diff --git a/tests/security/test-signature-sha256.cpp b/tests/security/test-signature-sha256.cpp
new file mode 100644
index 0000000..bb1b756
--- /dev/null
+++ b/tests/security/test-signature-sha256.cpp
@@ -0,0 +1,56 @@
+/**
+ * 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 "security/validator.hpp"
+
+#include <cryptopp/base64.h>
+#include <cryptopp/hex.h>
+#include <cryptopp/files.h>
+
+using namespace std;
+namespace ndn {
+
+BOOST_AUTO_TEST_SUITE(TestSignatureSha256)
+
+string SHA256_RESULT("a883dafc480d466ee04e0d6da986bd78eb1fdd2178d04693723da3a8f95d42f4");
+
+BOOST_AUTO_TEST_CASE (Sha256)
+{
+  using namespace CryptoPP;
+
+  char content[6] = "1234\n";
+  ConstBufferPtr buf = crypto::sha256(reinterpret_cast<uint8_t*>(content), 5);
+  string result;
+  StringSource(buf->buf(), buf->size(), true, new HexEncoder(new StringSink(result), false));
+
+  BOOST_REQUIRE_EQUAL(SHA256_RESULT, result);
+}
+
+BOOST_AUTO_TEST_CASE (Signature)
+{
+  using namespace CryptoPP;
+
+  Name name("/TestSignatureSha/Basic");
+  Data testData(name);
+  char content[5] = "1234";
+  testData.setContent(reinterpret_cast<uint8_t*>(content), 5);
+  
+  KeyChainImpl<SecPublicInfoSqlite3, SecTpmFile> keychain;
+  keychain.signWithSha256(testData);
+
+  testData.wireEncode();
+
+  SignatureSha256 sig(testData.getSignature());
+  
+  BOOST_REQUIRE(Validator::verifySignature(testData, sig));
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} // namespace ndn