diff --git a/tests/unit-tests/security/pib/pib-impl.t.cpp b/tests/unit-tests/security/pib/pib-impl.t.cpp
new file mode 100644
index 0000000..9a0e85f
--- /dev/null
+++ b/tests/unit-tests/security/pib/pib-impl.t.cpp
@@ -0,0 +1,236 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2016 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/pib/pib-memory.hpp"
+#include "security/pib/pib-sqlite3.hpp"
+#include "security/pib/pib.hpp"
+
+#include "boost-test.hpp"
+#include "pib-data-fixture.hpp"
+
+#include <boost/filesystem.hpp>
+#include <boost/mpl/list.hpp>
+
+namespace ndn {
+namespace security {
+namespace tests {
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_AUTO_TEST_SUITE(TestPib)
+BOOST_AUTO_TEST_SUITE(TestPibImpl)
+
+class PibMemoryWrapper
+{
+public:
+  PibMemory impl;
+};
+
+class PibSqlite3Wrapper
+{
+public:
+  PibSqlite3Wrapper()
+    : tmpPath(boost::filesystem::path(UNIT_TEST_CONFIG_PATH) / "DbTest")
+    , impl(tmpPath.c_str())
+  {
+  }
+
+  ~PibSqlite3Wrapper()
+  {
+    boost::filesystem::remove_all(tmpPath);
+  }
+
+public:
+  boost::filesystem::path tmpPath;
+  PibSqlite3 impl;
+};
+
+typedef boost::mpl::list<PibMemoryWrapper,
+                         PibSqlite3Wrapper> PibImpls;
+
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(IdentityManagement, T, PibImpls, PibDataFixture)
+{
+  T wrapper;
+  PibImpl& pibImpl = wrapper.impl;
+
+  // no default setting, throw Error
+  BOOST_CHECK_THROW(pibImpl.getDefaultIdentity(), Pib::Error);
+
+  // check id1, which should not exist
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), false);
+
+  // add id1, should be default
+  pibImpl.addIdentity(id1);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), true);
+  BOOST_CHECK_NO_THROW(pibImpl.getDefaultIdentity());
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultIdentity(), id1);
+
+  // add id2, should not be default
+  pibImpl.addIdentity(id2);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id2), true);
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultIdentity(), id1);
+
+  // set id2 explicitly as default
+  pibImpl.setDefaultIdentity(id2);
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultIdentity(), id2);
+
+  // remove id2, should not have default identity
+  pibImpl.removeIdentity(id2);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id2), false);
+  BOOST_CHECK_THROW(pibImpl.getDefaultIdentity(), Pib::Error);
+
+  // add id2 again, should be default
+  pibImpl.addIdentity(id2);
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultIdentity(), id2);
+
+  // get all identities, should contain id1 and id2
+  std::set<Name> idNames = pibImpl.getIdentities();
+  BOOST_CHECK_EQUAL(idNames.size(), 2);
+  BOOST_CHECK_EQUAL(idNames.count(id1), 1);
+  BOOST_CHECK_EQUAL(idNames.count(id2), 1);
+}
+
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(KeyManagement, T, PibImpls, PibDataFixture)
+{
+  T wrapper;
+  PibImpl& pibImpl = wrapper.impl;
+
+  // no default setting, throw Error
+  BOOST_CHECK_THROW(pibImpl.getDefaultKeyOfIdentity(id1), Pib::Error);
+
+  // check id1Key1, should not exist, neither should id1.
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key1Name.get(-1)), false);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), false);
+
+  // add id1Key1, should be default, id1 should be added implicitly
+  pibImpl.addKey(id1, id1Key1Name.get(-1), id1Key1);
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key1Name.get(-1)), true);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), true);
+  const v1::PublicKey& keyBits = pibImpl.getKeyBits(id1, id1Key1Name.get(-1));
+  BOOST_CHECK_EQUAL_COLLECTIONS(keyBits.get().buf(), keyBits.get().buf() + keyBits.get().size(),
+                                id1Key1.get().buf(), id1Key1.get().buf() + id1Key1.get().size());
+  BOOST_CHECK_NO_THROW(pibImpl.getDefaultKeyOfIdentity(id1));
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultKeyOfIdentity(id1), id1Key1Name.get(-1));
+
+  // add id1Key2, should not be default
+  pibImpl.addKey(id1, id1Key2Name.get(-1), id1Key2);
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key2Name.get(-1)), true);
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultKeyOfIdentity(id1), id1Key1Name.get(-1));
+
+  // set id1Key2 explicitly as default
+  pibImpl.setDefaultKeyOfIdentity(id1, id1Key2Name.get(-1));
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultKeyOfIdentity(id1), id1Key2Name.get(-1));
+
+  // set a non-existing key as default, throw Error
+  BOOST_CHECK_THROW(pibImpl.setDefaultKeyOfIdentity(id1, name::Component("non-existing")),
