nacl-sha512.js

/* Pulled out of https://github.com/dchest/tweetnacl-js/blob/8626b70/nacl-fast.js */

var crypto_hash_BYTES = 64;

var K = [
	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 ts64(x, i, h, l) {
	x[i]   = (h >> 24) & 0xff;
	x[i+1] = (h >> 16) & 0xff;
	x[i+2] = (h >>  8) & 0xff;
	x[i+3] = h & 0xff;
	x[i+4] = (l >> 24)  & 0xff;
	x[i+5] = (l >> 16)  & 0xff;
	x[i+6] = (l >>  8)  & 0xff;
	x[i+7] = l & 0xff;
}

function crypto_hashblocks_hl(hh, hl, m, n) {
	var wh = new Int32Array(16), wl = new Int32Array(16),
		bh0, bh1, bh2, bh3, bh4, bh5, bh6, bh7,
		bl0, bl1, bl2, bl3, bl4, bl5, bl6, bl7,
		th, tl, i, j, h, l, a, b, c, d;

	var ah0 = hh[0],
		ah1 = hh[1],
		ah2 = hh[2],
		ah3 = hh[3],
		ah4 = hh[4],
		ah5 = hh[5],
		ah6 = hh[6],
		ah7 = hh[7],

		al0 = hl[0],
		al1 = hl[1],
		al2 = hl[2],
		al3 = hl[3],
		al4 = hl[4],
		al5 = hl[5],
		al6 = hl[6],
		al7 = hl[7];

	var pos = 0;
	while (n >= 128) {
		for (i = 0; i < 16; i++) {
		j = 8 * i + pos;
		wh[i] = (m[j+0] << 24) | (m[j+1] << 16) | (m[j+2] << 8) | m[j+3];
		wl[i] = (m[j+4] << 24) | (m[j+5] << 16) | (m[j+6] << 8) | m[j+7];
		}
		for (i = 0; i < 80; i++) {
		bh0 = ah0;
		bh1 = ah1;
		bh2 = ah2;
		bh3 = ah3;
		bh4 = ah4;
		bh5 = ah5;
		bh6 = ah6;
		bh7 = ah7;

		bl0 = al0;
		bl1 = al1;
		bl2 = al2;
		bl3 = al3;
		bl4 = al4;
		bl5 = al5;
		bl6 = al6;
		bl7 = al7;

		// add
		h = ah7;
		l = al7;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		// Sigma1
		h = ((ah4 >>> 14) | (al4 << (32-14))) ^ ((ah4 >>> 18) | (al4 << (32-18))) ^ ((al4 >>> (41-32)) | (ah4 << (32-(41-32))));
		l = ((al4 >>> 14) | (ah4 << (32-14))) ^ ((al4 >>> 18) | (ah4 << (32-18))) ^ ((ah4 >>> (41-32)) | (al4 << (32-(41-32))));

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		// Ch
		h = (ah4 & ah5) ^ (~ah4 & ah6);
		l = (al4 & al5) ^ (~al4 & al6);

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		// K
		h = K[i*2];
		l = K[i*2+1];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		// w
		h = wh[i%16];
		l = wl[i%16];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		th = c & 0xffff | d << 16;
		tl = a & 0xffff | b << 16;

		// add
		h = th;
		l = tl;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		// Sigma0
		h = ((ah0 >>> 28) | (al0 << (32-28))) ^ ((al0 >>> (34-32)) | (ah0 << (32-(34-32)))) ^ ((al0 >>> (39-32)) | (ah0 << (32-(39-32))));
		l = ((al0 >>> 28) | (ah0 << (32-28))) ^ ((ah0 >>> (34-32)) | (al0 << (32-(34-32)))) ^ ((ah0 >>> (39-32)) | (al0 << (32-(39-32))));

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		// Maj
		h = (ah0 & ah1) ^ (ah0 & ah2) ^ (ah1 & ah2);
		l = (al0 & al1) ^ (al0 & al2) ^ (al1 & al2);

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		bh7 = (c & 0xffff) | (d << 16);
		bl7 = (a & 0xffff) | (b << 16);

		// add
		h = bh3;
		l = bl3;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = th;
		l = tl;

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		bh3 = (c & 0xffff) | (d << 16);
		bl3 = (a & 0xffff) | (b << 16);

		ah1 = bh0;
		ah2 = bh1;
		ah3 = bh2;
		ah4 = bh3;
		ah5 = bh4;
		ah6 = bh5;
		ah7 = bh6;
		ah0 = bh7;

		al1 = bl0;
		al2 = bl1;
		al3 = bl2;
		al4 = bl3;
		al5 = bl4;
		al6 = bl5;
		al7 = bl6;
		al0 = bl7;

		if (i%16 === 15) {
			for (j = 0; j < 16; j++) {
			// add
			h = wh[j];
			l = wl[j];

			a = l & 0xffff; b = l >>> 16;
			c = h & 0xffff; d = h >>> 16;

			h = wh[(j+9)%16];
			l = wl[(j+9)%16];

			a += l & 0xffff; b += l >>> 16;
			c += h & 0xffff; d += h >>> 16;

