diff --git a/include/ndnboost/functional/hash/hash.hpp b/include/ndnboost/functional/hash/hash.hpp
new file mode 100644
index 0000000..7428567
--- /dev/null
+++ b/include/ndnboost/functional/hash/hash.hpp
@@ -0,0 +1,530 @@
+
+// Copyright 2005-2009 Daniel James.
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  Based on Peter Dimov's proposal
+//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
+//  issue 6.18. 
+
+#if !defined(NDNBOOST_FUNCTIONAL_HASH_HASH_HPP)
+#define NDNBOOST_FUNCTIONAL_HASH_HASH_HPP
+
+#include <ndnboost/functional/hash/hash_fwd.hpp>
+#include <functional>
+#include <ndnboost/functional/hash/detail/hash_float.hpp>
+#include <string>
+#include <ndnboost/limits.hpp>
+#include <ndnboost/type_traits/is_enum.hpp>
+#include <ndnboost/type_traits/is_integral.hpp>
+#include <ndnboost/utility/enable_if.hpp>
+
+#if defined(NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+#include <ndnboost/type_traits/is_pointer.hpp>
+#endif
+
+#if !defined(NDNBOOST_NO_CXX11_HDR_TYPEINDEX)
+#include <typeindex>
+#endif
+
+#if NDNBOOST_WORKAROUND(__GNUC__, < 3) \
+    && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+#define NDNBOOST_HASH_CHAR_TRAITS string_char_traits
+#else
+#define NDNBOOST_HASH_CHAR_TRAITS char_traits
+#endif
+
+namespace ndnboost
+{
+    namespace hash_detail
+    {
+        struct enable_hash_value { typedef std::size_t type; };
+
+        template <typename T> struct basic_numbers {};
+        template <typename T> struct long_numbers;
+        template <typename T> struct ulong_numbers;
+        template <typename T> struct float_numbers {};
+
+        template <> struct basic_numbers<bool> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<char> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<unsigned char> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<signed char> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<short> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<unsigned short> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<int> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<unsigned int> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<long> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct basic_numbers<unsigned long> :
+            ndnboost::hash_detail::enable_hash_value {};
+
+#if !defined(NDNBOOST_NO_INTRINSIC_WCHAR_T)
+        template <> struct basic_numbers<wchar_t> :
+            ndnboost::hash_detail::enable_hash_value {};
+#endif
+
+        // long_numbers is defined like this to allow for separate
+        // specialization for long_long and int128_type, in case
+        // they conflict.
+        template <typename T> struct long_numbers2 {};
+        template <typename T> struct ulong_numbers2 {};
+        template <typename T> struct long_numbers : long_numbers2<T> {};
+        template <typename T> struct ulong_numbers : ulong_numbers2<T> {};
+
+#if !defined(NDNBOOST_NO_LONG_LONG)
+        template <> struct long_numbers<ndnboost::long_long_type> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct ulong_numbers<ndnboost::ulong_long_type> :
+            ndnboost::hash_detail::enable_hash_value {};
+#endif
+
+#if defined(NDNBOOST_HAS_INT128)
+        template <> struct long_numbers2<ndnboost::int128_type> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct ulong_numbers2<ndnboost::uint128_type> :
+            ndnboost::hash_detail::enable_hash_value {};
+#endif
+
+        template <> struct float_numbers<float> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct float_numbers<double> :
+            ndnboost::hash_detail::enable_hash_value {};
+        template <> struct float_numbers<long double> :
+            ndnboost::hash_detail::enable_hash_value {};
+    }
+
+    template <typename T>
+    typename ndnboost::hash_detail::basic_numbers<T>::type hash_value(T);
+    template <typename T>
+    typename ndnboost::hash_detail::long_numbers<T>::type hash_value(T);
+    template <typename T>
+    typename ndnboost::hash_detail::ulong_numbers<T>::type hash_value(T);
+
+    template <typename T>
+    typename ndnboost::enable_if<ndnboost::is_enum<T>, std::size_t>::type
+        hash_value(T);
+
+#if !NDNBOOST_WORKAROUND(__DMC__, <= 0x848)
+    template <class T> std::size_t hash_value(T* const&);
+#else
+    template <class T> std::size_t hash_value(T*);
+#endif
+
+#if !defined(NDNBOOST_NO_FUNCTION_TEMPLATE_ORDERING)
+    template< class T, unsigned N >
+    std::size_t hash_value(const T (&x)[N]);
+
+    template< class T, unsigned N >
+    std::size_t hash_value(T (&x)[N]);
+#endif
+
+    template <class Ch, class A>
+    std::size_t hash_value(
+        std::basic_string<Ch, std::NDNBOOST_HASH_CHAR_TRAITS<Ch>, A> const&);
+
+    template <typename T>
+    typename ndnboost::hash_detail::float_numbers<T>::type hash_value(T);
+
+#if !defined(NDNBOOST_NO_CXX11_HDR_TYPEINDEX)
+    std::size_t hash_value(std::type_index);
+#endif
+
+    // Implementation
+
+    namespace hash_detail
+    {
+        template <class T>
+        inline std::size_t hash_value_signed(T val)
+        {
+             const int size_t_bits = std::numeric_limits<std::size_t>::digits;
+             // ceiling(std::numeric_limits<T>::digits / size_t_bits) - 1
+             const int length = (std::numeric_limits<T>::digits - 1)
+                 / size_t_bits;
+
+             std::size_t seed = 0;
+             T positive = val < 0 ? -1 - val : val;
+
+             // Hopefully, this loop can be unrolled.
