Source code
Revision control
Copy as Markdown
Other Tools
/*-
* Copyright (c) 2018-2025 Ribose Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RNP_MPI_HPP_
#define RNP_MPI_HPP_
#include <cstdint>
#include <cstddef>
#include <vector>
/* 16384 bits should be pretty enough for now */
#define PGP_MPINT_BITS (16384)
#define PGP_MPINT_SIZE (PGP_MPINT_BITS >> 3)
/** multi-precision integer, used in signatures and public/secret keys */
namespace pgp {
class mpi {
std::vector<uint8_t> data_;
public:
bool operator==(const mpi &src) const;
bool operator!=(const mpi &src) const;
uint8_t & operator[](size_t idx);
const uint8_t &operator[](size_t idx) const;
void assign(const uint8_t *val, size_t size);
void copy(uint8_t *dst) const noexcept;
void resize(size_t size, uint8_t fill = 0);
void forget() noexcept;
uint8_t * data() noexcept;
const uint8_t *data() const noexcept;
size_t size() const noexcept;
size_t bits() const noexcept;
};
} // namespace pgp
#endif // MPI_HPP_