security: Add SignatureSha256

Change-Id: Id9a61f898d12a6b289a24adb594471b26d3513d6
diff --git a/src/util/command-interest-validator.hpp b/src/util/command-interest-validator.hpp
index 8c5ecc3..af8c796 100644
--- a/src/util/command-interest-validator.hpp
+++ b/src/util/command-interest-validator.hpp
@@ -116,7 +116,7 @@
     }
   if(inScope == false)
     return onValidationFailed(interest.shared_from_this(), 
-                              "Signer cannot be authorized for the command: " + interest.getName().toUri());
+                              "Signer cannot be authorized for the command: " + keyName.toUri());
 
   //Check if timestamp is valid
   uint64_t timestamp = interestName.get(POS_TIMESTAMP).toNumber();