aboutsummaryrefslogtreecommitdiffstats
path: root/library/cryptojs/components/sha224.js
blob: 289f31d5589395ef6c8e1ae90222242bed2f5622 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/*
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);
}());