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							- /*
 
- CryptoJS v3.1.2
 
- code.google.com/p/crypto-js
 
- (c) 2009-2013 by Jeff Mott. All rights reserved.
 
- code.google.com/p/crypto-js/wiki/License
 
- */
 
- (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) {
 
-             // 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);
 
-                 }
 
-                 var 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);
 
-     };
 
- }());
 
 
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