@fnlb-project/stanza/dist/platform/browser/crypto/MD5.js

Modern XMPP in the browser, with a JSON API

"use strict";
/**
 * This file is derived from prior work.
 *
 * See NOTICE.md for full license text.
 *
 * Derived from:
 * - hash-base, Copyright (c) 2016 Kirill Fomichev
 * - cipher-base, Copyright (c) 2017 crypto-browserify contributors
 * - md5.js, Copyright (c) 2016 Kirill Fomichev
 */
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
// tslint:disable no-bitwise arguments-order
/* istanbul ignore file */
const buffer_1 = require("../buffer");
const Hash_1 = tslib_1.__importDefault(require("./Hash"));
function rotl(x, n) {
    return (x << n) | (x >>> (32 - n));
}
function fnF(a, b, c, d, m, k, s) {
    return (rotl((a + ((b & c) | (~b & d)) + m + k) | 0, s) + b) | 0;
}
function fnG(a, b, c, d, m, k, s) {
    return (rotl((a + ((b & d) | (c & ~d)) + m + k) | 0, s) + b) | 0;
}
function fnH(a, b, c, d, m, k, s) {
    return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0;
}
function fnI(a, b, c, d, m, k, s) {
    return (rotl((a + (c ^ (b | ~d)) + m + k) | 0, s) + b) | 0;
}
class MD5 extends Hash_1.default {
    constructor() {
        super(64, 56, 'le');
        this._a = 0x67452301;
        this._b = 0xefcdab89;
        this._c = 0x98badcfe;
        this._d = 0x10325476;
        this._m = new Array(16);
    }
    _update(B) {
        const M = this._m;
        for (let i = 0; i < 16; ++i) {
            M[i] = B.readInt32LE(i * 4);
        }
        let a = this._a;
        let b = this._b;
        let c = this._c;
        let d = this._d;
        a = fnF(a, b, c, d, M[0], 0xd76aa478, 7);
        d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12);
        c = fnF(c, d, a, b, M[2], 0x242070db, 17);
        b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22);
        a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7);
        d = fnF(d, a, b, c, M[5], 0x4787c62a, 12);
        c = fnF(c, d, a, b, M[6], 0xa8304613, 17);
        b = fnF(b, c, d, a, M[7], 0xfd469501, 22);
        a = fnF(a, b, c, d, M[8], 0x698098d8, 7);
        d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12);
        c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17);
        b = fnF(b, c, d, a, M[11], 0x895cd7be, 22);
        a = fnF(a, b, c, d, M[12], 0x6b901122, 7);
        d = fnF(d, a, b, c, M[13], 0xfd987193, 12);
        c = fnF(c, d, a, b, M[14], 0xa679438e, 17);
        b = fnF(b, c, d, a, M[15], 0x49b40821, 22);
        a = fnG(a, b, c, d, M[1], 0xf61e2562, 5);
        d = fnG(d, a, b, c, M[6], 0xc040b340, 9);
        c = fnG(c, d, a, b, M[11], 0x265e5a51, 14);
        b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20);
        a = fnG(a, b, c, d, M[5], 0xd62f105d, 5);
        d = fnG(d, a, b, c, M[10], 0x02441453, 9);
        c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14);
        b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20);
        a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5);
        d = fnG(d, a, b, c, M[14], 0xc33707d6, 9);
        c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14);
        b = fnG(b, c, d, a, M[8], 0x455a14ed, 20);
        a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5);
        d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9);
        c = fnG(c, d, a, b, M[7], 0x676f02d9, 14);
        b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20);
        a = fnH(a, b, c, d, M[5], 0xfffa3942, 4);
        d = fnH(d, a, b, c, M[8], 0x8771f681, 11);
        c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16);
        b = fnH(b, c, d, a, M[14], 0xfde5380c, 23);
        a = fnH(a, b, c, d, M[1], 0xa4beea44, 4);
        d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11);
        c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16);
        b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23);
        a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4);
        d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11);
        c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16);
        b = fnH(b, c, d, a, M[6], 0x04881d05, 23);
        a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4);
        d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11);
        c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16);
        b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23);
        a = fnI(a, b, c, d, M[0], 0xf4292244, 6);
        d = fnI(d, a, b, c, M[7], 0x432aff97, 10);
        c = fnI(c, d, a, b, M[14], 0xab9423a7, 15);
        b = fnI(b, c, d, a, M[5], 0xfc93a039, 21);
        a = fnI(a, b, c, d, M[12], 0x655b59c3, 6);
        d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10);
        c = fnI(c, d, a, b, M[10], 0xffeff47d, 15);
        b = fnI(b, c, d, a, M[1], 0x85845dd1, 21);
        a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6);
        d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10);
        c = fnI(c, d, a, b, M[6], 0xa3014314, 15);
        b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21);
        a = fnI(a, b, c, d, M[4], 0xf7537e82, 6);
        d = fnI(d, a, b, c, M[11], 0xbd3af235, 10);
        c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15);
        b = fnI(b, c, d, a, M[9], 0xeb86d391, 21);
        this._a = (this._a + a) | 0;
        this._b = (this._b + b) | 0;
        this._c = (this._c + c) | 0;
        this._d = (this._d + d) | 0;
    }
    _hash() {
        const H = buffer_1.Buffer.allocUnsafe(16);
        H.writeInt32LE(this._a, 0);
        H.writeInt32LE(this._b, 4);
        H.writeInt32LE(this._c, 8);
        H.writeInt32LE(this._d, 12);
        return H;
    }
}
exports.default = MD5;