> Now one small question: how do I ensure that ?RAND_engine (and therefore Intel RDRAND output) is being used for the key generation in
> EVP_PKEY_keygen(ctx, &newkey);
>
> Is just loading RAND_engine enough for that??
> ?
To verify it, I think you need to inspect the default RAND method. Its
going to look something like:
RAND_METHOD* rm = RAND_get_rand_method();
if(rm == RAND_SSLeay())
{
printf("Using default generator\n");
}
Also see https://wiki.openssl.org/index.php/Random_Numbers#Generators.
RDRAND is discussed there, too. But I don't recall how much detail is
provided.
Jeff
