Current File : /home/k/a/r/karenpetzb/www/items/category/Adapter.zip

PK�dH[���Abstract.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Abstract.php 9094 2008-03-30 18:36:55Z thomas $
 */

/**
 * Zend_InfoCard_Cipher_Symmetric_Interface
 */
require_once 'Zend/InfoCard/Cipher/Symmetric/Interface.php';

/**
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
abstract class Zend_InfoCard_Cipher_Symmetric_Adapter_Abstract 
    implements Zend_InfoCard_Cipher_Symmetric_Interface 
{
}
PK�dH[�JI�ccRsa.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Rsa.php 9094 2008-03-30 18:36:55Z thomas $
 */

/**
 * Zend_InfoCard_Cipher_Pki_Adapter_Abstract
 */
require_once 'Zend/InfoCard/Cipher/Pki/Adapter/Abstract.php';

/**
 * Zend_InfoCard_Cipher_Pki_Rsa_Interface
 */
require_once 'Zend/InfoCard/Cipher/Pki/Rsa/Interface.php';

/**
 * RSA Public Key Encryption Cipher Object for the InfoCard component. Relies on OpenSSL
 * to implement the RSA algorithm
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_InfoCard_Cipher_Pki_Adapter_Rsa
    extends Zend_InfoCard_Cipher_Pki_Adapter_Abstract
    implements Zend_InfoCard_Cipher_Pki_Rsa_Interface
{

    /**
     * Object Constructor
     *
     * @param integer $padding The type of Padding to use
     */
    public function __construct($padding = Zend_InfoCard_Cipher_Pki_Adapter_Abstract::NO_PADDING)
    {
        // Can't test this..
        // @codeCoverageIgnoreStart
        if(!extension_loaded('openssl')) {
            throw new Zend_InfoCard_Cipher_Exception("Use of this PKI RSA Adapter requires the openssl extension loaded");
        }
        // @codeCoverageIgnoreEnd

        $this->setPadding($padding);
    }

    /**
     * Decrypts RSA encrypted data using the given private key
     *
     * @throws Zend_InfoCard_Cipher_Exception
     * @param string $encryptedData The encrypted data in binary format
     * @param string $privateKey The private key in binary format
     * @param string $password The private key passphrase
     * @param integer $padding The padding to use during decryption (of not provided object value will be used)
     * @return string The decrypted data
     */
    public function decrypt($encryptedData, $privateKey, $password = null, $padding = null)
    {
        $private_key = openssl_pkey_get_private(array($privateKey, $password));

        if(!$private_key) {
            throw new Zend_InfoCard_Cipher_Exception("Failed to load private key");
        }

        if(!is_null($padding)) {
            try {
                $this->setPadding($padding);
            } catch(Exception $e) {
                openssl_free_key($private_key);
                throw $e;
            }
        }

        switch($this->getPadding()) {
            case self::NO_PADDING:
                $openssl_padding = OPENSSL_NO_PADDING;
                break;
            case self::OAEP_PADDING:
                $openssl_padding = OPENSSL_PKCS1_OAEP_PADDING;
                break;
        }

        $result = openssl_private_decrypt($encryptedData, $decryptedData, $private_key, $openssl_padding);

        openssl_free_key($private_key);

        if(!$result) {
            throw new Zend_InfoCard_Cipher_Exception("Unable to Decrypt Value using provided private key");
        }

        if($this->getPadding() == self::NO_PADDING) {
            $decryptedData = substr($decryptedData, 2);
            $start = strpos($decryptedData, 0) + 1;
            $decryptedData = substr($decryptedData, $start);
        }

        return $decryptedData;
    }
}
PK�vH[0QW��
Interface.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Interface.php 12519 2008-11-10 18:41:24Z alexander $
 */

/**
 * Interface for pagination adapters.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
interface Zend_Paginator_Adapter_Interface extends Countable
{
    /**
     * Returns the total number of rows in the collection.
     *
     * @return integer
     */
    //public function count();
    
    /**
     * Returns an collection of items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return array
     */
    public function getItems($offset, $itemCountPerPage);
}PK�vH[=ŊS��DbSelect.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: DbSelect.php 12287 2008-11-04 21:49:22Z mikaelkael $
 */

/**
 * @see Zend_Paginator_Adapter_Interface
 */
require_once 'Zend/Paginator/Adapter/Interface.php';

/**
 * @see Zend_Db
 */
require_once 'Zend/Db.php';

