diff --git a/tests/unit/security/certificate.t.cpp b/tests/unit/security/certificate.t.cpp
new file mode 100644
index 0000000..f645dbd
--- /dev/null
+++ b/tests/unit/security/certificate.t.cpp
@@ -0,0 +1,282 @@
+/* -*- 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.
+ *
+ * @author Zhiyi Zhang <dreamerbarrychang@gmail.com>
+ */
+
+#include "ndn-cxx/security/certificate.hpp"
+
+#include "tests/boost-test.hpp"
+#include "tests/unit/unit-test-time-fixture.hpp"
+
+#include <boost/lexical_cast.hpp>
+
+namespace ndn {
+namespace security {
+inline namespace v2 {
+namespace tests {
+
+using namespace ndn::tests;
+
+BOOST_AUTO_TEST_SUITE(Security)
+BOOST_FIXTURE_TEST_SUITE(TestCertificate, UnitTestTimeFixture)
+
+const uint8_t PUBLIC_KEY[] = {
+  0x30, 0x81, 0x9d, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
+  0x01, 0x05, 0x00, 0x03, 0x81, 0x8b, 0x00, 0x30, 0x81, 0x87, 0x02, 0x81, 0x81, 0x00, 0x9e,
+  0x06, 0x3e, 0x47, 0x85, 0xb2, 0x34, 0x37, 0xaa, 0x85, 0x47, 0xac, 0x03, 0x24, 0x83, 0xb5,
+  0x9c, 0xa8, 0x05, 0x3a, 0x24, 0x1e, 0xeb, 0x89, 0x01, 0xbb, 0xe9, 0x9b, 0xb2, 0xc3, 0x22,
+  0xac, 0x68, 0xe3, 0xf0, 0x6c, 0x02, 0xce, 0x68, 0xa6, 0xc4, 0xd0, 0xa7, 0x06, 0x90, 0x9c,
+  0xaa, 0x1b, 0x08, 0x1d, 0x8b, 0x43, 0x9a, 0x33, 0x67, 0x44, 0x6d, 0x21, 0xa3, 0x1b, 0x88,
+  0x9a, 0x97, 0x5e, 0x59, 0xc4, 0x15, 0x0b, 0xd9, 0x2c, 0xbd, 0x51, 0x07, 0x61, 0x82, 0xad,
+  0xc1, 0xb8, 0xd7, 0xbf, 0x9b, 0xcf, 0x7d, 0x24, 0xc2, 0x63, 0xf3, 0x97, 0x17, 0xeb, 0xfe,
+  0x62, 0x25, 0xba, 0x5b, 0x4d, 0x8a, 0xc2, 0x7a, 0xbd, 0x43, 0x8a, 0x8f, 0xb8, 0xf2, 0xf1,
+  0xc5, 0x6a, 0x30, 0xd3, 0x50, 0x8c, 0xc8, 0x9a, 0xdf, 0xef, 0xed, 0x35, 0xe7, 0x7a, 0x62,
+  0xea, 0x76, 0x7c, 0xbb, 0x08, 0x26, 0xc7, 0x02, 0x01, 0x11
+};
+
+const uint8_t SIG_INFO[] = {
+  0x16, 0x55, 0x1B, 0x01, 0x01, 0x1C, 0x26, 0x07, 0x24, 0x08, 0x03, 0x6E, 0x64, 0x6E, 0x08, 0x05,
+  0x73, 0x69, 0x74, 0x65, 0x31, 0x08, 0x11, 0x6B, 0x73, 0x6B, 0x2D, 0x32, 0x35, 0x31, 0x36, 0x34,
+  0x32, 0x35, 0x33, 0x37, 0x37, 0x30, 0x39, 0x34, 0x08, 0x03, 0x4B, 0x45, 0x59, 0xFD, 0x00, 0xFD,
+  0x26, 0xFD, 0x00, 0xFE, 0x0F, 0x32, 0x30, 0x31, 0x35, 0x30, 0x38, 0x31, 0x34, 0x54, 0x32, 0x32,
+  0x33, 0x37, 0x33, 0x39, 0xFD, 0x00, 0xFF, 0x0F, 0x32, 0x30, 0x31, 0x35, 0x30, 0x38, 0x31, 0x38,
+  0x54, 0x32, 0x32, 0x33, 0x37, 0x33, 0x38
+};
+
+const uint8_t SIG_VALUE[] = {
+  0x2f, 0xd6, 0xf1, 0x6e, 0x80, 0x6f, 0x10, 0xbe, 0xb1, 0x6f, 0x3e, 0x31, 0xec, 0xe3, 0xb9, 0xea,
+  0x83, 0x30, 0x40, 0x03, 0xfc, 0xa0, 0x13, 0xd9, 0xb3, 0xc6, 0x25, 0x16, 0x2d, 0xa6, 0x58, 0x41,
+  0x69, 0x62, 0x56, 0xd8, 0xb3, 0x6a, 0x38, 0x76, 0x56, 0xea, 0x61, 0xb2, 0x32, 0x70, 0x1c, 0xb6,
+  0x4d, 0x10, 0x1d, 0xdc, 0x92, 0x8e, 0x52, 0xa5, 0x8a, 0x1d, 0xd9, 0x96, 0x5e, 0xc0, 0x62, 0x0b,
+  0xcf, 0x3a, 0x9d, 0x7f, 0xca, 0xbe, 0xa1, 0x41, 0x71, 0x85, 0x7a, 0x8b, 0x5d, 0xa9, 0x64, 0xd6,
+  0x66, 0xb4, 0xe9, 0x8d, 0x0c, 0x28, 0x43, 0xee, 0xa6, 0x64, 0xe8, 0x55, 0xf6, 0x1c, 0x19, 0x0b,
+  0xef, 0x99, 0x25, 0x1e, 0xdc, 0x78, 0xb3, 0xa7, 0xaa, 0x0d, 0x14, 0x58, 0x30, 0xe5, 0x37, 0x6a,
+  0x6d, 0xdb, 0x56, 0xac, 0xa3, 0xfc, 0x90, 0x7a, 0xb8, 0x66, 0x9c, 0x0e, 0xf6, 0xb7, 0x64, 0xd1,
