bip39 - npm Package Compare versions

Comparing version 0.1.0 to 1.0.1

index.js

@@ -1,8 +0,12 @@
-Crypto = require('crypto-js')
+var Crypto = require('crypto-js')
+var Wordlists = require('require-json-tree')('./wordlists')
 
-module.exports = {
-  mnemonicToSeed: mnemonicToSeed
+module.exports = BIP39
+
+function BIP39(language){
+  language = language || 'en'
+  this.wordlist = Wordlists[language]
 }
 
-function mnemonicToSeed(mnemonic, password){
+BIP39.prototype.mnemonicToSeed = function(mnemonic, password){
   var options = {iterations: 2048, hasher: Crypto.algo.SHA512, keySize: 512/32}
@@ -12,2 +16,17 @@ return Crypto.PBKDF2(mnemonic, salt(password), options).toString(Crypto.enc.Hex)
 
+BIP39.prototype.entropyToMnemonic = function(entropy){
+  var entropyBytes = hexToBytes(entropy)
+  var bits = bytesToBinary(entropyBytes)
+
+  var hash = Crypto.SHA256(bytesToWordArray(entropyBytes))
+  var checksumBits = bytesToBinary(wordsToBytes(hash.words))
+  var checksum = checksumBits.substr(0, bits.length / 32)
+
+  var chunks = (bits + checksum).match(/(.{1,11})/g)
+  return chunks.map(function(binary){
+    var index = parseInt(binary, 2)
+    return this.wordlist[index]
+  }, this).join(' ')
+}
+
 function salt(password) {
@@ -20,1 +39,41 @@ return encode_utf8('mnemonic' + (password || ''))
 }
+
+//=========== helper methods from bitcoinjs-lib ========
+
+function hexToBytes(hex) {
+  return hex.match(/../g).map(function(x) {
+    return parseInt(x,16)
+  });
+}
+
+function bytesToBinary(bytes) {
+  return bytes.map(function(x) {
+    return lpad(x.toString(2), '0', 8)
+  }).join('');
+}
+
+function bytesToWordArray(bytes) {
+  return new Crypto.lib.WordArray.init(bytesToWords(bytes), bytes.length)
+}
+
+function bytesToWords(bytes) {
+    var words = [];
+    for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
+        words[b >>> 5] |= bytes[i] << (24 - b % 32);
+    }
+    return words;
+}
+
+function wordsToBytes(words) {
+    var bytes = [];
+    for (var b = 0; b < words.length * 32; b += 8) {
+        bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
+    }
+    return bytes;
+}
+
+function lpad(str, padString, length) {
+  while (str.length < length) str = padString + str;
+  return str;
+}
+

package.json

 {
   "name": "bip39",
-  "version": "0.1.0",
+  "version": "1.0.1",
   "description": "Bitcoin BIP39: Mnemonic code for generating deterministic keys",
@@ -16,3 +16,4 @@ "main": "index.js",
   "dependencies": {
-    "crypto-js": "^3.1.2-2"
+    "crypto-js": "^3.1.2-2",
+    "require-json-tree": "~1.0.0"
   },
@@ -19,0 +20,0 @@ "devDependencies": {

README.md

@@ -11,6 +11,11 @@ bip39
 ```javascript
-bip39 = require('bip39')
-bip39.mnemonicToSeed('crazy horse battery staple')
-// wait for it...
-// 'd6b0f05e5e039b4b4adb72e84f3d5df121cc2dba8b236a1b3a5a8d487b9641096717364fc96e24ddbc648e0e6badbff72332e7d44dc2a42796c2d7e58ee632de'
+var BIP39 = require('bip39')
+
+bip39 = new BIP39() // 'en' is the default language
+
+bip39.entropyToMnemonic('1337') // hex input
+// 'basket actual'
+
+bip39.mnemonicToSeed('basket actual') // wait for it...
+// '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f'
 ```
@@ -20,3 +25,2 @@
 
-- seedToMnemonic
 - generateMnemonic

test/index.js

 var vectors = require('./vectors.json').english
-var bip39 = require('../index.js')
+var BIP39 = require('../index.js')
+var wordlist = require('../Wordlists/en.json')
 var assert = require('assert')
 
+var bip39 = new BIP39()
+
+describe('constructor', function(){
+  it('defaults language to english', function(){
+    assert.deepEqual(bip39.wordlist, wordlist)
+  })
+})
+
 describe('mnemonicToSeed', function(){
@@ -12,1 +21,9 @@ vectors.forEach(function(v, i){
 })
+
+describe('entropyToMnemonic', function(){
+  vectors.forEach(function(v, i){
+    it('works for tests vector ' + i, function(){
+      assert.equal(bip39.entropyToMnemonic(v[0]), v[1])
+    })
+  })
+})

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Improved metrics

Total package byte prevSize

35116

increased by262.92%

Number of package files

7

increased by16.67%

Lines of code

2259

increased by1426.35%

Number of low quality alerts

1

decreased by-50%

Number of lines in readme file

25

increased by19.05%

Worsened metrics

Dependency count

2

increased by100%

Number of medium supply chain risk alerts

1

increased byInfinity%

Dependency changes

• + Addedrequire-json-tree@~1.0.0

• + Addedrequire-json-tree@1.0.0(transitive)