OTPWCalc Sources: src/firefoxos/otpalg/otpalg.js@6a0957738c54 (annotated)

src/firefoxos/otpalg/otpalg.js@6a0957738c54 (annotated)

src/firefoxos/otpalg/otpalg.js

Mon, 22 Apr 2013 22:00:43 +0200

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Mon, 22 Apr 2013 22:00:43 +0200
changeset 0: 6a0957738c54
permissions: -rw-r--r--

Import pristine sources of new project OTPWCalc.

 /*
  * OTPWCalc - One time password challenge response calculator client
  * Copyright © 2013 Michael Schloh von Bennewitz <michael@schloh.com>
  *
  * OTPWCalc is free software: you can redistribute it and/or modify
  * it under the terms of the European Union Public Licence, either
  * version 1.1 of the license, or (at your option) any later version.
  *
  * OTPWCalc is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty
  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
  * the European Union Public License for more details.
  *
  * You should have received a copy of the European Union Public
  * Licence along with OTPWCalc. If not, please refer to
  * <http://joinup.ec.europa.eu/software/page/eupl/>.
  *
  * This file is part of project OTWPCalc, a one time password challenge
  * response calculator client and is found at http://otpwcalc.europalab.com/
  *
  * otpalg.js: ECMA JavaScript implementation
  */
 // <![CDATA[
 function genotpmd4(secret, seed, n) {
     var t = seed.toString().toLowerCase() + secret;
     t = mdxfold(coremd4(str2binl(t), t.length * 8));
     for (var i = n; i > 0; --i) { t = mdxfold(coremd4(t, 64)); }
     return t;
 }
 function genotpmd5(secret, seed, n) {
     var t = seed.toString().toLowerCase() + secret;
     t = mdxfold(coremd5(str2binl(t), t.length * 8));
     for (var i = n; i > 0; --i) { t = mdxfold(coremd5(t, 64)); }
     return t;
 }
 function genotpsha1(secret, seed, n) {
     var t = seed.toString().toLowerCase() + secret;
     t = sha1fold(coresha1(str2binb(t), t.length * 8));
     for (var i = n; i > 0; --i) { t = sha1fold(coresha1(t, 64)); }
     t = invertendian(t, true);
     return t;
 }
 function genotprmd160(secret, seed, n) {
     var t = seed.toString().toLowerCase() + secret;
     t = rmd160fold(corermd160(str2binl(t), t.length * 8));
     for (var i = n; i > 0; --i) { t = rmd160fold(corermd160(t, 64)); }
     return t;
 }
 function genotpmultmd4(secret, seed, n, m) {
     var res = Array(); var lim = n - m + 1;
     var t = seed.toString().toLowerCase() + secret;
     t = mdxfold(coremd4(str2binl(t), t.length * 8));
     if (lim == 0) res[0] = t;
     for (var i = 1; i <= n; ++i) {
 	t = mdxfold(coremd4(t, 64));
 	if (i >= lim) res[i-lim] = t;
     }
     return res;
 }
 function genotpmultmd5(secret, seed, n, m) {
     var res = Array(); var lim = n - m + 1;
     var t = seed.toString().toLowerCase() + secret;
     t = mdxfold(coremd5(str2binl(t), t.length * 8));
     if (lim == 0) res[0] = t;
     for (var i = 1; i <= n; ++i) {
 	t = mdxfold(coremd5(t, 64));
 	if (i >= lim) res[i-lim] = t;
     }
     return res;
 }
 function genotpmultsha1(secret, seed, n, m) {
     var res = Array(); var lim = n - m + 1;
     var t = seed.toString().toLowerCase() + secret;
     t = sha1fold(coresha1(str2binb(t), t.length * 8));
     if (lim == 0) res[0] = invertendian(t, false);
     for (var i = 1; i <= n; ++i) {
 	t = sha1fold(coresha1(t, 64));
 	if (i >= lim) res[i-lim] = invertendian(t, false);
     }
     return res;
 }
 function genotpmultrmd160(secret, seed, n, m) {
     var res = Array(); var lim = n - m + 1;
     var t = seed.toString().toLowerCase() + secret;
     t = rmd160fold(corermd160(str2binl(t), t.length * 8));
     if (lim == 0) res[0] = t;
     for (var i = 1; i <= n; ++i) {
 	t = rmd160fold(corermd160(t, 64));
 	if (i >= lim) res[i-lim] = t;
     }
     return res;
 }
 function mdxfold(h) { return Array(h[0] ^ h[2], h[1] ^ h[3]); }
 function sha1fold(h) {
     h = invertendian(h, true);
     return Array(h[0] ^ h[2] ^ h[4], h[1] ^ h[3]);
 }
 function rmd160fold(h) { return Array(h[0] ^ h[2] ^ h[4], h[1] ^ h[3]); }
 function invertendian(a, inpl) {
     var t = inpl ? a : Array(a.length);
     for (var i = 0; i < a.length; ++i) {
 	var t1 = (a[i] & 0xff) << 24;
 	var t2 = ((a[i] >> 8) & 0xff) << 16;
 	var t3 = ((a[i] >> 16) & 0xff) << 8;
 	var t4 = (a[i] >> 24) & 0xff;
 	t[i] = t1 | t2 | t3 | t4;
     }
     return t;
 }
 function arrtoboth(a) { return arrtosix(a) + " (" + arrtohex(a) + ")"; }
 function arrtohex(a) {
     var s = "";
     for (var i = 0; i < 2; ++i) {
 	for (var j = 0; j < 4; ++j) {
 	    var t = (a[i] >> (8*j)) & 0xff;
 	    t = t.toString(16).toUpperCase();
 	    s += (t.length == 1) ? ('0' + t) : t; // 1 octet = 2 hex digits
 	    if (j % 2 == 1) s += ' ';
 	}
     }
     return s.substr(0, s.length-1); // drop the last space
 }
 function arrtosix(h) {
     var s = "";
     var parity = 0;
     for (var i = 0; i < 2; ++i) {
 	for (var j = 0; j < 32; j += 2) {
 	    parity += (h[i] >> j) & 0x3;
 	}
     }
     var ind;
     ind = (h[0] & 0xff) << 3;
     ind |= (h[0] >> 13) & 0x7;
     s += words[ind] + " ";
     ind = ((h[0] >> 8) & 0x1f) << 6;
     ind |= (h[0] >> 18) & 0x3f;
     s += words[ind] + " ";
     ind = ((h[0] >> 16) & 0x3) << 9;
     ind |= ((h[0] >> 24) & 0xff) << 1;
     ind |= (h[1] >> 7) & 0x1;
     s += words[ind] + " ";
     ind = (h[1] & 0x7f) << 4;
     ind |= (h[1] >> 12) & 0xf;
     s += words[ind] + " ";
     ind = ((h[1] >> 8) & 0xf) << 7;
     ind |= (h[1] >> 17) & 0x7f;
     s += words[ind] + " ";
     ind = ((h[1] >> 16) & 0x1) << 10;
     ind |= ((h[1] >> 24) & 0xff) << 2;
     ind |= (parity & 0x03);
     s += words[ind];
     return s;
 }
 // ]]>