corrade-nucleus-nucleons – Blame information for rev 20
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 | // Public API
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| 12 | var SHA1 = C.SHA1 = function (message, options) { |
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| 13 | var digestbytes = util.wordsToBytes(SHA1._sha1(message)); |
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| 14 | return options && options.asBytes ? digestbytes : |
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| 15 | options && options.asString ? Binary.bytesToString(digestbytes) : |
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| 16 | util.bytesToHex(digestbytes); |
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| 17 | }; |
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| 18 | |||
| 19 | // The core
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| 20 | SHA1._sha1 = function (message) { |
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| 21 | |||
| 22 | // Convert to byte array
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| 23 | if (message.constructor == String) message = UTF8.stringToBytes(message); |
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| 24 | /* else, assume byte array already */ |
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| 25 | |||
| 26 | var m = util.bytesToWords(message), |
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| 27 | l = message.length * 8, |
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| 28 | w = [], |
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| 29 | H0 = 1732584193, |
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| 30 | H1 = -271733879, |
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| 31 | H2 = -1732584194, |
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| 32 | H3 = 271733878, |
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| 33 | H4 = -1009589776; |
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| 34 | |||
| 35 | // Padding
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| 36 | m[l >> 5] |= 0x80 << (24 - l % 32); |
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| 37 | m[((l + 64 >>> 9) << 4) + 15] = l; |
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| 38 | |||
| 39 | for (var i = 0; i < m.length; i += 16) { |
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| 40 | |||
| 41 | var a = H0, |
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| 42 | b = H1, |
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| 43 | c = H2, |
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| 44 | d = H3, |
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| 45 | e = H4; |
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| 46 | |||
| 47 | for (var j = 0; j < 80; j++) { |
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| 48 | |||
| 49 | if (j < 16) w[j] = m[i + j]; |
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| 50 | else { |
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| 51 | var n = w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16]; |
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| 52 | w[j] = (n << 1) | (n >>> 31); |
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| 53 | } |
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| 54 | |||
| 55 | var t = ((H0 << 5) | (H0 >>> 27)) + H4 + (w[j] >>> 0) + ( |
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| 56 | j < 20 ? (H1 & H2 | ~H1 & H3) + 1518500249 : |
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| 57 | j < 40 ? (H1 ^ H2 ^ H3) + 1859775393 : |
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| 58 | j < 60 ? (H1 & H2 | H1 & H3 | H2 & H3) - 1894007588 : |
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| 59 | (H1 ^ H2 ^ H3) - 899497514); |
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| 60 | |||
| 61 | H4 = H3; |
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| 62 | H3 = H2; |
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| 63 | H2 = (H1 << 30) | (H1 >>> 2); |
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| 64 | H1 = H0; |
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| 65 | H0 = t; |
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| 66 | |||
| 67 | } |
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| 68 | |||
| 69 | H0 += a; |
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| 70 | H1 += b; |
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| 71 | H2 += c; |
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| 72 | H3 += d; |
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| 73 | H4 += e; |
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| 74 | |||
| 75 | } |
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| 76 | |||
| 77 | return [H0, H1, H2, H3, H4]; |
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| 78 | |||
| 79 | }; |
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| 80 | |||
| 81 | // Package private blocksize
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| 82 | SHA1._blocksize = 16; |
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| 83 | |||
| 84 | SHA1._digestsize = 20; |
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| 85 | |||
| 86 | })(); |