diff --git a/src/security/encryption-manager.hpp b/src/security/encryption-manager.hpp
deleted file mode 100644
index e1b0f0e..0000000
--- a/src/security/encryption-manager.hpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2013-2014 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 Yingdi Yu <http://irl.cs.ucla.edu/~yingdi/>
- */
-
-#ifndef NDN_SECURITY_ENCRYPTION_MANAGER_HPP
-#define NDN_SECURITY_ENCRYPTION_MANAGER_HPP
-
-#include "../../name.hpp"
-#include "../security-common.hpp"
-
-namespace ndn {
-
-class EncryptionManager
-{
-public:
-  virtual
-  ~EncryptionManager()
-  {
-  }
-
-  virtual void
-  createSymmetricKey(const Name& keyName, KeyType keyType,
-                     const Name& signkeyName = Name(), bool isSymmetric = true) = 0;
-
-  virtual ConstBufferPtr
-  encrypt(const Name& keyName, const uint8_t* data, size_t dataLength, bool useSymmetric = false,
-          EncryptMode encryptMode = ENCRYPT_MODE_DEFAULT) = 0;
-
-  virtual ConstBufferPtr
-  decrypt(const Name& keyName, const uint8_t* data, size_t dataLength, bool useSymmetric = false,
-          EncryptMode encryptMode = ENCRYPT_MODE_DEFAULT) = 0;
-};
-
-} // namespace ndn
-
-#endif // NDN_SECURITY_ENCRYPTION_MANAGER_HPP