3680695a69
Rename resources to dist. Eliminate keyring bundle and expose keyring class in openpgp module. Add mochaTest grunt task to run node server-side tests. Add node_pack grunt task to create npm package into dist and install it for testing. Add node_store config property which specifies location of localStorage emulation when using node. Add repository info to package.json. Move util.js to src directory from util since it is the only file there. Rename class properties in openpgp to the new class names.
433 lines
16 KiB
HTML
433 lines
16 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<meta charset="utf-8">
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<title>JSDoc: Source: crypto/cipher/twofish.js</title>
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<div id="main">
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<h1 class="page-title">Source: crypto/cipher/twofish.js</h1>
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<section>
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<article>
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<pre class="prettyprint source"><code>/* Modified by Recurity Labs GmbH
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*
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* Cipher.js
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* A block-cipher algorithm implementation on JavaScript
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* See Cipher.readme.txt for further information.
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*
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* Copyright(c) 2009 Atsushi Oka [ http://oka.nu/ ]
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* This script file is distributed under the LGPL
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*
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* ACKNOWLEDGMENT
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*
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* The main subroutines are written by Michiel van Everdingen.
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*
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* Michiel van Everdingen
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* http://home.versatel.nl/MAvanEverdingen/index.html
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*
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* All rights for these routines are reserved to Michiel van Everdingen.
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*
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*/
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/**
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* @module crypto/cipher/twofish
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*/
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//Math
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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var MAXINT = 0xFFFFFFFF;
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function rotb(b, n) {
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return (b << n | b >>> (8 - n)) & 0xFF;
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}
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function rotw(w, n) {
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return (w << n | w >>> (32 - n)) & MAXINT;
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}
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function getW(a, i) {
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return a[i] | a[i + 1] << 8 | a[i + 2] << 16 | a[i + 3] << 24;
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}
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function setW(a, i, w) {
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a.splice(i, 4, w & 0xFF, (w >>> 8) & 0xFF, (w >>> 16) & 0xFF, (w >>> 24) & 0xFF);
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}
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function setWInv(a, i, w) {
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a.splice(i, 4, (w >>> 24) & 0xFF, (w >>> 16) & 0xFF, (w >>> 8) & 0xFF, w & 0xFF);
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}
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function getB(x, n) {
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return (x >>> (n * 8)) & 0xFF;
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}
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function getNrBits(i) {
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var n = 0;
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while (i > 0) {
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n++;
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i >>>= 1;
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}
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return n;
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}
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function getMask(n) {
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return (1 << n) - 1;
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}
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//added 2008/11/13 XXX MUST USE ONE-WAY HASH FUNCTION FOR SECURITY REASON
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function randByte() {
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return Math.floor(Math.random() * 256);
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}
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// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Twofish
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// //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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function createTwofish() {
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//
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var keyBytes = null;
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var dataBytes = null;
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var dataOffset = -1;
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// var dataLength = -1;
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var algorithmName = null;
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// var idx2 = -1;
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//
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algorithmName = "twofish";
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var tfsKey = [];
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var tfsM = [
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[],
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[],
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[],
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[]
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];
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function tfsInit(key) {
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keyBytes = key;
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var i, a, b, c, d, meKey = [],
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moKey = [],
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inKey = [];
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var kLen;
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var sKey = [];
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var f01, f5b, fef;
