From b777ff554de2075015e7df0108e33808005b99e9 Mon Sep 17 00:00:00 2001 From: Ian Coleman Date: Mon, 19 Mar 2018 15:13:07 +1100 Subject: Update bitcoinjs-lib from 3.3.0 to 3.3.2 Built using instructions at https://github.com/bitcoinjs/bitcoinjs-lib/tree/v3.3.2#browser --- src/index.html | 2 +- src/js/bitcoinjs-3.3.0.js | 23935 -------------------------------------------- src/js/bitcoinjs-3.3.2.js | 15157 ++++++++++++++++++++++++++++ 3 files changed, 15158 insertions(+), 23936 deletions(-) delete mode 100644 src/js/bitcoinjs-3.3.0.js create mode 100644 src/js/bitcoinjs-3.3.2.js diff --git a/src/index.html b/src/index.html index dbdefc6..2ee79c0 100644 --- a/src/index.html +++ b/src/index.html @@ -887,7 +887,7 @@ - + diff --git a/src/js/bitcoinjs-3.3.0.js b/src/js/bitcoinjs-3.3.0.js deleted file mode 100644 index 3c20653..0000000 --- a/src/js/bitcoinjs-3.3.0.js +++ /dev/null @@ -1,23935 +0,0 @@ -(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.bitcoinjs = 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 - * @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/":33}],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, 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('') -} - -},{}],3:[function(require,module,exports){ - -},{}],4:[function(require,module,exports){ -(function (global){ -'use strict'; - -var buffer = require('buffer'); -var Buffer = buffer.Buffer; -var SlowBuffer = buffer.SlowBuffer; -var MAX_LEN = buffer.kMaxLength || 2147483647; -exports.alloc = function alloc(size, fill, encoding) { - if (typeof Buffer.alloc === 'function') { - return Buffer.alloc(size, fill, encoding); - } - if (typeof encoding === 'number') { - throw new TypeError('encoding must not be number'); - } - if (typeof size !== 'number') { - throw new TypeError('size must be a number'); - } - if (size > MAX_LEN) { - throw new RangeError('size is too large'); - } - var enc = encoding; - var _fill = fill; - if (_fill === undefined) { - enc = undefined; - _fill = 0; - } - var buf = new Buffer(size); - if (typeof _fill === 'string') { - var fillBuf = new Buffer(_fill, enc); - var flen = fillBuf.length; - var i = -1; - while (++i < size) { - buf[i] = fillBuf[i % flen]; - } - } else { - buf.fill(_fill); - } - return buf; -} -exports.allocUnsafe = function allocUnsafe(size) { - if (typeof Buffer.allocUnsafe === 'function') { - return Buffer.allocUnsafe(size); - } - if (typeof size !== 'number') { - throw new TypeError('size must be a number'); - } - if (size > MAX_LEN) { - throw new RangeError('size is too large'); - } - return new Buffer(size); -} -exports.from = function from(value, encodingOrOffset, length) { - if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) { - return Buffer.from(value, encodingOrOffset, length); - } - if (typeof value === 'number') { - throw new TypeError('"value" argument must not be a number'); - } - if (typeof value === 'string') { - return new Buffer(value, encodingOrOffset); - } - if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) { - var offset = encodingOrOffset; - if (arguments.length === 1) { - return new Buffer(value); - } - if (typeof offset === 'undefined') { - offset = 0; - } - var len = length; - if (typeof len === 'undefined') { - len = value.byteLength - offset; - } - if (offset >= value.byteLength) { - throw new RangeError('\'offset\' is out of bounds'); - } - if (len > value.byteLength - offset) { - throw new RangeError('\'length\' is out of bounds'); - } - return new Buffer(value.slice(offset, offset + len)); - } - if (Buffer.isBuffer(value)) { - var out = new Buffer(value.length); - value.copy(out, 0, 0, value.length); - return out; - } - if (value) { - if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) { - return new Buffer(value); - } - if (value.type === 'Buffer' && Array.isArray(value.data)) { - return new Buffer(value.data); - } - } - - throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.'); -} -exports.allocUnsafeSlow = function allocUnsafeSlow(size) { - if (typeof Buffer.allocUnsafeSlow === 'function') { - return Buffer.allocUnsafeSlow(size); - } - if (typeof size !== 'number') { - throw new TypeError('size must be a number'); - } - if (size >= MAX_LEN) { - throw new RangeError('size is too large'); - } - return new SlowBuffer(size); -} - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"buffer":5}],5:[function(require,module,exports){ -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @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 (value instanceof ArrayBuffer) { - 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) || string instanceof ArrayBuffer) { - 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.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 -} - -// 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":8}],6:[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":10}],7:[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; -}; - -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; - } - } - } - - 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 (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 true; -}; - -EventEmitter.prototype.addListener = function(type, listener) { - var m; - - 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 - // 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; -}; - -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 { - list.splice(position, 1); - } - - 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; -} - -},{}],8:[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) {} - - 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) -} - -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 - - value = Math.abs(value) - - 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 { - value += rt * Math.pow(2, 1 - eBias) - } - if (value * c >= 2) { - e++ - c /= 2 - } - - 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 { - m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) - e = 0 - } - } - - 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 -} - -},{}],9:[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 - } -} - -},{}],10:[function(require,module,exports){ -/*! - * Determine if an object is a Buffer - * - * @author Feross Aboukhadijeh - * @license MIT - */ - -// 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) -} - -function isBuffer (obj) { - return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) -} - -// 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)) -} - -},{}],11:[function(require,module,exports){ -var toString = {}.toString; - -module.exports = Array.isArray || function (arr) { - return toString.call(arr) == '[object Array]'; -}; - -},{}],12:[function(require,module,exports){ -(function (process){ -'use strict'; - -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; -} - -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); - }); - } -} - -}).call(this,require('_process')) -},{"_process":13}],13:[function(require,module,exports){ -// shim for using process in browser -var process = module.exports = {}; - -// 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. - -var cachedSetTimeout; -var cachedClearTimeout; - -function defaultSetTimout() { - throw new Error('setTimeout has not been defined'); -} -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); - } - } - - -} -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); - } - } - - - -} -var queue = []; -var draining = false; -var currentQueue; -var queueIndex = -1; - -function cleanUpNextTick() { - if (!draining || !currentQueue) { - return; - } - draining = false; - if (currentQueue.length) { - queue = currentQueue.concat(queue); - } else { - queueIndex = -1; - } - if (queue.length) { - drainQueue(); - } -} - -function drainQueue() { - if (draining) { - return; - } - var timeout = runTimeout(cleanUpNextTick); - draining = true; - - 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); -} - -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); - } -}; - -// 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 = {}; - -function noop() {} - -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; - -process.listeners = function (name) { return [] } - -process.binding = function (name) { - throw new Error('process.binding is not supported'); -}; - -process.cwd = function () { return '/' }; -process.chdir = function (dir) { - throw new Error('process.chdir is not supported'); -}; -process.umask = function() { return 0; }; - -},{}],14:[function(require,module,exports){ -module.exports = require('./lib/_stream_duplex.js'); - -},{"./lib/_stream_duplex.js":15}],15:[function(require,module,exports){ -// 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. - -'use strict'; - -/**/ - -var objectKeys = Object.keys || function (obj) { - var keys = []; - for (var key in obj) { - keys.push(key); - }return keys; -}; -/**/ - -module.exports = Duplex; - -/**/ -var processNextTick = require('process-nextick-args'); -/**/ - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -var Readable = require('./_stream_readable'); -var Writable = require('./_stream_writable'); - -util.inherits(Duplex, Readable); - -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]; -} - -function Duplex(options) { - if (!(this instanceof Duplex)) return new Duplex(options); - - Readable.call(this, options); - Writable.call(this, options); - - if (options && options.readable === false) this.readable = false; - - if (options && options.writable === false) this.writable = false; - - this.allowHalfOpen = true; - if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; - - this.once('end', onend); -} - -// 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; - - // no more data can be written. - // But allow more writes to happen in this tick. - processNextTick(onEndNT, this); -} - -function onEndNT(self) { - self.end(); -} - -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); - } -} -},{"./_stream_readable":17,"./_stream_writable":19,"core-util-is":6,"inherits":9,"process-nextick-args":12}],16:[function(require,module,exports){ -// a passthrough stream. -// basically just the most minimal sort of Transform stream. -// Every written chunk gets output as-is. - -'use strict'; - -module.exports = PassThrough; - -var Transform = require('./_stream_transform'); - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -util.inherits(PassThrough, Transform); - -function PassThrough(options) { - if (!(this instanceof PassThrough)) return new PassThrough(options); - - Transform.call(this, options); -} - -PassThrough.prototype._transform = function (chunk, encoding, cb) { - cb(null, chunk); -}; -},{"./_stream_transform":18,"core-util-is":6,"inherits":9}],17:[function(require,module,exports){ -(function (process){ -'use strict'; - -module.exports = Readable; - -/**/ -var processNextTick = require('process-nextick-args'); -/**/ - -/**/ -var isArray = require('isarray'); -/**/ - -/**/ -var Duplex; -/**/ - -Readable.ReadableState = ReadableState; - -/**/ -var EE = require('events').EventEmitter; - -var EElistenerCount = function (emitter, type) { - return emitter.listeners(type).length; -}; -/**/ - -/**/ -var Stream = require('./internal/streams/stream'); -/**/ - -var Buffer = require('buffer').Buffer; -/**/ -var bufferShim = require('buffer-shims'); -/**/ - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -/**/ -var debugUtil = require('util'); -var debug = void 0; -if (debugUtil && debugUtil.debuglog) { - debug = debugUtil.debuglog('stream'); -} else { - debug = function () {}; -} -/**/ - -var BufferList = require('./internal/streams/BufferList'); -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]]; - } -} - -function ReadableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); - - options = options || {}; - - // 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; - - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode; - - // 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; - - // cast to ints. - this.highWaterMark = ~~this.highWaterMark; - - // 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; - - // 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; - - // 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; - - // 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'; - - // when piping, we only care about 'readable' events that happen - // after read()ing all the bytes and not getting any pushback. - this.ranOut = false; - - // 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; - } -} - -function Readable(options) { - Duplex = Duplex || require('./_stream_duplex'); - - if (!(this instanceof Readable)) return new Readable(options); - - this._readableState = new ReadableState(options, this); - - // legacy - this.readable = true; - - if (options && typeof options.read === 'function') this._read = options.read; - - Stream.call(this); -} - -// 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; - - if (!state.objectMode && typeof chunk === 'string') { - encoding = encoding || state.defaultEncoding; - if (encoding !== state.encoding) { - chunk = bufferShim.from(chunk, encoding); - encoding = ''; - } - } - - return readableAddChunk(this, state, chunk, encoding, false); -}; - -// Unshift should *always* be something directly out of read() -Readable.prototype.unshift = function (chunk) { - var state = this._readableState; - return readableAddChunk(this, state, chunk, '', true); -}; - -Readable.prototype.isPaused = function () { - return this._readableState.flowing === false; -}; - -function readableAddChunk(stream, state, chunk, encoding, addToFront) { - var er = chunkInvalid(state, chunk); - if (er) { - stream.emit('error', er); - } else if (chunk === null) { - state.reading = false; - onEofChunk(stream, state); - } else if (state.objectMode || chunk && chunk.length > 0) { - if (state.ended && !addToFront) { - var e = new Error('stream.push() after EOF'); - stream.emit('error', e); - } else if (state.endEmitted && addToFront) { - var _e = new Error('stream.unshift() after end event'); - stream.emit('error', _e); - } else { - var skipAdd; - if (state.decoder && !addToFront && !encoding) { - chunk = state.decoder.write(chunk); - skipAdd = !state.objectMode && chunk.length === 0; - } - - if (!addToFront) state.reading = false; - - // Don't add to the buffer if we've decoded to an empty string chunk and - // we're not in object mode - if (!skipAdd) { - // if we want the data now, just emit it. - 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); - - if (state.needReadable) emitReadable(stream); - } - } - - maybeReadMore(stream, state); - } - } else if (!addToFront) { - state.reading = false; - } - - return needMoreData(state); -} - -// 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); -} - -// 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; -}; - -// 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; -} - -// 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; -} - -// 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; - - if (n !== 0) state.emittedReadable = false; - - // 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; - } - - n = howMuchToRead(n, state); - - // 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; - } - - // 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. - - // if we need a readable event, then we need to do some reading. - var doRead = state.needReadable; - debug('need readable', doRead); - - // 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); - } - - // 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); - } - - var ret; - if (n > 0) ret = fromList(n, state);else ret = null; - - if (ret === null) { - state.needReadable = true; - n = 0; - } else { - state.length -= n; - } - - 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; - - // If we tried to read() past the EOF, then emit end on the next tick. - if (nOrig !== n && state.ended) endReadable(this); - } - - if (ret !== null) this.emit('data', ret); - - return ret; -}; - -function chunkInvalid(state, chunk) { - var er = null; - if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - return er; -} - -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; - - // emit 'readable' now to make sure it gets picked up. - emitReadable(stream); -} - -// 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); - } -} - -function emitReadable_(stream) { - debug('emit readable'); - stream.emit('readable'); - flow(stream); -} - -// 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); - } -} - -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; -} - -// 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')); -}; - -Readable.prototype.pipe = function (dest, pipeOpts) { - var src = this; - var state = this._readableState; - - 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); - - var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; - - var endFn = doEnd ? onend : cleanup; - if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn); - - dest.on('unpipe', onunpipe); - function onunpipe(readable) { - debug('onunpipe'); - if (readable === src) { - cleanup(); - } - } - - function onend() { - debug('onend'); - dest.end(); - } - - // 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); - - 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', cleanup); - src.removeListener('data', ondata); - - cleanedUp = true; - - // 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(); - } - - // 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(); - } - } - - // 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); - } - - // Make sure our error handler is attached before userland ones. - prependListener(dest, 'error', onerror); - - // 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 unpipe() { - debug('unpipe'); - src.unpipe(dest); - } - - // tell the dest that it's being piped to - dest.emit('pipe', src); - - // start the flow if it hasn't been started already. - if (!state.flowing) { - debug('pipe resume'); - src.resume(); - } - - return dest; -}; - -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); - } - }; -} - -Readable.prototype.unpipe = function (dest) { - var state = this._readableState; - - // if we're not piping anywhere, then do nothing. - if (state.pipesCount === 0) return this; - - // 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; - - if (!dest) dest = state.pipes; - - // got a match. - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - if (dest) dest.emit('unpipe', this); - return this; - } - - // slow case. multiple pipe destinations. - - if (!dest) { - // remove all. - var dests = state.pipes; - var len = state.pipesCount; - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - - for (var i = 0; i < len; i++) { - dests[i].emit('unpipe', this); - }return this; - } - - // try to find the right one. - var index = indexOf(state.pipes, dest); - if (index === -1) return this; - - state.pipes.splice(index, 1); - state.pipesCount -= 1; - if (state.pipesCount === 1) state.pipes = state.pipes[0]; - - dest.emit('unpipe', this); - - return this; -}; - -// 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); - - 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, state); - } - } - } - - return res; -}; -Readable.prototype.addListener = Readable.prototype.on; - -function nReadingNextTick(self) { - debug('readable nexttick read 0'); - self.read(0); -} - -// 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 this; -}; - -function resume(stream, state) { - if (!state.resumeScheduled) { - state.resumeScheduled = true; - processNextTick(resume_, stream, state); - } -} - -function resume_(stream, state) { - if (!state.reading) { - debug('resume read 0'); - stream.read(0); - } - - state.resumeScheduled = false; - state.awaitDrain = 0; - stream.emit('resume'); - flow(stream); - if (state.flowing && !state.reading) stream.read(0); -} - -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 flow(stream) { - var state = stream._readableState; - debug('flow', state.flowing); - while (state.flowing && stream.read() !== null) {} -} - -// 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; - - 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); - } - - self.push(null); - }); - - stream.on('data', function (chunk) { - debug('wrapped data'); - if (state.decoder) chunk = state.decoder.write(chunk); - - // don't skip over falsy values in objectMode - if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; - - var ret = self.push(chunk); - if (!ret) { - paused = true; - stream.pause(); - } - }); - - // 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); - } - } - - // proxy certain important events. - for (var n = 0; n < kProxyEvents.length; n++) { - stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n])); - } - - // 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; -}; - -// exposed for testing purposes only. -Readable._fromList = fromList; - -// 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; - - 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); - } - - return ret; -} - -// 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; -} - -// 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; -} - -// 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 = bufferShim.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 endReadable(stream) { - var state = stream._readableState; - - // 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'); - - if (!state.endEmitted) { - state.ended = true; - processNextTick(endReadableNT, state, stream); - } -} - -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'); - } -} - -function forEach(xs, f) { - for (var i = 0, l = xs.length; i < l; i++) { - f(xs[i], i); - } -} - -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')) -},{"./_stream_duplex":15,"./internal/streams/BufferList":20,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"events":7,"inherits":9,"isarray":11,"process-nextick-args":12,"string_decoder/":22,"util":3}],18:[function(require,module,exports){ -// 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. - -'use strict'; - -module.exports = Transform; - -var Duplex = require('./_stream_duplex'); - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -util.inherits(Transform, Duplex); - -function TransformState(stream) { - this.afterTransform = function (er, data) { - return afterTransform(stream, er, data); - }; - - this.needTransform = false; - this.transforming = false; - this.writecb = null; - this.writechunk = null; - this.writeencoding = null; -} - -function afterTransform(stream, er, data) { - var ts = stream._transformState; - ts.transforming = false; - - var cb = ts.writecb; - - if (!cb) return stream.emit('error', new Error('no writecb in Transform class')); - - ts.writechunk = null; - ts.writecb = null; - - if (data !== null && data !== undefined) stream.push(data); - - cb(er); - - var rs = stream._readableState; - rs.reading = false; - if (rs.needReadable || rs.length < rs.highWaterMark) { - stream._read(rs.highWaterMark); - } -} - -function Transform(options) { - if (!(this instanceof Transform)) return new Transform(options); - - Duplex.call(this, options); - - this._transformState = new TransformState(this); - - var stream = this; - - // start out asking for a readable event once data is transformed. - this._readableState.needReadable = true; - - // 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; - - if (options) { - if (typeof options.transform === 'function') this._transform = options.transform; - - if (typeof options.flush === 'function') this._flush = options.flush; - } - - // 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); - }); -} - -Transform.prototype.push = function (chunk, encoding) { - this._transformState.needTransform = false; - return Duplex.prototype.push.call(this, chunk, encoding); -}; - -// 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'); -}; - -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); - } -}; - -// 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; - - 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; - } -}; - -function done(stream, er, data) { - if (er) return stream.emit('error', er); - - if (data !== null && data !== undefined) stream.push(data); - - // 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; - - if (ws.length) throw new Error('Calling transform done when ws.length != 0'); - - if (ts.transforming) throw new Error('Calling transform done when still transforming'); - - return stream.push(null); -} -},{"./_stream_duplex":15,"core-util-is":6,"inherits":9}],19:[function(require,module,exports){ -(function (process){ -// A bit simpler than readable streams. -// Implement an async ._write(chunk, encoding, cb), and it'll handle all -// the drain event emission and buffering. - -'use strict'; - -module.exports = Writable; - -/**/ -var processNextTick = require('process-nextick-args'); -/**/ - -/**/ -var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick; -/**/ - -/**/ -var Duplex; -/**/ - -Writable.WritableState = WritableState; - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -/**/ -var internalUtil = { - deprecate: require('util-deprecate') -}; -/**/ - -/**/ -var Stream = require('./internal/streams/stream'); -/**/ - -var Buffer = require('buffer').Buffer; -/**/ -var bufferShim = require('buffer-shims'); -/**/ - -util.inherits(Writable, Stream); - -function nop() {} - -function WriteReq(chunk, encoding, cb) { - this.chunk = chunk; - this.encoding = encoding; - this.callback = cb; - this.next = null; -} - -function WritableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); - - options = options || {}; - - // object stream flag to indicate whether or not this stream - // contains buffers or objects. - this.objectMode = !!options.objectMode; - - if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode; - - // 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; - - // cast to ints. - this.highWaterMark = ~~this.highWaterMark; - - // 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; - - // 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; - - // 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'; - - // 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; - - // a flag to see when we're in the middle of a write. - this.writing = false; - - // when true all writes will be buffered until .uncork() call - this.corked = 0; - - // 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; - - // 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; - - // the callback that's passed to _write(chunk,cb) - this.onwrite = function (er) { - onwrite(stream, er); - }; - - // the callback that the user supplies to write(chunk,encoding,cb) - this.writecb = null; - - // the amount that is being written when _write is called. - this.writelen = 0; - - this.bufferedRequest = null; - this.lastBufferedRequest = null; - - // number of pending user-supplied write callbacks - // this must be 0 before 'finish' can be emitted - this.pendingcb = 0; - - // emit prefinish if the only thing we're waiting for is _write cbs - // This is relevant for synchronous Transform streams - this.prefinished = false; - - // True if the error was already emitted and should not be thrown again - this.errorEmitted = false; - - // count buffered requests - this.bufferedRequestCount = 0; - - // allocate the first CorkedRequest, there is always - // one allocated and free to use, and we maintain at most two - this.corkedRequestsFree = new CorkedRequest(this); -} - -WritableState.prototype.getBuffer = function getBuffer() { - var current = this.bufferedRequest; - var out = []; - while (current) { - out.push(current); - current = current.next; - } - return out; -}; - -(function () { - try { - Object.defineProperty(WritableState.prototype, 'buffer', { - get: internalUtil.deprecate(function () { - return this.getBuffer(); - }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.') - }); - } catch (_) {} -})(); - -// 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; - - return object && object._writableState instanceof WritableState; - } - }); -} else { - realHasInstance = function (object) { - return object instanceof this; - }; -} - -function Writable(options) { - Duplex = Duplex || require('./_stream_duplex'); - - // 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); - } - - this._writableState = new WritableState(options, this); - - // legacy. - this.writable = true; - - if (options) { - if (typeof options.write === 'function') this._write = options.write; - - if (typeof options.writev === 'function') this._writev = options.writev; - } - - Stream.call(this); -} - -// Otherwise people can pipe Writable streams, which is just wrong. -Writable.prototype.pipe = function () { - this.emit('error', new Error('Cannot pipe, not readable')); -}; - -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); -} - -// 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; - - 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'); - } - if (er) { - stream.emit('error', er); - processNextTick(cb, er); - valid = false; - } - return valid; -} - -Writable.prototype.write = function (chunk, encoding, cb) { - var state = this._writableState; - var ret = false; - var isBuf = Buffer.isBuffer(chunk); - - if (typeof encoding === 'function') { - cb = encoding; - encoding = null; - } - - if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; - - if (typeof cb !== 'function') cb = nop; - - if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { - state.pendingcb++; - ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); - } - - return ret; -}; - -Writable.prototype.cork = function () { - var state = this._writableState; - - state.corked++; -}; - -Writable.prototype.uncork = function () { - var state = this._writableState; - - if (state.corked) { - state.corked--; - - if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); - } -}; - -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; -}; - -function decodeChunk(state, chunk, encoding) { - if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { - chunk = bufferShim.from(chunk, encoding); - } - return chunk; -} - -// 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) { - chunk = decodeChunk(state, chunk, encoding); - if (Buffer.isBuffer(chunk)) encoding = 'buffer'; - } - var len = state.objectMode ? 1 : chunk.length; - - state.length += len; - - var ret = state.length < state.highWaterMark; - // we must ensure that previous needDrain will not be reset to false. - if (!ret) state.needDrain = true; - - if (state.writing || state.corked) { - var last = state.lastBufferedRequest; - state.lastBufferedRequest = new WriteReq(chunk, encoding, cb); - if (last) { - last.next = state.lastBufferedRequest; - } else { - state.bufferedRequest = state.lastBufferedRequest; - } - state.bufferedRequestCount += 1; - } else { - doWrite(stream, state, false, len, chunk, encoding, cb); - } - - return ret; -} - -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; -} - -function onwriteError(stream, state, sync, er, cb) { - --state.pendingcb; - if (sync) processNextTick(cb, er);else cb(er); - - stream._writableState.errorEmitted = true; - stream.emit('error', er); -} - -function onwriteStateUpdate(state) { - state.writing = false; - state.writecb = null; - state.length -= state.writelen; - state.writelen = 0; -} - -function onwrite(stream, er) { - var state = stream._writableState; - var sync = state.sync; - var cb = state.writecb; - - onwriteStateUpdate(state); - - 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) { - /**/ - asyncWrite(afterWrite, stream, state, finished, cb); - /**/ - } else { - afterWrite(stream, state, finished, cb); - } - } -} - -function afterWrite(stream, state, finished, cb) { - if (!finished) onwriteDrain(stream, state); - state.pendingcb--; - cb(); - finishMaybe(stream, state); -} - -// 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'); - } -} - -// if there's something in the buffer waiting, then process it -function clearBuffer(stream, state) { - state.bufferProcessing = true; - var entry = state.bufferedRequest; - - 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 count = 0; - while (entry) { - buffer[count] = entry; - entry = entry.next; - count += 1; - } - - doWrite(stream, state, true, state.length, buffer, '', holder.finish); - - // 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; - - 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; - } - } - - if (entry === null) state.lastBufferedRequest = null; - } - - state.bufferedRequestCount = 0; - state.bufferedRequest = entry; - state.bufferProcessing = false; -} - -Writable.prototype._write = function (chunk, encoding, cb) { - cb(new Error('_write() is not implemented')); -}; - -Writable.prototype._writev = null; - -Writable.prototype.end = function (chunk, encoding, cb) { - var state = this._writableState; - - if (typeof chunk === 'function') { - cb = chunk; - chunk = null; - encoding = null; - } else if (typeof encoding === 'function') { - cb = encoding; - encoding = null; - } - - if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); - - // .end() fully uncorks - if (state.corked) { - state.corked = 1; - this.uncork(); - } - - // ignore unnecessary end() calls. - if (!state.ending && !state.finished) endWritable(this, state, cb); -}; - -function needFinish(state) { - return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; -} - -function prefinish(stream, state) { - if (!state.prefinished) { - state.prefinished = true; - stream.emit('prefinish'); - } -} - -function finishMaybe(stream, state) { - var need = needFinish(state); - if (need) { - if (state.pendingcb === 0) { - prefinish(stream, state); - state.finished = true; - stream.emit('finish'); - } else { - prefinish(stream, state); - } - } - return need; -} - -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; -} - -// 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; - - this.next = null; - this.entry = null; - this.finish = function (err) { - var entry = _this.entry; - _this.entry = null; - while (entry) { - var cb = entry.callback; - state.pendingcb--; - cb(err); - entry = entry.next; - } - if (state.corkedRequestsFree) { - state.corkedRequestsFree.next = _this; - } else { - state.corkedRequestsFree = _this; - } - }; -} -}).call(this,require('_process')) -},{"./_stream_duplex":15,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"inherits":9,"process-nextick-args":12,"util-deprecate":30}],20:[function(require,module,exports){ -'use strict'; - -var Buffer = require('buffer').Buffer; -/**/ -var bufferShim = require('buffer-shims'); -/**/ - -module.exports = BufferList; - -function BufferList() { - this.head = null; - this.tail = null; - this.length = 0; -} - -BufferList.prototype.push = function (v) { - var entry = { data: v, next: null }; - if (this.length > 0) this.tail.next = entry;else this.head = entry; - this.tail = entry; - ++this.length; -}; - -BufferList.prototype.unshift = function (v) { - var entry = { data: v, next: this.head }; - if (this.length === 0) this.tail = entry; - this.head = entry; - ++this.length; -}; - -BufferList.prototype.shift = function () { - 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; -}; - -BufferList.prototype.clear = function () { - this.head = this.tail = null; - this.length = 0; -}; - -BufferList.prototype.join = function (s) { - if (this.length === 0) return ''; - var p = this.head; - var ret = '' + p.data; - while (p = p.next) { - ret += s + p.data; - }return ret; -}; - -BufferList.prototype.concat = function (n) { - if (this.length === 0) return bufferShim.alloc(0); - if (this.length === 1) return this.head.data; - var ret = bufferShim.allocUnsafe(n >>> 0); - var p = this.head; - var i = 0; - while (p) { - p.data.copy(ret, i); - i += p.data.length; - p = p.next; - } - return ret; -}; -},{"buffer":5,"buffer-shims":4}],21:[function(require,module,exports){ -module.exports = require('events').EventEmitter; - -},{"events":7}],22:[function(require,module,exports){ -'use strict'; - -var Buffer = require('safe-buffer').Buffer; - -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; - } -}; - -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; - } - } -}; - -// 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; -} - -// 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); -} - -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 || ''; -}; - -StringDecoder.prototype.end = utf8End; - -// Returns only complete characters in a Buffer -StringDecoder.prototype.text = utf8Text; - -// 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; -}; - -// 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; -} - -// 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; -} - -// 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); - } - } - } -} - -// 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; -} - -// 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); -} - -// 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; -} - -// 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); -} - -// 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); - } - return r; -} - -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); -} - -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; -} - -// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) -function simpleWrite(buf) { - return buf.toString(this.encoding); -} - -function simpleEnd(buf) { - return buf && buf.length ? this.write(buf) : ''; -} -},{"safe-buffer":27}],23:[function(require,module,exports){ -module.exports = require('./readable').PassThrough - -},{"./readable":24}],24:[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'); - -},{"./lib/_stream_duplex.js":15,"./lib/_stream_passthrough.js":16,"./lib/_stream_readable.js":17,"./lib/_stream_transform.js":18,"./lib/_stream_writable.js":19}],25:[function(require,module,exports){ -module.exports = require('./readable').Transform - -},{"./readable":24}],26:[function(require,module,exports){ -module.exports = require('./lib/_stream_writable.js'); - -},{"./lib/_stream_writable.js":19}],27:[function(require,module,exports){ -module.exports = require('buffer') - -},{"buffer":5}],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. - -module.exports = Stream; - -var EE = require('events').EventEmitter; -var inherits = require('inherits'); - -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'); - -// Backwards-compat with node 0.4.x -Stream.Stream = Stream; - - - -// old-style streams. Note that the pipe method (the only relevant -// part of this class) is overridden in the Readable class. - -function Stream() { - EE.call(this); -} - -Stream.prototype.pipe = function(dest, options) { - var source = this; - - function ondata(chunk) { - if (dest.writable) { - if (false === dest.write(chunk) && source.pause) { - source.pause(); - } - } - } - - source.on('data', ondata); - - function ondrain() { - if (source.readable && source.resume) { - source.resume(); - } - } - - dest.on('drain', ondrain); - - // 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); - } - - var didOnEnd = false; - function onend() { - if (didOnEnd) return; - didOnEnd = true; - - dest.end(); - } - - - function onclose() { - if (didOnEnd) return; - didOnEnd = true; - - if (typeof dest.destroy === 'function') dest.destroy(); - } - - // 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. - } - } - - source.on('error', onerror); - dest.on('error', onerror); - - // remove all the event listeners that were added. - function cleanup() { - source.removeListener('data', ondata); - dest.removeListener('drain', ondrain); - - source.removeListener('end', onend); - source.removeListener('close', onclose); - - source.removeListener('error', onerror); - dest.removeListener('error', onerror); - - source.removeListener('end', cleanup); - source.removeListener('close', cleanup); - - dest.removeListener('close', cleanup); - } - - source.on('end', cleanup); - source.on('close', cleanup); - - dest.on('close', cleanup); - - dest.emit('pipe', source); - - // Allow for unix-like usage: A.pipe(B).pipe(C) - return dest; -}; - -},{"events":7,"inherits":9,"readable-stream/duplex.js":14,"readable-stream/passthrough.js":23,"readable-stream/readable.js":24,"readable-stream/transform.js":25,"readable-stream/writable.js":26}],29:[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 Buffer = require('buffer').Buffer; - -var isBufferEncoding = Buffer.isEncoding - || function(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; - } - } - - -function assertEncoding(encoding) { - if (encoding && !isBufferEncoding(encoding)) { - throw new Error('Unknown encoding: ' + encoding); - } -} - -// StringDecoder provides an interface for efficiently splitting a series of -// buffers into a series of JS strings without breaking apart multi-byte -// characters. CESU-8 is handled as part of the UTF-8 encoding. -// -// @TODO Handling all encodings inside a single object makes it very difficult -// to reason about this code, so it should be split up in the future. -// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code -// points as used by CESU-8. -var StringDecoder = exports.StringDecoder = function(encoding) { - this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, ''); - assertEncoding(encoding); - switch (this.encoding) { - case 'utf8': - // CESU-8 represents each of Surrogate Pair by 3-bytes - this.surrogateSize = 3; - break; - case 'ucs2': - case 'utf16le': - // UTF-16 represents each of Surrogate Pair by 2-bytes - this.surrogateSize = 2; - this.detectIncompleteChar = utf16DetectIncompleteChar; - break; - case 'base64': - // Base-64 stores 3 bytes in 4 chars, and pads the remainder. - this.surrogateSize = 3; - this.detectIncompleteChar = base64DetectIncompleteChar; - break; - default: - this.write = passThroughWrite; - return; - } - - // Enough space to store all bytes of a single character. UTF-8 needs 4 - // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate). - this.charBuffer = new Buffer(6); - // Number of bytes received for the current incomplete multi-byte character. - this.charReceived = 0; - // Number of bytes expected for the current incomplete multi-byte character. - this.charLength = 0; -}; - - -// write decodes the given buffer and returns it as JS string that is -// guaranteed to not contain any partial multi-byte characters. Any partial -// character found at the end of the buffer is buffered up, and will be -// returned when calling write again with the remaining bytes. -// -// Note: Converting a Buffer containing an orphan surrogate to a String -// currently works, but converting a String to a Buffer (via `new Buffer`, or -// Buffer#write) will replace incomplete surrogates with the unicode -// replacement character. See https://codereview.chromium.org/121173009/ . -StringDecoder.prototype.write = function(buffer) { - var charStr = ''; - // if our last write ended with an incomplete multibyte character - while (this.charLength) { - // determine how many remaining bytes this buffer has to offer for this char - var available = (buffer.length >= this.charLength - this.charReceived) ? - this.charLength - this.charReceived : - buffer.length; - - // add the new bytes to the char buffer - buffer.copy(this.charBuffer, this.charReceived, 0, available); - this.charReceived += available; - - if (this.charReceived < this.charLength) { - // still not enough chars in this buffer? wait for more ... - return ''; - } - - // remove bytes belonging to the current character from the buffer - buffer = buffer.slice(available, buffer.length); - - // get the character that was split - charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding); - - // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character - var charCode = charStr.charCodeAt(charStr.length - 1); - if (charCode >= 0xD800 && charCode <= 0xDBFF) { - this.charLength += this.surrogateSize; - charStr = ''; - continue; - } - this.charReceived = this.charLength = 0; - - // if there are no more bytes in this buffer, just emit our char - if (buffer.length === 0) { - return charStr; - } - break; - } - - // determine and set charLength / charReceived - this.detectIncompleteChar(buffer); - - var end = buffer.length; - if (this.charLength) { - // buffer the incomplete character bytes we got - buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end); - end -= this.charReceived; - } - - charStr += buffer.toString(this.encoding, 0, end); - - var end = charStr.length - 1; - var charCode = charStr.charCodeAt(end); - // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character - if (charCode >= 0xD800 && charCode <= 0xDBFF) { - var size = this.surrogateSize; - this.charLength += size; - this.charReceived += size; - this.charBuffer.copy(this.charBuffer, size, 0, size); - buffer.copy(this.charBuffer, 0, 0, size); - return charStr.substring(0, end); - } - - // or just emit the charStr - return charStr; -}; - -// detectIncompleteChar determines if there is an incomplete UTF-8 character at -// the end of the given buffer. If so, it sets this.charLength to the byte -// length that character, and sets this.charReceived to the number of bytes -// that are available for this character. -StringDecoder.prototype.detectIncompleteChar = function(buffer) { - // determine how many bytes we have to check at the end of this buffer - var i = (buffer.length >= 3) ? 3 : buffer.length; - - // Figure out if one of the last i bytes of our buffer announces an - // incomplete char. - for (; i > 0; i--) { - var c = buffer[buffer.length - i]; - - // See http://en.wikipedia.org/wiki/UTF-8#Description - - // 110XXXXX - if (i == 1 && c >> 5 == 0x06) { - this.charLength = 2; - break; - } - - // 1110XXXX - if (i <= 2 && c >> 4 == 0x0E) { - this.charLength = 3; - break; - } - - // 11110XXX - if (i <= 3 && c >> 3 == 0x1E) { - this.charLength = 4; - break; - } - } - this.charReceived = i; -}; - -StringDecoder.prototype.end = function(buffer) { - var res = ''; - if (buffer && buffer.length) - res = this.write(buffer); - - if (this.charReceived) { - var cr = this.charReceived; - var buf = this.charBuffer; - var enc = this.encoding; - res += buf.slice(0, cr).toString(enc); - } - - return res; -}; - -function passThroughWrite(buffer) { - return buffer.toString(this.encoding); -} - -function utf16DetectIncompleteChar(buffer) { - this.charReceived = buffer.length % 2; - this.charLength = this.charReceived ? 2 : 0; -} - -function base64DetectIncompleteChar(buffer) { - this.charReceived = buffer.length % 3; - this.charLength = this.charReceived ? 3 : 0; -} - -},{"buffer":5}],30:[function(require,module,exports){ -(function (global){ - -/** - * Module exports. - */ - -module.exports = deprecate; - -/** - * 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 - */ - -function deprecate (fn, msg) { - if (config('noDeprecation')) { - return fn; - } - - 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 deprecated; -} - -/** - * Checks `localStorage` for boolean values for the given `name`. - * - * @param {String} name - * @returns {Boolean} - * @api private - */ - -function config (name) { - // accessing global.localStorage can trigger a DOMException in sandboxed iframes - try { - if (!global.localStorage) return false; - } catch (_) { - return false; - } - var val = global.localStorage[name]; - if (null == val) return false; - return String(val).toLowerCase() === 'true'; -} - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],31:[function(require,module,exports){ -arguments[4][9][0].apply(exports,arguments) -},{"dup":9}],32:[function(require,module,exports){ -module.exports = function isBuffer(arg) { - return arg && typeof arg === 'object' - && typeof arg.copy === 'function' - && typeof arg.fill === 'function' - && typeof arg.readUInt8 === 'function'; -} -},{}],33:[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. - -var formatRegExp = /%[sdj%]/g; -exports.format = function(f) { - if (!isString(f)) { - var objects = []; - for (var i = 0; i < arguments.length; i++) { - objects.push(inspect(arguments[i])); - } - return objects.join(' '); - } - - var i = 1; - var args = arguments; - var len = args.length; - var str = String(f).replace(formatRegExp, function(x) { - if (x === '%%') return '%'; - if (i >= len) return x; - switch (x) { - case '%s': return String(args[i++]); - case '%d': return Number(args[i++]); - case '%j': - try { - return JSON.stringify(args[i++]); - } catch (_) { - return '[Circular]'; - } - default: - return x; - } - }); - for (var x = args[i]; i < len; x = args[++i]) { - if (isNull(x) || !isObject(x)) { - str += ' ' + x; - } else { - str += ' ' + inspect(x); - } - } - return str; -}; - - -// Mark that a method should not be used. -// Returns a modified function which warns once by default. -// If --no-deprecation is set, then it is a no-op. -exports.deprecate = function(fn, msg) { - // Allow for deprecating things in the process of starting up. - if (isUndefined(global.process)) { - return function() { - return exports.deprecate(fn, msg).apply(this, arguments); - }; - } - - if (process.noDeprecation === true) { - return fn; - } - - var warned = false; - function deprecated() { - if (!warned) { - if (process.throwDeprecation) { - throw new Error(msg); - } else if (process.traceDeprecation) { - console.trace(msg); - } else { - console.error(msg); - } - warned = true; - } - return fn.apply(this, arguments); - } - - return deprecated; -}; - - -var debugs = {}; -var debugEnviron; -exports.debuglog = function(set) { - if (isUndefined(debugEnviron)) - debugEnviron = process.env.NODE_DEBUG || ''; - set = set.toUpperCase(); - if (!debugs[set]) { - if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { - var pid = process.pid; - debugs[set] = function() { - var msg = exports.format.apply(exports, arguments); - console.error('%s %d: %s', set, pid, msg); - }; - } else { - debugs[set] = function() {}; - } - } - return debugs[set]; -}; - - -/** - * Echos the value of a value. Trys to print the value out - * in the best way possible given the different types. - * - * @param {Object} obj The object to print out. - * @param {Object} opts Optional options object that alters the output. - */ -/* legacy: obj, showHidden, depth, colors*/ -function inspect(obj, opts) { - // default options - var ctx = { - seen: [], - stylize: stylizeNoColor - }; - // legacy... - if (arguments.length >= 3) ctx.depth = arguments[2]; - if (arguments.length >= 4) ctx.colors = arguments[3]; - if (isBoolean(opts)) { - // legacy... - ctx.showHidden = opts; - } else if (opts) { - // got an "options" object - exports._extend(ctx, opts); - } - // set default options - if (isUndefined(ctx.showHidden)) ctx.showHidden = false; - if (isUndefined(ctx.depth)) ctx.depth = 2; - if (isUndefined(ctx.colors)) ctx.colors = false; - if (isUndefined(ctx.customInspect)) ctx.customInspect = true; - if (ctx.colors) ctx.stylize = stylizeWithColor; - return formatValue(ctx, obj, ctx.depth); -} -exports.inspect = inspect; - - -// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics -inspect.colors = { - 'bold' : [1, 22], - 'italic' : [3, 23], - 'underline' : [4, 24], - 'inverse' : [7, 27], - 'white' : [37, 39], - 'grey' : [90, 39], - 'black' : [30, 39], - 'blue' : [34, 39], - 'cyan' : [36, 39], - 'green' : [32, 39], - 'magenta' : [35, 39], - 'red' : [31, 39], - 'yellow' : [33, 39] -}; - -// Don't use 'blue' not visible on cmd.exe -inspect.styles = { - 'special': 'cyan', - 'number': 'yellow', - 'boolean': 'yellow', - 'undefined': 'grey', - 'null': 'bold', - 'string': 'green', - 'date': 'magenta', - // "name": intentionally not styling - 'regexp': 'red' -}; - - -function stylizeWithColor(str, styleType) { - var style = inspect.styles[styleType]; - - if (style) { - return '\u001b[' + inspect.colors[style][0] + 'm' + str + - '\u001b[' + inspect.colors[style][1] + 'm'; - } else { - return str; - } -} - - -function stylizeNoColor(str, styleType) { - return str; -} - - -function arrayToHash(array) { - var hash = {}; - - array.forEach(function(val, idx) { - hash[val] = true; - }); - - return hash; -} - - -function formatValue(ctx, value, recurseTimes) { - // Provide a hook for user-specified inspect functions. - // Check that value is an object with an inspect function on it - if (ctx.customInspect && - value && - isFunction(value.inspect) && - // Filter out the util module, it's inspect function is special - value.inspect !== exports.inspect && - // Also filter out any prototype objects using the circular check. - !(value.constructor && value.constructor.prototype === value)) { - var ret = value.inspect(recurseTimes, ctx); - if (!isString(ret)) { - ret = formatValue(ctx, ret, recurseTimes); - } - return ret; - } - - // Primitive types cannot have properties - var primitive = formatPrimitive(ctx, value); - if (primitive) { - return primitive; - } - - // Look up the keys of the object. - var keys = Object.keys(value); - var visibleKeys = arrayToHash(keys); - - if (ctx.showHidden) { - keys = Object.getOwnPropertyNames(value); - } - - // IE doesn't make error fields non-enumerable - // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx - if (isError(value) - && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { - return formatError(value); - } - - // Some type of object without properties can be shortcutted. - if (keys.length === 0) { - if (isFunction(value)) { - var name = value.name ? ': ' + value.name : ''; - return ctx.stylize('[Function' + name + ']', 'special'); - } - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } - if (isDate(value)) { - return ctx.stylize(Date.prototype.toString.call(value), 'date'); - } - if (isError(value)) { - return formatError(value); - } - } - - var base = '', array = false, braces = ['{', '}']; - - // Make Array say that they are Array - if (isArray(value)) { - array = true; - braces = ['[', ']']; - } - - // Make functions say that they are functions - if (isFunction(value)) { - var n = value.name ? ': ' + value.name : ''; - base = ' [Function' + n + ']'; - } - - // Make RegExps say that they are RegExps - if (isRegExp(value)) { - base = ' ' + RegExp.prototype.toString.call(value); - } - - // Make dates with properties first say the date - if (isDate(value)) { - base = ' ' + Date.prototype.toUTCString.call(value); - } - - // Make error with message first say the error - if (isError(value)) { - base = ' ' + formatError(value); - } - - if (keys.length === 0 && (!array || value.length == 0)) { - return braces[0] + base + braces[1]; - } - - if (recurseTimes < 0) { - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } else { - return ctx.stylize('[Object]', 'special'); - } - } - - ctx.seen.push(value); - - var output; - if (array) { - output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); - } else { - output = keys.map(function(key) { - return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); - }); - } - - ctx.seen.pop(); - - return reduceToSingleString(output, base, braces); -} - - -function formatPrimitive(ctx, value) { - if (isUndefined(value)) - return ctx.stylize('undefined', 'undefined'); - if (isString(value)) { - var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') - .replace(/'/g, "\\'") - .replace(/\\"/g, '"') + '\''; - return ctx.stylize(simple, 'string'); - } - if (isNumber(value)) - return ctx.stylize('' + value, 'number'); - if (isBoolean(value)) - return ctx.stylize('' + value, 'boolean'); - // For some reason typeof null is "object", so special case here. - if (isNull(value)) - return ctx.stylize('null', 'null'); -} - - -function formatError(value) { - return '[' + Error.prototype.toString.call(value) + ']'; -} - - -function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { - var output = []; - for (var i = 0, l = value.length; i < l; ++i) { - if (hasOwnProperty(value, String(i))) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - String(i), true)); - } else { - output.push(''); - } - } - keys.forEach(function(key) { - if (!key.match(/^\d+$/)) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - key, true)); - } - }); - return output; -} - - -function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { - var name, str, desc; - desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; - if (desc.get) { - if (desc.set) { - str = ctx.stylize('[Getter/Setter]', 'special'); - } else { - str = ctx.stylize('[Getter]', 'special'); - } - } else { - if (desc.set) { - str = ctx.stylize('[Setter]', 'special'); - } - } - if (!hasOwnProperty(visibleKeys, key)) { - name = '[' + key + ']'; - } - if (!str) { - if (ctx.seen.indexOf(desc.value) < 0) { - if (isNull(recurseTimes)) { - str = formatValue(ctx, desc.value, null); - } else { - str = formatValue(ctx, desc.value, recurseTimes - 1); - } - if (str.indexOf('\n') > -1) { - if (array) { - str = str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n').substr(2); - } else { - str = '\n' + str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n'); - } - } - } else { - str = ctx.stylize('[Circular]', 'special'); - } - } - if (isUndefined(name)) { - if (array && key.match(/^\d+$/)) { - return str; - } - name = JSON.stringify('' + key); - if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { - name = name.substr(1, name.length - 2); - name = ctx.stylize(name, 'name'); - } else { - name = name.replace(/'/g, "\\'") - .replace(/\\"/g, '"') - .replace(/(^"|"$)/g, "'"); - name = ctx.stylize(name, 'string'); - } - } - - return name + ': ' + str; -} - - -function reduceToSingleString(output, base, braces) { - var numLinesEst = 0; - var length = output.reduce(function(prev, cur) { - numLinesEst++; - if (cur.indexOf('\n') >= 0) numLinesEst++; - return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; - }, 0); - - if (length > 60) { - return braces[0] + - (base === '' ? '' : base + '\n ') + - ' ' + - output.join(',\n ') + - ' ' + - braces[1]; - } - - return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; -} - - -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. -function isArray(ar) { - return Array.isArray(ar); -} -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 isObject(re) && objectToString(re) === '[object RegExp]'; -} -exports.isRegExp = isRegExp; - -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; - -function isDate(d) { - return isObject(d) && objectToString(d) === '[object Date]'; -} -exports.isDate = isDate; - -function isError(e) { - return isObject(e) && - (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 = require('./support/isBuffer'); - -function objectToString(o) { - return Object.prototype.toString.call(o); -} - - -function pad(n) { - return n < 10 ? '0' + n.toString(10) : n.toString(10); -} - - -var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', - 'Oct', 'Nov', 'Dec']; - -// 26 Feb 16:19:34 -function timestamp() { - var d = new Date(); - var time = [pad(d.getHours()), - pad(d.getMinutes()), - pad(d.getSeconds())].join(':'); - return [d.getDate(), months[d.getMonth()], time].join(' '); -} - - -// log is just a thin wrapper to console.log that prepends a timestamp -exports.log = function() { - console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); -}; - - -/** - * Inherit the prototype methods from one constructor into another. - * - * The Function.prototype.inherits from lang.js rewritten as a standalone - * function (not on Function.prototype). NOTE: If this file is to be loaded - * during bootstrapping this function needs to be rewritten using some native - * functions as prototype setup using normal JavaScript does not work as - * expected during bootstrapping (see mirror.js in r114903). - * - * @param {function} ctor Constructor function which needs to inherit the - * prototype. - * @param {function} superCtor Constructor function to inherit prototype from. - */ -exports.inherits = require('inherits'); - -exports._extend = function(origin, add) { - // Don't do anything if add isn't an object - if (!add || !isObject(add)) return origin; - - var keys = Object.keys(add); - var i = keys.length; - while (i--) { - origin[keys[i]] = add[keys[i]]; - } - return origin; -}; - -function hasOwnProperty(obj, prop) { - return Object.prototype.hasOwnProperty.call(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'), -} - -module.exports = bitcoin; - -},{"bigi":39,"bitcoinjs-lib":52,"bs58":83,"bs58check":85,"buffer":5,"ecurve":94,"elliptic":97}],35:[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 += ALPHABET[0] - // convert digits to a string - for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]] - - return string - } - - function decodeUnsafe (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":128}],36:[function(require,module,exports){ -'use strict' -let ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l' - -// pre-compute lookup table -let ALPHABET_MAP = {} -for (let z = 0; z < ALPHABET.length; z++) { - let 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 - return ((pre & 0x1FFFFFF) << 5) ^ - (-((b >> 0) & 1) & 0x3b6a57b2) ^ - (-((b >> 1) & 1) & 0x26508e6d) ^ - (-((b >> 2) & 1) & 0x1ea119fa) ^ - (-((b >> 3) & 1) & 0x3d4233dd) ^ - (-((b >> 4) & 1) & 0x2a1462b3) -} - -function prefixChk (prefix) { - let chk = 1 - for (let i = 0; i < prefix.length; ++i) { - let 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) - 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') - 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] - 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) { - chk = polymodStep(chk) - } - chk ^= 1 - - for (let i = 0; i < 6; ++i) { - let v = (chk >> ((5 - i) * 5)) & 0x1f - result += ALPHABET.charAt(v) - } - - return result -} - -function decode (str) { - if (str.length < 8) throw new TypeError(str + ' too short') - if (str.length > 90) throw new TypeError(str + ' too long') - - // don't allow mixed case - let lowered = str.toLowerCase() - let uppered = str.toUpperCase() - if (str !