kcdsa_import_priv_key
ret = kcdsa_import_priv_key(&priv, p, sizeof(p), q, sizeof(q), g, sizeof(g), x, sizeof(x)); EG(ret, err);
ATTRIBUTE_WARN_UNUSED_RET int kcdsa_import_priv_key(kcdsa_priv_key *priv, const u8 *p, u16 plen,