+             for(unsigned int i = length * size_t_bits; i > 0; i -= size_t_bits)
+             {
+                 seed ^= (std::size_t) (positive >> i) + (seed<<6) + (seed>>2);
+             }
+             seed ^= (std::size_t) val + (seed<<6) + (seed>>2);
+
+             return seed;
+        }
+
+        template <class T>
+        inline std::size_t hash_value_unsigned(T val)
+        {
+             const int size_t_bits = std::numeric_limits<std::size_t>::digits;
+             // ceiling(std::numeric_limits<T>::digits / size_t_bits) - 1
+             const int length = (std::numeric_limits<T>::digits - 1)
+                 / size_t_bits;
+
+             std::size_t seed = 0;
+
+             // Hopefully, this loop can be unrolled.
+             for(unsigned int i = length * size_t_bits; i > 0; i -= size_t_bits)
+             {
+                 seed ^= (std::size_t) (val >> i) + (seed<<6) + (seed>>2);
+             }
+             seed ^= (std::size_t) val + (seed<<6) + (seed>>2);
+
+             return seed;
+        }
+    }
+
+    template <typename T>
+    typename ndnboost::hash_detail::basic_numbers<T>::type hash_value(T v)
+    {
+        return static_cast<std::size_t>(v);
+    }
+
+    template <typename T>
+    typename ndnboost::hash_detail::long_numbers<T>::type hash_value(T v)
+    {
+        return hash_detail::hash_value_signed(v);
+    }
+
+    template <typename T>
+    typename ndnboost::hash_detail::ulong_numbers<T>::type hash_value(T v)
+    {
+        return hash_detail::hash_value_unsigned(v);
+    }
+
+    template <typename T>
+    typename ndnboost::enable_if<ndnboost::is_enum<T>, std::size_t>::type
+        hash_value(T v)
+    {
+        return static_cast<std::size_t>(v);
+    }
+
+    // Implementation by Alberto Barbati and Dave Harris.
+#if !NDNBOOST_WORKAROUND(__DMC__, <= 0x848)
+    template <class T> std::size_t hash_value(T* const& v)
+#else
+    template <class T> std::size_t hash_value(T* v)
+#endif
+    {
+#if defined(__VMS) && __INITIAL_POINTER_SIZE == 64
+    // for some reason ptrdiff_t on OpenVMS compiler with
+    // 64 bit is not 64 bit !!!
+        std::size_t x = static_cast<std::size_t>(
+           reinterpret_cast<long long int>(v));
+#else
+        std::size_t x = static_cast<std::size_t>(
+           reinterpret_cast<std::ptrdiff_t>(v));
+#endif
+        return x + (x >> 3);
+    }
+
+#if defined(NDNBOOST_MSVC)
+#pragma warning(push)
+#if NDNBOOST_MSVC <= 1400
+#pragma warning(disable:4267) // 'argument' : conversion from 'size_t' to
+                              // 'unsigned int', possible loss of data
+                              // A misguided attempt to detect 64-bit
+                              // incompatability.
