diff --git a/src/ndncert-common.hpp b/src/ndncert-common.hpp
new file mode 100644
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--- /dev/null
+++ b/src/ndncert-common.hpp
@@ -0,0 +1,97 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2017, Regents of the University of California.
+ *
+ * This file is part of ndncert, a certificate management system based on NDN.
+ *
+ * ndncert is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * ndncert 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 General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License along with
+ * ndncert, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndncert authors and contributors.
+ */
+
+#ifndef NDNCERT_COMMON_HPP
+#define NDNCERT_COMMON_HPP
+
+#include "ndncert-config.hpp"
+
+#ifdef WITH_TESTS
+#define VIRTUAL_WITH_TESTS virtual
+#define PUBLIC_WITH_TESTS_ELSE_PROTECTED public
+#define PUBLIC_WITH_TESTS_ELSE_PRIVATE public
+#define PROTECTED_WITH_TESTS_ELSE_PRIVATE protected
+#else
+#define VIRTUAL_WITH_TESTS
+#define PUBLIC_WITH_TESTS_ELSE_PROTECTED protected
+#define PUBLIC_WITH_TESTS_ELSE_PRIVATE private
+#define PROTECTED_WITH_TESTS_ELSE_PRIVATE private
+#endif
+
+#include <cstddef>
+#include <cstdint>
+#include <functional>
+#include <list>
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <unordered_map>
+#include <utility>
+
+#include <ndn-cxx/interest.hpp>
+#include <ndn-cxx/data.hpp>
+#include <ndn-cxx/name.hpp>
+#include <ndn-cxx/encoding/block.hpp>
+#include <ndn-cxx/lp/nack.hpp>
+#include <ndn-cxx/util/backports.hpp>
+#include <ndn-cxx/util/face-uri.hpp>
+#include <ndn-cxx/util/signal.hpp>
+#include <ndn-cxx/security/v2/key-chain.hpp>
+#include <ndn-cxx/security/validator.hpp>
+#include <ndn-cxx/security/v2/certificate.hpp>
+
+#include <boost/algorithm/string.hpp>
+#include <boost/assert.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
+#include <boost/property_tree/info_parser.hpp>
+#include <boost/throw_exception.hpp>
+
+namespace ndn {
+namespace ndncert {
+
+using std::size_t;
+
+using boost::noncopyable;
+
+using std::shared_ptr;
+using std::unique_ptr;
+using std::weak_ptr;
+using std::make_shared;
+using ndn::make_unique;
+using std::enable_shared_from_this;
+
+using std::function;
+using std::bind;
+
+using ndn::Interest;
+using ndn::Data;
+using ndn::Name;
+using ndn::PartialName;
+using ndn::Block;
+using ndn::time::system_clock;
+using ndn::time::toUnixTimestamp;
+
+} // namespace ndncert
+} // namespace ndn
+
+#endif // NDNCERT_COMMON_HPP