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1 line
11 KiB
JSON
1 line
11 KiB
JSON
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{"ast":null,"code":";\n(function (root, factory, undef) {\n if (typeof exports === \"object\") {\n // CommonJS\n module.exports = exports = factory(require(\"./core\"), require(\"./sha1\"), require(\"./hmac\"));\n } else if (typeof define === \"function\" && define.amd) {\n // AMD\n define([\"./core\", \"./sha1\", \"./hmac\"], factory);\n } else {\n // Global (browser)\n factory(root.CryptoJS);\n }\n})(this, function (CryptoJS) {\n (function () {\n // Shortcuts\n var C = CryptoJS;\n var C_lib = C.lib;\n var Base = C_lib.Base;\n var WordArray = C_lib.WordArray;\n var C_algo = C.algo;\n var MD5 = C_algo.MD5;\n\n /**\n * This key derivation function is meant to conform with EVP_BytesToKey.\n * www.openssl.org/docs/crypto/EVP_BytesToKey.html\n */\n var EvpKDF = C_algo.EvpKDF = Base.extend({\n /**\n * Configuration options.\n *\n * @property {number} keySize The key size in words to generate. Default: 4 (128 bits)\n * @property {Hasher} hasher The hash algorithm to use. Default: MD5\n * @property {number} iterations The number of iterations to perform. Default: 1\n */\n cfg: Base.extend({\n keySize: 128 / 32,\n hasher: MD5,\n iterations: 1\n }),\n /**\n * Initializes a newly created key derivation function.\n *\n * @param {Object} cfg (Optional) The configuration options to use for the derivation.\n *\n * @example\n *\n * var kdf = CryptoJS.algo.EvpKDF.create();\n * var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8 });\n * var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8, iterations: 1000 });\n */\n init: function (cfg) {\n this.cfg = this.cfg.extend(cfg);\n },\n /**\n * Derives a key from a password.\n *\n * @param {WordArray|string} password The password.\n * @param {WordArray|string} salt A salt.\n *\n * @return {WordArray} The derived key.\n *\n * @example\n *\n * var key = kdf.compute(password, salt);\n */\n compute: function (password, salt) {\n var block;\n\n // Shortcut\n var cfg = this.cfg;\n\n // Init hasher\n var hasher = cfg.hasher.create();\n\n // Initial values\n var derivedKey = WordArray.create();\n\n // Shortcuts\n var derivedKeyWords = derivedKey.words;\n var keySize = cfg.keySize;\n var iterations = cfg.iterations;\n\n // Generate key\n while (derivedKeyWords.length < keySize) {\n if (block) {\n hasher.update(block);\n }\n block = hasher.update(password).finalize(salt);\n hasher.reset();\n\n // Iterations\n for (var i = 1; i < iterations; i++) {\n block = hasher.finalize(block);\n hasher.reset();\n }\n derivedKey.concat(block);\n }\n derivedKey.sigBytes = keySize * 4;\n return derivedKey;\n }\n });\n\n /**\n * Derives a key from a password.\n *\n * @param {WordArray|string} password The password.\n * @param {WordArray|string} salt A salt.\n * @param {Object} cfg (Optional) The configuration options to use for this computation.\n *\n * @return {WordArray} The derived key.\n *\n * @static\n *\n * @example\n *\n * var key = CryptoJS.EvpKDF(password, salt);\n * var key = CryptoJS.EvpKDF(password, salt, { keySize: 8 });\n * var key = CryptoJS.EvpKDF(password, salt, { keySize: 8, iterations: 1000 });\n */\n C.EvpKDF = function (password, salt, cfg) {\n return EvpKDF.create(cfg).compute(password, salt);\n };\n })();\n return CryptoJS.EvpKDF;\n});","map":{"version":3,"names":["root","factory","undef","exports","module","require","define","amd","CryptoJS","C","C_lib","lib","Base","WordArray","C_algo","algo","MD5","EvpKDF","extend","cfg","keySize","hasher","iterations","init","compute","password","sa
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