saml:SP: Fix decryption of NameID received in logout request.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2616 44740490-163a-0410-bde0-09ae8108e29a

modules/saml/lib/Message.php

@@ -266,7 +266,7 @@ class sspmod_saml_Message {
 	 * @param SimpleSAML_Configuration $dstMetadata  The metadata of the recipient (SP).
 	 * @return XMLSecurityKey  The decryption key.
 	 */
-	private static function getDecryptionKey(SimpleSAML_Configuration $srcMetadata,
+	public static function getDecryptionKey(SimpleSAML_Configuration $srcMetadata,
 		SimpleSAML_Configuration $dstMetadata) {
 
 		$sharedKey = $srcMetadata->getString('sharedkey', NULL);

modules/saml/www/sp/saml2-logout.php

@@ -64,7 +64,7 @@ if ($message instanceof SAML2_LogoutResponse) {
 
 	if ($message->isNameIdEncrypted()) {
 		try {
-			$key = self::getDecryptionKey($idpMetadata, $spMetadata);
+			$key = sspmod_saml_Message::getDecryptionKey($idpMetadata, $spMetadata);
 		} catch (Exception $e) {
 			throw new SimpleSAML_Error_Exception('Error decrypting NameID: ' . $e->getMessage());
 		}