<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License * @version $Id: EncryptedKey.php 20096 2010-01-06 02:05:09Z bkarwin $ */ /** * 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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ 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; } }