+};
+
+const uint8_t CERT[] = {
+  0x06, 0xFD, 0x01, 0xBB, // Data
+    0x07, 0x33, // Name /ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B
+      0x08, 0x03, 0x6E, 0x64, 0x6E,
+      0x08, 0x05, 0x73, 0x69, 0x74, 0x65, 0x31,
+      0x08, 0x03, 0x4B, 0x45, 0x59,
+      0x08, 0x11,
+        0x6B, 0x73, 0x6B, 0x2D, 0x31, 0x34, 0x31, 0x36, 0x34, 0x32, 0x35, 0x33, 0x37, 0x37, 0x30, 0x39,
+        0x34,
+      0x08, 0x04, 0x30, 0x31, 0x32, 0x33,
+      0x08, 0x07, 0xFD, 0x00, 0x00, 0x01, 0x49, 0xC9, 0x8B,
+    0x14, 0x09, // MetaInfo
+      0x18, 0x01, 0x02, // ContentType = Key
+      0x19, 0x04, 0x00, 0x36, 0xEE, 0x80, // FreshnessPeriod = 3600000 ms
+    0x15, 0xA0, // Content
+      0x30, 0x81, 0x9D, 0x30, 0x0D, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x01, 0x01,
+      0x05, 0x00, 0x03, 0x81, 0x8B, 0x00, 0x30, 0x81, 0x87, 0x02, 0x81, 0x81, 0x00, 0x9E, 0x06, 0x3E,
+      0x47, 0x85, 0xB2, 0x34, 0x37, 0xAA, 0x85, 0x47, 0xAC, 0x03, 0x24, 0x83, 0xB5, 0x9C, 0xA8, 0x05,
+      0x3A, 0x24, 0x1E, 0xEB, 0x89, 0x01, 0xBB, 0xE9, 0x9B, 0xB2, 0xC3, 0x22, 0xAC, 0x68, 0xE3, 0xF0,
+      0x6C, 0x02, 0xCE, 0x68, 0xA6, 0xC4, 0xD0, 0xA7, 0x06, 0x90, 0x9C, 0xAA, 0x1B, 0x08, 0x1D, 0x8B,
+      0x43, 0x9A, 0x33, 0x67, 0x44, 0x6D, 0x21, 0xA3, 0x1B, 0x88, 0x9A, 0x97, 0x5E, 0x59, 0xC4, 0x15,
+      0x0B, 0xD9, 0x2C, 0xBD, 0x51, 0x07, 0x61, 0x82, 0xAD, 0xC1, 0xB8, 0xD7, 0xBF, 0x9B, 0xCF, 0x7D,
+      0x24, 0xC2, 0x63, 0xF3, 0x97, 0x17, 0xEB, 0xFE, 0x62, 0x25, 0xBA, 0x5B, 0x4D, 0x8A, 0xC2, 0x7A,
+      0xBD, 0x43, 0x8A, 0x8F, 0xB8, 0xF2, 0xF1, 0xC5, 0x6A, 0x30, 0xD3, 0x50, 0x8C, 0xC8, 0x9A, 0xDF,
+      0xEF, 0xED, 0x35, 0xE7, 0x7A, 0x62, 0xEA, 0x76, 0x7C, 0xBB, 0x08, 0x26, 0xC7, 0x02, 0x01, 0x11,
+    0x16, 0x55, // SignatureInfo
+      0x1B, 0x01, 0x01, // SignatureType
+      0x1C, 0x26, // KeyLocator: /ndn/site1/KEY/ksk-2516425377094
+        0x07, 0x24,
+          0x08, 0x03, 0x6E, 0x64, 0x6E,
+          0x08, 0x05, 0x73, 0x69, 0x74, 0x65, 0x31,
+          0x08, 0x03, 0x4B, 0x45, 0x59,
+          0x08, 0x11,
+            0x6B, 0x73, 0x6B, 0x2D, 0x32, 0x35, 0x31, 0x36, 0x34, 0x32, 0x35, 0x33, 0x37, 0x37, 0x30, 0x39,
+            0x34,
+      0xFD, 0x00, 0xFD, 0x26, // ValidityPeriod: (20150814T223739, 20150818T223738)
+        0xFD, 0x00, 0xFE, 0x0F,
+          0x32, 0x30, 0x31, 0x35, 0x30, 0x38, 0x31, 0x34, 0x54, 0x32, 0x32, 0x33, 0x37, 0x33, 0x39,
+        0xFD, 0x00, 0xFF, 0x0F,
+          0x32, 0x30, 0x31, 0x35, 0x30, 0x38, 0x31, 0x38, 0x54, 0x32, 0x32, 0x33, 0x37, 0x33, 0x38,
+    0x17, 0x80, // SignatureValue
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+      0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+};
+
+static void
+generateFakeSignature(Data& data)
+{
+  SignatureInfo signatureInfo(Block(SIG_INFO, sizeof(SIG_INFO)));
+  signatureInfo.setKeyLocator(KeyLocator(Name("/ndn/site1/KEY/ksk-2516425377094")));
+  signatureInfo.setValidityPeriod(ValidityPeriod(time::fromIsoString("20141111T050000"),
+                                                 time::fromIsoString("20141111T060000")));
