libcruft-crypto/block/xxtea.hpp

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright 2015 Danny Robson <danny@nerdcruft.net>
 */

#ifndef CRUFT_CRYPTO_BLOCKXXTEA_HPP
#define CRUFT_CRYPTO_BLOCKXXTEA_HPP

#include <array>
#include <cstdint>
#include <cstddef>

namespace cruft::crypto::block {
    // http://en.wikipedia.org/wiki/XXTEA
    // 'corrected' block TEA
    class XXTEA {
    public:
        using key_t = std::array<uint32_t,4>;

        explicit XXTEA (key_t);

        void encrypt (uint32_t *restrict data, size_t count);
        void decrypt (uint32_t *restrict data, size_t count);

    private:
        key_t m_key;
    };
}

#endif