x30) return
-  index += 1
+    if (entry === null) state.lastBufferedRequest = null;
+  }
 
-  // sequence length constructor
-  if (length < index + 1 || !(privateKey[index] & 0x80)) return
+  state.bufferedRequestCount = 0;
+  state.bufferedRequest = entry;
+  state.bufferProcessing = false;
+}
 
-  var lenb = privateKey[index] & 0x7f
-  index += 1
-  if (lenb < 1 || lenb > 2) return
-  if (length < index + lenb) return
+Writable.prototype._write = function (chunk, encoding, cb) {
+  cb(new Error('_write() is not implemented'));
+};
 
-  // sequence length
-  var len = privateKey[index + lenb - 1] | (lenb > 1 ? privateKey[index + lenb - 2] << 8 : 0)
-  index += lenb
-  if (length < index + len) return
+Writable.prototype._writev = null;
 
-  // sequence element 0: version number (=1)
-  if (length < index + 3 ||
-      privateKey[index] !== 0x02 ||
-      privateKey[index + 1] !== 0x01 ||
-      privateKey[index + 2] !== 0x01) {
-    return
-  }
-  index += 3
+Writable.prototype.end = function (chunk, encoding, cb) {
+  var state = this._writableState;
 
-  // sequence element 1: octet string, up to 32 bytes
-  if (length < index + 2 ||
-      privateKey[index] !== 0x04 ||
-      privateKey[index + 1] > 0x20 ||
-      length < index + 2 + privateKey[index + 1]) {
-    return
+  if (typeof chunk === 'function') {
+    cb = chunk;
+    chunk = null;
+    encoding = null;
+  } else if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
   }
 
-  return privateKey.slice(index + 2, index + 2 + privateKey[index + 1])
-}
+  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
 
-exports.signatureExport = function (sigObj) {
-  var r = Buffer.concat([new Buffer([0]), sigObj.r])
-  for (var lenR = 33, posR = 0; lenR > 1 && r[posR] === 0x00 && !(r[posR + 1] & 0x80); --lenR, ++posR);
+  // .end() fully uncorks
+  if (state.corked) {
+    state.corked = 1;
+    this.uncork();
+  }
 
-  var s = Buffer.concat([new Buffer([0]), sigObj.s])
-  for (var lenS = 33, posS = 0; lenS > 1 && s[posS] === 0x00 && !(s[posS + 1] & 0x80); --lenS, ++posS);
+  // ignore unnecessary end() calls.
+  if (!state.ending && !state.finished) endWritable(this, state, cb);
+};
 
-  return bip66.encode(r.slice(posR), s.slice(posS))
+function needFinish(state) {
+  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
 }
-
-exports.signatureImport = function (sig) {
-  var r = new Buffer(ZERO_BUFFER_32)
-  var s = new Buffer(ZERO_BUFFER_32)
-
-  try {
-    var sigObj = bip66.decode(sig)
-    if (sigObj.r.length === 33 && sigObj.r[0] === 0x00) sigObj.r = sigObj.r.slice(1)
-    if (sigObj.r.length > 32) throw new Error('R length is too long')
-    if (sigObj.s.length === 33 && sigObj.s[0] === 0x00) sigObj.s = sigObj.s.slice(1)
-    if (sigObj.s.length > 32) throw new Error('S length is too long')
-  } catch (err) {
-    return
+function callFinal(stream, state) {
+  stream._final(function (err) {
+    state.pendingcb--;
+    if (err) {
+      stream.emit('error', err);
+    }
+    state.prefinished = true;
+    stream.emit('prefinish');
+    finishMaybe(stream, state);
+  });
+}
+function prefinish(stream, state) {
+  if (!state.prefinished && !state.finalCalled) {
+    if (typeof stream._final === 'function') {
+      state.pendingcb++;
+      state.finalCalled = true;
+      processNextTick(callFinal, stream, state);
+    } else {
+      state.prefinished = true;
+      stream.emit('prefinish');
+    }
   }
+}
 
-  sigObj.r.copy(r, 32 - sigObj.r.length)
-  sigObj.s.copy(s, 32 - sigObj.s.length)
-
-  return { r: r, s: s }
+function finishMaybe(stream, state) {
+  var need = needFinish(state);
+  if (need) {
+    prefinish(stream, state);
+    if (state.pendingcb === 0) {
+      state.finished = true;
+      stream.emit('finish');
+    }
+  }
+  return need;
 }
 
-exports.signatureImportLax = function (sig) {
-  var r = new Buffer(ZERO_BUFFER_32)
-  var s = new Buffer(ZERO_BUFFER_32)
+function endWritable(stream, state, cb) {
+  state.ending = true;
+  finishMaybe(stream, state);
+  if (cb) {
+    if (state.finished) processNextTick(cb);else stream.once('finish', cb);
+  }
+  state.ended = true;
+  stream.writable = false;
+}
 
-  var length = sig.length
-  var index = 0
+function onCorkedFinish(corkReq, state, err) {
+  var entry = corkReq.entry;
+  corkReq.entry = null;
+  while (entry) {
+    var cb = entry.callback;
+    state.pendingcb--;
+    cb(err);
+    entry = entry.next;
+  }
+  if (state.corkedRequestsFree) {
+    state.corkedRequestsFree.next = corkReq;
+  } else {
+    state.corkedRequestsFree = corkReq;
+  }
+}
 
-  // sequence tag byte
-  if (sig[index++] !== 0x30) return
+Object.defineProperty(Writable.prototype, 'destroyed', {
+  get: function () {
+    if (this._writableState === undefined) {
+      return false;
+    }
+    return this._writableState.destroyed;
+  },
+  set: function (value) {
+    // we ignore the value if the stream
+    // has not been initialized yet
+    if (!this._writableState) {
+      return;
+    }
 
-  // sequence length byte
-  var lenbyte = sig[index++]
-  if (lenbyte & 0x80) {
-    index += lenbyte - 0x80
-    if (index > length) return
+    // backward compatibility, the user is explicitly
+    // managing destroyed
+    this._writableState.destroyed = value;
   }
+});
 
-  // sequence tag byte for r
-  if (sig[index++] !== 0x02) return
+Writable.prototype.destroy = destroyImpl.destroy;
+Writable.prototype._undestroy = destroyImpl.undestroy;
+Writable.prototype._destroy = function (err, cb) {
+  this.end();
+  cb(err);
+};
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./_stream_duplex":27,"./internal/streams/destroy":33,"./internal/streams/stream":34,"_process":25,"core-util-is":14,"inherits":21,"process-nextick-args":24,"safe-buffer":40,"util-deprecate":51}],32:[function(require,module,exports){
+'use strict';
 
-  // length for r
-  var rlen = sig[index++]
-  if (rlen & 0x80) {
-    lenbyte = rlen - 0x80
-    if (index + lenbyte > length) return
-    for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
-    for (rlen = 0; lenbyte > 0; index += 1, lenbyte -= 1) rlen = (rlen << 8) + sig[index]
-  }
-  if (rlen > length - index) return
-  var rindex = index
-  index += rlen
+/*<replacement>*/
 
-  // sequence tag byte for s
-  if (sig[index++] !== 0x02) return
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-  // length for s
-  var slen = sig[index++]
-  if (slen & 0x80) {
-    lenbyte = slen - 0x80
-    if (index + lenbyte > length) return
-    for (; lenbyte > 0 && sig[index] === 0x00; index += 1, lenbyte -= 1);
-    for (slen = 0; lenbyte > 0; index += 1, lenbyte -= 1) slen = (slen << 8) + sig[index]
-  }
-  if (slen > length - index) return
-  var sindex = index
-  index += slen
+var Buffer = require('safe-buffer').Buffer;
+/*</replacement>*/
 
-  // ignore leading zeros in r
-  for (; rlen > 0 && sig[rindex] === 0x00; rlen -= 1, rindex += 1);
-  // copy r value
-  if (rlen > 32) return
-  var rvalue = sig.slice(rindex, rindex + rlen)
-  rvalue.copy(r, 32 - rvalue.length)
+function copyBuffer(src, target, offset) {
+  src.copy(target, offset);
+}
 
-  // ignore leading zeros in s
-  for (; slen > 0 && sig[sindex] === 0x00; slen -= 1, sindex += 1);
-  // copy s value
-  if (slen > 32) return
-  var svalue = sig.slice(sindex, sindex + slen)
-  svalue.copy(s, 32 - svalue.length)
+module.exports = function () {
+  function BufferList() {
+    _classCallCheck(this, BufferList);
+
+    this.head = null;
+    this.tail = null;
+    this.length = 0;
+  }
 
-  return { r: r, s: s }
-}
+  BufferList.prototype.push = function push(v) {
+    var entry = { data: v, next: null };
+    if (this.length > 0) this.tail.next = entry;else this.head = entry;
+    this.tail = entry;
+    ++this.length;
+  };
 
-}).call(this,require("buffer").Buffer)
-},{"bip66":32,"buffer":5}],76:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var createHash = require('create-hash')
-var BN = require('bn.js')
-var EC = require('elliptic').ec
+  BufferList.prototype.unshift = function unshift(v) {
+    var entry = { data: v, next: this.head };
+    if (this.length === 0) this.tail = entry;
+    this.head = entry;
+    ++this.length;
+  };
 
-var messages = require('../messages.json')
+  BufferList.prototype.shift = function shift() {
+    if (this.length === 0) return;
+    var ret = this.head.data;
+    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
+    --this.length;
+    return ret;
+  };
 
-var ec = new EC('secp256k1')
-var ecparams = ec.curve
+  BufferList.prototype.clear = function clear() {
+    this.head = this.tail = null;
+    this.length = 0;
+  };
 
-function loadCompressedPublicKey (first, xBuffer) {
-  var x = new BN(xBuffer)
+  BufferList.prototype.join = function join(s) {
+    if (this.length === 0) return '';
+    var p = this.head;
+    var ret = '' + p.data;
+    while (p = p.next) {
+      ret += s + p.data;
+    }return ret;
+  };
 
-  // overflow
-  if (x.cmp(ecparams.p) >= 0) return null
-  x = x.toRed(ecparams.red)
+  BufferList.prototype.concat = function concat(n) {
+    if (this.length === 0) return Buffer.alloc(0);
+    if (this.length === 1) return this.head.data;
+    var ret = Buffer.allocUnsafe(n >>> 0);
+    var p = this.head;
+    var i = 0;
+    while (p) {
+      copyBuffer(p.data, ret, i);
+      i += p.data.length;
+      p = p.next;
+    }
+    return ret;
+  };
 
-  // compute corresponding Y
-  var y = x.redSqr().redIMul(x).redIAdd(ecparams.b).redSqrt()
-  if ((first === 0x03) !== y.isOdd()) y = y.redNeg()
+  return BufferList;
+}();
+},{"safe-buffer":40}],33:[function(require,module,exports){
+'use strict';
 
-  return ec.keyPair({ pub: { x: x, y: y } })
-}
+/*<replacement>*/
 
-function loadUncompressedPublicKey (first, xBuffer, yBuffer) {
-  var x = new BN(xBuffer)
-  var y = new BN(yBuffer)
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
-  // overflow
-  if (x.cmp(ecparams.p) >= 0 || y.cmp(ecparams.p) >= 0) return null
+// undocumented cb() API, needed for core, not for public API
+function destroy(err, cb) {
+  var _this = this;
 
-  x = x.toRed(ecparams.red)
-  y = y.toRed(ecparams.red)
+  var readableDestroyed = this._readableState && this._readableState.destroyed;
+  var writableDestroyed = this._writableState && this._writableState.destroyed;
 
-  // is odd flag
-  if ((first === 0x06 || first === 0x07) && y.isOdd() !== (first === 0x07)) return null
+  if (readableDestroyed || writableDestroyed) {
+    if (cb) {
+      cb(err);
+    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
+      processNextTick(emitErrorNT, this, err);
+    }
+    return;
+  }
 
-  // x*x*x + b = y*y
-  var x3 = x.redSqr().redIMul(x)
-  if (!y.redSqr().redISub(x3.redIAdd(ecparams.b)).isZero()) return null
+  // we set destroyed to true before firing error callbacks in order
+  // to make it re-entrance safe in case destroy() is called within callbacks
 
-  return ec.keyPair({ pub: { x: x, y: y } })
+  if (this._readableState) {
+    this._readableState.destroyed = true;
+  }
+
+  // if this is a duplex stream mark the writable part as destroyed as well
+  if (this._writableState) {
+    this._writableState.destroyed = true;
+  }
+
+  this._destroy(err || null, function (err) {
+    if (!cb && err) {
+      processNextTick(emitErrorNT, _this, err);
+      if (_this._writableState) {
+        _this._writableState.errorEmitted = true;
+      }
+    } else if (cb) {
+      cb(err);
+    }
+  });
 }
 
-function loadPublicKey (publicKey) {
-  var first = publicKey[0]
-  switch (first) {
-    case 0x02:
-    case 0x03:
-      if (publicKey.length !== 33) return null
-      return loadCompressedPublicKey(first, publicKey.slice(1, 33))
-    case 0x04:
-    case 0x06:
-    case 0x07:
-      if (publicKey.length !== 65) return null
-      return loadUncompressedPublicKey(first, publicKey.slice(1, 33), publicKey.slice(33, 65))
-    default:
-      return null
+function undestroy() {
+  if (this._readableState) {
+    this._readableState.destroyed = false;
+    this._readableState.reading = false;
+    this._readableState.ended = false;
+    this._readableState.endEmitted = false;
+  }
+
+  if (this._writableState) {
+    this._writableState.destroyed = false;
+    this._writableState.ended = false;
+    this._writableState.ending = false;
+    this._writableState.finished = false;
+    this._writableState.errorEmitted = false;
   }
 }
 
-exports.privateKeyVerify = function (privateKey) {
-  var bn = new BN(privateKey)
-  return bn.cmp(ecparams.n) < 0 && !bn.isZero()
+function emitErrorNT(self, err) {
+  self.emit('error', err);
 }
 
-exports.privateKeyExport = function (privateKey, compressed) {
-  var d = new BN(privateKey)
-  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.EC_PRIVATE_KEY_EXPORT_DER_FAIL)
+module.exports = {
+  destroy: destroy,
+  undestroy: undestroy
+};
+},{"process-nextick-args":24}],34:[function(require,module,exports){
+module.exports = require('events').EventEmitter;
 
-  return new Buffer(ec.keyFromPrivate(privateKey).getPublic(compressed, true))
-}
+},{"events":18}],35:[function(require,module,exports){
+module.exports = require('./readable').PassThrough
 
-exports.privateKeyTweakAdd = function (privateKey, tweak) {
-  var bn = new BN(tweak)
-  if (bn.cmp(ecparams.n) >= 0) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
+},{"./readable":36}],36:[function(require,module,exports){
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = exports;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
 
-  bn.iadd(new BN(privateKey))
-  if (bn.cmp(ecparams.n) >= 0) bn.isub(ecparams.n)
-  if (bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_ADD_FAIL)
+},{"./lib/_stream_duplex.js":27,"./lib/_stream_passthrough.js":28,"./lib/_stream_readable.js":29,"./lib/_stream_transform.js":30,"./lib/_stream_writable.js":31}],37:[function(require,module,exports){
+module.exports = require('./readable').Transform
 
-  return bn.toArrayLike(Buffer, 'be', 32)
-}
+},{"./readable":36}],38:[function(require,module,exports){
+module.exports = require('./lib/_stream_writable.js');
 
-exports.privateKeyTweakMul = function (privateKey, tweak) {
-  var bn = new BN(tweak)
-  if (bn.cmp(ecparams.n) >= 0 || bn.isZero()) throw new Error(messages.EC_PRIVATE_KEY_TWEAK_MUL_FAIL)
+},{"./lib/_stream_writable.js":31}],39:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var inherits = require('inherits')
+var HashBase = require('hash-base')
 
-  bn.imul(new BN(privateKey))
-  if (bn.cmp(ecparams.n)) bn = bn.umod(ecparams.n)
+function RIPEMD160 () {
+  HashBase.call(this, 64)
 
-  return bn.toArrayLike(Buffer, 'be', 32)
+  // state
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
 }
 
-exports.publicKeyCreate = function (privateKey, compressed) {
-  var d = new BN(privateKey)
-  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.EC_PUBLIC_KEY_CREATE_FAIL)
+inherits(RIPEMD160, HashBase)
 
-  return new Buffer(ec.keyFromPrivate(privateKey).getPublic(compressed, true))
-}
+RIPEMD160.prototype._update = function () {
+  var m = new Array(16)
+  for (var i = 0; i < 16; ++i) m[i] = this._block.readInt32LE(i * 4)
 
-exports.publicKeyConvert = function (publicKey, compressed) {
-  var pair = loadPublicKey(publicKey)
-  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+  var al = this._a
+  var bl = this._b
+  var cl = this._c
+  var dl = this._d
+  var el = this._e
 
-  return new Buffer(pair.getPublic(compressed, true))
-}
+  // Mj = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
+  // K = 0x00000000
+  // Sj = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8
+  al = fn1(al, bl, cl, dl, el, m[0], 0x00000000, 11); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[1], 0x00000000, 14); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[2], 0x00000000, 15); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[3], 0x00000000, 12); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[4], 0x00000000, 5); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[5], 0x00000000, 8); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[6], 0x00000000, 7); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[7], 0x00000000, 9); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[8], 0x00000000, 11); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[9], 0x00000000, 13); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[10], 0x00000000, 14); cl = rotl(cl, 10)
+  el = fn1(el, al, bl, cl, dl, m[11], 0x00000000, 15); bl = rotl(bl, 10)
+  dl = fn1(dl, el, al, bl, cl, m[12], 0x00000000, 6); al = rotl(al, 10)
+  cl = fn1(cl, dl, el, al, bl, m[13], 0x00000000, 7); el = rotl(el, 10)
+  bl = fn1(bl, cl, dl, el, al, m[14], 0x00000000, 9); dl = rotl(dl, 10)
+  al = fn1(al, bl, cl, dl, el, m[15], 0x00000000, 8); cl = rotl(cl, 10)
 
-exports.publicKeyVerify = function (publicKey) {
-  return loadPublicKey(publicKey) !== null
-}
+  // Mj = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8
+  // K = 0x5a827999
+  // Sj = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12
+  el = fn2(el, al, bl, cl, dl, m[7], 0x5a827999, 7); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[4], 0x5a827999, 6); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[13], 0x5a827999, 8); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[1], 0x5a827999, 13); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[10], 0x5a827999, 11); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[6], 0x5a827999, 9); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[15], 0x5a827999, 7); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[3], 0x5a827999, 15); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[12], 0x5a827999, 7); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[0], 0x5a827999, 12); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[9], 0x5a827999, 15); bl = rotl(bl, 10)
+  dl = fn2(dl, el, al, bl, cl, m[5], 0x5a827999, 9); al = rotl(al, 10)
+  cl = fn2(cl, dl, el, al, bl, m[2], 0x5a827999, 11); el = rotl(el, 10)
+  bl = fn2(bl, cl, dl, el, al, m[14], 0x5a827999, 7); dl = rotl(dl, 10)
+  al = fn2(al, bl, cl, dl, el, m[11], 0x5a827999, 13); cl = rotl(cl, 10)
+  el = fn2(el, al, bl, cl, dl, m[8], 0x5a827999, 12); bl = rotl(bl, 10)
 
-exports.publicKeyTweakAdd = function (publicKey, tweak, compressed) {
-  var pair = loadPublicKey(publicKey)
-  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+  // Mj = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12
+  // K = 0x6ed9eba1
+  // Sj = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5
+  dl = fn3(dl, el, al, bl, cl, m[3], 0x6ed9eba1, 11); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[10], 0x6ed9eba1, 13); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[14], 0x6ed9eba1, 6); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[4], 0x6ed9eba1, 7); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[9], 0x6ed9eba1, 14); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[15], 0x6ed9eba1, 9); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[8], 0x6ed9eba1, 13); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[1], 0x6ed9eba1, 15); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[2], 0x6ed9eba1, 14); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[7], 0x6ed9eba1, 8); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[0], 0x6ed9eba1, 13); al = rotl(al, 10)
+  cl = fn3(cl, dl, el, al, bl, m[6], 0x6ed9eba1, 6); el = rotl(el, 10)
+  bl = fn3(bl, cl, dl, el, al, m[13], 0x6ed9eba1, 5); dl = rotl(dl, 10)
+  al = fn3(al, bl, cl, dl, el, m[11], 0x6ed9eba1, 12); cl = rotl(cl, 10)
+  el = fn3(el, al, bl, cl, dl, m[5], 0x6ed9eba1, 7); bl = rotl(bl, 10)
+  dl = fn3(dl, el, al, bl, cl, m[12], 0x6ed9eba1, 5); al = rotl(al, 10)
 
