RIPEMD160.js 7.7 KB
/** @preserve
(c) 2012 by Cédric Mesnil. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 
- Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
import { Hasher } from "./lib/algorithm/Hasher";
import { Word32Array } from "./lib/Word32Array";
// Constants table
const _zl = new Word32Array([
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
    7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
    3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
    1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
    4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13,
]);
const _zr = new Word32Array([
    5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
    6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
    15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
    8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
    12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11,
]);
const _sl = new Word32Array([
    11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
    7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
    11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
    11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
    9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6,
]);
const _sr = new Word32Array([
    8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
    9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
    9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
    15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
    8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11,
]);
const _hl = new Word32Array([0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E]);
const _hr = new Word32Array([0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000]);
function f1(x, y, z) {
    return ((x) ^ (y) ^ (z));
}
function f2(x, y, z) {
    return (((x) & (y)) | ((~x) & (z)));
}
function f3(x, y, z) {
    return (((x) | (~(y))) ^ (z));
}
function f4(x, y, z) {
    return (((x) & (z)) | ((y) & (~(z))));
}
function f5(x, y, z) {
    return ((x) ^ ((y) | (~(z))));
}
function rotl(x, n) {
    return (x << n) | (x >>> (32 - n));
}
export class RIPEMD160 extends Hasher {
    constructor(props) {
        super(props);
        this._hash = new Word32Array([0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]);
        this._props = props;
        if (props && typeof props.hash !== "undefined") {
            this._hash = props.hash.clone();
        }
    }
    _doReset() {
        this._hash = new Word32Array([0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]);
    }
    _doProcessBlock(words, offset) {
        // Swap endian
        for (let i = 0; i < 16; i++) {
            // Shortcuts
            const offsetI = offset + i;
            const wordsOffsetI = words[offsetI];
            // Swap
            words[offsetI] = ((((wordsOffsetI << 8) | (wordsOffsetI >>> 24)) & 0x00ff00ff) |
                (((wordsOffsetI << 24) | (wordsOffsetI >>> 8)) & 0xff00ff00));
        }
        // Shortcut
        const H = this._hash.words;
        const hl = _hl.words;
        const hr = _hr.words;
        const zl = _zl.words;
        const zr = _zr.words;
        const sl = _sl.words;
        const sr = _sr.words;
        // Working variables
        let al;
        let bl;
        let cl;
        let dl;
        let el;
        let ar;
        let br;
        let cr;
        let dr;
        let er;
        ar = al = H[0];
        br = bl = H[1];
        cr = cl = H[2];
        dr = dl = H[3];
        er = el = H[4];
        // Computation
        let t;
        for (let i = 0; i < 80; i += 1) {
            t = (al + words[offset + zl[i]]) | 0;
            if (i < 16) {
                t += f1(bl, cl, dl) + hl[0];
            }
            else if (i < 32) {
                t += f2(bl, cl, dl) + hl[1];
            }
            else if (i < 48) {
                t += f3(bl, cl, dl) + hl[2];
            }
            else if (i < 64) {
                t += f4(bl, cl, dl) + hl[3];
            }
            else { // if (i<80) {
                t += f5(bl, cl, dl) + hl[4];
            }
            t = t | 0;
            t = rotl(t, sl[i]);
            t = (t + el) | 0;
            al = el;
            el = dl;
            dl = rotl(cl, 10);
            cl = bl;
            bl = t;
            t = (ar + words[offset + zr[i]]) | 0;
            if (i < 16) {
                t += f5(br, cr, dr) + hr[0];
            }
            else if (i < 32) {
                t += f4(br, cr, dr) + hr[1];
            }
            else if (i < 48) {
                t += f3(br, cr, dr) + hr[2];
            }
            else if (i < 64) {
                t += f2(br, cr, dr) + hr[3];
            }
            else { // if (i<80) {
                t += f1(br, cr, dr) + hr[4];
            }
            t = t | 0;
            t = rotl(t, sr[i]);
            t = (t + er) | 0;
            ar = er;
            er = dr;
            dr = rotl(cr, 10);
            cr = br;
            br = t;
        }
        // Intermediate hash value
        t = (H[1] + cl + dr) | 0;
        H[1] = (H[2] + dl + er) | 0;
        H[2] = (H[3] + el + ar) | 0;
        H[3] = (H[4] + al + br) | 0;
        H[4] = (H[0] + bl + cr) | 0;
        H[0] = t;
    }
    _doFinalize() {
        // Shortcuts
        const data = this._data;
        const dataWords = data.words;
        const nBitsTotal = this._nBytes * 8;
        const nBitsLeft = data.nSigBytes * 8;
        // Add padding
        dataWords[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32);
        dataWords[(((nBitsLeft + 64) >>> 9) << 4) + 14] = ((((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff) |
            (((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00));
        data.nSigBytes = (dataWords.length + 1) * 4;
        // Hash final blocks
        this._process();
        // Shortcuts
        const hash = this._hash;
        const H = hash.words;
        // Swap endian
        for (let i = 0; i < 5; i++) {
            // Shortcut
            const Hi = H[i];
            // Swap
            H[i] = (((Hi << 8) | (Hi >>> 24)) & 0x00ff00ff) |
                (((Hi << 24) | (Hi >>> 8)) & 0xff00ff00);
        }
        // Return final computed hash
        return hash;
    }
    clone() {
        const props = { hash: this._hash, blockSize: this._blockSize, data: this._data, nBytes: this._nBytes };
        return new RIPEMD160(props);
    }
    static hash(message, props) {
        return new RIPEMD160(props).finalize(message);
    }
}