... and RSA_get0_factors. I know about EVP_PKEY_get_bn_param(). However, that allocates new bignums. Therefore, the caller has to say, if >3.0.0, free them, else don't.
The deprecated get0 functions just returned pointers that did not have to be separately freed. Is there a call to pass in an EVP_PKEY and get references to existing n,e,p, not allocated bignums?