-  tweak = new BN(tweak)
-  if (tweak.cmp(ecparams.n) >= 0) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_ADD_FAIL)
+  // Mj = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2
+  // K = 0x8f1bbcdc
+  // Sj = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12
+  cl = fn4(cl, dl, el, al, bl, m[1], 0x8f1bbcdc, 11); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[9], 0x8f1bbcdc, 12); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[11], 0x8f1bbcdc, 14); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[10], 0x8f1bbcdc, 15); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[0], 0x8f1bbcdc, 14); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[8], 0x8f1bbcdc, 15); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[12], 0x8f1bbcdc, 9); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[4], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[13], 0x8f1bbcdc, 9); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[3], 0x8f1bbcdc, 14); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[7], 0x8f1bbcdc, 5); el = rotl(el, 10)
+  bl = fn4(bl, cl, dl, el, al, m[15], 0x8f1bbcdc, 6); dl = rotl(dl, 10)
+  al = fn4(al, bl, cl, dl, el, m[14], 0x8f1bbcdc, 8); cl = rotl(cl, 10)
+  el = fn4(el, al, bl, cl, dl, m[5], 0x8f1bbcdc, 6); bl = rotl(bl, 10)
+  dl = fn4(dl, el, al, bl, cl, m[6], 0x8f1bbcdc, 5); al = rotl(al, 10)
+  cl = fn4(cl, dl, el, al, bl, m[2], 0x8f1bbcdc, 12); el = rotl(el, 10)
 
-  return new Buffer(ecparams.g.mul(tweak).add(pair.pub).encode(true, compressed))
-}
+  // Mj = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+  // K = 0xa953fd4e
+  // Sj = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+  bl = fn5(bl, cl, dl, el, al, m[4], 0xa953fd4e, 9); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[0], 0xa953fd4e, 15); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[5], 0xa953fd4e, 5); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[9], 0xa953fd4e, 11); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[7], 0xa953fd4e, 6); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[12], 0xa953fd4e, 8); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[2], 0xa953fd4e, 13); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[10], 0xa953fd4e, 12); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[14], 0xa953fd4e, 5); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[1], 0xa953fd4e, 12); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[3], 0xa953fd4e, 13); dl = rotl(dl, 10)
+  al = fn5(al, bl, cl, dl, el, m[8], 0xa953fd4e, 14); cl = rotl(cl, 10)
+  el = fn5(el, al, bl, cl, dl, m[11], 0xa953fd4e, 11); bl = rotl(bl, 10)
+  dl = fn5(dl, el, al, bl, cl, m[6], 0xa953fd4e, 8); al = rotl(al, 10)
+  cl = fn5(cl, dl, el, al, bl, m[15], 0xa953fd4e, 5); el = rotl(el, 10)
+  bl = fn5(bl, cl, dl, el, al, m[13], 0xa953fd4e, 6); dl = rotl(dl, 10)
 
-exports.publicKeyTweakMul = function (publicKey, tweak, compressed) {
-  var pair = loadPublicKey(publicKey)
-  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
+  var ar = this._a
+  var br = this._b
+  var cr = this._c
+  var dr = this._d
+  var er = this._e
 
-  tweak = new BN(tweak)
-  if (tweak.cmp(ecparams.n) >= 0 || tweak.isZero()) throw new Error(messages.EC_PUBLIC_KEY_TWEAK_MUL_FAIL)
+  // M'j = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12
+  // K' = 0x50a28be6
+  // S'j = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6
+  ar = fn5(ar, br, cr, dr, er, m[5], 0x50a28be6, 8); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[14], 0x50a28be6, 9); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[7], 0x50a28be6, 9); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[0], 0x50a28be6, 11); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[9], 0x50a28be6, 13); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[2], 0x50a28be6, 15); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[11], 0x50a28be6, 15); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[4], 0x50a28be6, 5); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[13], 0x50a28be6, 7); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[6], 0x50a28be6, 7); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[15], 0x50a28be6, 8); cr = rotl(cr, 10)
+  er = fn5(er, ar, br, cr, dr, m[8], 0x50a28be6, 11); br = rotl(br, 10)
+  dr = fn5(dr, er, ar, br, cr, m[1], 0x50a28be6, 14); ar = rotl(ar, 10)
+  cr = fn5(cr, dr, er, ar, br, m[10], 0x50a28be6, 14); er = rotl(er, 10)
+  br = fn5(br, cr, dr, er, ar, m[3], 0x50a28be6, 12); dr = rotl(dr, 10)
+  ar = fn5(ar, br, cr, dr, er, m[12], 0x50a28be6, 6); cr = rotl(cr, 10)
 
-  return new Buffer(pair.pub.mul(tweak).encode(true, compressed))
-}
+  // M'j = 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2
+  // K' = 0x5c4dd124
+  // S'j = 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11
+  er = fn4(er, ar, br, cr, dr, m[6], 0x5c4dd124, 9); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[11], 0x5c4dd124, 13); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[3], 0x5c4dd124, 15); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[7], 0x5c4dd124, 7); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[0], 0x5c4dd124, 12); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[13], 0x5c4dd124, 8); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[5], 0x5c4dd124, 9); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[10], 0x5c4dd124, 11); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[14], 0x5c4dd124, 7); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[15], 0x5c4dd124, 7); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[8], 0x5c4dd124, 12); br = rotl(br, 10)
+  dr = fn4(dr, er, ar, br, cr, m[12], 0x5c4dd124, 7); ar = rotl(ar, 10)
+  cr = fn4(cr, dr, er, ar, br, m[4], 0x5c4dd124, 6); er = rotl(er, 10)
+  br = fn4(br, cr, dr, er, ar, m[9], 0x5c4dd124, 15); dr = rotl(dr, 10)
+  ar = fn4(ar, br, cr, dr, er, m[1], 0x5c4dd124, 13); cr = rotl(cr, 10)
+  er = fn4(er, ar, br, cr, dr, m[2], 0x5c4dd124, 11); br = rotl(br, 10)
 
-exports.publicKeyCombine = function (publicKeys, compressed) {
-  var pairs = new Array(publicKeys.length)
-  for (var i = 0; i < publicKeys.length; ++i) {
-    pairs[i] = loadPublicKey(publicKeys[i])
-    if (pairs[i] === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
-  }
+  // M'j = 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13
+  // K' = 0x6d703ef3
+  // S'j = 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5
+  dr = fn3(dr, er, ar, br, cr, m[15], 0x6d703ef3, 9); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[5], 0x6d703ef3, 7); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[1], 0x6d703ef3, 15); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[3], 0x6d703ef3, 11); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[7], 0x6d703ef3, 8); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[14], 0x6d703ef3, 6); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[6], 0x6d703ef3, 6); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[9], 0x6d703ef3, 14); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[11], 0x6d703ef3, 12); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[8], 0x6d703ef3, 13); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[12], 0x6d703ef3, 5); ar = rotl(ar, 10)
+  cr = fn3(cr, dr, er, ar, br, m[2], 0x6d703ef3, 14); er = rotl(er, 10)
+  br = fn3(br, cr, dr, er, ar, m[10], 0x6d703ef3, 13); dr = rotl(dr, 10)
+  ar = fn3(ar, br, cr, dr, er, m[0], 0x6d703ef3, 13); cr = rotl(cr, 10)
+  er = fn3(er, ar, br, cr, dr, m[4], 0x6d703ef3, 7); br = rotl(br, 10)
+  dr = fn3(dr, er, ar, br, cr, m[13], 0x6d703ef3, 5); ar = rotl(ar, 10)
 
-  var point = pairs[0].pub
-  for (var j = 1; j < pairs.length; ++j) point = point.add(pairs[j].pub)
-  if (point.isInfinity()) throw new Error(messages.EC_PUBLIC_KEY_COMBINE_FAIL)
+  // M'j = 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14
+  // K' = 0x7a6d76e9
+  // S'j = 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8
+  cr = fn2(cr, dr, er, ar, br, m[8], 0x7a6d76e9, 15); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[6], 0x7a6d76e9, 5); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[4], 0x7a6d76e9, 8); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[1], 0x7a6d76e9, 11); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[3], 0x7a6d76e9, 14); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[11], 0x7a6d76e9, 14); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[15], 0x7a6d76e9, 6); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[0], 0x7a6d76e9, 14); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[5], 0x7a6d76e9, 6); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[12], 0x7a6d76e9, 9); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[2], 0x7a6d76e9, 12); er = rotl(er, 10)
+  br = fn2(br, cr, dr, er, ar, m[13], 0x7a6d76e9, 9); dr = rotl(dr, 10)
+  ar = fn2(ar, br, cr, dr, er, m[9], 0x7a6d76e9, 12); cr = rotl(cr, 10)
+  er = fn2(er, ar, br, cr, dr, m[7], 0x7a6d76e9, 5); br = rotl(br, 10)
+  dr = fn2(dr, er, ar, br, cr, m[10], 0x7a6d76e9, 15); ar = rotl(ar, 10)
+  cr = fn2(cr, dr, er, ar, br, m[14], 0x7a6d76e9, 8); er = rotl(er, 10)
 
-  return new Buffer(point.encode(true, compressed))
+  // M'j = 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+  // K' = 0x00000000
+  // S'j = 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+  br = fn1(br, cr, dr, er, ar, m[12], 0x00000000, 8); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[15], 0x00000000, 5); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[10], 0x00000000, 12); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[4], 0x00000000, 9); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[1], 0x00000000, 12); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[5], 0x00000000, 5); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[8], 0x00000000, 14); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[7], 0x00000000, 6); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[6], 0x00000000, 8); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[2], 0x00000000, 13); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[13], 0x00000000, 6); dr = rotl(dr, 10)
+  ar = fn1(ar, br, cr, dr, er, m[14], 0x00000000, 5); cr = rotl(cr, 10)
+  er = fn1(er, ar, br, cr, dr, m[0], 0x00000000, 15); br = rotl(br, 10)
+  dr = fn1(dr, er, ar, br, cr, m[3], 0x00000000, 13); ar = rotl(ar, 10)
+  cr = fn1(cr, dr, er, ar, br, m[9], 0x00000000, 11); er = rotl(er, 10)
+  br = fn1(br, cr, dr, er, ar, m[11], 0x00000000, 11); dr = rotl(dr, 10)
+
+  // change state
+  var t = (this._b + cl + dr) | 0
+  this._b = (this._c + dl + er) | 0
+  this._c = (this._d + el + ar) | 0
+  this._d = (this._e + al + br) | 0
+  this._e = (this._a + bl + cr) | 0
+  this._a = t
 }
 
-exports.signatureNormalize = function (signature) {
-  var r = new BN(signature.slice(0, 32))
-  var s = new BN(signature.slice(32, 64))
-  if (r.cmp(ecparams.n) >= 0 || s.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+RIPEMD160.prototype._digest = function () {
+  // create padding and handle blocks
+  this._block[this._blockOffset++] = 0x80
+  if (this._blockOffset > 56) {
+    this._block.fill(0, this._blockOffset, 64)
+    this._update()
+    this._blockOffset = 0
+  }
 
-  var result = new Buffer(signature)
-  if (s.cmp(ec.nh) === 1) ecparams.n.sub(s).toArrayLike(Buffer, 'be', 32).copy(result, 32)
+  this._block.fill(0, this._blockOffset, 56)
+  this._block.writeUInt32LE(this._length[0], 56)
+  this._block.writeUInt32LE(this._length[1], 60)
+  this._update()
 
-  return result
+  // produce result
+  var buffer = new Buffer(20)
+  buffer.writeInt32LE(this._a, 0)
+  buffer.writeInt32LE(this._b, 4)
+  buffer.writeInt32LE(this._c, 8)
+  buffer.writeInt32LE(this._d, 12)
+  buffer.writeInt32LE(this._e, 16)
+  return buffer
 }
 
-exports.signatureExport = function (signature) {
-  var r = signature.slice(0, 32)
-  var s = signature.slice(32, 64)
-  if (new BN(r).cmp(ecparams.n) >= 0 || new BN(s).cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+function rotl (x, n) {
+  return (x << n) | (x >>> (32 - n))
+}
 
-  return { r: r, s: s }
+function fn1 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
 }
 
-exports.signatureImport = function (sigObj) {
-  var r = new BN(sigObj.r)
-  if (r.cmp(ecparams.n) >= 0) r = new BN(0)
+function fn2 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
+}
 
-  var s = new BN(sigObj.s)
-  if (s.cmp(ecparams.n) >= 0) s = new BN(0)
+function fn3 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
+}
 
-  return Buffer.concat([
-    r.toArrayLike(Buffer, 'be', 32),
-    s.toArrayLike(Buffer, 'be', 32)
-  ])
+function fn4 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
 }
 
-exports.sign = function (message, privateKey, noncefn, data) {
-  if (typeof noncefn === 'function') {
-    var getNonce = noncefn
-    noncefn = function (counter) {
-      var nonce = getNonce(message, privateKey, null, data, counter)
-      if (!Buffer.isBuffer(nonce) || nonce.length !== 32) throw new Error(messages.ECDSA_SIGN_FAIL)
+function fn5 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
+}
 
-      return new BN(nonce)
-    }
-  }
+module.exports = RIPEMD160
 
-  var d = new BN(privateKey)
-  if (d.cmp(ecparams.n) >= 0 || d.isZero()) throw new Error(messages.ECDSA_SIGN_FAIL)
+}).call(this,require("buffer").Buffer)
+},{"buffer":8,"hash-base":19,"inherits":21}],40:[function(require,module,exports){
+/* eslint-disable node/no-deprecated-api */
+var buffer = require('buffer')
+var Buffer = buffer.Buffer
 
-  var result = ec.sign(message, privateKey, { canonical: true, k: noncefn, pers: data })
-  return {
-    signature: Buffer.concat([
-      result.r.toArrayLike(Buffer, 'be', 32),
-      result.s.toArrayLike(Buffer, 'be', 32)
-    ]),
-    recovery: result.recoveryParam
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
   }
 }
-
-exports.verify = function (message, signature, publicKey) {
-  var sigObj = {r: signature.slice(0, 32), s: signature.slice(32, 64)}
-
-  var sigr = new BN(sigObj.r)
-  var sigs = new BN(sigObj.s)
-  if (sigr.cmp(ecparams.n) >= 0 || sigs.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
-  if (sigs.cmp(ec.nh) === 1 || sigr.isZero() || sigs.isZero()) return false
-
-  var pair = loadPublicKey(publicKey)
-  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
-
-  return ec.verify(message, sigObj, {x: pair.pub.x, y: pair.pub.y})
+if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
+  module.exports = buffer
+} else {
+  // Copy properties from require('buffer')
+  copyProps(buffer, exports)
+  exports.Buffer = SafeBuffer
 }
 
-exports.recover = function (message, signature, recovery, compressed) {
-  var sigObj = {r: signature.slice(0, 32), s: signature.slice(32, 64)}
+function SafeBuffer (arg, encodingOrOffset, length) {
+  return Buffer(arg, encodingOrOffset, length)
+}
 
-  var sigr = new BN(sigObj.r)
-  var sigs = new BN(sigObj.s)
-  if (sigr.cmp(ecparams.n) >= 0 || sigs.cmp(ecparams.n) >= 0) throw new Error(messages.ECDSA_SIGNATURE_PARSE_FAIL)
+// Copy static methods from Buffer
+copyProps(Buffer, SafeBuffer)
 
-  try {
-    if (sigr.isZero() || sigs.isZero()) throw new Error()
+SafeBuffer.from = function (arg, encodingOrOffset, length) {
+  if (typeof arg === 'number') {
+    throw new TypeError('Argument must not be a number')
+  }
+  return Buffer(arg, encodingOrOffset, length)
+}
 
-    var point = ec.recoverPubKey(message, sigObj, recovery)
-    return new Buffer(point.encode(true, compressed))
-  } catch (err) {
-    throw new Error(messages.ECDSA_RECOVER_FAIL)
+SafeBuffer.alloc = function (size, fill, encoding) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  var buf = Buffer(size)
+  if (fill !== undefined) {
+    if (typeof encoding === 'string') {
+      buf.fill(fill, encoding)
+    } else {
+      buf.fill(fill)
+    }
+  } else {
+    buf.fill(0)
   }
+  return buf
 }
 
-exports.ecdh = function (publicKey, privateKey) {
-  var shared = exports.ecdhUnsafe(publicKey, privateKey, true)
-  return createHash('sha256').update(shared).digest()
+SafeBuffer.allocUnsafe = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return Buffer(size)
 }
 
-exports.ecdhUnsafe = function (publicKey, privateKey, compressed) {
-  var pair = loadPublicKey(publicKey)
-  if (pair === null) throw new Error(messages.EC_PUBLIC_KEY_PARSE_FAIL)
-
-  var scalar = new BN(privateKey)
-  if (scalar.cmp(ecparams.n) >= 0 || scalar.isZero()) throw new Error(messages.ECDH_FAIL)
-
-  return new Buffer(pair.pub.mul(scalar).encode(true, compressed))
+SafeBuffer.allocUnsafeSlow = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return buffer.SlowBuffer(size)
 }
 
-}).call(this,require("buffer").Buffer)
-},{"../messages.json":78,"bn.js":33,"buffer":5,"create-hash":36,"elliptic":39}],77:[function(require,module,exports){
-'use strict'
-var assert = require('./assert')
-var der = require('./der')
-var messages = require('./messages.json')
-
-function initCompressedValue (value, defaultValue) {
-  if (value === undefined) return defaultValue
+},{"buffer":8}],41:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
 
-  assert.isBoolean(value, messages.COMPRESSED_TYPE_INVALID)
-  return value
+// prototype class for hash functions
+function Hash (blockSize, finalSize) {
+  this._block = Buffer.alloc(blockSize)
+  this._finalSize = finalSize
+  this._blockSize = blockSize
+  this._len = 0
 }
 
-module.exports = function (secp256k1) {
-  return {
-    privateKeyVerify: function (privateKey) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      return privateKey.length === 32 && secp256k1.privateKeyVerify(privateKey)
-    },
+Hash.prototype.update = function (data, enc) {
+  if (typeof data === 'string') {
+    enc = enc || 'utf8'
+    data = Buffer.from(data, enc)
+  }
 
-    privateKeyExport: function (privateKey, compressed) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+  var block = this._block
+  var blockSize = this._blockSize
+  var length = data.length
+  var accum = this._len
 
-      compressed = initCompressedValue(compressed, true)
-      var publicKey = secp256k1.privateKeyExport(privateKey, compressed)
+  for (var offset = 0; offset < length;) {
+    var assigned = accum % blockSize
+    var remainder = Math.min(length - offset, blockSize - assigned)
 
-      return der.privateKeyExport(privateKey, publicKey, compressed)
-    },
+    for (var i = 0; i < remainder; i++) {
+      block[assigned + i] = data[offset + i]
+    }
 
-    privateKeyImport: function (privateKey) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
+    accum += remainder
+    offset += remainder
 
-      privateKey = der.privateKeyImport(privateKey)
-      if (privateKey && privateKey.length === 32 && secp256k1.privateKeyVerify(privateKey)) return privateKey
+    if ((accum % blockSize) === 0) {
+      this._update(block)
+    }
+  }
 
-      throw new Error(messages.EC_PRIVATE_KEY_IMPORT_DER_FAIL)
-    },
+  this._len += length
+  return this
+}
 
-    privateKeyTweakAdd: function (privateKey, tweak) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+Hash.prototype.digest = function (enc) {
+  var rem = this._len % this._blockSize
 
-      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
-      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+  this._block[rem] = 0x80
 
-      return secp256k1.privateKeyTweakAdd(privateKey, tweak)
-    },
+  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
+  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
+  this._block.fill(0, rem + 1)
 
-    privateKeyTweakMul: function (privateKey, tweak) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+  if (rem >= this._finalSize) {
+    this._update(this._block)
+    this._block.fill(0)
+  }
 
-      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
-      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+  var bits = this._len * 8
 
-      return secp256k1.privateKeyTweakMul(privateKey, tweak)
-    },
+  // uint32
+  if (bits <= 0xffffffff) {
+    this._block.writeUInt32BE(bits, this._blockSize - 4)
 
-    publicKeyCreate: function (privateKey, compressed) {
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+  // uint64
+  } else {
+    var lowBits = bits & 0xffffffff
+    var highBits = (bits - lowBits) / 0x100000000
 
-      compressed = initCompressedValue(compressed, true)
+    this._block.writeUInt32BE(highBits, this._blockSize - 8)
+    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
+  }
 
-      return secp256k1.publicKeyCreate(privateKey, compressed)
-    },
+  this._update(this._block)
+  var hash = this._hash()
 
-    publicKeyConvert: function (publicKey, compressed) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+  return enc ? hash.toString(enc) : hash
+}
 
-      compressed = initCompressedValue(compressed, true)
+Hash.prototype._update = function () {
+  throw new Error('_update must be implemented by subclass')
+}
 
-      return secp256k1.publicKeyConvert(publicKey, compressed)
-    },
+module.exports = Hash
 
-    publicKeyVerify: function (publicKey) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      return secp256k1.publicKeyVerify(publicKey)
-    },
+},{"safe-buffer":40}],42:[function(require,module,exports){
+var exports = module.exports = function SHA (algorithm) {
+  algorithm = algorithm.toLowerCase()
 