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var q0 = [
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[8, 1, 7, 13, 6, 15, 3, 2, 0, 11, 5, 9, 14, 12, 10, 4],
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[2, 8, 11, 13, 15, 7, 6, 14, 3, 1, 9, 4, 0, 10, 12, 5]
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];
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var q1 = [
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[14, 12, 11, 8, 1, 2, 3, 5, 15, 4, 10, 6, 7, 0, 9, 13],
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[1, 14, 2, 11, 4, 12, 3, 7, 6, 13, 10, 5, 15, 9, 0, 8]
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];
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var q2 = [
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[11, 10, 5, 14, 6, 13, 9, 0, 12, 8, 15, 3, 2, 4, 7, 1],
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[4, 12, 7, 5, 1, 6, 9, 10, 0, 14, 13, 8, 2, 11, 3, 15]
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];
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var q3 = [
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[13, 7, 15, 4, 1, 2, 6, 14, 9, 11, 3, 0, 8, 5, 12, 10],
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[11, 9, 5, 1, 12, 3, 13, 14, 6, 4, 7, 15, 2, 0, 8, 10]
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];
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var ror4 = [0, 8, 1, 9, 2, 10, 3, 11, 4, 12, 5, 13, 6, 14, 7, 15];
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var ashx = [0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, 5, 14, 7];
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var q = [
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[],
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[]
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];
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var m = [
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[],
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[],
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[],
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[]
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];
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function ffm5b(x) {
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return x ^ (x >> 2) ^ [0, 90, 180, 238][x & 3];
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}
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function ffmEf(x) {
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return x ^ (x >> 1) ^ (x >> 2) ^ [0, 238, 180, 90][x & 3];
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}
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function mdsRem(p, q) {
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var i, t, u;
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for (i = 0; i < 8; i++) {
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t = q >>> 24;
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q = ((q << 8) & MAXINT) | p >>> 24;
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p = (p << 8) & MAXINT;
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u = t << 1;
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if (t & 128) {
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u ^= 333;
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}
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q ^= t ^ (u << 16);
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u ^= t >>> 1;
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if (t & 1) {
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u ^= 166;
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}
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q ^= u << 24 | u << 8;
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}
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return q;
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}
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function qp(n, x) {
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var a, b, c, d;
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a = x >> 4;
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b = x & 15;
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c = q0[n][a ^ b];
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d = q1[n][ror4[b] ^ ashx[a]];
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return q3[n][ror4[d] ^ ashx[c]] << 4 | q2[n][c ^ d];
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}
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function hFun(x, key) {
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var a = getB(x, 0),
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b = getB(x, 1),
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c = getB(x, 2),
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d = getB(x, 3);
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switch (kLen) {
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case 4:
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a = q[1][a] ^ getB(key[3], 0);
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b = q[0][b] ^ getB(key[3], 1);
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c = q[0][c] ^ getB(key[3], 2);
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d = q[1][d] ^ getB(key[3], 3);
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case 3:
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a = q[1][a] ^ getB(key[2], 0);
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b = q[1][b] ^ getB(key[2], 1);
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c = q[0][c] ^ getB(key[2], 2);
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d = q[0][d] ^ getB(key[2], 3);
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case 2:
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a = q[0][q[0][a] ^ getB(key[1], 0)] ^ getB(key[0], 0);
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b = q[0][q[1][b] ^ getB(key[1], 1)] ^ getB(key[0], 1);
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c = q[1][q[0][c] ^ getB(key[1], 2)] ^ getB(key[0], 2);
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d = q[1][q[1][d] ^ getB(key[1], 3)] ^ getB(key[0], 3);
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}
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return m[0][a] ^ m[1][b] ^ m[2][c] ^ m[3][d];
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}
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keyBytes = keyBytes.slice(0, 32);
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i = keyBytes.length;
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while (i != 16 && i != 24 && i != 32)
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keyBytes[i++] = 0;
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for (i = 0; i < keyBytes.length; i += 4) {
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inKey[i >> 2] = getW(keyBytes, i);
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}
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for (i = 0; i < 256; i++) {
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q[0][i] = qp(0, i);
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q[1][i] = qp(1, i);
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}
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for (i = 0; i < 256; i++) {
