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Merge pull request #6491 from davidhorstmann-arm/2.28-fix-unusual-macros-0

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[Backport-ish 2.28] Fix unusual macros
This commit is contained in:
Gilles Peskine
2022-11-03 10:29:06 +01:00
committed by GitHub
parent e9e0eeccec b5b1ed2969
commit c4698502d6
13 changed files with 160 additions and 81 deletions
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39
library/ecp.c
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@ -2048,9 +2048,13 @@ static int ecp_mul_comb_core( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R
i = d;
MBEDTLS_MPI_CHK( ecp_select_comb( grp, R, T, T_size, x[i] ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &R->Z, 1 ) );
int have_rng = 1;
#if defined(MBEDTLS_ECP_NO_INTERNAL_RNG)
if( f_rng != 0 )
if( f_rng == 0 )
have_rng = 0;
#endif
if( have_rng )
MBEDTLS_MPI_CHK( ecp_randomize_jac( grp, R, f_rng, p_rng ) );
}
@ -2184,9 +2188,12 @@ final_norm:
*
* Avoid the leak by randomizing coordinates before we normalize them.
*/
int have_rng = 1;
#if defined(MBEDTLS_ECP_NO_INTERNAL_RNG)
if( f_rng != 0 )
if( f_rng == 0 )
have_rng = 0;
#endif
if( have_rng )
MBEDTLS_MPI_CHK( ecp_randomize_jac( grp, RR, f_rng, p_rng ) );
MBEDTLS_MPI_CHK( ecp_normalize_jac( grp, RR ) );
@ -2395,12 +2402,14 @@ cleanup:
mbedtls_free( T );
}
/* don't free R while in progress in case R == P */
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
#endif
/* prevent caller from using invalid value */
if( ret != 0 )
int should_free_R = ( ret != 0 );
#if defined(MBEDTLS_ECP_RESTARTABLE)
/* don't free R while in progress in case R == P */
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
should_free_R = 0;
#endif
if( should_free_R )
mbedtls_ecp_point_free( R );
ECP_RS_LEAVE( rsm );
@ -2588,9 +2597,12 @@ static int ecp_mul_mxz( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
MOD_ADD( RP.X );
/* Randomize coordinates of the starting point */
int have_rng = 1;
#if defined(MBEDTLS_ECP_NO_INTERNAL_RNG)
if( f_rng != NULL )
if( f_rng == NULL )
have_rng = 0;
#endif
if( have_rng )
MBEDTLS_MPI_CHK( ecp_randomize_mxz( grp, &RP, f_rng, p_rng ) );
/* Loop invariant: R = result so far, RP = R + P */
@ -2623,9 +2635,12 @@ static int ecp_mul_mxz( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
*
* Avoid the leak by randomizing coordinates before we normalize them.
*/
have_rng = 1;
#if defined(MBEDTLS_ECP_NO_INTERNAL_RNG)
if( f_rng != NULL )
if( f_rng == NULL )
have_rng = 0;
#endif
if( have_rng )
MBEDTLS_MPI_CHK( ecp_randomize_mxz( grp, R, f_rng, p_rng ) );
MBEDTLS_MPI_CHK( ecp_normalize_mxz( grp, R ) );
@ -2672,10 +2687,12 @@ int mbedtls_ecp_mul_restartable( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
MBEDTLS_MPI_CHK( mbedtls_internal_ecp_init( grp ) );
#endif /* MBEDTLS_ECP_INTERNAL_ALT */
int restarting = 0;
#if defined(MBEDTLS_ECP_RESTARTABLE)
/* skip argument check when restarting */
if( rs_ctx == NULL || rs_ctx->rsm == NULL )
restarting = ( rs_ctx != NULL && rs_ctx->rsm != NULL );
#endif
/* skip argument check when restarting */
if( !restarting )
{
/* check_privkey is free */
MBEDTLS_ECP_BUDGET( MBEDTLS_ECP_OPS_CHK );