var idx = parseInt(b.substring(i * 11, (i + 1) * 11), 2);
result.push(wordlist[idx]);
}
- return result.join(' ');
+ return self.joinWords(result);
}
self.check = function(mnemonic) {
- var mnemonic = mnemonic.split(' ')
- if (mnemonic.length % 3 > 0) {
- return false
+ var b = mnemonicToBinaryString(mnemonic);
+ if (b === null) {
+ return false;
}
- // idx = map(lambda x: bin(self.wordlist.index(x))[2:].zfill(11), mnemonic)
- var idx = [];
- for (var i=0; i<mnemonic.length; i++) {
- var word = mnemonic[i];
- var wordIndex = wordlist.indexOf(word);
- if (wordIndex == -1) {
- return false;
- }
- var binaryIndex = zfill(wordIndex.toString(2), 11);
- idx.push(binaryIndex);
- }
- var b = idx.join('');
var l = b.length;
//d = b[:l / 33 * 32]
//h = b[-l / 33:]
return h == nh;
}
+ self.toRawEntropyHex = function(mnemonic) {
+ var b = mnemonicToBinaryString(mnemonic);
+ if (b === null)
+ return null;
+ var d = b.substring(0, b.length / 33 * 32);
+ var nd = binaryStringToWordArray(d);
+
+ var h = "";
+ for (var i=0; i<nd.length; i++) {
+ h += ('0000000' + nd[i].toString(16)).slice(-8);
+ }
+ return h;
+ }
+
+ self.toRawEntropyBin = function(mnemonic) {
+ var b = mnemonicToBinaryString(mnemonic);
+ var d = b.substring(0, b.length / 33 * 32);
+ return d;
+ }
+
self.toSeed = function(mnemonic, passphrase) {
passphrase = passphrase || '';
- mnemonic = self.normalizeString(mnemonic).split(' ').filter(function(x) { return x.length; }).join(' ');
+ mnemonic = self.joinWords(self.splitWords(mnemonic)); // removes duplicate blanks
+ var mnemonicNormalized = self.normalizeString(mnemonic);
passphrase = self.normalizeString(passphrase)
passphrase = "mnemonic" + passphrase;
- var mnemonicBits = sjcl.codec.utf8String.toBits(mnemonic);
+ var mnemonicBits = sjcl.codec.utf8String.toBits(mnemonicNormalized);
var passphraseBits = sjcl.codec.utf8String.toBits(passphrase);
var result = sjcl.misc.pbkdf2(mnemonicBits, passphraseBits, PBKDF2_ROUNDS, 512, hmacSHA512);
var hashHex = sjcl.codec.hex.fromBits(result);
return hashHex;
}
- self.normalizeString = function(str) {
- if (typeof str.normalize == "function") {
- return str.normalize("NFKD");
- }
- else {
- // TODO decide how to handle this in the future.
- // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize
- return str;
+ self.splitWords = function(mnemonic) {
+ return mnemonic.split(/\s/g).filter(function(x) { return x.length; });
+ }
+
+ self.joinWords = function(words) {
+ // Set space correctly depending on the language
+ // see https://github.com/bitcoin/bips/blob/master/bip-0039/bip-0039-wordlists.md#japanese
+ var space = " ";
+ if (language == "japanese") {
+ space = "\u3000"; // ideographic space
}
+ return words.join(space);
+ }
+
+ self.normalizeString = function(str) {
+ return str.normalize("NFKD");
}
function byteArrayToWordArray(data) {
return a;
}
+ function mnemonicToBinaryString(mnemonic) {
+ var mnemonic = self.splitWords(mnemonic);
+ if (mnemonic.length == 0 || mnemonic.length % 3 > 0) {
+ return null;
+ }
+ // idx = map(lambda x: bin(self.wordlist.index(x))[2:].zfill(11), mnemonic)
+ var idx = [];
+ for (var i=0; i<mnemonic.length; i++) {
+ var word = mnemonic[i];
+ var wordIndex = wordlist.indexOf(word);
+ if (wordIndex == -1) {
+ return null;
+ }
+ var binaryIndex = zfill(wordIndex.toString(2), 11);
+ idx.push(binaryIndex);
+ }
+ return idx.join('');
+ }
+
// Pad a numeric string on the left with zero digits until the given width
// is reached.
// Note this differs to the python implementation because it does not