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f01 = q[1][i];
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f5b = ffm5b(f01);
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fef = ffmEf(f01);
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m[0][i] = f01 + (f5b << 8) + (fef << 16) + (fef << 24);
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m[2][i] = f5b + (fef << 8) + (f01 << 16) + (fef << 24);
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f01 = q[0][i];
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f5b = ffm5b(f01);
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fef = ffmEf(f01);
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m[1][i] = fef + (fef << 8) + (f5b << 16) + (f01 << 24);
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m[3][i] = f5b + (f01 << 8) + (fef << 16) + (f5b << 24);
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}
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kLen = inKey.length / 2;
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for (i = 0; i < kLen; i++) {
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a = inKey[i + i];
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meKey[i] = a;
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b = inKey[i + i + 1];
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moKey[i] = b;
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sKey[kLen - i - 1] = mdsRem(a, b);
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}
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for (i = 0; i < 40; i += 2) {
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a = 0x1010101 * i;
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b = a + 0x1010101;
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a = hFun(a, meKey);
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b = rotw(hFun(b, moKey), 8);
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tfsKey[i] = (a + b) & MAXINT;
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tfsKey[i + 1] = rotw(a + 2 * b, 9);
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}
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for (i = 0; i < 256; i++) {
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a = b = c = d = i;
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switch (kLen) {
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case 4:
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a = q[1][a] ^ getB(sKey[3], 0);
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b = q[0][b] ^ getB(sKey[3], 1);
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c = q[0][c] ^ getB(sKey[3], 2);
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d = q[1][d] ^ getB(sKey[3], 3);
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case 3:
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a = q[1][a] ^ getB(sKey[2], 0);
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b = q[1][b] ^ getB(sKey[2], 1);
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c = q[0][c] ^ getB(sKey[2], 2);
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d = q[0][d] ^ getB(sKey[2], 3);
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case 2:
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tfsM[0][i] = m[0][q[0][q[0][a] ^ getB(sKey[1], 0)] ^ getB(sKey[0], 0)];
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tfsM[1][i] = m[1][q[0][q[1][b] ^ getB(sKey[1], 1)] ^ getB(sKey[0], 1)];
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tfsM[2][i] = m[2][q[1][q[0][c] ^ getB(sKey[1], 2)] ^ getB(sKey[0], 2)];
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tfsM[3][i] = m[3][q[1][q[1][d] ^ getB(sKey[1], 3)] ^ getB(sKey[0], 3)];
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}
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}
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}
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function tfsG0(x) {
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return tfsM[0][getB(x, 0)] ^ tfsM[1][getB(x, 1)] ^ tfsM[2][getB(x, 2)] ^ tfsM[3][getB(x, 3)];
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}
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function tfsG1(x) {
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return tfsM[0][getB(x, 3)] ^ tfsM[1][getB(x, 0)] ^ tfsM[2][getB(x, 1)] ^ tfsM[3][getB(x, 2)];
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}
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function tfsFrnd(r, blk) {
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var a = tfsG0(blk[0]);
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var b = tfsG1(blk[1]);
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blk[2] = rotw(blk[2] ^ (a + b + tfsKey[4 * r + 8]) & MAXINT, 31);
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blk[3] = rotw(blk[3], 1) ^ (a + 2 * b + tfsKey[4 * r + 9]) & MAXINT;
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a = tfsG0(blk[2]);
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b = tfsG1(blk[3]);
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blk[0] = rotw(blk[0] ^ (a + b + tfsKey[4 * r + 10]) & MAXINT, 31);
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blk[1] = rotw(blk[1], 1) ^ (a + 2 * b + tfsKey[4 * r + 11]) & MAXINT;
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}
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function tfsIrnd(i, blk) {
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var a = tfsG0(blk[0]);
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var b = tfsG1(blk[1]);
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blk[2] = rotw(blk[2], 1) ^ (a + b + tfsKey[4 * i + 10]) & MAXINT;
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blk[3] = rotw(blk[3] ^ (a + 2 * b + tfsKey[4 * i + 11]) & MAXINT, 31);
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a = tfsG0(blk[2]);
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b = tfsG1(blk[3]);
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blk[0] = rotw(blk[0], 1) ^ (a + b + tfsKey[4 * i + 8]) & MAXINT;
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blk[1] = rotw(blk[1] ^ (a + 2 * b + tfsKey[4 * i + 9]) & MAXINT, 31);
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}
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function tfsClose() {
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tfsKey = [];
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tfsM = [
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[],
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[],
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[],
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[]
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];
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}
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function tfsEncrypt(data, offset) {
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dataBytes = data;
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dataOffset = offset;
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var blk = [getW(dataBytes, dataOffset) ^ tfsKey[0],
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getW(dataBytes, dataOffset + 4) ^ tfsKey[1],
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getW(dataBytes, dataOffset + 8) ^ tfsKey[2],
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getW(dataBytes, dataOffset + 12) ^ tfsKey[3]
