diff --git a/tests/unit/security/interest-signer.t.cpp b/tests/unit/security/interest-signer.t.cpp
new file mode 100644
index 0000000..9362c76
--- /dev/null
+++ b/tests/unit/security/interest-signer.t.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2020 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 "ndn-cxx/security/interest-signer.hpp"
+#include "ndn-cxx/security/signing-helpers.hpp"
+
+#include "tests/boost-test.hpp"
+#include "tests/unit/identity-management-time-fixture.hpp"
+
+namespace ndn {
+namespace security {
+namespace tests {
+
+using namespace ndn::tests;
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_FIXTURE_TEST_SUITE(TestInterestSigner, IdentityManagementTimeFixture)
+
+BOOST_AUTO_TEST_CASE(V02)
+{
+  addIdentity("/test");
+
+  InterestSigner signer(m_keyChain);
+  Interest i1 = signer.makeCommandInterest("/hello/world");
+  BOOST_REQUIRE_EQUAL(i1.getName().size(), 6);
+  BOOST_CHECK_EQUAL(i1.getName().at(command_interest::POS_SIG_VALUE).blockFromValue().type(), tlv::SignatureValue);
+  BOOST_CHECK_EQUAL(i1.getName().at(command_interest::POS_SIG_INFO).blockFromValue().type(), tlv::SignatureInfo);
+
+  time::milliseconds timestamp = toUnixTimestamp(time::system_clock::now());
+  BOOST_CHECK_EQUAL(i1.getName().at(command_interest::POS_TIMESTAMP).toNumber(), timestamp.count());
+
+  Interest i2 = signer.makeCommandInterest("/hello/world/!", signingByIdentity("/test"));
+  BOOST_REQUIRE_EQUAL(i2.getName().size(), 7);
+  BOOST_CHECK_EQUAL(i2.getName().at(command_interest::POS_SIG_VALUE).blockFromValue().type(), tlv::SignatureValue);
+  BOOST_CHECK_EQUAL(i2.getName().at(command_interest::POS_SIG_INFO).blockFromValue().type(), tlv::SignatureInfo);
+  BOOST_CHECK_GT(i2.getName().at(command_interest::POS_TIMESTAMP), i1.getName().at(command_interest::POS_TIMESTAMP));
+  BOOST_CHECK_NE(i2.getName().at(command_interest::POS_RANDOM_VAL),
+                 i1.getName().at(command_interest::POS_RANDOM_VAL)); // this sometimes can fail
+
+  advanceClocks(100_s);
+
+  i2 = signer.makeCommandInterest("/hello/world/!");
+  BOOST_CHECK_GT(i2.getName().at(command_interest::POS_TIMESTAMP), i1.getName().at(command_interest::POS_TIMESTAMP));
+}
+
+BOOST_AUTO_TEST_CASE(V03)
+{
+  addIdentity("/test");
+
+  InterestSigner signer(m_keyChain);
+  Interest i1("/hello/world");
+  i1.setCanBePrefix(false);
+  signer.makeSignedInterest(i1);
+  BOOST_CHECK_EQUAL(i1.isSigned(), true);
+  BOOST_REQUIRE_EQUAL(i1.getName().size(), 3);
+  BOOST_REQUIRE(i1.getSignatureInfo());
+
+  BOOST_TEST(*i1.getSignatureInfo()->getTime() == time::system_clock::now());
+
+  Interest i2("/hello/world/!");
+  i2.setCanBePrefix(false);
+  signer.makeSignedInterest(i2, signingByIdentity("/test"));
+  BOOST_CHECK_EQUAL(i2.isSigned(), true);
+  BOOST_REQUIRE_EQUAL(i2.getName().size(), 4);
+  BOOST_REQUIRE(i2.getSignatureInfo());
+
+  BOOST_TEST(*i2.getSignatureInfo()->getTime() > *i1.getSignatureInfo()->getTime());
+  BOOST_TEST(*i2.getSignatureInfo()->getNonce() != *i1.getSignatureInfo()->getNonce());
+
+  advanceClocks(100_s);
+
+  signer.makeSignedInterest(i2);
+  BOOST_CHECK_EQUAL(i2.isSigned(), true);
+
+  BOOST_TEST(*i2.getSignatureInfo()->getTime() == time::system_clock::now());
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestInterestSigner
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // namespace security
+} // namespace ndn