corrade-nucleus-nucleons
| /base/000_base/node_modules/cryptojs/lib/PBKDF2.js |
|---|
| @@ -0,0 +1,49 @@ |
| (function(){ |
| var C = (typeof window === 'undefined') ? require('./Crypto').Crypto : window.Crypto; |
| // Shortcuts |
| var util = C.util, |
| charenc = C.charenc, |
| UTF8 = charenc.UTF8, |
| Binary = charenc.Binary; |
| C.PBKDF2 = function (password, salt, keylen, options) { |
| // Convert to byte arrays |
| if (password.constructor == String) password = UTF8.stringToBytes(password); |
| if (salt.constructor == String) salt = UTF8.stringToBytes(salt); |
| /* else, assume byte arrays already */ |
| // Defaults |
| var hasher = options && options.hasher || C.SHA1, |
| iterations = options && options.iterations || 1; |
| // Pseudo-random function |
| function PRF(password, salt) { |
| return C.HMAC(hasher, salt, password, { asBytes: true }); |
| } |
| // Generate key |
| var derivedKeyBytes = [], |
| blockindex = 1; |
| while (derivedKeyBytes.length < keylen) { |
| var block = PRF(password, salt.concat(util.wordsToBytes([blockindex]))); |
| for (var u = block, i = 1; i < iterations; i++) { |
| u = PRF(password, u); |
| for (var j = 0; j < block.length; j++) block[j] ^= u[j]; |
| } |
| derivedKeyBytes = derivedKeyBytes.concat(block); |
| blockindex++; |
| } |
| // Truncate excess bytes |
| derivedKeyBytes.length = keylen; |
| return options && options.asBytes ? derivedKeyBytes : |
| options && options.asString ? Binary.bytesToString(derivedKeyBytes) : |
| util.bytesToHex(derivedKeyBytes); |
| }; |
| })(); |