+#endif
+#endif
+
+#if NDNBOOST_WORKAROUND(NDNBOOST_MSVC, < 1300)
+    template <class T>
+    inline void hash_combine(std::size_t& seed, T& v)
+#else
+    template <class T>
+    inline void hash_combine(std::size_t& seed, T const& v)
+#endif
+    {
+        ndnboost::hash<T> hasher;
+        seed ^= hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2);
+    }
+
+#if defined(NDNBOOST_MSVC)
+#pragma warning(pop)
+#endif
+
+    template <class It>
+    inline std::size_t hash_range(It first, It last)
+    {
+        std::size_t seed = 0;
+
+        for(; first != last; ++first)
+        {
+            hash_combine(seed, *first);
+        }
+
+        return seed;
+    }
+
+    template <class It>
+    inline void hash_range(std::size_t& seed, It first, It last)
+    {
+        for(; first != last; ++first)
+        {
+            hash_combine(seed, *first);
+        }
+    }
+
+#if NDNBOOST_WORKAROUND(__BORLANDC__, NDNBOOST_TESTED_AT(0x551))
+    template <class T>
+    inline std::size_t hash_range(T* first, T* last)
+    {
+        std::size_t seed = 0;
+
+        for(; first != last; ++first)
+        {
+            ndnboost::hash<T> hasher;
+            seed ^= hasher(*first) + 0x9e3779b9 + (seed<<6) + (seed>>2);
+        }
+
+        return seed;
+    }
+
+    template <class T>
+    inline void hash_range(std::size_t& seed, T* first, T* last)
+    {
+        for(; first != last; ++first)
+        {
+            ndnboost::hash<T> hasher;
+            seed ^= hasher(*first) + 0x9e3779b9 + (seed<<6) + (seed>>2);
+        }
+    }
+#endif
+
+#if !defined(NDNBOOST_NO_FUNCTION_TEMPLATE_ORDERING)
+    template< class T, unsigned N >
+    inline std::size_t hash_value(const T (&x)[N])
+    {
+        return hash_range(x, x + N);
+    }
+
+    template< class T, unsigned N >
+    inline std::size_t hash_value(T (&x)[N])
+    {
+        return hash_range(x, x + N);
+    }
+#endif
+
+    template <class Ch, class A>
+    inline std::size_t hash_value(
+        std::basic_string<Ch, std::NDNBOOST_HASH_CHAR_TRAITS<Ch>, A> const& v)
+    {
+        return hash_range(v.begin(), v.end());
+    }
+
+    template <typename T>
+    typename ndnboost::hash_detail::float_numbers<T>::type hash_value(T v)
+    {
+        return ndnboost::hash_detail::float_hash_value(v);
+    }
+
+#if !defined(NDNBOOST_NO_CXX11_HDR_TYPEINDEX)
+    inline std::size_t hash_value(std::type_index v)
+    {
+        return v.hash_code();
+    }
+#endif
+
+    //
+    // ndnboost::hash
+    //
+    
+    // Define the specializations required by the standard. The general purpose
+    // ndnboost::hash is defined later in extensions.hpp if
+    // NDNBOOST_HASH_NO_EXTENSIONS is not defined.
+    
+    // NDNBOOST_HASH_SPECIALIZE - define a specialization for a type which is
+    // passed by copy.
+    //
+    // NDNBOOST_HASH_SPECIALIZE_REF - define a specialization for a type which is
+    // passed by copy.
+    //
+    // These are undefined later.
+
+#if !NDNBOOST_WORKAROUND(NDNBOOST_MSVC, < 1300)
+#define NDNBOOST_HASH_SPECIALIZE(type) \
+    template <> struct hash<type> \
+         : public std::unary_function<type, std::size_t> \
+    { \
+        std::size_t operator()(type v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    };
+
+#define NDNBOOST_HASH_SPECIALIZE_REF(type) \
+    template <> struct hash<type> \
+         : public std::unary_function<type, std::size_t> \
+    { \
+        std::size_t operator()(type const& v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    };
+#else
+#define NDNBOOST_HASH_SPECIALIZE(type) \
+    template <> struct hash<type> \
+         : public std::unary_function<type, std::size_t> \
+    { \
+        std::size_t operator()(type v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    }; \
+    \
+    template <> struct hash<const type> \
+         : public std::unary_function<const type, std::size_t> \
+    { \
+        std::size_t operator()(const type v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    };
