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142 lines
4.9 KiB
142 lines
4.9 KiB
import { inherits as inherits$0 } from "util";
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import HashBase from "../hash-base";
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'use strict';
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var inherits = { inherits: inherits$0 }.inherits;
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var ARRAY16 = new Array(16);
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var zl = [
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
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3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
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1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
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4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
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];
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var zr = [
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5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
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6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
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15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
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8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
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12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
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];
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var sl = [
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11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
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7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
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11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
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11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
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9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
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];
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var sr = [
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8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
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9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
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9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
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15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
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8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
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];
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var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e];
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var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000];
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function RIPEMD160() {
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HashBase.call(this, 64);
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// state
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this._a = 0x67452301;
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this._b = 0xefcdab89;
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this._c = 0x98badcfe;
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this._d = 0x10325476;
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this._e = 0xc3d2e1f0;
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}
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inherits(RIPEMD160, HashBase);
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RIPEMD160.prototype._update = function () {
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var words = ARRAY16;
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for (var j = 0; j < 16; ++j)
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words[j] = this._block.readInt32LE(j * 4);
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var al = this._a | 0;
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var bl = this._b | 0;
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var cl = this._c | 0;
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var dl = this._d | 0;
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var el = this._e | 0;
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var ar = this._a | 0;
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var br = this._b | 0;
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var cr = this._c | 0;
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var dr = this._d | 0;
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var er = this._e | 0;
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// computation
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for (var i = 0; i < 80; i += 1) {
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var tl;
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var tr;
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if (i < 16) {
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tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i]);
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tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i]);
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}
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else if (i < 32) {
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tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i]);
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tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i]);
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}
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else if (i < 48) {
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tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i]);
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tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i]);
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}
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else if (i < 64) {
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tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i]);
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tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i]);
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}
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else { // if (i<80) {
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tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i]);
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tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i]);
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}
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al = el;
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el = dl;
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dl = rotl(cl, 10);
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cl = bl;
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bl = tl;
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ar = er;
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er = dr;
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dr = rotl(cr, 10);
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cr = br;
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br = tr;
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}
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// update state
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var t = (this._b + cl + dr) | 0;
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this._b = (this._c + dl + er) | 0;
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this._c = (this._d + el + ar) | 0;
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this._d = (this._e + al + br) | 0;
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this._e = (this._a + bl + cr) | 0;
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this._a = t;
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};
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RIPEMD160.prototype._digest = function () {
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// create padding and handle blocks
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this._block[this._blockOffset++] = 0x80;
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if (this._blockOffset > 56) {
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this._block.fill(0, this._blockOffset, 64);
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this._update();
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this._blockOffset = 0;
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}
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this._block.fill(0, this._blockOffset, 56);
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this._block.writeUInt32LE(this._length[0], 56);
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this._block.writeUInt32LE(this._length[1], 60);
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this._update();
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// produce result
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var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20);
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buffer.writeInt32LE(this._a, 0);
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buffer.writeInt32LE(this._b, 4);
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buffer.writeInt32LE(this._c, 8);
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buffer.writeInt32LE(this._d, 12);
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buffer.writeInt32LE(this._e, 16);
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return buffer;
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};
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function rotl(x, n) {
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return (x << n) | (x >>> (32 - n));
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}
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function fn1(a, b, c, d, e, m, k, s) {
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return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0;
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}
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function fn2(a, b, c, d, e, m, k, s) {
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return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0;
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}
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function fn3(a, b, c, d, e, m, k, s) {
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return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0;
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}
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function fn4(a, b, c, d, e, m, k, s) {
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return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0;
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}
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function fn5(a, b, c, d, e, m, k, s) {
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return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0;
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}
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export default RIPEMD160;
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