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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 C_enc = C.enc;
 
-     var Utf8 = C_enc.Utf8;
 
-     var C_algo = C.algo;
 
-     /**
 
-      * HMAC algorithm.
 
-      */
 
-     var HMAC = C_algo.HMAC = Base.extend({
 
-         /**
 
-          * Initializes a newly created HMAC.
 
-          *
 
-          * @param {Hasher} hasher The hash algorithm to use.
 
-          * @param {WordArray|string} key The secret key.
 
-          *
 
-          * @example
 
-          *
 
-          *     var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
 
-          */
 
-         init: function (hasher, key) {
 
-             // Init hasher
 
-             hasher = this._hasher = new hasher.init();
 
-             // Convert string to WordArray, else assume WordArray already
 
-             if (typeof key == 'string') {
 
-                 key = Utf8.parse(key);
 
-             }
 
-             // Shortcuts
 
-             var hasherBlockSize = hasher.blockSize;
 
-             var hasherBlockSizeBytes = hasherBlockSize * 4;
 
-             // Allow arbitrary length keys
 
-             if (key.sigBytes > hasherBlockSizeBytes) {
 
-                 key = hasher.finalize(key);
 
-             }
 
-             // Clamp excess bits
 
-             key.clamp();
 
-             // Clone key for inner and outer pads
 
-             var oKey = this._oKey = key.clone();
 
-             var iKey = this._iKey = key.clone();
 
-             // Shortcuts
 
-             var oKeyWords = oKey.words;
 
-             var iKeyWords = iKey.words;
 
-             // XOR keys with pad constants
 
-             for (var i = 0; i < hasherBlockSize; i++) {
 
-                 oKeyWords[i] ^= 0x5c5c5c5c;
 
-                 iKeyWords[i] ^= 0x36363636;
 
-             }
 
-             oKey.sigBytes = iKey.sigBytes = hasherBlockSizeBytes;
 
-             // Set initial values
 
-             this.reset();
 
-         },
 
-         /**
 
-          * Resets this HMAC to its initial state.
 
-          *
 
-          * @example
 
-          *
 
-          *     hmacHasher.reset();
 
-          */
 
-         reset: function () {
 
-             // Shortcut
 
-             var hasher = this._hasher;
 
-             // Reset
 
-             hasher.reset();
 
-             hasher.update(this._iKey);
 
-         },
 
-         /**
 
-          * Updates this HMAC with a message.
 
-          *
 
-          * @param {WordArray|string} messageUpdate The message to append.
 
-          *
 
-          * @return {HMAC} This HMAC instance.
 
-          *
 
-          * @example
 
-          *
 
-          *     hmacHasher.update('message');
 
-          *     hmacHasher.update(wordArray);
 
-          */
 
-         update: function (messageUpdate) {
 
-             this._hasher.update(messageUpdate);
 
-             // Chainable
 
-             return this;
 
-         },
 
-         /**
 
-          * Finalizes the HMAC computation.
 
-          * Note that the finalize operation is effectively a destructive, read-once operation.
 
-          *
 
-          * @param {WordArray|string} messageUpdate (Optional) A final message update.
 
-          *
 
-          * @return {WordArray} The HMAC.
 
-          *
 
-          * @example
 
-          *
 
-          *     var hmac = hmacHasher.finalize();
 
-          *     var hmac = hmacHasher.finalize('message');
 
-          *     var hmac = hmacHasher.finalize(wordArray);
 
-          */
 
-         finalize: function (messageUpdate) {
 
-             // Shortcut
 
-             var hasher = this._hasher;
 
-             // Compute HMAC
 
-             var innerHash = hasher.finalize(messageUpdate);
 
-             hasher.reset();
 
-             var hmac = hasher.finalize(this._oKey.clone().concat(innerHash));
 
-             return hmac;
 
-         }
 
-     });
 
- }());
 
 
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