== lowered && str !== uppered) throw new Error('Mixed-case string ' + str) - str = lowered - - let split = str.lastIndexOf('1') - if (split === 0) throw new Error('Missing prefix for ' + str) - - let prefix = str.slice(0, split) - let 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] - if (v === undefined) throw new Error('Unknown character ' + c) - chk = polymodStep(chk) ^ v - - // not in the checksum? - if (i + 6 >= wordChars.length) continue - words.push(v) - } - - if (chk !== 1) throw new Error('Invalid checksum for ' + str) - return { prefix, words } -} - -function convert (data, inBits, outBits, pad) { - let value = 0 - let bits = 0 - let maxV = (1 << outBits) - 1 - - let result = [] - for (let i = 0; i < data.length; ++i) { - value = (value << inBits) | data[i] - bits += inBits - - while (bits >= outBits) { - bits -= outBits - result.push((value >> bits) & maxV) - } - } - - if (pad) { - if (bits > 0) { - result.push((value << (outBits - bits)) & maxV) - } - } else { - if (bits >= inBits) throw new Error('Excess padding') - if ((value << (outBits - bits)) & maxV) throw new Error('Non-zero padding') - } - - return result -} - -function toWords (bytes) { - return convert(bytes, 8, 5, true) -} - -function fromWords (words) { - return convert(words, 5, 8, false) -} - -module.exports = { decode, encode, toWords, fromWords } - -},{}],37:[function(require,module,exports){ -// (public) Constructor -function BigInteger(a, b, c) { - if (!(this instanceof BigInteger)) - return new BigInteger(a, b, c) - - if (a != null) { - if ("number" == typeof a) this.fromNumber(a, b, c) - else if (b == null && "string" != typeof a) this.fromString(a, 256) - else this.fromString(a, b) - } -} - -var proto = BigInteger.prototype - -// duck-typed isBigInteger -proto.__bigi = require('../package.json').version -BigInteger.isBigInteger = function (obj, check_ver) { - return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi) -} - -// Bits per digit -var dbits - -// am: Compute w_j += (x*this_i), propagate carries, -// c is initial carry, returns final carry. -// c < 3*dvalue, x < 2*dvalue, this_i < dvalue -// We need to select the fastest one that works in this environment. - -// am1: use a single mult and divide to get the high bits, -// max digit bits should be 26 because -// max internal value = 2*dvalue^2-2*dvalue (< 2^53) -function am1(i, x, w, j, c, n) { - while (--n >= 0) { - var v = x * this[i++] + w[j] + c - c = Math.floor(v / 0x4000000) - w[j++] = v & 0x3ffffff - } - return c -} -// am2 avoids a big mult-and-extract completely. -// Max digit bits should be <= 30 because we do bitwise ops -// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31) -function am2(i, x, w, j, c, n) { - var xl = x & 0x7fff, - xh = x >> 15 - while (--n >= 0) { - var l = this[i] & 0x7fff - var h = this[i++] >> 15 - var m = xh * l + h * xl - l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff) - c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30) - w[j++] = l & 0x3fffffff - } - return c -} -// Alternately, set max digit bits to 28 since some -// browsers slow down when dealing with 32-bit numbers. -function am3(i, x, w, j, c, n) { - var xl = x & 0x3fff, - xh = x >> 14 - while (--n >= 0) { - var l = this[i] & 0x3fff - var h = this[i++] >> 14 - var m = xh * l + h * xl - l = xl * l + ((m & 0x3fff) << 14) + w[j] + c - c = (l >> 28) + (m >> 14) + xh * h - w[j++] = l & 0xfffffff - } - return c -} - -// wtf? -BigInteger.prototype.am = am1 -dbits = 26 - -BigInteger.prototype.DB = dbits -BigInteger.prototype.DM = ((1 << dbits) - 1) -var DV = BigInteger.prototype.DV = (1 << dbits) - -var BI_FP = 52 -BigInteger.prototype.FV = Math.pow(2, BI_FP) -BigInteger.prototype.F1 = BI_FP - dbits -BigInteger.prototype.F2 = 2 * dbits - BI_FP - -// Digit conversions -var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz" -var BI_RC = new Array() -var rr, vv -rr = "0".charCodeAt(0) -for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv -rr = "a".charCodeAt(0) -for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv -rr = "A".charCodeAt(0) -for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv - -function int2char(n) { - return BI_RM.charAt(n) -} - -function intAt(s, i) { - var c = BI_RC[s.charCodeAt(i)] - return (c == null) ? -1 : c -} - -// (protected) copy this to r -function bnpCopyTo(r) { - for (var i = this.t - 1; i >= 0; --i) r[i] = this[i] - r.t = this.t - r.s = this.s -} - -// (protected) set from integer value x, -DV <= x < DV -function bnpFromInt(x) { - this.t = 1 - this.s = (x < 0) ? -1 : 0 - if (x > 0) this[0] = x - else if (x < -1) this[0] = x + DV - else this.t = 0 -} - -// return bigint initialized to value -function nbv(i) { - var r = new BigInteger() - r.fromInt(i) - return r -} - -// (protected) set from string and radix -function bnpFromString(s, b) { - var self = this - - var k - if (b == 16) k = 4 - else if (b == 8) k = 3 - else if (b == 256) k = 8; // byte array - else if (b == 2) k = 1 - else if (b == 32) k = 5 - else if (b == 4) k = 2 - else { - self.fromRadix(s, b) - return - } - self.t = 0 - self.s = 0 - var i = s.length, - mi = false, - sh = 0 - while (--i >= 0) { - var x = (k == 8) ? s[i] & 0xff : intAt(s, i) - if (x < 0) { - if (s.charAt(i) == "-") mi = true - continue - } - mi = false - if (sh == 0) - self[self.t++] = x - else if (sh + k > self.DB) { - self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh - self[self.t++] = (x >> (self.DB - sh)) - } else - self[self.t - 1] |= x << sh - sh += k - if (sh >= self.DB) sh -= self.DB - } - if (k == 8 && (s[0] & 0x80) != 0) { - self.s = -1 - if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh - } - self.clamp() - if (mi) BigInteger.ZERO.subTo(self, self) -} - -// (protected) clamp off excess high words -function bnpClamp() { - var c = this.s & this.DM - while (this.t > 0 && this[this.t - 1] == c)--this.t -} - -// (public) return string representation in given radix -function bnToString(b) { - var self = this - if (self.s < 0) return "-" + self.negate() - .toString(b) - var k - if (b == 16) k = 4 - else if (b == 8) k = 3 - else if (b == 2) k = 1 - else if (b == 32) k = 5 - else if (b == 4) k = 2 - else return self.toRadix(b) - var km = (1 << k) - 1, - d, m = false, - r = "", - i = self.t - var p = self.DB - (i * self.DB) % k - if (i-- > 0) { - if (p < self.DB && (d = self[i] >> p) > 0) { - m = true - r = int2char(d) - } - while (i >= 0) { - if (p < k) { - d = (self[i] & ((1 << p) - 1)) << (k - p) - d |= self[--i] >> (p += self.DB - k) - } else { - d = (self[i] >> (p -= k)) & km - if (p <= 0) { - p += self.DB - --i - } - } - if (d > 0) m = true - if (m) r += int2char(d) - } - } - return m ? r : "0" -} - -// (public) -this -function bnNegate() { - var r = new BigInteger() - BigInteger.ZERO.subTo(this, r) - return r -} - -// (public) |this| -function bnAbs() { - return (this.s < 0) ? this.negate() : this -} - -// (public) return + if this > a, - if this < a, 0 if equal -function bnCompareTo(a) { - var r = this.s - a.s - if (r != 0) return r - var i = this.t - r = i - a.t - if (r != 0) return (this.s < 0) ? -r : r - while (--i >= 0) - if ((r = this[i] - a[i]) != 0) return r - return 0 -} - -// returns bit length of the integer x -function nbits(x) { - var r = 1, - t - if ((t = x >>> 16) != 0) { - x = t - r += 16 - } - if ((t = x >> 8) != 0) { - x = t - r += 8 - } - if ((t = x >> 4) != 0) { - x = t - r += 4 - } - if ((t = x >> 2) != 0) { - x = t - r += 2 - } - if ((t = x >> 1) != 0) { - x = t - r += 1 - } - return r -} - -// (public) return the number of bits in "this" -function bnBitLength() { - if (this.t <= 0) return 0 - return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM)) -} - -// (public) return the number of bytes in "this" -function bnByteLength() { - return this.bitLength() >> 3 -} - -// (protected) r = this << n*DB -function bnpDLShiftTo(n, r) { - var i - for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i] - for (i = n - 1; i >= 0; --i) r[i] = 0 - r.t = this.t + n - r.s = this.s -} - -// (protected) r = this >> n*DB -function bnpDRShiftTo(n, r) { - for (var i = n; i < this.t; ++i) r[i - n] = this[i] - r.t = Math.max(this.t - n, 0) - r.s = this.s -} - -// (protected) r = this << n -function bnpLShiftTo(n, r) { - var self = this - var bs = n % self.DB - var cbs = self.DB - bs - var bm = (1 << cbs) - 1 - var ds = Math.floor(n / self.DB), - c = (self.s << bs) & self.DM, - i - for (i = self.t - 1; i >= 0; --i) { - r[i + ds + 1] = (self[i] >> cbs) | c - c = (self[i] & bm) << bs - } - for (i = ds - 1; i >= 0; --i) r[i] = 0 - r[ds] = c - r.t = self.t + ds + 1 - r.s = self.s - r.clamp() -} - -// (protected) r = this >> n -function bnpRShiftTo(n, r) { - var self = this - r.s = self.s - var ds = Math.floor(n / self.DB) - if (ds >= self.t) { - r.t = 0 - return - } - var bs = n % self.DB - var cbs = self.DB - bs - var bm = (1 << bs) - 1 - r[0] = self[ds] >> bs - for (var i = ds + 1; i < self.t; ++i) { - r[i - ds - 1] |= (self[i] & bm) << cbs - r[i - ds] = self[i] >> bs - } - if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs - r.t = self.t - ds - r.clamp() -} - -// (protected) r = this - a -function bnpSubTo(a, r) { - var self = this - var i = 0, - c = 0, - m = Math.min(a.t, self.t) - while (i < m) { - c += self[i] - a[i] - r[i++] = c & self.DM - c >>= self.DB - } - if (a.t < self.t) { - c -= a.s - while (i < self.t) { - c += self[i] - r[i++] = c & self.DM - c >>= self.DB - } - c += self.s - } else { - c += self.s - while (i < a.t) { - c -= a[i] - r[i++] = c & self.DM - c >>= self.DB - } - c -= a.s - } - r.s = (c < 0) ? -1 : 0 - if (c < -1) r[i++] = self.DV + c - else if (c > 0) r[i++] = c - r.t = i - r.clamp() -} - -// (protected) r = this * a, r != this,a (HAC 14.12) -// "this" should be the larger one if appropriate. -function bnpMultiplyTo(a, r) { - var x = this.abs(), - y = a.abs() - var i = x.t - r.t = i + y.t - while (--i >= 0) r[i] = 0 - for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t) - r.s = 0 - r.clamp() - if (this.s != a.s) BigInteger.ZERO.subTo(r, r) -} - -// (protected) r = this^2, r != this (HAC 14.16) -function bnpSquareTo(r) { - var x = this.abs() - var i = r.t = 2 * x.t - while (--i >= 0) r[i] = 0 - for (i = 0; i < x.t - 1; ++i) { - var c = x.am(i, x[i], r, 2 * i, 0, 1) - if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) { - r[i + x.t] -= x.DV - r[i + x.t + 1] = 1 - } - } - if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1) - r.s = 0 - r.clamp() -} - -// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20) -// r != q, this != m. q or r may be null. -function bnpDivRemTo(m, q, r) { - var self = this - var pm = m.abs() - if (pm.t <= 0) return - var pt = self.abs() - if (pt.t < pm.t) { - if (q != null) q.fromInt(0) - if (r != null) self.copyTo(r) - return - } - if (r == null) r = new BigInteger() - var y = new BigInteger(), - ts = self.s, - ms = m.s - var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus - if (nsh > 0) { - pm.lShiftTo(nsh, y) - pt.lShiftTo(nsh, r) - } else { - pm.copyTo(y) - pt.copyTo(r) - } - var ys = y.t - var y0 = y[ys - 1] - if (y0 == 0) return - var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0) - var d1 = self.FV / yt, - d2 = (1 << self.F1) / yt, - e = 1 << self.F2 - var i = r.t, - j = i - ys, - t = (q == null) ? new BigInteger() : q - y.dlShiftTo(j, t) - if (r.compareTo(t) >= 0) { - r[r.t++] = 1 - r.subTo(t, r) - } - BigInteger.ONE.dlShiftTo(ys, t) - t.subTo(y, y); // "negative" y so we can replace sub with am later - while (y.t < ys) y[y.t++] = 0 - while (--j >= 0) { - // Estimate quotient digit - var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2) - if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out - y.dlShiftTo(j, t) - r.subTo(t, r) - while (r[i] < --qd) r.subTo(t, r) - } - } - if (q != null) { - r.drShiftTo(ys, q) - if (ts != ms) BigInteger.ZERO.subTo(q, q) - } - r.t = ys - r.clamp() - if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder - if (ts < 0) BigInteger.ZERO.subTo(r, r) -} - -// (public) this mod a -function bnMod(a) { - var r = new BigInteger() - this.abs() - .divRemTo(a, null, r) - if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r) - return r -} - -// Modular reduction using "classic" algorithm -function Classic(m) { - this.m = m -} - -function cConvert(x) { - if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m) - else return x -} - -function cRevert(x) { - return x -} - -function cReduce(x) { - x.divRemTo(this.m, null, x) -} - -function cMulTo(x, y, r) { - x.multiplyTo(y, r) - this.reduce(r) -} - -function cSqrTo(x, r) { - x.squareTo(r) - this.reduce(r) -} - -Classic.prototype.convert = cConvert -Classic.prototype.revert = cRevert -Classic.prototype.reduce = cReduce -Classic.prototype.mulTo = cMulTo -Classic.prototype.sqrTo = cSqrTo - -// (protected) return "-1/this % 2^DB"; useful for Mont. reduction -// justification: -// xy == 1 (mod m) -// xy = 1+km -// xy(2-xy) = (1+km)(1-km) -// x[y(2-xy)] = 1-k^2m^2 -// x[y(2-xy)] == 1 (mod m^2) -// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2 -// should reduce x and y(2-xy) by m^2 at each step to keep size bounded. -// JS multiply "overflows" differently from C/C++, so care is needed here. -function bnpInvDigit() { - if (this.t < 1) return 0 - var x = this[0] - if ((x & 1) == 0) return 0 - var y = x & 3; // y == 1/x mod 2^2 - y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4 - y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8 - y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16 - // last step - calculate inverse mod DV directly - // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints - y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits - // we really want the negative inverse, and -DV < y < DV - return (y > 0) ? this.DV - y : -y -} - -// Montgomery reduction -function Montgomery(m) { - this.m = m - this.mp = m.invDigit() - this.mpl = this.mp & 0x7fff - this.mph = this.mp >> 15 - this.um = (1 << (m.DB - 15)) - 1 - this.mt2 = 2 * m.t -} - -// xR mod m -function montConvert(x) { - var r = new BigInteger() - x.abs() - .dlShiftTo(this.m.t, r) - r.divRemTo(this.m, null, r) - if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r) - return r -} - -// x/R mod m -function montRevert(x) { - var r = new BigInteger() - x.copyTo(r) - this.reduce(r) - return r -} - -// x = x/R mod m (HAC 14.32) -function montReduce(x) { - while (x.t <= this.mt2) // pad x so am has enough room later - x[x.t++] = 0 - for (var i = 0; i < this.m.t; ++i) { - // faster way of calculating u0 = x[i]*mp mod DV - var j = x[i] & 0x7fff - var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM - // use am to combine the multiply-shift-add into one call - j = i + this.m.t - x[j] += this.m.am(0, u0, x, i, 0, this.m.t) - // propagate carry - while (x[j] >= x.DV) { - x[j] -= x.DV - x[++j]++ - } - } - x.clamp() - x.drShiftTo(this.m.t, x) - if (x.compareTo(this.m) >= 0) x.subTo(this.m, x) -} - -// r = "x^2/R mod m"; x != r -function montSqrTo(x, r) { - x.squareTo(r) - this.reduce(r) -} - -// r = "xy/R mod m"; x,y != r -function montMulTo(x, y, r) { - x.multiplyTo(y, r) - this.reduce(r) -} - -Montgomery.prototype.convert = montConvert -Montgomery.prototype.revert = montRevert -Montgomery.prototype.reduce = montReduce -Montgomery.prototype.mulTo = montMulTo -Montgomery.prototype.sqrTo = montSqrTo - -// (protected) true iff this is even -function bnpIsEven() { - return ((this.t > 0) ? (this[0] & 1) : this.s) == 0 -} - -// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79) -function bnpExp(e, z) { - if (e > 0xffffffff || e < 1) return BigInteger.ONE - var r = new BigInteger(), - r2 = new BigInteger(), - g = z.convert(this), - i = nbits(e) - 1 - g.copyTo(r) - while (--i >= 0) { - z.sqrTo(r, r2) - if ((e & (1 << i)) > 0) z.mulTo(r2, g, r) - else { - var t = r - r = r2 - r2 = t - } - } - return z.revert(r) -} - -// (public) this^e % m, 0 <= e < 2^32 -function bnModPowInt(e, m) { - var z - if (e < 256 || m.isEven()) z = new Classic(m) - else z = new Montgomery(m) - return this.exp(e, z) -} - -// protected -proto.copyTo = bnpCopyTo -proto.fromInt = bnpFromInt -proto.fromString = bnpFromString -proto.clamp = bnpClamp -proto.dlShiftTo = bnpDLShiftTo -proto.drShiftTo = bnpDRShiftTo -proto.lShiftTo = bnpLShiftTo -proto.rShiftTo = bnpRShiftTo -proto.subTo = bnpSubTo -proto.multiplyTo = bnpMultiplyTo -proto.squareTo = bnpSquareTo -proto.divRemTo = bnpDivRemTo -proto.invDigit = bnpInvDigit -proto.isEven = bnpIsEven -proto.exp = bnpExp - -// public -proto.toString = bnToString -proto.negate = bnNegate -proto.abs = bnAbs -proto.compareTo = bnCompareTo -proto.bitLength = bnBitLength -proto.byteLength = bnByteLength -proto.mod = bnMod -proto.modPowInt = bnModPowInt - -// (public) -function bnClone() { - var r = new BigInteger() - this.copyTo(r) - return r -} - -// (public) return value as integer -function bnIntValue() { - if (this.s < 0) { - if (this.t == 1) return this[0] - this.DV - else if (this.t == 0) return -1 - } else if (this.t == 1) return this[0] - else if (this.t == 0) return 0 - // assumes 16 < DB < 32 - return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0] -} - -// (public) return value as byte -function bnByteValue() { - return (this.t == 0) ? this.s : (this[0] << 24) >> 24 -} - -// (public) return value as short (assumes DB>=16) -function bnShortValue() { - return (this.t == 0) ? this.s : (this[0] << 16) >> 16 -} - -// (protected) return x s.t. r^x < DV -function bnpChunkSize(r) { - return Math.floor(Math.LN2 * this.DB / Math.log(r)) -} - -// (public) 0 if this == 0, 1 if this > 0 -function bnSigNum() { - if (this.s < 0) return -1 - else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0 - else return 1 -} - -// (protected) convert to radix string -function bnpToRadix(b) { - if (b == null) b = 10 - if (this.signum() == 0 || b < 2 || b > 36) return "0" - var cs = this.chunkSize(b) - var a = Math.pow(b, cs) - var d = nbv(a), - y = new BigInteger(), - z = new BigInteger(), - r = "" - this.divRemTo(d, y, z) - while (y.signum() > 0) { - r = (a + z.intValue()) - .toString(b) - .substr(1) + r - y.divRemTo(d, y, z) - } - return z.intValue() - .toString(b) + r -} - -// (protected) convert from radix string -function bnpFromRadix(s, b) { - var self = this - self.fromInt(0) - if (b == null) b = 10 - var cs = self.chunkSize(b) - var d = Math.pow(b, cs), - mi = false, - j = 0, - w = 0 - for (var i = 0; i < s.length; ++i) { - var x = intAt(s, i) - if (x < 0) { - if (s.charAt(i) == "-" && self.signum() == 0) mi = true - continue - } - w = b * w + x - if (++j >= cs) { - self.dMultiply(d) - self.dAddOffset(w, 0) - j = 0 - w = 0 - } - } - if (j > 0) { - self.dMultiply(Math.pow(b, j)) - self.dAddOffset(w, 0) - } - if (mi) BigInteger.ZERO.subTo(self, self) -} - -// (protected) alternate constructor -function bnpFromNumber(a, b, c) { - var self = this - if ("number" == typeof b) { - // new BigInteger(int,int,RNG) - if (a < 2) self.fromInt(1) - else { - self.fromNumber(a, c) - if (!self.testBit(a - 1)) // force MSB set - self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self) - if (self.isEven()) self.dAddOffset(1, 0); // force odd - while (!self.isProbablePrime(b)) { - self.dAddOffset(2, 0) - if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self) - } - } - } else { - // new BigInteger(int,RNG) - var x = new Array(), - t = a & 7 - x.length = (a >> 3) + 1 - b.nextBytes(x) - if (t > 0) x[0] &= ((1 << t) - 1) - else x[0] = 0 - self.fromString(x, 256) - } -} - -// (public) convert to bigendian byte array -function bnToByteArray() { - var self = this - var i = self.t, - r = new Array() - r[0] = self.s - var p = self.DB - (i * self.DB) % 8, - d, k = 0 - if (i-- > 0) { - if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p) - r[k++] = d | (self.s << (self.DB - p)) - while (i >= 0) { - if (p < 8) { - d = (self[i] & ((1 << p) - 1)) << (8 - p) - d |= self[--i] >> (p += self.DB - 8) - } else { - d = (self[i] >> (p -= 8)) & 0xff - if (p <= 0) { - p += self.DB - --i - } - } - if ((d & 0x80) != 0) d |= -256 - if (k === 0 && (self.s & 0x80) != (d & 0x80))++k - if (k > 0 || d != self.s) r[k++] = d - } - } - return r -} - -function bnEquals(a) { - return (this.compareTo(a) == 0) -} - -function bnMin(a) { - return (this.compareTo(a) < 0) ? this : a -} - -function bnMax(a) { - return (this.compareTo(a) > 0) ? this : a -} - -// (protected) r = this op a (bitwise) -function bnpBitwiseTo(a, op, r) { - var self = this - var i, f, m = Math.min(a.t, self.t) - for (i = 0; i < m; ++i) r[i] = op(self[i], a[i]) - if (a.t < self.t) { - f = a.s & self.DM - for (i = m; i < self.t; ++i) r[i] = op(self[i], f) - r.t = self.t - } else { - f = self.s & self.DM - for (i = m; i < a.t; ++i) r[i] = op(f, a[i]) - r.t = a.t - } - r.s = op(self.s, a.s) - r.clamp() -} - -// (public) this & a -function op_and(x, y) { - return x & y -} - -function bnAnd(a) { - var r = new BigInteger() - this.bitwiseTo(a, op_and, r) - return r -} - -// (public) this | a -function op_or(x, y) { - return x | y -} - -function bnOr(a) { - var r = new BigInteger() - this.bitwiseTo(a, op_or, r) - return r -} - -// (public) this ^ a -function op_xor(x, y) { - return x ^ y -} - -function bnXor(a) { - var r = new BigInteger() - this.bitwiseTo(a, op_xor, r) - return r -} - -// (public) this & ~a -function op_andnot(x, y) { - return x & ~y -} - -function bnAndNot(a) { - var r = new BigInteger() - this.bitwiseTo(a, op_andnot, r) - return r -} - -// (public) ~this -function bnNot() { - var r = new BigInteger() - for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i] - r.t = this.t - r.s = ~this.s - return r -} - -// (public) this << n -function bnShiftLeft(n) { - var r = new BigInteger() - if (n < 0) this.rShiftTo(-n, r) - else this.lShiftTo(n, r) - return r -} - -// (public) this >> n -function bnShiftRight(n) { - var r = new BigInteger() - if (n < 0) this.lShiftTo(-n, r) - else this.rShiftTo(n, r) - return r -} - -// return index of lowest 1-bit in x, x < 2^31 -function lbit(x) { - if (x == 0) return -1 - var r = 0 - if ((x & 0xffff) == 0) { - x >>= 16 - r += 16 - } - if ((x & 0xff) == 0) { - x >>= 8 - r += 8 - } - if ((x & 0xf) == 0) { - x >>= 4 - r += 4 - } - if ((x & 3) == 0) { - x >>= 2 - r += 2 - } - if ((x & 1) == 0)++r - return r -} - -// (public) returns index of lowest 1-bit (or -1 if none) -function bnGetLowestSetBit() { - for (var i = 0; i < this.t; ++i) - if (this[i] != 0) return i * this.DB + lbit(this[i]) - if (this.s < 0) return this.t * this.DB - return -1 -} - -// return number of 1 bits in x -function cbit(x) { - var r = 0 - while (x != 0) { - x &= x - 1 - ++r - } - return r -} - -// (public) return number of set bits -function bnBitCount() { - var r = 0, - x = this.s & this.DM - for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x) - return r -} - -// (public) true iff nth bit is set -function bnTestBit(n) { - var j = Math.floor(n / this.DB) - if (j >= this.t) return (this.s != 0) - return ((this[j] & (1 << (n % this.DB))) != 0) -} - -// (protected) this op (1<>= self.DB - } - if (a.t < self.t) { - c += a.s - while (i < self.t) { - c += self[i] - r[i++] = c & self.DM - c >>= self.DB - } - c += self.s - } else { - c += self.s - while (i < a.t) { - c += a[i] - r[i++] = c & self.DM - c >>= self.DB - } - c += a.s - } - r.s = (c < 0) ? -1 : 0 - if (c > 0) r[i++] = c - else if (c < -1) r[i++] = self.DV + c - r.t = i - r.clamp() -} - -// (public) this + a -function bnAdd(a) { - var r = new BigInteger() - this.addTo(a, r) - return r -} - -// (public) this - a -function bnSubtract(a) { - var r = new BigInteger() - this.subTo(a, r) - return r -} - -// (public) this * a -function bnMultiply(a) { - var r = new BigInteger() - this.multiplyTo(a, r) - return r -} - -// (public) this^2 -function bnSquare() { - var r = new BigInteger() - this.squareTo(r) - return r -} - -// (public) this / a -function bnDivide(a) { - var r = new BigInteger() - this.divRemTo(a, r, null) - return r -} - -// (public) this % a -function bnRemainder(a) { - var r = new BigInteger() - this.divRemTo(a, null, r) - return r -} - -// (public) [this/a,this%a] -function bnDivideAndRemainder(a) { - var q = new BigInteger(), - r = new BigInteger() - this.divRemTo(a, q, r) - return new Array(q, r) -} - -// (protected) this *= n, this >= 0, 1 < n < DV -function bnpDMultiply(n) { - this[this.t] = this.am(0, n - 1, this, 0, 0, this.t) - ++this.t - this.clamp() -} - -// (protected) this += n << w words, this >= 0 -function bnpDAddOffset(n, w) { - if (n == 0) return - while (this.t <= w) this[this.t++] = 0 - this[w] += n - while (this[w] >= this.DV) { - this[w] -= this.DV - if (++w >= this.t) this[this.t++] = 0 - ++this[w] - } -} - -// A "null" reducer -function NullExp() {} - -function nNop(x) { - return x -} - -function nMulTo(x, y, r) { - x.multiplyTo(y, r) -} - -function nSqrTo(x, r) { - x.squareTo(r) -} - -NullExp.prototype.convert = nNop -NullExp.prototype.revert = nNop -NullExp.prototype.mulTo = nMulTo -NullExp.prototype.sqrTo = nSqrTo - -// (public) this^e -function bnPow(e) { - return this.exp(e, new NullExp()) -} - -// (protected) r = lower n words of "this * a", a.t <= n -// "this" should be the larger one if appropriate. -function bnpMultiplyLowerTo(a, n, r) { - var i = Math.min(this.t + a.t, n) - r.s = 0; // assumes a,this >= 0 - r.t = i - while (i > 0) r[--i] = 0 - var j - for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t) - for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i) - r.clamp() -} - -// (protected) r = "this * a" without lower n words, n > 0 -// "this" should be the larger one if appropriate. -function bnpMultiplyUpperTo(a, n, r) { - --n - var i = r.t = this.t + a.t - n - r.s = 0; // assumes a,this >= 0 - while (--i >= 0) r[i] = 0 - for (i = Math.max(n - this.t, 0); i < a.t; ++i) - r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n) - r.clamp() - r.drShiftTo(1, r) -} - -// Barrett modular reduction -function Barrett(m) { - // setup Barrett - this.r2 = new BigInteger() - this.q3 = new BigInteger() - BigInteger.ONE.dlShiftTo(2 * m.t, this.r2) - this.mu = this.r2.divide(m) - this.m = m -} - -function barrettConvert(x) { - if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m) - else if (x.compareTo(this.m) < 0) return x - else { - var r = new BigInteger() - x.copyTo(r) - this.reduce(r) - return r - } -} - -function barrettRevert(x) { - return x -} - -// x = x mod m (HAC 14.42) -function barrettReduce(x) { - var self = this - x.drShiftTo(self.m.t - 1, self.r2) - if (x.t > self.m.t + 1) { - x.t = self.m.t + 1 - x.clamp() - } - self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3) - self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2) - while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1) - x.subTo(self.r2, x) - while (x.compareTo(self.m) >= 0) x.subTo(self.m, x) -} - -// r = x^2 mod m; x != r -function barrettSqrTo(x, r) { - x.squareTo(r) - this.reduce(r) -} - -// r = x*y mod m; x,y != r -function barrettMulTo(x, y, r) { - x.multiplyTo(y, r) - this.reduce(r) -} - -Barrett.prototype.convert = barrettConvert -Barrett.prototype.revert = barrettRevert -Barrett.prototype.reduce = barrettReduce -Barrett.prototype.mulTo = barrettMulTo -Barrett.prototype.sqrTo = barrettSqrTo - -// (public) this^e % m (HAC 14.85) -function bnModPow(e, m) { - var i = e.bitLength(), - k, r = nbv(1), - z - if (i <= 0) return r - else if (i < 18) k = 1 - else if (i < 48) k = 3 - else if (i < 144) k = 4 - else if (i < 768) k = 5 - else k = 6 - if (i < 8) - z = new Classic(m) - else if (m.isEven()) - z = new Barrett(m) - else - z = new Montgomery(m) - - // precomputation - var g = new Array(), - n = 3, - k1 = k - 1, - km = (1 << k) - 1 - g[1] = z.convert(this) - if (k > 1) { - var g2 = new BigInteger() - z.sqrTo(g[1], g2) - while (n <= km) { - g[n] = new BigInteger() - z.mulTo(g2, g[n - 2], g[n]) - n += 2 - } - } - - var j = e.t - 1, - w, is1 = true, - r2 = new BigInteger(), - t - i = nbits(e[j]) - 1 - while (j >= 0) { - if (i >= k1) w = (e[j] >> (i - k1)) & km - else { - w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i) - if (j > 0) w |= e[j - 1] >> (this.DB + i - k1) - } - - n = k - while ((w & 1) == 0) { - w >>= 1 - --n - } - if ((i -= n) < 0) { - i += this.DB - --j - } - if (is1) { // ret == 1, don't bother squaring or multiplying it - g[w].copyTo(r) - is1 = false - } else { - while (n > 1) { - z.sqrTo(r, r2) - z.sqrTo(r2, r) - n -= 2 - } - if (n > 0) z.sqrTo(r, r2) - else { - t = r - r = r2 - r2 = t - } - z.mulTo(r2, g[w], r) - } - - while (j >= 0 && (e[j] & (1 << i)) == 0) { - z.sqrTo(r, r2) - t = r - r = r2 - r2 = t - if (--i < 0) { - i = this.DB - 1 - --j - } - } - } - return z.revert(r) -} - -// (public) gcd(this,a) (HAC 14.54) -function bnGCD(a) { - var x = (this.s < 0) ? this.negate() : this.clone() - var y = (a.s < 0) ? a.negate() : a.clone() - if (x.compareTo(y) < 0) { - var t = x - x = y - y = t - } - var i = x.getLowestSetBit(), - g = y.getLowestSetBit() - if (g < 0) return x - if (i < g) g = i - if (g > 0) { - x.rShiftTo(g, x) - y.rShiftTo(g, y) - } - while (x.signum() > 0) { - if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x) - if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y) - if (x.compareTo(y) >= 0) { - x.subTo(y, x) - x.rShiftTo(1, x) - } else { - y.subTo(x, y) - y.rShiftTo(1, y) - } - } - if (g > 0) y.lShiftTo(g, y) - return y -} - -// (protected) this % n, n < 2^26 -function bnpModInt(n) { - if (n <= 0) return 0 - var d = this.DV % n, - r = (this.s < 0) ? n - 1 : 0 - if (this.t > 0) - if (d == 0) r = this[0] % n - else - for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n - return r -} - -// (public) 1/this % m (HAC 14.61) -function bnModInverse(m) { - var ac = m.isEven() - if (this.signum() === 0) throw new Error('division by zero') - if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO - var u = m.clone(), - v = this.clone() - var a = nbv(1), - b = nbv(0), - c = nbv(0), - d = nbv(1) - while (u.signum() != 0) { - while (u.isEven()) { - u.rShiftTo(1, u) - if (ac) { - if (!a.isEven() || !b.isEven()) { - a.addTo(this, a) - b.subTo(m, b) - } - a.rShiftTo(1, a) - } else if (!b.isEven()) b.subTo(m, b) - b.rShiftTo(1, b) - } - while (v.isEven()) { - v.rShiftTo(1, v) - if (ac) { - if (!c.isEven() || !d.isEven()) { - c.addTo(this, c) - d.subTo(m, d) - } - c.rShiftTo(1, c) - } else if (!d.isEven()) d.subTo(m, d) - d.rShiftTo(1, d) - } - if (u.compareTo(v) >= 0) { - u.subTo(v, u) - if (ac) a.subTo(c, a) - b.subTo(d, b) - } else { - v.subTo(u, v) - if (ac) c.subTo(a, c) - d.subTo(b, d) - } - } - if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO - while (d.compareTo(m) >= 0) d.subTo(m, d) - while (d.signum() < 0) d.addTo(m, d) - return d -} - -var lowprimes = [ - 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, - 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, - 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, - 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, - 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, - 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, - 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, - 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, - 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, - 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, - 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997 -] - -var lplim = (1 << 26) / lowprimes[lowprimes.length - 1] - -// (public) test primality with certainty >= 1-.5^t -function bnIsProbablePrime(t) { - var i, x = this.abs() - if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) { - for (i = 0; i < lowprimes.length; ++i) - if (x[0] == lowprimes[i]) return true - return false - } - if (x.isEven()) return false - i = 1 - while (i < lowprimes.length) { - var m = lowprimes[i], - j = i + 1 - while (j < lowprimes.length && m < lplim) m *= lowprimes[j++] - m = x.modInt(m) - while (i < j) if (m % lowprimes[i++] == 0) return false - } - return x.millerRabin(t) -} - -// (protected) true if probably prime (HAC 4.24, Miller-Rabin) -function bnpMillerRabin(t) { - var n1 = this.subtract(BigInteger.ONE) - var k = n1.getLowestSetBit() - if (k <= 0) return false - var r = n1.shiftRight(k) - t = (t + 1) >> 1 - if (t > lowprimes.length) t = lowprimes.length - var a = new BigInteger(null) - var j, bases = [] - for (var i = 0; i < t; ++i) { - for (;;) { - j = lowprimes[Math.floor(Math.random() * lowprimes.length)] - if (bases.indexOf(j) == -1) break - } - bases.push(j) - a.fromInt(j) - var y = a.modPow(r, this) - if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) { - var j = 1 - while (j++ < k && y.compareTo(n1) != 0) { - y = y.modPowInt(2, this) - if (y.compareTo(BigInteger.ONE) == 0) return false - } - if (y.compareTo(n1) != 0) return false - } - } - return true -} - -// protected -proto.chunkSize = bnpChunkSize -proto.toRadix = bnpToRadix -proto.fromRadix = bnpFromRadix -proto.fromNumber = bnpFromNumber -proto.bitwiseTo = bnpBitwiseTo -proto.changeBit = bnpChangeBit -proto.addTo = bnpAddTo -proto.dMultiply = bnpDMultiply -proto.dAddOffset = bnpDAddOffset -proto.multiplyLowerTo = bnpMultiplyLowerTo -proto.multiplyUpperTo = bnpMultiplyUpperTo -proto.modInt = bnpModInt -proto.millerRabin = bnpMillerRabin - -// public -proto.clone = bnClone -proto.intValue = bnIntValue -proto.byteValue = bnByteValue -proto.shortValue = bnShortValue -proto.signum = bnSigNum -proto.toByteArray = bnToByteArray -proto.equals = bnEquals -proto.min = bnMin -proto.max = bnMax -proto.and = bnAnd -proto.or = bnOr -proto.xor = bnXor -proto.andNot = bnAndNot -proto.not = bnNot -proto.shiftLeft = bnShiftLeft -proto.shiftRight = bnShiftRight -proto.getLowestSetBit = bnGetLowestSetBit -proto.bitCount = bnBitCount -proto.testBit = bnTestBit -proto.setBit = bnSetBit -proto.clearBit = bnClearBit -proto.flipBit = bnFlipBit -proto.add = bnAdd -proto.subtract = bnSubtract -proto.multiply = bnMultiply -proto.divide = bnDivide -proto.remainder = bnRemainder -proto.divideAndRemainder = bnDivideAndRemainder -proto.modPow = bnModPow -proto.modInverse = bnModInverse -proto.pow = bnPow -proto.gcd = bnGCD -proto.isProbablePrime = bnIsProbablePrime - -// JSBN-specific extension -proto.square = bnSquare - -// constants -BigInteger.ZERO = nbv(0) -BigInteger.ONE = nbv(1) -BigInteger.valueOf = nbv - -module.exports = BigInteger - -},{"../package.json":40}],38:[function(require,module,exports){ -(function (Buffer){ -// FIXME: Kind of a weird way to throw exceptions, consider removing -var assert = require('assert') -var BigInteger = require('./bigi') - -/** - * Turns a byte array into a big integer. - * - * This function will interpret a byte array as a big integer in big - * endian notation. - */ -BigInteger.fromByteArrayUnsigned = function(byteArray) { - // BigInteger expects a DER integer conformant byte array - if (byteArray[0] & 0x80) { - return new BigInteger([0].concat(byteArray)) - } - - return new BigInteger(byteArray) -} - -/** - * Returns a byte array representation of the big integer. - * - * This returns the absolute of the contained value in big endian - * form. A value of zero results in an empty array. - */ -BigInteger.prototype.toByteArrayUnsigned = function() { - var byteArray = this.toByteArray() - return byteArray[0] === 0 ? byteArray.slice(1) : byteArray -} - -BigInteger.fromDERInteger = function(byteArray) { - return new BigInteger(byteArray) -} - -/* - * Converts BigInteger to a DER integer representation. - * - * The format for this value uses the most significant bit as a sign - * bit. If the most significant bit is already set and the integer is - * positive, a 0x00 is prepended. - * - * Examples: - * - * 0 => 0x00 - * 1 => 0x01 - * -1 => 0xff - * 127 => 0x7f - * -127 => 0x81 - * 128 => 0x0080 - * -128 => 0x80 - * 255 => 0x00ff - * -255 => 0xff01 - * 16300 => 0x3fac - * -16300 => 0xc054 - * 62300 => 0x00f35c - * -62300 => 0xff0ca4 -*/ -BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray - -BigInteger.fromBuffer = function(buffer) { - // BigInteger expects a DER integer conformant byte array - if (buffer[0] & 0x80) { - var byteArray = Array.prototype.slice.call(buffer) - - return new BigInteger([0].concat(byteArray)) - } - - return new BigInteger(buffer) -} - -BigInteger.fromHex = function(hex) { - if (hex === '') return BigInteger.ZERO - - assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string') - assert.equal(hex.length % 2, 0, 'Incomplete hex') - return new BigInteger(hex, 16) -} - -BigInteger.prototype.toBuffer = function(size) { - var byteArray = this.toByteArrayUnsigned() - var zeros = [] - - var padding = size - byteArray.length - while (zeros.length < padding) zeros.push(0) - - return new Buffer(zeros.concat(byteArray)) -} - -BigInteger.prototype.toHex = function(size) { - return this.toBuffer(size).toString('hex') -} - -}).call(this,require("buffer").Buffer) -},{"./bigi":37,"assert":1,"buffer":5}],39:[function(require,module,exports){ -var BigInteger = require('./bigi') - -//addons -require('./convert') - -module.exports = BigInteger -},{"./bigi":37,"./convert":38}],40:[function(require,module,exports){ -module.exports={ - "_args": [ - [ - "bigi", - "/home/ian/git/bitcoin/bitcoinjs-lib-browser" - ] - ], - "_from": "bigi@latest", - "_id": "bigi@1.4.2", - "_inCache": true, - "_installable": true, - "_location": "/bigi", - "_nodeVersion": "6.1.0", - "_npmOperationalInternal": { - "host": "packages-12-west.internal.npmjs.com", - "tmp": "tmp/bigi-1.4.2.tgz_1469584192413_0.6801238611806184" - }, - "_npmUser": { - "email": "jprichardson@gmail.com", - "name": "jprichardson" - }, - "_npmVersion": "3.8.6", - "_phantomChildren": {}, - "_requested": { - "name": "bigi", - "raw": "bigi", - "rawSpec": "", - "scope": null, - "spec": "latest", - "type": "tag" - }, - "_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", - "bugs": { - "url": "https://github.com/cryptocoinjs/bigi/issues" - }, - "dependencies": {}, - "description": "Big integers.", - "devDependencies": { - "coveralls": "^2.11.2", - "istanbul": "^0.3.5", - "jshint": "^2.5.1", - "mocha": "^2.1.0", - "mochify": "^2.1.0" - }, - "directories": {}, - "dist": { - "shasum": "9c665a95f88b8b08fc05cfd731f561859d725825", - "tarball": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz" - }, - "gitHead": "c25308081c896ff84702303722bf5ecd8b3f78e3", - "homepage": "https://github.com/cryptocoinjs/bigi#readme", - "keywords": [ - "cryptography", - "math", - "bitcoin", - "arbitrary", - "precision", - "arithmetic", - "big", - "integer", - "int", - "number", - "biginteger", - "bigint", - "bignumber", - "decimal", - "float" - ], - "main": "./lib/index.js", - "maintainers": [ - { - "email": "boydb@midnightdesign.ws", - "name": "midnightlightning" - }, - { - "email": "sidazhang89@gmail.com", - "name": "sidazhang" - }, - { - "email": "npm@shesek.info", - "name": "nadav" - }, - { - "email": "jprichardson@gmail.com", - "name": "jprichardson" - } - ], - "name": "bigi", - "optionalDependencies": {}, - "readme": "ERROR: No README data found!", - "repository": { - "type": "git", - "url": "git+https://github.com/cryptocoinjs/bigi.git" - }, - "scripts": { - "browser-test": "mochify --wd -R spec", - "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js", - "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info", - "jshint": "jshint --config jshint.json lib/*.js ; true", - "test": "_mocha -- test/*.js", - "unit": "mocha" - }, - "testling": { - "browsers": [ - "ie/9..latest", - "firefox/latest", - "chrome/latest", - "safari/6.0..latest", - "iphone/6.0..latest", - "android-browser/4.2..latest" - ], - "files": "test/*.js", - "harness": "mocha" - }, - "version": "1.4.2" -} - -},{}],41:[function(require,module,exports){ -// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki -// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] -// NOTE: SIGHASH byte ignored AND restricted, truncate before use - -var Buffer = require('safe-buffer').Buffer - -function check (buffer) { - if (buffer.length < 8) return false - if (buffer.length > 72) return false - if (buffer[0] !== 0x30) return false - if (buffer[1] !== buffer.length - 2) return false - if (buffer[2] !== 0x02) return false - - var lenR = buffer[3] - if (lenR === 0) return false - if (5 + lenR >= buffer.length) return false - if (buffer[4 + lenR] !== 0x02) return false - - var lenS = buffer[5 + lenR] - if (lenS === 0) return false - if ((6 + lenR + lenS) !== buffer.length) return false - - if (buffer[4] & 0x80) return false - if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false - - if (buffer[lenR + 6] & 0x80) return false - if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false - return true -} - -function decode (buffer) { - if (buffer.length < 8) throw new Error('DER sequence length is too short') - if (buffer.length > 72) throw new Error('DER sequence length is too long') - if (buffer[0] !== 0x30) throw new Error('Expected DER sequence') - if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid') - if (buffer[2] !== 0x02) throw new Error('Expected DER integer') - - var lenR = buffer[3] - if (lenR === 0) throw new Error('R length is zero') - if (5 + lenR >= buffer.length) throw new Error('R length is too long') - if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)') - - var lenS = buffer[5 + lenR] - if (lenS === 0) throw new Error('S length is zero') - if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid') - - if (buffer[4] & 0x80) throw new Error('R value is negative') - if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded') - - if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative') - if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded') - - // non-BIP66 - extract R, S values - return { - r: buffer.slice(4, 4 + lenR), - s: buffer.slice(6 + lenR) - } -} - -/* - * Expects r and s to be positive DER integers. - * - * The DER format uses the most significant bit as a sign bit (& 0x80). - * If the significant bit is set AND the integer is positive, a 0x00 is prepended. - * - * Examples: - * - * 0 => 0x00 - * 1 => 0x01 - * -1 => 0xff - * 127 => 0x7f - * -127 => 0x81 - * 128 => 0x0080 - * -128 => 0x80 - * 255 => 0x00ff - * -255 => 0xff01 - * 16300 => 0x3fac - * -16300 => 0xc054 - * 62300 => 0x00f35c - * -62300 => 0xff0ca4 -*/ -function encode (r, s) { - var lenR = r.length - var lenS = s.length - if (lenR === 0) throw new Error('R length is zero') - if (lenS === 0) throw new Error('S length is zero') - if (lenR > 33) throw new Error('R length is too long') - if (lenS > 33) throw new Error('S length is too long') - if (r[0] & 0x80) throw new Error('R value is negative') - if (s[0] & 0x80) throw new Error('S value is negative') - if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded') - if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded') - - var signature = Buffer.allocUnsafe(6 + lenR + lenS) - - // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] - signature[0] = 0x30 - signature[1] = signature.length - 2 - signature[2] = 0x02 - signature[3] = r.length - r.copy(signature, 4) - signature[4 + lenR] = 0x02 - signature[5 + lenR] = s.length - s.copy(signature, 6 + lenR) - - return signature -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"safe-buffer":128}],42:[function(require,module,exports){ -module.exports={ - "OP_FALSE": 0, - "OP_0": 0, - "OP_PUSHDATA1": 76, - "OP_PUSHDATA2": 77, - "OP_PUSHDATA4": 78, - "OP_1NEGATE": 79, - "OP_RESERVED": 80, - "OP_1": 81, - "OP_TRUE": 81, - "OP_2": 82, - "OP_3": 83, - "OP_4": 84, - "OP_5": 85, - "OP_6": 86, - "OP_7": 87, - "OP_8": 88, - "OP_9": 89, - "OP_10": 90, - "OP_11": 91, - "OP_12": 92, - "OP_13": 93, - "OP_14": 94, - "OP_15": 95, - "OP_16": 96, - - "OP_NOP": 97, - "OP_VER": 98, - "OP_IF": 99, - "OP_NOTIF": 100, - "OP_VERIF": 101, - "OP_VERNOTIF": 102, - "OP_ELSE": 103, - "OP_ENDIF": 104, - "OP_VERIFY": 105, - "OP_RETURN": 106, - - "OP_TOALTSTACK": 107, - "OP_FROMALTSTACK": 108, - "OP_2DROP": 109, - "OP_2DUP": 110, - "OP_3DUP": 111, - "OP_2OVER": 112, - "OP_2ROT": 113, - "OP_2SWAP": 114, - "OP_IFDUP": 115, - "OP_DEPTH": 116, - "OP_DROP": 117, - "OP_DUP": 118, - "OP_NIP": 119, - "OP_OVER": 120, - "OP_PICK": 121, - "OP_ROLL": 122, - "OP_ROT": 123, - "OP_SWAP": 124, - "OP_TUCK": 125, - - "OP_CAT": 126, - "OP_SUBSTR": 127, - "OP_LEFT": 128, - "OP_RIGHT": 129, - "OP_SIZE": 130, - - "OP_INVERT": 131, - "OP_AND": 132, - "OP_OR": 133, - "OP_XOR": 134, - "OP_EQUAL": 135, - "OP_EQUALVERIFY": 136, - "OP_RESERVED1": 137, - "OP_RESERVED2": 138, - - "OP_1ADD": 139, - "OP_1SUB": 140, - "OP_2MUL": 141, - "OP_2DIV": 142, - "OP_NEGATE": 143, - "OP_ABS": 144, - "OP_NOT": 145, - "OP_0NOTEQUAL": 146, - "OP_ADD": 147, - "OP_SUB": 148, - "OP_MUL": 149, - "OP_DIV": 150, - "OP_MOD": 151, - "OP_LSHIFT": 152, - "OP_RSHIFT": 153, - - "OP_BOOLAND": 154, - "OP_BOOLOR": 155, - "OP_NUMEQUAL": 156, - "OP_NUMEQUALVERIFY": 157, - "OP_NUMNOTEQUAL": 158, - "OP_LESSTHAN": 159, - "OP_GREATERTHAN": 160, - "OP_LESSTHANOREQUAL": 161, - "OP_GREATERTHANOREQUAL": 162, - "OP_MIN": 163, - "OP_MAX": 164, - - "OP_WITHIN": 165, - - "OP_RIPEMD160": 166, - "OP_SHA1": 167, - "OP_SHA256": 168, - "OP_HASH160": 169, - "OP_HASH256": 170, - "OP_CODESEPARATOR": 171, - "OP_CHECKSIG": 172, - "OP_CHECKSIGVERIFY": 173, - "OP_CHECKMULTISIG": 174, - "OP_CHECKMULTISIGVERIFY": 175, - - "OP_NOP1": 176, - "OP_NOP2": 177, - "OP_CHECKLOCKTIMEVERIFY": 177, - - "OP_NOP3": 178, - "OP_NOP4": 179, - "OP_NOP5": 180, - "OP_NOP6": 181, - "OP_NOP7": 182, - "OP_NOP8": 183, - "OP_NOP9": 184, - "OP_NOP10": 185, - - "OP_PUBKEYHASH": 253, - "OP_PUBKEY": 254, - "OP_INVALIDOPCODE": 255 -} - -},{}],43:[function(require,module,exports){ -var OPS = require('./index.json') - -var map = {} -for (var op in OPS) { - var code = OPS[op] - map[code] = op -} - -module.exports = map - -},{"./index.json":42}],44:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var bech32 = require('bech32') -var bs58check = require('bs58check') -var bscript = require('./script') -var btemplates = require('./templates') -var networks = require('./networks') -var typeforce = require('typeforce') -var types = require('./types') - -function fromBase58Check (address) { - var payload = bs58check.decode(address) - - // TODO: 4.0.0, move to "toOutputScript" - if (payload.length < 21) throw new TypeError(address + ' is too short') - if (payload.length > 21) throw new TypeError(address + ' is too long') - - var version = payload.readUInt8(0) - var hash = payload.slice(1) - - return { version: version, hash: hash } -} - -function fromBech32 (address) { - var result = bech32.decode(address) - var data = bech32.fromWords(result.words.slice(1)) - - return { - version: result.words[0], - prefix: result.prefix, - data: Buffer.from(data) - } -} - -function toBase58Check (hash, version) { - typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments) - - var payload = Buffer.allocUnsafe(21) - payload.writeUInt8(version, 0) - hash.copy(payload, 1) - - return bs58check.encode(payload) -} - -function toBech32 (data, version, prefix) { - var words = bech32.toWords(data) - words.unshift(version) - - return bech32.encode(prefix, words) -} - -function fromOutputScript (outputScript, network) { - network = network || networks.bitcoin - - if (btemplates.pubKeyHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(3, 23), network.pubKeyHash) - if (btemplates.scriptHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(2, 22), network.scriptHash) - if (btemplates.witnessPubKeyHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 22), 0, network.bech32) - if (btemplates.witnessScriptHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 34), 0, network.bech32) - - throw new Error(bscript.toASM(outputScript) + ' has no matching Address') -} - -function toOutputScript (address, network) { - network = network || networks.bitcoin - - var decode - try { - decode = fromBase58Check(address) - } catch (e) {} - - if (decode) { - if (decode.version === network.pubKeyHash) return btemplates.pubKeyHash.output.encode(decode.hash) - if (decode.version === network.scriptHash) return btemplates.scriptHash.output.encode(decode.hash) - } else { - try { - decode = fromBech32(address) - } catch (e) {} - - if (decode) { - if (decode.prefix !== network.bech32) throw new Error(address + ' has an invalid prefix') - if (decode.version === 0) { - if (decode.data.length === 20) return btemplates.witnessPubKeyHash.output.encode(decode.data) - if (decode.data.length === 32) return btemplates.witnessScriptHash.output.encode(decode.data) - } - } - } - - throw new Error(address + ' has no matching Script') -} - -module.exports = { - fromBase58Check: fromBase58Check, - fromBech32: fromBech32, - fromOutputScript: fromOutputScript, - toBase58Check: toBase58Check, - toBech32: toBech32, - toOutputScript: toOutputScript -} - -},{"./networks":53,"./script":54,"./templates":56,"./types":80,"bech32":36,"bs58check":85,"safe-buffer":128,"typeforce":139}],45:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var bcrypto = require('./crypto') -var fastMerkleRoot = require('merkle-lib/fastRoot') -var typeforce = require('typeforce') -var types = require('./types') -var varuint = require('varuint-bitcoin') - -var Transaction = require('./transaction') - -function Block () { - this.version = 1 - this.prevHash = null - this.merkleRoot = null - this.timestamp = 0 - this.bits = 0 - this.nonce = 0 -} - -Block.fromBuffer = function (buffer) { - if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)') - - var offset = 0 - function readSlice (n) { - offset += n - return buffer.slice(offset - n, offset) - } - - function readUInt32 () { - var i = buffer.readUInt32LE(offset) - offset += 4 - return i - } - - function readInt32 () { - var i = buffer.readInt32LE(offset) - offset += 4 - return i - } - - var block = new Block() - block.version = readInt32() - block.prevHash = readSlice(32) - block.merkleRoot = readSlice(32) - block.timestamp = readUInt32() - block.bits = readUInt32() - block.nonce = readUInt32() - - if (buffer.length === 80) return block - - function readVarInt () { - var vi = varuint.decode(buffer, offset) - offset += varuint.decode.bytes - return vi - } - - function readTransaction () { - var tx = Transaction.fromBuffer(buffer.slice(offset), true) - offset += tx.byteLength() - return tx - } - - var nTransactions = readVarInt() - block.transactions = [] - - for (var i = 0; i < nTransactions; ++i) { - var tx = readTransaction() - block.transactions.push(tx) - } - - return block -} - -Block.prototype.byteLength = function (headersOnly) { - if (headersOnly || !this.transactions) return 80 - - return 80 + varuint.encodingLength(this.transactions.length) + this.transactions.reduce(function (a, x) { - return a + x.byteLength() - }, 0) -} - -Block.fromHex = function (hex) { - return Block.fromBuffer(Buffer.from(hex, 'hex')) -} - -Block.prototype.getHash = function () { - return bcrypto.hash256(this.toBuffer(true)) -} - -Block.prototype.getId = function () { - return this.getHash().reverse().toString('hex') -} - -Block.prototype.getUTCDate = function () { - var date = new Date(0) // epoch - date.setUTCSeconds(this.timestamp) - - return date -} - -// TODO: buffer, offset compatibility -Block.prototype.toBuffer = function (headersOnly) { - var buffer = Buffer.allocUnsafe(this.byteLength(headersOnly)) - - var offset = 0 - function writeSlice (slice) { - slice.copy(buffer, offset) - offset += slice.length - } - - function writeInt32 (i) { - buffer.writeInt32LE(i, offset) - offset += 4 - } - function writeUInt32 (i) { - buffer.writeUInt32LE(i, offset) - offset += 4 - } - - writeInt32(this.version) - writeSlice(this.prevHash) - writeSlice(this.merkleRoot) - writeUInt32(this.timestamp) - writeUInt32(this.bits) - writeUInt32(this.nonce) - - if (headersOnly || !this.transactions) return buffer - - varuint.encode(this.transactions.length, buffer, offset) - offset += varuint.encode.bytes - - this.transactions.forEach(function (tx) { - var txSize = tx.byteLength() // TODO: extract from toBuffer? - tx.toBuffer(buffer, offset) - offset += txSize - }) - - return buffer -} - -Block.prototype.toHex = function (headersOnly) { - return this.toBuffer(headersOnly).toString('hex') -} - -Block.calculateTarget = function (bits) { - var exponent = ((bits & 0xff000000) >> 24) - 3 - var mantissa = bits & 0x007fffff - var target = Buffer.alloc(32, 0) - target.writeUInt32BE(mantissa, 28 - exponent) - return target -} - -Block.calculateMerkleRoot = function (transactions) { - typeforce([{ getHash: types.Function }], transactions) - if (transactions.length === 0) throw TypeError('Cannot compute merkle root for zero transactions') - - var hashes = transactions.map(function (transaction) { - return transaction.getHash() - }) - - return fastMerkleRoot(hashes, bcrypto.hash256) -} - -Block.prototype.checkMerkleRoot = function () { - if (!this.transactions) return false - - var actualMerkleRoot = Block.calculateMerkleRoot(this.transactions) - return this.merkleRoot.compare(actualMerkleRoot) === 0 -} - -Block.prototype.checkProofOfWork = function () { - var hash = this.getHash().reverse() - var target = Block.calculateTarget(this.bits) - - return hash.compare(target) <= 0 -} - -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){ -var pushdata = require('pushdata-bitcoin') -var varuint = require('varuint-bitcoin') - -// https://github.com/feross/buffer/blob/master/index.js#L1127 -function verifuint (value, max) { - if (typeof value !== 'number') throw new Error('cannot write a non-number as a number') - if (value < 0) throw new Error('specified a negative value for writing an unsigned value') - if (value > max) throw new Error('RangeError: value out of range') - if (Math.floor(value) !