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mpi_mod_io_neg: fix use of uninitialized value

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Uninitialized values are invalid for the tested functions and we
shouldn't be testing that.

Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath 2022-11-26 18:46:54 +00:00
parent 6eb92c0410
commit e7190a2960
1 changed files with 8 additions and 7 deletions
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15
tests/suites/test_suite_bignum_mod.function
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@ -120,8 +120,7 @@ void mpi_mod_io_neg( char * input_N, data_t * buf, int ret )
mbedtls_mpi_uint *R = NULL;
mbedtls_mpi_mod_modulus m;
mbedtls_mpi_mod_residue r;
mbedtls_mpi_mod_residue rn = { NULL, 0 };
mbedtls_mpi_mod_residue r = { NULL, 0 };
mbedtls_mpi_mod_ext_rep endian = MBEDTLS_MPI_MOD_EXT_REP_LE;
mbedtls_mpi_mod_modulus_init( &m );
@ -131,22 +130,24 @@ void mpi_mod_io_neg( char * input_N, data_t * buf, int ret )
size_t r_limbs = n_limbs;
ASSERT_ALLOC( R, r_limbs );
/* modulo->p == NULL || residue->p == NULL ( m has not been set-up ) */
/* modulus->p == NULL || residue->p == NULL ( m has not been set-up ) */
TEST_EQUAL( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
mbedtls_mpi_mod_read( &r, &m, buf->x, buf->len, endian ) );
TEST_EQUAL( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
mbedtls_mpi_mod_write( &r, &m, buf->x, buf->len, endian ) );
/* Set up modulus and test with residue->p == NULL */
TEST_EQUAL( 0, mbedtls_mpi_mod_modulus_setup( &m, N, n_limbs,
MBEDTLS_MPI_MOD_REP_MONTGOMERY ) );
TEST_EQUAL( 0, mbedtls_mpi_mod_residue_setup( &r, &m, R , r_limbs ) );
/* modulo->p == NULL || residue->p == NULL ( m has been set-up ) */
TEST_EQUAL( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
mbedtls_mpi_mod_read( &rn, &m, buf->x, buf->len, endian ) );
mbedtls_mpi_mod_read( &r, &m, buf->x, buf->len, endian ) );
TEST_EQUAL( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
mbedtls_mpi_mod_write( &rn, &m, buf->x, buf->len, endian ) );
mbedtls_mpi_mod_write( &r, &m, buf->x, buf->len, endian ) );
/* Do the rest of the tests with a residue set up with the input data */
TEST_EQUAL( 0, mbedtls_mpi_mod_residue_setup( &r, &m, R , r_limbs ) );
/* Fail for r_limbs < m->limbs */
r.limbs--;