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Merge pull request #6289 from gabor-mezei-arm/6237_Add_conditional_assign_and_swap_for_bignum

Bignum: Add safe conditional assign and swap for the new MPI types
This commit is contained in:
Gilles Peskine
2022-10-19 15:51:19 +02:00
committed by GitHub
7 changed files with 548 additions and 19 deletions

View File

@ -33,6 +33,22 @@
#include "bignum_mod.h"
#include "constant_time_internal.h"
void mbedtls_mpi_mod_raw_cond_assign( mbedtls_mpi_uint *X,
const mbedtls_mpi_uint *A,
const mbedtls_mpi_mod_modulus *N,
unsigned char assign )
{
mbedtls_mpi_core_cond_assign( X, A, N->limbs, assign );
}
void mbedtls_mpi_mod_raw_cond_swap( mbedtls_mpi_uint *X,
mbedtls_mpi_uint *Y,
const mbedtls_mpi_mod_modulus *N,
unsigned char swap )
{
mbedtls_mpi_core_cond_swap( X, Y, N->limbs, swap );
}
int mbedtls_mpi_mod_raw_read( mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *m,
const unsigned char *input,