[platal.git] / htdocs / javascript / secure_hash.js

/***************************************************************************\r
 *  Copyright (C) 2003-2011 Polytechnique.org                              *\r
 *  http://opensource.polytechnique.org/                                   *\r
 *                                                                         *\r
 *  This program is free software; you can redistribute it and/or modify   *\r
 *  it under the terms of the GNU General Public License as published by   *\r
 *  the Free Software Foundation; either version 2 of the License, or      *\r
 *  (at your option) any later version.                                    *\r
 *                                                                         *\r
 *  This program is distributed in the hope that it will be useful,        *\r
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *\r
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *\r
 *  GNU General Public License for more details.                           *\r
 *                                                                         *\r
 *  You should have received a copy of the GNU General Public License      *\r
 *  along with this program; if not, write to the Free Software            *\r
 *  Foundation, Inc.,                                                      *\r
 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *\r
 ***************************************************************************/\r
\r
function hash_encrypt(a) {\r
    return hex_sha1(a);\r
}\r
\r
var hexa_h = "0123456789abcdef";\r
\r
function dechex(a) {\r
    return hexa_h.charAt(a);\r
}\r
\r
function hexdec(a) {\r
    return hexa_h.indexOf(a);\r
}\r
\r
function hash_xor(a, b) {\r
    var c,i,j,k;\r
    c = "";\r
    i = a.length;\r
    j = b.length;\r
    if (i < j) {\r
        var d;\r
        d = a; a = b; b = d;\r
        k = i; i = j; j = k;\r
    }\r
    for (k = 0; k < j; k++)\r
        c += dechex(hexdec(a.charAt(k)) ^ hexdec(b.charAt(k)));\r
    for (; k < i; k++)\r
        c += a.charAt(k);\r
    return c;\r
}\r
// vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
Commit	Line	Data
46bde4d1	1	/***************************************************************************\r
12262f13	2	* Copyright (C) 2003-2011 Polytechnique.org *\r
46bde4d1	3	* http://opensource.polytechnique.org/ *\r
	4	* *\r
	5	* This program is free software; you can redistribute it and/or modify *\r
	6	* it under the terms of the GNU General Public License as published by *\r
	7	* the Free Software Foundation; either version 2 of the License, or *\r
	8	* (at your option) any later version. *\r
	9	* *\r
	10	* This program is distributed in the hope that it will be useful, *\r
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of *\r
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *\r
	13	* GNU General Public License for more details. *\r
	14	* *\r
	15	* You should have received a copy of the GNU General Public License *\r
	16	* along with this program; if not, write to the Free Software *\r
	17	* Foundation, Inc., *\r
	18	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *\r
	19	***************************************************************************/\r
	20	\r
46bde4d1	21	function hash_encrypt(a) {\r
	22	return hex_sha1(a);\r
	23	}\r
	24	\r
	25	var hexa_h = "0123456789abcdef";\r
	26	\r
	27	function dechex(a) {\r
	28	return hexa_h.charAt(a);\r
	29	}\r
	30	\r
	31	function hexdec(a) {\r
	32	return hexa_h.indexOf(a);\r
	33	}\r
	34	\r
	35	function hash_xor(a, b) {\r
	36	var c,i,j,k;\r
	37	c = "";\r
	38	i = a.length;\r
	39	j = b.length;\r
	40	if (i < j) {\r
	41	var d;\r
	42	d = a; a = b; b = d;\r
	43	k = i; i = j; j = k;\r
	44	}\r
	45	for (k = 0; k < j; k++)\r
	46	c += dechex(hexdec(a.charAt(k)) ^ hexdec(b.charAt(k)));\r
	47	for (; k < i; k++)\r
	48	c += a.charAt(k);\r
	49	return c;\r
	50	}\r
a14159bf	51	// vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: