<?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_Xml * @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 8064 2008-02-16 10:58:39Z thomas $ * @author     John Coggeshall <john@zend.com> *//** * Zend_InfoCard_Xml_Element */require_once 'Zend/InfoCard/Xml/Element.php';/** * Zend_InfoCard_Xml_KeyInfo */require_once 'Zend/InfoCard/Xml/KeyInfo.php';/** * An abstract class representing a generic EncryptedData XML block. This class is extended * into a specific type of EncryptedData XML block (i.e. XmlEnc) as necessary * * @category   Zend * @package    Zend_InfoCard * @subpackage Zend_InfoCard_Xml * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com) * @license    http://framework.zend.com/license/new-bsd     New BSD License * @author     John Coggeshall <john@zend.com> */abstract class Zend_InfoCard_Xml_EncryptedData_Abstract extends Zend_InfoCard_Xml_Element{    /**     * Returns the KeyInfo Block     *     * @return Zend_InfoCard_Xml_KeyInfo_Abstract     */    public function getKeyInfo()    {        return Zend_InfoCard_Xml_KeyInfo::getInstance($this->KeyInfo[0]);    }    /**     * Return the Encryption method used to encrypt the assertion document     * (the symmetric cipher)     *     * @throws Zend_InfoCard_Xml_Exception     * @return string The URI of the Symmetric Encryption Method used     */    public function getEncryptionMethod()    {        /**         * @todo This is pretty hacky unless we can always be confident that the first         * EncryptionMethod block is the correct one (the AES or compariable symetric algorithm)..         * the second is the PK method if provided.         */        list($encryption_method) = $this->xpath("//enc:EncryptionMethod");        if(!($encryption_method instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to find the enc:EncryptionMethod symmetric encryption block");        }        $dom = self::convertToDOM($encryption_method);        if(!$dom->hasAttribute('Algorithm')) {            throw new Zend_InfoCard_Xml_Exception("Unable to determine the encryption algorithm in the Symmetric enc:EncryptionMethod XML block");        }        return $dom->getAttribute('Algorithm');    }    /**     * Returns the value of the encrypted block     *     * @return string the value of the encrypted CipherValue block     */    abstract function getCipherValue();}