yuzu-emu/mbedtls
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Use modulus structure in mbedtls_mpi_mod_raw_add

Browse source 
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
This commit is contained in:
Werner Lewis 2022-11-01 13:36:51 +00:00 committed by Tom Cosgrove
parent 0eea827cbd
commit 9fa91ebcb9
2 changed files with 10 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
library/bignum_mod_raw.c
View file

@ -122,13 +122,12 @@ int mbedtls_mpi_mod_raw_write( const mbedtls_mpi_uint *A,
void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X,
mbedtls_mpi_uint const *A,
mbedtls_mpi_uint const *B,
const mbedtls_mpi_uint *N,
size_t limbs )
const mbedtls_mpi_mod_modulus *N )
{
size_t carry, borrow = 0;
carry = mbedtls_mpi_core_add( X, A, B, limbs );
borrow = mbedtls_mpi_core_sub( X, X, N, limbs);
(void) mbedtls_mpi_core_add_if( X, N, limbs, ( carry < borrow ) );
carry = mbedtls_mpi_core_add( X, A, B, N->limbs );
borrow = mbedtls_mpi_core_sub( X, X, N->p, N->limbs );
(void) mbedtls_mpi_core_add_if( X, N->p, N->limbs, ( carry < borrow ) );
}
/* END MERGE SLOT 5 */

12
library/bignum_mod_raw.h
View file

@ -162,17 +162,17 @@ int mbedtls_mpi_mod_raw_write( const mbedtls_mpi_uint *A,
*
* \param[out] X The result of the modular addition.
* \param[in] A Little-endian presentation of the left operand. This
* must be smaller than \p N.
* must be smaller than \p N, and have the same number of
* limbs.
* \param[in] B Little-endian presentation of the right operand. This
* must be smaller than \p N.
* \param[in] N Little-endian presentation of the modulus.
* \param limbs Number of limbs of \p X, \p A, \p B and \p N.
* must be smaller than \p N, and have the same number of
* limbs.
* \param[in] N The address of the modulus.
*/
void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X,
mbedtls_mpi_uint const *A,
mbedtls_mpi_uint const *B,
const mbedtls_mpi_uint *N,
size_t limbs );
const mbedtls_mpi_mod_modulus *N );
/* END MERGE SLOT 5 */
/* BEGIN MERGE SLOT 6 */