diff --git a/tests/unit-tests/security/identity.t.cpp b/tests/unit-tests/security/identity.t.cpp
new file mode 100644
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--- /dev/null
+++ b/tests/unit-tests/security/identity.t.cpp
@@ -0,0 +1,86 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2015 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify 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.
+ *
+ * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#include "security/identity.hpp"
+#include "security/pib.hpp"
+#include "security/in-memory-pib-impl.hpp"
+#include "pib-data-fixture.hpp"
+
+#include "boost-test.hpp"
+
+namespace ndn {
+namespace security {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(SecurityIdentity)
+
+BOOST_FIXTURE_TEST_CASE(ValidityChecking, PibDataFixture)
+{
+  // identity
+  Identity id;
+
+  BOOST_CHECK_EQUAL(static_cast<bool>(id), false);
+  BOOST_CHECK_EQUAL(!id, true);
+
+  if (id)
+    BOOST_CHECK(false);
+  else
+    BOOST_CHECK(true);
+
+  auto pibImpl = make_shared<InMemoryPibImpl>();
+  id = Identity(id1, pibImpl, true);
+
+  BOOST_CHECK_EQUAL(static_cast<bool>(id), true);
+  BOOST_CHECK_EQUAL(!id, false);
+
+  if (id)
+    BOOST_CHECK(true);
+  else
+    BOOST_CHECK(false);
+}
+
+BOOST_FIXTURE_TEST_CASE(TestKeyOperation, PibDataFixture)
+{
+  auto pibImpl = make_shared<InMemoryPibImpl>();
+
+  Identity identity1(id1, pibImpl, true);
+
+  BOOST_CHECK_THROW(identity1.getKey(id1Key1Name.get(-1)), Pib::Error);
+  Key key11 = identity1.addKey(id1Key1, id1Key1Name.get(-1));
+  BOOST_CHECK_NO_THROW(identity1.getKey(id1Key1Name.get(-1)));
+  identity1.removeKey(id1Key1Name.get(-1));
+  BOOST_CHECK_THROW(identity1.getKey(id1Key1Name.get(-1)), Pib::Error);
+
+  BOOST_CHECK_THROW(identity1.getDefaultKey(), Pib::Error);
+  BOOST_REQUIRE_THROW(identity1.setDefaultKey(id1Key1Name.get(-1)), Pib::Error);
+  BOOST_REQUIRE_NO_THROW(identity1.setDefaultKey(id1Key1, id1Key1Name.get(-1)));
+  BOOST_REQUIRE_NO_THROW(identity1.getDefaultKey());
+  BOOST_CHECK_EQUAL(identity1.getDefaultKey().getKeyId(), id1Key1Name.get(-1));
+  identity1.removeKey(id1Key1Name.get(-1));
+  BOOST_CHECK_THROW(identity1.getKey(id1Key1Name.get(-1)), Pib::Error);
+  BOOST_CHECK_THROW(identity1.getDefaultKey(), Pib::Error);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace tests
+} // namespace security
+} // namespace ndn