/**
 * @see Zend_Db_Select
 */
require_once 'Zend/Db/Select.php';

/**
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_Adapter_DbSelect implements Zend_Paginator_Adapter_Interface
{
    /**
     * Name of the row count column
     *
     * @var string
     */
    const ROW_COUNT_COLUMN = 'zend_paginator_row_count';

    /**
     * Database query
     *
     * @var Zend_Db_Select
     */
    protected $_select = null;

    /**
     * Total item count
     *
     * @var integer
     */
    protected $_rowCount = null;

    /**
     * Constructor.
     *
     * @param Zend_Db_Select $select The select query
     */
    public function __construct(Zend_Db_Select $select)
    {
        $this->_select = $select;
    }

    /**
     * Sets the total row count, either directly or through a supplied
     * query.  Without setting this, {@link getPages()} selects the count
     * as a subquery (SELECT COUNT ... FROM (SELECT ...)).  While this
     * yields an accurate count even with queries containing clauses like
     * LIMIT, it can be slow in some circumstances.  For example, in MySQL,
     * subqueries are generally slow when using the InnoDB storage engine.
     * Users are therefore encouraged to profile their queries to find
     * the solution that best meets their needs.
     *
     * @param  Zend_Db_Select|integer $totalRowCount Total row count integer
     *                                               or query
     * @return Zend_Paginator_Adapter_DbSelect $this
     * @throws Zend_Paginator_Exception
     */
    public function setRowCount($rowCount)
    {
        if ($rowCount instanceof Zend_Db_Select) {
            $columns = $rowCount->getPart(Zend_Db_Select::COLUMNS);

            $countColumnPart = $columns[0][1];

            if ($countColumnPart instanceof Zend_Db_Expr) {
                $countColumnPart = $countColumnPart->__toString();
            }

            // The select query can contain only one column, which should be the row count column
            if (false === strpos($countColumnPart, self::ROW_COUNT_COLUMN)) {
                /**
                 * @see Zend_Paginator_Exception
                 */
                require_once 'Zend/Paginator/Exception.php';

                throw new Zend_Paginator_Exception('Row count column not found');
            }

            $result = $rowCount->query(Zend_Db::FETCH_ASSOC)->fetch();

            $this->_rowCount = count($result) > 0 ? $result[self::ROW_COUNT_COLUMN] : 0;
        } else if (is_integer($rowCount)) {
            $this->_rowCount = $rowCount;
        } else {
            /**
             * @see Zend_Paginator_Exception
             */
            require_once 'Zend/Paginator/Exception.php';

            throw new Zend_Paginator_Exception('Invalid row count');
        }

        return $this;
    }

    /**
     * Returns an array of items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return array
     */
    public function getItems($offset, $itemCountPerPage)
    {
        $this->_select->limit($itemCountPerPage, $offset);

        return $this->_select->query()->fetchAll();
    }

    /**
     * Returns the total number of rows in the result set.
     *
     * @return integer
     */
    public function count()
    {
        if ($this->_rowCount === null) {
            $rowCount = clone $this->_select;

            /**
             * The DISTINCT and GROUP BY queries only work when selecting one column.
             * The question is whether any RDBMS supports DISTINCT for multiple columns, without workarounds.
             */
            if (true === $rowCount->getPart(Zend_Db_Select::DISTINCT)) {
                $columnParts = $rowCount->getPart(Zend_Db_Select::COLUMNS);

                $columns = array();

                foreach ($columnParts as $part) {
                    if ($part[1] == '*' || $part[1] instanceof Zend_Db_Expr) {
                        $columns[] = $part[1];
                    } else {
                        $columns[] = $rowCount->getAdapter()->quoteIdentifier($part[1], true);
                    }
                }

                if (count($columns) == 1 && $columns[0] == '*') {
                    $groupPart = null;
                } else {
                    $groupPart = implode(',', $columns);
                }
            } else {
                $groupParts = $rowCount->getPart(Zend_Db_Select::GROUP);

                foreach ($groupParts as &$part) {
                    if (!($part == '*' || $part instanceof Zend_Db_Expr)) {
                        $part = $rowCount->getAdapter()->quoteIdentifier($part, true);
                    }
                }

                $groupPart = implode(',', $groupParts);
            }

            $countPart  = empty($groupPart) ? 'COUNT(*)' : 'COUNT(DISTINCT ' . $groupPart . ')';
            $expression = new Zend_Db_Expr($countPart . ' AS ' . $rowCount->getAdapter()->quoteIdentifier(self::ROW_COUNT_COLUMN));