== value) throw new Error('value has a fractional component') -} - -function readUInt64LE (buffer, offset) { - var a = buffer.readUInt32LE(offset) - var b = buffer.readUInt32LE(offset + 4) - b *= 0x100000000 - - verifuint(b + a, 0x001fffffffffffff) - - return b + a -} - -function writeUInt64LE (buffer, value, offset) { - verifuint(value, 0x001fffffffffffff) - - buffer.writeInt32LE(value & -1, offset) - buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4) - return offset + 8 -} - -// TODO: remove in 4.0.0? -function readVarInt (buffer, offset) { - var result = varuint.decode(buffer, offset) - - return { - number: result, - size: varuint.decode.bytes - } -} - -// TODO: remove in 4.0.0? -function writeVarInt (buffer, number, offset) { - varuint.encode(number, buffer, offset) - return varuint.encode.bytes -} - -module.exports = { - pushDataSize: pushdata.encodingLength, - readPushDataInt: pushdata.decode, - readUInt64LE: readUInt64LE, - readVarInt: readVarInt, - varIntBuffer: varuint.encode, - varIntSize: varuint.encodingLength, - writePushDataInt: pushdata.encode, - writeUInt64LE: writeUInt64LE, - writeVarInt: writeVarInt -} - -},{"pushdata-bitcoin":125,"varuint-bitcoin":141}],47:[function(require,module,exports){ -var createHash = require('create-hash') - -function ripemd160 (buffer) { - return createHash('rmd160').update(buffer).digest() -} - -function sha1 (buffer) { - return createHash('sha1').update(buffer).digest() -} - -function sha256 (buffer) { - return createHash('sha256').update(buffer).digest() -} - -function hash160 (buffer) { - return ripemd160(sha256(buffer)) -} - -function hash256 (buffer) { - return sha256(sha256(buffer)) -} - -module.exports = { - hash160: hash160, - hash256: hash256, - ripemd160: ripemd160, - sha1: sha1, - sha256: sha256 -} - -},{"create-hash":87}],48:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var createHmac = require('create-hmac') -var typeforce = require('typeforce') -var types = require('./types') - -var BigInteger = require('bigi') -var ECSignature = require('./ecsignature') - -var ZERO = Buffer.alloc(1, 0) -var ONE = Buffer.alloc(1, 1) - -var ecurve = require('ecurve') -var secp256k1 = ecurve.getCurveByName('secp256k1') - -// https://tools.ietf.org/html/rfc6979#section-3.2 -function deterministicGenerateK (hash, x, checkSig) { - typeforce(types.tuple( - types.Hash256bit, - types.Buffer256bit, - types.Function - ), arguments) - - // Step A, ignored as hash already provided - // Step B - // Step C - var k = Buffer.alloc(32, 0) - var v = Buffer.alloc(32, 1) - - // Step D - k = createHmac('sha256', k) - .update(v) - .update(ZERO) - .update(x) - .update(hash) - .digest() - - // Step E - v = createHmac('sha256', k).update(v).digest() - - // Step F - k = createHmac('sha256', k) - .update(v) - .update(ONE) - .update(x) - .update(hash) - .digest() - - // Step G - v = createHmac('sha256', k).update(v).digest() - - // Step H1/H2a, ignored as tlen === qlen (256 bit) - // Step H2b - v = createHmac('sha256', k).update(v).digest() - - var T = BigInteger.fromBuffer(v) - - // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA - while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) { - k = createHmac('sha256', k) - .update(v) - .update(ZERO) - .digest() - - v = createHmac('sha256', k).update(v).digest() - - // Step H1/H2a, again, ignored as tlen === qlen (256 bit) - // Step H2b again - v = createHmac('sha256', k).update(v).digest() - T = BigInteger.fromBuffer(v) - } - - return T -} - -var N_OVER_TWO = secp256k1.n.shiftRight(1) - -function sign (hash, d) { - typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments) - - var x = d.toBuffer(32) - var e = BigInteger.fromBuffer(hash) - var n = secp256k1.n - var G = secp256k1.G - - var r, s - deterministicGenerateK(hash, x, function (k) { - var Q = G.multiply(k) - - if (secp256k1.isInfinity(Q)) return false - - r = Q.affineX.mod(n) - if (r.signum() === 0) return false - - s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n) - if (s.signum() === 0) return false - - return true - }) - - // enforce low S values, see bip62: 'low s values in signatures' - if (s.compareTo(N_OVER_TWO) > 0) { - s = n.subtract(s) - } - - return new ECSignature(r, s) -} - -function verify (hash, signature, Q) { - typeforce(types.tuple( - types.Hash256bit, - types.ECSignature, - types.ECPoint - ), arguments) - - var n = secp256k1.n - var G = secp256k1.G - - var r = signature.r - var s = signature.s - - // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1] - if (r.signum() <= 0 || r.compareTo(n) >= 0) return false - if (s.signum() <= 0 || s.compareTo(n) >= 0) return false - - // 1.4.2 H = Hash(M), already done by the user - // 1.4.3 e = H - var e = BigInteger.fromBuffer(hash) - - // Compute s^-1 - var sInv = s.modInverse(n) - - // 1.4.4 Compute u1 = es^−1 mod n - // u2 = rs^−1 mod n - var u1 = e.multiply(sInv).mod(n) - var u2 = r.multiply(sInv).mod(n) - - // 1.4.5 Compute R = (xR, yR) - // R = u1G + u2Q - var R = G.multiplyTwo(u1, Q, u2) - - // 1.4.5 (cont.) Enforce R is not at infinity - if (secp256k1.isInfinity(R)) return false - - // 1.4.6 Convert the field element R.x to an integer - var xR = R.affineX - - // 1.4.7 Set v = xR mod n - var v = xR.mod(n) - - // 1.4.8 If v = r, output "valid", and if v != r, output "invalid" - return v.equals(r) -} - -module.exports = { - deterministicGenerateK: deterministicGenerateK, - sign: sign, - verify: verify, - - // TODO: remove - __curve: secp256k1 -} - -},{"./ecsignature":50,"./types":80,"bigi":39,"create-hmac":90,"ecurve":94,"safe-buffer":128,"typeforce":139}],49:[function(require,module,exports){ -var baddress = require('./address') -var bcrypto = require('./crypto') -var ecdsa = require('./ecdsa') -var randomBytes = require('randombytes') -var typeforce = require('typeforce') -var types = require('./types') -var wif = require('wif') - -var NETWORKS = require('./networks') -var BigInteger = require('bigi') - -var ecurve = require('ecurve') -var secp256k1 = ecdsa.__curve - -function ECPair (d, Q, options) { - if (options) { - typeforce({ - compressed: types.maybe(types.Boolean), - network: types.maybe(types.Network) - }, options) - } - - options = options || {} - - if (d) { - if (d.signum() <= 0) throw new Error('Private key must be greater than 0') - if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order') - if (Q) throw new TypeError('Unexpected publicKey parameter') - - this.d = d - } else { - typeforce(types.ECPoint, Q) - - this.__Q = Q - } - - this.compressed = options.compressed === undefined ? true : options.compressed - this.network = options.network || NETWORKS.bitcoin -} - -Object.defineProperty(ECPair.prototype, 'Q', { - get: function () { - if (!this.__Q && this.d) { - this.__Q = secp256k1.G.multiply(this.d) - } - - return this.__Q - } -}) - -ECPair.fromPublicKeyBuffer = function (buffer, network) { - var Q = ecurve.Point.decodeFrom(secp256k1, buffer) - - return new ECPair(null, Q, { - compressed: Q.compressed, - network: network - }) -} - -ECPair.fromWIF = function (string, network) { - var decoded = wif.decode(string) - var version = decoded.version - - // list of networks? - if (types.Array(network)) { - network = network.filter(function (x) { - return version === x.wif - }).pop() - - if (!network) throw new Error('Unknown network version') - - // otherwise, assume a network object (or default to bitcoin) - } else { - network = network || NETWORKS.bitcoin - - if (version !== network.wif) throw new Error('Invalid network version') - } - - var d = BigInteger.fromBuffer(decoded.privateKey) - - return new ECPair(d, null, { - compressed: decoded.compressed, - network: network - }) -} - -ECPair.makeRandom = function (options) { - options = options || {} - - var rng = options.rng || randomBytes - - var d - do { - var buffer = rng(32) - typeforce(types.Buffer256bit, buffer) - - d = BigInteger.fromBuffer(buffer) - } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0) - - return new ECPair(d, null, options) -} - -ECPair.prototype.getAddress = function () { - return baddress.toBase58Check(bcrypto.hash160(this.getPublicKeyBuffer()), this.getNetwork().pubKeyHash) -} - -ECPair.prototype.getNetwork = function () { - return this.network -} - -ECPair.prototype.getPublicKeyBuffer = function () { - return this.Q.getEncoded(this.compressed) -} - -ECPair.prototype.sign = function (hash) { - if (!this.d) throw new Error('Missing private key') - - return ecdsa.sign(hash, this.d) -} - -ECPair.prototype.toWIF = function () { - if (!this.d) throw new Error('Missing private key') - - return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed) -} - -ECPair.prototype.verify = function (hash, signature) { - return ecdsa.verify(hash, signature, this.Q) -} - -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){ -(function (Buffer){ -var bip66 = require('bip66') -var typeforce = require('typeforce') -var types = require('./types') - -var BigInteger = require('bigi') - -function ECSignature (r, s) { - typeforce(types.tuple(types.BigInt, types.BigInt), arguments) - - this.r = r - this.s = s -} - -ECSignature.parseCompact = function (buffer) { - typeforce(types.BufferN(65), buffer) - - var flagByte = buffer.readUInt8(0) - 27 - if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter') - - var compressed = !!(flagByte & 4) - var recoveryParam = flagByte & 3 - var signature = ECSignature.fromRSBuffer(buffer.slice(1)) - - return { - compressed: compressed, - i: recoveryParam, - signature: signature - } -} - -ECSignature.fromRSBuffer = function (buffer) { - typeforce(types.BufferN(64), buffer) - - var r = BigInteger.fromBuffer(buffer.slice(0, 32)) - var s = BigInteger.fromBuffer(buffer.slice(32, 64)) - return new ECSignature(r, s) -} - -ECSignature.fromDER = function (buffer) { - var decode = bip66.decode(buffer) - var r = BigInteger.fromDERInteger(decode.r) - var s = BigInteger.fromDERInteger(decode.s) - - return new ECSignature(r, s) -} - -// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed) -ECSignature.parseScriptSignature = function (buffer) { - var hashType = buffer.readUInt8(buffer.length - 1) - var hashTypeMod = hashType & ~0x80 - - if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType) - - return { - signature: ECSignature.fromDER(buffer.slice(0, -1)), - hashType: hashType - } -} - -ECSignature.prototype.toCompact = function (i, compressed) { - if (compressed) { - i += 4 - } - - i += 27 - - var buffer = Buffer.alloc(65) - buffer.writeUInt8(i, 0) - this.toRSBuffer(buffer, 1) - return buffer -} - -ECSignature.prototype.toDER = function () { - var r = Buffer.from(this.r.toDERInteger()) - var s = Buffer.from(this.s.toDERInteger()) - - return bip66.encode(r, s) -} - -ECSignature.prototype.toRSBuffer = function (buffer, offset) { - buffer = buffer || Buffer.alloc(64) - this.r.toBuffer(32).copy(buffer, offset) - this.s.toBuffer(32).copy(buffer, offset + 32) - return buffer -} - -ECSignature.prototype.toScriptSignature = function (hashType) { - var hashTypeMod = hashType & ~0x80 - if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType) - - var hashTypeBuffer = Buffer.alloc(1) - hashTypeBuffer.writeUInt8(hashType, 0) - - return Buffer.concat([this.toDER(), hashTypeBuffer]) -} - -module.exports = ECSignature - -}).call(this,require("buffer").Buffer) -},{"./types":80,"bigi":39,"bip66":41,"buffer":5,"typeforce":139}],51:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var base58check = require('bs58check') -var bcrypto = require('./crypto') -var createHmac = require('create-hmac') -var typeforce = require('typeforce') -var types = require('./types') -var NETWORKS = require('./networks') - -var BigInteger = require('bigi') -var ECPair = require('./ecpair') - -var ecurve = require('ecurve') -var curve = ecurve.getCurveByName('secp256k1') - -function HDNode (keyPair, chainCode) { - typeforce(types.tuple('ECPair', types.Buffer256bit), arguments) - - if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs') - - this.keyPair = keyPair - this.chainCode = chainCode - this.depth = 0 - this.index = 0 - this.parentFingerprint = 0x00000000 -} - -HDNode.HIGHEST_BIT = 0x80000000 -HDNode.LENGTH = 78 -HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8') - -HDNode.fromSeedBuffer = function (seed, network) { - typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments) - - if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits') - if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits') - - var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest() - var IL = I.slice(0, 32) - var IR = I.slice(32) - - // In case IL is 0 or >= n, the master key is invalid - // This is handled by the ECPair constructor - var pIL = BigInteger.fromBuffer(IL) - var keyPair = new ECPair(pIL, null, { - network: network - }) - - return new HDNode(keyPair, IR) -} - -HDNode.fromSeedHex = function (hex, network) { - return HDNode.fromSeedBuffer(Buffer.from(hex, 'hex'), network) -} - -HDNode.fromBase58 = function (string, networks) { - var buffer = base58check.decode(string) - if (buffer.length !== 78) throw new Error('Invalid buffer length') - - // 4 bytes: version bytes - var version = buffer.readUInt32BE(0) - var network - - // list of networks? - if (Array.isArray(networks)) { - network = networks.filter(function (x) { - return version === x.bip32.private || - version === x.bip32.public - }).pop() - - if (!network) throw new Error('Unknown network version') - - // otherwise, assume a network object (or default to bitcoin) - } else { - network = networks || NETWORKS.bitcoin - } - - if (version !== network.bip32.private && - version !== network.bip32.public) throw new Error('Invalid network version') - - // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ... - var depth = buffer[4] - - // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) - var parentFingerprint = buffer.readUInt32BE(5) - if (depth === 0) { - if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint') - } - - // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. - // This is encoded in MSB order. (0x00000000 if master key) - var index = buffer.readUInt32BE(9) - if (depth === 0 && index !== 0) throw new Error('Invalid index') - - // 32 bytes: the chain code - var chainCode = buffer.slice(13, 45) - var keyPair - - // 33 bytes: private key data (0x00 + k) - if (version === network.bip32.private) { - if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key') - - var d = BigInteger.fromBuffer(buffer.slice(46, 78)) - keyPair = new ECPair(d, null, { network: network }) - - // 33 bytes: public key data (0x02 + X or 0x03 + X) - } else { - var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78)) - // Q.compressed is assumed, if somehow this assumption is broken, `new HDNode` will throw - - // Verify that the X coordinate in the public point corresponds to a point on the curve. - // If not, the extended public key is invalid. - curve.validate(Q) - - keyPair = new ECPair(null, Q, { network: network }) - } - - var hd = new HDNode(keyPair, chainCode) - hd.depth = depth - hd.index = index - hd.parentFingerprint = parentFingerprint - - return hd -} - -HDNode.prototype.getAddress = function () { - return this.keyPair.getAddress() -} - -HDNode.prototype.getIdentifier = function () { - return bcrypto.hash160(this.keyPair.getPublicKeyBuffer()) -} - -HDNode.prototype.getFingerprint = function () { - return this.getIdentifier().slice(0, 4) -} - -HDNode.prototype.getNetwork = function () { - return this.keyPair.getNetwork() -} - -HDNode.prototype.getPublicKeyBuffer = function () { - return this.keyPair.getPublicKeyBuffer() -} - -HDNode.prototype.neutered = function () { - var neuteredKeyPair = new ECPair(null, this.keyPair.Q, { - network: this.keyPair.network - }) - - var neutered = new HDNode(neuteredKeyPair, this.chainCode) - neutered.depth = this.depth - neutered.index = this.index - neutered.parentFingerprint = this.parentFingerprint - - return neutered -} - -HDNode.prototype.sign = function (hash) { - return this.keyPair.sign(hash) -} - -HDNode.prototype.verify = function (hash, signature) { - return this.keyPair.verify(hash, signature) -} - -HDNode.prototype.toBase58 = function (__isPrivate) { - if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0') - - // Version - var network = this.keyPair.network - var version = (!this.isNeutered()) ? network.bip32.private : network.bip32.public - var buffer = Buffer.allocUnsafe(78) - - // 4 bytes: version bytes - buffer.writeUInt32BE(version, 0) - - // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, .... - buffer.writeUInt8(this.depth, 4) - - // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) - buffer.writeUInt32BE(this.parentFingerprint, 5) - - // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. - // This is encoded in big endian. (0x00000000 if master key) - buffer.writeUInt32BE(this.index, 9) - - // 32 bytes: the chain code - this.chainCode.copy(buffer, 13) - - // 33 bytes: the public key or private key data - if (!this.isNeutered()) { - // 0x00 + k for private keys - buffer.writeUInt8(0, 45) - this.keyPair.d.toBuffer(32).copy(buffer, 46) - - // 33 bytes: the public key - } else { - // X9.62 encoding for public keys - this.keyPair.getPublicKeyBuffer().copy(buffer, 45) - } - - return base58check.encode(buffer) -} - -// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions -HDNode.prototype.derive = function (index) { - typeforce(types.UInt32, index) - - var isHardened = index >= HDNode.HIGHEST_BIT - var data = Buffer.allocUnsafe(37) - - // Hardened child - if (isHardened) { - if (this.isNeutered()) throw new TypeError('Could not derive hardened child key') - - // data = 0x00 || ser256(kpar) || ser32(index) - data[0] = 0x00 - this.keyPair.d.toBuffer(32).copy(data, 1) - data.writeUInt32BE(index, 33) - - // Normal child - } else { - // data = serP(point(kpar)) || ser32(index) - // = serP(Kpar) || ser32(index) - this.keyPair.getPublicKeyBuffer().copy(data, 0) - data.writeUInt32BE(index, 33) - } - - var I = createHmac('sha512', this.chainCode).update(data).digest() - var IL = I.slice(0, 32) - var IR = I.slice(32) - - var pIL = BigInteger.fromBuffer(IL) - - // In case parse256(IL) >= n, proceed with the next value for i - if (pIL.compareTo(curve.n) >= 0) { - return this.derive(index + 1) - } - - // Private parent key -> private child key - var derivedKeyPair - if (!this.isNeutered()) { - // ki = parse256(IL) + kpar (mod n) - var ki = pIL.add(this.keyPair.d).mod(curve.n) - - // In case ki == 0, proceed with the next value for i - if (ki.signum() === 0) { - return this.derive(index + 1) - } - - derivedKeyPair = new ECPair(ki, null, { - network: this.keyPair.network - }) - - // Public parent key -> public child key - } else { - // Ki = point(parse256(IL)) + Kpar - // = G*IL + Kpar - var Ki = curve.G.multiply(pIL).add(this.keyPair.Q) - - // In case Ki is the point at infinity, proceed with the next value for i - if (curve.isInfinity(Ki)) { - return this.derive(index + 1) - } - - derivedKeyPair = new ECPair(null, Ki, { - network: this.keyPair.network - }) - } - - var hd = new HDNode(derivedKeyPair, IR) - hd.depth = this.depth + 1 - hd.index = index - hd.parentFingerprint = this.getFingerprint().readUInt32BE(0) - - return hd -} - -HDNode.prototype.deriveHardened = function (index) { - typeforce(types.UInt31, index) - - // Only derives hardened private keys by default - return this.derive(index + HDNode.HIGHEST_BIT) -} - -// Private === not neutered -// Public === neutered -HDNode.prototype.isNeutered = function () { - return !(this.keyPair.d) -} - -HDNode.prototype.derivePath = function (path) { - typeforce(types.BIP32Path, path) - - var splitPath = path.split('/') - if (splitPath[0] === 'm') { - if (this.parentFingerprint) { - throw new Error('Not a master node') - } - - splitPath = splitPath.slice(1) - } - - return splitPath.reduce(function (prevHd, indexStr) { - var index - if (indexStr.slice(-1) === "'") { - index = parseInt(indexStr.slice(0, -1), 10) - return prevHd.deriveHardened(index) - } else { - index = parseInt(indexStr, 10) - return prevHd.derive(index) - } - }, this) -} - -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){ -var script = require('./script') - -var templates = require('./templates') -for (var key in templates) { - script[key] = templates[key] -} - -module.exports = { - bufferutils: require('./bufferutils'), // TODO: remove in 4.0.0 - - Block: require('./block'), - ECPair: require('./ecpair'), - ECSignature: require('./ecsignature'), - HDNode: require('./hdnode'), - Transaction: require('./transaction'), - TransactionBuilder: require('./transaction_builder'), - - address: require('./address'), - crypto: require('./crypto'), - networks: require('./networks'), - opcodes: require('bitcoin-ops'), - script: script -} - -},{"./address":44,"./block":45,"./bufferutils":46,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./hdnode":51,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./transaction_builder":79,"bitcoin-ops":42}],53:[function(require,module,exports){ -// https://en.bitcoin.it/wiki/List_of_address_prefixes -// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731 - -module.exports = { - bitcoin: { - messagePrefix: '\x18Bitcoin Signed Message:\n', - bech32: 'bc', - bip32: { - public: 0x0488b21e, - private: 0x0488ade4 - }, - pubKeyHash: 0x00, - scriptHash: 0x05, - wif: 0x80 - }, - testnet: { - messagePrefix: '\x18Bitcoin Signed Message:\n', - bech32: 'tb', - bip32: { - public: 0x043587cf, - private: 0x04358394 - }, - pubKeyHash: 0x6f, - scriptHash: 0xc4, - wif: 0xef - }, - litecoin: { - messagePrefix: '\x19Litecoin Signed Message:\n', - bip32: { - public: 0x019da462, - private: 0x019d9cfe - }, - pubKeyHash: 0x30, - scriptHash: 0x32, - wif: 0xb0 - } -} - -},{}],54:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var bip66 = require('bip66') -var pushdata = require('pushdata-bitcoin') -var typeforce = require('typeforce') -var types = require('./types') -var scriptNumber = require('./script_number') - -var OPS = require('bitcoin-ops') -var REVERSE_OPS = require('bitcoin-ops/map') -var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 - -function isOPInt (value) { - return types.Number(value) && - ((value === OPS.OP_0) || - (value >= OPS.OP_1 && value <= OPS.OP_16) || - (value === OPS.OP_1NEGATE)) -} - -function isPushOnlyChunk (value) { - return types.Buffer(value) || isOPInt(value) -} - -function isPushOnly (value) { - return types.Array(value) && value.every(isPushOnlyChunk) -} - -function asMinimalOP (buffer) { - if (buffer.length === 0) return OPS.OP_0 - if (buffer.length !== 1) return - if (buffer[0] >= 1 && buffer[0] <= 16) return OP_INT_BASE + buffer[0] - if (buffer[0] === 0x81) return OPS.OP_1NEGATE -} - -function compile (chunks) { - // TODO: remove me - if (Buffer.isBuffer(chunks)) return chunks - - typeforce(types.Array, chunks) - - var bufferSize = chunks.reduce(function (accum, chunk) { - // data chunk - if (Buffer.isBuffer(chunk)) { - // adhere to BIP62.3, minimal push policy - if (chunk.length === 1 && asMinimalOP(chunk) !== undefined) { - return accum + 1 - } - - return accum + pushdata.encodingLength(chunk.length) + chunk.length - } - - // opcode - return accum + 1 - }, 0.0) - - var buffer = Buffer.allocUnsafe(bufferSize) - var offset = 0 - - chunks.forEach(function (chunk) { - // data chunk - if (Buffer.isBuffer(chunk)) { - // adhere to BIP62.3, minimal push policy - var opcode = asMinimalOP(chunk) - if (opcode !== undefined) { - buffer.writeUInt8(opcode, offset) - offset += 1 - return - } - - offset += pushdata.encode(buffer, chunk.length, offset) - chunk.copy(buffer, offset) - offset += chunk.length - - // opcode - } else { - buffer.writeUInt8(chunk, offset) - offset += 1 - } - }) - - if (offset !== buffer.length) throw new Error('Could not decode chunks') - return buffer -} - -function decompile (buffer) { - // TODO: remove me - if (types.Array(buffer)) return buffer - - typeforce(types.Buffer, buffer) - - var chunks = [] - var i = 0 - - while (i < buffer.length) { - var opcode = buffer[i] - - // data chunk - if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) { - var d = pushdata.decode(buffer, i) - - // did reading a pushDataInt fail? empty script - if (d === null) return [] - i += d.size - - // attempt to read too much data? empty script - if (i + d.number > buffer.length) return [] - - var data = buffer.slice(i, i + d.number) - i += d.number - - // decompile minimally - var op = asMinimalOP(data) - if (op !== undefined) { - chunks.push(op) - } else { - chunks.push(data) - } - - // opcode - } else { - chunks.push(opcode) - - i += 1 - } - } - - return chunks -} - -function toASM (chunks) { - if (Buffer.isBuffer(chunks)) { - chunks = decompile(chunks) - } - - return chunks.map(function (chunk) { - // data? - if (Buffer.isBuffer(chunk)) { - var op = asMinimalOP(chunk) - if (op === undefined) return chunk.toString('hex') - chunk = op - } - - // opcode! - return REVERSE_OPS[chunk] - }).join(' ') -} - -function fromASM (asm) { - typeforce(types.String, asm) - - return compile(asm.split(' ').map(function (chunkStr) { - // opcode? - if (OPS[chunkStr] !== undefined) return OPS[chunkStr] - typeforce(types.Hex, chunkStr) - - // data! - return Buffer.from(chunkStr, 'hex') - })) -} - -function toStack (chunks) { - chunks = decompile(chunks) - typeforce(isPushOnly, chunks) - - return chunks.map(function (op) { - if (Buffer.isBuffer(op)) return op - if (op === OPS.OP_0) return Buffer.allocUnsafe(0) - - return scriptNumber.encode(op - OP_INT_BASE) - }) -} - -function isCanonicalPubKey (buffer) { - if (!Buffer.isBuffer(buffer)) return false - if (buffer.length < 33) return false - - switch (buffer[0]) { - case 0x02: - case 0x03: - return buffer.length === 33 - case 0x04: - return buffer.length === 65 - } - - return false -} - -function isDefinedHashType (hashType) { - var hashTypeMod = hashType & ~0x80 - -// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE - return hashTypeMod > 0x00 && hashTypeMod < 0x04 -} - -function isCanonicalSignature (buffer) { - if (!Buffer.isBuffer(buffer)) return false - if (!isDefinedHashType(buffer[buffer.length - 1])) return false - - return bip66.check(buffer.slice(0, -1)) -} - -module.exports = { - compile: compile, - decompile: decompile, - fromASM: fromASM, - toASM: toASM, - toStack: toStack, - - number: require('./script_number'), - - isCanonicalPubKey: isCanonicalPubKey, - isCanonicalSignature: isCanonicalSignature, - isPushOnly: isPushOnly, - 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){ -var Buffer = require('safe-buffer').Buffer - -function decode (buffer, maxLength, minimal) { - maxLength = maxLength || 4 - minimal = minimal === undefined ? true : minimal - - var length = buffer.length - if (length === 0) return 0 - if (length > maxLength) throw new TypeError('Script number overflow') - if (minimal) { - if ((buffer[length - 1] & 0x7f) === 0) { - if (length <= 1 || (buffer[length - 2] & 0x80) === 0) throw new Error('Non-minimally encoded script number') - } - } - - // 40-bit - if (length === 5) { - var a = buffer.readUInt32LE(0) - var b = buffer.readUInt8(4) - - if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a) - return (b * 0x100000000) + a - } - - var result = 0 - - // 32-bit / 24-bit / 16-bit / 8-bit - for (var i = 0; i < length; ++i) { - result |= buffer[i] << (8 * i) - } - - if (buffer[length - 1] & 0x80) return -(result & ~(0x80 << (8 * (length - 1)))) - return result -} - -function scriptNumSize (i) { - return i > 0x7fffffff ? 5 - : i > 0x7fffff ? 4 - : i > 0x7fff ? 3 - : i > 0x7f ? 2 - : i > 0x00 ? 1 - : 0 -} - -function encode (number) { - var value = Math.abs(number) - var size = scriptNumSize(value) - var buffer = Buffer.allocUnsafe(size) - var negative = number < 0 - - for (var i = 0; i < size; ++i) { - buffer.writeUInt8(value & 0xff, i) - value >>= 8 - } - - if (buffer[size - 1] & 0x80) { - buffer.writeUInt8(negative ? 0x80 : 0x00, size - 1) - } else if (negative) { - buffer[size - 1] |= 0x80 - } - - return buffer -} - -module.exports = { - decode: decode, - encode: encode -} - -},{"safe-buffer":128}],56:[function(require,module,exports){ -var decompile = require('../script').decompile -var multisig = require('./multisig') -var nullData = require('./nulldata') -var pubKey = require('./pubkey') -var pubKeyHash = require('./pubkeyhash') -var scriptHash = require('./scripthash') -var witnessPubKeyHash = require('./witnesspubkeyhash') -var witnessScriptHash = require('./witnessscripthash') -var witnessCommitment = require('./witnesscommitment') - -var types = { - MULTISIG: 'multisig', - NONSTANDARD: 'nonstandard', - NULLDATA: 'nulldata', - P2PK: 'pubkey', - P2PKH: 'pubkeyhash', - P2SH: 'scripthash', - P2WPKH: 'witnesspubkeyhash', - P2WSH: 'witnessscripthash', - WITNESS_COMMITMENT: 'witnesscommitment' -} - -function classifyOutput (script) { - if (witnessPubKeyHash.output.check(script)) return types.P2WPKH - if (witnessScriptHash.output.check(script)) return types.P2WSH - if (pubKeyHash.output.check(script)) return types.P2PKH - if (scriptHash.output.check(script)) return types.P2SH - - // XXX: optimization, below functions .decompile before use - var chunks = decompile(script) - if (multisig.output.check(chunks)) return types.MULTISIG - if (pubKey.output.check(chunks)) return types.P2PK - if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT - if (nullData.output.check(chunks)) return types.NULLDATA - - return types.NONSTANDARD -} - -function classifyInput (script, allowIncomplete) { - // XXX: optimization, below functions .decompile before use - var chunks = decompile(script) - - if (pubKeyHash.input.check(chunks)) return types.P2PKH - if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH - if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG - if (pubKey.input.check(chunks)) return types.P2PK - - return types.NONSTANDARD -} - -function classifyWitness (script, allowIncomplete) { - // XXX: optimization, below functions .decompile before use - var chunks = decompile(script) - - if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH - if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH - - return types.NONSTANDARD -} - -module.exports = { - classifyInput: classifyInput, - classifyOutput: classifyOutput, - classifyWitness: classifyWitness, - multisig: multisig, - nullData: nullData, - pubKey: pubKey, - pubKeyHash: pubKeyHash, - scriptHash: scriptHash, - witnessPubKeyHash: witnessPubKeyHash, - witnessScriptHash: witnessScriptHash, - witnessCommitment: witnessCommitment, - types: types -} - -},{"../script":54,"./multisig":57,"./nulldata":60,"./pubkey":61,"./pubkeyhash":64,"./scripthash":67,"./witnesscommitment":70,"./witnesspubkeyhash":72,"./witnessscripthash":75}],57:[function(require,module,exports){ -module.exports = { - input: require('./input'), - output: require('./output') -} - -},{"./input":58,"./output":59}],58:[function(require,module,exports){ -// OP_0 [signatures ...] - -var Buffer = require('safe-buffer').Buffer -var bscript = require('../../script') -var p2mso = require('./output') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function partialSignature (value) { - return value === OPS.OP_0 || bscript.isCanonicalSignature(value) -} - -function check (script, allowIncomplete) { - var chunks = bscript.decompile(script) - if (chunks.length < 2) return false - if (chunks[0] !== OPS.OP_0) return false - - if (allowIncomplete) { - return chunks.slice(1).every(partialSignature) - } - - return chunks.slice(1).every(bscript.isCanonicalSignature) -} -check.toJSON = function () { return 'multisig input' } - -var EMPTY_BUFFER = Buffer.allocUnsafe(0) - -function encodeStack (signatures, scriptPubKey) { - typeforce([partialSignature], signatures) - - if (scriptPubKey) { - var scriptData = p2mso.decode(scriptPubKey) - - if (signatures.length < scriptData.m) { - throw new TypeError('Not enough signatures provided') - } - - if (signatures.length > scriptData.pubKeys.length) { - throw new TypeError('Too many signatures provided') - } - } - - return [].concat(EMPTY_BUFFER, signatures.map(function (sig) { - if (sig === OPS.OP_0) { - return EMPTY_BUFFER - } - return sig - })) -} - -function encode (signatures, scriptPubKey) { - return bscript.compile(encodeStack(signatures, scriptPubKey)) -} - -function decodeStack (stack, allowIncomplete) { - typeforce(check, stack, allowIncomplete) - return stack.slice(1) -} - -function decode (buffer, allowIncomplete) { - var stack = bscript.decompile(buffer) - return decodeStack(stack, allowIncomplete) -} - -module.exports = { - check: check, - decode: decode, - decodeStack: decodeStack, - encode: encode, - encodeStack: encodeStack -} - -},{"../../script":54,"./output":59,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],59:[function(require,module,exports){ -// m [pubKeys ...] n OP_CHECKMULTISIG - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') -var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 - -function check (script, allowIncomplete) { - var chunks = bscript.decompile(script) - - if (chunks.length < 4) return false - if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false - if (!types.Number(chunks[0])) return false - if (!types.Number(chunks[chunks.length - 2])) return false - var m = chunks[0] - OP_INT_BASE - var n = chunks[chunks.length - 2] - OP_INT_BASE - - if (m <= 0) return false - if (n > 16) return false - if (m > n) return false - if (n !== chunks.length - 3) return false - if (allowIncomplete) return true - - var keys = chunks.slice(1, -2) - return keys.every(bscript.isCanonicalPubKey) -} -check.toJSON = function () { return 'multi-sig output' } - -function encode (m, pubKeys) { - typeforce({ - m: types.Number, - pubKeys: [bscript.isCanonicalPubKey] - }, { - m: m, - pubKeys: pubKeys - }) - - var n = pubKeys.length - if (n < m) throw new TypeError('Not enough pubKeys provided') - - return bscript.compile([].concat( - OP_INT_BASE + m, - pubKeys, - OP_INT_BASE + n, - OPS.OP_CHECKMULTISIG - )) -} - -function decode (buffer, allowIncomplete) { - var chunks = bscript.decompile(buffer) - typeforce(check, chunks, allowIncomplete) - - return { - m: chunks[0] - OP_INT_BASE, - pubKeys: chunks.slice(1, -2) - } -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],60:[function(require,module,exports){ -// OP_RETURN {data} - -var bscript = require('../script') -var types = require('../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length > 1 && - buffer[0] === OPS.OP_RETURN -} -check.toJSON = function () { return 'null data output' } - -function encode (data) { - typeforce(types.Buffer, data) - - return bscript.compile([OPS.OP_RETURN, data]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return buffer.slice(2) -} - -module.exports = { - output: { - check: check, - decode: decode, - encode: encode - } -} - -},{"../script":54,"../types":80,"bitcoin-ops":42,"typeforce":139}],61:[function(require,module,exports){ -arguments[4][57][0].apply(exports,arguments) -},{"./input":62,"./output":63,"dup":57}],62:[function(require,module,exports){ -// {signature} - -var bscript = require('../../script') -var typeforce = require('typeforce') - -function check (script) { - var chunks = bscript.decompile(script) - - return chunks.length === 1 && - bscript.isCanonicalSignature(chunks[0]) -} -check.toJSON = function () { return 'pubKey input' } - -function encodeStack (signature) { - typeforce(bscript.isCanonicalSignature, signature) - return [signature] -} - -function encode (signature) { - return bscript.compile(encodeStack(signature)) -} - -function decodeStack (stack) { - typeforce(check, stack) - return stack[0] -} - -function decode (buffer) { - var stack = bscript.decompile(buffer) - return decodeStack(stack) -} - -module.exports = { - check: check, - decode: decode, - decodeStack: decodeStack, - encode: encode, - encodeStack: encodeStack -} - -},{"../../script":54,"typeforce":139}],63:[function(require,module,exports){ -// {pubKey} OP_CHECKSIG - -var bscript = require('../../script') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var chunks = bscript.decompile(script) - - return chunks.length === 2 && - bscript.isCanonicalPubKey(chunks[0]) && - chunks[1] === OPS.OP_CHECKSIG -} -check.toJSON = function () { return 'pubKey output' } - -function encode (pubKey) { - typeforce(bscript.isCanonicalPubKey, pubKey) - - return bscript.compile([pubKey, OPS.OP_CHECKSIG]) -} - -function decode (buffer) { - var chunks = bscript.decompile(buffer) - typeforce(check, chunks) - - return chunks[0] -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"bitcoin-ops":42,"typeforce":139}],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} - -var bscript = require('../../script') -var typeforce = require('typeforce') - -function check (script) { - var chunks = bscript.decompile(script) - - return chunks.length === 2 && - bscript.isCanonicalSignature(chunks[0]) && - bscript.isCanonicalPubKey(chunks[1]) -} -check.toJSON = function () { return 'pubKeyHash input' } - -function encodeStack (signature, pubKey) { - typeforce({ - signature: bscript.isCanonicalSignature, - pubKey: bscript.isCanonicalPubKey - }, { - signature: signature, - pubKey: pubKey - }) - - return [signature, pubKey] -} - -function encode (signature, pubKey) { - return bscript.compile(encodeStack(signature, pubKey)) -} - -function decodeStack (stack) { - typeforce(check, stack) - - return { - signature: stack[0], - pubKey: stack[1] - } -} - -function decode (buffer) { - var stack = bscript.decompile(buffer) - return decodeStack(stack) -} - -module.exports = { - check: check, - decode: decode, - decodeStack: decodeStack, - encode: encode, - encodeStack: encodeStack -} - -},{"../../script":54,"typeforce":139}],66:[function(require,module,exports){ -// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length === 25 && - buffer[0] === OPS.OP_DUP && - buffer[1] === OPS.OP_HASH160 && - buffer[2] === 0x14 && - buffer[23] === OPS.OP_EQUALVERIFY && - buffer[24] === OPS.OP_CHECKSIG -} -check.toJSON = function () { return 'pubKeyHash output' } - -function encode (pubKeyHash) { - typeforce(types.Hash160bit, pubKeyHash) - - return bscript.compile([ - OPS.OP_DUP, - OPS.OP_HASH160, - pubKeyHash, - OPS.OP_EQUALVERIFY, - OPS.OP_CHECKSIG - ]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return buffer.slice(3, 23) -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],67:[function(require,module,exports){ -arguments[4][57][0].apply(exports,arguments) -},{"./input":68,"./output":69,"dup":57}],68:[function(require,module,exports){ -// {serialized scriptPubKey script} - -var Buffer = require('safe-buffer').Buffer -var bscript = require('../../script') -var typeforce = require('typeforce') - -var p2ms = require('../multisig/') -var p2pk = require('../pubkey/') -var p2pkh = require('../pubkeyhash/') -var p2wpkho = require('../witnesspubkeyhash/output') -var p2wsho = require('../witnessscripthash/output') - -function check (script, allowIncomplete) { - var chunks = bscript.decompile(script) - if (chunks.length < 1) return false - - var lastChunk = chunks[chunks.length - 1] - if (!Buffer.isBuffer(lastChunk)) return false - - var scriptSigChunks = bscript.decompile(bscript.compile(chunks.slice(0, -1))) - var redeemScriptChunks = bscript.decompile(lastChunk) - - // is redeemScript a valid script? - if (redeemScriptChunks.length === 0) return false - - // is redeemScriptSig push only? - if (!bscript.isPushOnly(scriptSigChunks)) return false - - // is witness? - if (chunks.length === 1) { - return p2wsho.check(redeemScriptChunks) || - p2wpkho.check(redeemScriptChunks) - } - - // match types - if (p2pkh.input.check(scriptSigChunks) && - p2pkh.output.check(redeemScriptChunks)) return true - - if (p2ms.input.check(scriptSigChunks, allowIncomplete) && - p2ms.output.check(redeemScriptChunks)) return true - - if (p2pk.input.check(scriptSigChunks) && - p2pk.output.check(redeemScriptChunks)) return true - - return false -} -check.toJSON = function () { return 'scriptHash input' } - -function encodeStack (redeemScriptStack, redeemScript) { - var serializedScriptPubKey = bscript.compile(redeemScript) - - return [].concat(redeemScriptStack, serializedScriptPubKey) -} - -function encode (redeemScriptSig, redeemScript) { - var redeemScriptStack = bscript.decompile(redeemScriptSig) - - return bscript.compile(encodeStack(redeemScriptStack, redeemScript)) -} - -function decodeStack (stack) { - typeforce(check, stack) - - return { - redeemScriptStack: stack.slice(0, -1), - redeemScript: stack[stack.length - 1] - } -} - -function decode (buffer) { - var stack = bscript.decompile(buffer) - var result = decodeStack(stack) - result.redeemScriptSig = bscript.compile(result.redeemScriptStack) - delete result.redeemScriptStack - return result -} - -module.exports = { - check: check, - decode: decode, - decodeStack: decodeStack, - encode: encode, - 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){ -// OP_HASH160 {scriptHash} OP_EQUAL - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length === 23 && - buffer[0] === OPS.OP_HASH160 && - buffer[1] === 0x14 && - buffer[22] === OPS.OP_EQUAL -} -check.toJSON = function () { return 'scriptHash output' } - -function encode (scriptHash) { - typeforce(types.Hash160bit, scriptHash) - - return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return buffer.slice(2, 22) -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],70:[function(require,module,exports){ -module.exports = { - output: require('./output') -} - -},{"./output":71}],71:[function(require,module,exports){ -// OP_RETURN {aa21a9ed} {commitment} - -var Buffer = require('safe-buffer').Buffer -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -var HEADER = Buffer.from('aa21a9ed', 'hex') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length > 37 && - buffer[0] === OPS.OP_RETURN && - buffer[1] === 0x24 && - buffer.slice(2, 6).equals(HEADER) -} - -check.toJSON = function () { return 'Witness commitment output' } - -function encode (commitment) { - typeforce(types.Hash256bit, commitment) - - var buffer = Buffer.allocUnsafe(36) - HEADER.copy(buffer, 0) - commitment.copy(buffer, 4) - - return bscript.compile([OPS.OP_RETURN, buffer]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return bscript.decompile(buffer)[1].slice(4, 36) -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],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} - -var bscript = require('../../script') -var typeforce = require('typeforce') - -function isCompressedCanonicalPubKey (pubKey) { - return bscript.isCanonicalPubKey(pubKey) && pubKey.length === 33 -} - -function check (script) { - var chunks = bscript.decompile(script) - - return chunks.length === 2 && - bscript.isCanonicalSignature(chunks[0]) && - isCompressedCanonicalPubKey(chunks[1]) -} -check.toJSON = function () { return 'witnessPubKeyHash input' } - -function encodeStack (signature, pubKey) { - typeforce({ - signature: bscript.isCanonicalSignature, - pubKey: isCompressedCanonicalPubKey - }, { - signature: signature, - pubKey: pubKey - }) - - return [signature, pubKey] -} - -function decodeStack (stack) { - typeforce(check, stack) - - return { - signature: stack[0], - pubKey: stack[1] - } -} - -module.exports = { - check: check, - decodeStack: decodeStack, - encodeStack: encodeStack -} - -},{"../../script":54,"typeforce":139}],74:[function(require,module,exports){ -// OP_0 {pubKeyHash} - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length === 22 && - buffer[0] === OPS.OP_0 && - buffer[1] === 0x14 -} -check.toJSON = function () { return 'Witness pubKeyHash output' } - -function encode (pubKeyHash) { - typeforce(types.Hash160bit, pubKeyHash) - - return bscript.compile([OPS.OP_0, pubKeyHash]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return buffer.slice(2) -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],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){ -// {serialized scriptPubKey script} - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') - -var p2ms = require('../multisig/') -var p2pk = require('../pubkey/') -var p2pkh = require('../pubkeyhash/') - -function check (chunks, allowIncomplete) { - typeforce(types.Array, chunks) - if (chunks.length < 1) return false - - var witnessScript = chunks[chunks.length - 1] - if (!Buffer.isBuffer(witnessScript)) return false - - var witnessScriptChunks = bscript.decompile(witnessScript) - - // is witnessScript a valid script? - if (witnessScriptChunks.length === 0) return false - - var witnessRawScriptSig = bscript.compile(chunks.slice(0, -1)) - - // match types - if (p2pkh.input.check(witnessRawScriptSig) && - p2pkh.output.check(witnessScriptChunks)) return true - - if (p2ms.input.check(witnessRawScriptSig, allowIncomplete) && - p2ms.output.check(witnessScriptChunks)) return true - - if (p2pk.input.check(witnessRawScriptSig) && - p2pk.output.check(witnessScriptChunks)) return true - - return false -} -check.toJSON = function () { return 'witnessScriptHash input' } - -function encodeStack (witnessData, witnessScript) { - typeforce({ - witnessData: [types.Buffer], - witnessScript: types.Buffer - }, { - witnessData: witnessData, - witnessScript: witnessScript - }) - - return [].concat(witnessData, witnessScript) -} - -function decodeStack (chunks) { - typeforce(check, chunks) - return { - witnessData: chunks.slice(0, -1), - witnessScript: chunks[chunks.length - 1] - } -} - -module.exports = { - check: check, - decodeStack: decodeStack, - encodeStack: encodeStack -} - -}).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){ -// OP_0 {scriptHash} - -var bscript = require('../../script') -var types = require('../../types') -var typeforce = require('typeforce') -var OPS = require('bitcoin-ops') - -function check (script) { - var buffer = bscript.compile(script) - - return buffer.length === 34 && - buffer[0] === OPS.OP_0 && - buffer[1] === 0x20 -} -check.toJSON = function () { return 'Witness scriptHash output' } - -function encode (scriptHash) { - typeforce(types.Hash256bit, scriptHash) - - return bscript.compile([OPS.OP_0, scriptHash]) -} - -function decode (buffer) { - typeforce(check, buffer) - - return buffer.slice(2) -} - -module.exports = { - check: check, - decode: decode, - encode: encode -} - -},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],78:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var bcrypto = require('./crypto') -var bscript = require('./script') -var bufferutils = require('./bufferutils') -var opcodes = require('bitcoin-ops') -var typeforce = require('typeforce') -var types = require('./types') -var varuint = require('varuint-bitcoin') - -function varSliceSize (someScript) { - var length = someScript.length - - return varuint.encodingLength(length) + length -} - -function vectorSize (someVector) { - var length = someVector.length - - return varuint.encodingLength(length) + someVector.reduce(function (sum, witness) { - return sum + varSliceSize(witness) - }, 0) -} - -function Transaction () { - this.version = 1 - this.locktime = 0 - this.ins = [] - this.outs = [] -} - -Transaction.DEFAULT_SEQUENCE = 0xffffffff -Transaction.SIGHASH_ALL = 0x01 -Transaction.SIGHASH_NONE = 0x02 -Transaction.SIGHASH_SINGLE = 0x03 -Transaction.SIGHASH_ANYONECANPAY = 0x80 -Transaction.ADVANCED_TRANSACTION_MARKER = 0x00 -Transaction.ADVANCED_TRANSACTION_FLAG = 0x01 - -var EMPTY_SCRIPT = Buffer.allocUnsafe(0) -var EMPTY_WITNESS = [] -var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') -var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex') -var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex') -var BLANK_OUTPUT = { - script: EMPTY_SCRIPT, - valueBuffer: VALUE_UINT64_MAX -} - -Transaction.fromBuffer = function (buffer, __noStrict) { - var offset = 0 - function readSlice (n) { - offset += n - return buffer.slice(offset - n, offset) - } - - function readUInt32 () { - var i = buffer.readUInt32LE(offset) - offset += 4 - return i - } - - function readInt32 () { - var i = buffer.readInt32LE(offset) - offset += 4 - return i - } - - function readUInt64 () { - var i = bufferutils.readUInt64LE(buffer, offset) - offset += 8 - return i - } - - function readVarInt () { - var vi = varuint.decode(buffer, offset) - offset += varuint.decode.bytes - return vi - } - - function readVarSlice () { - return readSlice(readVarInt()) - } - - function readVector () { - var count = readVarInt() - var vector = [] - for (var i = 0; i < count; i++) vector.push(readVarSlice()) - return vector - } - - var tx = new Transaction() - tx.version = readInt32() - - var marker = buffer.readUInt8(offset) - var flag = buffer.readUInt8(offset + 1) - - var hasWitnesses = false - if (marker === Transaction.ADVANCED_TRANSACTION_MARKER && - flag === Transaction.ADVANCED_TRANSACTION_FLAG) { - offset += 2 - hasWitnesses = true - } - - var vinLen = readVarInt() - for (var i = 0; i < vinLen; ++i) { - tx.ins.push({ - hash: readSlice(32), - index: readUInt32(), - script: readVarSlice(), - sequence: readUInt32(), - witness: EMPTY_WITNESS - }) - } - - var voutLen = readVarInt() - for (i = 0; i < voutLen; ++i) { - tx.outs.push({ - value: readUInt64(), - script: readVarSlice() - }) - } - - if (hasWitnesses) { - for (i = 0; i < vinLen; ++i) { - tx.ins[i].witness = readVector() - } - - // was this pointless? - if (!tx.hasWitnesses()) throw new Error('Transaction has superfluous witness data') - } - - tx.locktime = readUInt32() - - if (__noStrict) return tx - if (offset !== buffer.length) throw new Error('Transaction has unexpected data') - - return tx -} - -Transaction.fromHex = function (hex) { - return Transaction.fromBuffer(Buffer.from(hex, 'hex')) -} - -Transaction.isCoinbaseHash = function (buffer) { - typeforce(types.Hash256bit, buffer) - for (var i = 0; i < 32; ++i) { - if (buffer[i] !== 0) return false - } - return true -} - -Transaction.prototype.isCoinbase = function () { - return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash) -} - -Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) { - typeforce(types.tuple( - types.Hash256bit, - types.UInt32, - types.maybe(types.UInt32), - types.maybe(types.Buffer) - ), arguments) - - if (types.Null(sequence)) { - sequence = Transaction.DEFAULT_SEQUENCE - } - - // Add the input and return the input's index - return (this.ins.push({ - hash: hash, - index: index, - script: scriptSig || EMPTY_SCRIPT, - sequence: sequence, - witness: EMPTY_WITNESS - }) - 1) -} - -Transaction.prototype.addOutput = function (scriptPubKey, value) { - typeforce(types.tuple(types.Buffer, types.Satoshi), arguments) - - // Add the output and return the output's index - return (this.outs.push({ - script: scriptPubKey, - value: value - }) - 1) -} - -Transaction.prototype.hasWitnesses = function () { - return this.ins.some(function (x) { - return x.witness.length !== 0 - }) -} - -Transaction.prototype.weight = function () { - var base = this.__byteLength(false) - var total = this.__byteLength(true) - return base * 3 + total -} - -Transaction.prototype.virtualSize = function () { - return Math.ceil(this.weight() / 4) -} - -Transaction.prototype.byteLength = function () { - return this.__byteLength(true) -} - -Transaction.prototype.__byteLength = function (__allowWitness) { - var hasWitnesses = __allowWitness && this.hasWitnesses() - - return ( - (hasWitnesses ? 10 : 8) + - varuint.encodingLength(this.ins.length) + - varuint.encodingLength(this.outs.length) + - this.ins.reduce(function (sum, input) { return sum + 40 + varSliceSize(input.script) }, 0) + - this.outs.reduce(function (sum, output) { return sum + 8 + varSliceSize(output.script) }, 0) + - (hasWitnesses ? this.ins.reduce(function (sum, input) { return sum + vectorSize(input.witness) }, 0) : 0) - ) -} - -Transaction.prototype.clone = function () { - var newTx = new Transaction() - newTx.version = this.version - newTx.locktime = this.locktime - - newTx.ins = this.ins.map(function (txIn) { - return { - hash: txIn.hash, - index: txIn.index, - script: txIn.script, - sequence: txIn.sequence, - witness: txIn.witness - } - }) - - newTx.outs = this.outs.map(function (txOut) { - return { - script: txOut.script, - value: txOut.value - } - }) - - return newTx -} - -/** - * Hash transaction for signing a specific input. - * - * Bitcoin uses a different hash for each signed transaction input. - * This method copies the transaction, makes the necessary changes based on the - * hashType, and then hashes the result. - * This hash can then be used to sign the provided transaction input. - */ -Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) { - typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments) - - // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29 - if (inIndex >= this.ins.length) return ONE - - // ignore OP_CODESEPARATOR - var ourScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) { - return x !== opcodes.OP_CODESEPARATOR - })) - - var txTmp = this.clone() - - // SIGHASH_NONE: ignore all outputs? (wildcard payee) - if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) { - txTmp.outs = [] - - // ignore sequence numbers (except at inIndex) - txTmp.ins.forEach(function (input, i) { - if (i === inIndex) return - - input.sequence = 0 - }) - - // SIGHASH_SINGLE: ignore all outputs, except at the same index? - } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) { - // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60 - if (inIndex >= this.outs.length) return ONE - - // truncate outputs after - txTmp.outs.length = inIndex + 1 - - // "blank" outputs before - for (var i = 0; i < inIndex; i++) { - txTmp.outs[i] = BLANK_OUTPUT - } - - // ignore sequence numbers (except at inIndex) - txTmp.ins.forEach(function (input, y) { - if (y === inIndex) return - - input.sequence = 0 - }) - } - - // SIGHASH_ANYONECANPAY: ignore inputs entirely? - if (hashType & Transaction.SIGHASH_ANYONECANPAY) { - txTmp.ins = [txTmp.ins[inIndex]] - txTmp.ins[0].script = ourScript - - // SIGHASH_ALL: only ignore input scripts - } else { - // "blank" others input scripts - txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT }) - txTmp.ins[inIndex].script = ourScript - } - - // serialize and hash - var buffer = Buffer.allocUnsafe(txTmp.__byteLength(false) + 4) - buffer.writeInt32LE(hashType, buffer.length - 4) - txTmp.__toBuffer(buffer, 0, false) - - return bcrypto.hash256(buffer) -} - -Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, value, hashType) { - typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments) - - var tbuffer, toffset - function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) } - function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) } - function writeUInt64 (i) { toffset = bufferutils.writeUInt64LE(tbuffer, i, toffset) } - function writeVarInt (i) { - varuint.encode(i, tbuffer, toffset) - toffset += varuint.encode.bytes - } - function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } - - var hashOutputs = ZERO - var hashPrevouts = ZERO - var hashSequence = ZERO - - if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) { - tbuffer = Buffer.allocUnsafe(36 * this.ins.length) - toffset = 0 - - this.ins.forEach(function (txIn) { - writeSlice(txIn.hash) - writeUInt32(txIn.index) - }) - - hashPrevouts = bcrypto.hash256(tbuffer) - } - - if (!(hashType & Transaction.SIGHASH_ANYONECANPAY) && - (hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && - (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { - tbuffer = Buffer.allocUnsafe(4 * this.ins.length) - toffset = 0 - - this.ins.forEach(function (txIn) { - writeUInt32(txIn.sequence) - }) - - hashSequence = bcrypto.hash256(tbuffer) - } - - if ((hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && - (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { - var txOutsSize = this.outs.reduce(function (sum, output) { - return sum + 8 + varSliceSize(output.script) - }, 0) - - tbuffer = Buffer.allocUnsafe(txOutsSize) - toffset = 0 - - this.outs.forEach(function (out) { - writeUInt64(out.value) - writeVarSlice(out.script) - }) - - hashOutputs = bcrypto.hash256(tbuffer) - } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE && inIndex < this.outs.length) { - var output = this.outs[inIndex] - - tbuffer = Buffer.allocUnsafe(8 + varSliceSize(output.script)) - toffset = 0 - writeUInt64(output.value) - writeVarSlice(output.script) - - hashOutputs = bcrypto.hash256(tbuffer) - } - - tbuffer = Buffer.allocUnsafe(156 + varSliceSize(prevOutScript)) - toffset = 0 - - var input = this.ins[inIndex] - writeUInt32(this.version) - writeSlice(hashPrevouts) - writeSlice(hashSequence) - writeSlice(input.hash) - writeUInt32(input.index) - writeVarSlice(prevOutScript) - writeUInt64(value) - writeUInt32(input.sequence) - writeSlice(hashOutputs) - writeUInt32(this.locktime) - writeUInt32(hashType) - return bcrypto.hash256(tbuffer) -} - -Transaction.prototype.getHash = function () { - return bcrypto.hash256(this.__toBuffer(undefined, undefined, false)) -} - -Transaction.prototype.getId = function () { - // transaction hash's are displayed in reverse order - return this.getHash().reverse().toString('hex') -} - -Transaction.prototype.toBuffer = function (buffer, initialOffset) { - return this.__toBuffer(buffer, initialOffset, true) -} - -Transaction.prototype.__toBuffer = function (buffer, initialOffset, __allowWitness) { - if (!buffer) buffer = Buffer.allocUnsafe(this.__byteLength(__allowWitness)) - - var offset = initialOffset || 0 - function writeSlice (slice) { offset += slice.copy(buffer, offset) } - function writeUInt8 (i) { offset = buffer.writeUInt8(i, offset) } - function writeUInt32 (i) { offset = buffer.writeUInt32LE(i, offset) } - function writeInt32 (i) { offset = buffer.writeInt32LE(i, offset) } - function writeUInt64 (i) { offset = bufferutils.writeUInt64LE(buffer, i, offset) } - function writeVarInt (i) { - varuint.encode(i, buffer, offset) - offset += varuint.encode.bytes - } - function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } - function writeVector (vector) { writeVarInt(vector.length); vector.forEach(writeVarSlice) } - - writeInt32(this.version) - - var hasWitnesses = __allowWitness && this.hasWitnesses() - - if (hasWitnesses) { - writeUInt8(Transaction.ADVANCED_TRANSACTION_MARKER) - writeUInt8(Transaction.ADVANCED_TRANSACTION_FLAG) - } - - writeVarInt(this.ins.length) - - this.ins.forEach(function (txIn) { - writeSlice(txIn.hash) - writeUInt32(txIn.index) - writeVarSlice(txIn.script) - writeUInt32(txIn.sequence) - }) - - writeVarInt(this.outs.length) - this.outs.forEach(function (txOut) { - if (!txOut.valueBuffer) { - writeUInt64(txOut.value) - } else { - writeSlice(txOut.valueBuffer) - } - - writeVarSlice(txOut.script) - }) - - if (hasWitnesses) { - this.ins.forEach(function (input) { - writeVector(input.witness) - }) - } - - writeUInt32(this.locktime) - - // avoid slicing unless necessary - if (initialOffset !== undefined) return buffer.slice(initialOffset, offset) - return buffer -} - -Transaction.prototype.toHex = function () { - return this.toBuffer().toString('hex') -} - -Transaction.prototype.setInputScript = function (index, scriptSig) { - typeforce(types.tuple(types.Number, types.Buffer), arguments) - - this.ins[index].script = scriptSig -} - -Transaction.prototype.setWitness = function (index, witness) { - typeforce(types.tuple(types.Number, [types.Buffer]), arguments) - - this.ins[index].witness = 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){ -var Buffer = require('safe-buffer').Buffer -var baddress = require('./address') -var bcrypto = require('./crypto') -var bscript = require('./script') -var btemplates = require('./templates') -var networks = require('./networks') -var ops = require('bitcoin-ops') -var typeforce = require('typeforce') -var types = require('./types') -var scriptTypes = btemplates.types -var SIGNABLE = [btemplates.types.P2PKH, btemplates.types.P2PK, btemplates.types.MULTISIG] -var P2SH = SIGNABLE.concat([btemplates.types.P2WPKH, btemplates.types.P2WSH]) - -var ECPair = require('./ecpair') -var ECSignature = require('./ecsignature') -var Transaction = require('./transaction') - -function supportedType (type) { - return SIGNABLE.indexOf(type) !== -1 -} - -function supportedP2SHType (type) { - return P2SH.indexOf(type) !== -1 -} - -function extractChunks (type, chunks, script) { - var pubKeys = [] - var signatures = [] - switch (type) { - case scriptTypes.P2PKH: - // if (redeemScript) throw new Error('Nonstandard... P2SH(P2PKH)') - pubKeys = chunks.slice(1) - signatures = chunks.slice(0, 1) - break - - case scriptTypes.P2PK: - pubKeys[0] = script ? btemplates.pubKey.output.decode(script) : undefined - signatures = chunks.slice(0, 1) - break - - case scriptTypes.MULTISIG: - if (script) { - var multisig = btemplates.multisig.output.decode(script) - pubKeys = multisig.pubKeys - } - - signatures = chunks.slice(1).map(function (chunk) { - return chunk.length === 0 ? undefined : chunk - }) - break - } - - return { - pubKeys: pubKeys, - signatures: signatures - } -} -function expandInput (scriptSig, witnessStack) { - if (scriptSig.length === 0 && witnessStack.length === 0) return {} - - var prevOutScript - var prevOutType - var scriptType - var script - var redeemScript - var witnessScript - var witnessScriptType - var redeemScriptType - var witness = false - var p2wsh = false - var p2sh = false - var witnessProgram - var chunks - - var scriptSigChunks = bscript.decompile(scriptSig) - var sigType = btemplates.classifyInput(scriptSigChunks, true) - if (sigType === scriptTypes.P2SH) { - p2sh = true - redeemScript = scriptSigChunks[scriptSigChunks.length - 1] - redeemScriptType = btemplates.classifyOutput(redeemScript) - prevOutScript = btemplates.scriptHash.output.encode(bcrypto.hash160(redeemScript)) - prevOutType = scriptTypes.P2SH - script = redeemScript - } - - var classifyWitness = btemplates.classifyWitness(witnessStack, true) - if (classifyWitness === scriptTypes.P2WSH) { - witnessScript = witnessStack[witnessStack.length - 1] - witnessScriptType = btemplates.classifyOutput(witnessScript) - p2wsh = true - witness = true - if (scriptSig.length === 0) { - prevOutScript = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) - prevOutType = scriptTypes.P2WSH - if (redeemScript !