mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-22 16:35:14 +00:00
261 lines
7.0 KiB
JavaScript
261 lines
7.0 KiB
JavaScript
var inherits = require('inherits')
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var Hash = require('./hash')
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var Buffer = require('safe-buffer').Buffer
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var K = [
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0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
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0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
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0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
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0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
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0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
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0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
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0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
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0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
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0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
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0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
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0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
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0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
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0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
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0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
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0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
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0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
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0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
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0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
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0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
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0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
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0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
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0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
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0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
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0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
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0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
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0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
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0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
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0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
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0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
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0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
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0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
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0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
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0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
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0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
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0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
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0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
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0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
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0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
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0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
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0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
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]
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var W = new Array(160)
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function Sha512 () {
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this.init()
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this._w = W
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Hash.call(this, 128, 112)
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}
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inherits(Sha512, Hash)
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Sha512.prototype.init = function () {
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this._ah = 0x6a09e667
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this._bh = 0xbb67ae85
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this._ch = 0x3c6ef372
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this._dh = 0xa54ff53a
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this._eh = 0x510e527f
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this._fh = 0x9b05688c
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this._gh = 0x1f83d9ab
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this._hh = 0x5be0cd19
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this._al = 0xf3bcc908
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this._bl = 0x84caa73b
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this._cl = 0xfe94f82b
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this._dl = 0x5f1d36f1
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this._el = 0xade682d1
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this._fl = 0x2b3e6c1f
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this._gl = 0xfb41bd6b
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this._hl = 0x137e2179
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return this
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}
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function Ch (x, y, z) {
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return z ^ (x & (y ^ z))
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}
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function maj (x, y, z) {
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return (x & y) | (z & (x | y))
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}
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function sigma0 (x, xl) {
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return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
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}
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function sigma1 (x, xl) {
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return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
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}
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function Gamma0 (x, xl) {
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return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
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}
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function Gamma0l (x, xl) {
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return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
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}
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function Gamma1 (x, xl) {
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return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
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}
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function Gamma1l (x, xl) {
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return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
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}
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function getCarry (a, b) {
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return (a >>> 0) < (b >>> 0) ? 1 : 0
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}
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Sha512.prototype._update = function (M) {
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var W = this._w
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var ah = this._ah | 0
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var bh = this._bh | 0
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var ch = this._ch | 0
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var dh = this._dh | 0
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var eh = this._eh | 0
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var fh = this._fh | 0
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var gh = this._gh | 0
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var hh = this._hh | 0
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var al = this._al | 0
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var bl = this._bl | 0
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var cl = this._cl | 0
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var dl = this._dl | 0
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var el = this._el | 0
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var fl = this._fl | 0
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var gl = this._gl | 0
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var hl = this._hl | 0
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for (var i = 0; i < 32; i += 2) {
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W[i] = M.readInt32BE(i * 4)
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W[i + 1] = M.readInt32BE(i * 4 + 4)
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}
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for (; i < 160; i += 2) {
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var xh = W[i - 15 * 2]
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var xl = W[i - 15 * 2 + 1]
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var gamma0 = Gamma0(xh, xl)
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var gamma0l = Gamma0l(xl, xh)
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xh = W[i - 2 * 2]
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xl = W[i - 2 * 2 + 1]
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var gamma1 = Gamma1(xh, xl)
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var gamma1l = Gamma1l(xl, xh)
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// W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
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var Wi7h = W[i - 7 * 2]
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var Wi7l = W[i - 7 * 2 + 1]
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var Wi16h = W[i - 16 * 2]
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var Wi16l = W[i - 16 * 2 + 1]
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var Wil = (gamma0l + Wi7l) | 0
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var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
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Wil = (Wil + gamma1l) | 0
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Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
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Wil = (Wil + Wi16l) | 0
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Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0
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W[i] = Wih
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W[i + 1] = Wil
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}
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for (var j = 0; j < 160; j += 2) {
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Wih = W[j]
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Wil = W[j + 1]
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var majh = maj(ah, bh, ch)
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var majl = maj(al, bl, cl)
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var sigma0h = sigma0(ah, al)
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var sigma0l = sigma0(al, ah)
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var sigma1h = sigma1(eh, el)
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var sigma1l = sigma1(el, eh)
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// t1 = h + sigma1 + ch + K[j] + W[j]
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var Kih = K[j]
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var Kil = K[j + 1]
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var chh = Ch(eh, fh, gh)
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var chl = Ch(el, fl, gl)
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var t1l = (hl + sigma1l) | 0
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var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
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t1l = (t1l + chl) | 0
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t1h = (t1h + chh + getCarry(t1l, chl)) | 0
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t1l = (t1l + Kil) | 0
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t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
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t1l = (t1l + Wil) | 0
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t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0
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// t2 = sigma0 + maj
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var t2l = (sigma0l + majl) | 0
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var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0
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hh = gh
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hl = gl
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gh = fh
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gl = fl
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fh = eh
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fl = el
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el = (dl + t1l) | 0
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eh = (dh + t1h + getCarry(el, dl)) | 0
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dh = ch
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dl = cl
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ch = bh
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cl = bl
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bh = ah
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bl = al
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al = (t1l + t2l) | 0
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ah = (t1h + t2h + getCarry(al, t1l)) | 0
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}
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this._al = (this._al + al) | 0
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this._bl = (this._bl + bl) | 0
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this._cl = (this._cl + cl) | 0
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this._dl = (this._dl + dl) | 0
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this._el = (this._el + el) | 0
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this._fl = (this._fl + fl) | 0
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this._gl = (this._gl + gl) | 0
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this._hl = (this._hl + hl) | 0
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this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
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this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
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this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
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this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
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this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
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this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
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this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
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this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
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}
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Sha512.prototype._hash = function () {
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var H = Buffer.allocUnsafe(64)
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function writeInt64BE (h, l, offset) {
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H.writeInt32BE(h, offset)
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H.writeInt32BE(l, offset + 4)
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}
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writeInt64BE(this._ah, this._al, 0)
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writeInt64BE(this._bh, this._bl, 8)
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writeInt64BE(this._ch, this._cl, 16)
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writeInt64BE(this._dh, this._dl, 24)
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writeInt64BE(this._eh, this._el, 32)
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writeInt64BE(this._fh, this._fl, 40)
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writeInt64BE(this._gh, this._gl, 48)
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writeInt64BE(this._hh, this._hl, 56)
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return H
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}
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module.exports = Sha512
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