-    publicKeyTweakAdd: function (publicKey, tweak, compressed) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+  var Algorithm = exports[algorithm]
+  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
 
-      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
-      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+  return new Algorithm()
+}
 
-      compressed = initCompressedValue(compressed, true)
+exports.sha = require('./sha')
+exports.sha1 = require('./sha1')
+exports.sha224 = require('./sha224')
+exports.sha256 = require('./sha256')
+exports.sha384 = require('./sha384')
+exports.sha512 = require('./sha512')
 
-      return secp256k1.publicKeyTweakAdd(publicKey, tweak, compressed)
-    },
+},{"./sha":43,"./sha1":44,"./sha224":45,"./sha256":46,"./sha384":47,"./sha512":48}],43:[function(require,module,exports){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
+ * in FIPS PUB 180-1
+ * This source code is derived from sha1.js of the same repository.
+ * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
+ * operation was added.
+ */
 
-    publicKeyTweakMul: function (publicKey, tweak, compressed) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-      assert.isBuffer(tweak, messages.TWEAK_TYPE_INVALID)
-      assert.isBufferLength(tweak, 32, messages.TWEAK_LENGTH_INVALID)
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
 
-      compressed = initCompressedValue(compressed, true)
+var W = new Array(80)
 
-      return secp256k1.publicKeyTweakMul(publicKey, tweak, compressed)
-    },
+function Sha () {
+  this.init()
+  this._w = W
 
-    publicKeyCombine: function (publicKeys, compressed) {
-      assert.isArray(publicKeys, messages.EC_PUBLIC_KEYS_TYPE_INVALID)
-      assert.isLengthGTZero(publicKeys, messages.EC_PUBLIC_KEYS_LENGTH_INVALID)
-      for (var i = 0; i < publicKeys.length; ++i) {
-        assert.isBuffer(publicKeys[i], messages.EC_PUBLIC_KEY_TYPE_INVALID)
-        assert.isBufferLength2(publicKeys[i], 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
-      }
+  Hash.call(this, 64, 56)
+}
 
-      compressed = initCompressedValue(compressed, true)
+inherits(Sha, Hash)
 
-      return secp256k1.publicKeyCombine(publicKeys, compressed)
-    },
+Sha.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
 
-    signatureNormalize: function (signature) {
-      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+  return this
+}
 
-      return secp256k1.signatureNormalize(signature)
-    },
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
 
-    signatureExport: function (signature) {
-      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
 
-      var sigObj = secp256k1.signatureExport(signature)
-      return der.signatureExport(sigObj)
-    },
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
 
-    signatureImport: function (sig) {
-      assert.isBuffer(sig, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isLengthGTZero(sig, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+Sha.prototype._update = function (M) {
+  var W = this._w
 
-      var sigObj = der.signatureImport(sig)
-      if (sigObj) return secp256k1.signatureImport(sigObj)
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
 
-      throw new Error(messages.ECDSA_SIGNATURE_PARSE_DER_FAIL)
-    },
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
 
-    signatureImportLax: function (sig) {
-      assert.isBuffer(sig, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isLengthGTZero(sig, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
 
-      var sigObj = der.signatureImportLax(sig)
-      if (sigObj) return secp256k1.signatureImport(sigObj)
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
+  }
 
-      throw new Error(messages.ECDSA_SIGNATURE_PARSE_DER_FAIL)
-    },
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
+}
 
-    sign: function (message, privateKey, options) {
-      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
-      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+Sha.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(20)
 
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
 
-      var data = null
-      var noncefn = null
-      if (options !== undefined) {
-        assert.isObject(options, messages.OPTIONS_TYPE_INVALID)
+  return H
+}
 
-        if (options.data !== undefined) {
-          assert.isBuffer(options.data, messages.OPTIONS_DATA_TYPE_INVALID)
-          assert.isBufferLength(options.data, 32, messages.OPTIONS_DATA_LENGTH_INVALID)
-          data = options.data
-        }
+module.exports = Sha
 
-        if (options.noncefn !== undefined) {
-          assert.isFunction(options.noncefn, messages.OPTIONS_NONCEFN_TYPE_INVALID)
-          noncefn = options.noncefn
-        }
-      }
+},{"./hash":41,"inherits":21,"safe-buffer":40}],44:[function(require,module,exports){
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
+ * in FIPS PUB 180-1
+ * Version 2.1a Copyright Paul Johnston 2000 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for details.
+ */
 
-      return secp256k1.sign(message, privateKey, noncefn, data)
-    },
+var inherits = require('inherits')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-    verify: function (message, signature, publicKey) {
-      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
-      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+var K = [
+  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+]
 
-      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+var W = new Array(80)
 
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+function Sha1 () {
+  this.init()
+  this._w = W
 
-      return secp256k1.verify(message, signature, publicKey)
-    },
+  Hash.call(this, 64, 56)
+}
 
-    recover: function (message, signature, recovery, compressed) {
-      assert.isBuffer(message, messages.MSG32_TYPE_INVALID)
-      assert.isBufferLength(message, 32, messages.MSG32_LENGTH_INVALID)
+inherits(Sha1, Hash)
 
-      assert.isBuffer(signature, messages.ECDSA_SIGNATURE_TYPE_INVALID)
-      assert.isBufferLength(signature, 64, messages.ECDSA_SIGNATURE_LENGTH_INVALID)
+Sha1.prototype.init = function () {
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
 
-      assert.isNumber(recovery, messages.RECOVERY_ID_TYPE_INVALID)
-      assert.isNumberInInterval(recovery, -1, 4, messages.RECOVERY_ID_VALUE_INVALID)
+  return this
+}
 
-      compressed = initCompressedValue(compressed, true)
+function rotl1 (num) {
+  return (num << 1) | (num >>> 31)
+}
 
-      return secp256k1.recover(message, signature, recovery, compressed)
-    },
+function rotl5 (num) {
+  return (num << 5) | (num >>> 27)
+}
 
-    ecdh: function (publicKey, privateKey) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+function rotl30 (num) {
+  return (num << 30) | (num >>> 2)
+}
 
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+function ft (s, b, c, d) {
+  if (s === 0) return (b & c) | ((~b) & d)
+  if (s === 2) return (b & c) | (b & d) | (c & d)
+  return b ^ c ^ d
+}
 
-      return secp256k1.ecdh(publicKey, privateKey)
-    },
+Sha1.prototype._update = function (M) {
+  var W = this._w
 
-    ecdhUnsafe: function (publicKey, privateKey, compressed) {
-      assert.isBuffer(publicKey, messages.EC_PUBLIC_KEY_TYPE_INVALID)
-      assert.isBufferLength2(publicKey, 33, 65, messages.EC_PUBLIC_KEY_LENGTH_INVALID)
+  var a = this._a | 0
+  var b = this._b | 0
+  var c = this._c | 0
+  var d = this._d | 0
+  var e = this._e | 0
 
-      assert.isBuffer(privateKey, messages.EC_PRIVATE_KEY_TYPE_INVALID)
-      assert.isBufferLength(privateKey, 32, messages.EC_PRIVATE_KEY_LENGTH_INVALID)
+  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
+  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
 
-      compressed = initCompressedValue(compressed, true)
+  for (var j = 0; j < 80; ++j) {
+    var s = ~~(j / 20)
+    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
 
-      return secp256k1.ecdhUnsafe(publicKey, privateKey, compressed)
-    }
+    e = d
+    d = c
+    c = rotl30(b)
+    b = a
+    a = t
   }
-}
-
-},{"./assert":74,"./der":75,"./messages.json":78}],78:[function(require,module,exports){
-module.exports={
-  "COMPRESSED_TYPE_INVALID": "compressed should be a boolean",
-  "EC_PRIVATE_KEY_TYPE_INVALID": "private key should be a Buffer",
-  "EC_PRIVATE_KEY_LENGTH_INVALID": "private key length is invalid",
-  "EC_PRIVATE_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting private key is invalid",
-  "EC_PRIVATE_KEY_TWEAK_MUL_FAIL": "tweak out of range",
-  "EC_PRIVATE_KEY_EXPORT_DER_FAIL": "couldn't export to DER format",
-  "EC_PRIVATE_KEY_IMPORT_DER_FAIL": "couldn't import from DER format",
-  "EC_PUBLIC_KEYS_TYPE_INVALID": "public keys should be an Array",
-  "EC_PUBLIC_KEYS_LENGTH_INVALID": "public keys Array should have at least 1 element",
-  "EC_PUBLIC_KEY_TYPE_INVALID": "public key should be a Buffer",
-  "EC_PUBLIC_KEY_LENGTH_INVALID": "public key length is invalid",
-  "EC_PUBLIC_KEY_PARSE_FAIL": "the public key could not be parsed or is invalid",
-  "EC_PUBLIC_KEY_CREATE_FAIL": "private was invalid, try again",
-  "EC_PUBLIC_KEY_TWEAK_ADD_FAIL": "tweak out of range or resulting public key is invalid",
-  "EC_PUBLIC_KEY_TWEAK_MUL_FAIL": "tweak out of range",
-  "EC_PUBLIC_KEY_COMBINE_FAIL": "the sum of the public keys is not valid",
-  "ECDH_FAIL": "scalar was invalid (zero or overflow)",
-  "ECDSA_SIGNATURE_TYPE_INVALID": "signature should be a Buffer",
-  "ECDSA_SIGNATURE_LENGTH_INVALID": "signature length is invalid",
-  "ECDSA_SIGNATURE_PARSE_FAIL": "couldn't parse signature",
-  "ECDSA_SIGNATURE_PARSE_DER_FAIL": "couldn't parse DER signature",
-  "ECDSA_SIGNATURE_SERIALIZE_DER_FAIL": "couldn't serialize signature to DER format",
-  "ECDSA_SIGN_FAIL": "nonce generation function failed or private key is invalid",
-  "ECDSA_RECOVER_FAIL": "couldn't recover public key from signature",
-  "MSG32_TYPE_INVALID": "message should be a Buffer",
-  "MSG32_LENGTH_INVALID": "message length is invalid",
-  "OPTIONS_TYPE_INVALID": "options should be an Object",
-  "OPTIONS_DATA_TYPE_INVALID": "options.data should be a Buffer",
-  "OPTIONS_DATA_LENGTH_INVALID": "options.data length is invalid",
-  "OPTIONS_NONCEFN_TYPE_INVALID": "options.noncefn should be a Function",
-  "RECOVERY_ID_TYPE_INVALID": "recovery should be a Number",
-  "RECOVERY_ID_VALUE_INVALID": "recovery should have value between -1 and 4",
-  "TWEAK_TYPE_INVALID": "tweak should be a Buffer",
-  "TWEAK_LENGTH_INVALID": "tweak length is invalid"
-}
 
-},{}],79:[function(require,module,exports){
-(function (Buffer){
-// prototype class for hash functions
-function Hash (blockSize, finalSize) {
-  this._block = new Buffer(blockSize)
-  this._finalSize = finalSize
-  this._blockSize = blockSize
-  this._len = 0
-  this._s = 0
+  this._a = (a + this._a) | 0
+  this._b = (b + this._b) | 0
+  this._c = (c + this._c) | 0
+  this._d = (d + this._d) | 0
+  this._e = (e + this._e) | 0
 }
 
-Hash.prototype.update = function (data, enc) {
-  if (typeof data === 'string') {
-    enc = enc || 'utf8'
-    data = new Buffer(data, enc)
-  }
-
-  var l = this._len += data.length
-  var s = this._s || 0
-  var f = 0
-  var buffer = this._block
-
-  while (s < l) {
-    var t = Math.min(data.length, f + this._blockSize - (s % this._blockSize))
-    var ch = (t - f)
-
-    for (var i = 0; i < ch; i++) {
-      buffer[(s % this._blockSize) + i] = data[i + f]
-    }
-
-    s += ch
-    f += ch
+Sha1.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(20)
 
-    if ((s % this._blockSize) === 0) {
-      this._update(buffer)
-    }
-  }
-  this._s = s
+  H.writeInt32BE(this._a | 0, 0)
+  H.writeInt32BE(this._b | 0, 4)
+  H.writeInt32BE(this._c | 0, 8)
+  H.writeInt32BE(this._d | 0, 12)
+  H.writeInt32BE(this._e | 0, 16)
 
-  return this
+  return H
 }
 
-Hash.prototype.digest = function (enc) {
-  // Suppose the length of the message M, in bits, is l
-  var l = this._len * 8
+module.exports = Sha1
 
-  // Append the bit 1 to the end of the message
-  this._block[this._len % this._blockSize] = 0x80
+},{"./hash":41,"inherits":21,"safe-buffer":40}],45:[function(require,module,exports){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
+ */
 
-  // and then k zero bits, where k is the smallest non-negative solution to the equation (l + 1 + k) === finalSize mod blockSize
-  this._block.fill(0, this._len % this._blockSize + 1)
+var inherits = require('inherits')
+var Sha256 = require('./sha256')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
-  if (l % (this._blockSize * 8) >= this._finalSize * 8) {
-    this._update(this._block)
-    this._block.fill(0)
-  }
+var W = new Array(64)
 
-  // to this append the block which is equal to the number l written in binary
-  // TODO: handle case where l is > Math.pow(2, 29)
-  this._block.writeInt32BE(l, this._blockSize - 4)
+function Sha224 () {
+  this.init()
 
-  var hash = this._update(this._block) || this._hash()
+  this._w = W // new Array(64)
 
-  return enc ? hash.toString(enc) : hash
+  Hash.call(this, 64, 56)
 }
 
-Hash.prototype._update = function () {
-  throw new Error('_update must be implemented by subclass')
-}
+inherits(Sha224, Sha256)
 
-module.exports = Hash
+Sha224.prototype.init = function () {
+  this._a = 0xc1059ed8
+  this._b = 0x367cd507
+  this._c = 0x3070dd17
+  this._d = 0xf70e5939
+  this._e = 0xffc00b31
+  this._f = 0x68581511
+  this._g = 0x64f98fa7
+  this._h = 0xbefa4fa4
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":5}],80:[function(require,module,exports){
-var exports = module.exports = function SHA (algorithm) {
-  algorithm = algorithm.toLowerCase()
+  return this
+}
 
-  var Algorithm = exports[algorithm]
-  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')
+Sha224.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(28)
 
-  return new Algorithm()
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
+
+  return H
 }
 
-exports.sha = require('./sha')
-exports.sha1 = require('./sha1')
-exports.sha224 = require('./sha224')
-exports.sha256 = require('./sha256')
-exports.sha384 = require('./sha384')
-exports.sha512 = require('./sha512')
+module.exports = Sha224
 
-},{"./sha":81,"./sha1":82,"./sha224":83,"./sha256":84,"./sha384":85,"./sha512":86}],81:[function(require,module,exports){
-(function (Buffer){
-/*
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
- * in FIPS PUB 180-1
- * This source code is derived from sha1.js of the same repository.
- * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
- * operation was added.
+},{"./hash":41,"./sha256":46,"inherits":21,"safe-buffer":40}],46:[function(require,module,exports){
+/**
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
+ * in FIPS 180-2
+ * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ *
  */
 
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
-  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
+  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
+  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
+  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
+  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
+  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
+  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
+  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
+  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
 ]
 
-var W = new Array(80)
+var W = new Array(64)
 
-function Sha () {
+function Sha256 () {
   this.init()
-  this._w = W
+
+  this._w = W // new Array(64)
 
   Hash.call(this, 64, 56)
 }
 
-inherits(Sha, Hash)
+inherits(Sha256, Hash)
 
-Sha.prototype.init = function () {
-  this._a = 0x67452301
-  this._b = 0xefcdab89
-  this._c = 0x98badcfe
-  this._d = 0x10325476
-  this._e = 0xc3d2e1f0
+Sha256.prototype.init = function () {
+  this._a = 0x6a09e667
+  this._b = 0xbb67ae85
+  this._c = 0x3c6ef372
+  this._d = 0xa54ff53a
+  this._e = 0x510e527f
+  this._f = 0x9b05688c
+  this._g = 0x1f83d9ab
+  this._h = 0x5be0cd19
 
   return this
 }
 
-function rotl5 (num) {
-  return (num << 5) | (num >>> 27)
+function ch (x, y, z) {
+  return z ^ (x & (y ^ z))
 }
 
-function rotl30 (num) {
-  return (num << 30) | (num >>> 2)
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
 }
 
-function ft (s, b, c, d) {
-  if (s === 0) return (b & c) | ((~b) & d)
-  if (s === 2) return (b & c) | (b & d) | (c & d)
-  return b ^ c ^ d
+function sigma0 (x) {
+  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
 }
 
-Sha.prototype._update = function (M) {
+function sigma1 (x) {
+  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
+}
+
+function gamma0 (x) {
+  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
+}
+
+function gamma1 (x) {
+  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
+}
+
+Sha256.prototype._update = function (M) {
   var W = this._w
 
   var a = this._a | 0
@@ -97170,19 +98089,25 @@ Sha.prototype._update = function (M) {
   var c = this._c | 0
   var d = this._d | 0
   var e = this._e | 0
+  var f = this._f | 0
+  var g = this._g | 0
+  var h = this._h | 0
 
   for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]
+  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
 
-  for (var j = 0; j < 80; ++j) {
-    var s = ~~(j / 20)
-    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
+  for (var j = 0; j < 64; ++j) {
+    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
+    var T2 = (sigma0(a) + maj(a, b, c)) | 0
 
-    e = d
+    h = g
+    g = f
+    f = e
+    e = (d + T1) | 0
     d = c
-    c = rotl30(b)
+    c = b
     b = a
-    a = t
+    a = (T1 + T2) | 0
   }
 
   this._a = (a + this._a) | 0
@@ -97190,671 +98115,1262 @@ Sha.prototype._update = function (M) {
   this._c = (c + this._c) | 0
   this._d = (d + this._d) | 0
   this._e = (e + this._e) | 0
+  this._f = (f + this._f) | 0
+  this._g = (g + this._g) | 0
+  this._h = (h + this._h) | 0
 }
 
-Sha.prototype._hash = function () {
-  var H = new Buffer(20)
+Sha256.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(32)
 
-  H.writeInt32BE(this._a | 0, 0)
-  H.writeInt32BE(this._b | 0, 4)
-  H.writeInt32BE(this._c | 0, 8)
-  H.writeInt32BE(this._d | 0, 12)
-  H.writeInt32BE(this._e | 0, 16)
+  H.writeInt32BE(this._a, 0)
+  H.writeInt32BE(this._b, 4)
+  H.writeInt32BE(this._c, 8)
+  H.writeInt32BE(this._d, 12)
+  H.writeInt32BE(this._e, 16)
+  H.writeInt32BE(this._f, 20)
+  H.writeInt32BE(this._g, 24)
+  H.writeInt32BE(this._h, 28)
 
   return H
 }
 
-module.exports = Sha
+module.exports = Sha256
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"buffer":5,"inherits":63}],82:[function(require,module,exports){
-(function (Buffer){
-/*
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
- * in FIPS PUB 180-1
- * Version 2.1a Copyright Paul Johnston 2000 - 2002.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- * Distributed under the BSD License
- * See http://pajhome.org.uk/crypt/md5 for details.
- */
+},{"./hash":41,"inherits":21,"safe-buffer":40}],47:[function(require,module,exports){
+var inherits = require('inherits')
+var SHA512 = require('./sha512')
+var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
+
+var W = new Array(160)
+
+function Sha384 () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 128, 112)
+}
+
+inherits(Sha384, SHA512)
+
+Sha384.prototype.init = function () {
+  this._ah = 0xcbbb9d5d
+  this._bh = 0x629a292a
+  this._ch = 0x9159015a
+  this._dh = 0x152fecd8
+  this._eh = 0x67332667
+  this._fh = 0x8eb44a87
+  this._gh = 0xdb0c2e0d
+  this._hh = 0x47b5481d
+
+  this._al = 0xc1059ed8
+  this._bl = 0x367cd507
+  this._cl = 0x3070dd17
+  this._dl = 0xf70e5939
+  this._el = 0xffc00b31
+  this._fl = 0x68581511
+  this._gl = 0x64f98fa7
+  this._hl = 0xbefa4fa4
+
+  return this
+}
+
+Sha384.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(48)
+
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
+
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
+
+  return H
+}
+
+module.exports = Sha384
 
+},{"./hash":41,"./sha512":48,"inherits":21,"safe-buffer":40}],48:[function(require,module,exports){
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
-  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
+  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
+  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
+  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
+  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
+  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
+  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
+  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
+  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
+  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
+  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
+  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
+  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
+  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
+  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
+  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
+  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
+  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
+  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
+  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
+  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
+  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
+  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
+  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
+  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
+  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
+  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
+  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
+  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
+  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
+  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
+  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
+  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
+  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
+  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
+  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
+  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
+  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
+  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
+  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
+  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
 ]
 
