diff --git a/jni/libzrtp/sources/zrtp/libzrtpcpp/ZrtpPacketConfirm.h b/jni/libzrtp/sources/zrtp/libzrtpcpp/ZrtpPacketConfirm.h
index e3ff85b..283861d 100644
--- a/jni/libzrtp/sources/zrtp/libzrtpcpp/ZrtpPacketConfirm.h
+++ b/jni/libzrtp/sources/zrtp/libzrtpcpp/ZrtpPacketConfirm.h
@@ -1,8 +1,8 @@
 /*
-  Copyright (C) 2006-2010 Werner Dittmann
+  Copyright (C) 2006-2013 Werner Dittmann
 
   This program is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
+  it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
@@ -84,6 +84,11 @@
         /// get the signature length in words
         int32_t getSignatureLength();
 
+        /// Check if packet length makes sense. Confirm packets are 19 words at minumum
+        bool isLengthOk()             {return (getLength() >= 19); }
+
+        bool isSignatureLengthOk();
+
         /// set SAS verified flag
         void setSASFlag()            { confirmHeader->flags |= 0x4; }