== undefined) { - throw new Error('Redeem script given when unnecessary') - } - // bare witness - } else { - if (!redeemScript) { - throw new Error('No redeemScript provided for P2WSH, but scriptSig non-empty') - } - witnessProgram = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) - if (!redeemScript.equals(witnessProgram)) { - throw new Error('Redeem script didn\'t match witnessScript') - } - } - - if (!supportedType(btemplates.classifyOutput(witnessScript))) { - throw new Error('unsupported witness script') - } - - script = witnessScript - scriptType = witnessScriptType - chunks = witnessStack.slice(0, -1) - } else if (classifyWitness === scriptTypes.P2WPKH) { - witness = true - var key = witnessStack[witnessStack.length - 1] - var keyHash = bcrypto.hash160(key) - if (scriptSig.length === 0) { - prevOutScript = btemplates.witnessPubKeyHash.output.encode(keyHash) - prevOutType = scriptTypes.P2WPKH - if (typeof redeemScript !== 'undefined') { - throw new Error('Redeem script given when unnecessary') - } - } else { - if (!redeemScript) { - throw new Error('No redeemScript provided for P2WPKH, but scriptSig wasn\'t empty') - } - witnessProgram = btemplates.witnessPubKeyHash.output.encode(keyHash) - if (!redeemScript.equals(witnessProgram)) { - throw new Error('Redeem script did not have the right witness program') - } - } - - scriptType = scriptTypes.P2PKH - chunks = witnessStack - } else if (redeemScript) { - if (!supportedP2SHType(redeemScriptType)) { - throw new Error('Bad redeemscript!') - } - - script = redeemScript - scriptType = redeemScriptType - chunks = scriptSigChunks.slice(0, -1) - } else { - prevOutType = scriptType = btemplates.classifyInput(scriptSig) - chunks = scriptSigChunks - } - - var expanded = extractChunks(scriptType, chunks, script) - - var result = { - pubKeys: expanded.pubKeys, - signatures: expanded.signatures, - prevOutScript: prevOutScript, - prevOutType: prevOutType, - signType: scriptType, - signScript: script, - witness: Boolean(witness) - } - - if (p2sh) { - result.redeemScript = redeemScript - result.redeemScriptType = redeemScriptType - } - - if (p2wsh) { - result.witnessScript = witnessScript - result.witnessScriptType = witnessScriptType - } - - return result -} - -// could be done in expandInput, but requires the original Transaction for hashForSignature -function fixMultisigOrder (input, transaction, vin) { - if (input.redeemScriptType !== scriptTypes.MULTISIG || !input.redeemScript) return - if (input.pubKeys.length === input.signatures.length) return - - var unmatched = input.signatures.concat() - - input.signatures = input.pubKeys.map(function (pubKey) { - var keyPair = ECPair.fromPublicKeyBuffer(pubKey) - var match - - // check for a signature - unmatched.some(function (signature, i) { - // skip if undefined || OP_0 - if (!signature) return false - - // TODO: avoid O(n) hashForSignature - var parsed = ECSignature.parseScriptSignature(signature) - var hash = transaction.hashForSignature(vin, input.redeemScript, parsed.hashType) - - // skip if signature does not match pubKey - if (!keyPair.verify(hash, parsed.signature)) return false - - // remove matched signature from unmatched - unmatched[i] = undefined - match = signature - - return true - }) - - return match - }) -} - -function expandOutput (script, scriptType, ourPubKey) { - typeforce(types.Buffer, script) - - var scriptChunks = bscript.decompile(script) - if (!scriptType) { - scriptType = btemplates.classifyOutput(script) - } - - var pubKeys = [] - - switch (scriptType) { - // does our hash160(pubKey) match the output scripts? - case scriptTypes.P2PKH: - if (!ourPubKey) break - - var pkh1 = scriptChunks[2] - var pkh2 = bcrypto.hash160(ourPubKey) - if (pkh1.equals(pkh2)) pubKeys = [ourPubKey] - break - - // does our hash160(pubKey) match the output scripts? - case scriptTypes.P2WPKH: - if (!ourPubKey) break - - var wpkh1 = scriptChunks[1] - var wpkh2 = bcrypto.hash160(ourPubKey) - if (wpkh1.equals(wpkh2)) pubKeys = [ourPubKey] - break - - case scriptTypes.P2PK: - pubKeys = scriptChunks.slice(0, 1) - break - - case scriptTypes.MULTISIG: - pubKeys = scriptChunks.slice(1, -2) - break - - default: return { scriptType: scriptType } - } - - return { - pubKeys: pubKeys, - scriptType: scriptType, - signatures: pubKeys.map(function () { return undefined }) - } -} - -function checkP2SHInput (input, redeemScriptHash) { - if (input.prevOutType) { - if (input.prevOutType !== scriptTypes.P2SH) throw new Error('PrevOutScript must be P2SH') - - var prevOutScriptScriptHash = bscript.decompile(input.prevOutScript)[1] - if (!prevOutScriptScriptHash.equals(redeemScriptHash)) throw new Error('Inconsistent hash160(RedeemScript)') - } -} - -function checkP2WSHInput (input, witnessScriptHash) { - if (input.prevOutType) { - if (input.prevOutType !== scriptTypes.P2WSH) throw new Error('PrevOutScript must be P2WSH') - - var scriptHash = bscript.decompile(input.prevOutScript)[1] - if (!scriptHash.equals(witnessScriptHash)) throw new Error('Inconsistent sha25(WitnessScript)') - } -} - -function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScript) { - var expanded - var prevOutType - var prevOutScript - - var p2sh = false - var p2shType - var redeemScriptHash - - var witness = false - var p2wsh = false - var witnessType - var witnessScriptHash - - var signType - var signScript - - if (redeemScript && witnessScript) { - redeemScriptHash = bcrypto.hash160(redeemScript) - witnessScriptHash = bcrypto.sha256(witnessScript) - checkP2SHInput(input, redeemScriptHash) - - if (!redeemScript.equals(btemplates.witnessScriptHash.output.encode(witnessScriptHash))) throw new Error('Witness script inconsistent with redeem script') - - expanded = expandOutput(witnessScript, undefined, kpPubKey) - if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') - - prevOutType = btemplates.types.P2SH - prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) - p2sh = witness = p2wsh = true - p2shType = btemplates.types.P2WSH - signType = witnessType = expanded.scriptType - signScript = witnessScript - } else if (redeemScript) { - redeemScriptHash = bcrypto.hash160(redeemScript) - checkP2SHInput(input, redeemScriptHash) - - expanded = expandOutput(redeemScript, undefined, kpPubKey) - if (!expanded.pubKeys) throw new Error('RedeemScript not supported "' + bscript.toASM(redeemScript) + '"') - - prevOutType = btemplates.types.P2SH - prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) - p2sh = true - signType = p2shType = expanded.scriptType - signScript = redeemScript - witness = signType === btemplates.types.P2WPKH - } else if (witnessScript) { - witnessScriptHash = bcrypto.sha256(witnessScript) - checkP2WSHInput(input, witnessScriptHash) - - expanded = expandOutput(witnessScript, undefined, kpPubKey) - if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') - - prevOutType = btemplates.types.P2WSH - prevOutScript = btemplates.witnessScriptHash.output.encode(witnessScriptHash) - witness = p2wsh = true - signType = witnessType = expanded.scriptType - signScript = witnessScript - } else if (input.prevOutType) { - // embedded scripts are not possible without a redeemScript - if (input.prevOutType === scriptTypes.P2SH || - input.prevOutType === scriptTypes.P2WSH) { - throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript') - } - - prevOutType = input.prevOutType - prevOutScript = input.prevOutScript - expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey) - if (!expanded.pubKeys) return - - witness = (input.prevOutType === scriptTypes.P2WPKH) - signType = prevOutType - signScript = prevOutScript - } else { - prevOutScript = btemplates.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey)) - expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey) - - prevOutType = scriptTypes.P2PKH - witness = false - signType = prevOutType - signScript = prevOutScript - } - - if (signType === scriptTypes.P2WPKH) { - signScript = btemplates.pubKeyHash.output.encode(btemplates.witnessPubKeyHash.output.decode(signScript)) - } - - if (p2sh) { - input.redeemScript = redeemScript - input.redeemScriptType = p2shType - } - - if (p2wsh) { - input.witnessScript = witnessScript - input.witnessScriptType = witnessType - } - - input.pubKeys = expanded.pubKeys - input.signatures = expanded.signatures - input.signScript = signScript - input.signType = signType - input.prevOutScript = prevOutScript - input.prevOutType = prevOutType - input.witness = witness -} - -function buildStack (type, signatures, pubKeys, allowIncomplete) { - if (type === scriptTypes.P2PKH) { - if (signatures.length === 1 && Buffer.isBuffer(signatures[0]) && pubKeys.length === 1) return btemplates.pubKeyHash.input.encodeStack(signatures[0], pubKeys[0]) - } else if (type === scriptTypes.P2PK) { - if (signatures.length === 1 && Buffer.isBuffer(signatures[0])) return btemplates.pubKey.input.encodeStack(signatures[0]) - } else if (type === scriptTypes.MULTISIG) { - if (signatures.length > 0) { - signatures = signatures.map(function (signature) { - return signature || ops.OP_0 - }) - if (!allowIncomplete) { - // remove blank signatures - signatures = signatures.filter(function (x) { return x !== ops.OP_0 }) - } - - return btemplates.multisig.input.encodeStack(signatures) - } - } else { - throw new Error('Not yet supported') - } - - if (!allowIncomplete) throw new Error('Not enough signatures provided') - return [] -} - -function buildInput (input, allowIncomplete) { - var scriptType = input.prevOutType - var sig = [] - var witness = [] - - if (supportedType(scriptType)) { - sig = buildStack(scriptType, input.signatures, input.pubKeys, allowIncomplete) - } - - var p2sh = false - if (scriptType === btemplates.types.P2SH) { - // We can remove this error later when we have a guarantee prepareInput - // rejects unsignable scripts - it MUST be signable at this point. - if (!allowIncomplete && !supportedP2SHType(input.redeemScriptType)) { - throw new Error('Impossible to sign this type') - } - - if (supportedType(input.redeemScriptType)) { - sig = buildStack(input.redeemScriptType, input.signatures, input.pubKeys, allowIncomplete) - } - - // If it wasn't SIGNABLE, it's witness, defer to that - if (input.redeemScriptType) { - p2sh = true - scriptType = input.redeemScriptType - } - } - - switch (scriptType) { - // P2WPKH is a special case of P2PKH - case btemplates.types.P2WPKH: - witness = buildStack(btemplates.types.P2PKH, input.signatures, input.pubKeys, allowIncomplete) - break - - case btemplates.types.P2WSH: - // We can remove this check later - if (!allowIncomplete && !supportedType(input.witnessScriptType)) { - throw new Error('Impossible to sign this type') - } - - if (supportedType(input.witnessScriptType)) { - witness = buildStack(input.witnessScriptType, input.signatures, input.pubKeys, allowIncomplete) - witness.push(input.witnessScript) - scriptType = input.witnessScriptType - } - - break - } - - // append redeemScript if necessary - if (p2sh) { - sig.push(input.redeemScript) - } - - return { - type: scriptType, - script: bscript.compile(sig), - witness: witness - } -} - -function TransactionBuilder (network, maximumFeeRate) { - this.prevTxMap = {} - 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.inputs = [] - this.tx = new Transaction() -} - -TransactionBuilder.prototype.setLockTime = function (locktime) { - typeforce(types.UInt32, locktime) - - // if any signatures exist, throw - if (this.inputs.some(function (input) { - if (!input.signatures) return false - - return input.signatures.some(function (s) { return s }) - })) { - throw new Error('No, this would invalidate signatures') - } - - this.tx.locktime = locktime -} - -TransactionBuilder.prototype.setVersion = function (version) { - typeforce(types.UInt32, version) - - // XXX: this might eventually become more complex depending on what the versions represent - this.tx.version = version -} - -TransactionBuilder.fromTransaction = function (transaction, network) { - var txb = new TransactionBuilder(network) - - // Copy transaction fields - txb.setVersion(transaction.version) - txb.setLockTime(transaction.locktime) - - // Copy outputs (done first to avoid signature invalidation) - transaction.outs.forEach(function (txOut) { - txb.addOutput(txOut.script, txOut.value) - }) - - // Copy inputs - transaction.ins.forEach(function (txIn) { - txb.__addInputUnsafe(txIn.hash, txIn.index, { - sequence: txIn.sequence, - script: txIn.script, - witness: txIn.witness - }) - }) - - // fix some things not possible through the public API - txb.inputs.forEach(function (input, i) { - fixMultisigOrder(input, transaction, i) - }) - - return txb -} - -TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) { - if (!this.__canModifyInputs()) { - throw new Error('No, this would invalidate signatures') - } - - var value - - // is it a hex string? - if (typeof txHash === 'string') { - // transaction hashs's are displayed in reverse order, un-reverse it - txHash = Buffer.from(txHash, 'hex').reverse() - - // is it a Transaction object? - } else if (txHash instanceof Transaction) { - var txOut = txHash.outs[vout] - prevOutScript = txOut.script - value = txOut.value - - txHash = txHash.getHash() - } - - return this.__addInputUnsafe(txHash, vout, { - sequence: sequence, - prevOutScript: prevOutScript, - value: value - }) -} - -TransactionBuilder.prototype.__addInputUnsafe = function (txHash, vout, options) { - if (Transaction.isCoinbaseHash(txHash)) { - throw new Error('coinbase inputs not supported') - } - - var prevTxOut = txHash.toString('hex') + ':' + vout - if (this.prevTxMap[prevTxOut] !== undefined) throw new Error('Duplicate TxOut: ' + prevTxOut) - - var input = {} - - // derive what we can from the scriptSig - if (options.script !== undefined) { - input = expandInput(options.script, options.witness || []) - } - - // if an input value was given, retain it - if (options.value !== undefined) { - input.value = options.value - } - - // derive what we can from the previous transactions output script - if (!input.prevOutScript && options.prevOutScript) { - var prevOutType - - if (!input.pubKeys && !input.signatures) { - var expanded = expandOutput(options.prevOutScript) - - if (expanded.pubKeys) { - input.pubKeys = expanded.pubKeys - input.signatures = expanded.signatures - } - - prevOutType = expanded.scriptType - } - - input.prevOutScript = options.prevOutScript - input.prevOutType = prevOutType || btemplates.classifyOutput(options.prevOutScript) - } - - var vin = this.tx.addInput(txHash, vout, options.sequence, options.scriptSig) - this.inputs[vin] = input - this.prevTxMap[prevTxOut] = vin - return vin -} - -TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) { - if (!this.__canModifyOutputs()) { - throw new Error('No, this would invalidate signatures') - } - - // Attempt to get a script if it's a base58 address string - if (typeof scriptPubKey === 'string') { - scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network) - } - - return this.tx.addOutput(scriptPubKey, value) -} - -TransactionBuilder.prototype.build = function () { - return this.__build(false) -} -TransactionBuilder.prototype.buildIncomplete = function () { - return this.__build(true) -} - -TransactionBuilder.prototype.__build = function (allowIncomplete) { - if (!allowIncomplete) { - if (!this.tx.ins.length) throw new Error('Transaction has no inputs') - if (!this.tx.outs.length) throw new Error('Transaction has no outputs') - } - - var tx = this.tx.clone() - // Create script signatures from inputs - this.inputs.forEach(function (input, i) { - var scriptType = input.witnessScriptType || input.redeemScriptType || input.prevOutType - if (!scriptType && !allowIncomplete) throw new Error('Transaction is not complete') - var result = buildInput(input, allowIncomplete) - - // skip if no result - if (!allowIncomplete) { - if (!supportedType(result.type) && result.type !== btemplates.types.P2WPKH) { - throw new Error(result.type + ' not supported') - } - } - - tx.setInputScript(i, result.script) - tx.setWitness(i, result.witness) - }) - - if (!allowIncomplete) { - // do not rely on this, its merely a last resort - if (this.__overMaximumFees(tx.virtualSize())) { - throw new Error('Transaction has absurd fees') - } - } - - return tx -} - -function canSign (input) { - return input.prevOutScript !== undefined && - input.signScript !== undefined && - input.pubKeys !== undefined && - input.signatures !== undefined && - input.signatures.length === input.pubKeys.length && - input.pubKeys.length > 0 && - ( - input.witness === false || - (input.witness === true && input.value !== undefined) - ) -} - -TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashType, witnessValue, witnessScript) { - // TODO: remove keyPair.network matching in 4.0.0 - if (keyPair.network && keyPair.network !== this.network) throw new TypeError('Inconsistent network') - if (!this.inputs[vin]) throw new Error('No input at index: ' + vin) - hashType = hashType || Transaction.SIGHASH_ALL - - var input = this.inputs[vin] - - // if redeemScript was previously provided, enforce consistency - if (input.redeemScript !== undefined && - redeemScript && - !input.redeemScript.equals(redeemScript)) { - throw new Error('Inconsistent redeemScript') - } - - var kpPubKey = keyPair.publicKey || keyPair.getPublicKeyBuffer() - if (!canSign(input)) { - if (witnessValue !== undefined) { - if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue') - typeforce(types.Satoshi, witnessValue) - input.value = witnessValue - } - - if (!canSign(input)) prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript) - if (!canSign(input)) throw Error(input.prevOutType + ' not supported') - } - - // ready to sign - var signatureHash - if (input.witness) { - signatureHash = this.tx.hashForWitnessV0(vin, input.signScript, input.value, hashType) - } else { - signatureHash = this.tx.hashForSignature(vin, input.signScript, hashType) - } - - // enforce in order signing of public keys - var signed = input.pubKeys.some(function (pubKey, i) { - if (!kpPubKey.equals(pubKey)) return false - if (input.signatures[i]) throw new Error('Signature already exists') - if (kpPubKey.length !== 33 && - input.signType === scriptTypes.P2WPKH) throw new Error('BIP143 rejects uncompressed public keys in P2WPKH or P2WSH') - - var signature = keyPair.sign(signatureHash) - if (Buffer.isBuffer(signature)) signature = ECSignature.fromRSBuffer(signature) - - input.signatures[i] = signature.toScriptSignature(hashType) - return true - }) - - if (!signed) throw new Error('Key pair cannot sign for this input') -} - -function signatureHashType (buffer) { - return buffer.readUInt8(buffer.length - 1) -} - -TransactionBuilder.prototype.__canModifyInputs = function () { - return this.inputs.every(function (input) { - // any signatures? - if (input.signatures === undefined) return true - - return input.signatures.every(function (signature) { - if (!signature) return true - var hashType = signatureHashType(signature) - - // if SIGHASH_ANYONECANPAY is set, signatures would not - // be invalidated by more inputs - return hashType & Transaction.SIGHASH_ANYONECANPAY - }) - }) -} - -TransactionBuilder.prototype.__canModifyOutputs = function () { - var nInputs = this.tx.ins.length - var nOutputs = this.tx.outs.length - - return this.inputs.every(function (input) { - if (input.signatures === undefined) return true - - return input.signatures.every(function (signature) { - if (!signature) return true - var hashType = signatureHashType(signature) - - var hashTypeMod = hashType & 0x1f - if (hashTypeMod === Transaction.SIGHASH_NONE) return true - if (hashTypeMod === Transaction.SIGHASH_SINGLE) { - // if SIGHASH_SINGLE is set, and nInputs > nOutputs - // some signatures would be invalidated by the addition - // of more outputs - return nInputs <= nOutputs - } - }) - }) -} - -TransactionBuilder.prototype.__overMaximumFees = function (bytes) { - // not all inputs will have .value defined - var incoming = this.inputs.reduce(function (a, x) { return a + (x.value >>> 0) }, 0) - - // but all outputs do, and if we have any input value - // we can immediately determine if the outputs are too small - var outgoing = this.tx.outs.reduce(function (a, x) { return a + x.value }, 0) - var fee = incoming - outgoing - var feeRate = fee / bytes - - return feeRate > this.maximumFeeRate -} - -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){ -var typeforce = require('typeforce') - -var UINT31_MAX = Math.pow(2, 31) - 1 -function UInt31 (value) { - return typeforce.UInt32(value) && value <= UINT31_MAX -} - -function BIP32Path (value) { - return typeforce.String(value) && value.match(/^(m\/)?(\d+'?\/)*\d+'?$/) -} -BIP32Path.toJSON = function () { return 'BIP32 derivation path' } - -var SATOSHI_MAX = 21 * 1e14 -function Satoshi (value) { - return typeforce.UInt53(value) && value <= SATOSHI_MAX -} - -// external dependent types -var BigInt = typeforce.quacksLike('BigInteger') -var ECPoint = typeforce.quacksLike('Point') - -// exposed, external API -var ECSignature = typeforce.compile({ r: BigInt, s: BigInt }) -var Network = typeforce.compile({ - messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String), - bip32: { - public: typeforce.UInt32, - private: typeforce.UInt32 - }, - pubKeyHash: typeforce.UInt8, - scriptHash: typeforce.UInt8, - wif: typeforce.UInt8 -}) - -// extend typeforce types with ours -var types = { - BigInt: BigInt, - BIP32Path: BIP32Path, - Buffer256bit: typeforce.BufferN(32), - ECPoint: ECPoint, - ECSignature: ECSignature, - Hash160bit: typeforce.BufferN(20), - Hash256bit: typeforce.BufferN(32), - Network: Network, - Satoshi: Satoshi, - UInt31: UInt31 -} - -for (var typeName in typeforce) { - types[typeName] = typeforce[typeName] -} - -module.exports = types - -},{"typeforce":139}],81:[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 ? ''; - }; - - /* - - 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); - }; - - BN.prototype.uor = function uor (num) { - if (this.length > num.length) return this.clone().iuor(num); - return num.clone().iuor(this); - }; - - // 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; - } - - for (var i = 0; i < b.length; i++) { - this.words[i] = this.words[i] & num.words[i]; - } - - this.length = b.length; - - return this.strip(); - }; - - BN.prototype.iand = function iand (num) { - assert((this.negative | num.negative) === 0); - return this.iuand(num); - }; - - // 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); - }; - - BN.prototype.uand = function uand (num) { - if (this.length > num.length) return this.clone().iuand(num); - return num.clone().iuand(this); - }; - - // 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; - } - - for (var i = 0; i < b.length; i++) { - this.words[i] = a.words[i] ^ b.words[i]; - } - - if (this !== a) { - for (; i < a.length; i++) { - this.words[i] = a.words[i]; - } - } - - this.length = a.length; - - return this.strip(); - }; - - BN.prototype.ixor = function ixor (num) { - assert((this.negative | num.negative) === 0); - return this.iuxor(num); - }; - - // 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); - }; - - BN.prototype.uxor = function uxor (num) { - if (this.length > num.length) return this.clone().iuxor(num); - return num.clone().iuxor(this); - }; - - // Not ``this`` with ``width`` bitwidth - BN.prototype.inotn = function inotn (width) { - assert(typeof width === 'number' && width >= 0); - - var bytesNeeded = Math.ceil(width / 26) | 0; - var bitsLeft = width % 26; - - // Extend the buffer with leading zeroes - this._expand(bytesNeeded); - - if (bitsLeft > 0) { - bytesNeeded--; - } - - // Handle complete words - for (var i = 0; i < bytesNeeded; i++) { - this.words[i] = ~this.words[i] & 0x3ffffff; - } - - // Handle the residue - if (bitsLeft > 0) { - this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft)); - } - - // And remove leading zeroes - return this.strip(); - }; - - BN.prototype.notn = function notn (width) { - return this.clone().inotn(width); - }; - - // Set `bit` of `this` - BN.prototype.setn = function setn (bit, val) { - assert(typeof bit === 'number' && bit >= 0); - - var off = (bit / 26) | 0; - var wbit = bit % 26; - - this._expand(off + 1); - - if (val) { - this.words[off] = this.words[off] | (1 << wbit); - } else { - this.words[off] = this.words[off] & ~(1 << wbit); - } - - return this.strip(); - }; - - // Add `num` to `this` in-place - BN.prototype.iadd = function iadd (num) { - var r; - - // negative + positive - if (this.negative !== 0 && num.negative === 0) { - this.negative = 0; - r = this.isub(num); - this.negative ^= 1; - return this._normSign(); - - // positive + negative - } else if (this.negative === 0 && num.negative !== 0) { - num.negative = 0; - r = this.isub(num); - num.negative = 1; - return r._normSign(); - } - - // a.length > b.length - var a, b; - if (this.length > num.length) { - a = this; - b = num; - } else { - a = num; - b = 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; - } - - 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]; - } - } - - return this; - }; - - // 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; - } - - if (this.length > num.length) return this.clone().iadd(num); - - return num.clone().iadd(this); - }; - - // 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(); - - // -this - num = -(this + num) - } else if (this.negative !== 0) { - this.negative = 0; - this.iadd(num); - this.negative = 1; - return this._normSign(); - } - - // At this point both numbers are positive - var cmp = this.cmp(num); - - // Optimization - zeroify - if (cmp === 0) { - this.negative = 0; - this.length = 1; - this.words[0] = 0; - return this; - } - - // a > b - var a, b; - if (cmp > 0) { - a = this; - b = num; - } else { - a = num; - b = this; - } - - 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; - } - - // Copy rest of the words - if (carry === 0 && i < a.length && a !== this) { - for (; i < a.length; i++) { - this.words[i] = a.words[i]; - } - } - - this.length = Math.max(this.length, i); - - if (a !== this) { - this.negative = 1; - } - - return this.strip(); - }; - - // Subtract `num` from `this` - BN.prototype.sub = function sub (num) { - return this.clone().isub(num); - }; - - 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; - - // 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; - - var lo = r & 0x3ffffff; - var carry = (r / 0x4000000) | 0; - out.words[0] = lo; - - 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; - } - out.words[k] = rword | 0; - carry = ncarry | 0; - } - if (carry !== 0) { - out.words[k] = carry | 0; - } else { - out.length--; - } - - return out.strip(); - } - - // 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; - - 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; - } - - function bigMulTo (self, num, out) { - out.negative = num.negative ^ self.negative; - out.length = self.length + num.length; - - 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; - - var lo = r & 0x3ffffff; - ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0; - lo = (lo + rword) | 0; - rword = lo & 0x3ffffff; - ncarry = (ncarry + (lo >>> 26)) | 0; - - hncarry += ncarry >>> 26; - ncarry &= 0x3ffffff; - } - out.words[k] = rword; - carry = ncarry; - ncarry = hncarry; - } - if (carry !== 0) { - out.words[k] = carry; - } else { - out.length--; - } - - return out.strip(); - } - - function jumboMulTo (self, num, out) { - var fftm = new FFTM(); - return fftm.mulp(self, num, out); - } - - 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 res; - }; - - // Cooley-Tukey algorithm for FFT - // slightly revisited to rely on looping instead of recursion - - function FFTM (x, y) { - this.x = x; - this.y = y; - } - - 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); - } - - return t; - }; - - // Returns binary-reversed representation of `x` - FFTM.prototype.revBin = function revBin (x, l, N) { - if (x === 0 || x === N - 1) return x; - - var rb = 0; - for (var i = 0; i < l; i++) { - rb |= (x & 1) << (l - i - 1); - x >>= 1; - } - - return rb; - }; - - // 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]]; - } - }; - - FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) { - this.permute(rbt, rws, iws, rtws, itws, N); - - for (var s = 1; s < N; s <<= 1) { - var l = s << 1; - - var rtwdf = Math.cos(2 * Math.PI / l); - var itwdf = Math.sin(2 * Math.PI / l); - - for (var p = 0; p < N; p += l) { - var rtwdf_ = rtwdf; - var itwdf_ = itwdf; - - for (var j = 0; j < s; j++) { - var re = rtws[p + j]; - var ie = itws[p + j]; - - var ro = rtws[p + j + s]; - var io = itws[p + j + s]; - - var rx = rtwdf_ * ro - itwdf_ * io; - - io = rtwdf_ * io + itwdf_ * ro; - ro = rx; - - rtws[p + j] = re + ro; - itws[p + j] = ie + io; - - rtws[p + j + s] = re - ro; - itws[p + j + s] = ie - io; - - /* jshint maxdepth : false */ - if (j !== l) { - rx = rtwdf * rtwdf_ - itwdf * itwdf_; - - itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_; - rtwdf_ = rx; - } - } - } - } - }; - - 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++; - } - - return 1 << i + 1 + odd; - }; - - FFTM.prototype.conjugate = function conjugate (rws, iws, N) { - if (N <= 1) return; - - for (var i = 0; i < N / 2; i++) { - var t = rws[i]; - - rws[i] = rws[N - i - 1]; - rws[N - i - 1] = t; - - t = iws[i]; - - iws[i] = -iws[N - i - 1]; - iws[N - i - 1] = -t; - } - }; - - 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; - - ws[i] = w & 0x3ffffff; - - if (w < 0x4000000) { - carry = 0; - } else { - carry = w / 0x4000000 | 0; - } - } - - return ws; - }; - - FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) { - var carry = 0; - for (var i = 0; i < len; i++) { - carry = carry + (ws[i] | 0); - - rws[2 * i] = carry & 0x1fff; carry = carry >>> 13; - rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13; - } - - // Pad with zeroes - for (i = 2 * len; i < N; ++i) { - rws[i] = 0; - } - - assert(carry === 0); - assert((carry & ~0x1fff) === 0); - }; - - FFTM.prototype.stub = function stub (N) { - var ph = new Array(N); - for (var i = 0; i < N; i++) { - ph[i] = 0; - } - - return ph; - }; - - FFTM.prototype.mulp = function mulp (x, y, out) { - var N = 2 * this.guessLen13b(x.length, y.length); - - var rbt = this.makeRBT(N); - - var _ = this.stub(N); - - var rws = new Array(N); - var rwst = new Array(N); - var iwst = new Array(N); - - var nrws = new Array(N); - var nrwst = new Array(N); - var niwst = new Array(N); - - var rmws = out.words; - rmws.length = N; - - this.convert13b(x.words, x.length, rws, N); - this.convert13b(y.words, y.length, nrws, N); - - this.transform(rws, _, rwst, iwst, N, rbt); - this.transform(nrws, _, nrwst, niwst, N, rbt); - - 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; - } - - this.conjugate(rwst, iwst, N); - this.transform(rwst, iwst, rmws, _, N, rbt); - this.conjugate(rmws, _, N); - this.normalize13b(rmws, N); - - out.negative = x.negative ^ y.negative; - out.length = x.length + y.length; - return out.strip(); - }; - - // 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); - }; - - // 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); - }; - - // In-place Multiplication - BN.prototype.imul = function imul (num) { - return this.clone().mulTo(num, this); - }; - - BN.prototype.imuln = function imuln (num) { - assert(typeof num === 'number'); - assert(num < 0x4000000); - - // 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; - } - - if (carry !== 0) { - this.words[i] = carry; - this.length++; - } - - return this; - }; - - BN.prototype.muln = function muln (num) { - return this.clone().imuln(num); - }; - - // `this` * `this` - BN.prototype.sqr = function sqr () { - return this.mul(this); - }; - - // `this` * `this` in-place - BN.prototype.isqr = function isqr () { - return this.imul(this.clone()); - }; - - // Math.pow(`this`, `num`) - BN.prototype.pow = function pow (num) { - var w = toBitArray(num); - if (w.length === 0) return new BN(1); - - // Skip leading zeroes - var res = this; - for (var i = 0; i < w.length; i++, res = res.sqr()) { - if (w[i] !== 0) break; - } - - 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); - } - } - - return res; - }; - - // 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; - - if (r !== 0) { - var carry = 0; - - 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 (carry) { - this.words[i] = carry; - this.length++; - } - } - - if (s !== 0) { - for (i = this.length - 1; i >= 0; i--) { - this.words[i + s] = this.words[i]; - } - - for (i = 0; i < s; i++) { - this.words[i] = 0; - } - - this.length += s; - } - - return this.strip(); - }; - - BN.prototype.ishln = function ishln (bits) { - // TODO(indutny): implement me - assert(this.negative === 0); - return this.iushln(bits); - }; - - // 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; - } - - var r = bits % 26; - var s = Math.min((bits - r) / 26, this.length); - var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); - var maskedWords = extended; - - h -= s; - h = Math.max(0, h); - - // Extended mode, copy masked part - if (maskedWords) { - for (var i = 0; i < s; i++) { - maskedWords.words[i] = this.words[i]; - } - maskedWords.length = s; - } - - 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; - } - - 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; - } - - // Push carried bits as a mask - if (maskedWords && carry !== 0) { - maskedWords.words[maskedWords.length++] = carry; - } - - if (this.length === 0) { - this.words[0] = 0; - this.length = 1; - } - - return this.strip(); - }; - - BN.prototype.ishrn = function ishrn (bits, hint, extended) { - // TODO(indutny): implement me - assert(this.negative === 0); - return this.iushrn(bits, hint, extended); - }; - - // Shift-left - BN.prototype.shln = function shln (bits) { - return this.clone().ishln(bits); - }; - - BN.prototype.ushln = function ushln (bits) { - return this.clone().iushln(bits); - }; - - // Shift-right - BN.prototype.shrn = function shrn (bits) { - return this.clone().ishrn(bits); - }; - - BN.prototype.ushrn = function ushrn (bits) { - return this.clone().iushrn(bits); - }; - - // 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; - - // Fast case: bit is much higher than all existing words - if (this.length <= s) return false; - - // Check bit and return - var w = this.words[s]; - - return !!(w & q); - }; - - // 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; - - assert(this.negative === 0, 'imaskn works only with positive numbers'); - - if (this.length <= s) { - return this; - } - - if (r !== 0) { - s++; - } - this.length = Math.min(s, this.length); - - if (r !== 0) { - var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); - this.words[this.length - 1] &= mask; - } - - return this.strip(); - }; - - // Return only lowers bits of number - BN.prototype.maskn = function maskn (bits) { - return this.clone().imaskn(bits); - }; - - // 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); - - // 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; - } - - this.negative = 0; - this.isubn(num); - this.negative = 1; - return this; - } - - // Add without checks - return this._iaddn(num); - }; - - BN.prototype._iaddn = function _iaddn (num) { - this.words[0] += num; - - // 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); - - return this; - }; - - // 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); - - if (this.negative !== 0) { - this.negative = 0; - this.iaddn(num); - this.negative = 1; - return this; - } - - this.words[0] -= num; - - 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; - } - } - - return this.strip(); - }; - - BN.prototype.addn = function addn (num) { - return this.clone().iaddn(num); - }; - - BN.prototype.subn = function subn (num) { - return this.clone().isubn(num); - }; - - BN.prototype.iabs = function iabs () { - this.negative = 0; - - return this; - }; - - BN.prototype.abs = function abs () { - return this.clone().iabs(); - }; - - BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) { - var len = num.length + shift; - var i; - - this._expand(len); - - 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; - } - - if (carry === 0) return this.strip(); - - // 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; - - return this.strip(); - }; - - BN.prototype._wordDiv = function _wordDiv (num, mode) { - var shift = this.length - num.length; - - var a = this.clone(); - var b = num; - - // 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; - } - - // Initialize quotient - var m = a.length - b.length; - var q; - - 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 diff = a.clone()._ishlnsubmul(b, 1, m); - if (diff.negative === 0) { - a = diff; - if (q) { - q.words[m] = 1; - } - } - - for (var j = m - 1; j >= 0; j--) { - var qj = (a.words[b.length + j] | 0) * 0x4000000 + - (a.words[b.length + j - 1] | 0); - - // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max - // (0x7ffffff) - qj = Math.min((qj / bhi) | 0, 0x3ffffff); - - 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(); - - // Denormalize - if (mode !== 'div' && shift !== 0) { - a.iushrn(shift); - } - - return { - div: q || null, - mod: a - }; - }; - - // 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()); - - if (this.isZero()) { - return { - div: new BN(0), - mod: new BN(0) - }; - } - - var div, mod, res; - if (this.negative !== 0 && num.negative === 0) { - res = this.neg().divmod(num, mode); - - if (mode !== 'mod') { - div = res.div.neg(); - } - - if (mode !== 'div') { - mod = res.mod.neg(); - if (positive && mod.negative !== 0) { - mod.iadd(num); - } - } - - return { - div: div, - mod: mod - }; - } - - if (this.negative === 0 && num.negative !== 0) { - res = this.divmod(num.neg(), mode); - - if (mode !== 'mod') { - div = res.div.neg(); - } - - return { - div: div, - mod: res.mod - }; - } - - if ((this.negative & num.negative) !== 0) { - res = this.neg().divmod(num.neg(), mode); - - if (mode !== 'div') { - mod = res.mod.neg(); - if (positive && mod.negative !== 0) { - mod.isub(num); - } - } - - return { - div: res.div, - mod: mod - }; - } - - // Both numbers are positive at this point - - // Strip both numbers to approximate shift value - if (num.length > this.length || this.cmp(num) < 0) { - return { - div: new BN(0), - mod: this - }; - } - - // Very short reduction - if (num.length === 1) { - if (mode === 'div') { - return { - div: this.divn(num.words[0]), - mod: null - }; - } - - if (mode === 'mod') { - return { - div: null, - mod: new BN(this.modn(num.words[0])) - }; - } - - return { - div: this.divn(num.words[0]), - mod: new BN(this.modn(num.words[0])) - }; - } - - return this._wordDiv(num, mode); - }; - - // Find `this` / `num` - BN.prototype.div = function div (num) { - return this.divmod(num, 'div', false).div; - }; - - // Find `this` % `num` - BN.prototype.mod = function mod (num) { - return this.divmod(num, 'mod', false).mod; - }; - - BN.prototype.umod = function umod (num) { - return this.divmod(num, 'mod', true).mod; - }; - - // Find Round(`this` / `num`) - BN.prototype.divRound = function divRound (num) { - var dm = this.divmod(num); - - // Fast case - exact division - if (dm.mod.isZero()) return dm.div; - - var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod; - - var half = num.ushrn(1); - var r2 = num.andln(1); - var cmp = mod.cmp(half); - - // Round down - if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div; - - // Round up - return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1); - }; - - BN.prototype.modn = function modn (num) { - assert(num <= 0x3ffffff); - var p = (1 << 26) % num; - - var acc = 0; - for (var i = this.length - 1; i >= 0; i--) { - acc = (p * acc + (this.words[i] | 0)) % num; - } - - return acc; - }; - - // In-place division by number - BN.prototype.idivn = function idivn (num) { - assert(num <= 0x3ffffff); - - 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; - } - - return this.strip(); - }; - - BN.prototype.divn = function divn (num) { - return this.clone().idivn(num); - }; - - BN.prototype.egcd = function egcd (p) { - assert(p.negative === 0); - assert(!p.isZero()); - - var x = this; - var y = p.clone(); - - if (x.negative !== 0) { - x = x.umod(p); - } else { - x = x.clone(); - } - - // A * x + B * y = x - var A = new BN(1); - var B = new BN(0); - - // C * x + D * y = y - var C = new BN(0); - var D = new BN(1); - - var g = 0; - - while (x.isEven() && y.isEven()) { - x.iushrn(1); - y.iushrn(1); - ++g; - } - - var yp = y.clone(); - var xp = x.clone(); - - 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); - } - - A.iushrn(1); - B.iushrn(1); - } - } - - 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); - } - - C.iushrn(1); - D.iushrn(1); - } - } - - if (x.cmp(y) >= 0) { - x.isub(y); - A.isub(C); - B.isub(D); - } else { - y.isub(x); - C.isub(A); - D.isub(B); - } - } - - return { - a: C, - b: D, - gcd: y.iushln(g) - }; - }; - - // 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()); - - var a = this; - var b = p.clone(); - - if (a.negative !== 0) { - a = a.umod(p); - } else { - a = a.clone(); - } - - var x1 = new BN(1); - var x2 = new BN(0); - - var delta = b.clone(); - - 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); - } - - x1.iushrn(1); - } - } - - 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); - } - - x2.iushrn(1); - } - } - - if (a.cmp(b) >= 0) { - a.isub(b); - x1.isub(x2); - } else { - b.isub(a); - x2.isub(x1); - } - } - - var res; - if (a.cmpn(1) === 0) { - res = x1; - } else { - res = x2; - } - - if (res.cmpn(0) < 0) { - res.iadd(p); - } - - return res; - }; - - BN.prototype.gcd = function gcd (num) { - if (this.isZero()) return num.abs(); - if (num.isZero()) return this.abs(); - - var a = this.clone(); - var b = num.clone(); - a.negative = 0; - b.negative = 0; - - // Remove common factor of two - for (var shift = 0; a.isEven() && b.isEven(); shift++) { - a.iushrn(1); - b.iushrn(1); - } - - do { - while (a.isEven()) { - a.iushrn(1); - } - while (b.isEven()) { - b.iushrn(1); - } - - 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; - } - - a.isub(b); - } while (true); - - return b.iushln(shift); - }; - - // Invert number in the field F(num) - BN.prototype.invm = function invm (num) { - return this.egcd(num).a.umod(num); - }; - - BN.prototype.isEven = function isEven () { - return (this.words[0] & 1) === 0; - }; - - BN.prototype.isOdd = function isOdd () { - return (this.words[0] & 1) === 1; - }; - - // And first word and num - BN.prototype.andln = function andln (num) { - return this.words[0] & num; - }; - - // 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; - - // Fast case: bit is much higher than all existing words - if (this.length <= s) { - this._expand(s + 1); - this.words[s] |= q; - return this; - } - - // 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; - }; - - BN.prototype.isZero = function isZero () { - return this.length === 1 && this.words[0] === 0; - }; - - BN.prototype.cmpn = function cmpn (num) { - var negative = num < 0; - - if (this.negative !== 0 && !negative) return -1; - if (this.negative === 0 && negative) return 1; - - this.strip(); - - var res; - if (this.length > 1) { - res = 1; - } else { - if (negative) { - num = -num; - } - - assert(num <= 0x3ffffff, 'Number is too big'); - - var w = this.words[0] | 0; - res = w === num ? 0 : w < num ? -1 : 1; - } - if (this.negative !== 0) return -res | 0; - return res; - }; - - // 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; - - var res = this.ucmp(num); - if (this.negative !== 0) return -res | 0; - return res; - }; - - // 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; - - var res = 0; - for (var i = this.length - 1; i >= 0; i--) { - var a = this.words[i] | 0; - var b = num.words[i] | 0; - - if (a === b) continue; - if (a < b) { - res = -1; - } else if (a > b) { - res = 1; - } - break; - } - return res; - }; - - BN.prototype.gtn = function gtn (num) { - return this.cmpn(num) === 1; - }; - - BN.prototype.gt = function gt (num) { - return this.cmp(num) === 1; - }; - - BN.prototype.gten = function gten (num) { - return this.cmpn(num) >= 0; - }; - - BN.prototype.gte = function gte (num) { - return this.cmp(num) >= 0; - }; - - BN.prototype.ltn = function ltn (num) { - return this.cmpn(num) === -1; - }; - - BN.prototype.lt = function lt (num) { - return this.cmp(num) === -1; - }; - - BN.prototype.lten = function lten (num) { - return this.cmpn(num) <= 0; - }; - - BN.prototype.lte = function lte (num) { - return this.cmp(num) <= 0; - }; - - BN.prototype.eqn = function eqn (num) { - return this.cmpn(num) === 0; - }; - - BN.prototype.eq = function eq (num) { - return this.cmp(num) === 0; - }; - - // - // A reduce context, could be using montgomery or something better, depending - // on the `m` itself. - // - BN.red = function red (num) { - return new Red(num); - }; - - 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); - }; - - BN.prototype.fromRed = function fromRed () { - assert(this.red, 'fromRed works only with numbers in reduction context'); - return this.red.convertFrom(this); - }; - - BN.prototype._forceRed = function _forceRed (ctx) { - this.red = ctx; - return this; - }; - - BN.prototype.forceRed = function forceRed (ctx) { - assert(!this.red, 'Already a number in reduction context'); - return this._forceRed(ctx); - }; - - BN.prototype.redAdd = function redAdd (num) { - assert(this.red, 'redAdd works only with red numbers'); - return this.red.add(this, num); - }; - - BN.prototype.redIAdd = function redIAdd (num) { - assert(this.red, 'redIAdd works only with red numbers'); - return this.red.iadd(this, num); - }; - - BN.prototype.redSub = function redSub (num) { - assert(this.red, 'redSub works only with red numbers'); - return this.red.sub(this, num); - }; - - BN.prototype.redISub = function redISub (num) { - assert(this.red, 'redISub works only with red numbers'); - return this.red.isub(this, num); - }; - - BN.prototype.redShl = function redShl (num) { - assert(this.red, 'redShl works only with red numbers'); - return this.red.shl(this, num); - }; - - 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); - }; - - 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); - }; - - BN.prototype.redSqr = function redSqr () { - assert(this.red, 'redSqr works only with red numbers'); - this.red._verify1(this); - return this.red.sqr(this); - }; - - BN.prototype.redISqr = function redISqr () { - assert(this.red, 'redISqr works only with red numbers'); - this.red._verify1(this); - return this.red.isqr(this); - }; - - // 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); - }; - - BN.prototype.redInvm = function redInvm () { - assert(this.red, 'redInvm works only with red numbers'); - this.red._verify1(this); - return this.red.invm(this); - }; - - // 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); - }; - - BN.prototype.redPow = function redPow (num) { - assert(this.red && !num.red, 'redPow(normalNum)'); - this.red._verify1(this); - return this.red.pow(this, num); - }; - - // Prime numbers with efficient reduction - var primes = { - k256: null, - p224: null, - p192: null, - p25519: null - }; - - // 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); - - this.tmp = this._tmp(); - } - - 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); - - 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(); - } - - return r; - }; - - MPrime.prototype.split = function split (input, out) { - input.iushrn(this.n, 0, out); - }; - - MPrime.prototype.imulK = function imulK (num) { - return num.imul(this.k); - }; - - function K256 () { - MPrime.call( - this, - 'k256', - 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f'); - } - inherits(K256, MPrime); - - K256.prototype.split = function split (input, output) { - // 256 = 9 * 26 + 22 - var mask = 0x3fffff; - - var outLen = Math.min(input.length, 9); - for (var i = 0; i < outLen; i++) { - output.words[i] = input.words[i]; - } - output.length = outLen; - - if (input.length <= 9) { - input.words[0] = 0; - input.length = 1; - return; - } - - // 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; - } - }; - - K256.prototype.imulK = function imulK (num) { - // K = 0x1000003d1 = [ 0x40, 0x3d1 ] - num.words[num.length] = 0; - num.words[num.length + 1] = 0; - num.length += 2; - - // 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); - } - - // Fast length reduction - if (num.words[num.length - 1] === 0) { - num.length--; - if (num.words[num.length - 1] === 0) { - num.length--; - } - } - return num; - }; - - function P224 () { - MPrime.call( - this, - 'p224', - 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001'); - } - inherits(P224, MPrime); - - function P192 () { - MPrime.call( - this, - 'p192', - 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff'); - } - inherits(P192, MPrime); - - function P25519 () { - // 2 ^ 255 - 19 - MPrime.call( - this, - '25519', - '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed'); - } - inherits(P25519, MPrime); - - 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; - - num.words[i] = lo; - carry = hi; - } - if (carry !== 0) { - num.words[num.length++] = carry; - } - 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(); - } else { - throw new Error('Unknown prime ' + name); - } - primes[name] = prime; - - return prime; - }; - - // - // 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; - } - } - - Red.prototype._verify1 = function _verify1 (a) { - assert(a.negative === 0, 'red works only with positives'); - assert(a.red, 'red works only with red numbers'); - }; - - 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'); - }; - - Red.prototype.imod = function imod (a) { - if (this.prime) return this.prime.ireduce(a)._forceRed(this); - return a.umod(this.m)._forceRed(this); - }; - - Red.prototype.neg = function neg (a) { - if (a.isZero()) { - return a.clone(); - } - - return this.m.sub(a)._forceRed(this); - }; - - Red.prototype.add = function add (a, b) { - this._verify2(a, b); - - var res = a.add(b); - if (res.cmp(this.m) >= 0) { - res.isub(this.m); - } - return res._forceRed(this); - }; - - Red.prototype.iadd = function iadd (a, b) { - this._verify2(a, b); - - var res = a.iadd(b); - if (res.cmp(this.m) >= 0) { - res.isub(this.m); - } - return res; - }; - - Red.prototype.sub = function sub (a, b) { - this._verify2(a, b); - - var res = a.sub(b); - if (res.cmpn(0) < 0) { - res.iadd(this.m); - } - return res._forceRed(this); - }; - - Red.prototype.isub = function isub (a, b) { - this._verify2(a, b); - - var res = a.isub(b); - if (res.cmpn(0) < 0) { - res.iadd(this.m); - } - return res; - }; - - Red.prototype.shl = function shl (a, num) { - this._verify1(a); - return this.imod(a.ushln(num)); - }; - - Red.prototype.imul = function imul (a, b) { - this._verify2(a, b); - return this.imod(a.imul(b)); - }; - - Red.prototype.mul = function mul (a, b) { - this._verify2(a, b); - return this.imod(a.mul(b)); - }; - - Red.prototype.isqr = function isqr (a) { - return this.imul(a, a.clone()); - }; - - Red.prototype.sqr = function sqr (a) { - return this.mul(a, a); - }; - - Red.prototype.sqrt = function sqrt (a) { - if (a.isZero()) return a.clone(); - - var mod3 = this.m.andln(3); - assert(mod3 % 2 === 1); - - // Fast case - if (mod3 === 3) { - var pow = this.m.add(new BN(1)).iushrn(2); - return this.pow(a, pow); - } - - // 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()); - - var one = new BN(1).toRed(this); - var nOne = one.redNeg(); - - // 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); - - while (this.pow(z, lpow).cmp(nOne) !== 0) { - z.redIAdd(nOne); - } - - 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)); - - r = r.redMul(b); - c = b.redSqr(); - t = t.redMul(c); - m = i; - } - - return r; - }; - - 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); - } - }; - - Red.prototype.pow = function pow (a, num) { - if (num.isZero()) return new BN(1); - if (num.cmpn(1) === 0) return a.clone(); - - 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); - } - - 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; - } - - current <<= 1; - current |= bit; - currentLen++; - if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue; - - res = this.mul(res, wnd[current]); - currentLen = 0; - current = 0; - } - start = 26; - } - - return res; - }; - - Red.prototype.convertTo = function convertTo (num) { - var r = num.umod(this.m); - - return r === num ? r.clone() : r; - }; - - Red.prototype.convertFrom = function convertFrom (num) { - var res = num.clone(); - res.red = null; - return res; - }; - - // - // Montgomery method engine - // - - BN.mont = function mont (num) { - return new Mont(num); - }; - - function Mont (m) { - Red.call(this, m); - - this.shift = this.m.bitLength(); - if (this.shift % 26 !== 0) { - this.shift += 26 - (this.shift % 26); - } - - this.r = new BN(1).iushln(this.shift); - this.r2 = this.imod(this.r.sqr()); - this.rinv = this.r._invmp(this.m); - - 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); - } - 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); - - 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); - } - - return res._forceRed(this); - }; - - 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); - -},{}],82:[function(require,module,exports){ -var r; - -module.exports = function rand(len) { - if (!r) - r = new Rand(null); - - return r.generate(len); -}; - -function Rand(rand) { - this.rand = rand; -} -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'); - - Rand.prototype._rand = function _rand(n) { - return crypto.randomBytes(n); - }; - } catch (e) { - } -} - -},{"crypto":3}],83:[function(require,module,exports){ -var basex = require('base-x') -var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' - -module.exports = basex(ALPHABET) - -},{"base-x":35}],84:[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) - - 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 - } -} - -}).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 - } - 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":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') - -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":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) - -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":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. - */ - -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) - } - - 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) -} - -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":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') - -var sha = require('sha.js') - -var ZEROS = Buffer.alloc(128) - -function Hmac (alg, key) { - Base.call(this, 'digest') - if (typeof key === 'string') { - key = Buffer.from(key) - } - - var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 - - 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) - } - - 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 - } - this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) - this._hash.update(ipad) -} - -inherits(Hmac, Base) - -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) -} - -},{"./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 - -var Base = require('cipher-base') - -var ZEROS = Buffer.alloc(128) -var blocksize = 64 - -function Hmac (alg, key) { - Base.call(this, 'digest') - if (typeof key === 'string') { - key = Buffer.from(key) - } - - this._alg = alg - this._key = key - - if (key.length > blocksize) { - key = alg(key) - } else if (key.length < blocksize) { - key = Buffer.concat([key, ZEROS], blocksize) - } - - 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 - } - - this._hash = [ipad] -} - -inherits(Hmac, Base) - -Hmac.prototype._update = function (data) { - this._hash.push(data) -} - -Hmac.prototype._final = function () { - var h = this._alg(Buffer.concat(this._hash)) - return this._alg(Buffer.concat([this._opad, h])) -} -module.exports = Hmac - -},{"cipher-base":86,"inherits":121,"safe-buffer":128}],92:[function(require,module,exports){ -var assert = require('assert') -var BigInteger = require('bigi') - -var Point = require('./point') - -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 - - this.infinity = new Point(this, null, null, BigInteger.ZERO) - - // result caching - this.pOverFour = p.add(BigInteger.ONE).shiftRight(2) - - // determine size of p in bytes - this.pLength = Math.floor((this.p.bitLength() + 7) / 8) -} - -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 - - var y = beta - if (beta.isEven() ^ !isOdd) { - y = this.p.subtract(y) // -y % p - } - - return Point.fromAffine(this, x, y) -} - -Curve.prototype.isInfinity = function (Q) { - if (Q === this.infinity) return true - - return Q.z.signum() === 0 && Q.y.signum() !== 0 -} - -Curve.prototype.isOnCurve = function (Q) { - if (this.isInfinity(Q)) return true - - var x = Q.affineX - var y = Q.affineY - var a = this.a - var b = this.b - var p = this.p - - // 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 - - // 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) -} - -/** - * 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') - - // 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') - - return true -} - -module.exports = Curve - -},{"./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" - }, - "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" - } -} - -},{}],94:[function(require,module,exports){ -var Point = require('./point') -var Curve = require('./curve') - -var getCurveByName = require('./names') - -module.exports = { - Curve: Curve, - Point: Point, - getCurveByName: getCurveByName -} - -},{"./curve":92,"./names":95,"./point":96}],95:[function(require,module,exports){ -var BigInteger = require('bigi') - -var curves = require('./curves.json') -var Curve = require('./curve') - -function getCurveByName (name) { - var curve = curves[name] - if (!curve) return null - - 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) - - return new Curve(p, a, b, Gx, Gy, n, h) -} - -module.exports = getCurveByName - -},{"./curve":92,"./curves.json":93,"bigi":39}],96:[function(require,module,exports){ -(function (Buffer){ -var assert = require('assert') -var BigInteger = require('bigi') - -var THREE = BigInteger.valueOf(3) - -function Point (curve, x, y, z) { - assert.notStrictEqual(z, undefined, 'Missing Z coordinate') - - this.curve = curve - this.x = x - this.y = y - this.z = z - this._zInv = null - - this.compressed = true -} - -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) - } -}) - -Point.fromAffine = function (curve, x, y) { - return new Point(curve, x, y, BigInteger.ONE) -} - -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) - - // u = Y2 * Z1 - Y1 * Z2 - var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p) - - if (u.signum() !