diff --git a/tools/ndnsec/sig-verify.hpp b/tools/ndnsec/sig-verify.hpp
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+++ b/tools/ndnsec/sig-verify.hpp
@@ -0,0 +1,128 @@
+/* -*- 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_TOOLS_NDNSEC_SIG_VERIFY_HPP
+#define NDN_TOOLS_NDNSEC_SIG_VERIFY_HPP
+
+#include "util.hpp"
+
+// using namespace ndn;
+// namespace po = boost::program_options;
+
+// shared_ptr<IdentityCertificate>
+// getCertificate(const std::string& certString)
+// {
+//   std::string decoded;
+//   CryptoPP::StringSource ss2(reinterpret_cast<const unsigned char *>(certString.c_str()), certString.size(), true,
+//                              new CryptoPP::Base64Decoder(new CryptoPP::StringSink(decoded)));
+
+//   Data data;
+//   data.wireDecode(Block(make_shared<Buffer>(decoded.begin(), decoded.end())));
+
+//   shared_ptr<IdentityCertificate> identityCertificate = make_shared<IdentityCertificate>(data);
+
+//   return identityCertificate;
+// }
+
+// bool
+// verifySignature(shared_ptr<IdentityCertificate> certificate, bool isDataPacket)
+// {
+//   throw std::runtime_error("Not supported yet");
+//   // if(isDataPacket)
+//   //   {
+//   //     std::string decoded;
+//   //     CryptoPP::FileSource ss2(cin, true,
+//   //                              new CryptoPP::Base64Decoder(new CryptoPP::StringSink(decoded)));
+
+//   //     Data data;
+//   //     data.wireDecode(make_shared<Buffer>(decoded.c_str(), decoded.size()));
+//   //     return PolicyManager::verifySignature(data, certificate->getPublicKeyInfo());
+//   //   }
+//   // else
+//   //   {
+//   //     // The first two bytes indicates the boundary of the of the signed data and signature.
+//   //     // for example, if the size of the signed data is 300, then the boundary should be 300, so the first two bytes should be: 0x01 0x2C
+//   //     shared_ptr<Blob> input = shared_ptr<Blob>(new Blob ((istreambuf_iterator<char>(cin)), istreambuf_iterator<char>()));
+//   //     size_t size = input->at(0);
+//   //     size = ((size << 8) + input->at(1));
+
+//   //     Blob signedBlob(input->buf()+2, size);
+//   //     Blob signature(input->buf()+2+size, input->size()-2-size);
+
+//   //     return PolicyManager::verifySignature(signedBlob, signature, certificate->getPublicKeyInfo());
+//   //   }
+// }
+
+int
+ndnsec_sig_verify(int argc, char** argv)
+{
+  std::cerr << "Not supported yet" << std::endl;
+  return 1;
+  // bool isDataPacket = false;
+  // std::string certString;
+
+  // po::options_description desc("General Usage\n  ndn-sig-verify [-h] [-d] certificate\nGeneral options");
+  // desc.add_options()
+  //   ("help,h", "produce help message")
+  //   ("data,d", "if specified, input from stdin will be treated as a Data packet, otherwise binary data")
+  //   ("certificate,c", po::value<std::string>(&certString), "the certificate bits")
+  //   ;
+
+  // po::positional_options_description p;
+  // p.add("certificate", 1);
+
+  // po::variables_map vm;
+  // try
+  //   {
+  //     po::store(po::command_line_parser(argc, argv).options(desc).positional(p).run(), vm);
+  //     po::notify(vm);
+  //   }
+  // catch( const std::exception& e)
+  //   {
+  //     std::cerr << e.what() << std::endl;
+  //     std::cerr << desc << std::endl;
+  //     return 1;
+  //   }
+
+  // if (vm.count("help") || vm.count("certificate")==0)
+  //   {
+  //     std::cerr << desc << std::endl;
+  //     return 1;
+  //   }
+  // if (vm.count("data"))
+  //   isDataPacket = true;
+
+  // try
+  //   {
+  //     shared_ptr<IdentityCertificate> certificate = getCertificate(certString);
+  //     bool res = verifySignature(certificate, isDataPacket);
+  //     return (res ? 0 : 1);
+  //   }
+  // catch(const std::exception &e)
+  //   {
+  //     std::cerr << "ERROR: " << e.what() << std::endl;
+  //     return 1;
+  //   }
+}
+
+#endif // NDN_TOOLS_NDNSEC_SIG_VERIFY_HPP