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Add the new modulus and the residue structures

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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
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Gabor Mezei 2022-07-18 23:02:33 +02:00 • committed by Janos Follath
parent 5740ff5f1f
commit f049dbfe94
2 changed files with 206 additions and 0 deletions
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68
library/bignum_mod.h Normal file
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/**
* Internal bignum functions
*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBEDTLS_BIGNUM_MOD_H
#define MBEDTLS_BIGNUM_MOD_H
#include "common.h"
#if defined(MBEDTLS_BIGNUM_C)
#include "mbedtls/bignum.h"
#endif
typedef struct
{
size_t n;
mbedtls_mpi_uint *p;
} mbedtls_mpi_mod_residue;
typedef void* mbedtls_mpi_mont_struct;
typedef void* mbedtls_mpi_opt_red_struct;
typedef struct {
mbedtls_mpi_uint *p;
size_t n; // number of limbs
size_t plen; // bitlen of p
int ext_rep; // signals external representation (eg. byte order)
int int_rep; // selector to signal the active member of the union
union rep
{
mbedtls_mpi_mont_struct mont;
mbedtls_mpi_opt_red_struct ored;
} rep;
} mbedtls_mpi_mod_modulus;
void mbedtls_mpi_mod_residue_release( mbedtls_mpi_mod_residue *r );
int mbedtls_mpi_mod_residue_setup( mbedtls_mpi_mod_residue *r,
mbedtls_mpi_mod_modulus *m,
mbedtls_mpi_uint *p );
void mbedtls_mpi_mod_modulus_init( mbedtls_mpi_mod_modulus *m );
void mbedtls_mpi_mod_modulus_init( mbedtls_mpi_mod_modulus *m );
int mbedtls_mpi_mod_modulus_setup( mbedtls_mpi_mod_modulus *m,
mbedtls_mpi_uint *p,
size_t n,
int ext_rep,
int int_rep );
#endif /* MBEDTLS_BIGNUM_MOD_H */