diff --git a/tests/security/test-keychain.cpp b/tests/security/test-keychain.cpp
new file mode 100644
index 0000000..985ef82
--- /dev/null
+++ b/tests/security/test-keychain.cpp
@@ -0,0 +1,57 @@
+/**
+ * Copyright (C) 2013 Regents of the University of California.
+ * @author: Yingdi Yu <yingdi0@cs.ucla.edu>
+ * See COPYING for copyright and distribution information.
+ */
+
+#include <boost/test/unit_test.hpp>
+
+#include "security/key-chain.hpp"
+#include "util/time.hpp"
+
+using namespace std;
+
+namespace ndn {
+
+BOOST_AUTO_TEST_SUITE(TestKeyChain)
+
+BOOST_AUTO_TEST_CASE (ExportIdentity)
+{
+  KeyChainImpl<SecPublicInfoSqlite3, SecTpmFile> keyChain;
+
+  Name identity(string("/TestKeyChain/ExportIdentity/") + boost::lexical_cast<std::string>(time::now()));
+  keyChain.createIdentity(identity);
+  
+  Block exported = keyChain.exportIdentity(identity, true, "1234");
+
+  Name keyName = keyChain.getDefaultKeyNameForIdentity(identity);
+  Name certName = keyChain.getDefaultCertificateNameForKey(keyName);
+
+  keyChain.deleteIdentity(identity);
+
+  BOOST_REQUIRE(keyChain.doesIdentityExist(identity) == false);
+  BOOST_REQUIRE(keyChain.doesPublicKeyExist(keyName) == false);
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+  BOOST_REQUIRE(keyChain.doesCertificateExist(certName) == false);
+
+  keyChain.importIdentity(exported, true, "1234");
+
+  BOOST_REQUIRE(keyChain.doesIdentityExist(identity));
+  BOOST_REQUIRE(keyChain.doesPublicKeyExist(keyName));
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE));
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC));
+  BOOST_REQUIRE(keyChain.doesCertificateExist(certName));
+
+  keyChain.deleteIdentity(identity);
+
+  BOOST_REQUIRE(keyChain.doesIdentityExist(identity) == false);
+  BOOST_REQUIRE(keyChain.doesPublicKeyExist(keyName) == false);
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(keyChain.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+  BOOST_REQUIRE(keyChain.doesCertificateExist(certName) == false);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace ndn
diff --git a/tests/security/test-sec-tpm-file.cpp b/tests/security/test-sec-tpm-file.cpp
index 55bc983..04adf1f 100644
--- a/tests/security/test-sec-tpm-file.cpp
+++ b/tests/security/test-sec-tpm-file.cpp
@@ -12,6 +12,7 @@
 
 #include "security/key-chain.hpp"
 #include <cryptopp/rsa.h>
+#include <cryptopp/hex.h>
 
 using namespace std;
 namespace ndn {
@@ -85,6 +86,85 @@
   BOOST_CHECK_CLOSE(dev / 256, 0.001, 100);
 