            $rowCount->__toString(); // Workaround for ZF-3719 and related
            $rowCount->reset(Zend_Db_Select::COLUMNS)
                     ->reset(Zend_Db_Select::ORDER)
                     ->reset(Zend_Db_Select::LIMIT_OFFSET)
                     ->reset(Zend_Db_Select::GROUP)
                     ->reset(Zend_Db_Select::DISTINCT)
                     ->columns($expression);

            $this->setRowCount($rowCount);
        }

        return $this->_rowCount;
    }
}
PK�vH[�����Null.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Null.php 10792 2008-08-08 03:11:03Z mratzloff $
 */

/**
 * @see Zend_Paginator_Adapter_Interface
 */
require_once 'Zend/Paginator/Adapter/Interface.php';

/**
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_Adapter_Null implements Zend_Paginator_Adapter_Interface
{
    /**
     * Item count
     *
     * @var integer
     */
    protected $_count = null;
    
    /**
     * Constructor.
     * 
     * @param array $count Total item count
     */
    public function __construct($count = 0)
    {
        $this->_count = $count;
    }

    /**
     * Returns an array of items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return array
     */
    public function getItems($offset, $itemCountPerPage)
    {
        return array_fill(0, $itemCountPerPage, null);
    }

    /**
     * Returns the total number of rows in the array.
     *
     * @return integer
     */
    public function count()
    {
        return $this->_count;
    }
}PK�vH[�ŻM	Array.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Array.php 10013 2008-07-09 21:08:06Z norm2782 $
 */

/**
 * @see Zend_Paginator_Adapter_Interface
 */
require_once 'Zend/Paginator/Adapter/Interface.php';

/**
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_Adapter_Array implements Zend_Paginator_Adapter_Interface
{
    /**
     * Array
     * 
     * @var array
     */
    protected $_array = null;
    
    /**
     * Item count
     *
     * @var integer
     */
    protected $_count = null;
    
    /**
     * Constructor.
     * 
     * @param array $array Array to paginate
     */
    public function __construct(array $array)
    {
        $this->_array = $array;
        $this->_count = count($array);
    }

    /**
     * Returns an array of items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return array
     */
    public function getItems($offset, $itemCountPerPage)
    {
        return array_slice($this->_array, $offset, $itemCountPerPage);
    }

    /**
     * Returns the total number of rows in the array.
     *
     * @return integer
     */
    public function count()
    {
        return $this->_count;
    }
}PK�vH[	�>�TTDbTableSelect.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: DbTableSelect.php 11735 2008-10-08 14:00:24Z norm2782 $
 */

/**
 * @see Zend_Paginator_Adapter_DbSelect
 */
require_once 'Zend/Paginator/Adapter/DbSelect.php';

/**
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_Adapter_DbTableSelect extends Zend_Paginator_Adapter_DbSelect
{
    /**
     * Returns a Zend_Db_Table_Rowset_Abstract of items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return Zend_Db_Table_Rowset_Abstract
     */
    public function getItems($offset, $itemCountPerPage)
    {
        $this->_select->limit($itemCountPerPage, $offset);
        
        return $this->_select->getTable()->fetchAll($this->_select);
    }
}PK�vH[Q?_

Iterator.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Iterator.php 11222 2008-09-04 03:18:34Z mratzloff $
 */

/**
 * @see Zend_Paginator_Adapter_Interface
 */
require_once 'Zend/Paginator/Adapter/Interface.php';

/**
 * @category   Zend
 * @package    Zend_Paginator
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Paginator_Adapter_Iterator implements Zend_Paginator_Adapter_Interface
{
    /**
     * Iterator which implements Countable
     * 
     * @var Iterator
     */
    protected $_iterator = null;
    
    /**
     * Item count
     *
     * @var integer
     */
    protected $_count = null;

    /**
     * Constructor.
     * 
     * @param  Iterator $iterator Iterator to paginate
     * @throws Zend_Paginator_Exception
     */
    public function __construct(Iterator $iterator)
    {
        if (!$iterator instanceof Countable) {
            /**
             * @see Zend_Paginator_Exception
             */
            require_once 'Zend/Paginator/Exception.php';
            
            throw new Zend_Paginator_Exception('Iterator must implement Countable');
        }

