https://www.sahalatec.cn/themes/scratch/public/assets/oss-h5-uploa…?ver=b14a51a1cdeed5c9a3835e8bd906740a

1/*!
2 * Crypto-JS v1.1.0
3 * http://code.google.com/p/crypto-js/
4 * Copyright (c) 2009, Jeff Mott. All rights reserved.
5 * http://code.google.com/p/crypto-js/wiki/License
6 */
7(function(){
8
9// Shortcut
10var util = Crypto.util;
11
12// Public API
13var SHA1 = Crypto.SHA1 = function (message, options) {
14	var digestbytes = util.wordsToBytes(SHA1._sha1(message));
15	return options && options.asBytes ? digestbytes :
16	       options && options.asString ? util.bytesToString(digestbytes) :
17	       util.bytesToHex(digestbytes);
18};
19
20// The core
21SHA1._sha1 = function (message) {
22
23	var m  = util.stringToWords(message),
24	    l  = message.length * 8,
25	    w  =  [],
26	    H0 =  1732584193,
27	    H1 = -271733879,
28	    H2 = -1732584194,
29	    H3 =  271733878,
30	    H4 = -1009589776;
31
32	// Padding
33	m[l >> 5] |= 0x80 << (24 - l % 32);
34	m[((l + 64 >>> 9) << 4) + 15] = l;
35
36	for (var i = 0; i < m.length; i += 16) {
37
38		var a = H0,
39		    b = H1,
40		    c = H2,
41		    d = H3,
42		    e = H4;
43
44		for (var j = 0; j < 80; j++) {
45
46			if (j < 16) w[j] = m[i + j];
47			else {
48				var n = w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16];
49				w[j] = (n << 1) | (n >>> 31);
50			}
51
52			var t = ((H0 << 5) | (H0 >>> 27)) + H4 + (w[j] >>> 0) + (
53			         j < 20 ? (H1 & H2 | ~H1 & H3) + 1518500249 :
54			         j < 40 ? (H1 ^ H2 ^ H3) + 1859775393 :
55			         j < 60 ? (H1 & H2 | H1 & H3 | H2 & H3) - 1894007588 :
56			                  (H1 ^ H2 ^ H3) - 899497514);
57
58			H4 =  H3;
59			H3 =  H2;
60			H2 = (H1 << 30) | (H1 >>> 2);
61			H1 =  H0;
62			H0 =  t;
63
64		}
65
66		H0 += a;
67		H1 += b;
68		H2 += c;
69		H3 += d;
70		H4 += e;
71
72	}
73
74	return [H0, H1, H2, H3, H4];
75
76};
77
78// Package private blocksize
79SHA1._blocksize = 16;
80
81})();