SAML2: Add support for encrypted private keys for decrypting encrypted assertions.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@737 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/XML/SAML20/AuthnResponse.php

@@ -202,6 +202,9 @@ class SimpleSAML_XML_SAML20_AuthnResponse extends SimpleSAML_XML_AuthnResponse {
 						if ($privatekey === FALSE) {
 							throw new Exception("Private key for decrypting assertion specified but not found for saml20-sp-hosted id: " . $spid . " Filename: " . $spmd['privatekey']);
 						}
+						if(array_key_exists('privatekey_pass', $spmd)) {
+							$objKeyInfo->passphrase = $spmd['privatekey_pass'];
+						}
 						$objKeyInfo->loadKey($privatekey);
 						$key = $objencKey->decryptKey($objKeyInfo);
 					} else {