Functions to convert raw residues to/from the modulus representation
Test cases will be generated automatically by a subsequent commit.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/bignum_mod_raw.c b/library/bignum_mod_raw.c
index fbd90bf..721efc8 100644
--- a/library/bignum_mod_raw.c
+++ b/library/bignum_mod_raw.c
@@ -176,6 +176,36 @@
/* 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,