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authoriancoleman <1281387+iancoleman@users.noreply.github.com>2019-11-11 09:21:07 +1100
committerGitHub <noreply@github.com>2019-11-11 09:21:07 +1100
commit3dbf117928bb17d58cc54fa1faa9354c014e665b (patch)
treef3735716fbd1c66c89698461060715979e37df92 /src
parent342ff964aa63354694d659c183e2525aa0983a56 (diff)
parent611f76238dedd0418c79a0d918d46d2c92b0149c (diff)
downloadBIP39-3dbf117928bb17d58cc54fa1faa9354c014e665b.tar.gz
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Merge pull request #271 from cernekee/local
Allow converting mnemonic back to raw entropy value
Diffstat (limited to 'src')
-rw-r--r--src/js/index.js9
-rw-r--r--src/js/jsbip39.js51
2 files changed, 44 insertions, 16 deletions
diff --git a/src/js/index.js b/src/js/index.js
index f3302a6..da901f6 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -232,7 +232,14 @@
232 if (phraseChangeTimeoutEvent != null) { 232 if (phraseChangeTimeoutEvent != null) {
233 clearTimeout(phraseChangeTimeoutEvent); 233 clearTimeout(phraseChangeTimeoutEvent);
234 } 234 }
235 phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400); 235 phraseChangeTimeoutEvent = setTimeout(function() {
236 phraseChanged();
237 var entropy = mnemonic.toRawEntropyHex(DOM.phrase.val());
238 if (entropy !== null) {
239 DOM.entropyMnemonicLength.val("raw");
240 DOM.entropy.val(entropy);
241 }
242 }, 400);
236 } 243 }
237 244
238 function phraseChanged() { 245 function phraseChanged() {
diff --git a/src/js/jsbip39.js b/src/js/jsbip39.js
index 3230e3b..9a6e7ec 100644
--- a/src/js/jsbip39.js
+++ b/src/js/jsbip39.js
@@ -97,22 +97,10 @@ var Mnemonic = function(language) {
97 } 97 }
98 98
99 self.check = function(mnemonic) { 99 self.check = function(mnemonic) {
100 var mnemonic = self.splitWords(mnemonic); 100 var b = mnemonicToBinaryString(mnemonic);
101 if (mnemonic.length == 0 || mnemonic.length % 3 > 0) { 101 if (b === null) {
102 return false 102 return false;
103 }
104 // idx = map(lambda x: bin(self.wordlist.index(x))[2:].zfill(11), mnemonic)
105 var idx = [];
106 for (var i=0; i<mnemonic.length; i++) {
107 var word = mnemonic[i];
108 var wordIndex = wordlist.indexOf(word);
109 if (wordIndex == -1) {
110 return false;
111 }
112 var binaryIndex = zfill(wordIndex.toString(2), 11);
113 idx.push(binaryIndex);
114 } 103 }
115 var b = idx.join('');
116 var l = b.length; 104 var l = b.length;
117 //d = b[:l / 33 * 32] 105 //d = b[:l / 33 * 32]
118 //h = b[-l / 33:] 106 //h = b[-l / 33:]
@@ -128,6 +116,20 @@ var Mnemonic = function(language) {
128 return h == nh; 116 return h == nh;
129 } 117 }
130 118
119 self.toRawEntropyHex = function(mnemonic) {
120 var b = mnemonicToBinaryString(mnemonic);
121 if (b === null)
122 return null;
123 var d = b.substring(0, b.length / 33 * 32);
124 var nd = binaryStringToWordArray(d);
125
126 var h = "";
127 for (var i=0; i<nd.length; i++) {
128 h += ('0000000' + nd[i].toString(16)).slice(-8);
129 }
130 return h;
131 }
132
131 self.toSeed = function(mnemonic, passphrase) { 133 self.toSeed = function(mnemonic, passphrase) {
132 passphrase = passphrase || ''; 134 passphrase = passphrase || '';
133 mnemonic = self.joinWords(self.splitWords(mnemonic)); // removes duplicate blanks 135 mnemonic = self.joinWords(self.splitWords(mnemonic)); // removes duplicate blanks
@@ -200,6 +202,25 @@ var Mnemonic = function(language) {
200 return a; 202 return a;
201 } 203 }
202 204
205 function mnemonicToBinaryString(mnemonic) {
206 var mnemonic = self.splitWords(mnemonic);
207 if (mnemonic.length == 0 || mnemonic.length % 3 > 0) {
208 return null;
209 }
210 // idx = map(lambda x: bin(self.wordlist.index(x))[2:].zfill(11), mnemonic)
211 var idx = [];
212 for (var i=0; i<mnemonic.length; i++) {
213 var word = mnemonic[i];
214 var wordIndex = wordlist.indexOf(word);
215 if (wordIndex == -1) {
216 return null;
217 }
218 var binaryIndex = zfill(wordIndex.toString(2), 11);
219 idx.push(binaryIndex);
220 }
221 return idx.join('');
222 }
223
203 // Pad a numeric string on the left with zero digits until the given width 224 // Pad a numeric string on the left with zero digits until the given width
204 // is reached. 225 // is reached.
205 // Note this differs to the python implementation because it does not 226 // Note this differs to the python implementation because it does not