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Merge pull request #6747 from gilles-peskine-arm/bignum-mod-random

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Bignum mod random
This commit is contained in:
Manuel Pégourié-Gonnard
2022-12-23 10:36:22 +01:00
committed by GitHub
parent 2510dd41bf 5efe449a6a
commit 2fcb4c1d06
15 changed files with 909 additions and 175 deletions
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42
library/bignum_mod_raw.c
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@ -186,6 +186,48 @@ void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X,
/* BEGIN MERGE SLOT 6 */
int mbedtls_mpi_mod_raw_canonical_to_modulus_rep(
mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N )
{
switch( N->int_rep )
{
case MBEDTLS_MPI_MOD_REP_MONTGOMERY:
return( mbedtls_mpi_mod_raw_to_mont_rep( X, N ) );
case MBEDTLS_MPI_MOD_REP_OPT_RED:
return( 0 );
default:
return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
}
}
int mbedtls_mpi_mod_raw_modulus_to_canonical_rep(
mbedtls_mpi_uint *X,
const mbedtls_mpi_mod_modulus *N )
{
switch( N->int_rep )
{
case MBEDTLS_MPI_MOD_REP_MONTGOMERY:
return( mbedtls_mpi_mod_raw_from_mont_rep( X, N ) );
case MBEDTLS_MPI_MOD_REP_OPT_RED:
return( 0 );
default:
return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
}
}
int mbedtls_mpi_mod_raw_random( mbedtls_mpi_uint *X,
mbedtls_mpi_uint min,
const mbedtls_mpi_mod_modulus *N,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{
int ret = mbedtls_mpi_core_random( X, min, N->p, N->limbs, f_rng, p_rng );
if( ret != 0 )
return( ret );
return( mbedtls_mpi_mod_raw_canonical_to_modulus_rep( X, N ) );
}
/* END MERGE SLOT 6 */
/* BEGIN MERGE SLOT 7 */