/*
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 WordArray = C_lib.WordArray;

    var C_algo = C.algo;

    var SHA256 = C_algo.SHA256;



    /**

     * SHA-224 hash algorithm.

     */

    var SHA224 = C_algo.SHA224 = SHA256.extend({

        _doReset: function () {

            this._hash = new WordArray.init([

                0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,

                0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4

            ]);

        },



        _doFinalize: function () {

            var hash = SHA256._doFinalize.call(this);



            hash.sigBytes -= 4;



            return hash;

        }

    });



    /**

     * Shortcut function to the hasher's object interface.

     *

     * @param {WordArray|string} message The message to hash.

     *

     * @return {WordArray} The hash.

     *

     * @static

     *

     * @example

     *

     *     var hash = CryptoJS.SHA224('message');

     *     var hash = CryptoJS.SHA224(wordArray);

     */

    C.SHA224 = SHA256._createHelper(SHA224);



    /**

     * Shortcut function to the HMAC's object interface.

     *

     * @param {WordArray|string} message The message to hash.

     * @param {WordArray|string} key The secret key.

     *

     * @return {WordArray} The HMAC.

     *

     * @static

     *

     * @example

     *

     *     var hmac = CryptoJS.HmacSHA224(message, key);

     */

    C.HmacSHA224 = SHA256._createHmacHelper(SHA224);

}());

