diff -r 000000000000 -r 6474c204b198 security/manager/ssl/public/nsICMSMessage2.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/manager/ssl/public/nsICMSMessage2.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,64 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsISMimeVerificationListener;
+
+[ptr] native UnsignedCharPtr(unsigned char);
+
+/*
+ * This interface is currently not marked scriptable,
+ * because its verification functions are meant to look like those
+ * in nsICMSMessage. At the time the ptr type is eliminated in both 
+ * interfaces, both should be made scriptable.
+ */
+
+[uuid(a99a3203-39e3-45e1-909c-175b0e471c2b)]
+interface nsICMSMessage2 : nsISupports
+{
+  /**
+    * Async version of nsICMSMessage::VerifySignature.
+    * Code will be executed on a background thread and
+    * availability of results will be notified using a 
+    * call to nsISMimeVerificationListener.
+   */
+  void asyncVerifySignature(in nsISMimeVerificationListener listener);
+  
+  /**
+    * Async version of nsICMSMessage::VerifyDetachedSignature.
+    * Code will be executed on a background thread and
+    * availability of results will be notified using a 
+    * call to nsISMimeVerificationListener.
+    *
+    * We are using "native unsigned char" ptr, because the function 
+    * signatures of this one and nsICMSMessage::verifyDetachedSignature 
+    * should be the identical. Cleaning up nsICMSMessages needs to be
+    * postponed, because this async version is needed on MOZILLA_1_8_BRANCH.
+    *
+    * Once both interfaces get cleaned up, the function signature should
+    * look like:
+    *     [array, length_is(aDigestDataLen)]
+    *     in octet aDigestData,
+    *     in unsigned long aDigestDataLen);
+   */
+  void asyncVerifyDetachedSignature(in nsISMimeVerificationListener listener,
+                                     in UnsignedCharPtr aDigestData, 
+                                     in unsigned long aDigestDataLen);
+};
+
+[uuid(56310af6-dffc-48b4-abca-85eae4059064)]
+interface nsISMimeVerificationListener : nsISupports {
+
+  /**
+   *  Notify that results are ready, that have been requested
+   *  using nsICMSMessage2::asyncVerify[Detached]Signature()
+   *
+   *  verificationResultCode matches synchronous result code from
+   *  nsICMSMessage::verify[Detached]Signature
+   */
+  void notify(in nsICMSMessage2 verifiedMessage,
+              in nsresult verificationResultCode);
+};
+