WB 2.08.x

<?php

/**

 *  Copyright (C) 2012 Werner v.d. Decken <wkl@isteam.de>

 *

 *  This program is free software: you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  This program 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 General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

/**

 * Description of Password

 * *****************************************************************************

 * This class is interfacing the Portable PHP password hashing framework.

 * Version 0.4 / ISTeam Rev. 0.1

 * ISTeam changes: added SHA-256, SHA-512 (2012/10/27 Werner v.d. Decken)

 * *****************************************************************************

 *

 * @category     WBCore

 * @package      WBCore_Security

 * @author       Werner v.d. Decken <wkl@isteam.de>

 * @copyright    Werner v.d. Decken <wkl@isteam.de>

 * @license      http://www.gnu.org/licenses/gpl.html   GPL License

 * @version      1.0.3

 * @revision     $Revision: 1900 $

 * @link         $HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/framework/Password.php $

 * @lastmodified $Date: 2013-04-18 22:05:18 +0200 (Thu, 18 Apr 2013) $

 * @since        Datei vorhanden seit Release 1.2.0

 */

// use \vendors\phpass\PasswordHash;

class Password extends PasswordHash

//class Password extends v_phpass_PasswordHash

{

	const MIN_CRYPT_LOOPS     =  6;  // minimum numbers of loops is 2^6 (64) very, very quick

	const MAX_CRYPT_LOOPS     = 32;  // maximum numbers of loops is 2^32 (4,294,967,296) extremely slow

	const DEFAULT_CRYPT_LOOPS = 12;  // default numbers of loopf is 2^12 (4096) a good average

	const HASH_TYPE_PORTABLE  = true;  // use MD5 only

	const HASH_TYPE_AUTO      = false; // select highest available crypting methode

	const MIN_PW_LENGTH       =   6;

	const MAX_PW_LENGTH       = 100;

	const DEFAULT_PW_LENGTH   =  10;

	const PW_USE_LOWERCHAR    = 0x0001; // use lower chars

	const PW_USE_UPPERCHAR    = 0x0002; // use upper chars

	const PW_USE_DIGITS       = 0x0004; // use numeric digits

	const PW_USE_SPECIAL      = 0x0008; // use special chars

	const PW_USE_ALL          = 0xFFFF; // use all possibilities

/**

 * @param int number of iterations as exponent of 2 (must be between 4 and 31)

 * @param bool TRUE = use MD5 only | FALSE = automatic

 */

	public function __construct($iIterationCountLog2 = self::DEFAULT_CRYPT_LOOPS, $bPortableHashes = self::HASH_TYPE_AUTO)

	{

		parent::__construct($iIterationCountLog2, $bPortableHashes);

	}

/**

 * @param string password to hash

 * @return string generated hash. Null if failed.

 */

	public function HashPassword($sPassword)

	{

		$sNewHash = parent::HashPassword($sPassword);

		return ($sNewHash == '*') ? null : $sNewHash;

	}

/**

 * @param string Password to test against given Hash

 * @param string existing stored hash

 * @return bool true if PW matches the stored hash

 */

	public function CheckPassword($sPassword, $sStoredHash)

	{

		// compatibility layer for deprecated, simple and old MD5 hashes

		if(preg_match('/^[0-9a-f]{32}$/si', $sStoredHash)) {

			return (md5($sPassword) === $sStoredHash);

		}

		return parent::CheckPassword($sPassword, $sStoredHash);

	}

/**

 * generate a case sensitive mnemonic password including numbers and special chars

 * makes no use of confusing characters like 'O' and '0' and so on.

