RSA_X931_hash_id
int RSA_X931_hash_id(int nid);
RSA_X931_hash_id(EVP_MD_type(rctx->md));
RSA_X931_hash_id(EVP_MD_type(rctx->md))) {
if (RSA_X931_hash_id(EVP_MD_type(md)) == -1) {