-var W = new Array(80)
+var W = new Array(160)
+
+function Sha512 () {
+  this.init()
+  this._w = W
+
+  Hash.call(this, 128, 112)
+}
+
+inherits(Sha512, Hash)
+
+Sha512.prototype.init = function () {
+  this._ah = 0x6a09e667
+  this._bh = 0xbb67ae85
+  this._ch = 0x3c6ef372
+  this._dh = 0xa54ff53a
+  this._eh = 0x510e527f
+  this._fh = 0x9b05688c
+  this._gh = 0x1f83d9ab
+  this._hh = 0x5be0cd19
+
+  this._al = 0xf3bcc908
+  this._bl = 0x84caa73b
+  this._cl = 0xfe94f82b
+  this._dl = 0x5f1d36f1
+  this._el = 0xade682d1
+  this._fl = 0x2b3e6c1f
+  this._gl = 0xfb41bd6b
+  this._hl = 0x137e2179
+
+  return this
+}
+
+function Ch (x, y, z) {
+  return z ^ (x & (y ^ z))
+}
+
+function maj (x, y, z) {
+  return (x & y) | (z & (x | y))
+}
+
+function sigma0 (x, xl) {
+  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
+}
+
+function sigma1 (x, xl) {
+  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
+}
+
+function Gamma0 (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
+}
+
+function Gamma0l (x, xl) {
+  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
+}
+
+function Gamma1 (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
+}
+
+function Gamma1l (x, xl) {
+  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
+}
+
+function getCarry (a, b) {
+  return (a >>> 0) < (b >>> 0) ? 1 : 0
+}
+
+Sha512.prototype._update = function (M) {
+  var W = this._w
+
+  var ah = this._ah | 0
+  var bh = this._bh | 0
+  var ch = this._ch | 0
+  var dh = this._dh | 0
+  var eh = this._eh | 0
+  var fh = this._fh | 0
+  var gh = this._gh | 0
+  var hh = this._hh | 0
+
+  var al = this._al | 0
+  var bl = this._bl | 0
+  var cl = this._cl | 0
+  var dl = this._dl | 0
+  var el = this._el | 0
+  var fl = this._fl | 0
+  var gl = this._gl | 0
+  var hl = this._hl | 0
+
+  for (var i = 0; i < 32; i += 2) {
+    W[i] = M.readInt32BE(i * 4)
+    W[i + 1] = M.readInt32BE(i * 4 + 4)
+  }
+  for (; i < 160; i += 2) {
+    var xh = W[i - 15 * 2]
+    var xl = W[i - 15 * 2 + 1]
+    var gamma0 = Gamma0(xh, xl)
+    var gamma0l = Gamma0l(xl, xh)
+
+    xh = W[i - 2 * 2]
+    xl = W[i - 2 * 2 + 1]
+    var gamma1 = Gamma1(xh, xl)
+    var gamma1l = Gamma1l(xl, xh)
+
+    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
+    var Wi7h = W[i - 7 * 2]
+    var Wi7l = W[i - 7 * 2 + 1]
+
+    var Wi16h = W[i - 16 * 2]
+    var Wi16l = W[i - 16 * 2 + 1]
+
+    var Wil = (gamma0l + Wi7l) | 0
+    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
+    Wil = (Wil + gamma1l) | 0
+    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
+    Wil = (Wil + Wi16l) | 0
+    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
+
+    W[i] = Wih
+    W[i + 1] = Wil
+  }
+
+  for (var j = 0; j < 160; j += 2) {
+    Wih = W[j]
+    Wil = W[j + 1]
+
+    var majh = maj(ah, bh, ch)
+    var majl = maj(al, bl, cl)
+
+    var sigma0h = sigma0(ah, al)
+    var sigma0l = sigma0(al, ah)
+    var sigma1h = sigma1(eh, el)
+    var sigma1l = sigma1(el, eh)
+
+    // t1 = h + sigma1 + ch + K[j] + W[j]
+    var Kih = K[j]
+    var Kil = K[j + 1]
+
+    var chh = Ch(eh, fh, gh)
+    var chl = Ch(el, fl, gl)
+
+    var t1l = (hl + sigma1l) | 0
+    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
+    t1l = (t1l + chl) | 0
+    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
+    t1l = (t1l + Kil) | 0
+    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
+    t1l = (t1l + Wil) | 0
+    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
+
+    // t2 = sigma0 + maj
+    var t2l = (sigma0l + majl) | 0
+    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
+
+    hh = gh
+    hl = gl
+    gh = fh
+    gl = fl
+    fh = eh
+    fl = el
+    el = (dl + t1l) | 0
+    eh = (dh + t1h + getCarry(el, dl)) | 0
+    dh = ch
+    dl = cl
+    ch = bh
+    cl = bl
+    bh = ah
+    bl = al
+    al = (t1l + t2l) | 0
+    ah = (t1h + t2h + getCarry(al, t1l)) | 0
+  }
+
+  this._al = (this._al + al) | 0
+  this._bl = (this._bl + bl) | 0
+  this._cl = (this._cl + cl) | 0
+  this._dl = (this._dl + dl) | 0
+  this._el = (this._el + el) | 0
+  this._fl = (this._fl + fl) | 0
+  this._gl = (this._gl + gl) | 0
+  this._hl = (this._hl + hl) | 0
+
+  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
+  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
+  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
+  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
+  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
+  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
+  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
+  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
+}
+
+Sha512.prototype._hash = function () {
+  var H = Buffer.allocUnsafe(64)
+
+  function writeInt64BE (h, l, offset) {
+    H.writeInt32BE(h, offset)
+    H.writeInt32BE(l, offset + 4)
+  }
+
+  writeInt64BE(this._ah, this._al, 0)
+  writeInt64BE(this._bh, this._bl, 8)
+  writeInt64BE(this._ch, this._cl, 16)
+  writeInt64BE(this._dh, this._dl, 24)
+  writeInt64BE(this._eh, this._el, 32)
+  writeInt64BE(this._fh, this._fl, 40)
+  writeInt64BE(this._gh, this._gl, 48)
+  writeInt64BE(this._hh, this._hl, 56)
+
+  return H
+}
+
+module.exports = Sha512
+
+},{"./hash":41,"inherits":21,"safe-buffer":40}],49:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-function Sha1 () {
-  this.init()
-  this._w = W
+module.exports = Stream;
 
-  Hash.call(this, 64, 56)
-}
+var EE = require('events').EventEmitter;
+var inherits = require('inherits');
 
-inherits(Sha1, Hash)
+inherits(Stream, EE);
+Stream.Readable = require('readable-stream/readable.js');
+Stream.Writable = require('readable-stream/writable.js');
+Stream.Duplex = require('readable-stream/duplex.js');
+Stream.Transform = require('readable-stream/transform.js');
+Stream.PassThrough = require('readable-stream/passthrough.js');
 
-Sha1.prototype.init = function () {
-  this._a = 0x67452301
-  this._b = 0xefcdab89
-  this._c = 0x98badcfe
-  this._d = 0x10325476
-  this._e = 0xc3d2e1f0
+// Backwards-compat with node 0.4.x
+Stream.Stream = Stream;
 
-  return this
-}
 
-function rotl1 (num) {
-  return (num << 1) | (num >>> 31)
-}
 
-function rotl5 (num) {
-  return (num << 5) | (num >>> 27)
-}
+// old-style streams.  Note that the pipe method (the only relevant
+// part of this class) is overridden in the Readable class.
 
-function rotl30 (num) {
-  return (num << 30) | (num >>> 2)
+function Stream() {
+  EE.call(this);
 }
 
-function ft (s, b, c, d) {
-  if (s === 0) return (b & c) | ((~b) & d)
-  if (s === 2) return (b & c) | (b & d) | (c & d)
-  return b ^ c ^ d
-}
+Stream.prototype.pipe = function(dest, options) {
+  var source = this;
 
-Sha1.prototype._update = function (M) {
-  var W = this._w
+  function ondata(chunk) {
+    if (dest.writable) {
+      if (false === dest.write(chunk) && source.pause) {
+        source.pause();
+      }
+    }
+  }
 
-  var a = this._a | 0
-  var b = this._b | 0
-  var c = this._c | 0
-  var d = this._d | 0
-  var e = this._e | 0
+  source.on('data', ondata);
 
-  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])
+  function ondrain() {
+    if (source.readable && source.resume) {
+      source.resume();
+    }
+  }
 
-  for (var j = 0; j < 80; ++j) {
-    var s = ~~(j / 20)
-    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0
+  dest.on('drain', ondrain);
 
-    e = d
-    d = c
-    c = rotl30(b)
-    b = a
-    a = t
+  // If the 'end' option is not supplied, dest.end() will be called when
+  // source gets the 'end' or 'close' events.  Only dest.end() once.
+  if (!dest._isStdio && (!options || options.end !== false)) {
+    source.on('end', onend);
+    source.on('close', onclose);
   }
 
-  this._a = (a + this._a) | 0
-  this._b = (b + this._b) | 0
-  this._c = (c + this._c) | 0
-  this._d = (d + this._d) | 0
-  this._e = (e + this._e) | 0
-}
-
-Sha1.prototype._hash = function () {
-  var H = new Buffer(20)
+  var didOnEnd = false;
+  function onend() {
+    if (didOnEnd) return;
+    didOnEnd = true;
 
-  H.writeInt32BE(this._a | 0, 0)
-  H.writeInt32BE(this._b | 0, 4)
-  H.writeInt32BE(this._c | 0, 8)
-  H.writeInt32BE(this._d | 0, 12)
-  H.writeInt32BE(this._e | 0, 16)
+    dest.end();
+  }
 
-  return H
-}
 
-module.exports = Sha1
+  function onclose() {
+    if (didOnEnd) return;
+    didOnEnd = true;
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"buffer":5,"inherits":63}],83:[function(require,module,exports){
-(function (Buffer){
-/**
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
- * in FIPS 180-2
- * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- *
- */
+    if (typeof dest.destroy === 'function') dest.destroy();
+  }
 
-var inherits = require('inherits')
-var Sha256 = require('./sha256')
-var Hash = require('./hash')
+  // don't leave dangling pipes when there are errors.
+  function onerror(er) {
+    cleanup();
+    if (EE.listenerCount(this, 'error') === 0) {
+      throw er; // Unhandled stream error in pipe.
+    }
+  }
 
-var W = new Array(64)
+  source.on('error', onerror);
+  dest.on('error', onerror);
 
-function Sha224 () {
-  this.init()
+  // remove all the event listeners that were added.
+  function cleanup() {
+    source.removeListener('data', ondata);
+    dest.removeListener('drain', ondrain);
 
-  this._w = W // new Array(64)
+    source.removeListener('end', onend);
+    source.removeListener('close', onclose);
 
-  Hash.call(this, 64, 56)
-}
+    source.removeListener('error', onerror);
+    dest.removeListener('error', onerror);
 
-inherits(Sha224, Sha256)
+    source.removeListener('end', cleanup);
+    source.removeListener('close', cleanup);
 
-Sha224.prototype.init = function () {
-  this._a = 0xc1059ed8
-  this._b = 0x367cd507
-  this._c = 0x3070dd17
-  this._d = 0xf70e5939
-  this._e = 0xffc00b31
-  this._f = 0x68581511
-  this._g = 0x64f98fa7
-  this._h = 0xbefa4fa4
+    dest.removeListener('close', cleanup);
+  }
 
-  return this
-}
+  source.on('end', cleanup);
+  source.on('close', cleanup);
 
-Sha224.prototype._hash = function () {
-  var H = new Buffer(28)
+  dest.on('close', cleanup);
 
-  H.writeInt32BE(this._a, 0)
-  H.writeInt32BE(this._b, 4)
-  H.writeInt32BE(this._c, 8)
-  H.writeInt32BE(this._d, 12)
-  H.writeInt32BE(this._e, 16)
-  H.writeInt32BE(this._f, 20)
-  H.writeInt32BE(this._g, 24)
+  dest.emit('pipe', source);
 
-  return H
-}
+  // Allow for unix-like usage: A.pipe(B).pipe(C)
+  return dest;
+};
 
-module.exports = Sha224
+},{"events":18,"inherits":21,"readable-stream/duplex.js":26,"readable-stream/passthrough.js":35,"readable-stream/readable.js":36,"readable-stream/transform.js":37,"readable-stream/writable.js":38}],50:[function(require,module,exports){
+'use strict';
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"./sha256":84,"buffer":5,"inherits":63}],84:[function(require,module,exports){
-(function (Buffer){
-/**
- * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
- * in FIPS 180-2
- * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- *
- */
+var Buffer = require('safe-buffer').Buffer;
 
-var inherits = require('inherits')
-var Hash = require('./hash')
+var isEncoding = Buffer.isEncoding || function (encoding) {
+  encoding = '' + encoding;
+  switch (encoding && encoding.toLowerCase()) {
+    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
+      return true;
+    default:
+      return false;
+  }
+};
 
-var K = [
-  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
-  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
-  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
-  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
-  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
-  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
-  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
-  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
-  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
-  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
-  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
-  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
-  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
-  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
-  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
-  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
-]
+function _normalizeEncoding(enc) {
+  if (!enc) return 'utf8';
+  var retried;
+  while (true) {
+    switch (enc) {
+      case 'utf8':
+      case 'utf-8':
+        return 'utf8';
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return 'utf16le';
+      case 'latin1':
+      case 'binary':
+        return 'latin1';
+      case 'base64':
+      case 'ascii':
+      case 'hex':
+        return enc;
+      default:
+        if (retried) return; // undefined
+        enc = ('' + enc).toLowerCase();
+        retried = true;
+    }
+  }
+};
 
-var W = new Array(64)
+// Do not cache `Buffer.isEncoding` when checking encoding names as some
+// modules monkey-patch it to support additional encodings
+function normalizeEncoding(enc) {
+  var nenc = _normalizeEncoding(enc);
+  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
+  return nenc || enc;
+}
 
-function Sha256 () {
-  this.init()
+// StringDecoder provides an interface for efficiently splitting a series of
+// buffers into a series of JS strings without breaking apart multi-byte
+// characters.
+exports.StringDecoder = StringDecoder;
+function StringDecoder(encoding) {
+  this.encoding = normalizeEncoding(encoding);
+  var nb;
+  switch (this.encoding) {
+    case 'utf16le':
+      this.text = utf16Text;
+      this.end = utf16End;
+      nb = 4;
+      break;
+    case 'utf8':
+      this.fillLast = utf8FillLast;
+      nb = 4;
+      break;
+    case 'base64':
+      this.text = base64Text;
+      this.end = base64End;
+      nb = 3;
+      break;
+    default:
+      this.write = simpleWrite;
+      this.end = simpleEnd;
+      return;
+  }
+  this.lastNeed = 0;
+  this.lastTotal = 0;
+  this.lastChar = Buffer.allocUnsafe(nb);
+}
 
-  this._w = W // new Array(64)
+StringDecoder.prototype.write = function (buf) {
+  if (buf.length === 0) return '';
+  var r;
+  var i;
+  if (this.lastNeed) {
+    r = this.fillLast(buf);
+    if (r === undefined) return '';
+    i = this.lastNeed;
+    this.lastNeed = 0;
+  } else {
+    i = 0;
+  }
+  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
+  return r || '';
+};
 
-  Hash.call(this, 64, 56)
-}
+StringDecoder.prototype.end = utf8End;
 
-inherits(Sha256, Hash)
+// Returns only complete characters in a Buffer
+StringDecoder.prototype.text = utf8Text;
 
-Sha256.prototype.init = function () {
-  this._a = 0x6a09e667
-  this._b = 0xbb67ae85
-  this._c = 0x3c6ef372
-  this._d = 0xa54ff53a
-  this._e = 0x510e527f
-  this._f = 0x9b05688c
-  this._g = 0x1f83d9ab
-  this._h = 0x5be0cd19
+// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
+StringDecoder.prototype.fillLast = function (buf) {
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
+  this.lastNeed -= buf.length;
+};
 
-  return this
+// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
+// continuation byte.
+function utf8CheckByte(byte) {
+  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
+  return -1;
 }
 
-function ch (x, y, z) {
-  return z ^ (x & (y ^ z))
+// Checks at most 3 bytes at the end of a Buffer in order to detect an
+// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
+// needed to complete the UTF-8 character (if applicable) are returned.
+function utf8CheckIncomplete(self, buf, i) {
+  var j = buf.length - 1;
+  if (j < i) return 0;
+  var nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 1;
+    return nb;
+  }
+  if (--j < i) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 2;
+    return nb;
+  }
+  if (--j < i) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) {
+      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
+    }
+    return nb;
+  }
+  return 0;
 }
 
-function maj (x, y, z) {
-  return (x & y) | (z & (x | y))
+// Validates as many continuation bytes for a multi-byte UTF-8 character as
+// needed or are available. If we see a non-continuation byte where we expect
+// one, we "replace" the validated continuation bytes we've seen so far with
+// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
+// behavior. The continuation byte check is included three times in the case
+// where all of the continuation bytes for a character exist in the same buffer.
+// It is also done this way as a slight performance increase instead of using a
+// loop.
+function utf8CheckExtraBytes(self, buf, p) {
+  if ((buf[0] & 0xC0) !== 0x80) {
+    self.lastNeed = 0;
+    return '\ufffd'.repeat(p);
+  }
+  if (self.lastNeed > 1 && buf.length > 1) {
+    if ((buf[1] & 0xC0) !== 0x80) {
+      self.lastNeed = 1;
+      return '\ufffd'.repeat(p + 1);
+    }
+    if (self.lastNeed > 2 && buf.length > 2) {
+      if ((buf[2] & 0xC0) !== 0x80) {
+        self.lastNeed = 2;
+        return '\ufffd'.repeat(p + 2);
+      }
+    }
+  }
 }
 
-function sigma0 (x) {
-  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
+// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
+function utf8FillLast(buf) {
+  var p = this.lastTotal - this.lastNeed;
+  var r = utf8CheckExtraBytes(this, buf, p);
+  if (r !== undefined) return r;
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, p, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, p, 0, buf.length);
+  this.lastNeed -= buf.length;
 }
 
-function sigma1 (x) {
-  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
+// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
+// partial character, the character's bytes are buffered until the required
+// number of bytes are available.
+function utf8Text(buf, i) {
+  var total = utf8CheckIncomplete(this, buf, i);
+  if (!this.lastNeed) return buf.toString('utf8', i);
+  this.lastTotal = total;
+  var end = buf.length - (total - this.lastNeed);
+  buf.copy(this.lastChar, 0, end);
+  return buf.toString('utf8', i, end);
 }
 
-function gamma0 (x) {
-  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
+// For UTF-8, a replacement character for each buffered byte of a (partial)
+// character needs to be added to the output.
+function utf8End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
+  return r;
 }
 
-function gamma1 (x) {
-  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
+// UTF-16LE typically needs two bytes per character, but even if we have an even
+// number of bytes available, we need to check if we end on a leading/high
+// surrogate. In that case, we need to wait for the next two bytes in order to
+// decode the last character properly.
+function utf16Text(buf, i) {
+  if ((buf.length - i) % 2 === 0) {
+    var r = buf.toString('utf16le', i);
+    if (r) {
+      var c = r.charCodeAt(r.length - 1);
+      if (c >= 0xD800 && c <= 0xDBFF) {
+        this.lastNeed = 2;
+        this.lastTotal = 4;
+        this.lastChar[0] = buf[buf.length - 2];
+        this.lastChar[1] = buf[buf.length - 1];
+        return r.slice(0, -1);
+      }
+    }
+    return r;
+  }
+  this.lastNeed = 1;
+  this.lastTotal = 2;
+  this.lastChar[0] = buf[buf.length - 1];
+  return buf.toString('utf16le', i, buf.length - 1);
 }
 
-Sha256.prototype._update = function (M) {
-  var W = this._w
-
-  var a = this._a | 0
-  var b = this._b | 0
-  var c = this._c | 0
-  var d = this._d | 0
-  var e = this._e | 0
-  var f = this._f | 0
-  var g = this._g | 0
-  var h = this._h | 0
-
-  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
-  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0
-
-  for (var j = 0; j < 64; ++j) {
-    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
-    var T2 = (sigma0(a) + maj(a, b, c)) | 0
-
-    h = g
-    g = f
-    f = e
-    e = (d + T1) | 0
-    d = c
-    c = b
-    b = a
-    a = (T1 + T2) | 0
+// For UTF-16LE we do not explicitly append special replacement characters if we
+// end on a partial character, we simply let v8 handle that.
+function utf16End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) {
+    var end = this.lastTotal - this.lastNeed;
+    return r + this.lastChar.toString('utf16le', 0, end);
   }
-
-  this._a = (a + this._a) | 0
-  this._b = (b + this._b) | 0
-  this._c = (c + this._c) | 0
-  this._d = (d + this._d) | 0
-  this._e = (e + this._e) | 0
-  this._f = (f + this._f) | 0
-  this._g = (g + this._g) | 0
-  this._h = (h + this._h) | 0
+  return r;
 }
 