+
+  data.setSignatureInfo(signatureInfo);
+  data.setSignatureValue(make_shared<Buffer>(SIG_VALUE, sizeof(SIG_VALUE)));
+}
+
+BOOST_AUTO_TEST_CASE(Construction)
+{
+  Block block(CERT, sizeof(CERT));
+  Certificate certificate(block);
+
+  BOOST_CHECK_EQUAL(certificate.getName(), "/ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B");
+  BOOST_CHECK_EQUAL(certificate.getKeyName(), "/ndn/site1/KEY/ksk-1416425377094");
+  BOOST_CHECK_EQUAL(certificate.getIdentity(), "/ndn/site1");
+  BOOST_CHECK_EQUAL(certificate.getIssuerId(), name::Component("0123"));
+  BOOST_CHECK_EQUAL(certificate.getKeyId(), name::Component("ksk-1416425377094"));
+  BOOST_REQUIRE_EQUAL(certificate.getKeyLocator().has_value(), true);
+  BOOST_CHECK_EQUAL(certificate.getKeyLocator()->getName(), "/ndn/site1/KEY/ksk-2516425377094");
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(certificate.getValidityPeriod()),
+                    "(20150814T223739, 20150818T223738)");
+
+  BOOST_CHECK_THROW(certificate.getExtension(12345), ndn::Data::Error);
+  BOOST_CHECK_NO_THROW(certificate.getPublicKey());
+
+  Data data(block);
+  Certificate certificate2(std::move(data));
+  BOOST_CHECK_EQUAL(certificate, certificate2);
+}
+
+BOOST_AUTO_TEST_CASE(Setters)
+{
+  Certificate certificate;
+  certificate.setName("/ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B");
+  certificate.setFreshnessPeriod(1_h);
+  certificate.setContent(PUBLIC_KEY, sizeof(PUBLIC_KEY));
+  generateFakeSignature(certificate);
+
+  BOOST_CHECK_EQUAL(certificate.getName(), "/ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B");
+  BOOST_CHECK_EQUAL(certificate.getKeyName(), "/ndn/site1/KEY/ksk-1416425377094");
+  BOOST_CHECK_EQUAL(certificate.getIdentity(), "/ndn/site1");
+  BOOST_CHECK_EQUAL(certificate.getIssuerId(), name::Component("0123"));
+  BOOST_CHECK_EQUAL(certificate.getKeyId(), name::Component("ksk-1416425377094"));
+  BOOST_REQUIRE_EQUAL(certificate.getKeyLocator().has_value(), true);
+  BOOST_CHECK_EQUAL(certificate.getKeyLocator()->getName(), "/ndn/site1/KEY/ksk-2516425377094");
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(certificate.getValidityPeriod()),
+                    "(20141111T050000, 20141111T060000)");
+
+  BOOST_CHECK_THROW(certificate.getExtension(12345), ndn::Data::Error);
+  BOOST_CHECK_NO_THROW(certificate.getPublicKey());
+}
+
+BOOST_AUTO_TEST_CASE(ValidityPeriodChecking)
+{
+  Certificate certificate;
+  certificate.setName("/ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B");
+  certificate.setFreshnessPeriod(1_h);
+  certificate.setContent(PUBLIC_KEY, sizeof(PUBLIC_KEY));
+  generateFakeSignature(certificate);
+
+  BOOST_CHECK_EQUAL(certificate.isValid(), true);
+  BOOST_CHECK_EQUAL(certificate.isValid(time::fromIsoString("20141111T045959")), false);
+  BOOST_CHECK_EQUAL(certificate.isValid(time::fromIsoString("20141111T060001")), false);
+}
+
+// This fixture prepares a well-formed certificate. A test case then modifies one of the
+// fields, and verifies the Certificate class correctly identifies the certificate as
+// malformed.
