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Remove local MPI from ecp_normalize_jac_many()

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Signed-off-by: Hanno Becker <hanno.becker@arm.com>
This commit is contained in:
Hanno Becker 2022-01-04 05:18:57 +00:00
parent 838b715fcc
commit 02a999b91a
1 changed files with 7 additions and 7 deletions
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14
library/ecp.c
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@ -1279,7 +1279,7 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp,
#else #else
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t i; size_t i;
mbedtls_mpi *c, u, Zi, ZZi; mbedtls_mpi *c, u, Zi;
if( ( c = mbedtls_calloc( T_size, sizeof( mbedtls_mpi ) ) ) == NULL ) if( ( c = mbedtls_calloc( T_size, sizeof( mbedtls_mpi ) ) ) == NULL )
return( MBEDTLS_ERR_ECP_ALLOC_FAILED ); return( MBEDTLS_ERR_ECP_ALLOC_FAILED );
@ -1287,7 +1287,7 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp,
for( i = 0; i < T_size; i++ ) for( i = 0; i < T_size; i++ )
mbedtls_mpi_init( &c[i] ); mbedtls_mpi_init( &c[i] );
mbedtls_mpi_init( &u ); mbedtls_mpi_init( &Zi ); mbedtls_mpi_init( &ZZi ); mbedtls_mpi_init( &u ); mbedtls_mpi_init( &Zi );
/* /*
* c[i] = Z_0 * ... * Z_i * c[i] = Z_0 * ... * Z_i
@ -1322,10 +1322,10 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp,
/* /*
* proceed as in normalize() * proceed as in normalize()
*/ */
MPI_ECP_MUL( &ZZi, &Zi, &Zi ); MPI_ECP_MUL( &T[i]->Y, &T[i]->Y, &Zi );
MPI_ECP_MUL( &T[i]->X, &T[i]->X, &ZZi ); MPI_ECP_MUL( &Zi, &Zi, &Zi );
MPI_ECP_MUL( &T[i]->Y, &T[i]->Y, &ZZi ); MPI_ECP_MUL( &T[i]->X, &T[i]->X, &Zi );
MPI_ECP_MUL( &T[i]->Y, &T[i]->Y, &Zi ); MPI_ECP_MUL( &T[i]->Y, &T[i]->Y, &Zi );
/* /*
* Post-precessing: reclaim some memory by shrinking coordinates * Post-precessing: reclaim some memory by shrinking coordinates
@ -1343,7 +1343,7 @@ static int ecp_normalize_jac_many( const mbedtls_ecp_group *grp,
cleanup: cleanup:
mbedtls_mpi_free( &u ); mbedtls_mpi_free( &Zi ); mbedtls_mpi_free( &ZZi ); mbedtls_mpi_free( &u ); mbedtls_mpi_free( &Zi );
for( i = 0; i < T_size; i++ ) for( i = 0; i < T_size; i++ )
mbedtls_mpi_free( &c[i] ); mbedtls_mpi_free( &c[i] );
mbedtls_free( c ); mbedtls_free( c );