diff --git a/src/security/nlsr_cse.cpp b/src/security/nlsr_cse.cpp
new file mode 100644
index 0000000..f52fdc9
--- /dev/null
+++ b/src/security/nlsr_cse.cpp
@@ -0,0 +1,18 @@
+#include <ndn-cpp-dev/security/signature-sha256-with-rsa.hpp>
+#include "nlsr_cse.hpp"
+
+namespace nlsr
+{
+    std::ostream&
+    operator <<(std::ostream& os, const NlsrCertificateStoreEntry& ncse)
+    {
+        os<<"------Certificate Entry---------------"<<std::endl;
+        os<<*(ncse.getCert())<<std::endl;
+        ndn::SignatureSha256WithRsa sig(ncse.getCert()->getSignature());
+        ndn::Name keyName=sig.getKeyLocator().getName();
+        os<<"Signee : "<<keyName.toUri()<<std::endl;
+        os<<"Cert Seq Num: "<<ncse.getCertSeqNum()<<std::endl;
+        os<<"Is Signer Verified: "<<ncse.getIsSignerVerified()<<std::endl;
+        return os;
+    }
+}