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Re-add mbedtls_entropy_self_test_wrapper

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Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
This commit is contained in:
Ben Taylor
2026-01-14 13:18:33 +00:00
parent b300692011
commit 842d2d948c
1 changed files with 40 additions and 9 deletions
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49
programs/test/selftest.c
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@@ -203,17 +203,45 @@ static int run_test_snprintf(void)
test_snprintf(5, "123", 3) != 0;
}
#if defined(MBEDTLS_SELF_TEST)
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
static int mbedtls_memory_buffer_alloc_free_and_self_test(int verbose)
/*
* Check if a seed file is present, and if not create one for the entropy
* self-test. If this fails, we attempt the test anyway, so no error is passed
* back.
*/
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_ENTROPY_C)
#if defined(MBEDTLS_ENTROPY_NV_SEED) && !defined(MBEDTLS_PSA_DRIVER_GET_ENTROPY)
static void dummy_entropy(unsigned char *output, size_t output_size)
{
if (verbose != 0) {
#if defined(MBEDTLS_MEMORY_DEBUG)
mbedtls_memory_buffer_alloc_status();
#endif
srand(1);
for (size_t i = 0; i < output_size; i++) {
output[i] = rand();
}
mbedtls_memory_buffer_alloc_free();
return mbedtls_memory_buffer_alloc_self_test(verbose);
}
static void create_entropy_seed_file(void)
{
int result;
unsigned char seed_value[MBEDTLS_ENTROPY_BLOCK_SIZE];
/* Attempt to read the entropy seed file. If this fails - attempt to write
* to the file to ensure one is present. */
result = mbedtls_platform_std_nv_seed_read(seed_value,
MBEDTLS_ENTROPY_BLOCK_SIZE);
if (0 == result) {
return;
}
dummy_entropy(seed_value, MBEDTLS_ENTROPY_BLOCK_SIZE);
mbedtls_platform_std_nv_seed_write(seed_value, MBEDTLS_ENTROPY_BLOCK_SIZE);
}
#endif /* defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_ENTROPY_C) */
static int mbedtls_entropy_self_test_wrapper(int verbose)
{
#if defined(MBEDTLS_ENTROPY_NV_SEED) && !defined(MBEDTLS_PSA_DRIVER_GET_ENTROPY)
create_entropy_seed_file();
#endif /* defined(MBEDTLS_ENTROPY_NV_SEED) && !defined(MBEDTLS_PSA_DRIVER_GET_ENTROPY) */
return mbedtls_entropy_self_test(verbose);
}
#endif
@@ -297,6 +325,9 @@ const selftest_t selftests[] =
#if defined(MBEDTLS_ECJPAKE_C)
{ "ecjpake", mbedtls_ecjpake_self_test },
#endif
#if defined(MBEDTLS_ENTROPY_C)
{ "entropy", mbedtls_entropy_self_test_wrapper },
#endif
#if defined(MBEDTLS_PKCS5_C)
{ "pkcs5", mbedtls_pkcs5_self_test },
#endif