New file |
0,0 → 1,66 |
<?php |
/** |
* PHPExcel |
* |
* Copyright (c) 2006 - 2013 PHPExcel |
* |
* This library is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* This library 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 GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with this library; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
* |
* @category PHPExcel |
* @package PHPExcel_Shared |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
* @version ##VERSION##, ##DATE## |
*/ |
|
|
/** |
* PHPExcel_Shared_PasswordHasher |
* |
* @category PHPExcel |
* @package PHPExcel_Shared |
* @copyright Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel) |
*/ |
class PHPExcel_Shared_PasswordHasher |
{ |
/** |
* Create a password hash from a given string. |
* |
* This method is based on the algorithm provided by |
* Daniel Rentz of OpenOffice and the PEAR package |
* Spreadsheet_Excel_Writer by Xavier Noguer <xnoguer@rezebra.com>. |
* |
* @param string $pPassword Password to hash |
* @return string Hashed password |
*/ |
public static function hashPassword($pPassword = '') { |
$password = 0x0000; |
$charPos = 1; // char position |
|
// split the plain text password in its component characters |
$chars = preg_split('//', $pPassword, -1, PREG_SPLIT_NO_EMPTY); |
foreach ($chars as $char) { |
$value = ord($char) << $charPos++; // shifted ASCII value |
$rotated_bits = $value >> 15; // rotated bits beyond bit 15 |
$value &= 0x7fff; // first 15 bits |
$password ^= ($value | $rotated_bits); |
} |
|
$password ^= strlen($pPassword); |
$password ^= 0xCE4B; |
|
return(strtoupper(dechex($password))); |
} |
} |