corrade-nucleus-nucleons – Blame information for rev 20

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20 office 1 (function(){
2  
3 var C = (typeof window === 'undefined') ? require('./Crypto').Crypto : window.Crypto;
4  
5 // Shortcuts
6 var util = C.util,
7 charenc = C.charenc,
8 UTF8 = charenc.UTF8,
9 Binary = charenc.Binary;
10  
11 // Constants
12 var K = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
13 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
14 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
15 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
16 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
17 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
18 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
19 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
20 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
21 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
22 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
23 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
24 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
25 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
26 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
27 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 ];
28  
29 // Public API
30 var SHA256 = C.SHA256 = function (message, options) {
31 var digestbytes = util.wordsToBytes(SHA256._sha256(message));
32 return options && options.asBytes ? digestbytes :
33 options && options.asString ? Binary.bytesToString(digestbytes) :
34 util.bytesToHex(digestbytes);
35 };
36  
37 // The core
38 SHA256._sha256 = function (message) {
39  
40 // Convert to byte array
41 if (message.constructor == String) message = UTF8.stringToBytes(message);
42 /* else, assume byte array already */
43  
44 var m = util.bytesToWords(message),
45 l = message.length * 8,
46 H = [ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
47 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 ],
48 w = [],
49 a, b, c, d, e, f, g, h, i, j,
50 t1, t2;
51  
52 // Padding
53 m[l >> 5] |= 0x80 << (24 - l % 32);
54 m[((l + 64 >> 9) << 4) + 15] = l;
55  
56 for (var i = 0; i < m.length; i += 16) {
57  
58 a = H[0];
59 b = H[1];
60 c = H[2];
61 d = H[3];
62 e = H[4];
63 f = H[5];
64 g = H[6];
65 h = H[7];
66  
67 for (var j = 0; j < 64; j++) {
68  
69 if (j < 16) w[j] = m[j + i];
70 else {
71  
72 var gamma0x = w[j - 15],
73 gamma1x = w[j - 2],
74 gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^
75 ((gamma0x << 14) | (gamma0x >>> 18)) ^
76 (gamma0x >>> 3),
77 gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^
78 ((gamma1x << 13) | (gamma1x >>> 19)) ^
79 (gamma1x >>> 10);
80  
81 w[j] = gamma0 + (w[j - 7] >>> 0) +
82 gamma1 + (w[j - 16] >>> 0);
83  
84 }
85  
86 var ch = e & f ^ ~e & g,
87 maj = a & b ^ a & c ^ b & c,
88 sigma0 = ((a << 30) | (a >>> 2)) ^
89 ((a << 19) | (a >>> 13)) ^
90 ((a << 10) | (a >>> 22)),
91 sigma1 = ((e << 26) | (e >>> 6)) ^
92 ((e << 21) | (e >>> 11)) ^
93 ((e << 7) | (e >>> 25));
94  
95  
96 t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0);
97 t2 = sigma0 + maj;
98  
99 h = g;
100 g = f;
101 f = e;
102 e = (d + t1) >>> 0;
103 d = c;
104 c = b;
105 b = a;
106 a = (t1 + t2) >>> 0;
107  
108 }
109  
110 H[0] += a;
111 H[1] += b;
112 H[2] += c;
113 H[3] += d;
114 H[4] += e;
115 H[5] += f;
116 H[6] += g;
117 H[7] += h;
118  
119 }
120  
121 return H;
122  
123 };
124  
125 // Package private blocksize
126 SHA256._blocksize = 16;
127  
128 SHA256._digestsize = 32;
129  
130 })();