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Diffstat (limited to 'core/sha512.js')
| -rw-r--r-- | core/sha512.js | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/core/sha512.js b/core/sha512.js new file mode 100644 index 0000000..6e628c7 --- /dev/null +++ b/core/sha512.js @@ -0,0 +1,348 @@ +/** @fileOverview Javascript SHA-512 implementation. + * + * This implementation was written for CryptoJS by Jeff Mott and adapted for + * SJCL by Stefan Thomas. + * + * CryptoJS (c) 2009–2012 by Jeff Mott. All rights reserved. + * Released with New BSD License + * + * @author Emily Stark + * @author Mike Hamburg + * @author Dan Boneh + * @author Jeff Mott + * @author Stefan Thomas + */ + +/** + * Context for a SHA-512 operation in progress. + * @constructor + * @class Secure Hash Algorithm, 512 bits. + */ +sjcl.hash.sha512 = function (hash) { + if (!this._key[0]) { this._precompute(); } + if (hash) { + this._h = hash._h.slice(0); + this._buffer = hash._buffer.slice(0); + this._length = hash._length; + } else { + this.reset(); + } +}; + +/** + * Hash a string or an array of words. + * @static + * @param {bitArray|String} data the data to hash. + * @return {bitArray} The hash value, an array of 16 big-endian words. + */ +sjcl.hash.sha512.hash = function (data) { + return (new sjcl.hash.sha512()).update(data).finalize(); +}; + +sjcl.hash.sha512.prototype = { + /** + * The hash's block size, in bits. + * @constant + */ + blockSize: 1024, + + /** + * Reset the hash state. + * @return this + */ + reset:function () { + this._h = this._init.slice(0); + this._buffer = []; + this._length = 0; + return this; + }, + + /** + * Input several words to the hash. + * @param {bitArray|String} data the data to hash. + * @return this + */ + update: function (data) { + if (typeof data === "string") { + data = sjcl.codec.utf8String.toBits(data); + } + var i, b = this._buffer = sjcl.bitArray.concat(this._buffer, data), + ol = this._length, + nl = this._length = ol + sjcl.bitArray.bitLength(data); + for (i = 1024+ol & -1024; i <= nl; i+= 1024) { + this._block(b.splice(0,32)); + } + return this; + }, + + /** + * Complete hashing and output the hash value. + * @return {bitArray} The hash value, an array of 16 big-endian words. + */ + finalize:function () { + var i, b = this._buffer, h = this._h; + + // Round out and push the buffer + b = sjcl.bitArray.concat(b, [sjcl.bitArray.partial(1,1)]); + + // Round out the buffer to a multiple of 32 words, less the 4 length words. + for (i = b.length + 4; i & 31; i++) { + b.push(0); + } + + // append the length + b.push(0); + b.push(0); + b.push(Math.floor(this._length / 0x100000000)); + b.push(this._length | 0); + + while (b.length) { + this._block(b.splice(0,32)); + } + + this.reset(); + return h; + }, + + /** + * The SHA-512 initialization vector, to be precomputed. + * @private + */ + _init:[], + + /** + * Least significant 24 bits of SHA512 initialization values. + * + * Javascript only has 53 bits of precision, so we compute the 40 most + * significant bits and add the remaining 24 bits as constants. + * + * @private + */ + _initr: [ 0xbcc908, 0xcaa73b, 0x94f82b, 0x1d36f1, 0xe682d1, 0x3e6c1f, 0x41bd6b, 0x7e2179 ], + + /* + _init: + [0x6a09e667, 0xf3bcc908, 0xbb67ae85, 0x84caa73b, 0x3c6ef372, 0xfe94f82b, 0xa54ff53a, 0x5f1d36f1, + 0x510e527f, 0xade682d1, 0x9b05688c, 0x2b3e6c1f, 0x1f83d9ab, 0xfb41bd6b, 0x5be0cd19, 0x137e2179], + */ + + /** + * The SHA-512 hash key, to be precomputed. + * @private + */ + _key:[], + + /** + * Least significant 24 bits of SHA512 key values. + * @private + */ + _keyr: + [0x28ae22, 0xef65cd, 0x4d3b2f, 0x89dbbc, 0x48b538, 0x05d019, 0x194f9b, 0x6d8118, + 0x030242, 0x706fbe, 0xe4b28c, 0xffb4e2, 0x7b896f, 0x1696b1, 0xc71235, 0x692694, + 0xf14ad2, 0x4f25e3, 0x8cd5b5, 0xac9c65, 0x2b0275, 0xa6e483, 0x41fbd4, 0x1153b5, + 0x66dfab, 0xb43210, 0xfb213f, 0xef0ee4, 0xa88fc2, 0x0aa725, 0x03826f, 0x0e6e70, + 0xd22ffc, 0x26c926, 0xc42aed, 0x95b3df, 