        $this->_iterator = $iterator;
        $this->_count = count($iterator);
    }

    /**
     * Returns an iterator of items for a page, or an empty array.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return LimitIterator|array
     */
    public function getItems($offset, $itemCountPerPage)
    {
        if ($this->_count == 0) {
            return array();
        }

        return new LimitIterator($this->_iterator, $offset, $itemCountPerPage);
    }

    /**
     * Returns the total number of rows in the collection.
     *
     * @return integer
     */
    public function count()
    {
        return $this->_count;
    }
}PK�H[c�ڳee
Aes128cbc.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Aes128cbc.php 9094 2008-03-30 18:36:55Z thomas $
 */

/**
 * Zend_InfoCard_Cipher_Symmetric_Adapter_Aes256cbc
 */
require_once 'Zend/InfoCard/Cipher/Symmetric/Adapter/Aes256cbc.php';

/**
 * Implements AES128 with CBC encryption implemented using the mCrypt extension
 * 
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_InfoCard_Cipher_Symmetric_Adapter_Aes128cbc 
    extends Zend_InfoCard_Cipher_Symmetric_Adapter_Aes256cbc 
{
}
PK�H[��5�VV
Aes256cbc.phpnu&1i�
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Aes256cbc.php 9094 2008-03-30 18:36:55Z thomas $
 */

/**
 * Zend_InfoCard_Cipher_Symmetric_Adapter_Abstract
 */
require_once 'Zend/InfoCard/Cipher/Symmetric/Adapter/Abstract.php';

/**
 * Zend_InfoCard_Cipher_Symmetric_Aes256cbc_Interface
 */
require_once 'Zend/InfoCard/Cipher/Symmetric/Aes256cbc/Interface.php';

/**
 * Zend_InfoCard_Cipher_Exception
 */
require_once 'Zend/InfoCard/Cipher/Exception.php';

/**
 * Implements AES256 with CBC encryption implemented using the mCrypt extension
 *
 * @category   Zend
 * @package    Zend_InfoCard
 * @subpackage Zend_InfoCard_Cipher
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_InfoCard_Cipher_Symmetric_Adapter_Aes256cbc
    extends Zend_InfoCard_Cipher_Symmetric_Adapter_Abstract
    implements Zend_InfoCard_Cipher_Symmetric_Aes256cbc_Interface
{
    /**
     * The MCRYPT Cipher constant for this encryption
     */
    const MCRYPT_CIPHER = MCRYPT_RIJNDAEL_128;

    /**
     * The MCRYPT Mode constant for this encryption
     */
    const MCRYPT_MODE   = MCRYPT_MODE_CBC;

    /**
     * The default length of the IV to use
     */
    const IV_LENGTH     = 16;

    /**
     * The object constructor
     *
     * @throws Zend_InfoCard_Cipher_Exception
     */
    public function __construct()
    {
        // Can't test for this
        // @codeCoverageIgnoreStart
        if(!extension_loaded('mcrypt')) {
            throw new Zend_InfoCard_Cipher_Exception("Use of the AES256CBC Cipher requires the mcrypt extension");
        }
        // @codeCoveregIgnoreEnd
    }

    /**
     * Decrypts data using the AES Algorithm using the mCrypt extension
     *
     * @throws Zend_InfoCard_Cipher_Exception
     * @param string $encryptedData The encrypted data in binary format
     * @param string $decryptionKey The decryption key
     * @param integer $iv_length The IV length to use
     * @return string the decrypted data with any terminating nulls removed
     */
    public function decrypt($encryptedData, $decryptionKey, $iv_length = null)
    {

        $iv_length = is_null($iv_length) ? self::IV_LENGTH : $iv_length;

        $mcrypt_iv = null;

        if($iv_length > 0) {
             $mcrypt_iv = substr($encryptedData, 0, $iv_length);
            $encryptedData = substr($encryptedData, $iv_length);
        }

        $decrypted = mcrypt_decrypt(self::MCRYPT_CIPHER, $decryptionKey, $encryptedData, self::MCRYPT_MODE, $mcrypt_iv);

        if(!$decrypted) {
            throw new Zend_InfoCard_Cipher_Exception("Failed to decrypt data using AES256CBC Algorithm");
        }

        $decryptedLength = strlen($decrypted);
        $paddingLength = substr($decrypted, $decryptedLength -1, 1);
        $decrypted = substr($decrypted, 0, $decryptedLength - ord($paddingLength));

        return rtrim($decrypted, "\0");
    }
}
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