+class InvalidCertFixture
+{
+public:
+  InvalidCertFixture()
+  {
+    Certificate certBase(Block(CERT, sizeof(CERT)));
+    BOOST_CHECK_NO_THROW((Certificate(certBase)));
+
+    m_certBase = Data(certBase);
+    generateFakeSignature(m_certBase);
+
+    BOOST_CHECK_NO_THROW((Certificate(m_certBase)));
+  }
+
+public:
+  Data m_certBase;
+};
+
+BOOST_FIXTURE_TEST_CASE(InvalidName, InvalidCertFixture)
+{
+  Data data(m_certBase);
+  data.setName("/ndn/site1/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B");
+  generateFakeSignature(data);
+
+  BOOST_CHECK_THROW((Certificate(data)), Certificate::Error);
+  BOOST_CHECK_THROW((Certificate(std::move(data))), Certificate::Error);
+}
+
+BOOST_FIXTURE_TEST_CASE(InvalidType, InvalidCertFixture)
+{
+  Data data(m_certBase);
+  data.setContentType(tlv::ContentType_Blob);
+  generateFakeSignature(data);
+
+  BOOST_CHECK_THROW((Certificate(data)), Certificate::Error);
+  BOOST_CHECK_THROW((Certificate(std::move(data))), Certificate::Error);
+}
+
+BOOST_FIXTURE_TEST_CASE(EmptyContent, InvalidCertFixture)
+{
+  Data data(m_certBase);
+  data.setContent(nullptr, 0);
+  generateFakeSignature(data);
+
+  BOOST_CHECK_THROW((Certificate(data)), Certificate::Error);
+  BOOST_CHECK_THROW((Certificate(std::move(data))), Certificate::Error);
+
+  Certificate cert(m_certBase);
+  cert.setContent(nullptr, 0);
+  generateFakeSignature(cert);
+  BOOST_CHECK_THROW(cert.getPublicKey(), Certificate::Error);
+}
+
+BOOST_AUTO_TEST_CASE(PrintCertificateInfo)
+{
+  const std::string expectedCertificateInfo = std::string(R"INFO(
+Certificate name:
+  /ndn/site1/KEY/ksk-1416425377094/0123/%FD%00%00%01I%C9%8B
+Validity:
+  NotBefore: 20150814T223739
+  NotAfter: 20150818T223738
+Public key bits:
+  MIGdMA0GCSqGSIb3DQEBAQUAA4GLADCBhwKBgQCeBj5HhbI0N6qFR6wDJIO1nKgF
+  OiQe64kBu+mbssMirGjj8GwCzmimxNCnBpCcqhsIHYtDmjNnRG0hoxuImpdeWcQV
+  C9ksvVEHYYKtwbjXv5vPfSTCY/OXF+v+YiW6W02Kwnq9Q4qPuPLxxWow01CMyJrf
+  7+0153pi6nZ8uwgmxwIBEQ==
+Signature Information:
+  Signature Type: SignatureSha256WithRsa
+  Key Locator: Name=/ndn/site1/KEY/ksk-2516425377094
+)INFO").substr(1);
+
+  Certificate certificate(Block(CERT, sizeof(CERT)));
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(certificate), expectedCertificateInfo);
+
+  // @todo Check output formats of other certificates
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestCertificate
+BOOST_AUTO_TEST_SUITE_END() // Security
+
+} // namespace tests
+} // inline namespace v2
+} // namespace security
+} // namespace ndn