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Basic Threefish implementation added #40
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include/nil/crypto3/block/detail/threefish/threefish_policy.hpp
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| //---------------------------------------------------------------------------// | ||
| // Copyright (c) 2018-2020 Mikhail Komarov <nemo@nil.foundation> | ||
| // | ||
| // 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 | ||
| //---------------------------------------------------------------------------// | ||
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| #ifndef CRYPTO3_THREEFISH_POLICY_HPP | ||
| #define CRYPTO3_THREEFISH_POLICY_HPP | ||
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| #include <array> | ||
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| #include <nil/crypto3/detail/basic_functions.hpp> | ||
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| namespace nil { | ||
| namespace crypto3 { | ||
| namespace block { | ||
| namespace detail { | ||
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| template<std::size_t KeyBits> | ||
| struct basic_threefish_policy : public ::nil::crypto3::detail::basic_functions<64> { | ||
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| constexpr static const std::size_t block_bits = KeyBits; | ||
| constexpr static const std::size_t block_words = block_bits / word_bits; | ||
| typedef std::array<word_type, block_words> block_type; | ||
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| constexpr static const std::size_t key_bits = KeyBits; | ||
| constexpr static const std::size_t key_words = key_bits / word_bits; | ||
| typedef std::array<word_type, key_words> key_type; | ||
| typedef std::array<word_type, key_words + 1> key_schedule_type; | ||
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| constexpr static const std::size_t tweak_bits = 128; | ||
| constexpr static const std::size_t tweak_words = tweak_bits / word_bits; | ||
| typedef std::array<word_type, tweak_words> tweak_type; | ||
| typedef std::array<word_type, tweak_words + 1> tweak_schedule_type; | ||
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| typedef std::array<unsigned, block_words> permutations_type; | ||
| typedef std::array<std::array<std::size_t, block_words / 2>, 8> rotations_type; | ||
| }; | ||
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| template<std::size_t KeyBits> | ||
| struct threefish_policy; | ||
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| template<> | ||
| struct threefish_policy<256> : basic_threefish_policy<256> { | ||
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| constexpr static const std::size_t rounds = 72; | ||
| typedef std::array<word_type, rounds> constants_type; | ||
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| constexpr static const permutations_type permutation = {{0, 3, 2, 1}}; | ||
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| constexpr static const rotations_type rotations = {{ | ||
| #ifdef CRYPTO3_BLOCK_THREEFISH_OLD_ROTATION_CONSTANTS | ||
| {{ 5, | ||
| 56 }}, | ||
| {{ 36, | ||
| 28 }}, | ||
| {{ 13, | ||
| 46 }}, | ||
| {{ 58, | ||
| 44 }}, | ||
| {{ 26, | ||
| 20 }}, | ||
| {{ 53, | ||
| 35 }}, | ||
| {{ 11, | ||
| 42 }}, | ||
| {{ 59, | ||
| 50 }}, | ||
| #else | ||
| {{14, 16}}, | ||
| {{52, 57}}, | ||
| {{23, 40}}, | ||
| {{5, 37}}, | ||
| {{25, 33}}, | ||
| {{46, 12}}, | ||
| {{58, 22}}, | ||
| {{32, 32}}, | ||
| #endif | ||
| }}; | ||
| }; | ||
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| constexpr threefish_policy<256>::permutations_type const threefish_policy<256>::permutation; | ||
| constexpr threefish_policy<256>::rotations_type const threefish_policy<256>::rotations; | ||
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| template<> | ||
