corrade-nucleus-nucleons – Blame information for rev 20
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Rev | Author | Line No. | Line |
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20 | office | 1 | (function(){ |
2 | |||
3 | var C = (typeof window === 'undefined') ? require('./Crypto').Crypto : window.Crypto; |
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4 | |||
5 | // Shortcuts
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6 | var util = C.util, |
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7 | charenc = C.charenc, |
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8 | UTF8 = charenc.UTF8, |
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9 | Binary = charenc.Binary; |
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10 | |||
11 | // Constants
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12 | var K = [ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, |
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13 | 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, |
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14 | 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, |
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15 | 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, |
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16 | 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, |
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17 | 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, |
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18 | 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, |
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19 | 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, |
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20 | 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, |
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21 | 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, |
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22 | 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, |
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23 | 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, |
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24 | 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, |
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25 | 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, |
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26 | 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, |
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27 | 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 ]; |
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28 | |||
29 | // Public API
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30 | var SHA256 = C.SHA256 = function (message, options) { |
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31 | var digestbytes = util.wordsToBytes(SHA256._sha256(message)); |
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32 | return options && options.asBytes ? digestbytes : |
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33 | options && options.asString ? Binary.bytesToString(digestbytes) : |
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34 | util.bytesToHex(digestbytes); |
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35 | }; |
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36 | |||
37 | // The core
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38 | SHA256._sha256 = function (message) { |
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39 | |||
40 | // Convert to byte array
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41 | if (message.constructor == String) message = UTF8.stringToBytes(message); |
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42 | /* else, assume byte array already */ |
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43 | |||
44 | var m = util.bytesToWords(message), |
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45 | l = message.length * 8, |
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46 | H = [ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, |
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47 | 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 ], |
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48 | w = [], |
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49 | a, b, c, d, e, f, g, h, i, j, |
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50 | t1, t2; |
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51 | |||
52 | // Padding
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53 | m[l >> 5] |= 0x80 << (24 - l % 32); |
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54 | m[((l + 64 >> 9) << 4) + 15] = l; |
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55 | |||
56 | for (var i = 0; i < m.length; i += 16) { |
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57 | |||
58 | a = H[0]; |
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59 | b = H[1]; |
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60 | c = H[2]; |
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61 | d = H[3]; |
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62 | e = H[4]; |
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63 | f = H[5]; |
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64 | g = H[6]; |
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65 | h = H[7]; |
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66 | |||
67 | for (var j = 0; j < 64; j++) { |
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68 | |||
69 | if (j < 16) w[j] = m[j + i]; |
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70 | else { |
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71 | |||
72 | var gamma0x = w[j - 15], |
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73 | gamma1x = w[j - 2], |
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74 | gamma0 = ((gamma0x << 25) | (gamma0x >>> 7)) ^ |
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75 | ((gamma0x << 14) | (gamma0x >>> 18)) ^ |
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76 | (gamma0x >>> 3), |
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77 | gamma1 = ((gamma1x << 15) | (gamma1x >>> 17)) ^ |
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78 | ((gamma1x << 13) | (gamma1x >>> 19)) ^ |
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79 | (gamma1x >>> 10); |
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80 | |||
81 | w[j] = gamma0 + (w[j - 7] >>> 0) + |
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82 | gamma1 + (w[j - 16] >>> 0); |
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83 | |||
84 | } |
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85 | |||
86 | var ch = e & f ^ ~e & g, |
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87 | maj = a & b ^ a & c ^ b & c, |
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88 | sigma0 = ((a << 30) | (a >>> 2)) ^ |
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89 | ((a << 19) | (a >>> 13)) ^ |
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90 | ((a << 10) | (a >>> 22)), |
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91 | sigma1 = ((e << 26) | (e >>> 6)) ^ |
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92 | ((e << 21) | (e >>> 11)) ^ |
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93 | ((e << 7) | (e >>> 25)); |
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94 | |||
95 | |||
96 | t1 = (h >>> 0) + sigma1 + ch + (K[j]) + (w[j] >>> 0); |
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97 | t2 = sigma0 + maj; |
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98 | |||
99 | h = g; |
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100 | g = f; |
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101 | f = e; |
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102 | e = (d + t1) >>> 0; |
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103 | d = c; |
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104 | c = b; |
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105 | b = a; |
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106 | a = (t1 + t2) >>> 0; |
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107 | |||
108 | } |
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109 | |||
110 | H[0] += a; |
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111 | H[1] += b; |
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112 | H[2] += c; |
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113 | H[3] += d; |
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114 | H[4] += e; |
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115 | H[5] += f; |
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116 | H[6] += g; |
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117 | H[7] += h; |
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118 | |||
119 | } |
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120 | |||
121 | return H; |
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122 | |||
123 | }; |
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124 | |||
125 | // Package private blocksize
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126 | SHA256._blocksize = 16; |
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127 | |||
128 | SHA256._digestsize = 32; |
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129 | |||
130 | })(); |