Implement use of internal DRBG for ecp_mul()
The case of MBEDTLS_ECP_RESTARTABLE isn't handled correctly yet: in that case
the DRBG instance should persist when resuming the operation. This will be
addressed in the next commit.
When both CTR_DRBG and HMAC_DRBG are available, CTR_DRBG is preferred since
both are suitable but CTR_DRBG tends to be faster and I needed a tie-breaker.
There are currently three possible cases to test:
- NO_INTERNAL_RNG is set -> tested in test_ecp_no_internal_rng
- it's unset and CTR_DRBG is available -> tested in the default config
- it's unset and CTR_DRBG is disabled -> tested in
test_ecp_internal_rng_no_ctr_drbg
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/md.h b/include/mbedtls/md.h
index 06538c3..7c1ae7e 100644
--- a/include/mbedtls/md.h
+++ b/include/mbedtls/md.h
@@ -95,6 +95,8 @@
* \brief This function returns the list of digests supported by the
* generic digest module.
*
+ * \note The list starts with the strongest available hashes.
+ *
* \return A statically allocated array of digests. Each element
* in the returned list is an integer belonging to the
* message-digest enumeration #mbedtls_md_type_t.