| struct threefish_policy<512> : basic_threefish_policy<512> { | ||
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| constexpr static const std::size_t rounds = 72; | ||
| typedef std::array<word_type, rounds> constants_type; | ||
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| constexpr static permutations_type const permutation = {{2, 1, 4, 7, 6, 5, 0, 3}}; | ||
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| constexpr static rotations_type const rotations = {{ | ||
| #ifdef CRYPTO3_BLOCK_THREEFISH_OLD_ROTATION_CONSTANTS | ||
| {{ 38, | ||
| 30, | ||
| 50, | ||
| 53 }}, | ||
| {{ 48, | ||
| 20, | ||
| 43, | ||
| 31 }}, | ||
| {{ 34, | ||
| 14, | ||
| 15, | ||
| 27 }}, | ||
| {{ 26, | ||
| 12, | ||
| 58, | ||
| 7 }}, | ||
| {{ 33, | ||
| 49, | ||
| 8, | ||
| 42 }}, | ||
| {{ 39, | ||
| 27, | ||
| 41, | ||
| 14 }}, | ||
| {{ 29, | ||
| 26, | ||
| 11, | ||
| 9 }}, | ||
| {{ 33, | ||
| 51, | ||
| 39, | ||
| 35 }}, | ||
| #else | ||
| {{46, 36, 19, 37}}, | ||
| {{33, 27, 14, 42}}, | ||
| {{17, 49, 36, 39}}, | ||
| {{44, 9, 54, 56}}, | ||
| {{39, 30, 34, 24}}, | ||
| {{13, 50, 10, 17}}, | ||
| {{25, 29, 39, 43}}, | ||
| {{8, 35, 56, 22}} | ||
| #endif | ||
| }}; | ||
| }; | ||
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| constexpr threefish_policy<512>::permutations_type const threefish_policy<512>::permutation; | ||
| constexpr threefish_policy<512>::rotations_type const threefish_policy<512>::rotations; | ||
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| template<> | ||
| struct threefish_policy<1024> : basic_threefish_policy<1024> { | ||
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| constexpr static const std::size_t rounds = 80; | ||
| typedef std::array<word_type, rounds> constants_type; | ||
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| constexpr static permutations_type const permutation = { | ||
| {0, 9, 2, 13, 6, 11, 4, 15, 10, 7, 12, 3, 14, 5, 8, 1}}; | ||
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| constexpr static rotations_type const rotations = {{ | ||
| #ifdef CRYPTO3_BLOCK_THREEFISH_OLD_ROTATION_CONSTANTS | ||
| {{ 55, | ||
| 43, | ||
| 37, | ||
| 40, | ||
| 16, | ||
| 22, | ||
| 38, | ||
| 12 }}, | ||
| {{ 25, | ||
| 25, | ||
| 46, | ||
| 13, | ||
| 14, | ||
| 13, | ||
| 52, | ||
| 57 }}, | ||
| {{ 33, | ||
| 8, | ||
| 18, | ||
| 57, | ||
| 21, | ||
| 12, | ||
| 32, | ||
| 54 }}, | ||
| {{ 34, | ||
| 43, | ||
| 25, | ||
| 60, | ||
| 44, | ||
| 9, | ||
| 59, | ||
| 34 }}, | ||
| {{ 28, | ||
| 7, | ||
| 47, | ||
| 48, | ||
| 51, | ||
| 9, | ||
| 35, | ||
| 41 }}, | ||
| {{ 17, | ||
| 6, | ||
| 18, | ||
| 25, | ||
| 43, | ||
| 42, | ||
| 40, | ||
| 15 }}, | ||
| {{ 58, | ||
| 7, | ||
| 32, | ||
| 45, | ||
| 19, | ||
| 18, | ||
| 2, | ||
| 56 }}, | ||
| {{ 47, | ||
| 49, | ||
| 27, | ||
| 58, | ||
| 37, | ||
| 48, | ||
| 53, | ||
| 56 }}, | ||
| #else | ||
| {{24, 13, 8, 47, 8, 17, 22, 37}}, | ||
| {{38, 19, 10, 55, 49, 18, 23, 52}}, | ||
| {{33, 4, 51, 13, 34, 41, 59, 17}}, | ||
| {{5, 20, 48, 41, 47, 28, 16, 25}}, | ||
| {{41, 9, 37, 31, 12, 47, 44, 30}}, | ||
| {{16, 34, 56, 51, 4, 53, 42, 41}}, | ||
| {{31, 44, 47, 46, 19, 42, 44, 25}}, | ||
| {{9, 48, 35, 52, 23, 31, 37, 20}} | ||
| #endif | ||
| }}; | ||
| }; | ||
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| constexpr threefish_policy<1024>::permutations_type const threefish_policy<1024>::permutation; | ||
| constexpr threefish_policy<1024>::rotations_type const threefish_policy<1024>::rotations; | ||
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| } // namespace detail | ||
| } // namespace block | ||
| } // namespace crypto3 | ||
| } // namespace nil | ||
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| #endif // CRYPTO3_THREEFISH_POLICY_HPP |
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