rsadp_hardened
ret = rsadp_hardened(priv, pub, &c_, &m_); EG(ret, err);
ret = rsadp_hardened(priv, pub, &c_, &m_); EG(ret, err);
return rsadp_hardened(priv, pub, m, s);
ATTRIBUTE_WARN_UNUSED_RET int rsadp_hardened(const rsa_priv_key *priv, const rsa_pub_key *pub, nn_src_t c, nn_t m);