== 0) return false - - // v = X2 * Z1 - X1 * Z2 - var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p) - - return v.signum() === 0 -} - -Point.prototype.negate = function () { - var y = this.curve.p.subtract(this.y) - - return new Point(this.curve, this.x, y, this.z) -} - -Point.prototype.add = function (b) { - if (this.curve.isInfinity(this)) return b - if (this.curve.isInfinity(b)) return this - - var x1 = this.x - var y1 = this.y - var x2 = b.x - var y2 = b.y - - // 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) - - if (v.signum() === 0) { - if (u.signum() === 0) { - return this.twice() // this == b, so double - } - - return this.curve.infinity // this = -b, so infinity - } - - 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 Point(this.curve, x3, y3, z3) -} - -Point.prototype.twice = function () { - if (this.curve.isInfinity(this)) return this - if (this.y.signum() === 0) return this.curve.infinity - - var x1 = this.x - var y1 = this.y - - var y1z1 = y1.multiply(this.z).mod(this.curve.p) - var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p) - var a = this.curve.a - - // w = 3 * x1^2 + a * z1^2 - var w = x1.square().multiply(THREE) - - if (a.signum() !== 0) { - w = w.add(this.z.square().multiply(a)) - } - - 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) -} - -// 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) - } - } else if (kBit) { - R = R.add(x) - } - --i - } - - return R -} - -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) - - // 0x04 | X | Y - } else { - buffer = new Buffer(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 - -}).call(this,require("buffer").Buffer) -},{"assert":1,"bigi":39,"buffer":5}],97:[function(require,module,exports){ -'use strict'; - -var elliptic = exports; - -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'); - -// Protocols -elliptic.ec = require('./elliptic/ec'); -elliptic.eddsa = require('./elliptic/eddsa'); - -},{"../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'; - -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; - -function BaseCurve(type, conf) { - this.type = type; - this.p = new BN(conf.p, 16); - - // Use Montgomery, when there is no fast reduction for the prime - this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p); - - // 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); - - // Curve configuration, optional - this.n = conf.n && new BN(conf.n, 16); - this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed); - - // Temporary arrays - this._wnafT1 = new Array(4); - this._wnafT2 = new Array(4); - this._wnafT3 = new Array(4); - this._wnafT4 = new Array(4); - - // 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); - } -} -module.exports = BaseCurve; - -BaseCurve.prototype.point = function point() { - throw new Error('Not implemented'); -}; - -BaseCurve.prototype.validate = function validate() { - throw new Error('Not implemented'); -}; - -BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) { - assert(p.precomputed); - var doubles = p._getDoubles(); - - var naf = getNAF(k, 1); - var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1); - I /= 3; - - // 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); - } - - 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; - - // Precompute window - var nafPoints = p._getNAFPoints(w); - w = nafPoints.wnd; - var wnd = nafPoints.points; - - // Get NAF form - var naf = getNAF(k, w); - - // 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); - - 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()); - } - } - 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; - - // 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; - } - - // 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; - } - - var comb = [ - points[a], /* 1 */ - null, /* 3 */ - null, /* 5 */ - points[b] /* 7 */ - ]; - - // 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()); - } - - 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 */ - ]; - - 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; - - naf[a][j] = index[(ja + 1) * 3 + (jb + 1)]; - naf[b][j] = 0; - wnd[a] = comb; - } - } - - var acc = this.jpoint(null, null, null); - var tmp = this._wnafT4; - for (var i = max; i >= 0; i--) { - var k = 0; - - 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; - - 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(); - - 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; - - if (jacobianResult) - return acc; - else - return acc.toP(); -}; - -function BasePoint(curve, type) { - this.curve = curve; - this.type = type; - this.precomputed = null; -} -BaseCurve.BasePoint = BasePoint; - -BasePoint.prototype.eq = function eq(/*other*/) { - throw new Error('Not implemented'); -}; - -BasePoint.prototype.validate = function validate() { - return this.curve.validate(this); -}; - -BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) { - bytes = utils.toArray(bytes, enc); - - var len = this.p.byteLength(); - - // 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); - - var res = this.point(bytes.slice(1, 1 + len), - bytes.slice(1 + len, 1 + 2 * len)); - - 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'); -}; - -BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) { - return this.encode(enc, true); -}; - -BasePoint.prototype._encode = function _encode(compact) { - var len = this.curve.p.byteLength(); - var x = this.getX().toArray('be', len); - - if (compact) - return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x); - - return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ; -}; - -BasePoint.prototype.encode = function encode(enc, compact) { - return utils.encode(this._encode(compact), enc); -}; - -BasePoint.prototype.precompute = function precompute(power) { - if (this.precomputed) - return this; - - 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; - - return this; -}; - -BasePoint.prototype._hasDoubles = function _hasDoubles(k) { - if (!this.precomputed) - return false; - - var doubles = this.precomputed.doubles; - if (!doubles) - return false; - - return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step); -}; - -BasePoint.prototype._getDoubles = function _getDoubles(step, power) { - if (this.precomputed && this.precomputed.doubles) - return this.precomputed.doubles; - - 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 - }; -}; - -BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) { - if (this.precomputed && this.precomputed.naf) - return this.precomputed.naf; - - 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 - }; -}; - -BasePoint.prototype._getBeta = function _getBeta() { - return null; -}; - -BasePoint.prototype.dblp = function dblp(k) { - var r = this; - for (var i = 0; i < k; i++) - r = r.dbl(); - return r; -}; - -},{"../../elliptic":97,"bn.js":81}],99:[function(require,module,exports){ -'use strict'; - -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; - -var assert = elliptic.utils.assert; - -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; - - Base.call(this, 'edwards', conf); - - 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); - - assert(!this.twisted || this.c.fromRed().cmpn(1) === 0); - this.oneC = (conf.c | 0) === 1; -} -inherits(EdwardsCurve, Base); -module.exports = EdwardsCurve; - -EdwardsCurve.prototype._mulA = function _mulA(num) { - if (this.mOneA) - return num.redNeg(); - else - return this.a.redMul(num); -}; - -EdwardsCurve.prototype._mulC = function _mulC(num) { - if (this.oneC) - return num; - else - return this.c.redMul(num); -}; - -// Just for compatibility with Short curve -EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) { - return this.point(x, y, z, t); -}; - -EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); - - 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)); - - var y2 = rhs.redMul(lhs.redInvm()); - var y = y2.redSqrt(); - if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) - throw new Error('invalid point'); - - var isOdd = y.fromRed().isOdd(); - if (odd && !isOdd || !odd && isOdd) - y = y.redNeg(); - - return this.point(x, y); -}; - -EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) { - y = new BN(y, 16); - if (!y.red) - y = y.toRed(this.red); - - // 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()); - - if (x2.cmp(this.zero) === 0) { - if (odd) - throw new Error('invalid point'); - else - return this.point(this.zero, y); - } - - var x = x2.redSqrt(); - if (x.redSqr().redSub(x2).cmp(this.zero) !== 0) - throw new Error('invalid point'); - - if (x.isOdd() !== odd) - x = x.redNeg(); - - return this.point(x, y); -}; - -EdwardsCurve.prototype.validate = function validate(point) { - if (point.isInfinity()) - return true; - - // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2) - point.normalize(); - - 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))); - - return lhs.cmp(rhs) === 0; -}; - -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; - - // 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()); - } - } -} -inherits(Point, Base.BasePoint); - -EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) { - return Point.fromJSON(this, obj); -}; - -EdwardsCurve.prototype.point = function point(x, y, z, t) { - return new Point(this, x, y, z, t); -}; - -Point.fromJSON = function fromJSON(curve, obj) { - return new Point(curve, obj[0], obj[1], obj[2]); -}; - -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; - -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; -}; - -Point.prototype._extDbl = function _extDbl() { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #doubling-dbl-2008-hwcd - // 4M + 4S - - // 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); -}; - -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 - - // 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(); - - 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); - } 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); - } - } 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; - - // Double in extended coordinates - if (this.curve.extended) - return this._extDbl(); - else - return this._projDbl(); -}; - -Point.prototype._extAdd = function _extAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #addition-add-2008-hwcd-3 - // 8M - - // 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); -}; - -Point.prototype._projAdd = function _projAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html - // #addition-add-2008-bbjlp - // #addition-add-2007-bl - // 10M + 1S - - // 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); - } - return this.curve.point(nx, ny, nz); -}; - -Point.prototype.add = function add(p) { - if (this.isInfinity()) - return p; - if (p.isInfinity()) - return this; - - if (this.curve.extended) - return this._extAdd(p); - else - return this._projAdd(p); -}; - -Point.prototype.mul = function mul(k) { - if (this._hasDoubles(k)) - return this.curve._fixedNafMul(this, k); - else - return this.curve._wnafMul(this, k); -}; - -Point.prototype.mulAdd = function mulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false); -}; - -Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true); -}; - -Point.prototype.normalize = function normalize() { - if (this.zOne) - return this; - - // 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; -}; - -Point.prototype.neg = function neg() { - return this.curve.point(this.x.redNeg(), - this.y, - this.z, - this.t && this.t.redNeg()); -}; - -Point.prototype.getX = function getX() { - this.normalize(); - return this.x.fromRed(); -}; - -Point.prototype.getY = function getY() { - this.normalize(); - return this.y.fromRed(); -}; - -Point.prototype.eq = function eq(other) { - return this === other || - this.getX().cmp(other.getX()) === 0 && - this.getY().cmp(other.getY()) === 0; -}; - -Point.prototype.eqXToP = function eqXToP(x) { - var rx = x.toRed(this.curve.red).redMul(this.z); - if (this.x.cmp(rx) === 0) - return true; - - 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; -}; - -// 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'; - -var curve = require('../curve'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; - -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; - -function MontCurve(conf) { - Base.call(this, 'mont', conf); - - 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; - -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(); - - return y.redSqr().cmp(rhs) === 0; -}; - -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; - } 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); - } -} -inherits(Point, Base.BasePoint); - -MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) { - return this.point(utils.toArray(bytes, enc), 1); -}; - -MontCurve.prototype.point = function point(x, z) { - return new Point(this, x, z); -}; - -MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) { - return Point.fromJSON(this, obj); -}; - -Point.prototype.precompute = function precompute() { - // No-op -}; - -Point.prototype._encode = function _encode() { - return this.getX().toArray('be', this.curve.p.byteLength()); -}; - -Point.fromJSON = function fromJSON(curve, obj) { - return new Point(curve, obj[0], obj[1] || curve.one); -}; - -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; - -Point.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.z.cmpn(0) === 0; -}; - -Point.prototype.dbl = function dbl() { - // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3 - // 2M + 2S + 4A - - // 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); -}; - -Point.prototype.add = function add() { - throw new Error('Not supported on Montgomery curve'); -}; - -Point.prototype.diffAdd = function diffAdd(p, diff) { - // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3 - // 4M + 2S + 6A - - // 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); -}; - -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 - - for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1)) - bits.push(t.andln(1)); - - 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; -}; - -Point.prototype.mulAdd = function mulAdd() { - throw new Error('Not supported on Montgomery curve'); -}; - -Point.prototype.jumlAdd = function jumlAdd() { - throw new Error('Not supported on Montgomery curve'); -}; - -Point.prototype.eq = function eq(other) { - return this.getX().cmp(other.getX()) === 0; -}; - -Point.prototype.normalize = function normalize() { - this.x = this.x.redMul(this.z.redInvm()); - this.z = this.curve.one; - return this; -}; - -Point.prototype.getX = function getX() { - // Normalize coordinates - this.normalize(); - - return this.x.fromRed(); -}; - -},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],102:[function(require,module,exports){ -'use strict'; - -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; - -var assert = elliptic.utils.assert; - -function ShortCurve(conf) { - Base.call(this, 'short', conf); - - 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(); - - this.zeroA = this.a.fromRed().cmpn(0) === 0; - this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0; - - // 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; - -ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) { - // No efficient endomorphism - if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1) - return; - - // 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); - } - } - - // 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); - } - - 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(); - - var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv); - - var l1 = ntinv.redAdd(s).fromRed(); - var l2 = ntinv.redSub(s).fromRed(); - return [ l1, l2 ]; -}; - -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); - - // 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 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)); - - if (!a1 && r.cmp(aprxSqrt) < 0) { - a0 = prevR.neg(); - b0 = x1; - a1 = r.neg(); - b1 = x; - } else if (a1 && ++i === 2) { - 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; - } - - // Normalize signs - if (a1.negative) { - a1 = a1.neg(); - b1 = b1.neg(); - } - if (a2.negative) { - a2 = a2.neg(); - b2 = b2.neg(); - } - - return [ - { a: a1, b: b1 }, - { a: a2, b: b2 } - ]; -}; - -ShortCurve.prototype._endoSplit = function _endoSplit(k) { - var basis = this.endo.basis; - var v1 = basis[0]; - var v2 = basis[1]; - - var c1 = v2.b.mul(k).divRound(this.n); - var c2 = v1.b.neg().mul(k).divRound(this.n); - - var p1 = c1.mul(v1.a); - var p2 = c2.mul(v2.a); - var q1 = c1.mul(v1.b); - var q2 = c2.mul(v2.b); - - // Calculate answer - var k1 = k.sub(p1).sub(p2); - var k2 = q1.add(q2).neg(); - return { k1: k1, k2: k2 }; -}; - -ShortCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); - - 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'); - - // 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(); - - return this.point(x, y); -}; - -ShortCurve.prototype.validate = function validate(point) { - if (point.inf) - return true; - - var x = point.x; - var y = point.y; - - 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; -}; - -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(); - - if (split.k1.negative) { - split.k1.ineg(); - p = p.neg(true); - } - if (split.k2.negative) { - split.k2.ineg(); - beta = beta.neg(true); - } - - 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); - - // Clean-up references to points and coefficients - for (var j = 0; j < i * 2; j++) { - npoints[j] = null; - ncoeffs[j] = null; - } - return res; -}; - -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); - } - 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; - } -} -inherits(Point, Base.BasePoint); - -ShortCurve.prototype.point = function point(x, y, isRed) { - return new Point(this, x, y, isRed); -}; - -ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) { - return Point.fromJSON(this, obj, red); -}; - -Point.prototype._getBeta = function _getBeta() { - if (!this.curve.endo) - return; - - var pre = this.precomputed; - if (pre && pre.beta) - return pre.beta; - - 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) - } - }; - } - return beta; -}; - -Point.prototype.toJSON = function toJSON() { - if (!this.precomputed) - return [ this.x, this.y ]; - - 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) - } - } ]; -}; - -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; - - function obj2point(obj) { - return curve.point(obj[0], obj[1], red); - } - - 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; -}; - -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; - -Point.prototype.isInfinity = function isInfinity() { - return this.inf; -}; - -Point.prototype.add = function add(p) { - // O + P = P - if (this.inf) - return p; - - // P + O = P - if (p.inf) - return this; - - // P + P = 2P - if (this.eq(p)) - return this.dbl(); - - // P + (-P) = O - if (this.neg().eq(p)) - return this.curve.point(null, null); - - // P + Q = O - if (this.x.cmp(p.x) === 0) - return this.curve.point(null, null); - - 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); -}; - -Point.prototype.dbl = function dbl() { - if (this.inf) - return this; - - // 2P = O - var ys1 = this.y.redAdd(this.y); - if (ys1.cmpn(0) === 0) - return this.curve.point(null, null); - - var a = this.curve.a; - - var x2 = this.x.redSqr(); - var dyinv = ys1.redInvm(); - var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv); - - 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); -}; - -Point.prototype.getX = function getX() { - return this.x.fromRed(); -}; - -Point.prototype.getY = function getY() { - return this.y.fromRed(); -}; - -Point.prototype.mul = function mul(k) { - k = new BN(k, 16); - - 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); -}; - -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); -}; - -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); -}; - -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); -}; - -Point.prototype.neg = function neg(_precompute) { - if (this.inf) - return this; - - 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; -}; - -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; -}; - -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); - } - 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); - -ShortCurve.prototype.jpoint = function jpoint(x, y, z) { - return new JPoint(this, x, y, z); -}; - -JPoint.prototype.toP = function toP() { - if (this.isInfinity()) - return this.curve.point(null, null); - - var zinv = this.z.redInvm(); - var zinv2 = zinv.redSqr(); - var ax = this.x.redMul(zinv2); - var ay = this.y.redMul(zinv2).redMul(zinv); - - return this.curve.point(ax, ay); -}; - -JPoint.prototype.neg = function neg() { - return this.curve.jpoint(this.x, this.y.redNeg(), this.z); -}; - -JPoint.prototype.add = function add(p) { - // O + P = P - if (this.isInfinity()) - return p; - - // P + O = P - if (p.isInfinity()) - return this; - - // 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)); - - 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 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(p.z).redMul(h); - - return this.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype.mixedAdd = function mixedAdd(p) { - // O + P = P - if (this.isInfinity()) - return p.toJ(); - - // P + O = P - if (p.isInfinity()) - return this; - - // 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 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 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.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype.dblp = function dblp(pow) { - if (pow === 0) - return this; - if (this.isInfinity()) - return this; - if (!pow) - return this.dbl(); - - if (this.curve.zeroA || this.curve.threeA) { - var r = this; - for (var i = 0; i < pow; i++) - r = r.dbl(); - return r; - } - - // 1M + 2S + 1A + N * (4S + 5M + 8A) - // N = 1 => 6M + 6S + 9A - var a = this.curve.a; - var tinv = this.curve.tinv; - - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); - - // 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)); - - 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); - - jx = nx; - jz = nz; - jyd = dny; - } - - return this.curve.jpoint(jx, jyd.redMul(tinv), jz); -}; - -JPoint.prototype.dbl = function dbl() { - if (this.isInfinity()) - return this; - - if (this.curve.zeroA) - return this._zeroDbl(); - else if (this.curve.threeA) - return this._threeDbl(); - 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 - - // 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); - - // 8 * YYYY - var yyyy8 = yyyy.redIAdd(yyyy); - yyyy8 = yyyy8.redIAdd(yyyy8); - yyyy8 = yyyy8.redIAdd(yyyy8); - - // 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 - - // 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(); - - // 8 * C - var c8 = c.redIAdd(c); - c8 = c8.redIAdd(c8); - c8 = c8.redIAdd(c8); - - // 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); - } - - return this.curve.jpoint(nx, ny, nz); -}; - -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 - - // 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 - - // 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); - } - - return this.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype._dbl = function _dbl() { - var a = this.curve.a; - - // 4M + 6S + 10A - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); - - var jx2 = jx.redSqr(); - var jy2 = jy.redSqr(); - - var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); - - 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); - - 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); - - return this.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype.trpl = function trpl() { - if (!this.curve.zeroA) - return this.dbl().add(this); - - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl - // 5M + 10S + ... - - // 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); - - return this.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype.mul = function mul(k, kbase) { - k = new BN(k, kbase); - - return this.curve._wnafMul(this, k); -}; - -JPoint.prototype.eq = function eq(p) { - if (p.type === 'affine') - return this.eq(p.toJ()); - - if (this === p) - return true; - - // 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; - - // 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; -}; - -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; - - 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; - - rx.redIAdd(t); - if (this.x.cmp(rx) === 0) - return true; - } - return false; -}; - -JPoint.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; - -JPoint.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.z.cmpn(0) === 0; -}; - -},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],103:[function(require,module,exports){ -'use strict'; - -var curves = exports; - -var hash = require('hash.js'); -var elliptic = require('../elliptic'); - -var assert = elliptic.utils.assert; - -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; - - assert(this.g.validate(), 'Invalid curve'); - assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O'); -} -curves.PresetCurve = PresetCurve; - -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; - } - }); -} - -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' - ] -}); - -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' - ] -}); - -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' - ] -}); - -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' - ] -}); - -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' - ] -}); - -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', - - // 4/5 - '6666666666666666666666666666666666666666666666666666666666666658' - ] -}); - -var pre; -try { - pre = require('./precomputed/secp256k1'); -} catch (e) { - pre = undefined; -} - -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, - - // Precomputed endomorphism - beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee', - lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72', - basis: [ - { - a: '3086d221a7d46bcde86c90e49284eb15', - b: '-e4437ed6010e88286f547fa90abfe4c3' - }, - { - a: '114ca50f7a8e2f3f657c1108d9d44cfd8', - b: '3086d221a7d46bcde86c90e49284eb15' - } - ], - - gRed: false, - g: [ - '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798', - '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8', - pre - ] -}); - -},{"../elliptic":97,"./precomputed/secp256k1":110,"hash.js":114}],104:[function(require,module,exports){ -'use strict'; - -var BN = require('bn.js'); -var HmacDRBG = require('hmac-drbg'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; - -var KeyPair = require('./key'); -var Signature = require('./signature'); - -function EC(options) { - if (!(this instanceof EC)) - return new EC(options); - - // Shortcut `elliptic.ec(curve-name)` - if (typeof options === 'string') { - assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options); - - options = elliptic.curves[options]; - } - - // Shortcut for `elliptic.ec(elliptic.curves.curveName)` - if (options instanceof elliptic.curves.PresetCurve) - options = { curve: options }; - - this.curve = options.curve.curve; - this.n = this.curve.n; - this.nh = this.n.ushrn(1); - this.g = this.curve.g; - - // Point on curve - this.g = options.curve.g; - this.g.precompute(options.curve.n.bitLength() + 1); - - // Hash for function for DRBG - this.hash = options.hash || options.curve.hash; -} -module.exports = EC; - -EC.prototype.keyPair = function keyPair(options) { - return new KeyPair(this, options); -}; - -EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) { - return KeyPair.fromPrivate(this, priv, enc); -}; - -EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) { - return KeyPair.fromPublic(this, pub, enc); -}; - -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; - - priv.iaddn(1); - return this.keyFromPrivate(priv); - } while (true); -}; - -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; -}; - -EC.prototype.sign = function sign(msg, key, enc, options) { - if (typeof enc === 'object') { - options = enc; - enc = null; - } - if (!options) - options = {}; - - key = this.keyFromPrivate(key, enc); - msg = this._truncateToN(new BN(msg, 16)); - - // Zero-extend key to provide enough entropy - var bytes = this.n.byteLength(); - var bkey = key.getPrivate().toArray('be', bytes); - - // Zero-extend nonce to have the same byte size as N - var nonce = msg.toArray('be', bytes); - - // Instantiate Hmac_DRBG - var drbg = new HmacDRBG({ - hash: this.hash, - entropy: bkey, - nonce: nonce, - pers: options.pers, - persEnc: options.persEnc || 'utf8' - }); - - // Number of bytes to generate - var ns1 = this.n.sub(new BN(1)); - - 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; - - var kp = this.g.mul(k); - if (kp.isInfinity()) - continue; - - var kpX = kp.getX(); - var r = kpX.umod(this.n); - if (r.cmpn(0) === 0) - continue; - - var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg)); - s = s.umod(this.n); - if (s.cmpn(0) === 0) - continue; - - var recoveryParam = (kp.getY().isOdd() ? 1 : 0) | - (kpX.cmp(r) !== 0 ? 2 : 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; - } - - return new Signature({ r: r, s: s, recoveryParam: recoveryParam }); - } -}; - -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'); - - // 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; - - // Validate signature - var sinv = s.invm(this.n); - var u1 = sinv.mul(msg).umod(this.n); - var u2 = sinv.mul(r).umod(this.n); - - if (!this.curve._maxwellTrick) { - var p = this.g.mulAdd(u1, key.getPublic(), u2); - if (p.isInfinity()) - return false; - - return p.getX().umod(this.n).cmp(r) === 0; - } - - // NOTE: Greg Maxwell's trick, inspired by: - // https://git.io/vad3K - - var p = this.g.jmulAdd(u1, key.getPublic(), u2); - if (p.isInfinity()) - return false; - - // 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); -}; - -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); - - var n = this.n; - var e = new BN(msg); - var r = signature.r; - var s = signature.s; - - // 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'); - - // 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); - - var rInv = signature.r.invm(n); - var s1 = n.sub(e).mul(rInv).umod(n); - var s2 = s.mul(rInv).umod(n); - - // 1.6.1 Compute Q = r^-1 (sR - eG) - // Q = r^-1 (sR + -eG) - return this.g.mulAdd(s1, r, s2); -}; - -EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) { - signature = new Signature(signature, enc); - if (signature.recoveryParam !== null) - return signature.recoveryParam; - - for (var i = 0; i < 4; i++) { - var Qprime; - try { - Qprime = this.recoverPubKey(e, signature, i); - } catch (e) { - continue; - } - - if (Qprime.eq(Q)) - return i; - } - 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'; - -var BN = require('bn.js'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; - -function KeyPair(ec, options) { - this.ec = ec; - this.priv = null; - this.pub = null; - - // 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; - -KeyPair.fromPublic = function fromPublic(ec, pub, enc) { - if (pub instanceof KeyPair) - return pub; - - return new KeyPair(ec, { - pub: pub, - pubEnc: enc - }); -}; - -KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) { - if (priv instanceof KeyPair) - return priv; - - return new KeyPair(ec, { - priv: priv, - privEnc: enc - }); -}; - -KeyPair.prototype.validate = function validate() { - var pub = this.getPublic(); - - 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' }; - - return { result: true, reason: null }; -}; - -KeyPair.prototype.getPublic = function getPublic(compact, enc) { - // compact is optional argument - if (typeof compact === 'string') { - enc = compact; - compact = null; - } - - if (!this.pub) - this.pub = this.ec.g.mul(this.priv); - - if (!enc) - return this.pub; - - return this.pub.encode(enc, compact); -}; - -KeyPair.prototype.getPrivate = function getPrivate(enc) { - if (enc === 'hex') - return this.priv.toString(16, 2); - else - return this.priv; -}; - -KeyPair.prototype._importPrivate = function _importPrivate(key, enc) { - this.priv = new BN(key, enc || 16); - - // 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); -}; - -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'); - } - 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(); -}; - -// ECDSA -KeyPair.prototype.sign = function sign(msg, enc, options) { - return this.ec.sign(msg, this, enc, options); -}; - -KeyPair.prototype.verify = function verify(msg, signature) { - return this.ec.verify(msg, signature, this); -}; - -KeyPair.prototype.inspect = function inspect() { - return ''; -}; - -},{"../../elliptic":97,"bn.js":81}],106:[function(require,module,exports){ -'use strict'; - -var BN = require('bn.js'); - -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; - -function Signature(options, enc) { - if (options instanceof Signature) - return options; - - if (this._importDER(options, enc)) - return; - - 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 Position() { - this.place = 0; -} - -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; -} - -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); -} - -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); - } - - this.r = new BN(r); - this.s = new BN(s); - this.recoveryParam = null; - - return true; -}; - -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); -} - -Signature.prototype.toDER = function toDER(enc) { - var r = this.r.toArray(); - var s = this.s.toArray(); - - // Pad values - if (r[0] & 0x80) - r = [ 0 ].concat(r); - // Pad values - if (s[0] & 0x80) - s = [ 0 ].concat(s); - - r = rmPadding(r); - s = rmPadding(s); - - 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); -}; - -},{"../../elliptic":97,"bn.js":81}],107:[function(require,module,exports){ -'use strict'; - -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'); - -function EDDSA(curve) { - assert(curve === 'ed25519', 'only tested with ed25519 so far'); - - if (!(this instanceof EDDSA)) - return new EDDSA(curve); - - var curve = elliptic.curves[curve].curve; - this.curve = curve; - this.g = curve.g; - this.g.precompute(curve.n.bitLength() + 1); - - this.pointClass = curve.point().constructor; - this.encodingLength = Math.ceil(curve.n.bitLength() / 8); - this.hash = hash.sha512; -} - -module.exports = EDDSA; - -/** -* @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 }); -}; - -/** -* @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); -}; - -EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) { - return KeyPair.fromPublic(this, pub); -}; - -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); -}; - -/** -* * 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; -}; - -EDDSA.prototype.decodePoint = function decodePoint(bytes) { - bytes = utils.parseBytes(bytes); - - var lastIx = bytes.length - 1; - var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80); - var xIsOdd = (bytes[lastIx] & 0x80) !== 0; - - var y = utils.intFromLE(normed); - return this.curve.pointFromY(y, xIsOdd); -}; - -EDDSA.prototype.encodeInt = function encodeInt(num) { - return num.toArray('le', this.encodingLength); -}; - -EDDSA.prototype.decodeInt = function decodeInt(bytes) { - return utils.intFromLE(bytes); -}; - -EDDSA.prototype.isPoint = function isPoint(val) { - return val instanceof this.pointClass; -}; - -},{"../../elliptic":97,"./key":108,"./signature":109,"hash.js":114}],108:[function(require,module,exports){ -'use strict'; - -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; -var parseBytes = utils.parseBytes; -var cachedProperty = utils.cachedProperty; - -/** -* @param {EDDSA} eddsa - instance -* @param {Object} params - public/private key parameters -* -* @param {Array} [params.secret] - secret seed bytes -* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms) -* @param {Array} [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); -} - -KeyPair.fromPublic = function fromPublic(eddsa, pub) { - if (pub instanceof KeyPair) - return pub; - return new KeyPair(eddsa, { pub: pub }); -}; - -KeyPair.fromSecret = function fromSecret(eddsa, secret) { - if (secret instanceof KeyPair) - return secret; - return new KeyPair(eddsa, { secret: secret }); -}; - -KeyPair.prototype.secret = function secret() { - return this._secret; -}; - -cachedProperty(KeyPair, 'pubBytes', function pubBytes() { - return this.eddsa.encodePoint(this.pub()); -}); - -cachedProperty(KeyPair, 'pub', function pub() { - if (this._pubBytes) - return this.eddsa.decodePoint(this._pubBytes); - return this.eddsa.g.mul(this.priv()); -}); - -cachedProperty(KeyPair, 'privBytes', function privBytes() { - var eddsa = this.eddsa; - var hash = this.hash(); - var lastIx = eddsa.encodingLength - 1; - - var a = hash.slice(0, eddsa.encodingLength); - a[0] &= 248; - a[lastIx] &= 127; - a[lastIx] |= 64; - - return a; -}); - -cachedProperty(KeyPair, 'priv', function priv() { - return this.eddsa.decodeInt(this.privBytes()); -}); - -cachedProperty(KeyPair, 'hash', function hash() { - return this.eddsa.hash().update(this.secret()).digest(); -}); - -cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() { - return this.hash().slice(this.eddsa.encodingLength); -}); - -KeyPair.prototype.sign = function sign(message) { - assert(this._secret, 'KeyPair can only verify'); - return this.eddsa.sign(message, this); -}; - -KeyPair.prototype.verify = function verify(message, sig) { - return this.eddsa.verify(message, sig, this); -}; - -KeyPair.prototype.getSecret = function getSecret(enc) { - assert(this._secret, 'KeyPair is public only'); - return utils.encode(this.secret(), enc); -}; - -KeyPair.prototype.getPublic = function getPublic(enc) { - return utils.encode(this.pubBytes(), enc); -}; - -module.exports = KeyPair; - -},{"../../elliptic":97}],109:[function(require,module,exports){ -'use strict'; - -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; - -/** -* @param {EDDSA} eddsa - eddsa instance -* @param {Array|Object} sig - -* @param {Array|Point} [sig.R] - R point as Point or bytes -* @param {Array|bn} [sig.S] - S scalar as bn or bytes -* @param {Array} [sig.Rencoded] - R point encoded -* @param {Array} [sig.Sencoded] - S scalar encoded -*/ -function Signature(eddsa, sig) { - this.eddsa = eddsa; - - if (typeof sig !== 'object') - sig = parseBytes(sig); - - if (Array.isArray(sig)) { - sig = { - R: sig.slice(0, eddsa.encodingLength), - S: sig.slice(eddsa.encodingLength) - }; - } - - assert(sig.R && sig.S, 'Signature without R or S'); - - if (eddsa.isPoint(sig.R)) - this._R = sig.R; - if (sig.S instanceof BN) - this._S = sig.S; - - this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded; - this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded; -} - -cachedProperty(Signature, 'S', function S() { - return this.eddsa.decodeInt(this.Sencoded()); -}); - -cachedProperty(Signature, 'R', function R() { - return this.eddsa.decodePoint(this.Rencoded()); -}); - -cachedProperty(Signature, 'Rencoded', function Rencoded() { - return this.eddsa.encodePoint(this.R()); -}); - -cachedProperty(Signature, 'Sencoded', function Sencoded() { - return this.eddsa.encodeInt(this.S()); -}); - -Signature.prototype.toBytes = function toBytes() { - return this.Rencoded().concat(this.Sencoded()); -}; - -Signature.prototype.toHex = function toHex() { - return utils.encode(this.toBytes(), 'hex').toUpperCase(); -}; - -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', - 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-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) -}); \ No newline at end of file diff --git a/src/js/bitcoinjs-3.3.2.js b/src/js/bitcoinjs-3.3.2.js new file mode 100644 index 0000000..de75eaf --- /dev/null +++ b/src/js/bitcoinjs-3.3.2.js @@ -0,0 +1,15157 @@ +(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.bitcoinjs = 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 + * @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/":33}],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, 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('') +} + +},{}],3:[function(require,module,exports){ + +},{}],4:[function(require,module,exports){ +(function (global){ +'use strict'; + +var buffer = require('buffer'); +var Buffer = buffer.Buffer; +var SlowBuffer = buffer.SlowBuffer; +var MAX_LEN = buffer.kMaxLength || 2147483647; +exports.alloc = function alloc(size, fill, encoding) { + if (typeof Buffer.alloc === 'function') { + return Buffer.alloc(size, fill, encoding); + } + if (typeof encoding === 'number') { + throw new TypeError('encoding must not be number'); + } + if (typeof size !== 'number') { + throw new TypeError('size must be a number'); + } + if (size > MAX_LEN) { + throw new RangeError('size is too large'); + } + var enc = encoding; + var _fill = fill; + if (_fill === undefined) { + enc = undefined; + _fill = 0; + } + var buf = new Buffer(size); + if (typeof _fill === 'string') { + var fillBuf = new Buffer(_fill, enc); + var flen = fillBuf.length; + var i = -1; + while (++i < size) { + buf[i] = fillBuf[i % flen]; + } + } else { + buf.fill(_fill); + } + return buf; +} +exports.allocUnsafe = function allocUnsafe(size) { + if (typeof Buffer.allocUnsafe === 'function') { + return Buffer.allocUnsafe(size); + } + if (typeof size !== 'number') { + throw new TypeError('size must be a number'); + } + if (size > MAX_LEN) { + throw new RangeError('size is too large'); + } + return new Buffer(size); +} +exports.from = function from(value, encodingOrOffset, length) { + if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) { + return Buffer.from(value, encodingOrOffset, length); + } + if (typeof value === 'number') { + throw new TypeError('"value" argument must not be a number'); + } + if (typeof value === 'string') { + return new Buffer(value, encodingOrOffset); + } + if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) { + var offset = encodingOrOffset; + if (arguments.length === 1) { + return new Buffer(value); + } + if (typeof offset === 'undefined') { + offset = 0; + } + var len = length; + if (typeof len === 'undefined') { + len = value.byteLength - offset; + } + if (offset >= value.byteLength) { + throw new RangeError('\'offset\' is out of bounds'); + } + if (len > value.byteLength - offset) { + throw new RangeError('\'length\' is out of bounds'); + } + return new Buffer(value.slice(offset, offset + len)); + } + if (Buffer.isBuffer(value)) { + var out = new Buffer(value.length); + value.copy(out, 0, 0, value.length); + return out; + } + if (value) { + if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) { + return new Buffer(value); + } + if (value.type === 'Buffer' && Array.isArray(value.data)) { + return new Buffer(value.data); + } + } + + throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.'); +} +exports.allocUnsafeSlow = function allocUnsafeSlow(size) { + if (typeof Buffer.allocUnsafeSlow === 'function') { + return Buffer.allocUnsafeSlow(size); + } + if (typeof size !== 'number') { + throw new TypeError('size must be a number'); + } + if (size >= MAX_LEN) { + throw new RangeError('size is too large'); + } + return new SlowBuffer(size); +} + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"buffer":5}],5:[function(require,module,exports){ +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @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 (value instanceof ArrayBuffer) { + 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) || string instanceof ArrayBuffer) { + 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.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 +} + +// 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":8}],6:[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":10}],7:[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; +}; + +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; + } + } + } + + 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 (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 true; +}; + +EventEmitter.prototype.addListener = function(type, listener) { + var m; + + 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 + // 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; +}; + +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 { + list.splice(position, 1); + } + + 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; +} + +},{}],8:[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) {} + + 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) +} + +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 + + value = Math.abs(value) + + 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 { + value += rt * Math.pow(2, 1 - eBias) + } + if (value * c >= 2) { + e++ + c /= 2 + } + + 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 { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) + e = 0 + } + } + + 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 +} + +},{}],9:[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 + } +} + +},{}],10:[function(require,module,exports){ +/*! + * Determine if an object is a Buffer + * + * @author Feross Aboukhadijeh + * @license MIT + */ + +// 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) +} + +function isBuffer (obj) { + return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) +} + +// 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)) +} + +},{}],11:[function(require,module,exports){ +var toString = {}.toString; + +module.exports = Array.isArray || function (arr) { + return toString.call(arr) == '[object Array]'; +}; + +},{}],12:[function(require,module,exports){ +(function (process){ +'use strict'; + +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; +} + +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); + }); + } +} + +}).call(this,require('_process')) +},{"_process":13}],13:[function(require,module,exports){ +// shim for using process in browser +var process = module.exports = {}; + +// 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. + +var cachedSetTimeout; +var cachedClearTimeout; + +function defaultSetTimout() { + throw new Error('setTimeout has not been defined'); +} +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); + } + } + + +} +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); + } + } + + + +} +var queue = []; +var draining = false; +var currentQueue; +var queueIndex = -1; + +function cleanUpNextTick() { + if (!draining || !currentQueue) { + return; + } + draining = false; + if (currentQueue.length) { + queue = currentQueue.concat(queue); + } else { + queueIndex = -1; + } + if (queue.length) { + drainQueue(); + } +} + +function drainQueue() { + if (draining) { + return; + } + var timeout = runTimeout(cleanUpNextTick); + draining = true; + + 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); +} + +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); + } +}; + +// 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 = {}; + +function noop() {} + +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; + +process.listeners = function (name) { return [] } + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; +process.umask = function() { return 0; }; + +},{}],14:[function(require,module,exports){ +module.exports = require('./lib/_stream_duplex.js'); + +},{"./lib/_stream_duplex.js":15}],15:[function(require,module,exports){ +// 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. + +'use strict'; + +/**/ + +var objectKeys = Object.keys || function (obj) { + var keys = []; + for (var key in obj) { + keys.push(key); + }return keys; +}; +/**/ + +module.exports = Duplex; + +/**/ +var processNextTick = require('process-nextick-args'); +/**/ + +/**/ +var util = require('core-util-is'); +util.inherits = require('inherits'); +/**/ + +var Readable = require('./_stream_readable'); +var Writable = require('./_stream_writable'); + +util.inherits(Duplex, Readable); + +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]; +} + +function Duplex(options) { + if (!(this instanceof Duplex)) return new Duplex(options); + + Readable.call(this, options); + Writable.call(this, options); + + if (options && options.readable === false) this.readable = false; + + if (options && options.writable === false) this.writable = false; + + this.allowHalfOpen = true; + if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; + + this.once('end', onend); +} + +// 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; + + // no more data can be written. + // But allow more writes to happen in this tick. + processNextTick(onEndNT, this); +} + +function onEndNT(self) { + self.end(); +} + +function forEach(xs, f) { + for (var i = 0, l = xs.length; i < l; i++) { + f(xs[i], i); + } +} +},{"./_stream_readable":17,"./_stream_writable":19,"core-util-is":6,"inherits":9,"process-nextick-args":12}],16:[function(require,module,exports){ +// a passthrough stream. +// basically just the most minimal sort of Transform stream. +// Every written chunk gets output as-is. + +'use strict'; + +module.exports = PassThrough; + +var Transform = require('./_stream_transform'); + +/**/ +var util = require('core-util-is'); +util.inherits = require('inherits'); +/**/ + +util.inherits(PassThrough, Transform); + +function PassThrough(options) { + if (!(this instanceof PassThrough)) return new PassThrough(options); + + Transform.call(this, options); +} + +PassThrough.prototype._transform = function (chunk, encoding, cb) { + cb(null, chunk); +}; +},{"./_stream_transform":18,"core-util-is":6,"inherits":9}],17:[function(require,module,exports){ +(function (process){ +'use strict'; + +module.exports = Readable; + +/**/ +var processNextTick = require('process-nextick-args'); +/**/ + +/**/ +var isArray = require('isarray'); +/**/ + +/**/ +var Duplex; +/**/ + +Readable.ReadableState = ReadableState; + +/**/ +var EE = require('events').EventEmitter; + +var EElistenerCount = function (emitter, type) { + return emitter.listeners(type).length; +}; +/**/ + +/**/ +var Stream = require('./internal/streams/stream'); +/**/ + +var Buffer = require('buffer').Buffer; +/**/ +var bufferShim = require('buffer-shims'); +/**/ + +/**/ +var util = require('core-util-is'); +util.inherits = require('inherits'); +/**/ + +/**/ +var debugUtil = require('util'); +var debug = void 0; +if (debugUtil && debugUtil.debuglog) { + debug = debugUtil.debuglog('stream'); +} else { + debug = function () {}; +} +/**/ + +var BufferList = require('./internal/streams/BufferList'); +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]]; + } +} + +function ReadableState(options, stream) { + Duplex = Duplex || require('./_stream_duplex'); + + options = options || {}; + + // 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; + + if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode; + + // 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; + + // cast to ints. + this.highWaterMark = ~~this.highWaterMark; + + // 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; + + // 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; + + // 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; + + // 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'; + + // when piping, we only care about 'readable' events that happen + // after read()ing all the bytes and not getting any pushback. + this.ranOut = false; + + // 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; + } +} + +function Readable(options) { + Duplex = Duplex || require('./_stream_duplex'); + + if (!(this instanceof Readable)) return new Readable(options); + + this._readableState = new ReadableState(options, this); + + // legacy + this.readable = true; + + if (options && typeof options.read === 'function') this._read = options.read; + + Stream.call(this); +} + +// 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; + + if (!state.objectMode && typeof chunk === 'string') { + encoding = encoding || state.defaultEncoding; + if (encoding !== state.encoding) { + chunk = bufferShim.from(chunk, encoding); + encoding = ''; + } + } + + return readableAddChunk(this, state, chunk, encoding, false); +}; + +// Unshift should *always* be something directly out of read() +Readable.prototype.unshift = function (chunk) { + var state = this._readableState; + return readableAddChunk(this, state, chunk, '', true); +}; + +Readable.prototype.isPaused = function () { + return this._readableState.flowing === false; +}; + +function readableAddChunk(stream, state, chunk, encoding, addToFront) { + var er = chunkInvalid(state, chunk); + if (er) { + stream.emit('error', er); + } else if (chunk === null) { + state.reading = false; + onEofChunk(stream, state); + } else if (state.objectMode || chunk && chunk.length > 0) { + if (state.ended && !addToFront) { + var e = new Error('stream.push() after EOF'); + stream.emit('error', e); + } else if (state.endEmitted && addToFront) { + var _e = new Error('stream.unshift() after end event'); + stream.emit('error', _e); + } else { + var skipAdd; + if (state.decoder && !addToFront && !encoding) { + chunk = state.decoder.write(chunk); + skipAdd = !state.objectMode && chunk.length === 0; + } + + if (!addToFront) state.reading = false; + + // Don't add to the buffer if we've decoded to an empty string chunk and + // we're not in object mode + if (!skipAdd) { + // if we want the data now, just emit it. + 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); + + if (state.needReadable) emitReadable(stream); + } + } + + maybeReadMore(stream, state); + } + } else if (!addToFront) { + state.reading = false; + } + + return needMoreData(state); +} + +// 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); +} + +// 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; +}; + +// 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; +} + +// 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; +} + +// 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; + + if (n !== 0) state.emittedReadable = false; + + // 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; + } + + n = howMuchToRead(n, state); + + // 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; + } + + // 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. + + // if we need a readable event, then we need to do some reading. + var doRead = state.needReadable; + debug('need readable', doRead); + + // 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); + } + + // 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); + } + + var ret; + if (n > 0) ret = fromList(n, state);else ret = null; + + if (ret === null) { + state.needReadable = true; + n = 0; + } else { + state.length -= n; + } + + 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; + + // If we tried to read() past the EOF, then emit end on the next tick. + if (nOrig !== n && state.ended) endReadable(this); + } + + if (ret !== null) this.emit('data', ret); + + return ret; +}; + +function chunkInvalid(state, chunk) { + var er = null; + if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) { + er = new TypeError('Invalid non-string/buffer chunk'); + } + return er; +} + +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; + + // emit 'readable' now to make sure it gets picked up. + emitReadable(stream); +} + +// 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); + } +} + +function emitReadable_(stream) { + debug('emit readable'); + stream.emit('readable'); + flow(stream); +} + +// 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); + } +} + +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; +} + +// 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')); +}; + +Readable.prototype.pipe = function (dest, pipeOpts) { + var src = this; + var state = this._readableState; + + 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); + + var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; + + var endFn = doEnd ? onend : cleanup; + if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn); + + dest.on('unpipe', onunpipe); + function onunpipe(readable) { + debug('onunpipe'); + if (readable === src) { + cleanup(); + } + } + + function onend() { + debug('onend'); + dest.end(); + } + + // 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); + + 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', cleanup); + src.removeListener('data', ondata); + + cleanedUp = true; + + // 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(); + } + + // 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(); + } + } + + // 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); + } + + // Make sure our error handler is attached before userland ones. + prependListener(dest, 'error', onerror); + + // 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 unpipe() { + debug('unpipe'); + src.unpipe(dest); + } + + // tell the dest that it's being piped to + dest.emit('pipe', src); + + // start the flow if it hasn't been started already. + if (!state.flowing) { + debug('pipe resume'); + src.resume(); + } + + return dest; +}; + +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); + } + }; +} + +Readable.prototype.unpipe = function (dest) { + var state = this._readableState; + + // if we're not piping anywhere, then do nothing. + if (state.pipesCount === 0) return this; + + // 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; + + if (!dest) dest = state.pipes; + + // got a match. + state.pipes = null; + state.pipesCount = 0; + state.flowing = false; + if (dest) dest.emit('unpipe', this); + return this; + } + + // slow case. multiple pipe destinations. + + if (!dest) { + // remove all. + var dests = state.pipes; + var len = state.pipesCount; + state.pipes = null; + state.pipesCount = 0; + state.flowing = false; + + for (var i = 0; i < len; i++) { + dests[i].emit('unpipe', this); + }return this; + } + + // try to find the right one. + var index = indexOf(state.pipes, dest); + if (index === -1) return this; + + state.pipes.splice(index, 1); + state.pipesCount -= 1; + if (state.pipesCount === 1) state.pipes = state.pipes[0]; + + dest.emit('unpipe', this); + + return this; +}; + +// 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); + + 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, state); + } + } + } + + return res; +}; +Readable.prototype.addListener = Readable.prototype.on; + +function nReadingNextTick(self) { + debug('readable nexttick read 0'); + self.read(0); +} + +// 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 this; +}; + +function resume(stream, state) { + if (!state.resumeScheduled) { + state.resumeScheduled = true; + processNextTick(resume_, stream, state); + } +} + +function resume_(stream, state) { + if (!state.reading) { + debug('resume read 0'); + stream.read(0); + } + + state.resumeScheduled = false; + state.awaitDrain = 0; + stream.emit('resume'); + flow(stream); + if (state.flowing && !state.reading) stream.read(0); +} + +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 flow(stream) { + var state = stream._readableState; + debug('flow', state.flowing); + while (state.flowing && stream.read() !