 * @param int length of the generated password. default = DEFAULT_PW_LENGTH

 * @param int defines which elemets are used to generate a password. Default = PW_USE_ALL

 * @return string

 */

	public static function createNew($iLength = self::DEFAULT_PW_LENGTH, $iElements = self::PW_USE_ALL)

	{

		$aChars = array(

			array('b','c','d','f','g','h','j','k','m','n','p','q','r','s','t','v','w','x','y','z'),

			array('B','C','D','F','G','H','J','K','M','N','P','Q','R','S','T','V','W','X','Y','Z'),

			array('a','e','i','o','u'),

			array('A','E','U'),

			array('!','-','@','_',':','.','+','%','/','*')

		);

		$iElements = ($iElements & self::PW_USE_ALL) == 0 ? self::PW_USE_ALL : $iElements;

		if(($iLength < self::MIN_PW_LENGTH) || ($iLength > self::MAX_PW_LENGTH)) {

			$iLength = self::DEFAULT_PW_LENGTH;

		}

	// at first create random arrays of lowerchars and uperchars

	// alternating between vowels and consonants

		$aUpperCase = array();

		$aLowerCase = array();

		for($x = 0; $x < ceil($iLength / 2); $x++) {

			// consonants

			$y = rand(1000, 10000) % sizeof($aChars[0]);

			$aLowerCase[] = $aChars[0][$y];

			$y = rand(1000, 10000) % sizeof($aChars[1]);

			$aUpperCase[] = $aChars[1][$y];

			// vowels

			$y = rand(1000, 10000) % sizeof($aChars[2]);

			$aLowerCase[] = $aChars[2][$y];

			$y = rand(1000, 10000) % sizeof($aChars[3]);

			$aUpperCase[] = $aChars[3][$y];

		}

	// create random arrays of numeric digits 2-9 and  special chars

		$aDigits       = array();

		$aSpecialChars = array();

		for($x = 0; $x < $iLength; $x++) {

			$aDigits[] = (rand(1000, 10000) % 8) + 2;

			$aSpecialChars[] = $aChars[4][rand(1000, 10000) % sizeof($aChars[4])];

		}

		// take string or merge chars depending from $iElements

		$aPassword = array();

		$bMerge = false;

		if($iElements & self::PW_USE_LOWERCHAR) {

			$aPassword = $aLowerCase;

			$bMerge = true;

		}

		if($iElements & self::PW_USE_UPPERCHAR) {

			if($bMerge) {

				$iNumberOfUpperChars = rand(1000, 10000) % ($iLength);

				$aPassword = self::_mergeIntoPassword($aPassword, $aUpperCase, $iNumberOfUpperChars);

			}else {

				$aPassword = $aUpperCase;

				$bMerge = true;

			}

		}

		if($iElements & self::PW_USE_DIGITS) {

			if($bMerge) {

				$iNumberOfDigits = (rand(1000, 10000) % ceil($iLength / 2.5));

				$iNumberOfDigits = $iNumberOfDigits ? $iNumberOfDigits : 1;

				$aPassword = self::_mergeIntoPassword($aPassword, $aDigits, $iNumberOfDigits);

			}else {

				$aPassword = $aDigits;

				$bMerge = true;

			}

		}

		if($iElements & self::PW_USE_SPECIAL) {

			if($bMerge) {

				$iNumberOfSpecialChars = rand(1000, 10000) % ceil($iLength / 5);

				$iNumberOfSpecialChars = $iNumberOfSpecialChars ? $iNumberOfSpecialChars : 1;

				$aPassword = self::_mergeIntoPassword($aPassword, $aSpecialChars, $iNumberOfSpecialChars);

			}else {

				$aPassword = $aSpecialChars;

				$bMerge = true;

			}

		}

		$sPassword = implode('', array_slice($aPassword, 0, $iLength));

		return $sPassword;

	}

/**

 * merges $iCount chars from $aInsert randomly into $aPassword

 * @param array $aPassword

 * @param array $aInsert

 * @param integer $iCount

 * @return array

 */

	private static function _mergeIntoPassword($aPassword, $aInsert, $iCount)

	{

		$aListOfIndexes = array();

		while(sizeof($aListOfIndexes) < $iCount) {

			$x = rand(1000, 10000) % sizeof($aInsert);

			$aListOfIndexes[$x] = $x;

		}

		foreach($aListOfIndexes as $x) {

			$aPassword[$x] = $aInsert[$x];

		}

		return $aPassword;

	}

} // end of class PasswordHash