do_X509_sign
int do_X509_sign(BIO *err, X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
if (!do_X509_sign(bio_err, ret, pkey, dgst, sigopts))
i = do_X509_sign(bio_err, x509ss, pkey, req_config.digest, req_config.sigopts);
if (!do_X509_sign(bio_err, x, pkey, digest, sigopts))