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Use precise sizes for temporaries in test

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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Manuel Pégourié-Gonnard
2025-07-25 09:46:52 +02:00
parent 0904a74235
commit be8983d394
1 changed files with 32 additions and 25 deletions
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57
tests/suites/test_suite_bignum_core.function
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@@ -1539,14 +1539,16 @@ void mpi_core_gcd_modinv_odd_preconditions()
* crash (but just outputs garbage) when preconditions are not met.
*/
mbedtls_mpi_uint two_limbs[2];
mbedtls_mpi_uint one_limb[1];
mbedtls_mpi_uint *G = NULL, *I = NULL, *T = NULL;
mbedtls_mpi_uint two_limbs[2];
mbedtls_mpi_uint three_limbs[3];
mbedtls_mpi_uint *G = NULL, *I = NULL, *TG = NULL, *TI = NULL;
/* Large enough for all calls below */
/* We'll always use a two-limbs N */
TEST_CALLOC(G, 2);
TEST_CALLOC(I, 2);
TEST_CALLOC(T, 5 * 2);
TEST_CALLOC(TG, 4 * 2); // For I == NULL
TEST_CALLOC(TI, 5 * 2); // For I != NULL
/*
* Input values
@@ -1556,35 +1558,39 @@ void mpi_core_gcd_modinv_odd_preconditions()
two_limbs[0] = 2; // N = 2^n + 2
two_limbs[1] = 1;
one_limb[0] = 42; // A = 42
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, one_limb, 1, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, one_limb, 1, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, one_limb, 1, two_limbs, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, one_limb, 1, two_limbs, 2, TI);
/* A > N */
two_limbs[0] = 3; // N = 3
two_limbs[1] = 0;
one_limb[0] = 42; // A = 42
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, one_limb, 1, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, one_limb, 1, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, one_limb, 1, two_limbs, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, one_limb, 1, two_limbs, 2, TI);
/* A_limbs > N_limbs (but A <= N) */
one_limb[0] = 5; // N = 5
two_limbs[0] = 3; // A = 3
two_limbs[0] = 3; // N = 3
two_limbs[1] = 0;
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, two_limbs, 2, one_limb, 1, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, one_limb, 1, T);
three_limbs[0] = 1; // A = 1
three_limbs[1] = 0;
three_limbs[2] = 0;
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, three_limbs, 3, two_limbs, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, three_limbs, 3, two_limbs, 2, TI);
/* A_limbs > N_limbs (and A > N) */
one_limb[0] = 5; // N = 5
two_limbs[0] = 7; // A = 7
two_limbs[0] = 3; // N = 3
two_limbs[1] = 0;
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, two_limbs, 2, one_limb, 1, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, one_limb, 1, T);
three_limbs[0] = 0; // A = 2^2n
three_limbs[1] = 0;
three_limbs[2] = 1;
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, three_limbs, 3, two_limbs, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, three_limbs, 3, two_limbs, 2, TI);
/* I != NULL but N is 1 */
two_limbs[0] = 1; // N = 1
two_limbs[1] = 0;
one_limb[0] = 1; // A = 1
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, one_limb, 1, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, one_limb, 1, TI);
/*
* Aliasing
@@ -1596,30 +1602,31 @@ void mpi_core_gcd_modinv_odd_preconditions()
one_limb[0] = 42; // A = 42
/* A aliased to N */
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, two_limbs, 2, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, two_limbs, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, two_limbs, 2, two_limbs, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, two_limbs, 2, TI);
/* G aliased to A and N */
memcpy(G, two_limbs, 2 * sizeof(mbedtls_mpi_uint));
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, G, 2, G, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, G, 2, G, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, NULL, G, 2, G, 2, TG);
mbedtls_mpi_core_gcd_modinv_odd(G, I, G, 2, G, 2, TI);
/* I != NULL, G aliased to N */
memcpy(G, two_limbs, 2 * sizeof(mbedtls_mpi_uint));
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, G, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, G, 2, TI);
/* I != NULL, I aliased to N */
memcpy(I, two_limbs, 2 * sizeof(mbedtls_mpi_uint));
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, I, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, two_limbs, 2, I, 2, TI);
/* I aliased to A and N */
memcpy(I, two_limbs, 2 * sizeof(mbedtls_mpi_uint));
mbedtls_mpi_core_gcd_modinv_odd(G, I, I, 2, I, 2, T);
mbedtls_mpi_core_gcd_modinv_odd(G, I, I, 2, I, 2, TI);
exit:
mbedtls_free(G);
mbedtls_free(I);
mbedtls_free(T);
mbedtls_free(TG);
mbedtls_free(TI);
}
/* END_CASE */