<?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: EncryptedKey.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_EncryptedKey */require_once 'Zend/InfoCard/Xml/EncryptedKey.php';/** * Zend_InfoCard_Xml_KeyInfo_Interface */require_once 'Zend/InfoCard/Xml/KeyInfo/Interface.php';/** * An object representing an Xml EncryptedKEy block * * @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> */class Zend_InfoCard_Xml_EncryptedKey    extends Zend_InfoCard_Xml_Element    implements Zend_InfoCard_Xml_KeyInfo_Interface{    /**     * Return an instance of the object based on input XML Data     *     * @throws Zend_InfoCard_Xml_Exception     * @param string $xmlData The EncryptedKey XML Block     * @return Zend_InfoCard_Xml_EncryptedKey     */    static public function getInstance($xmlData)    {        if($xmlData instanceof Zend_InfoCard_Xml_Element) {            $strXmlData = $xmlData->asXML();        } else if (is_string($xmlData)) {            $strXmlData = $xmlData;        } else {            throw new Zend_InfoCard_Xml_Exception("Invalid Data provided to create instance");        }        $sxe = simplexml_load_string($strXmlData);        if($sxe->getName() != "EncryptedKey") {            throw new Zend_InfoCard_Xml_Exception("Invalid XML Block provided for EncryptedKey");        }        return simplexml_load_string($strXmlData, "Zend_InfoCard_Xml_EncryptedKey");    }    /**     * Returns the Encyption Method Algorithm URI of the block     *     * @throws Zend_InfoCard_Xml_Exception     * @return string the Encryption method algorithm URI     */    public function getEncryptionMethod()    {        $this->registerXPathNamespace('e', 'http://www.w3.org/2001/04/xmlenc#');        list($encryption_method) = $this->xpath("//e:EncryptionMethod");        if(!($encryption_method instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to find the e:EncryptionMethod KeyInfo 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 Digest Method Algorithm URI used     *     * @throws Zend_InfoCard_Xml_Exception     * @return string the Digest Method Algorithm URI     */    public function getDigestMethod()    {        $this->registerXPathNamespace('e', 'http://www.w3.org/2001/04/xmlenc#');        list($encryption_method) = $this->xpath("//e:EncryptionMethod");        if(!($encryption_method instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to find the e:EncryptionMethod KeyInfo encryption block");        }        if(!($encryption_method->DigestMethod instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to find the DigestMethod block");        }        $dom = self::convertToDOM($encryption_method->DigestMethod);        if(!$dom->hasAttribute('Algorithm')) {            throw new Zend_InfoCard_Xml_Exception("Unable to determine the digest algorithm for the symmetric Keyinfo");        }        return $dom->getAttribute('Algorithm');    }    /**     * Returns the KeyInfo block object     *     * @throws Zend_InfoCard_Xml_Exception     * @return Zend_InfoCard_Xml_KeyInfo_Abstract     */    public function getKeyInfo()    {        if(isset($this->KeyInfo)) {            return Zend_InfoCard_Xml_KeyInfo::getInstance($this->KeyInfo);        }        throw new Zend_InfoCard_Xml_Exception("Unable to locate a KeyInfo block");    }    /**     * Return the encrypted value of the block in base64 format     *     * @throws Zend_InfoCard_Xml_Exception     * @return string The Value of the CipherValue block in base64 format     */    public function getCipherValue()    {        $this->registerXPathNamespace('e', 'http://www.w3.org/2001/04/xmlenc#');        list($cipherdata) = $this->xpath("//e:CipherData");        if(!($cipherdata instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to find the e:CipherData block");        }        $cipherdata->registerXPathNameSpace('enc', 'http://www.w3.org/2001/04/xmlenc#');        list($ciphervalue) = $cipherdata->xpath("//enc:CipherValue");        if(!($ciphervalue instanceof Zend_InfoCard_Xml_Element)) {            throw new Zend_InfoCard_Xml_Exception("Unable to fidn the enc:CipherValue block");        }        return (string)$ciphervalue;    }}