== null) {} +} + +// 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; + + 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); + } + + self.push(null); + }); + + stream.on('data', function (chunk) { + debug('wrapped data'); + if (state.decoder) chunk = state.decoder.write(chunk); + + // don't skip over falsy values in objectMode + if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; + + var ret = self.push(chunk); + if (!ret) { + paused = true; + stream.pause(); + } + }); + + // 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); + } + } + + // proxy certain important events. + for (var n = 0; n < kProxyEvents.length; n++) { + stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n])); + } + + // 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; +}; + +// exposed for testing purposes only. +Readable._fromList = fromList; + +// 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; + + 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); + } + + return ret; +} + +// 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; +} + +// 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; +} + +// 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 = bufferShim.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 endReadable(stream) { + var state = stream._readableState; + + // 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'); + + if (!state.endEmitted) { + state.ended = true; + processNextTick(endReadableNT, state, stream); + } +} + +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'); + } +} + +function forEach(xs, f) { + for (var i = 0, l = xs.length; i < l; i++) { + f(xs[i], i); + } +} + +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')) +},{"./_stream_duplex":15,"./internal/streams/BufferList":20,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"events":7,"inherits":9,"isarray":11,"process-nextick-args":12,"string_decoder/":22,"util":3}],18:[function(require,module,exports){ +// 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. + +'use strict'; + +module.exports = Transform; + +var Duplex = require('./_stream_duplex'); + +/**/ +var util = require('core-util-is'); +util.inherits = require('inherits'); +/**/ + +util.inherits(Transform, Duplex); + +function TransformState(stream) { + this.afterTransform = function (er, data) { + return afterTransform(stream, er, data); + }; + + this.needTransform = false; + this.transforming = false; + this.writecb = null; + this.writechunk = null; + this.writeencoding = null; +} + +function afterTransform(stream, er, data) { + var ts = stream._transformState; + ts.transforming = false; + + var cb = ts.writecb; + + if (!cb) return stream.emit('error', new Error('no writecb in Transform class')); + + ts.writechunk = null; + ts.writecb = null; + + if (data !== null && data !== undefined) stream.push(data); + + cb(er); + + var rs = stream._readableState; + rs.reading = false; + if (rs.needReadable || rs.length < rs.highWaterMark) { + stream._read(rs.highWaterMark); + } +} + +function Transform(options) { + if (!(this instanceof Transform)) return new Transform(options); + + Duplex.call(this, options); + + this._transformState = new TransformState(this); + + var stream = this; + + // start out asking for a readable event once data is transformed. + this._readableState.needReadable = true; + + // 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; + + if (options) { + if (typeof options.transform === 'function') this._transform = options.transform; + + if (typeof options.flush === 'function') this._flush = options.flush; + } + + // 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); + }); +} + +Transform.prototype.push = function (chunk, encoding) { + this._transformState.needTransform = false; + return Duplex.prototype.push.call(this, chunk, encoding); +}; + +// 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'); +}; + +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); + } +}; + +// 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; + + 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; + } +}; + +function done(stream, er, data) { + if (er) return stream.emit('error', er); + + if (data !== null && data !== undefined) stream.push(data); + + // 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; + + if (ws.length) throw new Error('Calling transform done when ws.length != 0'); + + if (ts.transforming) throw new Error('Calling transform done when still transforming'); + + return stream.push(null); +} +},{"./_stream_duplex":15,"core-util-is":6,"inherits":9}],19:[function(require,module,exports){ +(function (process){ +// A bit simpler than readable streams. +// Implement an async ._write(chunk, encoding, cb), and it'll handle all +// the drain event emission and buffering. + +'use strict'; + +module.exports = Writable; + +/**/ +var processNextTick = require('process-nextick-args'); +/**/ + +/**/ +var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick; +/**/ + +/**/ +var Duplex; +/**/ + +Writable.WritableState = WritableState; + +/**/ +var util = require('core-util-is'); +util.inherits = require('inherits'); +/**/ + +/**/ +var internalUtil = { + deprecate: require('util-deprecate') +}; +/**/ + +/**/ +var Stream = require('./internal/streams/stream'); +/**/ + +var Buffer = require('buffer').Buffer; +/**/ +var bufferShim = require('buffer-shims'); +/**/ + +util.inherits(Writable, Stream); + +function nop() {} + +function WriteReq(chunk, encoding, cb) { + this.chunk = chunk; + this.encoding = encoding; + this.callback = cb; + this.next = null; +} + +function WritableState(options, stream) { + Duplex = Duplex || require('./_stream_duplex'); + + options = options || {}; + + // object stream flag to indicate whether or not this stream + // contains buffers or objects. + this.objectMode = !!options.objectMode; + + if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode; + + // 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; + + // cast to ints. + this.highWaterMark = ~~this.highWaterMark; + + // 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; + + // 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; + + // 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'; + + // 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; + + // a flag to see when we're in the middle of a write. + this.writing = false; + + // when true all writes will be buffered until .uncork() call + this.corked = 0; + + // 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; + + // 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; + + // the callback that's passed to _write(chunk,cb) + this.onwrite = function (er) { + onwrite(stream, er); + }; + + // the callback that the user supplies to write(chunk,encoding,cb) + this.writecb = null; + + // the amount that is being written when _write is called. + this.writelen = 0; + + this.bufferedRequest = null; + this.lastBufferedRequest = null; + + // number of pending user-supplied write callbacks + // this must be 0 before 'finish' can be emitted + this.pendingcb = 0; + + // emit prefinish if the only thing we're waiting for is _write cbs + // This is relevant for synchronous Transform streams + this.prefinished = false; + + // True if the error was already emitted and should not be thrown again + this.errorEmitted = false; + + // count buffered requests + this.bufferedRequestCount = 0; + + // allocate the first CorkedRequest, there is always + // one allocated and free to use, and we maintain at most two + this.corkedRequestsFree = new CorkedRequest(this); +} + +WritableState.prototype.getBuffer = function getBuffer() { + var current = this.bufferedRequest; + var out = []; + while (current) { + out.push(current); + current = current.next; + } + return out; +}; + +(function () { + try { + Object.defineProperty(WritableState.prototype, 'buffer', { + get: internalUtil.deprecate(function () { + return this.getBuffer(); + }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.') + }); + } catch (_) {} +})(); + +// 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; + + return object && object._writableState instanceof WritableState; + } + }); +} else { + realHasInstance = function (object) { + return object instanceof this; + }; +} + +function Writable(options) { + Duplex = Duplex || require('./_stream_duplex'); + + // 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); + } + + this._writableState = new WritableState(options, this); + + // legacy. + this.writable = true; + + if (options) { + if (typeof options.write === 'function') this._write = options.write; + + if (typeof options.writev === 'function') this._writev = options.writev; + } + + Stream.call(this); +} + +// Otherwise people can pipe Writable streams, which is just wrong. +Writable.prototype.pipe = function () { + this.emit('error', new Error('Cannot pipe, not readable')); +}; + +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); +} + +// 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; + + 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'); + } + if (er) { + stream.emit('error', er); + processNextTick(cb, er); + valid = false; + } + return valid; +} + +Writable.prototype.write = function (chunk, encoding, cb) { + var state = this._writableState; + var ret = false; + var isBuf = Buffer.isBuffer(chunk); + + if (typeof encoding === 'function') { + cb = encoding; + encoding = null; + } + + if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; + + if (typeof cb !== 'function') cb = nop; + + if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { + state.pendingcb++; + ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); + } + + return ret; +}; + +Writable.prototype.cork = function () { + var state = this._writableState; + + state.corked++; +}; + +Writable.prototype.uncork = function () { + var state = this._writableState; + + if (state.corked) { + state.corked--; + + if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); + } +}; + +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; +}; + +function decodeChunk(state, chunk, encoding) { + if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { + chunk = bufferShim.from(chunk, encoding); + } + return chunk; +} + +// 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) { + chunk = decodeChunk(state, chunk, encoding); + if (Buffer.isBuffer(chunk)) encoding = 'buffer'; + } + var len = state.objectMode ? 1 : chunk.length; + + state.length += len; + + var ret = state.length < state.highWaterMark; + // we must ensure that previous needDrain will not be reset to false. + if (!ret) state.needDrain = true; + + if (state.writing || state.corked) { + var last = state.lastBufferedRequest; + state.lastBufferedRequest = new WriteReq(chunk, encoding, cb); + if (last) { + last.next = state.lastBufferedRequest; + } else { + state.bufferedRequest = state.lastBufferedRequest; + } + state.bufferedRequestCount += 1; + } else { + doWrite(stream, state, false, len, chunk, encoding, cb); + } + + return ret; +} + +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; +} + +function onwriteError(stream, state, sync, er, cb) { + --state.pendingcb; + if (sync) processNextTick(cb, er);else cb(er); + + stream._writableState.errorEmitted = true; + stream.emit('error', er); +} + +function onwriteStateUpdate(state) { + state.writing = false; + state.writecb = null; + state.length -= state.writelen; + state.writelen = 0; +} + +function onwrite(stream, er) { + var state = stream._writableState; + var sync = state.sync; + var cb = state.writecb; + + onwriteStateUpdate(state); + + 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) { + /**/ + asyncWrite(afterWrite, stream, state, finished, cb); + /**/ + } else { + afterWrite(stream, state, finished, cb); + } + } +} + +function afterWrite(stream, state, finished, cb) { + if (!finished) onwriteDrain(stream, state); + state.pendingcb--; + cb(); + finishMaybe(stream, state); +} + +// 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'); + } +} + +// if there's something in the buffer waiting, then process it +function clearBuffer(stream, state) { + state.bufferProcessing = true; + var entry = state.bufferedRequest; + + 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 count = 0; + while (entry) { + buffer[count] = entry; + entry = entry.next; + count += 1; + } + + doWrite(stream, state, true, state.length, buffer, '', holder.finish); + + // 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; + + 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; + } + } + + if (entry === null) state.lastBufferedRequest = null; + } + + state.bufferedRequestCount = 0; + state.bufferedRequest = entry; + state.bufferProcessing = false; +} + +Writable.prototype._write = function (chunk, encoding, cb) { + cb(new Error('_write() is not implemented')); +}; + +Writable.prototype._writev = null; + +Writable.prototype.end = function (chunk, encoding, cb) { + var state = this._writableState; + + if (typeof chunk === 'function') { + cb = chunk; + chunk = null; + encoding = null; + } else if (typeof encoding === 'function') { + cb = encoding; + encoding = null; + } + + if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); + + // .end() fully uncorks + if (state.corked) { + state.corked = 1; + this.uncork(); + } + + // ignore unnecessary end() calls. + if (!state.ending && !state.finished) endWritable(this, state, cb); +}; + +function needFinish(state) { + return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; +} + +function prefinish(stream, state) { + if (!state.prefinished) { + state.prefinished = true; + stream.emit('prefinish'); + } +} + +function finishMaybe(stream, state) { + var need = needFinish(state); + if (need) { + if (state.pendingcb === 0) { + prefinish(stream, state); + state.finished = true; + stream.emit('finish'); + } else { + prefinish(stream, state); + } + } + return need; +} + +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; +} + +// 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; + + this.next = null; + this.entry = null; + this.finish = function (err) { + var entry = _this.entry; + _this.entry = null; + while (entry) { + var cb = entry.callback; + state.pendingcb--; + cb(err); + entry = entry.next; + } + if (state.corkedRequestsFree) { + state.corkedRequestsFree.next = _this; + } else { + state.corkedRequestsFree = _this; + } + }; +} +}).call(this,require('_process')) +},{"./_stream_duplex":15,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"inherits":9,"process-nextick-args":12,"util-deprecate":30}],20:[function(require,module,exports){ +'use strict'; + +var Buffer = require('buffer').Buffer; +/**/ +var bufferShim = require('buffer-shims'); +/**/ + +module.exports = BufferList; + +function BufferList() { + this.head = null; + this.tail = null; + this.length = 0; +} + +BufferList.prototype.push = function (v) { + var entry = { data: v, next: null }; + if (this.length > 0) this.tail.next = entry;else this.head = entry; + this.tail = entry; + ++this.length; +}; + +BufferList.prototype.unshift = function (v) { + var entry = { data: v, next: this.head }; + if (this.length === 0) this.tail = entry; + this.head = entry; + ++this.length; +}; + +BufferList.prototype.shift = function () { + 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; +}; + +BufferList.prototype.clear = function () { + this.head = this.tail = null; + this.length = 0; +}; + +BufferList.prototype.join = function (s) { + if (this.length === 0) return ''; + var p = this.head; + var ret = '' + p.data; + while (p = p.next) { + ret += s + p.data; + }return ret; +}; + +BufferList.prototype.concat = function (n) { + if (this.length === 0) return bufferShim.alloc(0); + if (this.length === 1) return this.head.data; + var ret = bufferShim.allocUnsafe(n >>> 0); + var p = this.head; + var i = 0; + while (p) { + p.data.copy(ret, i); + i += p.data.length; + p = p.next; + } + return ret; +}; +},{"buffer":5,"buffer-shims":4}],21:[function(require,module,exports){ +module.exports = require('events').EventEmitter; + +},{"events":7}],22:[function(require,module,exports){ +'use strict'; + +var Buffer = require('safe-buffer').Buffer; + +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; + } +}; + +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; + } + } +}; + +// 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; +} + +// 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); +} + +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 || ''; +}; + +StringDecoder.prototype.end = utf8End; + +// Returns only complete characters in a Buffer +StringDecoder.prototype.text = utf8Text; + +// 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; +}; + +// 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; +} + +// 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; +} + +// 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); + } + } + } +} + +// 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; +} + +// 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); +} + +// 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; +} + +// 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); +} + +// 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); + } + return r; +} + +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); +} + +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; +} + +// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) +function simpleWrite(buf) { + return buf.toString(this.encoding); +} + +function simpleEnd(buf) { + return buf && buf.length ? this.write(buf) : ''; +} +},{"safe-buffer":27}],23:[function(require,module,exports){ +module.exports = require('./readable').PassThrough + +},{"./readable":24}],24:[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'); + +},{"./lib/_stream_duplex.js":15,"./lib/_stream_passthrough.js":16,"./lib/_stream_readable.js":17,"./lib/_stream_transform.js":18,"./lib/_stream_writable.js":19}],25:[function(require,module,exports){ +module.exports = require('./readable').Transform + +},{"./readable":24}],26:[function(require,module,exports){ +module.exports = require('./lib/_stream_writable.js'); + +},{"./lib/_stream_writable.js":19}],27:[function(require,module,exports){ +module.exports = require('buffer') + +},{"buffer":5}],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. + +module.exports = Stream; + +var EE = require('events').EventEmitter; +var inherits = require('inherits'); + +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'); + +// Backwards-compat with node 0.4.x +Stream.Stream = Stream; + + + +// old-style streams. Note that the pipe method (the only relevant +// part of this class) is overridden in the Readable class. + +function Stream() { + EE.call(this); +} + +Stream.prototype.pipe = function(dest, options) { + var source = this; + + function ondata(chunk) { + if (dest.writable) { + if (false === dest.write(chunk) && source.pause) { + source.pause(); + } + } + } + + source.on('data', ondata); + + function ondrain() { + if (source.readable && source.resume) { + source.resume(); + } + } + + dest.on('drain', ondrain); + + // 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); + } + + var didOnEnd = false; + function onend() { + if (didOnEnd) return; + didOnEnd = true; + + dest.end(); + } + + + function onclose() { + if (didOnEnd) return; + didOnEnd = true; + + if (typeof dest.destroy === 'function') dest.destroy(); + } + + // 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. + } + } + + source.on('error', onerror); + dest.on('error', onerror); + + // remove all the event listeners that were added. + function cleanup() { + source.removeListener('data', ondata); + dest.removeListener('drain', ondrain); + + source.removeListener('end', onend); + source.removeListener('close', onclose); + + source.removeListener('error', onerror); + dest.removeListener('error', onerror); + + source.removeListener('end', cleanup); + source.removeListener('close', cleanup); + + dest.removeListener('close', cleanup); + } + + source.on('end', cleanup); + source.on('close', cleanup); + + dest.on('close', cleanup); + + dest.emit('pipe', source); + + // Allow for unix-like usage: A.pipe(B).pipe(C) + return dest; +}; + +},{"events":7,"inherits":9,"readable-stream/duplex.js":14,"readable-stream/passthrough.js":23,"readable-stream/readable.js":24,"readable-stream/transform.js":25,"readable-stream/writable.js":26}],29:[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 Buffer = require('buffer').Buffer; + +var isBufferEncoding = Buffer.isEncoding + || function(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; + } + } + + +function assertEncoding(encoding) { + if (encoding && !isBufferEncoding(encoding)) { + throw new Error('Unknown encoding: ' + encoding); + } +} + +// StringDecoder provides an interface for efficiently splitting a series of +// buffers into a series of JS strings without breaking apart multi-byte +// characters. CESU-8 is handled as part of the UTF-8 encoding. +// +// @TODO Handling all encodings inside a single object makes it very difficult +// to reason about this code, so it should be split up in the future. +// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code +// points as used by CESU-8. +var StringDecoder = exports.StringDecoder = function(encoding) { + this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, ''); + assertEncoding(encoding); + switch (this.encoding) { + case 'utf8': + // CESU-8 represents each of Surrogate Pair by 3-bytes + this.surrogateSize = 3; + break; + case 'ucs2': + case 'utf16le': + // UTF-16 represents each of Surrogate Pair by 2-bytes + this.surrogateSize = 2; + this.detectIncompleteChar = utf16DetectIncompleteChar; + break; + case 'base64': + // Base-64 stores 3 bytes in 4 chars, and pads the remainder. + this.surrogateSize = 3; + this.detectIncompleteChar = base64DetectIncompleteChar; + break; + default: + this.write = passThroughWrite; + return; + } + + // Enough space to store all bytes of a single character. UTF-8 needs 4 + // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate). + this.charBuffer = new Buffer(6); + // Number of bytes received for the current incomplete multi-byte character. + this.charReceived = 0; + // Number of bytes expected for the current incomplete multi-byte character. + this.charLength = 0; +}; + + +// write decodes the given buffer and returns it as JS string that is +// guaranteed to not contain any partial multi-byte characters. Any partial +// character found at the end of the buffer is buffered up, and will be +// returned when calling write again with the remaining bytes. +// +// Note: Converting a Buffer containing an orphan surrogate to a String +// currently works, but converting a String to a Buffer (via `new Buffer`, or +// Buffer#write) will replace incomplete surrogates with the unicode +// replacement character. See https://codereview.chromium.org/121173009/ . +StringDecoder.prototype.write = function(buffer) { + var charStr = ''; + // if our last write ended with an incomplete multibyte character + while (this.charLength) { + // determine how many remaining bytes this buffer has to offer for this char + var available = (buffer.length >= this.charLength - this.charReceived) ? + this.charLength - this.charReceived : + buffer.length; + + // add the new bytes to the char buffer + buffer.copy(this.charBuffer, this.charReceived, 0, available); + this.charReceived += available; + + if (this.charReceived < this.charLength) { + // still not enough chars in this buffer? wait for more ... + return ''; + } + + // remove bytes belonging to the current character from the buffer + buffer = buffer.slice(available, buffer.length); + + // get the character that was split + charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding); + + // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character + var charCode = charStr.charCodeAt(charStr.length - 1); + if (charCode >= 0xD800 && charCode <= 0xDBFF) { + this.charLength += this.surrogateSize; + charStr = ''; + continue; + } + this.charReceived = this.charLength = 0; + + // if there are no more bytes in this buffer, just emit our char + if (buffer.length === 0) { + return charStr; + } + break; + } + + // determine and set charLength / charReceived + this.detectIncompleteChar(buffer); + + var end = buffer.length; + if (this.charLength) { + // buffer the incomplete character bytes we got + buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end); + end -= this.charReceived; + } + + charStr += buffer.toString(this.encoding, 0, end); + + var end = charStr.length - 1; + var charCode = charStr.charCodeAt(end); + // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character + if (charCode >= 0xD800 && charCode <= 0xDBFF) { + var size = this.surrogateSize; + this.charLength += size; + this.charReceived += size; + this.charBuffer.copy(this.charBuffer, size, 0, size); + buffer.copy(this.charBuffer, 0, 0, size); + return charStr.substring(0, end); + } + + // or just emit the charStr + return charStr; +}; + +// detectIncompleteChar determines if there is an incomplete UTF-8 character at +// the end of the given buffer. If so, it sets this.charLength to the byte +// length that character, and sets this.charReceived to the number of bytes +// that are available for this character. +StringDecoder.prototype.detectIncompleteChar = function(buffer) { + // determine how many bytes we have to check at the end of this buffer + var i = (buffer.length >= 3) ? 3 : buffer.length; + + // Figure out if one of the last i bytes of our buffer announces an + // incomplete char. + for (; i > 0; i--) { + var c = buffer[buffer.length - i]; + + // See http://en.wikipedia.org/wiki/UTF-8#Description + + // 110XXXXX + if (i == 1 && c >> 5 == 0x06) { + this.charLength = 2; + break; + } + + // 1110XXXX + if (i <= 2 && c >> 4 == 0x0E) { + this.charLength = 3; + break; + } + + // 11110XXX + if (i <= 3 && c >> 3 == 0x1E) { + this.charLength = 4; + break; + } + } + this.charReceived = i; +}; + +StringDecoder.prototype.end = function(buffer) { + var res = ''; + if (buffer && buffer.length) + res = this.write(buffer); + + if (this.charReceived) { + var cr = this.charReceived; + var buf = this.charBuffer; + var enc = this.encoding; + res += buf.slice(0, cr).toString(enc); + } + + return res; +}; + +function passThroughWrite(buffer) { + return buffer.toString(this.encoding); +} + +function utf16DetectIncompleteChar(buffer) { + this.charReceived = buffer.length % 2; + this.charLength = this.charReceived ? 2 : 0; +} + +function base64DetectIncompleteChar(buffer) { + this.charReceived = buffer.length % 3; + this.charLength = this.charReceived ? 3 : 0; +} + +},{"buffer":5}],30:[function(require,module,exports){ +(function (global){ + +/** + * Module exports. + */ + +module.exports = deprecate; + +/** + * 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 + */ + +function deprecate (fn, msg) { + if (config('noDeprecation')) { + return fn; + } + + 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 deprecated; +} + +/** + * Checks `localStorage` for boolean values for the given `name`. + * + * @param {String} name + * @returns {Boolean} + * @api private + */ + +function config (name) { + // accessing global.localStorage can trigger a DOMException in sandboxed iframes + try { + if (!global.localStorage) return false; + } catch (_) { + return false; + } + var val = global.localStorage[name]; + if (null == val) return false; + return String(val).toLowerCase() === 'true'; +} + +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],31:[function(require,module,exports){ +arguments[4][9][0].apply(exports,arguments) +},{"dup":9}],32:[function(require,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; +} +},{}],33:[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. + +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } + + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; +}; + + +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; + } + + if (process.noDeprecation === true) { + return fn; + } + + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); + } + + return deprecated; +}; + + +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; + } else { + debugs[set] = function() {}; + } + } + return debugs[set]; +}; + + +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); +} +exports.inspect = inspect; + + +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] +}; + +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' +}; + + +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; + + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; + } else { + return str; + } +} + + +function stylizeNoColor(str, styleType) { + return str; +} + + +function arrayToHash(array) { + var hash = {}; + + array.forEach(function(val, idx) { + hash[val] = true; + }); + + return hash; +} + + +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); + } + return ret; + } + + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; + } + + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); + + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } + + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } + + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); + } + } + + var base = '', array = false, braces = ['{', '}']; + + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; + } + + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; + } + + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); + } + + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } + + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } + + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } + + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } + + ctx.seen.push(value); + + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } + + ctx.seen.pop(); + + return reduceToSingleString(output, base, braces); +} + + +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); + } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} + + +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} + + +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); + } else { + output.push(''); + } + } + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; +} + + +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); + } else { + str = ctx.stylize('[Getter]', 'special'); + } + } else { + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); + } + } + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } + } + + return name + ': ' + str; +} + + +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); + + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + } + + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; +} + + +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); +} +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 isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; + +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; + +function isError(e) { + return isObject(e) && + (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 = require('./support/isBuffer'); + +function objectToString(o) { + return Object.prototype.toString.call(o); +} + + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} + + +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; + +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} + + +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +}; + + +/** + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = require('inherits'); + +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; + + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; + } + return origin; +}; + +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(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){ +let bitcoin = require('bitcoinjs-lib'); + +module.exports = { + bitcoin +} + +},{"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 +// 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":101}],36:[function(require,module,exports){ +'use strict' +var ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l' + +// pre-compute lookup table +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) { + var b = pre >> 25 + return ((pre & 0x1FFFFFF) << 5) ^ + (-((b >> 0) & 1) & 0x3b6a57b2) ^ + (-((b >> 1) & 1) & 0x26508e6d) ^ + (-((b >> 2) & 1) & 0x1ea119fa) ^ + (-((b >> 3) & 1) & 0x3d4233dd) ^ + (-((b >> 4) & 1) & 0x2a1462b3) +} + +function prefixChk (prefix) { + 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 (i = 0; i < prefix.length; ++i) { + var v = prefix.charCodeAt(i) + chk = polymodStep(chk) ^ (v & 0x1f) + } + return chk +} + +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 + 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 (i = 0; i < 6; ++i) { + chk = polymodStep(chk) + } + chk ^= 1 + + for (i = 0; i < 6; ++i) { + var v = (chk >> ((5 - i) * 5)) & 0x1f + result += ALPHABET.charAt(v) + } + + return result +} + +function decode (str, LIMIT) { + LIMIT = LIMIT || 90 + if (str.length < 8) throw new TypeError(str + ' too short') + if (str.length > LIMIT) throw new TypeError('Exceeds length limit') + + // don't allow mixed case + var lowered = str.toLowerCase() + var uppered = str.toUpperCase() + if (str !== lowered && str !== uppered) throw new Error('Mixed-case string ' + str) + str = lowered + + 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) + + var prefix = str.slice(0, split) + var wordChars = str.slice(split + 1) + if (wordChars.length < 6) throw new Error('Data too short') + + 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 + + // not in the checksum? + if (i + 6 >= wordChars.length) continue + words.push(v) + } + + if (chk !== 1) throw new Error('Invalid checksum for ' + str) + return { prefix: prefix, words: words } +} + +function convert (data, inBits, outBits, pad) { + var value = 0 + var bits = 0 + var maxV = (1 << outBits) - 1 + + var result = [] + for (var i = 0; i < data.length; ++i) { + value = (value << inBits) | data[i] + bits += inBits + + while (bits >= outBits) { + bits -= outBits + result.push((value >> bits) & maxV) + } + } + + if (pad) { + if (bits > 0) { + result.push((value << (outBits - bits)) & maxV) + } + } else { + if (bits >= inBits) throw new Error('Excess padding') + if ((value << (outBits - bits)) & maxV) throw new Error('Non-zero padding') + } + + return result +} + +function toWords (bytes) { + return convert(bytes, 8, 5, true) +} + +function fromWords (words) { + return convert(words, 5, 8, false) +} + +module.exports = { + decode: decode, + encode: encode, + toWords: toWords, + fromWords: fromWords +} + +},{}],37:[function(require,module,exports){ +// (public) Constructor +function BigInteger(a, b, c) { + if (!(this instanceof BigInteger)) + return new BigInteger(a, b, c) + + if (a != null) { + if ("number" == typeof a) this.fromNumber(a, b, c) + else if (b == null && "string" != typeof a) this.fromString(a, 256) + else this.fromString(a, b) + } +} + +var proto = BigInteger.prototype + +// duck-typed isBigInteger +proto.__bigi = require('../package.json').version +BigInteger.isBigInteger = function (obj, check_ver) { + return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi) +} + +// Bits per digit +var dbits + +// am: Compute w_j += (x*this_i), propagate carries, +// c is initial carry, returns final carry. +// c < 3*dvalue, x < 2*dvalue, this_i < dvalue +// We need to select the fastest one that works in this environment. + +// am1: use a single mult and divide to get the high bits, +// max digit bits should be 26 because +// max internal value = 2*dvalue^2-2*dvalue (< 2^53) +function am1(i, x, w, j, c, n) { + while (--n >= 0) { + var v = x * this[i++] + w[j] + c + c = Math.floor(v / 0x4000000) + w[j++] = v & 0x3ffffff + } + return c +} +// am2 avoids a big mult-and-extract completely. +// Max digit bits should be <= 30 because we do bitwise ops +// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31) +function am2(i, x, w, j, c, n) { + var xl = x & 0x7fff, + xh = x >> 15 + while (--n >= 0) { + var l = this[i] & 0x7fff + var h = this[i++] >> 15 + var m = xh * l + h * xl + l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff) + c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30) + w[j++] = l & 0x3fffffff + } + return c +} +// Alternately, set max digit bits to 28 since some +// browsers slow down when dealing with 32-bit numbers. +function am3(i, x, w, j, c, n) { + var xl = x & 0x3fff, + xh = x >> 14 + while (--n >= 0) { + var l = this[i] & 0x3fff + var h = this[i++] >> 14 + var m = xh * l + h * xl + l = xl * l + ((m & 0x3fff) << 14) + w[j] + c + c = (l >> 28) + (m >> 14) + xh * h + w[j++] = l & 0xfffffff + } + return c +} + +// wtf? +BigInteger.prototype.am = am1 +dbits = 26 + +BigInteger.prototype.DB = dbits +BigInteger.prototype.DM = ((1 << dbits) - 1) +var DV = BigInteger.prototype.DV = (1 << dbits) + +var BI_FP = 52 +BigInteger.prototype.FV = Math.pow(2, BI_FP) +BigInteger.prototype.F1 = BI_FP - dbits +BigInteger.prototype.F2 = 2 * dbits - BI_FP + +// Digit conversions +var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz" +var BI_RC = new Array() +var rr, vv +rr = "0".charCodeAt(0) +for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv +rr = "a".charCodeAt(0) +for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv +rr = "A".charCodeAt(0) +for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv + +function int2char(n) { + return BI_RM.charAt(n) +} + +function intAt(s, i) { + var c = BI_RC[s.charCodeAt(i)] + return (c == null) ? -1 : c +} + +// (protected) copy this to r +function bnpCopyTo(r) { + for (var i = this.t - 1; i >= 0; --i) r[i] = this[i] + r.t = this.t + r.s = this.s +} + +// (protected) set from integer value x, -DV <= x < DV +function bnpFromInt(x) { + this.t = 1 + this.s = (x < 0) ? -1 : 0 + if (x > 0) this[0] = x + else if (x < -1) this[0] = x + DV + else this.t = 0 +} + +// return bigint initialized to value +function nbv(i) { + var r = new BigInteger() + r.fromInt(i) + return r +} + +// (protected) set from string and radix +function bnpFromString(s, b) { + var self = this + + var k + if (b == 16) k = 4 + else if (b == 8) k = 3 + else if (b == 256) k = 8; // byte array + else if (b == 2) k = 1 + else if (b == 32) k = 5 + else if (b == 4) k = 2 + else { + self.fromRadix(s, b) + return + } + self.t = 0 + self.s = 0 + var i = s.length, + mi = false, + sh = 0 + while (--i >= 0) { + var x = (k == 8) ? s[i] & 0xff : intAt(s, i) + if (x < 0) { + if (s.charAt(i) == "-") mi = true + continue + } + mi = false + if (sh == 0) + self[self.t++] = x + else if (sh + k > self.DB) { + self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh + self[self.t++] = (x >> (self.DB - sh)) + } else + self[self.t - 1] |= x << sh + sh += k + if (sh >= self.DB) sh -= self.DB + } + if (k == 8 && (s[0] & 0x80) != 0) { + self.s = -1 + if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh + } + self.clamp() + if (mi) BigInteger.ZERO.subTo(self, self) +} + +// (protected) clamp off excess high words +function bnpClamp() { + var c = this.s & this.DM + while (this.t > 0 && this[this.t - 1] == c)--this.t +} + +// (public) return string representation in given radix +function bnToString(b) { + var self = this + if (self.s < 0) return "-" + self.negate() + .toString(b) + var k + if (b == 16) k = 4 + else if (b == 8) k = 3 + else if (b == 2) k = 1 + else if (b == 32) k = 5 + else if (b == 4) k = 2 + else return self.toRadix(b) + var km = (1 << k) - 1, + d, m = false, + r = "", + i = self.t + var p = self.DB - (i * self.DB) % k + if (i-- > 0) { + if (p < self.DB && (d = self[i] >> p) > 0) { + m = true + r = int2char(d) + } + while (i >= 0) { + if (p < k) { + d = (self[i] & ((1 << p) - 1)) << (k - p) + d |= self[--i] >> (p += self.DB - k) + } else { + d = (self[i] >> (p -= k)) & km + if (p <= 0) { + p += self.DB + --i + } + } + if (d > 0) m = true + if (m) r += int2char(d) + } + } + return m ? r : "0" +} + +// (public) -this +function bnNegate() { + var r = new BigInteger() + BigInteger.ZERO.subTo(this, r) + return r +} + +// (public) |this| +function bnAbs() { + return (this.s < 0) ? this.negate() : this +} + +// (public) return + if this > a, - if this < a, 0 if equal +function bnCompareTo(a) { + var r = this.s - a.s + if (r != 0) return r + var i = this.t + r = i - a.t + if (r != 0) return (this.s < 0) ? -r : r + while (--i >= 0) + if ((r = this[i] - a[i]) != 0) return r + return 0 +} + +// returns bit length of the integer x +function nbits(x) { + var r = 1, + t + if ((t = x >>> 16) != 0) { + x = t + r += 16 + } + if ((t = x >> 8) != 0) { + x = t + r += 8 + } + if ((t = x >> 4) != 0) { + x = t + r += 4 + } + if ((t = x >> 2) != 0) { + x = t + r += 2 + } + if ((t = x >> 1) != 0) { + x = t + r += 1 + } + return r +} + +// (public) return the number of bits in "this" +function bnBitLength() { + if (this.t <= 0) return 0 + return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM)) +} + +// (public) return the number of bytes in "this" +function bnByteLength() { + return this.bitLength() >> 3 +} + +// (protected) r = this << n*DB +function bnpDLShiftTo(n, r) { + var i + for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i] + for (i = n - 1; i >= 0; --i) r[i] = 0 + r.t = this.t + n + r.s = this.s +} + +// (protected) r = this >> n*DB +function bnpDRShiftTo(n, r) { + for (var i = n; i < this.t; ++i) r[i - n] = this[i] + r.t = Math.max(this.t - n, 0) + r.s = this.s +} + +// (protected) r = this << n +function bnpLShiftTo(n, r) { + var self = this + var bs = n % self.DB + var cbs = self.DB - bs + var bm = (1 << cbs) - 1 + var ds = Math.floor(n / self.DB), + c = (self.s << bs) & self.DM, + i + for (i = self.t - 1; i >= 0; --i) { + r[i + ds + 1] = (self[i] >> cbs) | c + c = (self[i] & bm) << bs + } + for (i = ds - 1; i >= 0; --i) r[i] = 0 + r[ds] = c + r.t = self.t + ds + 1 + r.s = self.s + r.clamp() +} + +// (protected) r = this >> n +function bnpRShiftTo(n, r) { + var self = this + r.s = self.s + var ds = Math.floor(n / self.DB) + if (ds >= self.t) { + r.t = 0 + return + } + var bs = n % self.DB + var cbs = self.DB - bs + var bm = (1 << bs) - 1 + r[0] = self[ds] >> bs + for (var i = ds + 1; i < self.t; ++i) { + r[i - ds - 1] |= (self[i] & bm) << cbs + r[i - ds] = self[i] >> bs + } + if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs + r.t = self.t - ds + r.clamp() +} + +// (protected) r = this - a +function bnpSubTo(a, r) { + var self = this + var i = 0, + c = 0, + m = Math.min(a.t, self.t) + while (i < m) { + c += self[i] - a[i] + r[i++] = c & self.DM + c >>= self.DB + } + if (a.t < self.t) { + c -= a.s + while (i < self.t) { + c += self[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += self.s + } else { + c += self.s + while (i < a.t) { + c -= a[i] + r[i++] = c & self.DM + c >>= self.DB + } + c -= a.s + } + r.s = (c < 0) ? -1 : 0 + if (c < -1) r[i++] = self.DV + c + else if (c > 0) r[i++] = c + r.t = i + r.clamp() +} + +// (protected) r = this * a, r != this,a (HAC 14.12) +// "this" should be the larger one if appropriate. +function bnpMultiplyTo(a, r) { + var x = this.abs(), + y = a.abs() + var i = x.t + r.t = i + y.t + while (--i >= 0) r[i] = 0 + for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t) + r.s = 0 + r.clamp() + if (this.s != a.s) BigInteger.ZERO.subTo(r, r) +} + +// (protected) r = this^2, r != this (HAC 14.16) +function bnpSquareTo(r) { + var x = this.abs() + var i = r.t = 2 * x.t + while (--i >= 0) r[i] = 0 + for (i = 0; i < x.t - 1; ++i) { + var c = x.am(i, x[i], r, 2 * i, 0, 1) + if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) { + r[i + x.t] -= x.DV + r[i + x.t + 1] = 1 + } + } + if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1) + r.s = 0 + r.clamp() +} + +// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20) +// r != q, this != m. q or r may be null. +function bnpDivRemTo(m, q, r) { + var self = this + var pm = m.abs() + if (pm.t <= 0) return + var pt = self.abs() + if (pt.t < pm.t) { + if (q != null) q.fromInt(0) + if (r != null) self.copyTo(r) + return + } + if (r == null) r = new BigInteger() + var y = new BigInteger(), + ts = self.s, + ms = m.s + var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus + if (nsh > 0) { + pm.lShiftTo(nsh, y) + pt.lShiftTo(nsh, r) + } else { + pm.copyTo(y) + pt.copyTo(r) + } + var ys = y.t + var y0 = y[ys - 1] + if (y0 == 0) return + var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0) + var d1 = self.FV / yt, + d2 = (1 << self.F1) / yt, + e = 1 << self.F2 + var i = r.t, + j = i - ys, + t = (q == null) ? new BigInteger() : q + y.dlShiftTo(j, t) + if (r.compareTo(t) >= 0) { + r[r.t++] = 1 + r.subTo(t, r) + } + BigInteger.ONE.dlShiftTo(ys, t) + t.subTo(y, y); // "negative" y so we can replace sub with am later + while (y.t < ys) y[y.t++] = 0 + while (--j >= 0) { + // Estimate quotient digit + var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2) + if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out + y.dlShiftTo(j, t) + r.subTo(t, r) + while (r[i] < --qd) r.subTo(t, r) + } + } + if (q != null) { + r.drShiftTo(ys, q) + if (ts != ms) BigInteger.ZERO.subTo(q, q) + } + r.t = ys + r.clamp() + if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder + if (ts < 0) BigInteger.ZERO.subTo(r, r) +} + +// (public) this mod a +function bnMod(a) { + var r = new BigInteger() + this.abs() + .divRemTo(a, null, r) + if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r) + return r +} + +// Modular reduction using "classic" algorithm +function Classic(m) { + this.m = m +} + +function cConvert(x) { + if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m) + else return x +} + +function cRevert(x) { + return x +} + +function cReduce(x) { + x.divRemTo(this.m, null, x) +} + +function cMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +function cSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +Classic.prototype.convert = cConvert +Classic.prototype.revert = cRevert +Classic.prototype.reduce = cReduce +Classic.prototype.mulTo = cMulTo +Classic.prototype.sqrTo = cSqrTo + +// (protected) return "-1/this % 2^DB"; useful for Mont. reduction +// justification: +// xy == 1 (mod m) +// xy = 1+km +// xy(2-xy) = (1+km)(1-km) +// x[y(2-xy)] = 1-k^2m^2 +// x[y(2-xy)] == 1 (mod m^2) +// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2 +// should reduce x and y(2-xy) by m^2 at each step to keep size bounded. +// JS multiply "overflows" differently from C/C++, so care is needed here. +function bnpInvDigit() { + if (this.t < 1) return 0 + var x = this[0] + if ((x & 1) == 0) return 0 + var y = x & 3; // y == 1/x mod 2^2 + y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4 + y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8 + y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16 + // last step - calculate inverse mod DV directly + // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints + y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits + // we really want the negative inverse, and -DV < y < DV + return (y > 0) ? this.DV - y : -y +} + +// Montgomery reduction +function Montgomery(m) { + this.m = m + this.mp = m.invDigit() + this.mpl = this.mp & 0x7fff + this.mph = this.mp >> 15 + this.um = (1 << (m.DB - 15)) - 1 + this.mt2 = 2 * m.t +} + +// xR mod m +function montConvert(x) { + var r = new BigInteger() + x.abs() + .dlShiftTo(this.m.t, r) + r.divRemTo(this.m, null, r) + if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r) + return r +} + +// x/R mod m +function montRevert(x) { + var r = new BigInteger() + x.copyTo(r) + this.reduce(r) + return r +} + +// x = x/R mod m (HAC 14.32) +function montReduce(x) { + while (x.t <= this.mt2) // pad x so am has enough room later + x[x.t++] = 0 + for (var i = 0; i < this.m.t; ++i) { + // faster way of calculating u0 = x[i]*mp mod DV + var j = x[i] & 0x7fff + var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM + // use am to combine the multiply-shift-add into one call + j = i + this.m.t + x[j] += this.m.am(0, u0, x, i, 0, this.m.t) + // propagate carry + while (x[j] >= x.DV) { + x[j] -= x.DV + x[++j]++ + } + } + x.clamp() + x.drShiftTo(this.m.t, x) + if (x.compareTo(this.m) >= 0) x.subTo(this.m, x) +} + +// r = "x^2/R mod m"; x != r +function montSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +// r = "xy/R mod m"; x,y != r +function montMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +Montgomery.prototype.convert = montConvert +Montgomery.prototype.revert = montRevert +Montgomery.prototype.reduce = montReduce +Montgomery.prototype.mulTo = montMulTo +Montgomery.prototype.sqrTo = montSqrTo + +// (protected) true iff this is even +function bnpIsEven() { + return ((this.t > 0) ? (this[0] & 1) : this.s) == 0 +} + +// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79) +function bnpExp(e, z) { + if (e > 0xffffffff || e < 1) return BigInteger.ONE + var r = new BigInteger(), + r2 = new BigInteger(), + g = z.convert(this), + i = nbits(e) - 1 + g.copyTo(r) + while (--i >= 0) { + z.sqrTo(r, r2) + if ((e & (1 << i)) > 0) z.mulTo(r2, g, r) + else { + var t = r + r = r2 + r2 = t + } + } + return z.revert(r) +} + +// (public) this^e % m, 0 <= e < 2^32 +function bnModPowInt(e, m) { + var z + if (e < 256 || m.isEven()) z = new Classic(m) + else z = new Montgomery(m) + return this.exp(e, z) +} + +// protected +proto.copyTo = bnpCopyTo +proto.fromInt = bnpFromInt +proto.fromString = bnpFromString +proto.clamp = bnpClamp +proto.dlShiftTo = bnpDLShiftTo +proto.drShiftTo = bnpDRShiftTo +proto.lShiftTo = bnpLShiftTo +proto.rShiftTo = bnpRShiftTo +proto.subTo = bnpSubTo +proto.multiplyTo = bnpMultiplyTo +proto.squareTo = bnpSquareTo +proto.divRemTo = bnpDivRemTo +proto.invDigit = bnpInvDigit +proto.isEven = bnpIsEven +proto.exp = bnpExp + +// public +proto.toString = bnToString +proto.negate = bnNegate +proto.abs = bnAbs +proto.compareTo = bnCompareTo +proto.bitLength = bnBitLength +proto.byteLength = bnByteLength +proto.mod = bnMod +proto.modPowInt = bnModPowInt + +// (public) +function bnClone() { + var r = new BigInteger() + this.copyTo(r) + return r +} + +// (public) return value as integer +function bnIntValue() { + if (this.s < 0) { + if (this.t == 1) return this[0] - this.DV + else if (this.t == 0) return -1 + } else if (this.t == 1) return this[0] + else if (this.t == 0) return 0 + // assumes 16 < DB < 32 + return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0] +} + +// (public) return value as byte +function bnByteValue() { + return (this.t == 0) ? this.s : (this[0] << 24) >> 24 +} + +// (public) return value as short (assumes DB>=16) +function bnShortValue() { + return (this.t == 0) ? this.s : (this[0] << 16) >> 16 +} + +// (protected) return x s.t. r^x < DV +function bnpChunkSize(r) { + return Math.floor(Math.LN2 * this.DB / Math.log(r)) +} + +// (public) 0 if this == 0, 1 if this > 0 +function bnSigNum() { + if (this.s < 0) return -1 + else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0 + else return 1 +} + +// (protected) convert to radix string +function bnpToRadix(b) { + if (b == null) b = 10 + if (this.signum() == 0 || b < 2 || b > 36) return "0" + var cs = this.chunkSize(b) + var a = Math.pow(b, cs) + var d = nbv(a), + y = new BigInteger(), + z = new BigInteger(), + r = "" + this.divRemTo(d, y, z) + while (y.signum() > 0) { + r = (a + z.intValue()) + .toString(b) + .substr(1) + r + y.divRemTo(d, y, z) + } + return z.intValue() + .toString(b) + r +} + +// (protected) convert from radix string +function bnpFromRadix(s, b) { + var self = this + self.fromInt(0) + if (b == null) b = 10 + var cs = self.chunkSize(b) + var d = Math.pow(b, cs), + mi = false, + j = 0, + w = 0 + for (var i = 0; i < s.length; ++i) { + var x = intAt(s, i) + if (x < 0) { + if (s.charAt(i) == "-" && self.signum() == 0) mi = true + continue + } + w = b * w + x + if (++j >= cs) { + self.dMultiply(d) + self.dAddOffset(w, 0) + j = 0 + w = 0 + } + } + if (j > 0) { + self.dMultiply(Math.pow(b, j)) + self.dAddOffset(w, 0) + } + if (mi) BigInteger.ZERO.subTo(self, self) +} + +// (protected) alternate constructor +function bnpFromNumber(a, b, c) { + var self = this + if ("number" == typeof b) { + // new BigInteger(int,int,RNG) + if (a < 2) self.fromInt(1) + else { + self.fromNumber(a, c) + if (!self.testBit(a - 1)) // force MSB set + self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self) + if (self.isEven()) self.dAddOffset(1, 0); // force odd + while (!self.isProbablePrime(b)) { + self.dAddOffset(2, 0) + if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self) + } + } + } else { + // new BigInteger(int,RNG) + var x = new Array(), + t = a & 7 + x.length = (a >> 3) + 1 + b.nextBytes(x) + if (t > 0) x[0] &= ((1 << t) - 1) + else x[0] = 0 + self.fromString(x, 256) + } +} + +// (public) convert to bigendian byte array +function bnToByteArray() { + var self = this + var i = self.t, + r = new Array() + r[0] = self.s + var p = self.DB - (i * self.DB) % 8, + d, k = 0 + if (i-- > 0) { + if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p) + r[k++] = d | (self.s << (self.DB - p)) + while (i >= 0) { + if (p < 8) { + d = (self[i] & ((1 << p) - 1)) << (8 - p) + d |= self[--i] >> (p += self.DB - 8) + } else { + d = (self[i] >> (p -= 8)) & 0xff + if (p <= 0) { + p += self.DB + --i + } + } + if ((d & 0x80) != 0) d |= -256 + if (k === 0 && (self.s & 0x80) != (d & 0x80))++k + if (k > 0 || d != self.s) r[k++] = d + } + } + return r +} + +function bnEquals(a) { + return (this.compareTo(a) == 0) +} + +function bnMin(a) { + return (this.compareTo(a) < 0) ? this : a +} + +function bnMax(a) { + return (this.compareTo(a) > 0) ? this : a +} + +// (protected) r = this op a (bitwise) +function bnpBitwiseTo(a, op, r) { + var self = this + var i, f, m = Math.min(a.t, self.t) + for (i = 0; i < m; ++i) r[i] = op(self[i], a[i]) + if (a.t < self.t) { + f = a.s & self.DM + for (i = m; i < self.t; ++i) r[i] = op(self[i], f) + r.t = self.t + } else { + f = self.s & self.DM + for (i = m; i < a.t; ++i) r[i] = op(f, a[i]) + r.t = a.t + } + r.s = op(self.s, a.s) + r.clamp() +} + +// (public) this & a +function op_and(x, y) { + return x & y +} + +function bnAnd(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_and, r) + return r +} + +// (public) this | a +function op_or(x, y) { + return x | y +} + +function bnOr(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_or, r) + return r +} + +// (public) this ^ a +function op_xor(x, y) { + return x ^ y +} + +function bnXor(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_xor, r) + return r +} + +// (public) this & ~a +function op_andnot(x, y) { + return x & ~y +} + +function bnAndNot(a) { + var r = new BigInteger() + this.bitwiseTo(a, op_andnot, r) + return r +} + +// (public) ~this +function bnNot() { + var r = new BigInteger() + for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i] + r.t = this.t + r.s = ~this.s + return r +} + +// (public) this << n +function bnShiftLeft(n) { + var r = new BigInteger() + if (n < 0) this.rShiftTo(-n, r) + else this.lShiftTo(n, r) + return r +} + +// (public) this >> n +function bnShiftRight(n) { + var r = new BigInteger() + if (n < 0) this.lShiftTo(-n, r) + else this.rShiftTo(n, r) + return r +} + +// return index of lowest 1-bit in x, x < 2^31 +function lbit(x) { + if (x == 0) return -1 + var r = 0 + if ((x & 0xffff) == 0) { + x >>= 16 + r += 16 + } + if ((x & 0xff) == 0) { + x >>= 8 + r += 8 + } + if ((x & 0xf) == 0) { + x >>= 4 + r += 4 + } + if ((x & 3) == 0) { + x >>= 2 + r += 2 + } + if ((x & 1) == 0)++r + return r +} + +// (public) returns index of lowest 1-bit (or -1 if none) +function bnGetLowestSetBit() { + for (var i = 0; i < this.t; ++i) + if (this[i] != 0) return i * this.DB + lbit(this[i]) + if (this.s < 0) return this.t * this.DB + return -1 +} + +// return number of 1 bits in x +function cbit(x) { + var r = 0 + while (x != 0) { + x &= x - 1 + ++r + } + return r +} + +// (public) return number of set bits +function bnBitCount() { + var r = 0, + x = this.s & this.DM + for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x) + return r +} + +// (public) true iff nth bit is set +function bnTestBit(n) { + var j = Math.floor(n / this.DB) + if (j >= this.t) return (this.s != 0) + return ((this[j] & (1 << (n % this.DB))) != 0) +} + +// (protected) this op (1<>= self.DB + } + if (a.t < self.t) { + c += a.s + while (i < self.t) { + c += self[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += self.s + } else { + c += self.s + while (i < a.t) { + c += a[i] + r[i++] = c & self.DM + c >>= self.DB + } + c += a.s + } + r.s = (c < 0) ? -1 : 0 + if (c > 0) r[i++] = c + else if (c < -1) r[i++] = self.DV + c + r.t = i + r.clamp() +} + +// (public) this + a +function bnAdd(a) { + var r = new BigInteger() + this.addTo(a, r) + return r +} + +// (public) this - a +function bnSubtract(a) { + var r = new BigInteger() + this.subTo(a, r) + return r +} + +// (public) this * a +function bnMultiply(a) { + var r = new BigInteger() + this.multiplyTo(a, r) + return r +} + +// (public) this^2 +function bnSquare() { + var r = new BigInteger() + this.squareTo(r) + return r +} + +// (public) this / a +function bnDivide(a) { + var r = new BigInteger() + this.divRemTo(a, r, null) + return r +} + +// (public) this % a +function bnRemainder(a) { + var r = new BigInteger() + this.divRemTo(a, null, r) + return r +} + +// (public) [this/a,this%a] +function bnDivideAndRemainder(a) { + var q = new BigInteger(), + r = new BigInteger() + this.divRemTo(a, q, r) + return new Array(q, r) +} + +// (protected) this *= n, this >= 0, 1 < n < DV +function bnpDMultiply(n) { + this[this.t] = this.am(0, n - 1, this, 0, 0, this.t) + ++this.t + this.clamp() +} + +// (protected) this += n << w words, this >= 0 +function bnpDAddOffset(n, w) { + if (n == 0) return + while (this.t <= w) this[this.t++] = 0 + this[w] += n + while (this[w] >= this.DV) { + this[w] -= this.DV + if (++w >= this.t) this[this.t++] = 0 + ++this[w] + } +} + +// A "null" reducer +function NullExp() {} + +function nNop(x) { + return x +} + +function nMulTo(x, y, r) { + x.multiplyTo(y, r) +} + +function nSqrTo(x, r) { + x.squareTo(r) +} + +NullExp.prototype.convert = nNop +NullExp.prototype.revert = nNop +NullExp.prototype.mulTo = nMulTo +NullExp.prototype.sqrTo = nSqrTo + +// (public) this^e +function bnPow(e) { + return this.exp(e, new NullExp()) +} + +// (protected) r = lower n words of "this * a", a.t <= n +// "this" should be the larger one if appropriate. +function bnpMultiplyLowerTo(a, n, r) { + var i = Math.min(this.t + a.t, n) + r.s = 0; // assumes a,this >= 0 + r.t = i + while (i > 0) r[--i] = 0 + var j + for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t) + for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i) + r.clamp() +} + +// (protected) r = "this * a" without lower n words, n > 0 +// "this" should be the larger one if appropriate. +function bnpMultiplyUpperTo(a, n, r) { + --n + var i = r.t = this.t + a.t - n + r.s = 0; // assumes a,this >= 0 + while (--i >= 0) r[i] = 0 + for (i = Math.max(n - this.t, 0); i < a.t; ++i) + r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n) + r.clamp() + r.drShiftTo(1, r) +} + +// Barrett