diff --git a/src/security/tpm/key-handle-osx.hpp b/src/security/tpm/key-handle-osx.hpp
new file mode 100644
index 0000000..4337f0d
--- /dev/null
+++ b/src/security/tpm/key-handle-osx.hpp
@@ -0,0 +1,76 @@
+/* -*- 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.
+ */
+
+#ifndef NDN_SECURITY_TPM_KEY_HANDLE_OSX_HPP
+#define NDN_SECURITY_TPM_KEY_HANDLE_OSX_HPP
+
+#include "key-handle.hpp"
+#include "helper-osx.hpp"
+
+#ifndef NDN_CXX_HAVE_OSX_SECURITY
+#error "This file should not be compiled ..."
+#endif
+
+namespace ndn {
+namespace security {
+namespace tpm {
+
+class BackEndOsx;
+
+/**
+ * @brief Abstraction of TPM key handle used by the TPM based on OS X Keychain Service.
+ */
+class KeyHandleOsx : public KeyHandle
+{
+public:
+  class Error : public KeyHandle::Error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : KeyHandle::Error(what)
+    {
+    }
+  };
+
+public:
+  KeyHandleOsx(const BackEndOsx& impl, const KeyRefOsx& key);
+
+private:
+  ConstBufferPtr
+  doSign(DigestAlgorithm digestAlgorithm, const uint8_t* buf, size_t size) const final;
+
+  ConstBufferPtr
+  doDecrypt(const uint8_t* cipherText, size_t cipherTextLen) const final;
+
+  ConstBufferPtr
+  doDerivePublicKey() const final;
+
+private:
+  const BackEndOsx& m_impl;
+  KeyRefOsx m_key;
+};
+
+} // namespace tpm
+} // namespace security
+} // namespace ndn
+
+#endif // NDN_SECURITY_TPM_KEY_HANDLE_OSX_HPP