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Merge pull request #271 from cernekee/local

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Allow converting mnemonic back to raw entropy value
This commit is contained in:
iancoleman
2019-11-11 09:21:07 +11:00
committed by GitHub
parent 342ff964aa 611f76238d
commit 3dbf117928
2 changed files with 44 additions and 16 deletions
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9
src/js/index.js
View File

@@ -232,7 +232,14 @@
if (phraseChangeTimeoutEvent != null) {
clearTimeout(phraseChangeTimeoutEvent);
}
phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400);
phraseChangeTimeoutEvent = setTimeout(function() {
phraseChanged();
var entropy = mnemonic.toRawEntropyHex(DOM.phrase.val());
if (entropy !== null) {
DOM.entropyMnemonicLength.val("raw");
DOM.entropy.val(entropy);
}
}, 400);
}
function phraseChanged() {

51
src/js/jsbip39.js
View File

@@ -97,22 +97,10 @@ var Mnemonic = function(language) {
}
self.check = function(mnemonic) {
var mnemonic = self.splitWords(mnemonic);
if (mnemonic.length == 0 || 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:]
@@ -128,6 +116,20 @@ var Mnemonic = function(language) {
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.toSeed = function(mnemonic, passphrase) {
passphrase = passphrase || '';
mnemonic = self.joinWords(self.splitWords(mnemonic)); // removes duplicate blanks
@@ -200,6 +202,25 @@ var Mnemonic = function(language) {
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