Add option to reject unauthenticated ciphers

[shibboleth/cpp-opensaml.git] / saml / saml2 / core / Assertions.h

diff --git a/saml/saml2/core/Assertions.h b/saml/saml2/core/Assertions.h
index 8df4ea9..c878449 100644 (file)
--- a/saml/saml2/core/Assertions.h
+++ b/saml/saml2/core/Assertions.h
@@ -1,17 +1,21 @@
-/*
- *  Copyright 2001-2010 Internet2
+/**
+ * Licensed to the University Corporation for Advanced Internet
+ * Development, Inc. (UCAID) under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * UCAID licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the
+ * License at
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
  *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the License.
  */
 
 /**
@@ -129,13 +133,23 @@ namespace opensaml {
              * <p>The object returned will be unmarshalled around the decrypted DOM element in a
              * new Document owned by the object.
              *
+             * <p>The final boolean parameter is used to enforce a requirement for an authenticated cipher
+             * suite such as AES-GCM or similar. These ciphers include an HMAC or equivalent step that
+             * prevents tampering. Newer applications should set this parameter to true unless the ciphertext
+             * has been independently authenticated, and even in such a case, it is rarely possible to prevent
+             * chosen ciphertext attacks by trusted signers.
+             *
              * @param credResolver  locked resolver supplying decryption keys
              * @param recipient     identifier naming the recipient (the entity performing the decryption)
              * @param criteria      optional external criteria to use with resolver
+             * @param requireAuthenticatedCipher    true iff the bulk data encryption algorithm must be an authenticated cipher
              * @return  the decrypted and unmarshalled object
              */
             virtual xmltooling::XMLObject* decrypt(
-                const xmltooling::CredentialResolver& credResolver, const XMLCh* recipient, xmltooling::CredentialCriteria* criteria=nullptr
+                const xmltooling::CredentialResolver& credResolver,
+                const XMLCh* recipient,
+                xmltooling::CredentialCriteria* criteria=nullptr,
+                bool requireAuthenticatedCipher=false
                 ) const;
         END_XMLOBJECT;