Tests: provide necessary functions for MBEDTLS_PSA_INJECT_ENTROPY
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>
diff --git a/tests/src/psa_crypto_helpers.c b/tests/src/psa_crypto_helpers.c
index 77c2f89..7861185 100644
--- a/tests/src/psa_crypto_helpers.c
+++ b/tests/src/psa_crypto_helpers.c
@@ -149,4 +149,35 @@
}
}
+#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 */