-Sha256.prototype._hash = function () {
-  var H = new Buffer(32)
-
-  H.writeInt32BE(this._a, 0)
-  H.writeInt32BE(this._b, 4)
-  H.writeInt32BE(this._c, 8)
-  H.writeInt32BE(this._d, 12)
-  H.writeInt32BE(this._e, 16)
-  H.writeInt32BE(this._f, 20)
-  H.writeInt32BE(this._g, 24)
-  H.writeInt32BE(this._h, 28)
-
-  return H
+function base64Text(buf, i) {
+  var n = (buf.length - i) % 3;
+  if (n === 0) return buf.toString('base64', i);
+  this.lastNeed = 3 - n;
+  this.lastTotal = 3;
+  if (n === 1) {
+    this.lastChar[0] = buf[buf.length - 1];
+  } else {
+    this.lastChar[0] = buf[buf.length - 2];
+    this.lastChar[1] = buf[buf.length - 1];
+  }
+  return buf.toString('base64', i, buf.length - n);
 }
 
-module.exports = Sha256
+function base64End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
+  return r;
+}
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"buffer":5,"inherits":63}],85:[function(require,module,exports){
-(function (Buffer){
-var inherits = require('inherits')
-var SHA512 = require('./sha512')
-var Hash = require('./hash')
+// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
+function simpleWrite(buf) {
+  return buf.toString(this.encoding);
+}
 
-var W = new Array(160)
+function simpleEnd(buf) {
+  return buf && buf.length ? this.write(buf) : '';
+}
+},{"safe-buffer":40}],51:[function(require,module,exports){
+(function (global){
 
-function Sha384 () {
-  this.init()
-  this._w = W
+/**
+ * Module exports.
+ */
 
-  Hash.call(this, 128, 112)
-}
+module.exports = deprecate;
 
-inherits(Sha384, SHA512)
+/**
+ * Mark that a method should not be used.
+ * Returns a modified function which warns once by default.
+ *
+ * If `localStorage.noDeprecation = true` is set, then it is a no-op.
+ *
+ * If `localStorage.throwDeprecation = true` is set, then deprecated functions
+ * will throw an Error when invoked.
+ *
+ * If `localStorage.traceDeprecation = true` is set, then deprecated functions
+ * will invoke `console.trace()` instead of `console.error()`.
+ *
+ * @param {Function} fn - the function to deprecate
+ * @param {String} msg - the string to print to the console when `fn` is invoked
+ * @returns {Function} a new "deprecated" version of `fn`
+ * @api public
+ */
 
-Sha384.prototype.init = function () {
-  this._ah = 0xcbbb9d5d
-  this._bh = 0x629a292a
-  this._ch = 0x9159015a
-  this._dh = 0x152fecd8
-  this._eh = 0x67332667
-  this._fh = 0x8eb44a87
-  this._gh = 0xdb0c2e0d
-  this._hh = 0x47b5481d
+function deprecate (fn, msg) {
+  if (config('noDeprecation')) {
+    return fn;
+  }
 
-  this._al = 0xc1059ed8
-  this._bl = 0x367cd507
-  this._cl = 0x3070dd17
-  this._dl = 0xf70e5939
-  this._el = 0xffc00b31
-  this._fl = 0x68581511
-  this._gl = 0x64f98fa7
-  this._hl = 0xbefa4fa4
+  var warned = false;
+  function deprecated() {
+    if (!warned) {
+      if (config('throwDeprecation')) {
+        throw new Error(msg);
+      } else if (config('traceDeprecation')) {
+        console.trace(msg);
+      } else {
+        console.warn(msg);
+      }
+      warned = true;
+    }
+    return fn.apply(this, arguments);
+  }
 
-  return this
+  return deprecated;
 }
 
-Sha384.prototype._hash = function () {
-  var H = new Buffer(48)
+/**
+ * Checks `localStorage` for boolean values for the given `name`.
+ *
+ * @param {String} name
+ * @returns {Boolean}
+ * @api private
+ */
 
-  function writeInt64BE (h, l, offset) {
-    H.writeInt32BE(h, offset)
-    H.writeInt32BE(l, offset + 4)
+function config (name) {
+  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
+  try {
+    if (!global.localStorage) return false;
+  } catch (_) {
+    return false;
   }
-
-  writeInt64BE(this._ah, this._al, 0)
-  writeInt64BE(this._bh, this._bl, 8)
-  writeInt64BE(this._ch, this._cl, 16)
-  writeInt64BE(this._dh, this._dl, 24)
-  writeInt64BE(this._eh, this._el, 32)
-  writeInt64BE(this._fh, this._fl, 40)
-
-  return H
+  var val = global.localStorage[name];
+  if (null == val) return false;
+  return String(val).toLowerCase() === 'true';
 }
 
-module.exports = Sha384
-
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"./sha512":86,"buffer":5,"inherits":63}],86:[function(require,module,exports){
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],52:[function(require,module,exports){
 (function (Buffer){
-var inherits = require('inherits')
-var Hash = require('./hash')
-
-var K = [
-  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
-  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
-  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
-  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
-  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
-  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
-  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
-  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
-  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
-  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
-  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
-  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
-  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
-  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
-  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
-  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
-  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
-  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
-  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
-  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
-  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
-  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
-  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
-  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
-  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
-  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
-  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
-  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
-  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
-  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
-  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
-  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
-  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
-  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
-  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
-  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
-  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
-  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
-  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
-  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
-]
-
-var W = new Array(160)
-
-function Sha512 () {
-  this.init()
-  this._w = W
+/***
+ * @license
+ * https://github.com/bitcoincashjs/bchaddr
+ * Copyright (c) 2018 Emilio Almansi
+ * Distributed under the MIT software license, see the accompanying
+ * file LICENSE or http://www.opensource.org/licenses/mit-license.php.
+ */
 
-  Hash.call(this, 128, 112)
-}
+var bs58check = require('bs58check')
+var cashaddr = require('cashaddrjs')
 
-inherits(Sha512, Hash)
+/**
+ * General purpose Bitcoin Cash address detection and translation.<br />
+ * Supports all major Bitcoin Cash address formats.<br />
+ * Currently:
+ * <ul>
+ *    <li> Legacy format </li>
+ *    <li> Bitpay format </li>
+ *    <li> Cashaddr format </li>
+ * </ul>
+ * @module bchaddr
+ */
 
-Sha512.prototype.init = function () {
-  this._ah = 0x6a09e667
-  this._bh = 0xbb67ae85
-  this._ch = 0x3c6ef372
-  this._dh = 0xa54ff53a
-  this._eh = 0x510e527f
-  this._fh = 0x9b05688c
-  this._gh = 0x1f83d9ab
-  this._hh = 0x5be0cd19
+/**
+ * @static
+ * Supported Bitcoin Cash address formats.
+ */
+var Format = {}
+Format.Legacy = 'legacy'
+Format.Bitpay = 'bitpay'
+Format.Cashaddr = 'cashaddr'
 
-  this._al = 0xf3bcc908
-  this._bl = 0x84caa73b
-  this._cl = 0xfe94f82b
-  this._dl = 0x5f1d36f1
-  this._el = 0xade682d1
-  this._fl = 0x2b3e6c1f
-  this._gl = 0xfb41bd6b
-  this._hl = 0x137e2179
+/**
+ * @static
+ * Supported networks.
+ */
+var Network = {}
+Network.Mainnet = 'mainnet'
+Network.Testnet = 'testnet'
 
-  return this
-}
+/**
+ * @static
+ * Supported address types.
+ */
+var Type = {}
+Type.P2PKH = 'p2pkh'
+Type.P2SH = 'p2sh'
 
-function Ch (x, y, z) {
-  return z ^ (x & (y ^ z))
+/**
+ * Detects what is the given address' format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function detectAddressFormat (address) {
+  return decodeAddress(address).format
 }
 
-function maj (x, y, z) {
-  return (x & y) | (z & (x | y))
+/**
+ * Detects what is the given address' network.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function detectAddressNetwork (address) {
+  return decodeAddress(address).network
 }
 
-function sigma0 (x, xl) {
-  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
+/**
+ * Detects what is the given address' type.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function detectAddressType (address) {
+  return decodeAddress(address).type
 }
 
-function sigma1 (x, xl) {
-  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
+/**
+ * Translates the given address into legacy format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function toLegacyAddress (address) {
+  var decoded = decodeAddress(address)
+  if (decoded.format === Format.Legacy) {
+    return address
+  }
+  return encodeAsLegacy(decoded)
 }
 
-function Gamma0 (x, xl) {
-  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
+/**
+ * Translates the given address into bitpay format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function toBitpayAddress (address) {
+  var decoded = decodeAddress(address)
+  if (decoded.format === Format.Bitpay) {
+    return address
+  }
+  return encodeAsBitpay(decoded)
 }
 
-function Gamma0l (x, xl) {
-  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
+/**
+ * Translates the given address into cashaddr format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {string}
+ * @throws {InvalidAddressError}
+ */
+function toCashAddress (address) {
+  var decoded = decodeAddress(address)
+  return encodeAsCashaddr(decoded)
 }
 
-function Gamma1 (x, xl) {
-  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
-}
+/**
+ * Version byte table for base58 formats.
+ * @private
+ */
+var VERSION_BYTE = {}
+VERSION_BYTE[Format.Legacy] = {}
+VERSION_BYTE[Format.Legacy][Network.Mainnet] = {}
+VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH] = 0
+VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH] = 5
+VERSION_BYTE[Format.Legacy][Network.Testnet] = {}
+VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH] = 111
+VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH] = 196
+VERSION_BYTE[Format.Bitpay] = {}
+VERSION_BYTE[Format.Bitpay][Network.Mainnet] = {}
+VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH] = 28
+VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH] = 40
+VERSION_BYTE[Format.Bitpay][Network.Testnet] = {}
+VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2PKH] = 111
+VERSION_BYTE[Format.Bitpay][Network.Testnet][Type.P2SH] = 196
 
-function Gamma1l (x, xl) {
-  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
+/**
+ * Decodes the given address into its constituting hash, format, network and type.
+ * @private
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {object}
+ * @throws {InvalidAddressError}
+ */
+function decodeAddress (address) {
+  try {
+    return decodeBase58Address(address)
+  } catch (error) {
+  }
+  try {
+    return decodeCashAddress(address)
+  } catch (error) {
+  }
+  throw new InvalidAddressError()
 }
 
-function getCarry (a, b) {
-  return (a >>> 0) < (b >>> 0) ? 1 : 0
+/**
+ * Attempts to decode the given address assuming it is a base58 address.
+ * @private
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {object}
+ * @throws {InvalidAddressError}
+ */
+function decodeBase58Address (address) {
+  try {
+    var payload = bs58check.decode(address)
+    var versionByte = payload[0]
+    var hash = Array.prototype.slice.call(payload, 1)
+    switch (versionByte) {
+      case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2PKH]:
+        return {
+          hash: hash,
+          format: Format.Legacy,
+          network: Network.Mainnet,
+          type: Type.P2PKH
+        }
+      case VERSION_BYTE[Format.Legacy][Network.Mainnet][Type.P2SH]:
+        return {
+          hash: hash,
+          format: Format.Legacy,
+          network: Network.Mainnet,
+          type: Type.P2SH
+        }
+      case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2PKH]:
+        return {
+          hash: hash,
+          format: Format.Legacy,
+          network: Network.Testnet,
+          type: Type.P2PKH
+        }
+      case VERSION_BYTE[Format.Legacy][Network.Testnet][Type.P2SH]:
+        return {
+          hash: hash,
+          format: Format.Legacy,
+          network: Network.Testnet,
+          type: Type.P2SH
+        }
+      case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2PKH]:
+        return {
+          hash: hash,
+          format: Format.Bitpay,
+          network: Network.Mainnet,
+          type: Type.P2PKH
+        }
+      case VERSION_BYTE[Format.Bitpay][Network.Mainnet][Type.P2SH]:
+        return {
+          hash: hash,
+          format: Format.Bitpay,
+          network: Network.Mainnet,
+          type: Type.P2SH
+        }
+    }
+  } catch (error) {
+  }
+  throw new InvalidAddressError()
 }
 
-Sha512.prototype._update = function (M) {
-  var W = this._w
-
-  var ah = this._ah | 0
-  var bh = this._bh | 0
-  var ch = this._ch | 0
-  var dh = this._dh | 0
-  var eh = this._eh | 0
-  var fh = this._fh | 0
-  var gh = this._gh | 0
-  var hh = this._hh | 0
-
-  var al = this._al | 0
-  var bl = this._bl | 0
-  var cl = this._cl | 0
-  var dl = this._dl | 0
-  var el = this._el | 0
-  var fl = this._fl | 0
-  var gl = this._gl | 0
-  var hl = this._hl | 0
-
-  for (var i = 0; i < 32; i += 2) {
-    W[i] = M.readInt32BE(i * 4)
-    W[i + 1] = M.readInt32BE(i * 4 + 4)
+/**
+ * Attempts to decode the given address assuming it is a cashaddr address.
+ * @private
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {object}
+ * @throws {InvalidAddressError}
+ */
+function decodeCashAddress (address) {
+  if (address.indexOf(':') !== -1) {
+    try {
+      return decodeCashAddressWithPrefix(address)
+    } catch (error) {
+    }
+  } else {
+    var prefixes = ['bitcoincash', 'bchtest', 'regtest']
+    for (var i = 0; i < prefixes.length; ++i) {
+      try {
+        var prefix = prefixes[i]
+        return decodeCashAddressWithPrefix(prefix + ':' + address)
+      } catch (error) {
+      }
+    }
   }
-  for (; i < 160; i += 2) {
-    var xh = W[i - 15 * 2]
-    var xl = W[i - 15 * 2 + 1]
-    var gamma0 = Gamma0(xh, xl)
-    var gamma0l = Gamma0l(xl, xh)
-
-    xh = W[i - 2 * 2]
-    xl = W[i - 2 * 2 + 1]
-    var gamma1 = Gamma1(xh, xl)
-    var gamma1l = Gamma1l(xl, xh)
-
-    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
-    var Wi7h = W[i - 7 * 2]
-    var Wi7l = W[i - 7 * 2 + 1]
-
-    var Wi16h = W[i - 16 * 2]
-    var Wi16l = W[i - 16 * 2 + 1]
-
-    var Wil = (gamma0l + Wi7l) | 0
-    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
-    Wil = (Wil + gamma1l) | 0
-    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
-    Wil = (Wil + Wi16l) | 0
-    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
+  throw new InvalidAddressError()
+}
 
-    W[i] = Wih
-    W[i + 1] = Wil
+/**
+ * Attempts to decode the given address assuming it is a cashaddr address with explicit prefix.
+ * @private
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @return {object}
+ * @throws {InvalidAddressError}
+ */
+function decodeCashAddressWithPrefix (address) {
+  try {
+    var decoded = cashaddr.decode(address)
+    var hash = Array.prototype.slice.call(decoded.hash, 0)
+    var type = decoded.type === 'P2PKH' ? Type.P2PKH : Type.P2SH
+    switch (decoded.prefix) {
+      case 'bitcoincash':
+        return {
+          hash: hash,
+          format: Format.Cashaddr,
+          network: Network.Mainnet,
+          type: type
+        }
+      case 'bchtest':
+      case 'regtest':
+        return {
+          hash: hash,
+          format: Format.Cashaddr,
+          network: Network.Testnet,
+          type: type
+        }
+    }
+  } catch (error) {
   }
+  throw new InvalidAddressError()
+}
 
-  for (var j = 0; j < 160; j += 2) {
-    Wih = W[j]
-    Wil = W[j + 1]
-
-    var majh = maj(ah, bh, ch)
-    var majl = maj(al, bl, cl)
-
-    var sigma0h = sigma0(ah, al)
-    var sigma0l = sigma0(al, ah)
-    var sigma1h = sigma1(eh, el)
-    var sigma1l = sigma1(el, eh)
-
-    // t1 = h + sigma1 + ch + K[j] + W[j]
-    var Kih = K[j]
-    var Kil = K[j + 1]
-
-    var chh = Ch(eh, fh, gh)
-    var chl = Ch(el, fl, gl)
-
-    var t1l = (hl + sigma1l) | 0
-    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
-    t1l = (t1l + chl) | 0
-    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
-    t1l = (t1l + Kil) | 0
-    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
-    t1l = (t1l + Wil) | 0
-    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
-
-    // t2 = sigma0 + maj
-    var t2l = (sigma0l + majl) | 0
-    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
+/**
+ * Encodes the given decoded address into legacy format.
+ * @private
+ * @param {object} decoded
+ * @returns {string}
+ */
+function encodeAsLegacy (decoded) {
+  var versionByte = VERSION_BYTE[Format.Legacy][decoded.network][decoded.type]
+  var buffer = Buffer.alloc(1 + decoded.hash.length)
+  buffer[0] = versionByte
+  buffer.set(decoded.hash, 1)
+  return bs58check.encode(buffer)
+}
 
-    hh = gh
-    hl = gl
-    gh = fh
-    gl = fl
-    fh = eh
-    fl = el
-    el = (dl + t1l) | 0
-    eh = (dh + t1h + getCarry(el, dl)) | 0
-    dh = ch
-    dl = cl
-    ch = bh
-    cl = bl
-    bh = ah
-    bl = al
-    al = (t1l + t2l) | 0
-    ah = (t1h + t2h + getCarry(al, t1l)) | 0
-  }
+/**
+ * Encodes the given decoded address into bitpay format.
+ * @private
+ * @param {object} decoded
+ * @returns {string}
+ */
+function encodeAsBitpay (decoded) {
+  var versionByte = VERSION_BYTE[Format.Bitpay][decoded.network][decoded.type]
+  var buffer = Buffer.alloc(1 + decoded.hash.length)
+  buffer[0] = versionByte
+  buffer.set(decoded.hash, 1)
+  return bs58check.encode(buffer)
+}
 
-  this._al = (this._al + al) | 0
-  this._bl = (this._bl + bl) | 0
-  this._cl = (this._cl + cl) | 0
-  this._dl = (this._dl + dl) | 0
-  this._el = (this._el + el) | 0
-  this._fl = (this._fl + fl) | 0
-  this._gl = (this._gl + gl) | 0
-  this._hl = (this._hl + hl) | 0
+/**
+ * Encodes the given decoded address into cashaddr format.
+ * @private
+ * @param {object} decoded
+ * @returns {string}
+ */
+function encodeAsCashaddr (decoded) {
+  var prefix = decoded.network === Network.Mainnet ? 'bitcoincash' : 'bchtest'
+  var type = decoded.type === Type.P2PKH ? 'P2PKH' : 'P2SH'
+  var hash = Uint8Array.from(decoded.hash)
+  return cashaddr.encode(prefix, type, hash)
+}
 
-  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
-  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
-  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
-  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
-  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
-  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
-  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
-  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
+/**
+ * Returns a boolean indicating whether the address is in legacy format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isLegacyAddress (address) {
+  return detectAddressFormat(address) === Format.Legacy
 }
 
-Sha512.prototype._hash = function () {
-  var H = new Buffer(64)
+/**
+ * Returns a boolean indicating whether the address is in bitpay format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isBitpayAddress (address) {
+  return detectAddressFormat(address) === Format.Bitpay
+}
 
-  function writeInt64BE (h, l, offset) {
-    H.writeInt32BE(h, offset)
-    H.writeInt32BE(l, offset + 4)
-  }
+/**
+ * Returns a boolean indicating whether the address is in cashaddr format.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isCashAddress (address) {
+  return detectAddressFormat(address) === Format.Cashaddr
+}
 
-  writeInt64BE(this._ah, this._al, 0)
-  writeInt64BE(this._bh, this._bl, 8)
-  writeInt64BE(this._ch, this._cl, 16)
-  writeInt64BE(this._dh, this._dl, 24)
-  writeInt64BE(this._eh, this._el, 32)
-  writeInt64BE(this._fh, this._fl, 40)
-  writeInt64BE(this._gh, this._gl, 48)
-  writeInt64BE(this._hh, this._hl, 56)
+/**
+ * Returns a boolean indicating whether the address is a mainnet address.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isMainnetAddress (address) {
+  return detectAddressNetwork(address) === Network.Mainnet
+}
 
-  return H
+/**
+ * Returns a boolean indicating whether the address is a testnet address.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isTestnetAddress (address) {
+  return detectAddressNetwork(address) === Network.Testnet
 }
 
-module.exports = Sha512
+/**
+ * Returns a boolean indicating whether the address is a p2pkh address.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isP2PKHAddress (address) {
+  return detectAddressType(address) === Type.P2PKH
+}
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":79,"buffer":5,"inherits":63}],87:[function(require,module,exports){
-var isHexPrefixed = require('is-hex-prefixed');
+/**
+ * Returns a boolean indicating whether the address is a p2sh address.
+ * @static
+ * @param {string} address - A valid Bitcoin Cash address in any format.
+ * @returns {boolean}
+ * @throws {InvalidAddressError}
+ */
+function isP2SHAddress (address) {
+  return detectAddressType(address) === Type.P2SH
+}
 
 /**
- * Removes '0x' from a given `String` is present
- * @param {String} str the string value
- * @return {String|Optional} a string by pass if necessary
+ * Error thrown when the address given as input is not a valid Bitcoin Cash address.
+ * @constructor
+ * InvalidAddressError
  */
-module.exports = function stripHexPrefix(str) {
-  if (typeof str !== 'string') {
-    return str;
-  }
+function InvalidAddressError () {
+  var error = new Error()
+  this.name = error.name = 'InvalidAddressError'
+  this.message = error.message = 'Received an invalid Bitcoin Cash address as input.'
+  this.stack = error.stack
+}
 
-  return isHexPrefixed(str) ? str.slice(2) : str;
+InvalidAddressError.prototype = Object.create(Error.prototype)
+
+module.exports = {
+  Format: Format,
+  Network: Network,
+  Type: Type,
+  detectAddressFormat: detectAddressFormat,
+  detectAddressNetwork: detectAddressNetwork,
+  detectAddressType: detectAddressType,
+  toLegacyAddress: toLegacyAddress,
+  toBitpayAddress: toBitpayAddress,
+  toCashAddress: toCashAddress,
+  isLegacyAddress: isLegacyAddress,
+  isBitpayAddress: isBitpayAddress,
+  isCashAddress: isCashAddress,
+  isMainnetAddress: isMainnetAddress,
+  isTestnetAddress: isTestnetAddress,
+  isP2PKHAddress: isP2PKHAddress,
+  isP2SHAddress: isP2SHAddress,
+  InvalidAddressError: InvalidAddressError
 }
 
-},{"is-hex-prefixed":64}]},{},[31])(31)
+}).call(this,require("buffer").Buffer)
+},{"bs58check":7,"buffer":8,"cashaddrjs":10}]},{},[52])(52)
 });</script>
-        <script>function convertRippleAdrr(address) {
-        return window.basex('rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz').encode(
-           window.basex('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz').decode(address)
-        )
-      }
-
-function convertRipplePriv(priv)   {
-        return window.basex('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz').decode(priv).toString("hex").slice(2,66)
-}   
-      
-</script>
         <script>// Select components from sjcl to suit the crypto operations bip39 requires.
 
