42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
|
/*
|
||
|
|
* 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 2018 Danny Robson <danny@nerdcruft.net>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <cstddef>
|
||
|
|
#include <array>
|
||
|
|
|
||
|
|
#include <cruft/util/std.hpp>
|
||
|
|
#include <cruft/util/view.hpp>
|
||
|
|
|
||
|
|
namespace cruft::crypto::block {
|
||
|
|
//template <
|
||
|
|
// std::size_t KeyBitsV,
|
||
|
|
// std::size_t BlockBitsV
|
||
|
|
//>
|
||
|
|
/// An implementation of the Speck block cipher.
|
||
|
|
/// doi: 10.1145/2744769.2747946
|
||
|
|
///
|
||
|
|
/// TODO: The block and key sizes are currently hard coded to 128 and 128
|
||
|
|
/// for ease of initial implementation. They should be parameters.
|
||
|
|
class speck {
|
||
|
|
public:
|
||
|
|
using key_t = std::array<u64,2>;
|
||
|
|
using word_t = u64;
|
||
|
|
static constexpr auto block_size = sizeof (word_t) * 2;
|
||
|
|
|
||
|
|
explicit speck (key_t);
|
||
|
|
|
||
|
|
std::array<word_t,2> encrypt (std::array<word_t,2> src) const;
|
||
|
|
std::array<word_t,2> decrypt (std::array<word_t,2> src) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::array<u64,32> m_key;
|
||
|
|
};
|
||
|
|
}
|