diff -r 000000000000 -r 6474c204b198 security/manager/ssl/public/nsISignatureVerifier.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/manager/ssl/public/nsISignatureVerifier.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+/* An interface for verifying signatures */
+
+#include "nsISupports.idl"
+
+// NB: This isn't actually a principal at all. The naming is just historical.
+interface nsICertificatePrincipal;
+
+[uuid(22870b07-b5ef-481b-9f7f-d41787d4e617)]
+interface nsISignatureVerifier : nsISupports
+{
+   /* Sig Verification Error Codes */
+  const long VERIFY_OK = 0;
+  const long VERIFY_ERROR_UNKNOWN_CA  = -8172; /* -8172 is the error code returned by PSM */
+  
+  nsICertificatePrincipal verifySignature(in string aSignature,
+                                          in unsigned long aSignatureLen,
+                                          in string plaintext,
+                                          in unsigned long plaintextLen,
+                                          out long errorCode);
+};
+
+
+%{C++
+#define SIGNATURE_VERIFIER_CONTRACTID "@mozilla.org/psm;1"
+%}