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];
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for (var j = 0; j < 8; j++) {
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tfsFrnd(j, blk);
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}
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setW(dataBytes, dataOffset, blk[2] ^ tfsKey[4]);
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setW(dataBytes, dataOffset + 4, blk[3] ^ tfsKey[5]);
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setW(dataBytes, dataOffset + 8, blk[0] ^ tfsKey[6]);
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setW(dataBytes, dataOffset + 12, blk[1] ^ tfsKey[7]);
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dataOffset += 16;
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return dataBytes;
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}
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function tfsDecrypt(data, offset) {
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dataBytes = data;
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dataOffset = offset;
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var blk = [getW(dataBytes, dataOffset) ^ tfsKey[4],
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getW(dataBytes, dataOffset + 4) ^ tfsKey[5],
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getW(dataBytes, dataOffset + 8) ^ tfsKey[6],
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getW(dataBytes, dataOffset + 12) ^ tfsKey[7]
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];
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for (var j = 7; j >= 0; j--) {
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tfsIrnd(j, blk);
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}
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setW(dataBytes, dataOffset, blk[2] ^ tfsKey[0]);
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setW(dataBytes, dataOffset + 4, blk[3] ^ tfsKey[1]);
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setW(dataBytes, dataOffset + 8, blk[0] ^ tfsKey[2]);
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setW(dataBytes, dataOffset + 12, blk[1] ^ tfsKey[3]);
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dataOffset += 16;
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}
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// added by Recurity Labs
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function tfsFinal() {
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return dataBytes;
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}
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return {
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name: "twofish",
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blocksize: 128 / 8,
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open: tfsInit,
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close: tfsClose,
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encrypt: tfsEncrypt,
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decrypt: tfsDecrypt,
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// added by Recurity Labs
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finalize: tfsFinal
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};
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}
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var util = require('../../util.js');
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// added by Recurity Labs
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function TFencrypt(block, key) {
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var block_copy = [].concat(block);
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var tf = createTwofish();
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tf.open(util.str2bin(key), 0);
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var result = tf.encrypt(block_copy, 0);
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tf.close();
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return result;
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}
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function TF(key) {
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this.tf = createTwofish();
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this.tf.open(util.str2bin(key), 0);
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this.encrypt = function(block) {
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return this.tf.encrypt([].concat(block), 0);
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};
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}
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module.exports = TF;
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module.exports.keySize = TF.prototype.keySize = 32;
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module.exports.blockSize = TF.prototype.blockSize = 16;
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</code></pre>
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</article>
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</section>
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</div>
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<nav>
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<h2><a href="index.html">Index</a></h2><h3>Modules</h3><ul><li><a href="module-cleartext.html">cleartext</a></li><li><a href="module-config.html">config</a></li><li><a href="config.html">config/config</a></li><li><a href="localStorage.html">config/localStorage</a></li><li><a href="module-crypto.html">crypto</a></li><li><a href="cfb.html">crypto/cfb</a></li><li><a href="cipher.html">crypto/cipher</a></li><li><a href="aes.html">crypto/cipher/aes</a></li><li><a href="blowfish.html">crypto/cipher/blowfish</a></li><li><a href="cast5.html">crypto/cipher/cast5</a></li><li><a href="des.html">crypto/cipher/des</a></li><li><a href="twofish.html">crypto/cipher/twofish</a></li><li><a href="crypto.html">crypto/crypto</a></li><li><a href="hash.html">crypto/hash</a></li><li><a href="md5.html">crypto/hash/md5</a></li><li><a href="ripe-md.html">crypto/hash/ripe-md</a></li><li><a href="sha.html">crypto/hash/sha</a></li><li><a href="pkcs1.html">crypto/pkcs1</a></li><li><a href="public_key.html">crypto/public_key</a></li><li><a href="dsa.html">crypto/public_key/dsa</a></li><li><a href="elgamal.html">crypto/public_key/elgamal</a></li><li><a href="jsbn.html">crypto/public_key/jsbn</a></li><li><a href="rsa.html">crypto/public_key/rsa</a></li><li><a href="random.html">crypto/random</a></li><li><a href="signature.html">crypto/signature</a></li><li><a href="armor.html">encoding/armor</a></li><li><a href="base64.html">encoding/base64</a></li><li><a href="module-enums.html">enums</a></li><li><a href="module-key.html">key</a></li><li><a href="module-keyring.html">keyring</a></li><li><a href="keyring.html">keyring/keyring</a></li><li><a href="localstore.html">keyring/localstore</a></li><li><a href="module-message.html">message</a></li><li><a href="module-openpgp.html">openpgp</a></li><li><a href="module-packet.html">packet</a></li><li><a href="compressed.html">packet/compressed</a></li><li><a href="literal.html">packet/literal</a></li><li><a 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