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Tests: provide necessary functions for MBEDTLS_PSA_INJECT_ENTROPY

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The build option MBEDTLS_PSA_INJECT_ENTROPY requires some extra platform
functions, for historical reasons. To enable us to test this option, provide
a version of these functions for testing.

(These versions would actually work in production, but providing them in the
library in a way that doesn't break existing users might be slightly tricky,
so it's out of scope of this commit.)

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-04-28 21:01:49 +02:00
parent 672a771227
commit a08def9871
4 changed files with 71 additions and 1 deletions
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31
tests/src/psa_crypto_helpers.c
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@@ -149,4 +149,35 @@ int mbedtls_test_fail_if_psa_leaking(int line_no, const char *filename)
}
}
#if defined(MBEDTLS_PSA_INJECT_ENTROPY)
#include <mbedtls/entropy.h>
#include <psa_crypto_its.h>
int mbedtls_test_inject_entropy_seed_read(unsigned char *buf, size_t len)
{
size_t actual_len = 0;
psa_status_t status = psa_its_get(PSA_CRYPTO_ITS_RANDOM_SEED_UID,
0, len, buf, &actual_len);
if (status != 0) {
return MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR;
}
if (actual_len != len) {
return MBEDTLS_ERR_ENTROPY_SOURCE_FAILED;
}
return 0;
}
int mbedtls_test_inject_entropy_seed_write(unsigned char *buf, size_t len)
{
psa_status_t status = psa_its_set(PSA_CRYPTO_ITS_RANDOM_SEED_UID,
len, buf, 0);
if (status != 0) {
return MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR;
}
return 0;
}
#endif /* MBEDTLS_PSA_INJECT_ENTROPY */
#endif /* MBEDTLS_PSA_CRYPTO_C */