feat:node-modules

node_modules/crypto-js/evpkdf.js

@@ -0,0 +1,134 @@
+;(function (root, factory, undef) {
+	if (typeof exports === "object") {
+		// CommonJS
+		module.exports = exports = factory(require("./core"), require("./sha1"), require("./hmac"));
+	}
+	else if (typeof define === "function" && define.amd) {
+		// AMD
+		define(["./core", "./sha1", "./hmac"], factory);
+	}
+	else {
+		// Global (browser)
+		factory(root.CryptoJS);
+	}
+}(this, function (CryptoJS) {
+
+	(function () {
+	    // Shortcuts
+	    var C = CryptoJS;
+	    var C_lib = C.lib;
+	    var Base = C_lib.Base;
+	    var WordArray = C_lib.WordArray;
+	    var C_algo = C.algo;
+	    var MD5 = C_algo.MD5;
+
+	    /**
+	     * This key derivation function is meant to conform with EVP_BytesToKey.
+	     * www.openssl.org/docs/crypto/EVP_BytesToKey.html
+	     */
+	    var EvpKDF = C_algo.EvpKDF = Base.extend({
+	        /**
+	         * Configuration options.
+	         *
+	         * @property {number} keySize The key size in words to generate. Default: 4 (128 bits)
+	         * @property {Hasher} hasher The hash algorithm to use. Default: MD5
+	         * @property {number} iterations The number of iterations to perform. Default: 1
+	         */
+	        cfg: Base.extend({
+	            keySize: 128/32,
+	            hasher: MD5,
+	            iterations: 1
+	        }),
+
+	        /**
+	         * Initializes a newly created key derivation function.
+	         *
+	         * @param {Object} cfg (Optional) The configuration options to use for the derivation.
+	         *
+	         * @example
+	         *
+	         *     var kdf = CryptoJS.algo.EvpKDF.create();
+	         *     var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8 });
+	         *     var kdf = CryptoJS.algo.EvpKDF.create({ keySize: 8, iterations: 1000 });
+	         */
+	        init: function (cfg) {
+	            this.cfg = this.cfg.extend(cfg);
+	        },
+
+	        /**
+	         * Derives a key from a password.
+	         *
+	         * @param {WordArray|string} password The password.
+	         * @param {WordArray|string} salt A salt.
+	         *
+	         * @return {WordArray} The derived key.
+	         *
+	         * @example
+	         *
+	         *     var key = kdf.compute(password, salt);
+	         */
+	        compute: function (password, salt) {
+	            var block;
+
+	            // Shortcut
+	            var cfg = this.cfg;
+
+	            // Init hasher
+	            var hasher = cfg.hasher.create();
+
+	            // Initial values
+	            var derivedKey = WordArray.create();
+
+	            // Shortcuts
+	            var derivedKeyWords = derivedKey.words;
+	            var keySize = cfg.keySize;
+	            var iterations = cfg.iterations;
+
+	            // Generate key
+	            while (derivedKeyWords.length < keySize) {
+	                if (block) {
+	                    hasher.update(block);
+	                }
+	                block = hasher.update(password).finalize(salt);
+	                hasher.reset();
+
+	                // Iterations
+	                for (var i = 1; i < iterations; i++) {
+	                    block = hasher.finalize(block);
+	                    hasher.reset();
+	                }
+
+	                derivedKey.concat(block);
+	            }
+	            derivedKey.sigBytes = keySize * 4;
+
+	            return derivedKey;
+	        }
+	    });
+
+	    /**
+	     * Derives a key from a password.
+	     *
+	     * @param {WordArray|string} password The password.
+	     * @param {WordArray|string} salt A salt.
+	     * @param {Object} cfg (Optional) The configuration options to use for this computation.
+	     *
+	     * @return {WordArray} The derived key.
+	     *
+	     * @static
+	     *
+	     * @example
+	     *
+	     *     var key = CryptoJS.EvpKDF(password, salt);
+	     *     var key = CryptoJS.EvpKDF(password, salt, { keySize: 8 });
+	     *     var key = CryptoJS.EvpKDF(password, salt, { keySize: 8, iterations: 1000 });
+	     */
+	    C.EvpKDF = function (password, salt, cfg) {
+	        return EvpKDF.create(cfg).compute(password, salt);
+	    };
+	}());
+
+
+	return CryptoJS.EvpKDF;
+
+}));