 //// base.js
@@ -100370,6 +101886,2058 @@ WORDLISTS["italian"] = [
 "viziare", "voce", "voga", "volatile", "volere", "volpe", "voragine", "vulcano", "zampogna", "zanna",
 "zappato", "zattera", "zavorra", "zefiro", "zelante", "zelo", "zenzero", "zerbino", "zibetto", "zinco",
 "zircone", "zitto", "zolla", "zotico", "zucchero", "zufolo", "zulu", "zuppa"]
+</script>
+        <script>WORDLISTS = typeof WORDLISTS == "undefined" ? {} : WORDLISTS;
+WORDLISTS["korean"] = [
+  "가격",
+  "가끔",
+  "가난",
+  "가능",
+  "가득",
+  "가르침",
+  "가뭄",
+  "가방",
+  "가상",
+  "가슴",
+  "가운데",
+  "가을",
+  "가이드",
+  "가입",
+  "가장",
+  "가정",
+  "가족",
+  "가죽",
+  "각오",
+  "각자",
+  "간격",
+  "간부",
+  "간섭",
+  "간장",
+  "간접",
+  "간판",
+  "갈등",
+  "갈비",
+  "갈색",
+  "갈증",
+  "감각",
+  "감기",
+  "감소",
+  "감수성",
+  "감자",
+  "감정",
+  "갑자기",
+  "강남",
+  "강당",
+  "강도",
+  "강력히",
+  "강변",
+  "강북",
+  "강사",
+  "강수량",
+  "강아지",
+  "강원도",
+  "강의",
+  "강제",
+  "강조",
+  "같이",
+  "개구리",
+  "개나리",
+  "개방",
+  "개별",
+  "개선",
+  "개성",
+  "개인",
+  "객관적",
+  "거실",
+  "거액",
+  "거울",
+  "거짓",
+  "거품",
+  "걱정",
+  "건강",
+  "건물",
+  "건설",
+  "건조",
+  "건축",
+  "걸음",
+  "검사",
+  "검토",
+  "게시판",
+  "게임",
+  "겨울",
+  "견해",
+  "결과",
+  "결국",
+  "결론",
+  "결석",
+  "결승",
+  "결심",
+  "결정",
+  "결혼",
+  "경계",
+  "경고",
+  "경기",
+  "경력",
+  "경복궁",
+  "경비",
+  "경상도",
+  "경영",
+  "경우",
+  "경쟁",
+  "경제",
+  "경주",
+  "경찰",
+  "경치",
+  "경향",
+  "경험",
+  "계곡",
+  "계단",
+  "계란",
+  "계산",
+  "계속",
+  "계약",
+  "계절",
+  "계층",
+  "계획",
+  "고객",
+  "고구려",
+  "고궁",
+  "고급",
+  "고등학생",
+  "고무신",
+  "고민",
+  "고양이",
+  "고장",
+  "고전",
+  "고집",
+  "고춧가루",
+  "고통",
+  "고향",
+  "곡식",
+  "골목",
+  "골짜기",
+  "골프",
+  "공간",
+  "공개",
+  "공격",
+  "공군",
+  "공급",
+  "공기",
+  "공동",
+  "공무원",
+  "공부",
+  "공사",
+  "공식",
+  "공업",
+  "공연",
+  "공원",
+  "공장",
+  "공짜",
+  "공책",
+  "공통",
+  "공포",
+  "공항",
+  "공휴일",
+  "과목",
+  "과일",
+  "과장",
+  "과정",
+  "과학",
+  "관객",
+  "관계",
+  "관광",
+  "관념",
+  "관람",
+  "관련",
+  "관리",
+  "관습",
+  "관심",
+  "관점",
+  "관찰",
+  "광경",
+  "광고",
+  "광장",
+  "광주",
+  "괴로움",
+  "굉장히",
+  "교과서",
+  "교문",
+  "교복",
+  "교실",
+  "교양",
+  "교육",
+  "교장",
+  "교직",
+  "교통",
+  "교환",
+  "교훈",
+  "구경",
+  "구름",
+  "구멍",
+  "구별",
+  "구분",
+  "구석",
+  "구성",
+  "구속",
+  "구역",
+  "구입",
+  "구청",
+  "구체적",
+  "국가",
+  "국기",
+  "국내",
+  "국립",
+  "국물",
+  "국민",
+  "국수",
+  "국어",
+  "국왕",
+  "국적",
+  "국제",
+  "국회",
+  "군대",
+  "군사",
+  "군인",
+  "궁극적",
+  "권리",
+  "권위",
+  "권투",
+  "귀국",
+  "귀신",
+  "규정",
+  "규칙",
+  "균형",
+  "그날",
+  "그냥",
+  "그늘",
+  "그러나",
+  "그룹",
+  "그릇",
+  "그림",
+  "그제서야",
+  "그토록",
+  "극복",
+  "극히",
+  "근거",
+  "근교",
+  "근래",
+  "근로",
+  "근무",
+  "근본",
+  "근원",
+  "근육",
+  "근처",
+  "글씨",
+  "글자",
+  "금강산",
+  "금고",
+  "금년",
+  "금메달",
+  "금액",
+  "금연",
+  "금요일",
+  "금지",
+  "긍정적",
+  "기간",
+  "기관",
+  "기념",
+  "기능",
+  "기독교",
+  "기둥",
+  "기록",
+  "기름",
+  "기법",
+  "기본",
+  "기분",
+  "기쁨",
+  "기숙사",
+  "기술",
+  "기억",
+  "기업",
+  "기온",
+  "기운",
+  "기원",
+  "기적",
+  "기준",
+  "기침",
+  "기혼",
+  "기획",
+  "긴급",
+  "긴장",
+  "길이",
+  "김밥",
+  "김치",
+  "김포공항",
+  "깍두기",
+  "깜빡",
+  "깨달음",
+  "깨소금",
+  "껍질",
+  "꼭대기",
+  "꽃잎",
+  "나들이",
+  "나란히",
+  "나머지",
+  "나물",
+  "나침반",
+  "나흘",
+  "낙엽",
+  "난방",
+  "날개",
+  "날씨",
+  "날짜",
+  "남녀",
+  "남대문",
+  "남매",
+  "남산",
+  "남자",
+  "남편",
+  "남학생",
+  "낭비",
+  "낱말",
+  "내년",
+  "내용",
+  "내일",
+  "냄비",
+  "냄새",
+  "냇물",
+  "냉동",
+  "냉면",
+  "냉방",
+  "냉장고",
+  "넥타이",
+  "넷째",
+  "노동",
+  "노란색",
+  "노력",
+  "노인",
+  "녹음",
+  "녹차",
+  "녹화",
+  "논리",
+  "논문",
+  "논쟁",
+  "놀이",
+  "농구",
+  "농담",
+  "농민",
+  "농부",
+  "농업",
+  "농장",
+  "농촌",
+  "높이",
+  "눈동자",
+  "눈물",
+  "눈썹",
+  "뉴욕",
+  "느낌",
+  "늑대",
+  "능동적",
+  "능력",
+  "다방",
+  "다양성",
+  "다음",
+  "다이어트",
+  "다행",
+  "단계",
+  "단골",
+  "단독",
+  "단맛",
+  "단순",
+  "단어",
+  "단위",
+  "단점",
+  "단체",
+  "단추",
+  "단편",
+  "단풍",
+  "달걀",
+  "달러",
+  "달력",
+  "달리",
+  "닭고기",
+  "담당",
+  "담배",
+  "담요",
+  "담임",
+  "답변",
+  "답장",
+  "당근",
+  "당분간",
+  "당연히",
+  "당장",
+  "대규모",
+  "대낮",
+  "대단히",
+  "대답",
+  "대도시",
+  "대략",
+  "대량",
+  "대륙",
+  "대문",
+  "대부분",
+  "대신",
+  "대응",
+  "대장",
+  "대전",
+  "대접",
+  "대중",
+  "대책",
+  "대출",
+  "대충",
+  "대통령",
+  "대학",
+  "대한민국",
+  "대합실",
+  "대형",
+  "덩어리",
+  "데이트",
+  "도대체",
+  "도덕",
+  "도둑",
+  "도망",
+  "도서관",
+  "도심",
+  "도움",
+  "도입",
+  "도자기",
+  "도저히",
+  "도전",
+  "도중",
+  "도착",
+  "독감",
+  "독립",
+  "독서",
+  "독일",
+  "독창적",
+  "동화책",
+  "뒷모습",
+  "뒷산",
+  "딸아이",
+  "마누라",
+  "마늘",
+  "마당",
+  "마라톤",
+  "마련",
+  "마무리",
+  "마사지",
+  "마약",
+  "마요네즈",
+  "마을",
+  "마음",
+  "마이크",
+  "마중",
+  "마지막",
+  "마찬가지",
+  "마찰",
+  "마흔",
+  "막걸리",
+  "막내",
+  "막상",
+  "만남",
+  "만두",
+  "만세",
+  "만약",
+  "만일",
+  "만점",
+  "만족",
+  "만화",
+  "많이",
+  "말기",
+  "말씀",
+  "말투",
+  "맘대로",
+  "망원경",
+  "매년",
+  "매달",
+  "매력",
+  "매번",
+  "매스컴",
+  "매일",
+  "매장",
+  "맥주",
+  "먹이",
+  "먼저",
+  "먼지",
+  "멀리",
+  "메일",
+  "며느리",
+  "며칠",
+  "면담",
+  "멸치",
+  "명단",
+  "명령",
+  "명예",
+  "명의",
+  "명절",
+  "명칭",
+  "명함",
+  "모금",
+  "모니터",
+  "모델",
+  "모든",
+  "모범",
+  "모습",
+  "모양",
+  "모임",
+  "모조리",
+  "모집",
+  "모퉁이",
+  "목걸이",
+  "목록",
+  "목사",
+  "목소리",
+  "목숨",
+  "목적",
+  "목표",
+  "몰래",
+  "몸매",
+  "몸무게",
+  "몸살",
+  "몸속",
+  "몸짓",
+  "몸통",
+  "몹시",
+  "무관심",
+  "무궁화",
+  "무더위",
+  "무덤",
+  "무릎",
+  "무슨",
+  "무엇",
+  "무역",
+  "무용",
+  "무조건",
+  "무지개",
+  "무척",
+  "문구",
+  "문득",
+  "문법",
+  "문서",
+  "문제",
+  "문학",
+  "문화",
+  "물가",
+  "물건",
+  "물결",
+  "물고기",
+  "물론",
+  "물리학",
+  "물음",
+  "물질",
+  "물체",
+  "미국",
+  "미디어",
+  "미사일",
+  "미술",
+  "미역",
+  "미용실",
+  "미움",
+  "미인",
+  "미팅",
+  "미혼",
+  "민간",
+  "민족",
+  "민주",
+  "믿음",
+  "밀가루",
+  "밀리미터",
+  "밑바닥",
+  "바가지",
+  "바구니",
+  "바나나",
+  "바늘",
+  "바닥",
+  "바닷가",
+  "바람",
+  "바이러스",
+  "바탕",
+  "박물관",
+  "박사",
+  "박수",
+  "반대",
+  "반드시",
+  "반말",
+  "반발",
+  "반성",
+  "반응",
+  "반장",
+  "반죽",
+  "반지",
+  "반찬",
+  "받침",
+  "발가락",
+  "발걸음",
+  "발견",
+  "발달",
+  "발레",
+  "발목",
+  "발바닥",
+  "발생",
+  "발음",
+  "발자국",
+  "발전",
+  "발톱",
+  "발표",
+  "밤하늘",
+  "밥그릇",
+  "밥맛",
+  "밥상",
+  "밥솥",
+  "방금",
+  "방면",
+  "방문",
+  "방바닥",
+  "방법",
+  "방송",
+  "방식",
+  "방안",
+  "방울",
+  "방지",
+  "방학",
+  "방해",
+  "방향",
+  "배경",
+  "배꼽",
+  "배달",
+  "배드민턴",
+  "백두산",
+  "백색",
+  "백성",
+  "백인",
+  "백제",
+  "백화점",
+  "버릇",
+  "버섯",
+  "버튼",
+  "번개",
+  "번역",
+  "번지",
+  "번호",
+  "벌금",
+  "벌레",
+  "벌써",
+  "범위",
+  "범인",
+  "범죄",
+  "법률",
+  "법원",
+  "법적",
+  "법칙",
+  "베이징",
+  "벨트",
+  "변경",
+  "변동",
+  "변명",
+  "변신",
+  "변호사",
+  "변화",
+  "별도",
+  "별명",
+  "별일",
+  "병실",
+  "병아리",
+  "병원",
+  "보관",
+  "보너스",
+  "보라색",
+  "보람",
+  "보름",
+  "보상",
+  "보안",
+  "보자기",
+  "보장",
+  "보전",
+  "보존",
+  "보통",
+  "보편적",
+  "보험",
+  "복도",
+  "복사",
+  "복숭아",
+  "복습",
+  "볶음",
+  "본격적",
+  "본래",
+  "본부",
+  "본사",
+  "본성",
+  "본인",
+  "본질",
+  "볼펜",
+  "봉사",
+  "봉지",
+  "봉투",
+  "부근",
+  "부끄러움",
+  "부담",
+  "부동산",
+  "부문",
+  "부분",
+  "부산",
+  "부상",
+  "부엌",
+  "부인",
+  "부작용",
+  "부장",
+  "부정",
+  "부족",
+  "부지런히",
+  "부친",
+  "부탁",
+  "부품",
+  "부회장",
+  "북부",
+  "북한",
+  "분노",
+  "분량",
+  "분리",
+  "분명",
+  "분석",
+  "분야",
+  "분위기",
+  "분필",
+  "분홍색",
+  "불고기",
+  "불과",
+  "불교",
+  "불꽃",
+  "불만",
+  "불법",
+  "불빛",
+  "불안",
+  "불이익",
+  "불행",
+  "브랜드",
+  "비극",
+  "비난",
+  "비닐",
+  "비둘기",
+  "비디오",
+  "비로소",
+  "비만",
+  "비명",
+  "비밀",
+  "비바람",
+  "비빔밥",
+  "비상",
+  "비용",
+  "비율",
+  "비중",
+  "비타민",
+  "비판",
+  "빌딩",
+  "빗물",
+  "빗방울",
+  "빗줄기",
+  "빛깔",
+  "빨간색",
+  "빨래",
+  "빨리",
+  "사건",
+  "사계절",
+  "사나이",
+  "사냥",
+  "사람",
+  "사랑",
+  "사립",
+  "사모님",
+  "사물",
+  "사방",
+  "사상",
+  "사생활",
+  "사설",
+  "사슴",
+  "사실",
+  "사업",
+  "사용",
+  "사월",
+  "사장",
+  "사전",
+  "사진",
+  "사촌",
+  "사춘기",
+  "사탕",
+  "사투리",
+  "사흘",
+  "산길",
+  "산부인과",
+  "산업",
+  "산책",
+  "살림",
+  "살인",
+  "살짝",
+  "삼계탕",
+  "삼국",
+  "삼십",
+  "삼월",
+  "삼촌",
+  "상관",
+  "상금",
+  "상대",
+  "상류",
+  "상반기",
+  "상상",
+  "상식",
+  "상업",
+  "상인",
+  "상자",
+  "상점",
+  "상처",
+  "상추",
+  "상태",
+  "상표",
+  "상품",
+  "상황",
+  "새벽",
+  "색깔",
+  "색연필",
+  "생각",
+  "생명",
+  "생물",
+  "생방송",
+  "생산",
+  "생선",
+  "생신",
+  "생일",
+  "생활",
+  "서랍",
+  "서른",
+  "서명",
+  "서민",
+  "서비스",
+  "서양",
+  "서울",
+  "서적",
+  "서점",
+  "서쪽",
+  "서클",
+  "석사",
+  "석유",
+  "선거",
+  "선물",
+  "선배",
+  "선생",
+  "선수",
+  "선원",
+  "선장",
+  "선전",
+  "선택",
+  "선풍기",
+  "설거지",
+  "설날",
+  "설렁탕",
+  "설명",
+  "설문",
+  "설사",
+  "설악산",
+  "설치",
+  "설탕",
+  "섭씨",
+  "성공",
+  "성당",
+  "성명",
+  "성별",
+  "성인",
+  "성장",
+  "성적",
+  "성질",
+  "성함",
+  "세금",
+  "세미나",
+  "세상",
+  "세월",
+  "세종대왕",
+  "세탁",
+  "센터",
+  "센티미터",
+  "셋째",
+  "소규모",
+  "소극적",
+  "소금",
+  "소나기",
+  "소년",
+  "소득",
+  "소망",
+  "소문",
+  "소설",
+  "소속",
+  "소아과",
+  "소용",
+  "소원",
+  "소음",
+  "소중히",
+  "소지품",
+  "소질",
+  "소풍",
+  "소형",
+  "속담",
+  "속도",
+  "속옷",
+  "손가락",
+  "손길",
+  "손녀",
+  "손님",
+  "손등",
+  "손목",
+  "손뼉",
+  "손실",
+  "손질",
+  "손톱",
+  "손해",
+  "솔직히",
+  "솜씨",
+  "송아지",
+  "송이",
+  "송편",
+  "쇠고기",
+  "쇼핑",
+  "수건",
+  "수년",
+  "수단",
+  "수돗물",
+  "수동적",
+  "수면",
+  "수명",
+  "수박",
+  "수상",
+  "수석",
+  "수술",
+  "수시로",
+  "수업",
+  "수염",
+  "수영",
+  "수입",
+  "수준",
+  "수집",
+  "수출",
+  "수컷",
+  "수필",
+  "수학",
+  "수험생",
+  "수화기",
+  "숙녀",
+  "숙소",
+  "숙제",
+  "순간",
+  "순서",
+  "순수",
+  "순식간",
+  "순위",
+  "숟가락",
+  "술병",
+  "술집",
+  "숫자",
+  "스님",
+  "스물",
+  "스스로",
+  "스승",
+  "스웨터",
+  "스위치",
+  "스케이트",
+  "스튜디오",
+  "스트레스",
+  "스포츠",
+  "슬쩍",
+  "슬픔",
+  "습관",
+  "습기",
+  "승객",
+  "승리",
+  "승부",
+  "승용차",
+  "승진",
+  "시각",
+  "시간",
+  "시골",
+  "시금치",
+  "시나리오",
+  "시댁",
+  "시리즈",
+  "시멘트",
+  "시민",
+  "시부모",
+  "시선",
+  "시설",
+  "시스템",
+  "시아버지",
+  "시어머니",
+  "시월",
+  "시인",
+  "시일",
+  "시작",
+  "시장",
+  "시절",
+  "시점",
+  "시중",
+  "시즌",
+  "시집",
+  "시청",
+  "시합",
+  "시험",
+  "식구",
+  "식기",
+  "식당",
+  "식량",
+  "식료품",
+  "식물",
+  "식빵",
+  "식사",
+  "식생활",
+  "식초",
+  "식탁",
+  "식품",
+  "신고",
+  "신규",
+  "신념",
+  "신문",
+  "신발",
+  "신비",
+  "신사",
+  "신세",
+  "신용",
+  "신제품",
+  "신청",
+  "신체",
+  "신화",
+  "실감",
+  "실내",
+  "실력",
+  "실례",
+  "실망",
+  "실수",
+  "실습",
+  "실시",
+  "실장",
+  "실정",
+  "실질적",
+  "실천",
+  "실체",
+  "실컷",
+  "실태",
+  "실패",
+  "실험",
+  "실현",
+  "심리",
+  "심부름",
+  "심사",
+  "심장",
+  "심정",
+  "심판",
+  "쌍둥이",
+  "씨름",
+  "씨앗",
+  "아가씨",
+  "아나운서",
+  "아드님",
+  "아들",
+  "아쉬움",
+  "아스팔트",
+  "아시아",
+  "아울러",
+  "아저씨",
+  "아줌마",
+  "아직",
+  "아침",
+  "아파트",
+  "아프리카",
+  "아픔",
+  "아홉",
+  "아흔",
+  "악기",
+  "악몽",
+  "악수",
+  "안개",
+  "안경",
+  "안과",
+  "안내",
+  "안녕",
+  "안동",
+  "안방",
+  "안부",
+  "안주",
+  "알루미늄",
+  "알코올",
+  "암시",
+  "암컷",
+  "압력",
+  "앞날",
+  "앞문",
+  "애인",
+  "애정",
+  "액수",
+  "앨범",
+  "야간",
+  "야단",
+  "야옹",
+  "약간",
+  "약국",
+  "약속",
+  "약수",
+  "약점",
+  "약품",
+  "약혼녀",
+  "양념",
+  "양력",
+  "양말",
+  "양배추",
+  "양주",
+  "양파",
+  "어둠",
+  "어려움",
+  "어른",
+  "어젯밤",
+  "어쨌든",
+  "어쩌다가",
+  "어쩐지",
+  "언니",
+  "언덕",
+  "언론",
+  "언어",
+  "얼굴",
+  "얼른",
+  "얼음",
+  "얼핏",
+  "엄마",
+  "업무",
+  "업종",
+  "업체",
+  "엉덩이",
+  "엉망",
+  "엉터리",
+  "엊그제",
+  "에너지",
+  "에어컨",
+  "엔진",
+  "여건",
+  "여고생",
+  "여관",
+  "여군",
+  "여권",
+  "여대생",
+  "여덟",
+  "여동생",
+  "여든",
+  "여론",
+  "여름",
+  "여섯",
+  "여성",
+  "여왕",
+  "여인",
+  "여전히",
+  "여직원",
+  "여학생",
+  "여행",
+  "역사",
+  "역시",
+  "역할",
+  "연결",
+  "연구",
+  "연극",
+  "연기",
+  "연락",
+  "연설",
+  "연세",
+  "연속",
+  "연습",
+  "연애",
+  "연예인",
+  "연인",
+  "연장",
+  "연주",
+  "연출",
+  "연필",
+  "연합",
+  "연휴",
+  "열기",
+  "열매",
+  "열쇠",
+  "열심히",
+  "열정",
+  "열차",
+  "열흘",
+  "염려",
+  "엽서",
+  "영국",
+  "영남",
+  "영상",
+  "영양",
+  "영역",
+  "영웅",
+  "영원히",
+  "영하",
+  "영향",
+  "영혼",
+  "영화",
+  "옆구리",
+  "옆방",
+  "옆집",
+  "예감",
+  "예금",
+  "예방",
+  "예산",
+  "예상",
+  "예선",
+  "예술",
+  "예습",
+  "예식장",
+  "예약",
+  "예전",
+  "예절",
+  "예정",
+  "예컨대",
+  "옛날",
+  "오늘",
+  "오락",
+  "오랫동안",
+  "오렌지",
+  "오로지",
+  "오른발",
+  "오븐",
+  "오십",
+  "오염",
+  "오월",
+  "오전",
+  "오직",
+  "오징어",
+  "오페라",
+  "오피스텔",
+  "오히려",
+  "옥상",
+  "옥수수",
+  "온갖",
+  "온라인",
+  "온몸",
+  "온종일",
+  "온통",
+  "올가을",
+  "올림픽",
+  "올해",
+  "옷차림",
+  "와이셔츠",
+  "와인",
+  "완성",
+  "완전",
+  "왕비",
+  "왕자",
+  "왜냐하면",
+  "왠지",
+  "외갓집",
+  "외국",
+  "외로움",
+  "외삼촌",
+  "외출",
+  "외침",
+  "외할머니",
+  "왼발",
+  "왼손",
+  "왼쪽",
+  "요금",
+  "요일",
+  "요즘",
+  "요청",
+  "용기",
+  "용서",
+  "용어",
+  "우산",
+  "우선",
+  "우승",
+  "우연히",
+  "우정",
+  "우체국",
+  "우편",
+  "운동",
+  "운명",
+  "운반",
+  "운전",
+  "운행",
+  "울산",
+  "울음",
+  "움직임",
+  "웃어른",
+  "웃음",
+  "워낙",
+  "원고",
+  "원래",
+  "원서",
+  "원숭이",
+  "원인",
+  "원장",
+  "원피스",
+  "월급",
+  "월드컵",
+  "월세",
+  "월요일",
+  "웨이터",
+  "위반",
+  "위법",
+  "위성",
+  "위원",
+  "위험",
+  "위협",
+  "윗사람",
+  "유난히",
+  "유럽",
+  "유명",
+  "유물",
+  "유산",
+  "유적",
+  "유치원",
+  "유학",
+  "유행",
+  "유형",
+  "육군",
+  "육상",
+  "육십",
+  "육체",
+  "은행",
+  "음력",
+  "음료",
+  "음반",
+  "음성",
+  "음식",
+  "음악",
+  "음주",
+  "의견",
+  "의논",
+  "의문",
+  "의복",
+  "의식",
+  "의심",
+  "의외로",
+  "의욕",
+  "의원",
+  "의학",
+  "이것",
+  "이곳",
+  "이념",
+  "이놈",
+  "이달",
+  "이대로",
+  "이동",
+  "이렇게",
+  "이력서",
+  "이론적",
+  "이름",
+  "이민",
+  "이발소",
+  "이별",
+  "이불",
+  "이빨",
+  "이상",
+  "이성",
+  "이슬",
+  "이야기",
+  "이용",
+  "이웃",
+  "이월",
+  "이윽고",
+  "이익",
+  "이전",
+  "이중",
+  "이튿날",
+  "이틀",
+  "이혼",
+  "인간",
+  "인격",
+  "인공",
+  "인구",
+  "인근",
+  "인기",
+  "인도",
+  "인류",
+  "인물",
+  "인생",
+  "인쇄",
+  "인연",
+  "인원",
+  "인재",
+  "인종",
+  "인천",
+  "인체",
+  "인터넷",
+  "인하",
+  "인형",
+  "일곱",
+  "일기",
+  "일단",
+  "일대",
+  "일등",
+  "일반",
+  "일본",
+  "일부",
+  "일상",
+  "일생",
+  "일손",
+  "일요일",
+  "일월",
+  "일정",
+  "일종",
+  "일주일",
+  "일찍",
+  "일체",
+  "일치",
+  "일행",
+  "일회용",
+  "임금",
+  "임무",
+  "입대",
+  "입력",
+  "입맛",
+  "입사",
+  "입술",
+  "입시",
+  "입원",
+  "입장",
+  "입학",
+  "자가용",
+  "자격",
+  "자극",
+  "자동",
+  "자랑",
+  "자부심",
+  "자식",
+  "자신",
+  "자연",
+  "자원",
+  "자율",
+  "자전거",
+  "자정",
+  "자존심",
+  "자판",
+  "작가",
+  "작년",
+  "작성",
+  "작업",
+  "작용",
+  "작은딸",
+  "작품",
+  "잔디",
+  "잔뜩",
+  "잔치",
+  "잘못",
+  "잠깐",
+  "잠수함",
+  "잠시",
+  "잠옷",
+  "잠자리",
+  "잡지",
+  "장관",
+  "장군",
+  "장기간",
+  "장래",
+  "장례",
+  "장르",
+  "장마",
+  "장면",
+  "장모",
+  "장미",
+  "장비",
+  "장사",
+  "장소",
+  "장식",
+  "장애인",
+  "장인",
+  "장점",
+  "장차",
+  "장학금",
+  "재능",
+  "재빨리",
+  "재산",
+  "재생",
+  "재작년",
+  "재정",
+  "재채기",
+  "재판",
+  "재학",
+  "재활용",
+  "저것",
+  "저고리",
+  "저곳",
+  "저녁",
+  "저런",
+  "저렇게",
+  "저번",
+  "저울",
+  "저절로",
+  "저축",
+  "적극",
+  "적당히",
+  "적성",
+  "적용",
+  "적응",
+  "전개",
+  "전공",
+  "전기",
+  "전달",
+  "전라도",
+  "전망",
+  "전문",
+  "전반",
+  "전부",
+  "전세",
+  "전시",
+  "전용",
+  "전자",
+  "전쟁",
+  "전주",
+  "전철",
+  "전체",
+  "전통",
+  "전혀",
+  "전후",
+  "절대",
+  "절망",
+  "절반",
+  "절약",
+  "절차",
+  "점검",
+  "점수",
+  "점심",
+  "점원",
+  "점점",
+  "점차",
+  "접근",
+  "접시",
+  "접촉",
+  "젓가락",
+  "정거장",
+  "정도",
+  "정류장",
+  "정리",
+  "정말",
+  "정면",
+  "정문",
+  "정반대",
+  "정보",
+  "정부",
+  "정비",
+  "정상",
+  "정성",
+  "정오",
+  "정원",
+  "정장",
+  "정지",
+  "정치",
+  "정확히",
+  "제공",
+  "제과점",
+  "제대로",
+  "제목",
+  "제발",
+  "제법",
+  "제삿날",
+  "제안",
+  "제일",
+  "제작",
+  "제주도",
+  "제출",
+  "제품",
+  "제한",
+  "조각",
+  "조건",
+  "조금",
+  "조깅",
+  "조명",
+  "조미료",
+  "조상",
+  "조선",
+  "조용히",
+  "조절",
+  "조정",
+  "조직",
+  "존댓말",
+  "존재",
+  "졸업",
+  "졸음",
+  "종교",
+  "종로",
+  "종류",
+  "종소리",
+  "종업원",
+  "종종",
+  "종합",
+  "좌석",
+  "죄인",
+  "주관적",
+  "주름",
+  "주말",
+  "주머니",
+  "주먹",
+  "주문",
+  "주민",
+  "주방",
+  "주변",
+  "주식",
+  "주인",
+  "주일",
+  "주장",
+  "주전자",
+  "주택",
+  "준비",
+  "줄거리",
+  "줄기",
+  "줄무늬",
+  "중간",
+  "중계방송",
+  "중국",
+  "중년",
+  "중단",
+  "중독",
+  "중반",
+  "중부",
+  "중세",
+  "중소기업",
+  "중순",
+  "중앙",
+  "중요",
+  "중학교",
+  "즉석",
+  "즉시",
+  "즐거움",
+  "증가",
+  "증거",
+  "증권",
+  "증상",
+  "증세",
+  "지각",
+  "지갑",
+  "지경",
+  "지극히",
+  "지금",
+  "지급",
+  "지능",
+  "지름길",
+  "지리산",
+  "지방",
+  "지붕",
+  "지식",
+  "지역",
+  "지우개",
+  "지원",
+  "지적",
+  "지점",
+  "지진",
+  "지출",
+  "직선",
+  "직업",
+  "직원",
+  "직장",
+  "진급",
+  "진동",
+  "진로",
+  "진료",
+  "진리",
+  "진짜",
+  "진찰",
+  "진출",
+  "진통",
+  "진행",
+  "질문",
+  "질병",
+  "질서",
+  "짐작",
+  "집단",
+  "집안",
+  "집중",
+  "짜증",
+  "찌꺼기",
+  "차남",
+  "차라리",
+  "차량",
+  "차림",
+  "차별",
+  "차선",
+  "차츰",
+  "착각",
+  "찬물",
+  "찬성",
+  "참가",
+  "참기름",
+  "참새",
+  "참석",
+  "참여",
+  "참외",
+  "참조",
+  "찻잔",
+  "창가",
+  "창고",
+  "창구",
+  "창문",
+  "창밖",
+  "창작",
+  "창조",
+  "채널",
+  "채점",
+  "책가방",
+  "책방",
+  "책상",
+  "책임",
+  "챔피언",
+  "처벌",
+  "처음",
+  "천국",
+  "천둥",
+  "천장",
+  "천재",
+  "천천히",
+  "철도",
+  "철저히",
+  "철학",
+  "첫날",
+  "첫째",
+  "청년",
+  "청바지",
+  "청소",
+  "청춘",
+  "체계",
+  "체력",
+  "체온",
+  "체육",
+  "체중",
+  "체험",
+  "초등학생",
+  "초반",
+  "초밥",
+  "초상화",
+  "초순",
+  "초여름",
+  "초원",
+  "초저녁",
+  "초점",
+  "초청",
+  "초콜릿",
+  "촛불",
+  "총각",
+  "총리",
+  "총장",
+  "촬영",
+  "최근",
+  "최상",
+  "최선",
+  "최신",
+  "최악",
+  "최종",
+  "추석",
+  "추억",
+  "추진",
+  "추천",
+  "추측",
+  "축구",
+  "축소",
+  "축제",
+  "축하",
+  "출근",
+  "출발",
+  "출산",
+  "출신",
+  "출연",
+  "출입",
+  "출장",
+  "출판",
+  "충격",
+  "충고",
+  "충돌",
+  "충분히",
+  "충청도",
+  "취업",
+  "취직",
+  "취향",
+  "치약",
+  "친구",
+  "친척",
+  "칠십",
+  "칠월",
+  "칠판",
+  "침대",
+  "침묵",
+  "침실",
+  "칫솔",
+  "칭찬",
+  "카메라",
+  "카운터",
+  "칼국수",
+  "캐릭터",
+  "캠퍼스",
+  "캠페인",
+  "커튼",
+  "컨디션",
+  "컬러",
+  "컴퓨터",
+  "코끼리",
+  "코미디",
+  "콘서트",
+  "콜라",
+  "콤플렉스",
+  "콩나물",
+  "쾌감",
+  "쿠데타",
+  "크림",
+  "큰길",
+  "큰딸",
+  "큰소리",
+  "큰아들",
+  "큰어머니",
+  "큰일",
+  "큰절",
+  "클래식",
+  "클럽",
+  "킬로",
+  "타입",
+  "타자기",
+  "탁구",
+  "탁자",
+  "탄생",
+  "태권도",
+  "태양",
+  "태풍",
+  "택시",
+  "탤런트",
+  "터널",
+  "터미널",
+  "테니스",
+  "테스트",
+  "테이블",
+  "텔레비전",
+  "토론",
+  "토마토",
+  "토요일",
+  "통계",
+  "통과",
+  "통로",
+  "통신",
+  "통역",
+  "통일",
+  "통장",
+  "통제",
+  "통증",
+  "통합",
+  "통화",
+  "퇴근",
+  "퇴원",
+  "퇴직금",
+  "튀김",
+  "트럭",
+  "특급",
+  "특별",
+  "특성",
+  "특수",
+  "특징",
+  "특히",
+  "튼튼히",
+  "티셔츠",
+  "파란색",
+  "파일",
+  "파출소",
+  "판결",
+  "판단",
+  "판매",
+  "판사",
+  "팔십",
+  "팔월",
+  "팝송",
+  "패션",
+  "팩스",
+  "팩시밀리",
+  "팬티",
+  "퍼센트",
+  "페인트",
+  "편견",
+  "편의",
+  "편지",
+  "편히",
+  "평가",
+  "평균",
+  "평생",
+  "평소",
+  "평양",
+  "평일",
+  "평화",
+  "포스터",
+  "포인트",
+  "포장",
+  "포함",
+  "표면",
+  "표정",
+  "표준",
+  "표현",
+  "품목",
+  "품질",
+  "풍경",
+  "풍속",
+  "풍습",
+  "프랑스",
+  "프린터",
+  "플라스틱",
+  "피곤",
+  "피망",
+  "피아노",
+  "필름",
+  "필수",
+  "필요",
+  "필자",
+  "필통",
+  "핑계",
+  "하느님",
+  "하늘",
+  "하드웨어",
+  "하룻밤",
+  "하반기",
+  "하숙집",
+  "하순",
+  "하여튼",
+  "하지만",
+  "하천",
+  "하품",
+  "하필",
+  "학과",
+  "학교",
+  "학급",
+  "학기",
+  "학년",
+  "학력",
+  "학번",
+  "학부모",
+  "학비",
+  "학생",
+  "학술",
+  "학습",
+  "학용품",
+  "학원",
+  "학위",
+  "학자",
+  "학점",
+  "한계",
+  "한글",
+  "한꺼번에",
+  "한낮",
+  "한눈",
+  "한동안",
+  "한때",
+  "한라산",
+  "한마디",
+  "한문",
+  "한번",
+  "한복",
+  "한식",
+  "한여름",
+  "한쪽",
+  "할머니",
+  "할아버지",
+  "할인",
+  "함께",
+  "함부로",
+  "합격",
+  "합리적",
+  "항공",
+  "항구",
+  "항상",
+  "항의",
+  "해결",
+  "해군",
+  "해답",
+  "해당",
+  "해물",
+  "해석",
+  "해설",
+  "해수욕장",
+  "해안",
+  "핵심",
+  "핸드백",
+  "햄버거",
+  "햇볕",
+  "햇살",
+  "행동",
+  "행복",
+  "행사",
+  "행운",
+  "행위",
+  "향기",
+  "향상",
+  "향수",
+  "허락",
+  "허용",
+  "헬기",
+  "현관",
+  "현금",
+  "현대",
+  "현상",
+  "현실",
+  "현장",
+  "현재",
+  "현지",
+  "혈액",
+  "협력",
+  "형부",
+  "형사",
+  "형수",
+  "형식",
+  "형제",
+  "형태",
+  "형편",
+  "혜택",
+  "호기심",
+  "호남",
+  "호랑이",
+  "호박",
+  "호텔",
+  "호흡",
+  "혹시",
+  "홀로",
+  "홈페이지",
+  "홍보",
+  "홍수",
+  "홍차",
+  "화면",
+  "화분",
+  "화살",
+  "화요일",
+  "화장",
+  "화학",
+  "확보",
+  "확인",
+  "확장",
+  "확정",
+  "환갑",
+  "환경",
+  "환영",
+  "환율",
+  "환자",
+  "활기",
+  "활동",
+  "활발히",
+  "활용",
+  "활짝",
+  "회견",
+  "회관",
+  "회복",
+  "회색",
+  "회원",
+  "회장",
+  "회전",
+  "횟수",
+  "횡단보도",
+  "효율적",
+  "후반",
+  "후춧가루",
+  "훈련",
+  "훨씬",
+  "휴식",
+  "휴일",
+  "흉내",
+  "흐름",
+  "흑백",
+  "흑인",
+  "흔적",
+  "흔히",
+  "흥미",
+  "흥분",
+  "희곡",
+  "희망",
+  "희생",
+  "흰색",
+  "힘껏"
+]
 </script>
         <script>/*
  * Copyright (c) 2013 Pavol Rusnak
@@ -100529,14 +104097,7 @@ var Mnemonic = function(language) {
     }
 