0xaf63de, 0x77b2a8, 0xedaee6, 0x82353b, + 0xf10364, 0x423001, 0xf89791, 0x54be30, 0xef5218, 0x65a910, 0x71202a, 0xbbd1b8, + 0xd2d0c8, 0x41ab53, 0x8eeb99, 0x9b48a8, 0xc95a63, 0x418acb, 0x63e373, 0xb2b8a3, + 0xefb2fc, 0x172f60, 0xf0ab72, 0x6439ec, 0x631e28, 0x82bde9, 0xc67915, 0x72532b, + 0x26619c, 0xc0c207, 0xe0eb1e, 0x6ed178, 0x176fba, 0xc898a6, 0xf90dae, 0x1c471b, + 0x047d84, 0xc72493, 0xc9bebc, 0x100d4c, 0x3e42b6, 0x657e2a, 0xd6faec, 0x475817], + + /* + _key: + [0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd, 0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc, + 0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019, 0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118, + 0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe, 0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2, + 0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1, 0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694, + 0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3, 0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65, + 0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483, 0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5, + 0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210, 0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4, + 0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725, 0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70, + 0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926, 0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df, + 0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8, 0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b, + 0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001, 0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30, + 0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910, 0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8, + 0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53, 0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8, + 0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb, 0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3, + 0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60, 0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec, + 0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9, 0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b, + 0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207, 0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178, + 0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6, 0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b, + 0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493, 0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c, + 0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a, 0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817], + */ + + /** + * Function to precompute _init and _key. + * @private + */ + _precompute: function () { + // XXX: This code is for precomputing the SHA256 constants, change for + // SHA512 and re-enable. + var i = 0, prime = 2, factor; + + function frac(x) { return (x-Math.floor(x)) * 0x100000000 | 0; } + function frac2(x) { return (x-Math.floor(x)) * 0x10000000000 & 0xff; } + + outer: for (; i<80; prime++) { + for (factor=2; factor*factor <= prime; factor++) { + if (prime % factor === 0) { + // not a prime + continue outer; + } + } + + if (i<8) { + this._init[i*2] = frac(Math.pow(prime, 1/2)); + this._init[i*2+1] = (frac2(Math.pow(prime, 1/2)) << 24) | this._initr[i]; + } + this._key[i*2] = frac(Math.pow(prime, 1/3)); + this._key[i*2+1] = (frac2(Math.pow(prime, 1/3)) << 24) | this._keyr[i]; + i++; + } + }, + + /** + * Perform one cycle of SHA-512. + * @param {bitArray} words one block of words. + * @private + */ + _block:function (words) { + var i, wrh, wrl, + w = words.slice(0), + h = this._h, + k = this._key, + h0h = h[ 0], h0l = h[ 1], h1h = h[ 2], h1l = h[ 3], + h2h = h[ 4], h2l = h[ 5], h3h = h[ 6], h3l = h[ 7], + h4h = h[ 8], h4l = h[ 9], h5h = h[10], h5l = h[11], + h6h = h[12], h6l = h[13], h7h = h[14], h7l = h[15]; + + // Working variables + var ah = h0h, al = h0l, bh = h1h, bl = h1l, + ch = h2h, cl = h2l, dh = h3h, dl = h3l, + eh = h4h, el = h4l, fh = h5h, fl = h5l, + gh = h6h, gl = h6l, hh = h7h, hl = h7l; + + for (i=0; i<80; i++) { + // load up the input word for this round + if (i<16) { + wrh = w[i * 2]; + wrl = w[i * 2 + 1]; + } else { + // Gamma0 + var gamma0xh = w[(i-15) * 2]; + var gamma0xl = w[(i-15) * 2 + 1]; + var gamma0h = + ((gamma0xl << 31) | (gamma0xh >>> 1)) ^ + ((gamma0xl << 24) | (gamma0xh >>> 8)) ^ + (gamma0xh >>> 7); + var gamma0l = + ((gamma0xh << 31) | (gamma0xl >>> 1)) ^ + ((gamma0xh << 24) | (gamma0xl >>> 8)) ^ + ((gamma0xh << 25) | (gamma0xl >>> 7)); + + // Gamma1 + var gamma1xh = w[(i-2) * 2]; + var gamma1xl = w[(i-2) * 2 + 1]; + var gamma1h = + ((gamma1xl << 13) | (gamma1xh >>> 19)) ^ + ((gamma1xh << 3) | (gamma1xl >>> 29)) ^ + (gamma1xh >>> 6); + var gamma1l = + ((gamma1xh << 13) | (gamma1xl >>> 19)) ^ + ((gamma1xl << 3) | (gamma1xh >>> 29)) ^ + ((gamma1xh << 26) | (gamma1xl >>> 6)); + + // Shortcuts + var wr7h = w[(i-7) * 2]; + var wr7l = w[(i-7) * 2 + 1]; + + var wr16h = w[(i-16) * 2]; + var wr16l = w[(i-16) * 2 + 1]; + + // W(round) = gamma0 + W(round - 7) + gamma1 + W(round - 16) + wrl = gamma0l + wr7l; + wrh = gamma0h + wr7h + ((wrl >>> 0) < (gamma0l >>> 0) ? 1 : 0); + wrl += gamma1l; + wrh += gamma1h + ((wrl >>> 0) < (gamma1l >>> 0) ? 1 : 0); + wrl += wr16l; + wrh += wr16h + ((wrl >>> 0) < (wr16l >>> 0) ? 1 : 0); + } + + w[i*2] = wrh |= 0; + w[i*2 + 1] = wrl |= 0; + + // Ch + var chh = (eh & fh) ^ (~eh & gh); + var chl = (el & fl) ^ (~el & gl); + + // Maj + var majh = (ah & bh) ^ (ah & ch) ^ (bh & ch); + var majl = (al & bl) ^ (al & cl) ^ (bl & cl); + + // Sigma0 + var sigma0h = ((al << 4) | (ah >>> 28)) ^ ((ah << 30) | (al >>> 2)) ^ ((ah << 25) | (al >>> 7)); + var sigma0l = ((ah << 4) | (al >>> 28)) ^ ((al << 30) | (ah >>> 2)) ^ ((al << 25) | (ah >>> 7)); + + // Sigma1 + var sigma1h = ((el << 18) | (eh >>> 14)) ^ ((el << 14) | (eh >>> 18)) ^ ((eh << 23) | (el >>> 9)); + var sigma1l = ((eh << 18) | (el >>> 14)) ^ ((eh << 14) | (el >>> 18)) ^ ((el << 23) | (eh >>> 9)); + + // K(round) + var krh = k[i*2]; + var krl = k[i*2+1]; + + // t1 = h + sigma1 + ch + K(round) + W(round) + var t1l = hl + sigma1l; + var t1h = hh + sigma1h + ((t1l >>> 0) < (hl >>> 0) ? 1 : 0); + t1l += chl; + t1h += chh + ((t1l >>> 0) < (chl >>> 0) ? 1 : 0); + t1l += krl; + t1h += krh + ((t1l >>> 0) < (krl >>> 0) ? 1 : 0); + t1l = t1l + wrl|0; // FF32..FF34 perf issue https://bugzilla.mozilla.org/show_bug.cgi?id=1054972 + t1h += wrh + ((t1l >>> 0) < (wrl >>> 0) ? 1 : 0); + + // t2 = sigma0 + maj + var t2l = sigma0l + majl; + var t2h = sigma0h + majh + ((t2l >>> 0) < (sigma0l >>> 0) ? 1 : 0); + + // Update working variables + hh = gh; + hl = gl; + gh = fh; + gl = fl; + fh = eh; + fl = el; + el = (dl + t1l) | 0; + eh = (dh + t1h + ((el >>> 0) < (dl >>> 0) ? 1 : 0)) | 0; + dh = ch; + dl = cl; + ch = bh; + cl = bl; + bh = ah; + bl = al; + al = (t1l + t2l) | 0; + ah = (t1h + t2h + ((al >>> 0) < (t1l >>> 0) ? 1 : 0)) | 0; + } + + // Intermediate hash + h0l = h[1] = (h0l + al) | 0; + h[0] = (h0h + ah + ((h0l >>> 0) < (al >>> 0) ? 1 : 0)) | 0; + h1l = h[3] = (h1l + bl) | 0; + h[2] = (h1h + bh + ((h1l >>> 0) < (bl >>> 0) ? 1 : 0)) | 0; + h2l = h[5] = (h2l + cl) | 0; + h[4] = (h2h + ch + ((h2l >>> 0) < (cl >>> 0) ? 1 : 0)) | 0; + h3l = h[7] = (h3l + dl) | 0; + h[6] = (h3h + dh + ((h3l >>> 0) < (dl >>> 0) ? 1 : 0)) | 0; + h4l = h[9] = (h4l + el) | 0; + h[8] = (h4h + eh + ((h4l >>> 0) < (el >>> 0) ? 1 : 0)) | 0; + h5l = h[11] = (h5l + fl) | 0; + h[10] = (h5h + fh + ((h5l >>> 0) < (fl >>> 0) ? 1 : 0)) | 0; + h6l = h[13] = (h6l + gl) | 0; + h[12] = (h6h + gh + ((h6l >>> 0) < (gl >>> 0) ? 1 : 0)) | 0; + h7l = h[15] = (h7l + hl) | 0; + h[14] = (h7h + hh + ((h7l >>> 0) < (hl >>> 0) ? 1 : 0)) | 0; + } +}; + + |