33 lines
845 B
C++
33 lines
845 B
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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/// An implementation of the RC2 block cipher (RFC2268)
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class rc2 {
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public:
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using word_t = u16;
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static constexpr auto block_size = sizeof (word_t) * 4;
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explicit rc2 (cruft::view<u16 const*> key);
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std::array<word_t,4> encrypt (std::array<word_t,4> src) const;
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std::array<word_t,4> decrypt (std::array<word_t,4> src) const;
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private:
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std::array<u16,64> m_key;
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};
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}
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