modular reduction +function Barrett(m) { + // setup Barrett + this.r2 = new BigInteger() + this.q3 = new BigInteger() + BigInteger.ONE.dlShiftTo(2 * m.t, this.r2) + this.mu = this.r2.divide(m) + this.m = m +} + +function barrettConvert(x) { + if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m) + else if (x.compareTo(this.m) < 0) return x + else { + var r = new BigInteger() + x.copyTo(r) + this.reduce(r) + return r + } +} + +function barrettRevert(x) { + return x +} + +// x = x mod m (HAC 14.42) +function barrettReduce(x) { + var self = this + x.drShiftTo(self.m.t - 1, self.r2) + if (x.t > self.m.t + 1) { + x.t = self.m.t + 1 + x.clamp() + } + self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3) + self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2) + while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1) + x.subTo(self.r2, x) + while (x.compareTo(self.m) >= 0) x.subTo(self.m, x) +} + +// r = x^2 mod m; x != r +function barrettSqrTo(x, r) { + x.squareTo(r) + this.reduce(r) +} + +// r = x*y mod m; x,y != r +function barrettMulTo(x, y, r) { + x.multiplyTo(y, r) + this.reduce(r) +} + +Barrett.prototype.convert = barrettConvert +Barrett.prototype.revert = barrettRevert +Barrett.prototype.reduce = barrettReduce +Barrett.prototype.mulTo = barrettMulTo +Barrett.prototype.sqrTo = barrettSqrTo + +// (public) this^e % m (HAC 14.85) +function bnModPow(e, m) { + var i = e.bitLength(), + k, r = nbv(1), + z + if (i <= 0) return r + else if (i < 18) k = 1 + else if (i < 48) k = 3 + else if (i < 144) k = 4 + else if (i < 768) k = 5 + else k = 6 + if (i < 8) + z = new Classic(m) + else if (m.isEven()) + z = new Barrett(m) + else + z = new Montgomery(m) + + // precomputation + var g = new Array(), + n = 3, + k1 = k - 1, + km = (1 << k) - 1 + g[1] = z.convert(this) + if (k > 1) { + var g2 = new BigInteger() + z.sqrTo(g[1], g2) + while (n <= km) { + g[n] = new BigInteger() + z.mulTo(g2, g[n - 2], g[n]) + n += 2 + } + } + + var j = e.t - 1, + w, is1 = true, + r2 = new BigInteger(), + t + i = nbits(e[j]) - 1 + while (j >= 0) { + if (i >= k1) w = (e[j] >> (i - k1)) & km + else { + w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i) + if (j > 0) w |= e[j - 1] >> (this.DB + i - k1) + } + + n = k + while ((w & 1) == 0) { + w >>= 1 + --n + } + if ((i -= n) < 0) { + i += this.DB + --j + } + if (is1) { // ret == 1, don't bother squaring or multiplying it + g[w].copyTo(r) + is1 = false + } else { + while (n > 1) { + z.sqrTo(r, r2) + z.sqrTo(r2, r) + n -= 2 + } + if (n > 0) z.sqrTo(r, r2) + else { + t = r + r = r2 + r2 = t + } + z.mulTo(r2, g[w], r) + } + + while (j >= 0 && (e[j] & (1 << i)) == 0) { + z.sqrTo(r, r2) + t = r + r = r2 + r2 = t + if (--i < 0) { + i = this.DB - 1 + --j + } + } + } + return z.revert(r) +} + +// (public) gcd(this,a) (HAC 14.54) +function bnGCD(a) { + var x = (this.s < 0) ? this.negate() : this.clone() + var y = (a.s < 0) ? a.negate() : a.clone() + if (x.compareTo(y) < 0) { + var t = x + x = y + y = t + } + var i = x.getLowestSetBit(), + g = y.getLowestSetBit() + if (g < 0) return x + if (i < g) g = i + if (g > 0) { + x.rShiftTo(g, x) + y.rShiftTo(g, y) + } + while (x.signum() > 0) { + if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x) + if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y) + if (x.compareTo(y) >= 0) { + x.subTo(y, x) + x.rShiftTo(1, x) + } else { + y.subTo(x, y) + y.rShiftTo(1, y) + } + } + if (g > 0) y.lShiftTo(g, y) + return y +} + +// (protected) this % n, n < 2^26 +function bnpModInt(n) { + if (n <= 0) return 0 + var d = this.DV % n, + r = (this.s < 0) ? n - 1 : 0 + if (this.t > 0) + if (d == 0) r = this[0] % n + else + for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n + return r +} + +// (public) 1/this % m (HAC 14.61) +function bnModInverse(m) { + var ac = m.isEven() + if (this.signum() === 0) throw new Error('division by zero') + if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO + var u = m.clone(), + v = this.clone() + var a = nbv(1), + b = nbv(0), + c = nbv(0), + d = nbv(1) + while (u.signum() != 0) { + while (u.isEven()) { + u.rShiftTo(1, u) + if (ac) { + if (!a.isEven() || !b.isEven()) { + a.addTo(this, a) + b.subTo(m, b) + } + a.rShiftTo(1, a) + } else if (!b.isEven()) b.subTo(m, b) + b.rShiftTo(1, b) + } + while (v.isEven()) { + v.rShiftTo(1, v) + if (ac) { + if (!c.isEven() || !d.isEven()) { + c.addTo(this, c) + d.subTo(m, d) + } + c.rShiftTo(1, c) + } else if (!d.isEven()) d.subTo(m, d) + d.rShiftTo(1, d) + } + if (u.compareTo(v) >= 0) { + u.subTo(v, u) + if (ac) a.subTo(c, a) + b.subTo(d, b) + } else { + v.subTo(u, v) + if (ac) c.subTo(a, c) + d.subTo(b, d) + } + } + if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO + while (d.compareTo(m) >= 0) d.subTo(m, d) + while (d.signum() < 0) d.addTo(m, d) + return d +} + +var lowprimes = [ + 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, + 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, + 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, + 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, + 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, + 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, + 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, + 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, + 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, + 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, + 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997 +] + +var lplim = (1 << 26) / lowprimes[lowprimes.length - 1] + +// (public) test primality with certainty >= 1-.5^t +function bnIsProbablePrime(t) { + var i, x = this.abs() + if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) { + for (i = 0; i < lowprimes.length; ++i) + if (x[0] == lowprimes[i]) return true + return false + } + if (x.isEven()) return false + i = 1 + while (i < lowprimes.length) { + var m = lowprimes[i], + j = i + 1 + while (j < lowprimes.length && m < lplim) m *= lowprimes[j++] + m = x.modInt(m) + while (i < j) if (m % lowprimes[i++] == 0) return false + } + return x.millerRabin(t) +} + +// (protected) true if probably prime (HAC 4.24, Miller-Rabin) +function bnpMillerRabin(t) { + var n1 = this.subtract(BigInteger.ONE) + var k = n1.getLowestSetBit() + if (k <= 0) return false + var r = n1.shiftRight(k) + t = (t + 1) >> 1 + if (t > lowprimes.length) t = lowprimes.length + var a = new BigInteger(null) + var j, bases = [] + for (var i = 0; i < t; ++i) { + for (;;) { + j = lowprimes[Math.floor(Math.random() * lowprimes.length)] + if (bases.indexOf(j) == -1) break + } + bases.push(j) + a.fromInt(j) + var y = a.modPow(r, this) + if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) { + var j = 1 + while (j++ < k && y.compareTo(n1) != 0) { + y = y.modPowInt(2, this) + if (y.compareTo(BigInteger.ONE) == 0) return false + } + if (y.compareTo(n1) != 0) return false + } + } + return true +} + +// protected +proto.chunkSize = bnpChunkSize +proto.toRadix = bnpToRadix +proto.fromRadix = bnpFromRadix +proto.fromNumber = bnpFromNumber +proto.bitwiseTo = bnpBitwiseTo +proto.changeBit = bnpChangeBit +proto.addTo = bnpAddTo +proto.dMultiply = bnpDMultiply +proto.dAddOffset = bnpDAddOffset +proto.multiplyLowerTo = bnpMultiplyLowerTo +proto.multiplyUpperTo = bnpMultiplyUpperTo +proto.modInt = bnpModInt +proto.millerRabin = bnpMillerRabin + +// public +proto.clone = bnClone +proto.intValue = bnIntValue +proto.byteValue = bnByteValue +proto.shortValue = bnShortValue +proto.signum = bnSigNum +proto.toByteArray = bnToByteArray +proto.equals = bnEquals +proto.min = bnMin +proto.max = bnMax +proto.and = bnAnd +proto.or = bnOr +proto.xor = bnXor +proto.andNot = bnAndNot +proto.not = bnNot +proto.shiftLeft = bnShiftLeft +proto.shiftRight = bnShiftRight +proto.getLowestSetBit = bnGetLowestSetBit +proto.bitCount = bnBitCount +proto.testBit = bnTestBit +proto.setBit = bnSetBit +proto.clearBit = bnClearBit +proto.flipBit = bnFlipBit +proto.add = bnAdd +proto.subtract = bnSubtract +proto.multiply = bnMultiply +proto.divide = bnDivide +proto.remainder = bnRemainder +proto.divideAndRemainder = bnDivideAndRemainder +proto.modPow = bnModPow +proto.modInverse = bnModInverse +proto.pow = bnPow +proto.gcd = bnGCD +proto.isProbablePrime = bnIsProbablePrime + +// JSBN-specific extension +proto.square = bnSquare + +// constants +BigInteger.ZERO = nbv(0) +BigInteger.ONE = nbv(1) +BigInteger.valueOf = nbv + +module.exports = BigInteger + +},{"../package.json":40}],38:[function(require,module,exports){ +(function (Buffer){ +// FIXME: Kind of a weird way to throw exceptions, consider removing +var assert = require('assert') +var BigInteger = require('./bigi') + +/** + * Turns a byte array into a big integer. + * + * This function will interpret a byte array as a big integer in big + * endian notation. + */ +BigInteger.fromByteArrayUnsigned = function(byteArray) { + // BigInteger expects a DER integer conformant byte array + if (byteArray[0] & 0x80) { + return new BigInteger([0].concat(byteArray)) + } + + return new BigInteger(byteArray) +} + +/** + * Returns a byte array representation of the big integer. + * + * This returns the absolute of the contained value in big endian + * form. A value of zero results in an empty array. + */ +BigInteger.prototype.toByteArrayUnsigned = function() { + var byteArray = this.toByteArray() + return byteArray[0] === 0 ? byteArray.slice(1) : byteArray +} + +BigInteger.fromDERInteger = function(byteArray) { + return new BigInteger(byteArray) +} + +/* + * Converts BigInteger to a DER integer representation. + * + * The format for this value uses the most significant bit as a sign + * bit. If the most significant bit is already set and the integer is + * positive, a 0x00 is prepended. + * + * Examples: + * + * 0 => 0x00 + * 1 => 0x01 + * -1 => 0xff + * 127 => 0x7f + * -127 => 0x81 + * 128 => 0x0080 + * -128 => 0x80 + * 255 => 0x00ff + * -255 => 0xff01 + * 16300 => 0x3fac + * -16300 => 0xc054 + * 62300 => 0x00f35c + * -62300 => 0xff0ca4 +*/ +BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray + +BigInteger.fromBuffer = function(buffer) { + // BigInteger expects a DER integer conformant byte array + if (buffer[0] & 0x80) { + var byteArray = Array.prototype.slice.call(buffer) + + return new BigInteger([0].concat(byteArray)) + } + + return new BigInteger(buffer) +} + +BigInteger.fromHex = function(hex) { + if (hex === '') return BigInteger.ZERO + + assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string') + assert.equal(hex.length % 2, 0, 'Incomplete hex') + return new BigInteger(hex, 16) +} + +BigInteger.prototype.toBuffer = function(size) { + var byteArray = this.toByteArrayUnsigned() + var zeros = [] + + var padding = size - byteArray.length + while (zeros.length < padding) zeros.push(0) + + return new Buffer(zeros.concat(byteArray)) +} + +BigInteger.prototype.toHex = function(size) { + return this.toBuffer(size).toString('hex') +} + +}).call(this,require("buffer").Buffer) +},{"./bigi":37,"assert":1,"buffer":5}],39:[function(require,module,exports){ +var BigInteger = require('./bigi') + +//addons +require('./convert') + +module.exports = BigInteger +},{"./bigi":37,"./convert":38}],40:[function(require,module,exports){ +module.exports={ + "_args": [ + [ + "bigi@^1.4.0", + "/home/ian/git/bitcoin/bitcoinjs-lib-browser/node_modules/bitcoinjs-lib" + ] + ], + "_from": "bigi@>=1.4.0 <2.0.0", + "_id": "bigi@1.4.2", + "_inCache": true, + "_installable": true, + "_location": "/bigi", + "_nodeVersion": "6.1.0", + "_npmOperationalInternal": { + "host": "packages-12-west.internal.npmjs.com", + "tmp": "tmp/bigi-1.4.2.tgz_1469584192413_0.6801238611806184" + }, + "_npmUser": { + "email": "jprichardson@gmail.com", + "name": "jprichardson" + }, + "_npmVersion": "3.8.6", + "_phantomChildren": {}, + "_requested": { + "name": "bigi", + "raw": "bigi@^1.4.0", + "rawSpec": "^1.4.0", + "scope": null, + "spec": ">=1.4.0 <2.0.0", + "type": "range" + }, + "_requiredBy": [ + "/bitcoinjs-lib", + "/ecurve" + ], + "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz", + "_shasum": "9c665a95f88b8b08fc05cfd731f561859d725825", + "_shrinkwrap": null, + "_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" + }, + "dependencies": {}, + "description": "Big integers.", + "devDependencies": { + "coveralls": "^2.11.2", + "istanbul": "^0.3.5", + "jshint": "^2.5.1", + "mocha": "^2.1.0", + "mochify": "^2.1.0" + }, + "directories": {}, + "dist": { + "shasum": "9c665a95f88b8b08fc05cfd731f561859d725825", + "tarball": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz" + }, + "gitHead": "c25308081c896ff84702303722bf5ecd8b3f78e3", + "homepage": "https://github.com/cryptocoinjs/bigi#readme", + "keywords": [ + "cryptography", + "math", + "bitcoin", + "arbitrary", + "precision", + "arithmetic", + "big", + "integer", + "int", + "number", + "biginteger", + "bigint", + "bignumber", + "decimal", + "float" + ], + "main": "./lib/index.js", + "maintainers": [ + { + "email": "boydb@midnightdesign.ws", + "name": "midnightlightning" + }, + { + "email": "sidazhang89@gmail.com", + "name": "sidazhang" + }, + { + "email": "npm@shesek.info", + "name": "nadav" + }, + { + "email": "jprichardson@gmail.com", + "name": "jprichardson" + } + ], + "name": "bigi", + "optionalDependencies": {}, + "readme": "ERROR: No README data found!", + "repository": { + "type": "git", + "url": "git+https://github.com/cryptocoinjs/bigi.git" + }, + "scripts": { + "browser-test": "mochify --wd -R spec", + "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js", + "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info", + "jshint": "jshint --config jshint.json lib/*.js ; true", + "test": "_mocha -- test/*.js", + "unit": "mocha" + }, + "testling": { + "browsers": [ + "ie/9..latest", + "firefox/latest", + "chrome/latest", + "safari/6.0..latest", + "iphone/6.0..latest", + "android-browser/4.2..latest" + ], + "files": "test/*.js", + "harness": "mocha" + }, + "version": "1.4.2" +} + +},{}],41:[function(require,module,exports){ +// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki +// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] +// NOTE: SIGHASH byte ignored AND restricted, truncate before use + +var Buffer = require('safe-buffer').Buffer + +function check (buffer) { + if (buffer.length < 8) return false + if (buffer.length > 72) return false + if (buffer[0] !== 0x30) return false + if (buffer[1] !== buffer.length - 2) return false + if (buffer[2] !== 0x02) return false + + var lenR = buffer[3] + if (lenR === 0) return false + if (5 + lenR >= buffer.length) return false + if (buffer[4 + lenR] !== 0x02) return false + + var lenS = buffer[5 + lenR] + if (lenS === 0) return false + if ((6 + lenR + lenS) !== buffer.length) return false + + if (buffer[4] & 0x80) return false + if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false + + if (buffer[lenR + 6] & 0x80) return false + if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false + return true +} + +function decode (buffer) { + if (buffer.length < 8) throw new Error('DER sequence length is too short') + if (buffer.length > 72) throw new Error('DER sequence length is too long') + if (buffer[0] !== 0x30) throw new Error('Expected DER sequence') + if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid') + if (buffer[2] !== 0x02) throw new Error('Expected DER integer') + + var lenR = buffer[3] + if (lenR === 0) throw new Error('R length is zero') + if (5 + lenR >= buffer.length) throw new Error('R length is too long') + if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)') + + var lenS = buffer[5 + lenR] + if (lenS === 0) throw new Error('S length is zero') + if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid') + + if (buffer[4] & 0x80) throw new Error('R value is negative') + if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded') + + if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative') + if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded') + + // non-BIP66 - extract R, S values + return { + r: buffer.slice(4, 4 + lenR), + s: buffer.slice(6 + lenR) + } +} + +/* + * Expects r and s to be positive DER integers. + * + * The DER format uses the most significant bit as a sign bit (& 0x80). + * If the significant bit is set AND the integer is positive, a 0x00 is prepended. + * + * Examples: + * + * 0 => 0x00 + * 1 => 0x01 + * -1 => 0xff + * 127 => 0x7f + * -127 => 0x81 + * 128 => 0x0080 + * -128 => 0x80 + * 255 => 0x00ff + * -255 => 0xff01 + * 16300 => 0x3fac + * -16300 => 0xc054 + * 62300 => 0x00f35c + * -62300 => 0xff0ca4 +*/ +function encode (r, s) { + var lenR = r.length + var lenS = s.length + if (lenR === 0) throw new Error('R length is zero') + if (lenS === 0) throw new Error('S length is zero') + if (lenR > 33) throw new Error('R length is too long') + if (lenS > 33) throw new Error('S length is too long') + if (r[0] & 0x80) throw new Error('R value is negative') + if (s[0] & 0x80) throw new Error('S value is negative') + if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded') + if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded') + + var signature = Buffer.allocUnsafe(6 + lenR + lenS) + + // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S] + signature[0] = 0x30 + signature[1] = signature.length - 2 + signature[2] = 0x02 + signature[3] = r.length + r.copy(signature, 4) + signature[4 + lenR] = 0x02 + signature[5 + lenR] = s.length + s.copy(signature, 6 + lenR) + + return signature +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"safe-buffer":101}],42:[function(require,module,exports){ +module.exports={ + "OP_FALSE": 0, + "OP_0": 0, + "OP_PUSHDATA1": 76, + "OP_PUSHDATA2": 77, + "OP_PUSHDATA4": 78, + "OP_1NEGATE": 79, + "OP_RESERVED": 80, + "OP_TRUE": 81, + "OP_1": 81, + "OP_2": 82, + "OP_3": 83, + "OP_4": 84, + "OP_5": 85, + "OP_6": 86, + "OP_7": 87, + "OP_8": 88, + "OP_9": 89, + "OP_10": 90, + "OP_11": 91, + "OP_12": 92, + "OP_13": 93, + "OP_14": 94, + "OP_15": 95, + "OP_16": 96, + + "OP_NOP": 97, + "OP_VER": 98, + "OP_IF": 99, + "OP_NOTIF": 100, + "OP_VERIF": 101, + "OP_VERNOTIF": 102, + "OP_ELSE": 103, + "OP_ENDIF": 104, + "OP_VERIFY": 105, + "OP_RETURN": 106, + + "OP_TOALTSTACK": 107, + "OP_FROMALTSTACK": 108, + "OP_2DROP": 109, + "OP_2DUP": 110, + "OP_3DUP": 111, + "OP_2OVER": 112, + "OP_2ROT": 113, + "OP_2SWAP": 114, + "OP_IFDUP": 115, + "OP_DEPTH": 116, + "OP_DROP": 117, + "OP_DUP": 118, + "OP_NIP": 119, + "OP_OVER": 120, + "OP_PICK": 121, + "OP_ROLL": 122, + "OP_ROT": 123, + "OP_SWAP": 124, + "OP_TUCK": 125, + + "OP_CAT": 126, + "OP_SUBSTR": 127, + "OP_LEFT": 128, + "OP_RIGHT": 129, + "OP_SIZE": 130, + + "OP_INVERT": 131, + "OP_AND": 132, + "OP_OR": 133, + "OP_XOR": 134, + "OP_EQUAL": 135, + "OP_EQUALVERIFY": 136, + "OP_RESERVED1": 137, + "OP_RESERVED2": 138, + + "OP_1ADD": 139, + "OP_1SUB": 140, + "OP_2MUL": 141, + "OP_2DIV": 142, + "OP_NEGATE": 143, + "OP_ABS": 144, + "OP_NOT": 145, + "OP_0NOTEQUAL": 146, + "OP_ADD": 147, + "OP_SUB": 148, + "OP_MUL": 149, + "OP_DIV": 150, + "OP_MOD": 151, + "OP_LSHIFT": 152, + "OP_RSHIFT": 153, + + "OP_BOOLAND": 154, + "OP_BOOLOR": 155, + "OP_NUMEQUAL": 156, + "OP_NUMEQUALVERIFY": 157, + "OP_NUMNOTEQUAL": 158, + "OP_LESSTHAN": 159, + "OP_GREATERTHAN": 160, + "OP_LESSTHANOREQUAL": 161, + "OP_GREATERTHANOREQUAL": 162, + "OP_MIN": 163, + "OP_MAX": 164, + + "OP_WITHIN": 165, + + "OP_RIPEMD160": 166, + "OP_SHA1": 167, + "OP_SHA256": 168, + "OP_HASH160": 169, + "OP_HASH256": 170, + "OP_CODESEPARATOR": 171, + "OP_CHECKSIG": 172, + "OP_CHECKSIGVERIFY": 173, + "OP_CHECKMULTISIG": 174, + "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, + "OP_NOP7": 182, + "OP_NOP8": 183, + "OP_NOP9": 184, + "OP_NOP10": 185, + + "OP_PUBKEYHASH": 253, + "OP_PUBKEY": 254, + "OP_INVALIDOPCODE": 255 +} + +},{}],43:[function(require,module,exports){ +var OPS = require('./index.json') + +var map = {} +for (var op in OPS) { + var code = OPS[op] + map[code] = op +} + +module.exports = map + +},{"./index.json":42}],44:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bech32 = require('bech32') +var bs58check = require('bs58check') +var bscript = require('./script') +var btemplates = require('./templates') +var networks = require('./networks') +var typeforce = require('typeforce') +var types = require('./types') + +function fromBase58Check (address) { + var payload = bs58check.decode(address) + + // TODO: 4.0.0, move to "toOutputScript" + if (payload.length < 21) throw new TypeError(address + ' is too short') + if (payload.length > 21) throw new TypeError(address + ' is too long') + + var version = payload.readUInt8(0) + var hash = payload.slice(1) + + return { version: version, hash: hash } +} + +function fromBech32 (address) { + var result = bech32.decode(address) + var data = bech32.fromWords(result.words.slice(1)) + + return { + version: result.words[0], + prefix: result.prefix, + data: Buffer.from(data) + } +} + +function toBase58Check (hash, version) { + typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments) + + var payload = Buffer.allocUnsafe(21) + payload.writeUInt8(version, 0) + hash.copy(payload, 1) + + return bs58check.encode(payload) +} + +function toBech32 (data, version, prefix) { + var words = bech32.toWords(data) + words.unshift(version) + + return bech32.encode(prefix, words) +} + +function fromOutputScript (outputScript, network) { + network = network || networks.bitcoin + + if (btemplates.pubKeyHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(3, 23), network.pubKeyHash) + if (btemplates.scriptHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(2, 22), network.scriptHash) + if (btemplates.witnessPubKeyHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 22), 0, network.bech32) + if (btemplates.witnessScriptHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 34), 0, network.bech32) + + throw new Error(bscript.toASM(outputScript) + ' has no matching Address') +} + +function toOutputScript (address, network) { + network = network || networks.bitcoin + + var decode + try { + decode = fromBase58Check(address) + } catch (e) {} + + if (decode) { + if (decode.version === network.pubKeyHash) return btemplates.pubKeyHash.output.encode(decode.hash) + if (decode.version === network.scriptHash) return btemplates.scriptHash.output.encode(decode.hash) + } else { + try { + decode = fromBech32(address) + } catch (e) {} + + if (decode) { + if (decode.prefix !== network.bech32) throw new Error(address + ' has an invalid prefix') + if (decode.version === 0) { + if (decode.data.length === 20) return btemplates.witnessPubKeyHash.output.encode(decode.data) + if (decode.data.length === 32) return btemplates.witnessScriptHash.output.encode(decode.data) + } + } + } + + throw new Error(address + ' has no matching Script') +} + +module.exports = { + fromBase58Check: fromBase58Check, + fromBech32: fromBech32, + fromOutputScript: fromOutputScript, + toBase58Check: toBase58Check, + toBech32: toBech32, + toOutputScript: toOutputScript +} + +},{"./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') +var typeforce = require('typeforce') +var types = require('./types') +var varuint = require('varuint-bitcoin') + +var Transaction = require('./transaction') + +function Block () { + this.version = 1 + this.prevHash = null + this.merkleRoot = null + this.timestamp = 0 + this.bits = 0 + this.nonce = 0 +} + +Block.fromBuffer = function (buffer) { + if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)') + + var offset = 0 + function readSlice (n) { + offset += n + return buffer.slice(offset - n, offset) + } + + function readUInt32 () { + var i = buffer.readUInt32LE(offset) + offset += 4 + return i + } + + function readInt32 () { + var i = buffer.readInt32LE(offset) + offset += 4 + return i + } + + var block = new Block() + block.version = readInt32() + block.prevHash = readSlice(32) + block.merkleRoot = readSlice(32) + block.timestamp = readUInt32() + block.bits = readUInt32() + block.nonce = readUInt32() + + if (buffer.length === 80) return block + + function readVarInt () { + var vi = varuint.decode(buffer, offset) + offset += varuint.decode.bytes + return vi + } + + function readTransaction () { + var tx = Transaction.fromBuffer(buffer.slice(offset), true) + offset += tx.byteLength() + return tx + } + + var nTransactions = readVarInt() + block.transactions = [] + + for (var i = 0; i < nTransactions; ++i) { + var tx = readTransaction() + block.transactions.push(tx) + } + + return block +} + +Block.prototype.byteLength = function (headersOnly) { + if (headersOnly || !this.transactions) return 80 + + return 80 + varuint.encodingLength(this.transactions.length) + this.transactions.reduce(function (a, x) { + return a + x.byteLength() + }, 0) +} + +Block.fromHex = function (hex) { + return Block.fromBuffer(Buffer.from(hex, 'hex')) +} + +Block.prototype.getHash = function () { + return bcrypto.hash256(this.toBuffer(true)) +} + +Block.prototype.getId = function () { + return this.getHash().reverse().toString('hex') +} + +Block.prototype.getUTCDate = function () { + var date = new Date(0) // epoch + date.setUTCSeconds(this.timestamp) + + return date +} + +// TODO: buffer, offset compatibility +Block.prototype.toBuffer = function (headersOnly) { + var buffer = Buffer.allocUnsafe(this.byteLength(headersOnly)) + + var offset = 0 + function writeSlice (slice) { + slice.copy(buffer, offset) + offset += slice.length + } + + function writeInt32 (i) { + buffer.writeInt32LE(i, offset) + offset += 4 + } + function writeUInt32 (i) { + buffer.writeUInt32LE(i, offset) + offset += 4 + } + + writeInt32(this.version) + writeSlice(this.prevHash) + writeSlice(this.merkleRoot) + writeUInt32(this.timestamp) + writeUInt32(this.bits) + writeUInt32(this.nonce) + + if (headersOnly || !this.transactions) return buffer + + varuint.encode(this.transactions.length, buffer, offset) + offset += varuint.encode.bytes + + this.transactions.forEach(function (tx) { + var txSize = tx.byteLength() // TODO: extract from toBuffer? + tx.toBuffer(buffer, offset) + offset += txSize + }) + + return buffer +} + +Block.prototype.toHex = function (headersOnly) { + return this.toBuffer(headersOnly).toString('hex') +} + +Block.calculateTarget = function (bits) { + var exponent = ((bits & 0xff000000) >> 24) - 3 + var mantissa = bits & 0x007fffff + var target = Buffer.alloc(32, 0) + target.writeUInt32BE(mantissa, 28 - exponent) + return target +} + +Block.calculateMerkleRoot = function (transactions) { + typeforce([{ getHash: types.Function }], transactions) + if (transactions.length === 0) throw TypeError('Cannot compute merkle root for zero transactions') + + var hashes = transactions.map(function (transaction) { + return transaction.getHash() + }) + + return fastMerkleRoot(hashes, bcrypto.hash256) +} + +Block.prototype.checkMerkleRoot = function () { + if (!this.transactions) return false + + var actualMerkleRoot = Block.calculateMerkleRoot(this.transactions) + return this.merkleRoot.compare(actualMerkleRoot) === 0 +} + +Block.prototype.checkProofOfWork = function () { + var hash = this.getHash().reverse() + var target = Block.calculateTarget(this.bits) + + return hash.compare(target) <= 0 +} + +module.exports = Block + +},{"./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') + +// https://github.com/feross/buffer/blob/master/index.js#L1127 +function verifuint (value, max) { + if (typeof value !== 'number') throw new Error('cannot write a non-number as a number') + if (value < 0) throw new Error('specified a negative value for writing an unsigned value') + if (value > max) throw new Error('RangeError: value out of range') + if (Math.floor(value) !== value) throw new Error('value has a fractional component') +} + +function readUInt64LE (buffer, offset) { + var a = buffer.readUInt32LE(offset) + var b = buffer.readUInt32LE(offset + 4) + b *= 0x100000000 + + verifuint(b + a, 0x001fffffffffffff) + + return b + a +} + +function writeUInt64LE (buffer, value, offset) { + verifuint(value, 0x001fffffffffffff) + + buffer.writeInt32LE(value & -1, offset) + buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4) + return offset + 8 +} + +// TODO: remove in 4.0.0? +function readVarInt (buffer, offset) { + var result = varuint.decode(buffer, offset) + + return { + number: result, + size: varuint.decode.bytes + } +} + +// TODO: remove in 4.0.0? +function writeVarInt (buffer, number, offset) { + varuint.encode(number, buffer, offset) + return varuint.encode.bytes +} + +module.exports = { + pushDataSize: pushdata.encodingLength, + readPushDataInt: pushdata.decode, + readUInt64LE: readUInt64LE, + readVarInt: readVarInt, + varIntBuffer: varuint.encode, + varIntSize: varuint.encodingLength, + writePushDataInt: pushdata.encode, + writeUInt64LE: writeUInt64LE, + writeVarInt: writeVarInt +} + +},{"pushdata-bitcoin":98,"varuint-bitcoin":114}],47:[function(require,module,exports){ +var createHash = require('create-hash') + +function ripemd160 (buffer) { + return createHash('rmd160').update(buffer).digest() +} + +function sha1 (buffer) { + return createHash('sha1').update(buffer).digest() +} + +function sha256 (buffer) { + return createHash('sha256').update(buffer).digest() +} + +function hash160 (buffer) { + return ripemd160(sha256(buffer)) +} + +function hash256 (buffer) { + return sha256(sha256(buffer)) +} + +module.exports = { + hash160: hash160, + hash256: hash256, + ripemd160: ripemd160, + sha1: sha1, + sha256: sha256 +} + +},{"create-hash":85}],48:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var createHmac = require('create-hmac') +var typeforce = require('typeforce') +var types = require('./types') + +var BigInteger = require('bigi') +var ECSignature = require('./ecsignature') + +var ZERO = Buffer.alloc(1, 0) +var ONE = Buffer.alloc(1, 1) + +var ecurve = require('ecurve') +var secp256k1 = ecurve.getCurveByName('secp256k1') + +// https://tools.ietf.org/html/rfc6979#section-3.2 +function deterministicGenerateK (hash, x, checkSig) { + typeforce(types.tuple( + types.Hash256bit, + types.Buffer256bit, + types.Function + ), arguments) + + // Step A, ignored as hash already provided + // Step B + // Step C + var k = Buffer.alloc(32, 0) + var v = Buffer.alloc(32, 1) + + // Step D + k = createHmac('sha256', k) + .update(v) + .update(ZERO) + .update(x) + .update(hash) + .digest() + + // Step E + v = createHmac('sha256', k).update(v).digest() + + // Step F + k = createHmac('sha256', k) + .update(v) + .update(ONE) + .update(x) + .update(hash) + .digest() + + // Step G + v = createHmac('sha256', k).update(v).digest() + + // Step H1/H2a, ignored as tlen === qlen (256 bit) + // Step H2b + v = createHmac('sha256', k).update(v).digest() + + var T = BigInteger.fromBuffer(v) + + // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA + while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) { + k = createHmac('sha256', k) + .update(v) + .update(ZERO) + .digest() + + v = createHmac('sha256', k).update(v).digest() + + // Step H1/H2a, again, ignored as tlen === qlen (256 bit) + // Step H2b again + v = createHmac('sha256', k).update(v).digest() + T = BigInteger.fromBuffer(v) + } + + return T +} + +var N_OVER_TWO = secp256k1.n.shiftRight(1) + +function sign (hash, d) { + typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments) + + var x = d.toBuffer(32) + var e = BigInteger.fromBuffer(hash) + var n = secp256k1.n + var G = secp256k1.G + + var r, s + deterministicGenerateK(hash, x, function (k) { + var Q = G.multiply(k) + + if (secp256k1.isInfinity(Q)) return false + + r = Q.affineX.mod(n) + if (r.signum() === 0) return false + + s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n) + if (s.signum() === 0) return false + + return true + }) + + // enforce low S values, see bip62: 'low s values in signatures' + if (s.compareTo(N_OVER_TWO) > 0) { + s = n.subtract(s) + } + + return new ECSignature(r, s) +} + +function verify (hash, signature, Q) { + typeforce(types.tuple( + types.Hash256bit, + types.ECSignature, + types.ECPoint + ), arguments) + + var n = secp256k1.n + var G = secp256k1.G + + var r = signature.r + var s = signature.s + + // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1] + if (r.signum() <= 0 || r.compareTo(n) >= 0) return false + if (s.signum() <= 0 || s.compareTo(n) >= 0) return false + + // 1.4.2 H = Hash(M), already done by the user + // 1.4.3 e = H + var e = BigInteger.fromBuffer(hash) + + // Compute s^-1 + var sInv = s.modInverse(n) + + // 1.4.4 Compute u1 = es^−1 mod n + // u2 = rs^−1 mod n + var u1 = e.multiply(sInv).mod(n) + var u2 = r.multiply(sInv).mod(n) + + // 1.4.5 Compute R = (xR, yR) + // R = u1G + u2Q + var R = G.multiplyTwo(u1, Q, u2) + + // 1.4.5 (cont.) Enforce R is not at infinity + if (secp256k1.isInfinity(R)) return false + + // 1.4.6 Convert the field element R.x to an integer + var xR = R.affineX + + // 1.4.7 Set v = xR mod n + var v = xR.mod(n) + + // 1.4.8 If v = r, output "valid", and if v != r, output "invalid" + return v.equals(r) +} + +module.exports = { + deterministicGenerateK: deterministicGenerateK, + sign: sign, + verify: verify, + + // TODO: remove + __curve: secp256k1 +} + +},{"./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') +var randomBytes = require('randombytes') +var typeforce = require('typeforce') +var types = require('./types') +var wif = require('wif') + +var NETWORKS = require('./networks') +var BigInteger = require('bigi') + +var ecurve = require('ecurve') +var secp256k1 = ecdsa.__curve + +function ECPair (d, Q, options) { + if (options) { + typeforce({ + compressed: types.maybe(types.Boolean), + network: types.maybe(types.Network) + }, options) + } + + options = options || {} + + if (d) { + if (d.signum() <= 0) throw new Error('Private key must be greater than 0') + if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order') + if (Q) throw new TypeError('Unexpected publicKey parameter') + + this.d = d + } else { + typeforce(types.ECPoint, Q) + + this.__Q = Q + } + + this.compressed = options.compressed === undefined ? true : options.compressed + this.network = options.network || NETWORKS.bitcoin +} + +Object.defineProperty(ECPair.prototype, 'Q', { + get: function () { + if (!this.__Q && this.d) { + this.__Q = secp256k1.G.multiply(this.d) + } + + return this.__Q + } +}) + +ECPair.fromPublicKeyBuffer = function (buffer, network) { + var Q = ecurve.Point.decodeFrom(secp256k1, buffer) + + return new ECPair(null, Q, { + compressed: Q.compressed, + network: network + }) +} + +ECPair.fromWIF = function (string, network) { + var decoded = wif.decode(string) + var version = decoded.version + + // list of networks? + if (types.Array(network)) { + network = network.filter(function (x) { + return version === x.wif + }).pop() + + if (!network) throw new Error('Unknown network version') + + // otherwise, assume a network object (or default to bitcoin) + } else { + network = network || NETWORKS.bitcoin + + if (version !== network.wif) throw new Error('Invalid network version') + } + + var d = BigInteger.fromBuffer(decoded.privateKey) + + return new ECPair(d, null, { + compressed: decoded.compressed, + network: network + }) +} + +ECPair.makeRandom = function (options) { + options = options || {} + + var rng = options.rng || randomBytes + + var d + do { + var buffer = rng(32) + typeforce(types.Buffer256bit, buffer) + + d = BigInteger.fromBuffer(buffer) + } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0) + + return new ECPair(d, null, options) +} + +ECPair.prototype.getAddress = function () { + return baddress.toBase58Check(bcrypto.hash160(this.getPublicKeyBuffer()), this.getNetwork().pubKeyHash) +} + +ECPair.prototype.getNetwork = function () { + return this.network +} + +ECPair.prototype.getPublicKeyBuffer = function () { + return this.Q.getEncoded(this.compressed) +} + +ECPair.prototype.sign = function (hash) { + if (!this.d) throw new Error('Missing private key') + + return ecdsa.sign(hash, this.d) +} + +ECPair.prototype.toWIF = function () { + if (!this.d) throw new Error('Missing private key') + + return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed) +} + +ECPair.prototype.verify = function (hash, signature) { + return ecdsa.verify(hash, signature, this.Q) +} + +module.exports = ECPair + +},{"./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') +var types = require('./types') + +var BigInteger = require('bigi') + +function ECSignature (r, s) { + typeforce(types.tuple(types.BigInt, types.BigInt), arguments) + + this.r = r + this.s = s +} + +ECSignature.parseCompact = function (buffer) { + typeforce(types.BufferN(65), buffer) + + var flagByte = buffer.readUInt8(0) - 27 + if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter') + + var compressed = !!(flagByte & 4) + var recoveryParam = flagByte & 3 + var signature = ECSignature.fromRSBuffer(buffer.slice(1)) + + return { + compressed: compressed, + i: recoveryParam, + signature: signature + } +} + +ECSignature.fromRSBuffer = function (buffer) { + typeforce(types.BufferN(64), buffer) + + var r = BigInteger.fromBuffer(buffer.slice(0, 32)) + var s = BigInteger.fromBuffer(buffer.slice(32, 64)) + return new ECSignature(r, s) +} + +ECSignature.fromDER = function (buffer) { + var decode = bip66.decode(buffer) + var r = BigInteger.fromDERInteger(decode.r) + var s = BigInteger.fromDERInteger(decode.s) + + return new ECSignature(r, s) +} + +// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed) +ECSignature.parseScriptSignature = function (buffer) { + var hashType = buffer.readUInt8(buffer.length - 1) + var hashTypeMod = hashType & ~0x80 + + if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType) + + return { + signature: ECSignature.fromDER(buffer.slice(0, -1)), + hashType: hashType + } +} + +ECSignature.prototype.toCompact = function (i, compressed) { + if (compressed) { + i += 4 + } + + i += 27 + + var buffer = Buffer.alloc(65) + buffer.writeUInt8(i, 0) + this.toRSBuffer(buffer, 1) + return buffer +} + +ECSignature.prototype.toDER = function () { + var r = Buffer.from(this.r.toDERInteger()) + var s = Buffer.from(this.s.toDERInteger()) + + return bip66.encode(r, s) +} + +ECSignature.prototype.toRSBuffer = function (buffer, offset) { + buffer = buffer || Buffer.alloc(64) + this.r.toBuffer(32).copy(buffer, offset) + this.s.toBuffer(32).copy(buffer, offset + 32) + return buffer +} + +ECSignature.prototype.toScriptSignature = function (hashType) { + var hashTypeMod = hashType & ~0x80 + if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType) + + var hashTypeBuffer = Buffer.alloc(1) + hashTypeBuffer.writeUInt8(hashType, 0) + + return Buffer.concat([this.toDER(), hashTypeBuffer]) +} + +module.exports = ECSignature + +}).call(this,require("buffer").Buffer) +},{"./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') +var createHmac = require('create-hmac') +var typeforce = require('typeforce') +var types = require('./types') +var NETWORKS = require('./networks') + +var BigInteger = require('bigi') +var ECPair = require('./ecpair') + +var ecurve = require('ecurve') +var curve = ecurve.getCurveByName('secp256k1') + +function HDNode (keyPair, chainCode) { + typeforce(types.tuple('ECPair', types.Buffer256bit), arguments) + + if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs') + + this.keyPair = keyPair + this.chainCode = chainCode + this.depth = 0 + this.index = 0 + this.parentFingerprint = 0x00000000 +} + +HDNode.HIGHEST_BIT = 0x80000000 +HDNode.LENGTH = 78 +HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8') + +HDNode.fromSeedBuffer = function (seed, network) { + typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments) + + if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits') + if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits') + + var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest() + var IL = I.slice(0, 32) + var IR = I.slice(32) + + // In case IL is 0 or >= n, the master key is invalid + // This is handled by the ECPair constructor + var pIL = BigInteger.fromBuffer(IL) + var keyPair = new ECPair(pIL, null, { + network: network + }) + + return new HDNode(keyPair, IR) +} + +HDNode.fromSeedHex = function (hex, network) { + return HDNode.fromSeedBuffer(Buffer.from(hex, 'hex'), network) +} + +HDNode.fromBase58 = function (string, networks) { + var buffer = base58check.decode(string) + if (buffer.length !== 78) throw new Error('Invalid buffer length') + + // 4 bytes: version bytes + var version = buffer.readUInt32BE(0) + var network + + // list of networks? + if (Array.isArray(networks)) { + network = networks.filter(function (x) { + return version === x.bip32.private || + version === x.bip32.public + }).pop() + + if (!network) throw new Error('Unknown network version') + + // otherwise, assume a network object (or default to bitcoin) + } else { + network = networks || NETWORKS.bitcoin + } + + if (version !== network.bip32.private && + version !== network.bip32.public) throw new Error('Invalid network version') + + // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ... + var depth = buffer[4] + + // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) + var parentFingerprint = buffer.readUInt32BE(5) + if (depth === 0) { + if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint') + } + + // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. + // This is encoded in MSB order. (0x00000000 if master key) + var index = buffer.readUInt32BE(9) + if (depth === 0 && index !== 0) throw new Error('Invalid index') + + // 32 bytes: the chain code + var chainCode = buffer.slice(13, 45) + var keyPair + + // 33 bytes: private key data (0x00 + k) + if (version === network.bip32.private) { + if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key') + + var d = BigInteger.fromBuffer(buffer.slice(46, 78)) + keyPair = new ECPair(d, null, { network: network }) + + // 33 bytes: public key data (0x02 + X or 0x03 + X) + } else { + var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78)) + // Q.compressed is assumed, if somehow this assumption is broken, `new HDNode` will throw + + // Verify that the X coordinate in the public point corresponds to a point on the curve. + // If not, the extended public key is invalid. + curve.validate(Q) + + keyPair = new ECPair(null, Q, { network: network }) + } + + var hd = new HDNode(keyPair, chainCode) + hd.depth = depth + hd.index = index + hd.parentFingerprint = parentFingerprint + + return hd +} + +HDNode.prototype.getAddress = function () { + return this.keyPair.getAddress() +} + +HDNode.prototype.getIdentifier = function () { + return bcrypto.hash160(this.keyPair.getPublicKeyBuffer()) +} + +HDNode.prototype.getFingerprint = function () { + return this.getIdentifier().slice(0, 4) +} + +HDNode.prototype.getNetwork = function () { + return this.keyPair.getNetwork() +} + +HDNode.prototype.getPublicKeyBuffer = function () { + return this.keyPair.getPublicKeyBuffer() +} + +HDNode.prototype.neutered = function () { + var neuteredKeyPair = new ECPair(null, this.keyPair.Q, { + network: this.keyPair.network + }) + + var neutered = new HDNode(neuteredKeyPair, this.chainCode) + neutered.depth = this.depth + neutered.index = this.index + neutered.parentFingerprint = this.parentFingerprint + + return neutered +} + +HDNode.prototype.sign = function (hash) { + return this.keyPair.sign(hash) +} + +HDNode.prototype.verify = function (hash, signature) { + return this.keyPair.verify(hash, signature) +} + +HDNode.prototype.toBase58 = function (__isPrivate) { + if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0') + + // Version + var network = this.keyPair.network + var version = (!this.isNeutered()) ? network.bip32.private : network.bip32.public + var buffer = Buffer.allocUnsafe(78) + + // 4 bytes: version bytes + buffer.writeUInt32BE(version, 0) + + // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, .... + buffer.writeUInt8(this.depth, 4) + + // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key) + buffer.writeUInt32BE(this.parentFingerprint, 5) + + // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized. + // This is encoded in big endian. (0x00000000 if master key) + buffer.writeUInt32BE(this.index, 9) + + // 32 bytes: the chain code + this.chainCode.copy(buffer, 13) + + // 33 bytes: the public key or private key data + if (!this.isNeutered()) { + // 0x00 + k for private keys + buffer.writeUInt8(0, 45) + this.keyPair.d.toBuffer(32).copy(buffer, 46) + + // 33 bytes: the public key + } else { + // X9.62 encoding for public keys + this.keyPair.getPublicKeyBuffer().copy(buffer, 45) + } + + return base58check.encode(buffer) +} + +// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions +HDNode.prototype.derive = function (index) { + typeforce(types.UInt32, index) + + var isHardened = index >= HDNode.HIGHEST_BIT + var data = Buffer.allocUnsafe(37) + + // Hardened child + if (isHardened) { + if (this.isNeutered()) throw new TypeError('Could not derive hardened child key') + + // data = 0x00 || ser256(kpar) || ser32(index) + data[0] = 0x00 + this.keyPair.d.toBuffer(32).copy(data, 1) + data.writeUInt32BE(index, 33) + + // Normal child + } else { + // data = serP(point(kpar)) || ser32(index) + // = serP(Kpar) || ser32(index) + this.keyPair.getPublicKeyBuffer().copy(data, 0) + data.writeUInt32BE(index, 33) + } + + var I = createHmac('sha512', this.chainCode).update(data).digest() + var IL = I.slice(0, 32) + var IR = I.slice(32) + + var pIL = BigInteger.fromBuffer(IL) + + // In case parse256(IL) >= n, proceed with the next value for i + if (pIL.compareTo(curve.n) >= 0) { + return this.derive(index + 1) + } + + // Private parent key -> private child key + var derivedKeyPair + if (!this.isNeutered()) { + // ki = parse256(IL) + kpar (mod n) + var ki = pIL.add(this.keyPair.d).mod(curve.n) + + // In case ki == 0, proceed with the next value for i + if (ki.signum() === 0) { + return this.derive(index + 1) + } + + derivedKeyPair = new ECPair(ki, null, { + network: this.keyPair.network + }) + + // Public parent key -> public child key + } else { + // Ki = point(parse256(IL)) + Kpar + // = G*IL + Kpar + var Ki = curve.G.multiply(pIL).add(this.keyPair.Q) + + // In case Ki is the point at infinity, proceed with the next value for i + if (curve.isInfinity(Ki)) { + return this.derive(index + 1) + } + + derivedKeyPair = new ECPair(null, Ki, { + network: this.keyPair.network + }) + } + + var hd = new HDNode(derivedKeyPair, IR) + hd.depth = this.depth + 1 + hd.index = index + hd.parentFingerprint = this.getFingerprint().readUInt32BE(0) + + return hd +} + +HDNode.prototype.deriveHardened = function (index) { + typeforce(types.UInt31, index) + + // Only derives hardened private keys by default + return this.derive(index + HDNode.HIGHEST_BIT) +} + +// Private === not neutered +// Public === neutered +HDNode.prototype.isNeutered = function () { + return !(this.keyPair.d) +} + +HDNode.prototype.derivePath = function (path) { + typeforce(types.BIP32Path, path) + + var splitPath = path.split('/') + if (splitPath[0] === 'm') { + if (this.parentFingerprint) { + throw new Error('Not a master node') + } + + splitPath = splitPath.slice(1) + } + + return splitPath.reduce(function (prevHd, indexStr) { + var index + if (indexStr.slice(-1) === "'") { + index = parseInt(indexStr.slice(0, -1), 10) + return prevHd.deriveHardened(index) + } else { + index = parseInt(indexStr, 10) + return prevHd.derive(index) + } + }, this) +} + +module.exports = HDNode + +},{"./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') +for (var key in templates) { + script[key] = templates[key] +} + +module.exports = { + bufferutils: require('./bufferutils'), // TODO: remove in 4.0.0 + + Block: require('./block'), + ECPair: require('./ecpair'), + ECSignature: require('./ecsignature'), + HDNode: require('./hdnode'), + Transaction: require('./transaction'), + TransactionBuilder: require('./transaction_builder'), + + address: require('./address'), + crypto: require('./crypto'), + networks: require('./networks'), + opcodes: require('bitcoin-ops'), + script: script +} + +},{"./address":44,"./block":45,"./bufferutils":46,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./hdnode":51,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./transaction_builder":79,"bitcoin-ops":42}],53:[function(require,module,exports){ +// https://en.bitcoin.it/wiki/List_of_address_prefixes +// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731 + +module.exports = { + bitcoin: { + messagePrefix: '\x18Bitcoin Signed Message:\n', + bech32: 'bc', + bip32: { + public: 0x0488b21e, + private: 0x0488ade4 + }, + pubKeyHash: 0x00, + scriptHash: 0x05, + wif: 0x80 + }, + testnet: { + messagePrefix: '\x18Bitcoin Signed Message:\n', + bech32: 'tb', + bip32: { + public: 0x043587cf, + private: 0x04358394 + }, + pubKeyHash: 0x6f, + scriptHash: 0xc4, + wif: 0xef + }, + litecoin: { + messagePrefix: '\x19Litecoin Signed Message:\n', + bip32: { + public: 0x019da462, + private: 0x019d9cfe + }, + pubKeyHash: 0x30, + scriptHash: 0x32, + wif: 0xb0 + } +} + +},{}],54:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var bip66 = require('bip66') +var pushdata = require('pushdata-bitcoin') +var typeforce = require('typeforce') +var types = require('./types') +var scriptNumber = require('./script_number') + +var OPS = require('bitcoin-ops') +var REVERSE_OPS = require('bitcoin-ops/map') +var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 + +function isOPInt (value) { + return types.Number(value) && + ((value === OPS.OP_0) || + (value >= OPS.OP_1 && value <= OPS.OP_16) || + (value === OPS.OP_1NEGATE)) +} + +function isPushOnlyChunk (value) { + return types.Buffer(value) || isOPInt(value) +} + +function isPushOnly (value) { + return types.Array(value) && value.every(isPushOnlyChunk) +} + +function asMinimalOP (buffer) { + if (buffer.length === 0) return OPS.OP_0 + if (buffer.length !== 1) return + if (buffer[0] >= 1 && buffer[0] <= 16) return OP_INT_BASE + buffer[0] + if (buffer[0] === 0x81) return OPS.OP_1NEGATE +} + +function compile (chunks) { + // TODO: remove me + if (Buffer.isBuffer(chunks)) return chunks + + typeforce(types.Array, chunks) + + var bufferSize = chunks.reduce(function (accum, chunk) { + // data chunk + if (Buffer.isBuffer(chunk)) { + // adhere to BIP62.3, minimal push policy + if (chunk.length === 1 && asMinimalOP(chunk) !== undefined) { + return accum + 1 + } + + return accum + pushdata.encodingLength(chunk.length) + chunk.length + } + + // opcode + return accum + 1 + }, 0.0) + + var buffer = Buffer.allocUnsafe(bufferSize) + var offset = 0 + + chunks.forEach(function (chunk) { + // data chunk + if (Buffer.isBuffer(chunk)) { + // adhere to BIP62.3, minimal push policy + var opcode = asMinimalOP(chunk) + if (opcode !== undefined) { + buffer.writeUInt8(opcode, offset) + offset += 1 + return + } + + offset += pushdata.encode(buffer, chunk.length, offset) + chunk.copy(buffer, offset) + offset += chunk.length + + // opcode + } else { + buffer.writeUInt8(chunk, offset) + offset += 1 + } + }) + + if (offset !== buffer.length) throw new Error('Could not decode chunks') + return buffer +} + +function decompile (buffer) { + // TODO: remove me + if (types.Array(buffer)) return buffer + + typeforce(types.Buffer, buffer) + + var chunks = [] + var i = 0 + + while (i < buffer.length) { + var opcode = buffer[i] + + // data chunk + if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) { + var d = pushdata.decode(buffer, i) + + // did reading a pushDataInt fail? empty script + if (d === null) return [] + i += d.size + + // attempt to read too much data? empty script + if (i + d.number > buffer.length) return [] + + var data = buffer.slice(i, i + d.number) + i += d.number + + // decompile minimally + var op = asMinimalOP(data) + if (op !== undefined) { + chunks.push(op) + } else { + chunks.push(data) + } + + // opcode + } else { + chunks.push(opcode) + + i += 1 + } + } + + return chunks +} + +function toASM (chunks) { + if (Buffer.isBuffer(chunks)) { + chunks = decompile(chunks) + } + + return chunks.map(function (chunk) { + // data? + if (Buffer.isBuffer(chunk)) { + var op = asMinimalOP(chunk) + if (op === undefined) return chunk.toString('hex') + chunk = op + } + + // opcode! + return REVERSE_OPS[chunk] + }).join(' ') +} + +function fromASM (asm) { + typeforce(types.String, asm) + + return compile(asm.split(' ').map(function (chunkStr) { + // opcode? + if (OPS[chunkStr] !== undefined) return OPS[chunkStr] + typeforce(types.Hex, chunkStr) + + // data! + return Buffer.from(chunkStr, 'hex') + })) +} + +function toStack (chunks) { + chunks = decompile(chunks) + typeforce(isPushOnly, chunks) + + return chunks.map(function (op) { + if (Buffer.isBuffer(op)) return op + if (op === OPS.OP_0) return Buffer.allocUnsafe(0) + + return scriptNumber.encode(op - OP_INT_BASE) + }) +} + +function isCanonicalPubKey (buffer) { + if (!Buffer.isBuffer(buffer)) return false + if (buffer.length < 33) return false + + switch (buffer[0]) { + case 0x02: + case 0x03: + return buffer.length === 33 + case 0x04: + return buffer.length === 65 + } + + return false +} + +function isDefinedHashType (hashType) { + var hashTypeMod = hashType & ~0x80 + +// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE + return hashTypeMod > 0x00 && hashTypeMod < 0x04 +} + +function isCanonicalSignature (buffer) { + if (!Buffer.isBuffer(buffer)) return false + if (!isDefinedHashType(buffer[buffer.length - 1])) return false + + return bip66.check(buffer.slice(0, -1)) +} + +module.exports = { + compile: compile, + decompile: decompile, + fromASM: fromASM, + toASM: toASM, + toStack: toStack, + + number: require('./script_number'), + + isCanonicalPubKey: isCanonicalPubKey, + isCanonicalSignature: isCanonicalSignature, + isPushOnly: isPushOnly, + isDefinedHashType: isDefinedHashType +} + +},{"./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) { + maxLength = maxLength || 4 + minimal = minimal === undefined ? true : minimal + + var length = buffer.length + if (length === 0) return 0 + if (length > maxLength) throw new TypeError('Script number overflow') + if (minimal) { + if ((buffer[length - 1] & 0x7f) === 0) { + if (length <= 1 || (buffer[length - 2] & 0x80) === 0) throw new Error('Non-minimally encoded script number') + } + } + + // 40-bit + if (length === 5) { + var a = buffer.readUInt32LE(0) + var b = buffer.readUInt8(4) + + if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a) + return (b * 0x100000000) + a + } + + var result = 0 + + // 32-bit / 24-bit / 16-bit / 8-bit + for (var i = 0; i < length; ++i) { + result |= buffer[i] << (8 * i) + } + + if (buffer[length - 1] & 0x80) return -(result & ~(0x80 << (8 * (length - 1)))) + return result +} + +function scriptNumSize (i) { + return i > 0x7fffffff ? 5 + : i > 0x7fffff ? 4 + : i > 0x7fff ? 3 + : i > 0x7f ? 2 + : i > 0x00 ? 1 + : 0 +} + +function encode (number) { + var value = Math.abs(number) + var size = scriptNumSize(value) + var buffer = Buffer.allocUnsafe(size) + var negative = number < 0 + + for (var i = 0; i < size; ++i) { + buffer.writeUInt8(value & 0xff, i) + value >>= 8 + } + + if (buffer[size - 1] & 0x80) { + buffer.writeUInt8(negative ? 0x80 : 0x00, size - 1) + } else if (negative) { + buffer[size - 1] |= 0x80 + } + + return buffer +} + +module.exports = { + decode: decode, + encode: encode +} + +},{"safe-buffer":101}],56:[function(require,module,exports){ +var decompile = require('../script').decompile +var multisig = require('./multisig') +var nullData = require('./nulldata') +var pubKey = require('./pubkey') +var pubKeyHash = require('./pubkeyhash') +var scriptHash = require('./scripthash') +var witnessPubKeyHash = require('./witnesspubkeyhash') +var witnessScriptHash = require('./witnessscripthash') +var witnessCommitment = require('./witnesscommitment') + +var types = { + MULTISIG: 'multisig', + NONSTANDARD: 'nonstandard', + NULLDATA: 'nulldata', + P2PK: 'pubkey', + P2PKH: 'pubkeyhash', + P2SH: 'scripthash', + P2WPKH: 'witnesspubkeyhash', + P2WSH: 'witnessscripthash', + WITNESS_COMMITMENT: 'witnesscommitment' +} + +function classifyOutput (script) { + if (witnessPubKeyHash.output.check(script)) return types.P2WPKH + if (witnessScriptHash.output.check(script)) return types.P2WSH + if (pubKeyHash.output.check(script)) return types.P2PKH + if (scriptHash.output.check(script)) return types.P2SH + + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + if (multisig.output.check(chunks)) return types.MULTISIG + if (pubKey.output.check(chunks)) return types.P2PK + if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT + if (nullData.output.check(chunks)) return types.NULLDATA + + return types.NONSTANDARD +} + +function classifyInput (script, allowIncomplete) { + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + + if (pubKeyHash.input.check(chunks)) return types.P2PKH + if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH + if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG + if (pubKey.input.check(chunks)) return types.P2PK + + return types.NONSTANDARD +} + +function classifyWitness (script, allowIncomplete) { + // XXX: optimization, below functions .decompile before use + var chunks = decompile(script) + + if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH + if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH + + return types.NONSTANDARD +} + +module.exports = { + classifyInput: classifyInput, + classifyOutput: classifyOutput, + classifyWitness: classifyWitness, + multisig: multisig, + nullData: nullData, + pubKey: pubKey, + pubKeyHash: pubKeyHash, + scriptHash: scriptHash, + witnessPubKeyHash: witnessPubKeyHash, + witnessScriptHash: witnessScriptHash, + witnessCommitment: witnessCommitment, + types: types +} + +},{"../script":54,"./multisig":57,"./nulldata":60,"./pubkey":61,"./pubkeyhash":64,"./scripthash":67,"./witnesscommitment":70,"./witnesspubkeyhash":72,"./witnessscripthash":75}],57:[function(require,module,exports){ +module.exports = { + input: require('./input'), + output: require('./output') +} + +},{"./input":58,"./output":59}],58:[function(require,module,exports){ +// OP_0 [signatures ...] + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var p2mso = require('./output') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function partialSignature (value) { + return value === OPS.OP_0 || bscript.isCanonicalSignature(value) +} + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + if (chunks.length < 2) return false + if (chunks[0] !