mirror/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-04-16 08:42:50 +00:00
Code Issues Actions Packages Projects Releases 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, void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X,
mbedtls_mpi_uint const *A, mbedtls_mpi_uint const *A,
mbedtls_mpi_uint const *B, mbedtls_mpi_uint const *B,
const mbedtls_mpi_uint *N, const mbedtls_mpi_mod_modulus *N )
size_t limbs )
{ {
size_t carry, borrow = 0; size_t carry, borrow = 0;
carry = mbedtls_mpi_core_add( X, A, B, limbs ); carry = mbedtls_mpi_core_add( X, A, B, N->limbs );
borrow = mbedtls_mpi_core_sub( X, X, N, limbs); borrow = mbedtls_mpi_core_sub( X, X, N->p, N->limbs );
(void) mbedtls_mpi_core_add_if( X, N, limbs, ( carry < borrow ) ); (void) mbedtls_mpi_core_add_if( X, N->p, N->limbs, ( carry < borrow ) );
} }
/* END MERGE SLOT 5 */ /* 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[out] X The result of the modular addition.
* \param[in] A Little-endian presentation of the left operand. This * \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 * \param[in] B Little-endian presentation of the right operand. This
* must be smaller than \p N. * must be smaller than \p N, and have the same number of
* \param[in] N Little-endian presentation of the modulus. * limbs.
* \param limbs Number of limbs of \p X, \p A, \p B and \p N. * \param[in] N The address of the modulus.
*/ */
void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X, void mbedtls_mpi_mod_raw_add( mbedtls_mpi_uint *X,
mbedtls_mpi_uint const *A, mbedtls_mpi_uint const *A,
mbedtls_mpi_uint const *B, mbedtls_mpi_uint const *B,
const mbedtls_mpi_uint *N, const mbedtls_mpi_mod_modulus *N );
size_t limbs );
/* END MERGE SLOT 5 */ /* END MERGE SLOT 5 */
/* BEGIN MERGE SLOT 6 */ /* BEGIN MERGE SLOT 6 */