 }
+
+BOOST_AUTO_TEST_CASE (ImportExportKey)
+{
+  using namespace CryptoPP;
+
+  string imported(
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
+
+  string decoded;
+  StringSource source(imported, true, new HexDecoder(new StringSink(decoded))); // StringSource
+
+  SecTpmFile tpm;
+
+  Name keyName("/TestSecTpmFile/ImportKey/ksk-" + boost::lexical_cast<string>(time::now()));
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+  
+  BOOST_REQUIRE_NO_THROW(tpm.importPrivateKeyPkcs8IntoTpm(keyName, reinterpret_cast<const uint8_t*>(decoded.c_str()), decoded.size(), true, "1234"));
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == true);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == true);
+
+  shared_ptr<PublicKey> pubkeyPtr = tpm.getPublicKeyFromTpm(keyName);
+
+  const uint8_t content[] = {0x01, 0x02, 0x03, 0x04};
+  Block sigBlock = tpm.signInTpm(content, sizeof(content), keyName, DIGEST_ALGORITHM_SHA256);
+
+  {
+    using namespace CryptoPP;
+    
+    RSA::PublicKey publicKey;
+    ByteQueue queue;
+    queue.Put(reinterpret_cast<const byte*>(pubkeyPtr->get().buf()), pubkeyPtr->get().size());
+    publicKey.Load(queue);
+
+    RSASS<PKCS1v15, SHA256>::Verifier verifier (publicKey);
+    bool result = verifier.VerifyMessage(content, sizeof(content),
+  					 sigBlock.value(), sigBlock.value_size());
+  
+    BOOST_REQUIRE_EQUAL(result, true);
+  }
+
+  ConstBufferPtr exported = tpm.exportPrivateKeyPkcs8FromTpm(keyName, true, "5678");
+
+  tpm.deleteKeyPairInTpm(keyName);
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+
+  BOOST_REQUIRE(tpm.importPrivateKeyPkcs8IntoTpm(keyName, exported->buf(), exported->size(), true, "5678"));
+  
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == true);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == true);
+  
+  const uint8_t content2[] = {0x05, 0x06, 0x07, 0x08};
+  Block sigBlock2 = tpm.signInTpm(content2, sizeof(content2), keyName, DIGEST_ALGORITHM_SHA256);
+
+  {
+    using namespace CryptoPP;
+    
+    RSA::PublicKey publicKey;
+    ByteQueue queue;
+    queue.Put(reinterpret_cast<const byte*>(pubkeyPtr->get().buf()), pubkeyPtr->get().size());
+    publicKey.Load(queue);
+
+    RSASS<PKCS1v15, SHA256>::Verifier verifier (publicKey);
+    bool result = verifier.VerifyMessage(content2, sizeof(content2),
+  					 sigBlock2.value(), sigBlock2.value_size());
+  
+    BOOST_REQUIRE_EQUAL(result, true);
+  }
+  
+  tpm.deleteKeyPairInTpm(keyName);
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace ndn
diff --git a/tests/security/test-sec-tpm-osx.cpp b/tests/security/test-sec-tpm-osx.cpp
index a0a3bb9..f801018 100644
--- a/tests/security/test-sec-tpm-osx.cpp
+++ b/tests/security/test-sec-tpm-osx.cpp
@@ -85,6 +85,57 @@
   BOOST_CHECK_CLOSE(dev / 256, 0.001, 100);
 
 }
+
+BOOST_AUTO_TEST_CASE (ExportImportKey)
+{
+  using namespace CryptoPP;
+
+  SecTpmOsx tpm;
+
+  Name keyName("/TestSecTpmFile/ExportImportKey/ksk-" + boost::lexical_cast<string>(time::now()));
+  
+  BOOST_CHECK_NO_THROW(tpm.generateKeyPairInTpm(keyName, KEY_TYPE_RSA, 2048));
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == true);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == true);
+
+  ConstBufferPtr exported = tpm.exportPrivateKeyPkcs8FromTpm(keyName, true, "1234");
+  shared_ptr<PublicKey> pubkeyPtr = tpm.getPublicKeyFromTpm(keyName);
+
+  tpm.deleteKeyPairInTpm(keyName);
+
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+
+  BOOST_REQUIRE(tpm.importPrivateKeyPkcs8IntoTpm(keyName, exported->buf(), exported->size(), true, "1234"));
+  
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == true);
+  BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == true);
+
+  const uint8_t content[] = {0x01, 0x02, 0x03, 0x04};
+  Block sigBlock = tpm.signInTpm(content, sizeof(content), keyName, DIGEST_ALGORITHM_SHA256);
+
+  {
+    using namespace CryptoPP;
+    
+    RSA::PublicKey publicKey;
+    ByteQueue queue;
+    queue.Put(reinterpret_cast<const byte*>(pubkeyPtr->get().buf()), pubkeyPtr->get().size());
+    publicKey.Load(queue);
+
+    RSASS<PKCS1v15, SHA256>::Verifier verifier (publicKey);
+    bool result = verifier.VerifyMessage(content, sizeof(content),
+  					 sigBlock.value(), sigBlock.value_size());
+  
+    BOOST_REQUIRE_EQUAL(result, true);
+  }
+  
+  tpm.deleteKeyPairInTpm(keyName);
+  // This is some problem related to Mac OS Key chain, and we will fix it later.
+  // BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PRIVATE) == false);
+  // BOOST_REQUIRE(tpm.doesKeyExistInTpm(keyName, KEY_CLASS_PUBLIC) == false);
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace ndn