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v/thirdparty/mbedtls/library/bignum_internal.h

51 lines
1.8 KiB
C

/**
* 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_INTERNAL_H
#define MBEDTLS_BIGNUM_INTERNAL_H
#include "common.h"
#if defined(MBEDTLS_BIGNUM_C)
#include "mbedtls/bignum.h"
#endif
/** Perform a known-size multiply accumulate operation
*
* Add \p b * \p s to \p d.
*
* \param[in,out] d The pointer to the (little-endian) array
* representing the bignum to accumulate onto.
* \param d_len The number of limbs of \p d. This must be
* at least \p s_len.
* \param[in] s The pointer to the (little-endian) array
* representing the bignum to multiply with.
* This may be the same as \p d. Otherwise,
* it must be disjoint from \p d.
* \param s_len The number of limbs of \p s.
* \param b A scalar to multiply with.
*
* \return c The carry at the end of the operation.
*/
mbedtls_mpi_uint mbedtls_mpi_core_mla( mbedtls_mpi_uint *d, size_t d_len ,
const mbedtls_mpi_uint *s, size_t s_len,
mbedtls_mpi_uint b );
#endif /* MBEDTLS_BIGNUM_INTERNAL_H */