42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2018 Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include <cstddef>
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#include <array>
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#include <cruft/util/std.hpp>
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#include <cruft/util/view.hpp>
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namespace cruft::crypto::block {
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//template <
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// std::size_t KeyBitsV,
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// std::size_t BlockBitsV
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//>
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/// An implementation of the Speck block cipher.
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/// doi: 10.1145/2744769.2747946
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///
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/// TODO: The block and key sizes are currently hard coded to 128 and 128
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/// for ease of initial implementation. They should be parameters.
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class speck {
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public:
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using key_t = std::array<u64,2>;
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using word_t = u64;
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static constexpr auto block_size = sizeof (word_t) * 2;
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explicit speck (key_t);
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std::array<word_t,2> encrypt (std::array<word_t,2> src) const;
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std::array<word_t,2> decrypt (std::array<word_t,2> src) const;
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private:
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std::array<u64,32> m_key;
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};
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}
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