diff --git a/src/util/cf-string-osx.hpp b/src/util/cf-string-osx.hpp
new file mode 100644
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--- /dev/null
+++ b/src/util/cf-string-osx.hpp
@@ -0,0 +1,68 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2018 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_UTIL_CF_STRING_OSX_HPP
+#define NDN_UTIL_CF_STRING_OSX_HPP
+
+#include "../common.hpp"
+
+#ifndef NDN_CXX_HAVE_OSX_FRAMEWORKS
+#error "This file should not be included ..."
+#endif
+
+#include "cf-releaser-osx.hpp"
+
+/**
+ * @file
+ *
+ * This file contains utilities to deal with Apple Core Foundation's CFString and related types.
+ */
+
+namespace ndn {
+namespace util {
+namespace cfstring {
+
+/**
+ * @brief Create a CFString by copying bytes from a raw buffer
+ * @throw std::runtime_error creation failed
+ */
+CFReleaser<CFStringRef>
+fromBuffer(const uint8_t* buf, size_t buflen);
+
+/**
+ * @brief Create a CFString by copying characters from a std::string
+ * @throw std::runtime_error creation failed
+ */
+CFReleaser<CFStringRef>
+fromStdString(const std::string& str);
+
+/**
+ * @brief Convert a CFString to a std::string
+ * @throw std::runtime_error conversion failed
+ */
+std::string
+toStdString(CFStringRef cfStr);
+
+} // namespace cfstring
+} // namespace util
+} // namespace ndn
+
+#endif // NDN_UTIL_CF_STRING_OSX_HPP