     self.normalizeString = function(str) {
-        if (typeof str.normalize == "function") {
-            return str.normalize("NFKD");
-        }
-        else {
-            // TODO decide how to handle this in the future.
-            // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize
-            return str;
-        }
+        return str.normalize("NFKD");
     }
 
     function byteArrayToWordArray(data) {
@@ -102632,7 +106193,9 @@ window.Entropy = new (function() {
     DOM.entropyWordCount = DOM.entropyContainer.find(".word-count");
     DOM.entropyBinary = DOM.entropyContainer.find(".binary");
     DOM.entropyWordIndexes = DOM.entropyContainer.find(".word-indexes");
+    DOM.entropyChecksum = DOM.entropyContainer.find(".checksum");
     DOM.entropyMnemonicLength = DOM.entropyContainer.find(".mnemonic-length");
+    DOM.entropyWeakEntropyOverrideWarning = DOM.entropyContainer.find(".weak-entropy-override-warning");
     DOM.entropyFilterWarning = DOM.entropyContainer.find(".filter-warning");
     DOM.phrase = $(".phrase");
     DOM.passphrase = $(".passphrase");
@@ -102681,9 +106244,10 @@ window.Entropy = new (function() {
     DOM.bip141path = $("#bip141-path");
     DOM.bip141semantics = $(".bip141-semantics");
     DOM.generatedStrength = $(".generate-container .strength");
+    DOM.generatedStrengthWarning = $(".generate-container .warning");
     DOM.hardenedAddresses = $(".hardened-addresses");
-    DOM.useBitpayAddressesContainer = $(".use-bitpay-addresses-container");
-    DOM.useBitpayAddresses = $(".use-bitpay-addresses");
+    DOM.bitcoinCashAddressTypeContainer = $(".bch-addr-type-container");
+    DOM.bitcoinCashAddressType = $("[name=bch-addr-type]")
     DOM.useBip38 = $(".use-bip38");
     DOM.bip38Password = $(".bip38-password");
     DOM.addresses = $(".addresses");
@@ -102707,6 +106271,7 @@ window.Entropy = new (function() {
 
     function init() {
         // Events
+        DOM.generatedStrength.on("change", generatedStrengthChanged);
         DOM.network.on("change", networkChanged);
         DOM.bip32Client.on("change", bip32ClientChanged);
         DOM.useEntropy.on("change", setEntropyVisibility);
@@ -102737,7 +106302,7 @@ window.Entropy = new (function() {
         DOM.privateKeyToggle.on("click", togglePrivateKeys);
         DOM.csvTab.on("click", updateCsv);
         DOM.languages.on("click", languageChanged);
-        DOM.useBitpayAddresses.on("change", useBitpayAddressesChange);
+        DOM.bitcoinCashAddressType.on("change", bitcoinCashAddressTypeChange);
         setQrEvents(DOM.showQrEls);
         disableForms();
         hidePending();
@@ -102748,11 +106313,21 @@ window.Entropy = new (function() {
 
