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Bignum Mod: remove unused parameter in io_neg test

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The value was overwritten and the length wasn't used either. This latter
could have lead to a buffer overflow as well.

Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath 2022-11-26 12:20:41 +00:00
parent 566c91db27
commit 339b439906
2 changed files with 10 additions and 9 deletions
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10
tests/suites/test_suite_bignum_mod.data
View file

@ -57,19 +57,19 @@ Test mbedtls_mpi_residue_setup #8 r > m
mpi_residue_setup:"fe":"ff":-4
Test mbedtls_mpi_mod_io_neg #1 input_r < modulo m
mpi_mod_io_neg:"fe":"01":"fd":0
mpi_mod_io_neg:"fe":"fd":0
Test mbedtls_mpi_mod_io_neg #2 input_r == modulo m
mpi_mod_io_neg:"fe":"01":"fe":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
mpi_mod_io_neg:"fe":"fe":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
Test mbedtls_mpi_mod_io_neg #3 input_r > modulo m
mpi_mod_io_neg:"fe":"01":"ff":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
mpi_mod_io_neg:"fe":"ff":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
Test mbedtls_mpi_mod_io_neg #4 input_r too large to fit
mpi_mod_io_neg:"fe":"01":"ffffffffffffffffff":MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
mpi_mod_io_neg:"fe":"ffffffffffffffffff":MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
Test mbedtls_mpi_mod_io_neg #5 Sucesfull read / output buffer too small
mpi_mod_io_neg:"7ffffffffffffffffffffffffffffff1":"7ffffffffffffffffffffffffffffff0":"ffff":0
mpi_mod_io_neg:"7ffffffffffffffffffffffffffffff1":"ffff":0
Test mbedtls_mpi_mod_io #1 N: "11" A: "119".
mpi_mod_io:"000000000000000b":"0000000000000000":MBEDTLS_MPI_MOD_EXT_REP_BE

9
tests/suites/test_suite_bignum_mod.function
View file

@ -114,11 +114,10 @@ exit:
/* END_CASE */
/* BEGIN_CASE */
void mpi_mod_io_neg( char * input_N, char * input_R, data_t * buf, int ret )
void mpi_mod_io_neg( char * input_N, data_t * buf, int ret )
{
mbedtls_mpi_uint *N = NULL;
mbedtls_mpi_uint *R = NULL;
size_t n_limbs, r_limbs;
mbedtls_mpi_mod_modulus m;
mbedtls_mpi_mod_residue r;
@ -127,8 +126,10 @@ void mpi_mod_io_neg( char * input_N, char * input_R, data_t * buf, int ret )
mbedtls_mpi_mod_modulus_init( &m );
size_t n_limbs;
TEST_EQUAL( 0, mbedtls_test_read_mpi_core( &N, &n_limbs, input_N ) );
TEST_EQUAL( 0, mbedtls_test_read_mpi_core( &R, &r_limbs, input_R ) );
size_t r_limbs = n_limbs;
ASSERT_ALLOC( R, r_limbs );
/* modulo->p == NULL || residue->p == NULL ( m has not been set-up ) */
TEST_EQUAL( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
@ -139,7 +140,7 @@ void mpi_mod_io_neg( char * input_N, char * input_R, data_t * buf, int ret )
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 , n_limbs ) );
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,