			// sigma0
			th = wh[(j+1)%16];
			tl = wl[(j+1)%16];
			h = ((th >>> 1) | (tl << (32-1))) ^ ((th >>> 8) | (tl << (32-8))) ^ (th >>> 7);
			l = ((tl >>> 1) | (th << (32-1))) ^ ((tl >>> 8) | (th << (32-8))) ^ ((tl >>> 7) | (th << (32-7)));

			a += l & 0xffff; b += l >>> 16;
			c += h & 0xffff; d += h >>> 16;

			// sigma1
			th = wh[(j+14)%16];
			tl = wl[(j+14)%16];
			h = ((th >>> 19) | (tl << (32-19))) ^ ((tl >>> (61-32)) | (th << (32-(61-32)))) ^ (th >>> 6);
			l = ((tl >>> 19) | (th << (32-19))) ^ ((th >>> (61-32)) | (tl << (32-(61-32)))) ^ ((tl >>> 6) | (th << (32-6)));

			a += l & 0xffff; b += l >>> 16;
			c += h & 0xffff; d += h >>> 16;

			b += a >>> 16;
			c += b >>> 16;
			d += c >>> 16;

			wh[j] = (c & 0xffff) | (d << 16);
			wl[j] = (a & 0xffff) | (b << 16);
			}
		}
		}

		// add
		h = ah0;
		l = al0;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[0];
		l = hl[0];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[0] = ah0 = (c & 0xffff) | (d << 16);
		hl[0] = al0 = (a & 0xffff) | (b << 16);

		h = ah1;
		l = al1;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[1];
		l = hl[1];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[1] = ah1 = (c & 0xffff) | (d << 16);
		hl[1] = al1 = (a & 0xffff) | (b << 16);

		h = ah2;
		l = al2;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[2];
		l = hl[2];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[2] = ah2 = (c & 0xffff) | (d << 16);
		hl[2] = al2 = (a & 0xffff) | (b << 16);

		h = ah3;
		l = al3;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[3];
		l = hl[3];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[3] = ah3 = (c & 0xffff) | (d << 16);
		hl[3] = al3 = (a & 0xffff) | (b << 16);

		h = ah4;
		l = al4;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[4];
		l = hl[4];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[4] = ah4 = (c & 0xffff) | (d << 16);
		hl[4] = al4 = (a & 0xffff) | (b << 16);

		h = ah5;
		l = al5;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[5];
		l = hl[5];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[5] = ah5 = (c & 0xffff) | (d << 16);
		hl[5] = al5 = (a & 0xffff) | (b << 16);

		h = ah6;
		l = al6;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[6];
		l = hl[6];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[6] = ah6 = (c & 0xffff) | (d << 16);
		hl[6] = al6 = (a & 0xffff) | (b << 16);

		h = ah7;
		l = al7;

		a = l & 0xffff; b = l >>> 16;
		c = h & 0xffff; d = h >>> 16;

		h = hh[7];
		l = hl[7];

		a += l & 0xffff; b += l >>> 16;
		c += h & 0xffff; d += h >>> 16;

		b += a >>> 16;
		c += b >>> 16;
		d += c >>> 16;

		hh[7] = ah7 = (c & 0xffff) | (d << 16);
		hl[7] = al7 = (a & 0xffff) | (b << 16);

		pos += 128;
		n -= 128;
	}

	return n;
	}

	function crypto_hash(out, m, n) {
	var hh = new Int32Array(8),
		hl = new Int32Array(8),
		x = new Uint8Array(256),
		i, b = n;

	hh[0] = 0x6a09e667;
	hh[1] = 0xbb67ae85;
	hh[2] = 0x3c6ef372;
	hh[3] = 0xa54ff53a;
	hh[4] = 0x510e527f;
	hh[5] = 0x9b05688c;
	hh[6] = 0x1f83d9ab;
	hh[7] = 0x5be0cd19;

	hl[0] = 0xf3bcc908;
	hl[1] = 0x84caa73b;
	hl[2] = 0xfe94f82b;
	hl[3] = 0x5f1d36f1;
	hl[4] = 0xade682d1;
	hl[5] = 0x2b3e6c1f;
	hl[6] = 0xfb41bd6b;
	hl[7] = 0x137e2179;

	crypto_hashblocks_hl(hh, hl, m, n);
	n %= 128;

	for (i = 0; i < n; i++) x[i] = m[b-n+i];
	x[n] = 128;

	n = 256-128*(n<112?1:0);
	x[n-9] = 0;
	ts64(x, n-8,  (b / 0x20000000) | 0, b << 3);
	crypto_hashblocks_hl(hh, hl, x, n);

	for (i = 0; i < 8; i++) ts64(out, 8*i, hh[i], hl[i]);

	return 0;
}

module.exports = function(msg) {
	var h = new Uint8Array(crypto_hash_BYTES);
	crypto_hash(h, msg, msg.length);
	return h;
};