void silc_failure(SilcClient client, SilcClientConnection conn,
SilcProtocol protocol, void *failure);
int silc_key_agreement(SilcClient client, SilcClientConnection conn,
void silc_failure(SilcClient client, SilcClientConnection conn,
SilcProtocol protocol, void *failure);
int silc_key_agreement(SilcClient client, SilcClientConnection conn,