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/*-
* Copyright (c) 2018 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_H_
#define RNP_MPI_H_
#include <cstdint>
#include <cstdbool>
#include <cstddef>
/* 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 */
typedef struct pgp_mpi_t {
uint8_t mpi[PGP_MPINT_SIZE];
size_t len;
} pgp_mpi_t;
bool mem2mpi(pgp_mpi_t *val, const void *mem, size_t len);
void mpi2mem(const pgp_mpi_t *val, void *mem);
char *mpi2hex(const pgp_mpi_t *val);
size_t mpi_bits(const pgp_mpi_t *val);
size_t mpi_bytes(const pgp_mpi_t *val);
bool mpi_equal(const pgp_mpi_t *val1, const pgp_mpi_t *val2);
void mpi_forget(pgp_mpi_t *val);
#endif // MPI_H_
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