     // Event handlers
 
+    function generatedStrengthChanged() {
+        var strength = parseInt(DOM.generatedStrength.val());
+        if (strength < 12) {
+            DOM.generatedStrengthWarning.removeClass("hidden");
+        }
+        else {
+            DOM.generatedStrengthWarning.addClass("hidden");
+        }
+    }
+
     function networkChanged(e) {
         clearDerivedKeys();
         clearAddressesList();
         DOM.litecoinLtubContainer.addClass("hidden");
-        DOM.useBitpayAddressesContainer.addClass("hidden");
+        DOM.bitcoinCashAddressTypeContainer.addClass("hidden");
         var networkIndex = e.target.value;
         var network = networks[networkIndex];
         network.onSelect();
@@ -103004,8 +106579,7 @@ window.Entropy = new (function() {
         }, 50);
     }
 
-    function useBitpayAddressesChange() {
-        setBitcoinCashNetworkValues();
+    function bitcoinCashAddressTypeChange() {
         phraseChanged();
     }
 
@@ -103432,6 +107006,16 @@ window.Entropy = new (function() {
                     privkey = convertRipplePriv(privkey);
                     address = convertRippleAdrr(address);
                 }
+                // Bitcoin Cash address format may vary
+                if (networks[DOM.network.val()].name == "BCH - Bitcoin Cash") {
+                    var bchAddrType = DOM.bitcoinCashAddressType.filter(":checked").val();
+                    if (bchAddrType == "cashaddr") {
+                        address = bchaddr.toCashAddress(address);
+                    }
+                    else if (bchAddrType == "bitpay") {
+                        address = bchaddr.toBitpayAddress(address);
+                    }
+                }
                 // Segwit addresses are different
                 if (isSegwit) {
                     if (!segwitAvailable) {
@@ -103771,6 +107355,17 @@ window.Entropy = new (function() {
             mnemonicLength = parseInt(mnemonicLength);
             var numberOfBits = 32 * mnemonicLength / 3;
             bits = bits.substring(0, numberOfBits);
+            // show warning for weak entropy override
+            if (mnemonicLength / 3 * 32 > entropy.binaryStr.length) {
+                DOM.entropyWeakEntropyOverrideWarning.removeClass("hidden");
+            }
+            else {
+                DOM.entropyWeakEntropyOverrideWarning.addClass("hidden");
+            }
+        }
+        else {
+            // hide warning for weak entropy override
+            DOM.entropyWeakEntropyOverrideWarning.addClass("hidden");
         }
         // Discard trailing entropy
         var bitsToUse = Math.floor(bits.length / 32) * 32;
@@ -103789,6 +107384,8 @@ window.Entropy = new (function() {
         DOM.phrase.val(phrase);
         // Show the word indexes
         showWordIndexes();
+        // Show the checksum
+        showChecksum();
     }
 
     function clearEntropyFeedback() {
@@ -103819,13 +107416,14 @@ window.Entropy = new (function() {
         var entropyTypeStr = getEntropyTypeStr(entropy);
         var wordCount = Math.floor(numberOfBits / 32) * 3;
         var bitsPerEvent = entropy.bitsPerEvent.toFixed(2);
+        var spacedBinaryStr = addSpacesEveryElevenBits(entropy.binaryStr);
         DOM.entropyFiltered.html(entropy.cleanHtml);
         DOM.entropyType.text(entropyTypeStr);
         DOM.entropyCrackTime.text(timeToCrack);
         DOM.entropyEventCount.text(entropy.base.ints.length);
         DOM.entropyBits.text(numberOfBits);
         DOM.entropyWordCount.text(wordCount);
-        DOM.entropyBinary.text(entropy.binaryStr);
+        DOM.entropyBinary.text(spacedBinaryStr);
         DOM.entropyBitsPerEvent.text(bitsPerEvent);
         // detect and warn of filtering
         var rawNoSpaces = DOM.entropy.val().replace(/\s/g, "");
@@ -103983,19 +107581,6 @@ window.Entropy = new (function() {
         DOM.bip141unavailable.removeClass("hidden");
     }
 
-    function useBitpayAddresses() {
-        return !(DOM.useBitpayAddresses.prop("checked"));
-    }
-
-    function setBitcoinCashNetworkValues() {
-        if (useBitpayAddresses()) {
-            network = bitcoinjs.bitcoin.networks.bitcoin;
-        }
-        else {
-            network = bitcoinjs.bitcoin.networks.bitcoinCashBitbpay;
-        }
-    }
-
     function adjustNetworkForSegwit() {
         // If segwit is selected the xpub/xprv prefixes need to be adjusted
         // to avoid accidentally importing BIP49 xpub to BIP44 watch only
@@ -104050,6 +107635,35 @@ window.Entropy = new (function() {
         DOM.entropyWordIndexes.text(wordIndexesStr);
     }
 
+    function showChecksum() {
+        var phrase = DOM.phrase.val();
+        var words = phraseToWordArray(phrase);
+        var checksumBitlength = words.length / 3;
+        var checksum = "";
+        var binaryStr = "";
+        var language = getLanguage();
+        for (var i=words.length-1; i>=0; i--) {
+            var word = words[i];
+            var wordIndex = WORDLISTS[language].indexOf(word);
+            var wordBinary = wordIndex.toString(2);
+            while (wordBinary.length < 11) {
+                wordBinary = "0" + wordBinary;
+            }
+            var binaryStr = wordBinary + binaryStr;
+            if (binaryStr.length >= checksumBitlength) {
+                var start = binaryStr.length - checksumBitlength;
+                var end = binaryStr.length;
+                checksum = binaryStr.substring(start, end);
+                // add spaces so the last group is 11 bits, not the first
+                checksum = checksum.split("").reverse().join("")
+                checksum = addSpacesEveryElevenBits(checksum);
+                checksum = checksum.split("").reverse().join("")
+                break;
+            }
+        }
+        DOM.entropyChecksum.text(checksum);
+    }
+
     function updateCsv() {
         var tableCsv = "path,address,public key,private key\n";
         var rows = DOM.addresses.find("tr");
@@ -104070,7 +107684,35 @@ window.Entropy = new (function() {
         DOM.csv.val(tableCsv);
     }
 
+    function addSpacesEveryElevenBits(binaryStr) {
+        return binaryStr.match(/.{1,11}/g).join(" ");
+    }
+
     var networks = [
+        {
+            name: "AC - Asiacoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.asiacoin;
+                setHdCoin(51);
+            },
+        },
+        {
+            name: "ACC - Adcoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.adcoin;
+                setHdCoin(161);
+            },
+        },
+        {
+            name: "AUR - Auroracoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.auroracoin;
+                setHdCoin(85);
+            },
+        },
         {
             name: "AXE - Axe",
             segwitAvailable: false,
@@ -104079,15 +107721,70 @@ window.Entropy = new (function() {
                 setHdCoin(0);
             },
         },
+        {
+            name: "BCA - Bitcoin Atom",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.atom;
+                setHdCoin(185);
+            },
+        },
         {
             name: "BCH - Bitcoin Cash",
             segwitAvailable: false,
             onSelect: function() {
-                DOM.useBitpayAddressesContainer.removeClass("hidden");
-                setBitcoinCashNetworkValues();
+                DOM.bitcoinCashAddressTypeContainer.removeClass("hidden");
                 setHdCoin(145);
             },
         },
+        {
+            name: "BEET - Beetlecoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.beetlecoin;
+                setHdCoin(800);
+            },
+        },
+        {
+            name: "BELA - Belacoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.belacoin;
+                setHdCoin(73);
+            },
+        },
+        {
+            name: "BLK - BlackCoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.blackcoin;
+                setHdCoin(10);
+            },
+        },
+        {
+            name: "BRIT - Britcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.britcoin;
+                setHdCoin(70);
+            },
+        },
+        {
+            name: "BSD - Bitsend",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.bitsend;
+                setHdCoin(91);
+            },
+        },
+        {
+            name: "BTA - Bata",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.bata;
+                setHdCoin(89);
+            },
+        },
         {
             name: "BTC - Bitcoin",
             segwitAvailable: true,
@@ -104109,7 +107806,31 @@ window.Entropy = new (function() {
             segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.bgold;
-                setHdCoin(0);
+                setHdCoin(156);
+            },
+        },
+        {
+            name: "BTX - Bitcore",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.bitcore;
+                setHdCoin(160);
+            },
+        },
+        {
+            name: "CCN - Cannacoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.cannacoin;
+                setHdCoin(19);
+            },
+        },
+        {
+            name: "CDN - Canadaecoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.canadaecoin;
+                setHdCoin(34);
             },
         },
         {
@@ -104120,6 +107841,30 @@ window.Entropy = new (function() {
                 setHdCoin(23);
             },
         },
+        {
+            name: "CLUB - Clubcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.clubcoin;
+                setHdCoin(79);
+            },
+        },
+        {
+            name: "CMP - Compcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.compcoin;
+                setHdCoin(71);
+            },
+        },
+        {
+            name: "CRAVE - Crave",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.crave;
+                setHdCoin(186);
+            },
+        },
         {
             name: "CRW - Crown",
             segwitAvailable: false,
@@ -104144,12 +107889,44 @@ window.Entropy = new (function() {
                 setHdCoin(1);
             },
         },
+        {
+            name: "DFC - Defcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.defcoin;
+                setHdCoin(1337);
+            },
+        },
+        {
+            name: "DGB - Digibyte",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.digibyte;
+                setHdCoin(20);
+            },
+        },
+        {
+            name: "DGC - Digitalcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.digitalcoin;
+                setHdCoin(18);
+            },
+        },
+        {
+            name: "DMD - Diamond",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.diamond;
+                setHdCoin(152);
+            },
+        },
         {
             name: "DNR - Denarius",
             segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.denarius;
-                setHdCoin(0);
+                setHdCoin(116);
             },
         },
         {
@@ -104160,6 +107937,46 @@ window.Entropy = new (function() {
                 setHdCoin(3);
             },
         },
+        {
+            name: "ECN - Ecoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.ecoin;
+                setHdCoin(115);
+            },
+        },
+        {
+            name: "EDRC - Edrcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.edrcoin;
+                setHdCoin(56);
+            },
+        },
+        {
+            name: "EFL - Egulden",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.egulden;
+                setHdCoin(78);
+            },
+        },
+        {
+            name: "EMC2 - Einsteinium",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.einsteinium;
+                setHdCoin(41);
+            },
+        },
+        {
+            name: "ERC - Europecoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.europecoin;
+                setHdCoin(151);
+            },
+        },
         {
             name: "ETH - Ethereum",
             segwitAvailable: false,
@@ -104169,13 +107986,45 @@ window.Entropy = new (function() {
             },
         },
         {
-            name: "FJC - Fujicoin",
+            name: "EXCL - Exclusivecoin",
             segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.exclusivecoin;
+                setHdCoin(190);
+            },
+        },
+        {
+            name: "FJC - Fujicoin",
+            segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.fujicoin;
                 setHdCoin(75);
             },
         },
+        {
+            name: "FLASH - Flashcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.flashcoin;
+                setHdCoin(120);
+            },
+        },
+        {
+            name: "FRST - Firstcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.firstcoin;
+                setHdCoin(167);
+            },
+        },
+        {
+            name: "FTC - Feathercoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.feathercoin;
+                setHdCoin(8);
+            },
+        },
         {
             name: "GAME - GameCredits",
             segwitAvailable: false,
@@ -104184,6 +108033,62 @@ window.Entropy = new (function() {
                 setHdCoin(101);
             },
         },
+        {
+            name: "GBX - Gobyte",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.gobyte;
+                setHdCoin(176);
+            },
+        },
+        {
+            name: "GCR - GCRCoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.gcr;
+                setHdCoin(79);
+            },
+        },
+        {
+            name: "GRC - Gridcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.gridcoin;
+                setHdCoin(84);
+            },
+        },
+        {
+            name: "HNC - Helleniccoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.helleniccoin;
+                setHdCoin(168);
+            },
+        },
+        {
+            name: "INSN - Insane",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.insane;
+                setHdCoin(68);
+            },
+        },
+        {
+            name: "IOP - Iop",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.iop;
+                setHdCoin(66);
+            },
+        },
+        {
+            name: "IXC - Ixcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.ixcoin;
+                setHdCoin(86);
+            },
+        },
         {
             name: "JBS - Jumbucks",
             segwitAvailable: false,
@@ -104200,6 +108105,46 @@ window.Entropy = new (function() {
                 setHdCoin(141);
             },
         },
+        {
+            name: "KOBO - Kobocoin",
+            bip49available: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.kobocoin;
+                setHdCoin(196);
+            },
+        },
+        {
+            name: "LBC - Library Credits",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.lbry;
+                setHdCoin(140);
+            },
+        },
+        {
+            name: "LCC - Litecoincash",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.litecoincash;
+                setHdCoin(192);
+            },
+        },
+        {
+            name: "LDCN - Landcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.landcoin;
+                setHdCoin(63);
+            },
+        },
+        {
+            name: "LINX - Linx",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.linx;
+                setHdCoin(114);
+            },
+        },
         {
             name: "LTC - Litecoin",
             segwitAvailable: true,
@@ -104209,6 +108154,14 @@ window.Entropy = new (function() {
                 DOM.litecoinLtubContainer.removeClass("hidden");
             },
         },
+        {
+            name: "LYNX - Lynx",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.lynx;
+                setHdCoin(191);
+            },
+        },
         {
             name: "MAZA - Maza",
             segwitAvailable: false,
@@ -104217,6 +108170,14 @@ window.Entropy = new (function() {
                 setHdCoin(13);
             },
         },
+        {
+            name: "MNX - Minexcoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.minexcoin;
+                setHdCoin(182);
+            },
+        },
         {
             name: "MONA - Monacoin",
             segwitAvailable: true,
@@ -104225,6 +108186,38 @@ window.Entropy = new (function() {
                 setHdCoin(22);
             },
         },
+        {
+            name: "NAV - Navcoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.navcoin;
+                setHdCoin(130);
+            },
+        },
+        {
+            name: "NEBL - Neblio",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.neblio;
+                setHdCoin(146);
+            },
+        },
+        {
+            name: "NEOS - Neoscoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.neoscoin;
+                setHdCoin(25);
+            },
+        },
+        {
+            name: "NLG - Gulden",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.gulden;
+                setHdCoin(87);
+            },
+        },
         {
             name: "NMC - Namecoin",
             segwitAvailable: false,
@@ -104233,6 +108226,54 @@ window.Entropy = new (function() {
                 setHdCoin(7);
             },
         },
+        {
+            name: "NRO - Neurocoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.neurocoin;
+                setHdCoin(110);
+            },
+        },
+        {
+            name: "NSR - Nushares",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.nushares;
+                setHdCoin(11);
+            },
+        },
+        {
+            name: "NYC - Newyorkc",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.newyorkc;
+                setHdCoin(179);
+            },
+        },
+        {
+            name: "NVC - Novacoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.novacoin;
+                setHdCoin(50);
+            },
+        },
+        {
+            name: "OK - Okcash",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.okcash;
+                setHdCoin(69);
+            },
+        },
+        {
+            name: "OMNI - Omnicore",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.omnicore;
+                setHdCoin(200);
+            },
+        },
         {
             name: "ONX - Onixcoin",
             segwitAvailable: false,
@@ -104241,6 +108282,14 @@ window.Entropy = new (function() {
                 setHdCoin(174);
             },
         },
+        {
+            name: "PINK - Pinkcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.pinkcoin;
+                setHdCoin(117);
+            },
+        },
         {
             name: "PIVX - PIVX",
             segwitAvailable: false,
@@ -104257,6 +108306,22 @@ window.Entropy = new (function() {
                 setHdCoin(1);
             },
         },
+        {
+            name: "POSW - POSWcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.poswcoin;
+                setHdCoin(47);
+            },
+        },
+        {
+            name: "POT - Potcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.potcoin;
+                setHdCoin(81);
+            },
+        },
         {
             name: "PPC - Peercoin",
             segwitAvailable: false,
@@ -104265,6 +108330,46 @@ window.Entropy = new (function() {
                 setHdCoin(6);
             },
         },
+        {
+            name: "PSB - Pesobit",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.pesobit;
+                setHdCoin(62);
+            },
+        },
+        {
+            name: "PUT - Putincoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.putincoin;
+                setHdCoin(122);
+            },
+        },
+        {
+            name: "RBY - Rubycoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.rubycoin;
+                setHdCoin(16);
+            },
+        },
+        {
+            name: "RDD - Reddcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.reddoin;
+                setHdCoin(4);
+            },
+        },
+        {
+            name: "RVR - RevolutionVR",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.revolutionvr;
+                setHdCoin(129);
+            },
+        },
         {
             name: "SDC - ShadowCash",
             segwitAvailable: false,
@@ -104297,6 +108402,62 @@ window.Entropy = new (function() {
                 setHdCoin(111);
             },
         },
+        {
+            name: "SLR - Solarcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.solarcoin;
+                setHdCoin(58);
+            },
+        },
+        {
+            name: "SMLY - Smileycoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.smileycoin;
+                setHdCoin(59);
+            },
+        },
+        {
+            name: "STRAT - Stratis",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.stratis;
+                setHdCoin(105);
+            },
+        },
+        {
+            name: "SYS - Syscoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.syscoin;
+                setHdCoin(57);
+            },
+        },
+        {
+            name: "THC - Hempcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.hempcoin;
+                setHdCoin(113);
+            },
+        },
+        {
+            name: "TOA - Toa",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.toa;
+                setHdCoin(159);
+            },
+        },
+        {
+            name: "USC - Ultimatesecurecash",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.ultimatesecurecash;
+                setHdCoin(112);
+            },
+        },
         {
             name: "USNBT - NuBits",
             segwitAvailable: false,
@@ -104305,6 +108466,22 @@ window.Entropy = new (function() {
                 setHdCoin(12);
             },
         },
+        {
+            name: "UNO - Unobtanium",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.unobtanium;
+                setHdCoin(92);
+            },
+        },
+        {
+            name: "VASH - Vpncoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.vpncoin;
+                setHdCoin(33);
+            },
+        },
         {
             name: "VIA - Viacoin",
             segwitAvailable: false,
@@ -104321,6 +108498,38 @@ window.Entropy = new (function() {
                 setHdCoin(1);
             },
         },
+        {
+            name: "VIVO - Vivo",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.vivo;
+                setHdCoin(166);
+            },
+        },
+        {
+            name: "VTC - Vertcoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.vertcoin;
+                setHdCoin(28);
+            },
+        },
+        {
+            name: "WC - Wincoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.wincoin;
+                setHdCoin(181);
+            },
+        },
+        {
+            name: "XBC - Bitcoinplus",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.bitcoinplus;
+                setHdCoin(65);
+            },
+        },
         {
             name: "XMY - Myriadcoin",
             segwitAvailable: false,
@@ -104336,7 +108545,47 @@ window.Entropy = new (function() {
                 network = bitcoinjs.bitcoin.networks.bitcoin;
                 setHdCoin(144);
             },
-        }
+        },
+        {
+            name: "XVC - Vcash",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.vcash;
+                setHdCoin(127);
+            },
+        },
+        {
+            name: "XVG - Verge",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.verge;
+                setHdCoin(77);
+            },
+        },
+        {
+            name: "XWC - Whitecoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.whitecoin;
+                setHdCoin(155);
+            },
+        },
+        {
+            name: "XZC - Zcoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.zcoin;
+                setHdCoin(136);
+            },
+        },
+        {
+            name: "ZEC - Zcash",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.zcash;
+                setHdCoin(133);
+            },
+        },
     ]
 
     var clients = [