== OPS.OP_0) return false + + if (allowIncomplete) { + return chunks.slice(1).every(partialSignature) + } + + return chunks.slice(1).every(bscript.isCanonicalSignature) +} +check.toJSON = function () { return 'multisig input' } + +var EMPTY_BUFFER = Buffer.allocUnsafe(0) + +function encodeStack (signatures, scriptPubKey) { + typeforce([partialSignature], signatures) + + if (scriptPubKey) { + var scriptData = p2mso.decode(scriptPubKey) + + if (signatures.length < scriptData.m) { + throw new TypeError('Not enough signatures provided') + } + + if (signatures.length > scriptData.pubKeys.length) { + throw new TypeError('Too many signatures provided') + } + } + + return [].concat(EMPTY_BUFFER, signatures.map(function (sig) { + if (sig === OPS.OP_0) { + return EMPTY_BUFFER + } + return sig + })) +} + +function encode (signatures, scriptPubKey) { + return bscript.compile(encodeStack(signatures, scriptPubKey)) +} + +function decodeStack (stack, allowIncomplete) { + typeforce(typeforce.Array, stack) + typeforce(check, stack, allowIncomplete) + return stack.slice(1) +} + +function decode (buffer, allowIncomplete) { + var stack = bscript.decompile(buffer) + return decodeStack(stack, allowIncomplete) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../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') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') +var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1 + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + + if (chunks.length < 4) return false + if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false + if (!types.Number(chunks[0])) return false + if (!types.Number(chunks[chunks.length - 2])) return false + var m = chunks[0] - OP_INT_BASE + var n = chunks[chunks.length - 2] - OP_INT_BASE + + if (m <= 0) return false + if (n > 16) return false + if (m > n) return false + if (n !== chunks.length - 3) return false + if (allowIncomplete) return true + + var keys = chunks.slice(1, -2) + return keys.every(bscript.isCanonicalPubKey) +} +check.toJSON = function () { return 'multi-sig output' } + +function encode (m, pubKeys) { + typeforce({ + m: types.Number, + pubKeys: [bscript.isCanonicalPubKey] + }, { + m: m, + pubKeys: pubKeys + }) + + var n = pubKeys.length + if (n < m) throw new TypeError('Not enough pubKeys provided') + + return bscript.compile([].concat( + OP_INT_BASE + m, + pubKeys, + OP_INT_BASE + n, + OPS.OP_CHECKMULTISIG + )) +} + +function decode (buffer, allowIncomplete) { + var chunks = bscript.decompile(buffer) + typeforce(check, chunks, allowIncomplete) + + return { + m: chunks[0] - OP_INT_BASE, + pubKeys: chunks.slice(1, -2) + } +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],60:[function(require,module,exports){ +// OP_RETURN {data} + +var bscript = require('../script') +var types = require('../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length > 1 && + buffer[0] === OPS.OP_RETURN +} +check.toJSON = function () { return 'null data output' } + +function encode (data) { + typeforce(types.Buffer, data) + + return bscript.compile([OPS.OP_RETURN, data]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + output: { + check: check, + decode: decode, + encode: encode + } +} + +},{"../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} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 1 && + bscript.isCanonicalSignature(chunks[0]) +} +check.toJSON = function () { return 'pubKey input' } + +function encodeStack (signature) { + typeforce(bscript.isCanonicalSignature, signature) + return [signature] +} + +function encode (signature) { + return bscript.compile(encodeStack(signature)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + return stack[0] +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + return decodeStack(stack) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":54,"typeforce":112}],63:[function(require,module,exports){ +// {pubKey} OP_CHECKSIG + +var bscript = require('../../script') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalPubKey(chunks[0]) && + chunks[1] === OPS.OP_CHECKSIG +} +check.toJSON = function () { return 'pubKey output' } + +function encode (pubKey) { + typeforce(bscript.isCanonicalPubKey, pubKey) + + return bscript.compile([pubKey, OPS.OP_CHECKSIG]) +} + +function decode (buffer) { + var chunks = bscript.decompile(buffer) + typeforce(check, chunks) + + return chunks[0] +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../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} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalSignature(chunks[0]) && + bscript.isCanonicalPubKey(chunks[1]) +} +check.toJSON = function () { return 'pubKeyHash input' } + +function encodeStack (signature, pubKey) { + typeforce({ + signature: bscript.isCanonicalSignature, + pubKey: bscript.isCanonicalPubKey + }, { + signature: signature, + pubKey: pubKey + }) + + return [signature, pubKey] +} + +function encode (signature, pubKey) { + return bscript.compile(encodeStack(signature, pubKey)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + signature: stack[0], + pubKey: stack[1] + } +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + return decodeStack(stack) +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../script":54,"typeforce":112}],66:[function(require,module,exports){ +// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 25 && + buffer[0] === OPS.OP_DUP && + buffer[1] === OPS.OP_HASH160 && + buffer[2] === 0x14 && + buffer[23] === OPS.OP_EQUALVERIFY && + buffer[24] === OPS.OP_CHECKSIG +} +check.toJSON = function () { return 'pubKeyHash output' } + +function encode (pubKeyHash) { + typeforce(types.Hash160bit, pubKeyHash) + + return bscript.compile([ + OPS.OP_DUP, + OPS.OP_HASH160, + pubKeyHash, + OPS.OP_EQUALVERIFY, + OPS.OP_CHECKSIG + ]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(3, 23) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../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){ +// {serialized scriptPubKey script} + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var typeforce = require('typeforce') + +var p2ms = require('../multisig/') +var p2pk = require('../pubkey/') +var p2pkh = require('../pubkeyhash/') +var p2wpkho = require('../witnesspubkeyhash/output') +var p2wsho = require('../witnessscripthash/output') + +function check (script, allowIncomplete) { + var chunks = bscript.decompile(script) + if (chunks.length < 1) return false + + var lastChunk = chunks[chunks.length - 1] + if (!Buffer.isBuffer(lastChunk)) return false + + var scriptSigChunks = bscript.decompile(bscript.compile(chunks.slice(0, -1))) + var redeemScriptChunks = bscript.decompile(lastChunk) + + // is redeemScript a valid script? + if (redeemScriptChunks.length === 0) return false + + // is redeemScriptSig push only? + if (!bscript.isPushOnly(scriptSigChunks)) return false + + // is witness? + if (chunks.length === 1) { + return p2wsho.check(redeemScriptChunks) || + p2wpkho.check(redeemScriptChunks) + } + + // match types + if (p2pkh.input.check(scriptSigChunks) && + p2pkh.output.check(redeemScriptChunks)) return true + + if (p2ms.input.check(scriptSigChunks, allowIncomplete) && + p2ms.output.check(redeemScriptChunks)) return true + + if (p2pk.input.check(scriptSigChunks) && + p2pk.output.check(redeemScriptChunks)) return true + + return false +} +check.toJSON = function () { return 'scriptHash input' } + +function encodeStack (redeemScriptStack, redeemScript) { + var serializedScriptPubKey = bscript.compile(redeemScript) + + return [].concat(redeemScriptStack, serializedScriptPubKey) +} + +function encode (redeemScriptSig, redeemScript) { + var redeemScriptStack = bscript.decompile(redeemScriptSig) + + return bscript.compile(encodeStack(redeemScriptStack, redeemScript)) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + redeemScriptStack: stack.slice(0, -1), + redeemScript: stack[stack.length - 1] + } +} + +function decode (buffer) { + var stack = bscript.decompile(buffer) + var result = decodeStack(stack) + result.redeemScriptSig = bscript.compile(result.redeemScriptStack) + delete result.redeemScriptStack + return result +} + +module.exports = { + check: check, + decode: decode, + decodeStack: decodeStack, + encode: encode, + encodeStack: encodeStack +} + +},{"../../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') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 23 && + buffer[0] === OPS.OP_HASH160 && + buffer[1] === 0x14 && + buffer[22] === OPS.OP_EQUAL +} +check.toJSON = function () { return 'scriptHash output' } + +function encode (scriptHash) { + typeforce(types.Hash160bit, scriptHash) + + return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2, 22) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":112}],70:[function(require,module,exports){ +module.exports = { + output: require('./output') +} + +},{"./output":71}],71:[function(require,module,exports){ +// OP_RETURN {aa21a9ed} {commitment} + +var Buffer = require('safe-buffer').Buffer +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +var HEADER = Buffer.from('aa21a9ed', 'hex') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length > 37 && + buffer[0] === OPS.OP_RETURN && + buffer[1] === 0x24 && + buffer.slice(2, 6).equals(HEADER) +} + +check.toJSON = function () { return 'Witness commitment output' } + +function encode (commitment) { + typeforce(types.Hash256bit, commitment) + + var buffer = Buffer.allocUnsafe(36) + HEADER.copy(buffer, 0) + commitment.copy(buffer, 4) + + return bscript.compile([OPS.OP_RETURN, buffer]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return bscript.decompile(buffer)[1].slice(4, 36) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../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} + +var bscript = require('../../script') +var typeforce = require('typeforce') + +function isCompressedCanonicalPubKey (pubKey) { + return bscript.isCanonicalPubKey(pubKey) && pubKey.length === 33 +} + +function check (script) { + var chunks = bscript.decompile(script) + + return chunks.length === 2 && + bscript.isCanonicalSignature(chunks[0]) && + isCompressedCanonicalPubKey(chunks[1]) +} +check.toJSON = function () { return 'witnessPubKeyHash input' } + +function encodeStack (signature, pubKey) { + typeforce({ + signature: bscript.isCanonicalSignature, + pubKey: isCompressedCanonicalPubKey + }, { + signature: signature, + pubKey: pubKey + }) + + return [signature, pubKey] +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + + return { + signature: stack[0], + pubKey: stack[1] + } +} + +module.exports = { + check: check, + decodeStack: decodeStack, + encodeStack: encodeStack +} + +},{"../../script":54,"typeforce":112}],74:[function(require,module,exports){ +// OP_0 {pubKeyHash} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 22 && + buffer[0] === OPS.OP_0 && + buffer[1] === 0x14 +} +check.toJSON = function () { return 'Witness pubKeyHash output' } + +function encode (pubKeyHash) { + typeforce(types.Hash160bit, pubKeyHash) + + return bscript.compile([OPS.OP_0, pubKeyHash]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../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){ +// {serialized scriptPubKey script} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') + +var p2ms = require('../multisig/') +var p2pk = require('../pubkey/') +var p2pkh = require('../pubkeyhash/') + +function check (chunks, allowIncomplete) { + typeforce(types.Array, chunks) + if (chunks.length < 1) return false + + var witnessScript = chunks[chunks.length - 1] + if (!Buffer.isBuffer(witnessScript)) return false + + var witnessScriptChunks = bscript.decompile(witnessScript) + + // is witnessScript a valid script? + if (witnessScriptChunks.length === 0) return false + + var witnessRawScriptSig = bscript.compile(chunks.slice(0, -1)) + + // match types + if (p2pkh.input.check(witnessRawScriptSig) && + p2pkh.output.check(witnessScriptChunks)) return true + + if (p2ms.input.check(witnessRawScriptSig, allowIncomplete) && + p2ms.output.check(witnessScriptChunks)) return true + + if (p2pk.input.check(witnessRawScriptSig) && + p2pk.output.check(witnessScriptChunks)) return true + + return false +} +check.toJSON = function () { return 'witnessScriptHash input' } + +function encodeStack (witnessData, witnessScript) { + typeforce({ + witnessData: [types.Buffer], + witnessScript: types.Buffer + }, { + witnessData: witnessData, + witnessScript: witnessScript + }) + + return [].concat(witnessData, witnessScript) +} + +function decodeStack (stack) { + typeforce(typeforce.Array, stack) + typeforce(check, stack) + return { + witnessData: stack.slice(0, -1), + witnessScript: stack[stack.length - 1] + } +} + +module.exports = { + check: check, + decodeStack: decodeStack, + encodeStack: encodeStack +} + +}).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":112}],77:[function(require,module,exports){ +// OP_0 {scriptHash} + +var bscript = require('../../script') +var types = require('../../types') +var typeforce = require('typeforce') +var OPS = require('bitcoin-ops') + +function check (script) { + var buffer = bscript.compile(script) + + return buffer.length === 34 && + buffer[0] === OPS.OP_0 && + buffer[1] === 0x20 +} +check.toJSON = function () { return 'Witness scriptHash output' } + +function encode (scriptHash) { + typeforce(types.Hash256bit, scriptHash) + + return bscript.compile([OPS.OP_0, scriptHash]) +} + +function decode (buffer) { + typeforce(check, buffer) + + return buffer.slice(2) +} + +module.exports = { + check: check, + decode: decode, + encode: encode +} + +},{"../../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') +var bufferutils = require('./bufferutils') +var opcodes = require('bitcoin-ops') +var typeforce = require('typeforce') +var types = require('./types') +var varuint = require('varuint-bitcoin') + +function varSliceSize (someScript) { + var length = someScript.length + + return varuint.encodingLength(length) + length +} + +function vectorSize (someVector) { + var length = someVector.length + + return varuint.encodingLength(length) + someVector.reduce(function (sum, witness) { + return sum + varSliceSize(witness) + }, 0) +} + +function Transaction () { + this.version = 1 + this.locktime = 0 + this.ins = [] + this.outs = [] +} + +Transaction.DEFAULT_SEQUENCE = 0xffffffff +Transaction.SIGHASH_ALL = 0x01 +Transaction.SIGHASH_NONE = 0x02 +Transaction.SIGHASH_SINGLE = 0x03 +Transaction.SIGHASH_ANYONECANPAY = 0x80 +Transaction.ADVANCED_TRANSACTION_MARKER = 0x00 +Transaction.ADVANCED_TRANSACTION_FLAG = 0x01 + +var EMPTY_SCRIPT = Buffer.allocUnsafe(0) +var EMPTY_WITNESS = [] +var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') +var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex') +var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex') +var BLANK_OUTPUT = { + script: EMPTY_SCRIPT, + valueBuffer: VALUE_UINT64_MAX +} + +Transaction.fromBuffer = function (buffer, __noStrict) { + var offset = 0 + function readSlice (n) { + offset += n + return buffer.slice(offset - n, offset) + } + + function readUInt32 () { + var i = buffer.readUInt32LE(offset) + offset += 4 + return i + } + + function readInt32 () { + var i = buffer.readInt32LE(offset) + offset += 4 + return i + } + + function readUInt64 () { + var i = bufferutils.readUInt64LE(buffer, offset) + offset += 8 + return i + } + + function readVarInt () { + var vi = varuint.decode(buffer, offset) + offset += varuint.decode.bytes + return vi + } + + function readVarSlice () { + return readSlice(readVarInt()) + } + + function readVector () { + var count = readVarInt() + var vector = [] + for (var i = 0; i < count; i++) vector.push(readVarSlice()) + return vector + } + + var tx = new Transaction() + tx.version = readInt32() + + var marker = buffer.readUInt8(offset) + var flag = buffer.readUInt8(offset + 1) + + var hasWitnesses = false + if (marker === Transaction.ADVANCED_TRANSACTION_MARKER && + flag === Transaction.ADVANCED_TRANSACTION_FLAG) { + offset += 2 + hasWitnesses = true + } + + var vinLen = readVarInt() + for (var i = 0; i < vinLen; ++i) { + tx.ins.push({ + hash: readSlice(32), + index: readUInt32(), + script: readVarSlice(), + sequence: readUInt32(), + witness: EMPTY_WITNESS + }) + } + + var voutLen = readVarInt() + for (i = 0; i < voutLen; ++i) { + tx.outs.push({ + value: readUInt64(), + script: readVarSlice() + }) + } + + if (hasWitnesses) { + for (i = 0; i < vinLen; ++i) { + tx.ins[i].witness = readVector() + } + + // was this pointless? + if (!tx.hasWitnesses()) throw new Error('Transaction has superfluous witness data') + } + + tx.locktime = readUInt32() + + if (__noStrict) return tx + if (offset !== buffer.length) throw new Error('Transaction has unexpected data') + + return tx +} + +Transaction.fromHex = function (hex) { + return Transaction.fromBuffer(Buffer.from(hex, 'hex')) +} + +Transaction.isCoinbaseHash = function (buffer) { + typeforce(types.Hash256bit, buffer) + for (var i = 0; i < 32; ++i) { + if (buffer[i] !== 0) return false + } + return true +} + +Transaction.prototype.isCoinbase = function () { + return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash) +} + +Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) { + typeforce(types.tuple( + types.Hash256bit, + types.UInt32, + types.maybe(types.UInt32), + types.maybe(types.Buffer) + ), arguments) + + if (types.Null(sequence)) { + sequence = Transaction.DEFAULT_SEQUENCE + } + + // Add the input and return the input's index + return (this.ins.push({ + hash: hash, + index: index, + script: scriptSig || EMPTY_SCRIPT, + sequence: sequence, + witness: EMPTY_WITNESS + }) - 1) +} + +Transaction.prototype.addOutput = function (scriptPubKey, value) { + typeforce(types.tuple(types.Buffer, types.Satoshi), arguments) + + // Add the output and return the output's index + return (this.outs.push({ + script: scriptPubKey, + value: value + }) - 1) +} + +Transaction.prototype.hasWitnesses = function () { + return this.ins.some(function (x) { + return x.witness.length !== 0 + }) +} + +Transaction.prototype.weight = function () { + var base = this.__byteLength(false) + var total = this.__byteLength(true) + return base * 3 + total +} + +Transaction.prototype.virtualSize = function () { + return Math.ceil(this.weight() / 4) +} + +Transaction.prototype.byteLength = function () { + return this.__byteLength(true) +} + +Transaction.prototype.__byteLength = function (__allowWitness) { + var hasWitnesses = __allowWitness && this.hasWitnesses() + + return ( + (hasWitnesses ? 10 : 8) + + varuint.encodingLength(this.ins.length) + + varuint.encodingLength(this.outs.length) + + this.ins.reduce(function (sum, input) { return sum + 40 + varSliceSize(input.script) }, 0) + + this.outs.reduce(function (sum, output) { return sum + 8 + varSliceSize(output.script) }, 0) + + (hasWitnesses ? this.ins.reduce(function (sum, input) { return sum + vectorSize(input.witness) }, 0) : 0) + ) +} + +Transaction.prototype.clone = function () { + var newTx = new Transaction() + newTx.version = this.version + newTx.locktime = this.locktime + + newTx.ins = this.ins.map(function (txIn) { + return { + hash: txIn.hash, + index: txIn.index, + script: txIn.script, + sequence: txIn.sequence, + witness: txIn.witness + } + }) + + newTx.outs = this.outs.map(function (txOut) { + return { + script: txOut.script, + value: txOut.value + } + }) + + return newTx +} + +/** + * Hash transaction for signing a specific input. + * + * Bitcoin uses a different hash for each signed transaction input. + * This method copies the transaction, makes the necessary changes based on the + * hashType, and then hashes the result. + * This hash can then be used to sign the provided transaction input. + */ +Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) { + typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments) + + // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29 + if (inIndex >= this.ins.length) return ONE + + // ignore OP_CODESEPARATOR + var ourScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) { + return x !== opcodes.OP_CODESEPARATOR + })) + + var txTmp = this.clone() + + // SIGHASH_NONE: ignore all outputs? (wildcard payee) + if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) { + txTmp.outs = [] + + // ignore sequence numbers (except at inIndex) + txTmp.ins.forEach(function (input, i) { + if (i === inIndex) return + + input.sequence = 0 + }) + + // SIGHASH_SINGLE: ignore all outputs, except at the same index? + } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) { + // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60 + if (inIndex >= this.outs.length) return ONE + + // truncate outputs after + txTmp.outs.length = inIndex + 1 + + // "blank" outputs before + for (var i = 0; i < inIndex; i++) { + txTmp.outs[i] = BLANK_OUTPUT + } + + // ignore sequence numbers (except at inIndex) + txTmp.ins.forEach(function (input, y) { + if (y === inIndex) return + + input.sequence = 0 + }) + } + + // SIGHASH_ANYONECANPAY: ignore inputs entirely? + if (hashType & Transaction.SIGHASH_ANYONECANPAY) { + txTmp.ins = [txTmp.ins[inIndex]] + txTmp.ins[0].script = ourScript + + // SIGHASH_ALL: only ignore input scripts + } else { + // "blank" others input scripts + txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT }) + txTmp.ins[inIndex].script = ourScript + } + + // serialize and hash + var buffer = Buffer.allocUnsafe(txTmp.__byteLength(false) + 4) + buffer.writeInt32LE(hashType, buffer.length - 4) + txTmp.__toBuffer(buffer, 0, false) + + return bcrypto.hash256(buffer) +} + +Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, value, hashType) { + typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments) + + var tbuffer, toffset + function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) } + function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) } + function writeUInt64 (i) { toffset = bufferutils.writeUInt64LE(tbuffer, i, toffset) } + function writeVarInt (i) { + varuint.encode(i, tbuffer, toffset) + toffset += varuint.encode.bytes + } + function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } + + var hashOutputs = ZERO + var hashPrevouts = ZERO + var hashSequence = ZERO + + if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) { + tbuffer = Buffer.allocUnsafe(36 * this.ins.length) + toffset = 0 + + this.ins.forEach(function (txIn) { + writeSlice(txIn.hash) + writeUInt32(txIn.index) + }) + + hashPrevouts = bcrypto.hash256(tbuffer) + } + + if (!(hashType & Transaction.SIGHASH_ANYONECANPAY) && + (hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && + (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { + tbuffer = Buffer.allocUnsafe(4 * this.ins.length) + toffset = 0 + + this.ins.forEach(function (txIn) { + writeUInt32(txIn.sequence) + }) + + hashSequence = bcrypto.hash256(tbuffer) + } + + if ((hashType & 0x1f) !== Transaction.SIGHASH_SINGLE && + (hashType & 0x1f) !== Transaction.SIGHASH_NONE) { + var txOutsSize = this.outs.reduce(function (sum, output) { + return sum + 8 + varSliceSize(output.script) + }, 0) + + tbuffer = Buffer.allocUnsafe(txOutsSize) + toffset = 0 + + this.outs.forEach(function (out) { + writeUInt64(out.value) + writeVarSlice(out.script) + }) + + hashOutputs = bcrypto.hash256(tbuffer) + } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE && inIndex < this.outs.length) { + var output = this.outs[inIndex] + + tbuffer = Buffer.allocUnsafe(8 + varSliceSize(output.script)) + toffset = 0 + writeUInt64(output.value) + writeVarSlice(output.script) + + hashOutputs = bcrypto.hash256(tbuffer) + } + + tbuffer = Buffer.allocUnsafe(156 + varSliceSize(prevOutScript)) + toffset = 0 + + var input = this.ins[inIndex] + writeUInt32(this.version) + writeSlice(hashPrevouts) + writeSlice(hashSequence) + writeSlice(input.hash) + writeUInt32(input.index) + writeVarSlice(prevOutScript) + writeUInt64(value) + writeUInt32(input.sequence) + writeSlice(hashOutputs) + writeUInt32(this.locktime) + writeUInt32(hashType) + return bcrypto.hash256(tbuffer) +} + +Transaction.prototype.getHash = function () { + return bcrypto.hash256(this.__toBuffer(undefined, undefined, false)) +} + +Transaction.prototype.getId = function () { + // transaction hash's are displayed in reverse order + return this.getHash().reverse().toString('hex') +} + +Transaction.prototype.toBuffer = function (buffer, initialOffset) { + return this.__toBuffer(buffer, initialOffset, true) +} + +Transaction.prototype.__toBuffer = function (buffer, initialOffset, __allowWitness) { + if (!buffer) buffer = Buffer.allocUnsafe(this.__byteLength(__allowWitness)) + + var offset = initialOffset || 0 + function writeSlice (slice) { offset += slice.copy(buffer, offset) } + function writeUInt8 (i) { offset = buffer.writeUInt8(i, offset) } + function writeUInt32 (i) { offset = buffer.writeUInt32LE(i, offset) } + function writeInt32 (i) { offset = buffer.writeInt32LE(i, offset) } + function writeUInt64 (i) { offset = bufferutils.writeUInt64LE(buffer, i, offset) } + function writeVarInt (i) { + varuint.encode(i, buffer, offset) + offset += varuint.encode.bytes + } + function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) } + function writeVector (vector) { writeVarInt(vector.length); vector.forEach(writeVarSlice) } + + writeInt32(this.version) + + var hasWitnesses = __allowWitness && this.hasWitnesses() + + if (hasWitnesses) { + writeUInt8(Transaction.ADVANCED_TRANSACTION_MARKER) + writeUInt8(Transaction.ADVANCED_TRANSACTION_FLAG) + } + + writeVarInt(this.ins.length) + + this.ins.forEach(function (txIn) { + writeSlice(txIn.hash) + writeUInt32(txIn.index) + writeVarSlice(txIn.script) + writeUInt32(txIn.sequence) + }) + + writeVarInt(this.outs.length) + this.outs.forEach(function (txOut) { + if (!txOut.valueBuffer) { + writeUInt64(txOut.value) + } else { + writeSlice(txOut.valueBuffer) + } + + writeVarSlice(txOut.script) + }) + + if (hasWitnesses) { + this.ins.forEach(function (input) { + writeVector(input.witness) + }) + } + + writeUInt32(this.locktime) + + // avoid slicing unless necessary + if (initialOffset !== undefined) return buffer.slice(initialOffset, offset) + return buffer +} + +Transaction.prototype.toHex = function () { + return this.toBuffer().toString('hex') +} + +Transaction.prototype.setInputScript = function (index, scriptSig) { + typeforce(types.tuple(types.Number, types.Buffer), arguments) + + this.ins[index].script = scriptSig +} + +Transaction.prototype.setWitness = function (index, witness) { + typeforce(types.tuple(types.Number, [types.Buffer]), arguments) + + this.ins[index].witness = witness +} + +module.exports = Transaction + +},{"./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') +var bscript = require('./script') +var btemplates = require('./templates') +var networks = require('./networks') +var ops = require('bitcoin-ops') +var typeforce = require('typeforce') +var types = require('./types') +var scriptTypes = btemplates.types +var SIGNABLE = [btemplates.types.P2PKH, btemplates.types.P2PK, btemplates.types.MULTISIG] +var P2SH = SIGNABLE.concat([btemplates.types.P2WPKH, btemplates.types.P2WSH]) + +var ECPair = require('./ecpair') +var ECSignature = require('./ecsignature') +var Transaction = require('./transaction') + +function supportedType (type) { + return SIGNABLE.indexOf(type) !== -1 +} + +function supportedP2SHType (type) { + return P2SH.indexOf(type) !== -1 +} + +function extractChunks (type, chunks, script) { + var pubKeys = [] + var signatures = [] + switch (type) { + case scriptTypes.P2PKH: + // if (redeemScript) throw new Error('Nonstandard... P2SH(P2PKH)') + pubKeys = chunks.slice(1) + signatures = chunks.slice(0, 1) + break + + case scriptTypes.P2PK: + pubKeys[0] = script ? btemplates.pubKey.output.decode(script) : undefined + signatures = chunks.slice(0, 1) + break + + case scriptTypes.MULTISIG: + if (script) { + var multisig = btemplates.multisig.output.decode(script) + pubKeys = multisig.pubKeys + } + + signatures = chunks.slice(1).map(function (chunk) { + return chunk.length === 0 ? undefined : chunk + }) + break + } + + return { + pubKeys: pubKeys, + signatures: signatures + } +} +function expandInput (scriptSig, witnessStack) { + if (scriptSig.length === 0 && witnessStack.length === 0) return {} + + var prevOutScript + var prevOutType + var scriptType + var script + var redeemScript + var witnessScript + var witnessScriptType + var redeemScriptType + var witness = false + var p2wsh = false + var p2sh = false + var witnessProgram + var chunks + + var scriptSigChunks = bscript.decompile(scriptSig) + var sigType = btemplates.classifyInput(scriptSigChunks, true) + if (sigType === scriptTypes.P2SH) { + p2sh = true + redeemScript = scriptSigChunks[scriptSigChunks.length - 1] + redeemScriptType = btemplates.classifyOutput(redeemScript) + prevOutScript = btemplates.scriptHash.output.encode(bcrypto.hash160(redeemScript)) + prevOutType = scriptTypes.P2SH + script = redeemScript + } + + var classifyWitness = btemplates.classifyWitness(witnessStack, true) + if (classifyWitness === scriptTypes.P2WSH) { + witnessScript = witnessStack[witnessStack.length - 1] + witnessScriptType = btemplates.classifyOutput(witnessScript) + p2wsh = true + witness = true + if (scriptSig.length === 0) { + prevOutScript = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) + prevOutType = scriptTypes.P2WSH + if (redeemScript !== undefined) { + throw new Error('Redeem script given when unnecessary') + } + // bare witness + } else { + if (!redeemScript) { + throw new Error('No redeemScript provided for P2WSH, but scriptSig non-empty') + } + witnessProgram = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript)) + if (!redeemScript.equals(witnessProgram)) { + throw new Error('Redeem script didn\'t match witnessScript') + } + } + + if (!supportedType(btemplates.classifyOutput(witnessScript))) { + throw new Error('unsupported witness script') + } + + script = witnessScript + scriptType = witnessScriptType + chunks = witnessStack.slice(0, -1) + } else if (classifyWitness === scriptTypes.P2WPKH) { + witness = true + var key = witnessStack[witnessStack.length - 1] + var keyHash = bcrypto.hash160(key) + if (scriptSig.length === 0) { + prevOutScript = btemplates.witnessPubKeyHash.output.encode(keyHash) + prevOutType = scriptTypes.P2WPKH + if (typeof redeemScript !== 'undefined') { + throw new Error('Redeem script given when unnecessary') + } + } else { + if (!redeemScript) { + throw new Error('No redeemScript provided for P2WPKH, but scriptSig wasn\'t empty') + } + witnessProgram = btemplates.witnessPubKeyHash.output.encode(keyHash) + if (!redeemScript.equals(witnessProgram)) { + throw new Error('Redeem script did not have the right witness program') + } + } + + scriptType = scriptTypes.P2PKH + chunks = witnessStack + } else if (redeemScript) { + if (!supportedP2SHType(redeemScriptType)) { + throw new Error('Bad redeemscript!') + } + + script = redeemScript + scriptType = redeemScriptType + chunks = scriptSigChunks.slice(0, -1) + } else { + prevOutType = scriptType = btemplates.classifyInput(scriptSig) + chunks = scriptSigChunks + } + + var expanded = extractChunks(scriptType, chunks, script) + + var result = { + pubKeys: expanded.pubKeys, + signatures: expanded.signatures, + prevOutScript: prevOutScript, + prevOutType: prevOutType, + signType: scriptType, + signScript: script, + witness: Boolean(witness) + } + + if (p2sh) { + result.redeemScript = redeemScript + result.redeemScriptType = redeemScriptType + } + + if (p2wsh) { + result.witnessScript = witnessScript + result.witnessScriptType = witnessScriptType + } + + return result +} + +// could be done in expandInput, but requires the original Transaction for hashForSignature +function fixMultisigOrder (input, transaction, vin) { + if (input.redeemScriptType !== scriptTypes.MULTISIG || !input.redeemScript) return + if (input.pubKeys.length === input.signatures.length) return + + var unmatched = input.signatures.concat() + + input.signatures = input.pubKeys.map(function (pubKey) { + var keyPair = ECPair.fromPublicKeyBuffer(pubKey) + var match + + // check for a signature + unmatched.some(function (signature, i) { + // skip if undefined || OP_0 + if (!signature) return false + + // TODO: avoid O(n) hashForSignature + var parsed = ECSignature.parseScriptSignature(signature) + var hash = transaction.hashForSignature(vin, input.redeemScript, parsed.hashType) + + // skip if signature does not match pubKey + if (!keyPair.verify(hash, parsed.signature)) return false + + // remove matched signature from unmatched + unmatched[i] = undefined + match = signature + + return true + }) + + return match + }) +} + +function expandOutput (script, scriptType, ourPubKey) { + typeforce(types.Buffer, script) + + var scriptChunks = bscript.decompile(script) + if (!scriptType) { + scriptType = btemplates.classifyOutput(script) + } + + var pubKeys = [] + + switch (scriptType) { + // does our hash160(pubKey) match the output scripts? + case scriptTypes.P2PKH: + if (!ourPubKey) break + + var pkh1 = scriptChunks[2] + var pkh2 = bcrypto.hash160(ourPubKey) + if (pkh1.equals(pkh2)) pubKeys = [ourPubKey] + break + + // does our hash160(pubKey) match the output scripts? + case scriptTypes.P2WPKH: + if (!ourPubKey) break + + var wpkh1 = scriptChunks[1] + var wpkh2 = bcrypto.hash160(ourPubKey) + if (wpkh1.equals(wpkh2)) pubKeys = [ourPubKey] + break + + case scriptTypes.P2PK: + pubKeys = scriptChunks.slice(0, 1) + break + + case scriptTypes.MULTISIG: + pubKeys = scriptChunks.slice(1, -2) + break + + default: return { scriptType: scriptType } + } + + return { + pubKeys: pubKeys, + scriptType: scriptType, + signatures: pubKeys.map(function () { return undefined }) + } +} + +function checkP2SHInput (input, redeemScriptHash) { + if (input.prevOutType) { + if (input.prevOutType !== scriptTypes.P2SH) throw new Error('PrevOutScript must be P2SH') + + var prevOutScriptScriptHash = bscript.decompile(input.prevOutScript)[1] + if (!prevOutScriptScriptHash.equals(redeemScriptHash)) throw new Error('Inconsistent hash160(RedeemScript)') + } +} + +function checkP2WSHInput (input, witnessScriptHash) { + if (input.prevOutType) { + if (input.prevOutType !== scriptTypes.P2WSH) throw new Error('PrevOutScript must be P2WSH') + + var scriptHash = bscript.decompile(input.prevOutScript)[1] + if (!scriptHash.equals(witnessScriptHash)) throw new Error('Inconsistent sha25(WitnessScript)') + } +} + +function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScript) { + var expanded + var prevOutType + var prevOutScript + + var p2sh = false + var p2shType + var redeemScriptHash + + var witness = false + var p2wsh = false + var witnessType + var witnessScriptHash + + var signType + var signScript + + if (redeemScript && witnessScript) { + redeemScriptHash = bcrypto.hash160(redeemScript) + witnessScriptHash = bcrypto.sha256(witnessScript) + checkP2SHInput(input, redeemScriptHash) + + if (!redeemScript.equals(btemplates.witnessScriptHash.output.encode(witnessScriptHash))) throw new Error('Witness script inconsistent with redeem script') + + expanded = expandOutput(witnessScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2SH + prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) + p2sh = witness = p2wsh = true + p2shType = btemplates.types.P2WSH + signType = witnessType = expanded.scriptType + signScript = witnessScript + } else if (redeemScript) { + redeemScriptHash = bcrypto.hash160(redeemScript) + checkP2SHInput(input, redeemScriptHash) + + expanded = expandOutput(redeemScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('RedeemScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2SH + prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash) + p2sh = true + signType = p2shType = expanded.scriptType + signScript = redeemScript + witness = signType === btemplates.types.P2WPKH + } else if (witnessScript) { + witnessScriptHash = bcrypto.sha256(witnessScript) + checkP2WSHInput(input, witnessScriptHash) + + expanded = expandOutput(witnessScript, undefined, kpPubKey) + if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"') + + prevOutType = btemplates.types.P2WSH + prevOutScript = btemplates.witnessScriptHash.output.encode(witnessScriptHash) + witness = p2wsh = true + signType = witnessType = expanded.scriptType + signScript = witnessScript + } else if (input.prevOutType) { + // embedded scripts are not possible without a redeemScript + if (input.prevOutType === scriptTypes.P2SH || + input.prevOutType === scriptTypes.P2WSH) { + throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript') + } + + prevOutType = input.prevOutType + prevOutScript = input.prevOutScript + expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey) + if (!expanded.pubKeys) return + + witness = (input.prevOutType === scriptTypes.P2WPKH) + signType = prevOutType + signScript = prevOutScript + } else { + prevOutScript = btemplates.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey)) + expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey) + + prevOutType = scriptTypes.P2PKH + witness = false + signType = prevOutType + signScript = prevOutScript + } + + if (signType === scriptTypes.P2WPKH) { + signScript = btemplates.pubKeyHash.output.encode(btemplates.witnessPubKeyHash.output.decode(signScript)) + } + + if (p2sh) { + input.redeemScript = redeemScript + input.redeemScriptType = p2shType + } + + if (p2wsh) { + input.witnessScript = witnessScript + input.witnessScriptType = witnessType + } + + input.pubKeys = expanded.pubKeys + input.signatures = expanded.signatures + input.signScript = signScript + input.signType = signType + input.prevOutScript = prevOutScript + input.prevOutType = prevOutType + input.witness = witness +} + +function buildStack (type, signatures, pubKeys, allowIncomplete) { + if (type === scriptTypes.P2PKH) { + if (signatures.length === 1 && Buffer.isBuffer(signatures[0]) && pubKeys.length === 1) return btemplates.pubKeyHash.input.encodeStack(signatures[0], pubKeys[0]) + } else if (type === scriptTypes.P2PK) { + if (signatures.length === 1 && Buffer.isBuffer(signatures[0])) return btemplates.pubKey.input.encodeStack(signatures[0]) + } else if (type === scriptTypes.MULTISIG) { + if (signatures.length > 0) { + signatures = signatures.map(function (signature) { + return signature || ops.OP_0 + }) + if (!allowIncomplete) { + // remove blank signatures + signatures = signatures.filter(function (x) { return x !== ops.OP_0 }) + } + + return btemplates.multisig.input.encodeStack(signatures) + } + } else { + throw new Error('Not yet supported') + } + + if (!allowIncomplete) throw new Error('Not enough signatures provided') + return [] +} + +function buildInput (input, allowIncomplete) { + var scriptType = input.prevOutType + var sig = [] + var witness = [] + + if (supportedType(scriptType)) { + sig = buildStack(scriptType, input.signatures, input.pubKeys, allowIncomplete) + } + + var p2sh = false + if (scriptType === btemplates.types.P2SH) { + // We can remove this error later when we have a guarantee prepareInput + // rejects unsignable scripts - it MUST be signable at this point. + if (!allowIncomplete && !supportedP2SHType(input.redeemScriptType)) { + throw new Error('Impossible to sign this type') + } + + if (supportedType(input.redeemScriptType)) { + sig = buildStack(input.redeemScriptType, input.signatures, input.pubKeys, allowIncomplete) + } + + // If it wasn't SIGNABLE, it's witness, defer to that + if (input.redeemScriptType) { + p2sh = true + scriptType = input.redeemScriptType + } + } + + switch (scriptType) { + // P2WPKH is a special case of P2PKH + case btemplates.types.P2WPKH: + witness = buildStack(btemplates.types.P2PKH, input.signatures, input.pubKeys, allowIncomplete) + break + + case btemplates.types.P2WSH: + // We can remove this check later + if (!allowIncomplete && !supportedType(input.witnessScriptType)) { + throw new Error('Impossible to sign this type') + } + + if (supportedType(input.witnessScriptType)) { + witness = buildStack(input.witnessScriptType, input.signatures, input.pubKeys, allowIncomplete) + witness.push(input.witnessScript) + scriptType = input.witnessScriptType + } + + break + } + + // append redeemScript if necessary + if (p2sh) { + sig.push(input.redeemScript) + } + + return { + type: scriptType, + script: bscript.compile(sig), + witness: witness + } +} + +function TransactionBuilder (network, maximumFeeRate) { + this.prevTxMap = {} + 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 || 2500 + + this.inputs = [] + this.tx = new Transaction() +} + +TransactionBuilder.prototype.setLockTime = function (locktime) { + typeforce(types.UInt32, locktime) + + // if any signatures exist, throw + if (this.inputs.some(function (input) { + if (!input.signatures) return false + + return input.signatures.some(function (s) { return s }) + })) { + throw new Error('No, this would invalidate signatures') + } + + this.tx.locktime = locktime +} + +TransactionBuilder.prototype.setVersion = function (version) { + typeforce(types.UInt32, version) + + // XXX: this might eventually become more complex depending on what the versions represent + this.tx.version = version +} + +TransactionBuilder.fromTransaction = function (transaction, network) { + var txb = new TransactionBuilder(network) + + // Copy transaction fields + txb.setVersion(transaction.version) + txb.setLockTime(transaction.locktime) + + // Copy outputs (done first to avoid signature invalidation) + transaction.outs.forEach(function (txOut) { + txb.addOutput(txOut.script, txOut.value) + }) + + // Copy inputs + transaction.ins.forEach(function (txIn) { + txb.__addInputUnsafe(txIn.hash, txIn.index, { + sequence: txIn.sequence, + script: txIn.script, + witness: txIn.witness + }) + }) + + // fix some things not possible through the public API + txb.inputs.forEach(function (input, i) { + fixMultisigOrder(input, transaction, i) + }) + + return txb +} + +TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) { + if (!this.__canModifyInputs()) { + throw new Error('No, this would invalidate signatures') + } + + var value + + // is it a hex string? + if (typeof txHash === 'string') { + // transaction hashs's are displayed in reverse order, un-reverse it + txHash = Buffer.from(txHash, 'hex').reverse() + + // is it a Transaction object? + } else if (txHash instanceof Transaction) { + var txOut = txHash.outs[vout] + prevOutScript = txOut.script + value = txOut.value + + txHash = txHash.getHash() + } + + return this.__addInputUnsafe(txHash, vout, { + sequence: sequence, + prevOutScript: prevOutScript, + value: value + }) +} + +TransactionBuilder.prototype.__addInputUnsafe = function (txHash, vout, options) { + if (Transaction.isCoinbaseHash(txHash)) { + throw new Error('coinbase inputs not supported') + } + + var prevTxOut = txHash.toString('hex') + ':' + vout + if (this.prevTxMap[prevTxOut] !== undefined) throw new Error('Duplicate TxOut: ' + prevTxOut) + + var input = {} + + // derive what we can from the scriptSig + if (options.script !== undefined) { + input = expandInput(options.script, options.witness || []) + } + + // if an input value was given, retain it + if (options.value !== undefined) { + input.value = options.value + } + + // derive what we can from the previous transactions output script + if (!input.prevOutScript && options.prevOutScript) { + var prevOutType + + if (!input.pubKeys && !input.signatures) { + var expanded = expandOutput(options.prevOutScript) + + if (expanded.pubKeys) { + input.pubKeys = expanded.pubKeys + input.signatures = expanded.signatures + } + + prevOutType = expanded.scriptType + } + + input.prevOutScript = options.prevOutScript + input.prevOutType = prevOutType || btemplates.classifyOutput(options.prevOutScript) + } + + var vin = this.tx.addInput(txHash, vout, options.sequence, options.scriptSig) + this.inputs[vin] = input + this.prevTxMap[prevTxOut] = vin + return vin +} + +TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) { + if (!this.__canModifyOutputs()) { + throw new Error('No, this would invalidate signatures') + } + + // Attempt to get a script if it's a base58 address string + if (typeof scriptPubKey === 'string') { + scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network) + } + + return this.tx.addOutput(scriptPubKey, value) +} + +TransactionBuilder.prototype.build = function () { + return this.__build(false) +} +TransactionBuilder.prototype.buildIncomplete = function () { + return this.__build(true) +} + +TransactionBuilder.prototype.__build = function (allowIncomplete) { + if (!allowIncomplete) { + if (!this.tx.ins.length) throw new Error('Transaction has no inputs') + if (!this.tx.outs.length) throw new Error('Transaction has no outputs') + } + + var tx = this.tx.clone() + // Create script signatures from inputs + this.inputs.forEach(function (input, i) { + var scriptType = input.witnessScriptType || input.redeemScriptType || input.prevOutType + if (!scriptType && !allowIncomplete) throw new Error('Transaction is not complete') + var result = buildInput(input, allowIncomplete) + + // skip if no result + if (!allowIncomplete) { + if (!supportedType(result.type) && result.type !== btemplates.types.P2WPKH) { + throw new Error(result.type + ' not supported') + } + } + + tx.setInputScript(i, result.script) + tx.setWitness(i, result.witness) + }) + + if (!allowIncomplete) { + // do not rely on this, its merely a last resort + if (this.__overMaximumFees(tx.virtualSize())) { + throw new Error('Transaction has absurd fees') + } + } + + return tx +} + +function canSign (input) { + return input.prevOutScript !== undefined && + input.signScript !== undefined && + input.pubKeys !== undefined && + input.signatures !== undefined && + input.signatures.length === input.pubKeys.length && + input.pubKeys.length > 0 && + ( + input.witness === false || + (input.witness === true && input.value !== undefined) + ) +} + +TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashType, witnessValue, witnessScript) { + // TODO: remove keyPair.network matching in 4.0.0 + if (keyPair.network && keyPair.network !== this.network) throw new TypeError('Inconsistent network') + if (!this.inputs[vin]) throw new Error('No input at index: ' + vin) + hashType = hashType || Transaction.SIGHASH_ALL + + var input = this.inputs[vin] + + // if redeemScript was previously provided, enforce consistency + if (input.redeemScript !== undefined && + redeemScript && + !input.redeemScript.equals(redeemScript)) { + throw new Error('Inconsistent redeemScript') + } + + var kpPubKey = keyPair.publicKey || keyPair.getPublicKeyBuffer() + if (!canSign(input)) { + if (witnessValue !== undefined) { + if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue') + typeforce(types.Satoshi, witnessValue) + input.value = witnessValue + } + + if (!canSign(input)) prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript) + if (!canSign(input)) throw Error(input.prevOutType + ' not supported') + } + + // ready to sign + var signatureHash + if (input.witness) { + signatureHash = this.tx.hashForWitnessV0(vin, input.signScript, input.value, hashType) + } else { + signatureHash = this.tx.hashForSignature(vin, input.signScript, hashType) + } + + // enforce in order signing of public keys + var signed = input.pubKeys.some(function (pubKey, i) { + if (!kpPubKey.equals(pubKey)) return false + if (input.signatures[i]) throw new Error('Signature already exists') + if (kpPubKey.length !== 33 && + input.signType === scriptTypes.P2WPKH) throw new Error('BIP143 rejects uncompressed public keys in P2WPKH or P2WSH') + + var signature = keyPair.sign(signatureHash) + if (Buffer.isBuffer(signature)) signature = ECSignature.fromRSBuffer(signature) + + input.signatures[i] = signature.toScriptSignature(hashType) + return true + }) + + if (!signed) throw new Error('Key pair cannot sign for this input') +} + +function signatureHashType (buffer) { + return buffer.readUInt8(buffer.length - 1) +} + +TransactionBuilder.prototype.__canModifyInputs = function () { + return this.inputs.every(function (input) { + // any signatures? + if (input.signatures === undefined) return true + + return input.signatures.every(function (signature) { + if (!signature) return true + var hashType = signatureHashType(signature) + + // if SIGHASH_ANYONECANPAY is set, signatures would not + // be invalidated by more inputs + return hashType & Transaction.SIGHASH_ANYONECANPAY + }) + }) +} + +TransactionBuilder.prototype.__canModifyOutputs = function () { + var nInputs = this.tx.ins.length + var nOutputs = this.tx.outs.length + + return this.inputs.every(function (input) { + if (input.signatures === undefined) return true + + return input.signatures.every(function (signature) { + if (!signature) return true + var hashType = signatureHashType(signature) + + var hashTypeMod = hashType & 0x1f + if (hashTypeMod === Transaction.SIGHASH_NONE) return true + if (hashTypeMod === Transaction.SIGHASH_SINGLE) { + // if SIGHASH_SINGLE is set, and nInputs > nOutputs + // some signatures would be invalidated by the addition + // of more outputs + return nInputs <= nOutputs + } + }) + }) +} + +TransactionBuilder.prototype.__overMaximumFees = function (bytes) { + // not all inputs will have .value defined + var incoming = this.inputs.reduce(function (a, x) { return a + (x.value >>> 0) }, 0) + + // but all outputs do, and if we have any input value + // we can immediately determine if the outputs are too small + var outgoing = this.tx.outs.reduce(function (a, x) { return a + x.value }, 0) + var fee = incoming - outgoing + var feeRate = fee / bytes + + return feeRate > this.maximumFeeRate +} + +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":101,"typeforce":112}],80:[function(require,module,exports){ +var typeforce = require('typeforce') + +var UINT31_MAX = Math.pow(2, 31) - 1 +function UInt31 (value) { + return typeforce.UInt32(value) && value <= UINT31_MAX +} + +function BIP32Path (value) { + return typeforce.String(value) && value.match(/^(m\/)?(\d+'?\/)*\d+'?$/) +} +BIP32Path.toJSON = function () { return 'BIP32 derivation path' } + +var SATOSHI_MAX = 21 * 1e14 +function Satoshi (value) { + return typeforce.UInt53(value) && value <= SATOSHI_MAX +} + +// external dependent types +var BigInt = typeforce.quacksLike('BigInteger') +var ECPoint = typeforce.quacksLike('Point') + +// exposed, external API +var ECSignature = typeforce.compile({ r: BigInt, s: BigInt }) +var Network = typeforce.compile({ + messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String), + bip32: { + public: typeforce.UInt32, + private: typeforce.UInt32 + }, + pubKeyHash: typeforce.UInt8, + scriptHash: typeforce.UInt8, + wif: typeforce.UInt8 +}) + +// extend typeforce types with ours +var types = { + BigInt: BigInt, + BIP32Path: BIP32Path, + Buffer256bit: typeforce.BufferN(32), + ECPoint: ECPoint, + ECSignature: ECSignature, + Hash160bit: typeforce.BufferN(20), + Hash256bit: typeforce.BufferN(32), + Network: Network, + Satoshi: Satoshi, + UInt31: UInt31 +} + +for (var typeName in typeforce) { + types[typeName] = typeforce[typeName] +} + +module.exports = types + +},{"typeforce":112}],81:[function(require,module,exports){ +var basex = require('base-x') +var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' + +module.exports = basex(ALPHABET) + +},{"base-x":35}],82:[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":81,"safe-buffer":101}],83:[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":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') + +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":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') + +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":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) + +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":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. + */ + +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) + } + + 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) +} + +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":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') + +var sha = require('sha.js') + +var ZEROS = Buffer.alloc(128) + +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } + + var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 + + 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) + } + + 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 + } + this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) + this._hash.update(ipad) +} + +inherits(Hmac, Base) + +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) +} + +},{"./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 Base = require('cipher-base') + +var ZEROS = Buffer.alloc(128) +var blocksize = 64 + +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } + + this._alg = alg + this._key = key + + if (key.length > blocksize) { + key = alg(key) + } else if (key.length < blocksize) { + key = Buffer.concat([key, ZEROS], blocksize) + } + + 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 + } + + this._hash = [ipad] +} + +inherits(Hmac, Base) + +Hmac.prototype._update = function (data) { + this._hash.push(data) +} + +Hmac.prototype._final = function () { + var h = this._alg(Buffer.concat(this._hash)) + return this._alg(Buffer.concat([this._opad, h])) +} +module.exports = Hmac + +},{"cipher-base":84,"inherits":96,"safe-buffer":101}],90:[function(require,module,exports){ +var assert = require('assert') +var BigInteger = require('bigi') + +var Point = require('./point') + +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 + + this.infinity = new Point(this, null, null, BigInteger.ZERO) + + // result caching + this.pOverFour = p.add(BigInteger.ONE).shiftRight(2) + + // determine size of p in bytes + this.pLength = Math.floor((this.p.bitLength() + 7) / 8) +} + +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 + + var y = beta + if (beta.isEven() ^ !isOdd) { + y = this.p.subtract(y) // -y % p + } + + return Point.fromAffine(this, x, y) +} + +Curve.prototype.isInfinity = function (Q) { + if (Q === this.infinity) return true + + return Q.z.signum() === 0 && Q.y.signum() !== 0 +} + +Curve.prototype.isOnCurve = function (Q) { + if (this.isInfinity(Q)) return true + + var x = Q.affineX + var y = Q.affineY + var a = this.a + var b = this.b + var p = this.p + + // 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 + + // 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) +} + +/** + * 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') + + // 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') + + return true +} + +module.exports = Curve + +},{"./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" + } +} + +},{}],92:[function(require,module,exports){ +var Point = require('./point') +var Curve = require('./curve') + +var getCurveByName = require('./names') + +module.exports = { + Curve: Curve, + Point: Point, + getCurveByName: getCurveByName +} + +},{"./curve":90,"./names":93,"./point":94}],93:[function(require,module,exports){ +var BigInteger = require('bigi') + +var curves = require('./curves.json') +var Curve = require('./curve') + +function getCurveByName (name) { + var curve = curves[name] + if (!curve) return null + + 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) + + return new Curve(p, a, b, Gx, Gy, n, h) +} + +module.exports = getCurveByName + +},{"./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') + +var THREE = BigInteger.valueOf(3) + +function Point (curve, x, y, z) { + assert.notStrictEqual(z, undefined, 'Missing Z coordinate') + + this.curve = curve + this.x = x + this.y = y + this.z = z + this._zInv = null + + this.compressed = true +} + +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) + } +}) + +Point.fromAffine = function (curve, x, y) { + return new Point(curve, x, y, BigInteger.ONE) +} + +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) + + // u = Y2 * Z1 - Y1 * Z2 + var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p) + + if (u.signum() !== 0) return false + + // v = X2 * Z1 - X1 * Z2 + var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p) + + return v.signum() === 0 +} + +Point.prototype.negate = function () { + var y = this.curve.p.subtract(this.y) + + return new Point(this.curve, this.x, y, this.z) +} + +Point.prototype.add = function (b) { + if (this.curve.isInfinity(this)) return b + if (this.curve.isInfinity(b)) return this + + var x1 = this.x + var y1 = this.y + var x2 = b.x + var y2 = b.y + + // 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) + + if (v.signum() === 0) { + if (u.signum() === 0) { + return this.twice() // this == b, so double + } + + return this.curve.infinity // this = -b, so infinity + } + + 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 Point(this.curve, x3, y3, z3) +} + +Point.prototype.twice = function () { + if (this.curve.isInfinity(this)) return this + if (this.y.signum() === 0) return this.curve.infinity + + var x1 = this.x + var y1 = this.y + + var y1z1 = y1.multiply(this.z).mod(this.curve.p) + var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p) + var a = this.curve.a + + // w = 3 * x1^2 + a * z1^2 + var w = x1.square().multiply(THREE) + + if (a.signum() !== 0) { + w = w.add(this.z.square().multiply(a)) + } + + 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) +} + +// 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) + } + } else if (kBit) { + R = R.add(x) + } + --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) + } + + length = j + } + + return results[0] +} + +}).call(this,require("buffer").Buffer) +},{"buffer":5}],98:[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}],99:[function(require,module,exports){ +(function (process,global){ +'use strict' + +function oldBrowser () { + throw new Error('Secure random number generation is 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":101}],100:[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":95,"inherits":96}],101:[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}],102:[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) >>> 0 + 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":101}],103:[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":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. + */ + +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":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. + */ + +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":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 + * + */ + +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":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 + * + */ + +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":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 + +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":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 + +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":102,"inherits":96,"safe-buffer":101}],110:[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":113}],111:[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":110,"./native":113}],112:[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":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 } +} + +// TODO: deprecate +types.Null = types.Nil + +for (var typeName in types) { + types[typeName].toJSON = function (t) { + return t + }.bind(null, typeName) +} + +module.exports = types + +},{}],114:[function(require,module,exports){ +'use strict' +var Buffer = require('safe-buffer').Buffer + +// 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 = Buffer.allocUnsafe(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 } + +},{"safe-buffer":101}],115:[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":83,"buffer":5}]},{},[34])(34) +}); \ No newline at end of file -- cgit v1.2.3