+
+#define NDNBOOST_HASH_SPECIALIZE_REF(type) \
+    template <> struct hash<type> \
+         : public std::unary_function<type, std::size_t> \
+    { \
+        std::size_t operator()(type const& v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    }; \
+    \
+    template <> struct hash<const type> \
+         : public std::unary_function<const type, std::size_t> \
+    { \
+        std::size_t operator()(type const& v) const \
+        { \
+            return ndnboost::hash_value(v); \
+        } \
+    };
+#endif
+
+    NDNBOOST_HASH_SPECIALIZE(bool)
+    NDNBOOST_HASH_SPECIALIZE(char)
+    NDNBOOST_HASH_SPECIALIZE(signed char)
+    NDNBOOST_HASH_SPECIALIZE(unsigned char)
+#if !defined(NDNBOOST_NO_INTRINSIC_WCHAR_T)
+    NDNBOOST_HASH_SPECIALIZE(wchar_t)
+#endif
+    NDNBOOST_HASH_SPECIALIZE(short)
+    NDNBOOST_HASH_SPECIALIZE(unsigned short)
+    NDNBOOST_HASH_SPECIALIZE(int)
+    NDNBOOST_HASH_SPECIALIZE(unsigned int)
+    NDNBOOST_HASH_SPECIALIZE(long)
+    NDNBOOST_HASH_SPECIALIZE(unsigned long)
+
+    NDNBOOST_HASH_SPECIALIZE(float)
+    NDNBOOST_HASH_SPECIALIZE(double)
+    NDNBOOST_HASH_SPECIALIZE(long double)
+
+    NDNBOOST_HASH_SPECIALIZE_REF(std::string)
+#if !defined(NDNBOOST_NO_STD_WSTRING)
+    NDNBOOST_HASH_SPECIALIZE_REF(std::wstring)
+#endif
+
+#if !defined(NDNBOOST_NO_LONG_LONG)
+    NDNBOOST_HASH_SPECIALIZE(ndnboost::long_long_type)
+    NDNBOOST_HASH_SPECIALIZE(ndnboost::ulong_long_type)
+#endif
+
+#if defined(NDNBOOST_HAS_INT128)
+    NDNBOOST_HASH_SPECIALIZE(ndnboost::int128_type)
+    NDNBOOST_HASH_SPECIALIZE(ndnboost::uint128_type)
+#endif
+
+#if !defined(NDNBOOST_NO_CXX11_HDR_TYPEINDEX)
+    NDNBOOST_HASH_SPECIALIZE(std::type_index)
+#endif
+
+#undef NDNBOOST_HASH_SPECIALIZE
+#undef NDNBOOST_HASH_SPECIALIZE_REF
+
+// Specializing ndnboost::hash for pointers.
+
+#if !defined(NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+
+    template <class T>
+    struct hash<T*>
+        : public std::unary_function<T*, std::size_t>
+    {
+        std::size_t operator()(T* v) const
+        {
+#if !NDNBOOST_WORKAROUND(__SUNPRO_CC, <= 0x590)
+            return ndnboost::hash_value(v);
+#else
+            std::size_t x = static_cast<std::size_t>(
+                reinterpret_cast<std::ptrdiff_t>(v));
+
+            return x + (x >> 3);
+#endif
+        }
+    };
+
+#else
+
+    // For compilers without partial specialization, we define a
+    // ndnboost::hash for all remaining types. But hash_impl is only defined
+    // for pointers in 'extensions.hpp' - so when NDNBOOST_HASH_NO_EXTENSIONS
+    // is defined there will still be a compile error for types not supported
+    // in the standard.
+
+    namespace hash_detail
+    {
+        template <bool IsPointer>
+        struct hash_impl;
+
+        template <>
+        struct hash_impl<true>
+        {
+            template <class T>
+            struct inner
+                : public std::unary_function<T, std::size_t>
+            {
+                std::size_t operator()(T val) const
+                {
+#if !NDNBOOST_WORKAROUND(__SUNPRO_CC, <= 590)
+                    return ndnboost::hash_value(val);
+#else
+                    std::size_t x = static_cast<std::size_t>(
+                        reinterpret_cast<std::ptrdiff_t>(val));
+
+                    return x + (x >> 3);
+#endif
+                }
+            };
+        };
+    }
+
+    template <class T> struct hash
+        : public ndnboost::hash_detail::hash_impl<ndnboost::is_pointer<T>::value>
+            ::NDNBOOST_NESTED_TEMPLATE inner<T>
+    {
+    };
+
+#endif
+}
+
+#undef NDNBOOST_HASH_CHAR_TRAITS
+
+#endif // NDNBOOST_FUNCTIONAL_HASH_HASH_HPP
+
+// Include this outside of the include guards in case the file is included
+// twice - once with NDNBOOST_HASH_NO_EXTENSIONS defined, and then with it
+// undefined.
+
+#if !defined(NDNBOOST_HASH_NO_EXTENSIONS) \
+    && !defined(NDNBOOST_FUNCTIONAL_HASH_EXTENSIONS_HPP)
+#include <ndnboost/functional/hash/extensions.hpp>
+#endif