<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Abstract.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * Zend_InfoCard_Cipher_Pki_Interface

 */

require_once 'Zend/InfoCard/Cipher/Pki/Interface.php';

/**

 * An abstract class for public-key ciphers

 *

 * @category   Zend

 * @package    Zend_InfoCard

 * @subpackage Zend_InfoCard_Cipher

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

abstract class Zend_InfoCard_Cipher_Pki_Adapter_Abstract implements Zend_InfoCard_Cipher_Pki_Interface

{

    /**

     * OAEP Padding public key encryption

     */

    const OAEP_PADDING = 1;

    /**

     * No padding public key encryption

     */

    const NO_PADDING = 2;

    /**

     * The type of padding to use

     *

     * @var integer one of the padding constants in this class

     */

    protected $_padding;

    /**

     * Set the padding of the public key encryption

     *

     * @throws Zend_InfoCard_Cipher_Exception

     * @param integer $padding One of the constnats in this class

     * @return Zend_InfoCard_Pki_Adapter_Abstract

     */

    public function setPadding($padding)

    {

        switch($padding) {

            case self::OAEP_PADDING:

            case self::NO_PADDING:

                $this->_padding = $padding;

                break;

            default:

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

                throw new Zend_InfoCard_Cipher_Exception("Invalid Padding Type Provided");

                break;

        }

        return $this;

    }

    /**

     * Retruns the public-key padding used

     *

     * @return integer One of the padding constants in this class

     */

    public function getPadding()

    {

        return $this->_padding;

    }

}