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Add tests for optionally unsafe code paths

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Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath 2024-08-13 11:39:03 +01:00 committed by Manuel Pégourié-Gonnard
parent df5e55bcb7
commit 1fa5f3a929
1 changed files with 29 additions and 3 deletions
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32
tf-psa-crypto/tests/suites/test_suite_bignum_core.function
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@ -1246,6 +1246,7 @@ void mpi_core_exp_mod(char *input_N, char *input_A,
char *input_E, char *input_X) char *input_E, char *input_X)
{ {
mbedtls_mpi_uint *A = NULL; mbedtls_mpi_uint *A = NULL;
mbedtls_mpi_uint *A_copy = NULL;
mbedtls_mpi_uint *E = NULL; mbedtls_mpi_uint *E = NULL;
mbedtls_mpi_uint *N = NULL; mbedtls_mpi_uint *N = NULL;
mbedtls_mpi_uint *X = NULL; mbedtls_mpi_uint *X = NULL;
@ -1297,10 +1298,10 @@ void mpi_core_exp_mod(char *input_N, char *input_A,
TEST_CALLOC(T, working_limbs); TEST_CALLOC(T, working_limbs);
/* Test the safe variant */
TEST_CF_SECRET(A, A_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(A, A_limbs * sizeof(mbedtls_mpi_uint));
TEST_CF_SECRET(N, N_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(N, N_limbs * sizeof(mbedtls_mpi_uint));
TEST_CF_SECRET(E, E_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(E, E_limbs * sizeof(mbedtls_mpi_uint));
#if defined(MBEDTLS_TEST_HOOKS) #if defined(MBEDTLS_TEST_HOOKS)
mbedtls_mpi_optionally_safe_codepath_reset(); mbedtls_mpi_optionally_safe_codepath_reset();
#endif #endif
@ -1308,16 +1309,31 @@ void mpi_core_exp_mod(char *input_N, char *input_A,
#if defined(MBEDTLS_TEST_HOOKS) #if defined(MBEDTLS_TEST_HOOKS)
TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_SECRET); TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_SECRET);
#endif #endif
TEST_EQUAL(0, memcmp(X, Y, N_limbs * sizeof(mbedtls_mpi_uint)));
TEST_CF_PUBLIC(Y, N_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_PUBLIC(Y, N_limbs * sizeof(mbedtls_mpi_uint));
TEST_EQUAL(0, memcmp(X, Y, N_limbs * sizeof(mbedtls_mpi_uint))); TEST_EQUAL(0, memcmp(X, Y, N_limbs * sizeof(mbedtls_mpi_uint)));
/* Test the unsafe variant */
#if defined(MBEDTLS_TEST_HOOKS)
mbedtls_mpi_optionally_safe_codepath_reset();
#endif
mbedtls_mpi_core_exp_mod_unsafe(Y, A, N, N_limbs, E, E_limbs, R2, T);
#if defined(MBEDTLS_TEST_HOOKS)
TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_PUBLIC);
#endif
TEST_EQUAL(0, memcmp(X, Y, N_limbs * sizeof(mbedtls_mpi_uint)));
/* Check both with output aliased to input */
TEST_CALLOC(A_copy, A_limbs);
memcpy(A_copy, A, sizeof(A_copy) * A_limbs);
TEST_CF_SECRET(A, A_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(A, A_limbs * sizeof(mbedtls_mpi_uint));
TEST_CF_SECRET(N, N_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(N, N_limbs * sizeof(mbedtls_mpi_uint));
TEST_CF_SECRET(E, E_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_SECRET(E, E_limbs * sizeof(mbedtls_mpi_uint));
/* Check when output aliased to input */
#if defined(MBEDTLS_TEST_HOOKS) #if defined(MBEDTLS_TEST_HOOKS)
mbedtls_mpi_optionally_safe_codepath_reset(); mbedtls_mpi_optionally_safe_codepath_reset();
#endif #endif
@ -1325,13 +1341,23 @@ void mpi_core_exp_mod(char *input_N, char *input_A,
#if defined(MBEDTLS_TEST_HOOKS) #if defined(MBEDTLS_TEST_HOOKS)
TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_SECRET); TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_SECRET);
#endif #endif
TEST_EQUAL(0, memcmp(X, A, N_limbs * sizeof(mbedtls_mpi_uint)));
TEST_CF_PUBLIC(A, A_limbs * sizeof(mbedtls_mpi_uint)); TEST_CF_PUBLIC(A, A_limbs * sizeof(mbedtls_mpi_uint));
memcpy(A, A_copy, sizeof(A) * A_limbs);
#if defined(MBEDTLS_TEST_HOOKS)
mbedtls_mpi_optionally_safe_codepath_reset();
#endif
mbedtls_mpi_core_exp_mod_unsafe(A, A, N, N_limbs, E, E_limbs, R2, T);
#if defined(MBEDTLS_TEST_HOOKS)
TEST_EQUAL(mbedtls_mpi_optionally_safe_codepath, MBEDTLS_MPI_IS_PUBLIC);
#endif
TEST_EQUAL(0, memcmp(X, A, N_limbs * sizeof(mbedtls_mpi_uint))); TEST_EQUAL(0, memcmp(X, A, N_limbs * sizeof(mbedtls_mpi_uint)));
exit: exit:
mbedtls_free(T); mbedtls_free(T);
mbedtls_free(A); mbedtls_free(A);
mbedtls_free(A_copy);
mbedtls_free(E); mbedtls_free(E);
mbedtls_free(N); mbedtls_free(N);
mbedtls_free(X); mbedtls_free(X);