+                    Pib::Error);
+
+  // remove id1Key2, should not have default key
+  pibImpl.removeKey(id1, id1Key2Name.get(-1));
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key2Name.get(-1)), false);
+  BOOST_CHECK_THROW(pibImpl.getKeyBits(id1, id1Key2Name.get(-1)), Pib::Error);
+  BOOST_CHECK_THROW(pibImpl.getDefaultKeyOfIdentity(id1), Pib::Error);
+
+  // add id1Key2 back, should be default
+  pibImpl.addKey(id1, id1Key2Name.get(-1), id1Key2);
+  BOOST_CHECK_NO_THROW(pibImpl.getKeyBits(id1, id1Key2Name.get(-1)));
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultKeyOfIdentity(id1), id1Key2Name.get(-1));
+
+  // get all the keys: id1Key1 and id1Key2
+  std::set<name::Component> keyNames = pibImpl.getKeysOfIdentity(id1);
+  BOOST_CHECK_EQUAL(keyNames.size(), 2);
+  BOOST_CHECK_EQUAL(keyNames.count(id1Key1Name.get(-1)), 1);
+  BOOST_CHECK_EQUAL(keyNames.count(id1Key2Name.get(-1)), 1);
+
+  // remove id1, should remove all the keys
+  pibImpl.removeIdentity(id1);
+  keyNames = pibImpl.getKeysOfIdentity(id1);
+  BOOST_CHECK_EQUAL(keyNames.size(), 0);
+}
+
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(CertificateManagement, T, PibImpls, PibDataFixture)
+{
+  T wrapper;
+  PibImpl& pibImpl = wrapper.impl;
+
+  // no default setting, throw Error
+  BOOST_CHECK_THROW(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), Pib::Error);
+
+  // check id1Key1Cert1, should not exist, neither should id1 and id1Key1
+  BOOST_CHECK_EQUAL(pibImpl.hasCertificate(id1Key1Cert1.getName()), false);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), false);
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key1Name.get(-1)), false);
+
+  // add id1Key1Cert1, should be default, id1 and id1Key1 should be added implicitly
+  pibImpl.addCertificate(id1Key1Cert1);
+  BOOST_CHECK_EQUAL(pibImpl.hasCertificate(id1Key1Cert1.getName()), true);
+  BOOST_CHECK_EQUAL(pibImpl.hasIdentity(id1), true);
+  BOOST_CHECK_EQUAL(pibImpl.hasKey(id1, id1Key1Name.get(-1)), true);
+  const v1::IdentityCertificate& cert = pibImpl.getCertificate(id1Key1Cert1.getName());
+  BOOST_CHECK_EQUAL_COLLECTIONS(cert.wireEncode().wire(),
+                                cert.wireEncode().wire() + cert.wireEncode().size(),
+                                id1Key1Cert1.wireEncode().wire(),
+                                id1Key1Cert1.wireEncode().wire() + id1Key1Cert1.wireEncode().size());
+  BOOST_CHECK_NO_THROW(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)));
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), id1Key1Cert1);
+
+  // add id1Key1Cert2, should not be default
+  pibImpl.addCertificate(id1Key1Cert2);
+  BOOST_CHECK_EQUAL(pibImpl.hasCertificate(id1Key1Cert2.getName()), true);
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), id1Key1Cert1);
+
+  // set id1Key1Cert2 explicitly as default
+  pibImpl.setDefaultCertificateOfKey(id1, id1Key1Name.get(-1), id1Key1Cert2.getName());
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), id1Key1Cert2);
+
+  // set a non-existing cert as default, throw Error
+  BOOST_CHECK_THROW(pibImpl.setDefaultCertificateOfKey(id1, id1Key1Name.get(-1), Name("/non-existing")),
+                    Pib::Error);
+
+  // remove id1Key1Cert2, should not have default cert
+  pibImpl.removeCertificate(id1Key1Cert2.getName());
+  BOOST_CHECK_EQUAL(pibImpl.hasCertificate(id1Key1Cert2.getName()), false);
+  BOOST_CHECK_THROW(pibImpl.getCertificate(id1Key1Cert2.getName()), Pib::Error);
+  BOOST_CHECK_THROW(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), Pib::Error);
+
+  // add id1Key1Cert2, should be default
+  pibImpl.addCertificate(id1Key1Cert2);
+  BOOST_CHECK_NO_THROW(pibImpl.getCertificate(id1Key1Cert1.getName()));
+  BOOST_CHECK_EQUAL(pibImpl.getDefaultCertificateOfKey(id1, id1Key1Name.get(-1)), id1Key1Cert2);
+
+  // get all certificates: id1Key1Cert1 and id1Key1Cert2
+  std::set<Name> certNames = pibImpl.getCertificatesOfKey(id1, id1Key1Name.get(-1));
+  BOOST_CHECK_EQUAL(certNames.size(), 2);
+  BOOST_CHECK_EQUAL(certNames.count(id1Key1Cert1.getName()), 1);
+  BOOST_CHECK_EQUAL(certNames.count(id1Key1Cert2.getName()), 1);
+
+  // remove id1Key1, should remove all the certs
+  pibImpl.removeKey(id1, id1Key1Name.get(-1));
+  certNames = pibImpl.getCertificatesOfKey(id1, id1Key1Name.get(-1));
+  BOOST_CHECK_EQUAL(certNames.size(), 0);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestPibImpl
+BOOST_AUTO_TEST_SUITE_END() // TestPib
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // namespace security
+} // namespace ndn