rijndael.hpp

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//---------------------------------------------------------------------------//
// Copyright (c) 2018-2020 Mikhail Komarov <nemo@nil.foundation>
// Copyright (c) 2020 Nikita Kaskov <nbering@nil.foundation>
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_BLOCK_RIJNDAEL_HPP
#define CRYPTO3_BLOCK_RIJNDAEL_HPP
 
#include <boost/range/adaptor/sliced.hpp>
 
#include <nil/crypto3/block/detail/block_stream_processor.hpp>
#include <nil/crypto3/block/detail/cipher_modes.hpp>
 
#include <nil/crypto3/block/detail/rijndael/rijndael_policy.hpp>
#include <nil/crypto3/block/detail/rijndael/rijndael_impl.hpp>
 
#if defined(CRYPTO3_HAS_RIJNDAEL_NI)
 
#include <nil/crypto3/block/detail/rijndael/rijndael_ni_impl.hpp>
 
#elif defined(CRYPTO3_HAS_RIJNDAEL_SSSE3) || BOOST_HW_SIMD_X86 >= BOOST_HW_SIMD_X86_SSSE3_VERSION
 
#include <nil/crypto3/block/detail/rijndael/rijndael_ssse3_impl.hpp>
 
#elif defined(CRYPTO3_HAS_RIJNDAEL_ARMV8)
 
#include <nil/crypto3/block/detail/rijndael/rijndael_armv8_impl.hpp>
 
#elif defined(CRYPTO3_HAS_RIJNDAEL_POWER8)
 
#include <nil/crypto3/block/detail/rijndael/rijndael_power8_impl.hpp>
 
#endif
 
#include <nil/crypto3/block/detail/utilities/cpuid/cpuid.hpp>
 
namespace nil {
    namespace crypto3 {
        namespace block {
 
            template<std::size_t KeyBits, std::size_t BlockBits>
            class rijndael {
 
                BOOST_STATIC_ASSERT(KeyBits >= 128 && KeyBits <= 256 && KeyBits % 32 == 0);
                BOOST_STATIC_ASSERT(BlockBits >= 128 && BlockBits <= 256 && BlockBits % 32 == 0);
 
                constexpr static const std::size_t version = KeyBits;
                typedef detail::rijndael_policy<KeyBits, BlockBits> policy_type;
 
                typedef
                    typename std::conditional<BlockBits == 128 && (KeyBits == 128 || KeyBits == 192 || KeyBits == 256),
#if defined(CRYPTO3_HAS_RIJNDAEL_NI)
                                              detail::rijndael_ni_impl<KeyBits, BlockBits, policy_type>,
#elif defined(CRYPTO3_HAS_RIJNDAEL_SSSE3) || BOOST_HW_SIMD_X86 >= BOOST_HW_SIMD_X86_SSSE3_VERSION
                                              detail::rijndael_ssse3_impl<KeyBits, BlockBits, policy_type>,
#elif defined(CRYPTO3_HAS_RIJNDAEL_ARMV8)
                                              detail::rijndael_armv8_impl<KeyBits, BlockBits, policy_type>,
#elif defined(CRYPTO3_HAS_RIJNDAEL_POWER8)
                                              detail::rijndael_power8_impl<KeyBits, BlockBits, policy_type>,
#else
                                              detail::rijndael_impl<KeyBits, BlockBits, policy_type>,
#endif
                                              detail::rijndael_impl<KeyBits, BlockBits, policy_type>>::type impl_type;
 
                constexpr static const std::size_t key_schedule_words = policy_type::key_schedule_words;
                constexpr static const std::size_t key_schedule_bytes = policy_type::key_schedule_bytes;
                typedef typename policy_type::key_schedule_type key_schedule_type;
 
            public:
                constexpr static const std::size_t word_bits = policy_type::word_bits;
                constexpr static const std::size_t word_bytes = policy_type::word_bytes;
                typedef typename policy_type::word_type word_type;
 
                constexpr static const std::size_t key_bits = policy_type::key_bits;
                constexpr static const std::size_t key_words = policy_type::key_words;
                //                typedef typename policy_type::key_schedule_word_type key_schedule_word_type;
                typedef typename policy_type::key_type key_type;
 
                constexpr static const std::size_t block_bits = policy_type::block_bits;
                constexpr static const std::size_t block_words = policy_type::block_words;
                typedef typename policy_type::block_type block_type;
 
                constexpr static const std::uint8_t rounds = policy_type::rounds;
                typedef typename policy_type::round_constants_type round_constants_type;
 
                template<class Mode, typename StateAccumulator, std::size_t ValueBits>
                struct stream_processor {
                    struct params_type {
                        constexpr static const std::size_t value_bits = ValueBits;
                        constexpr static const std::size_t length_bits = policy_type::word_bits * 2;
                    };
 
                    typedef block_stream_processor<Mode, StateAccumulator, params_type> type;
                };
 
                typedef typename stream_endian::little_octet_big_bit endian_type;
 
                rijndael(const key_type &key) : encryption_key({0}), decryption_key({0}) {
                    impl_type::schedule_key(key, encryption_key, decryption_key);
                }
 
                virtual ~rijndael() {
                    encryption_key.fill(0);
                    decryption_key.fill(0);
                }
 
                inline block_type encrypt(const block_type &plaintext) const {
                    return impl_type::encrypt_block(plaintext, encryption_key);
                }
 
                inline block_type decrypt(const block_type &plaintext) const {
                    return impl_type::decrypt_block(plaintext, decryption_key);
                }
 
            protected:
                key_schedule_type encryption_key, decryption_key;
            };
        }    // namespace block
    }        // namespace crypto3
}    // namespace nil
 
#endif