SilcSKEStatus silc_ske_initiator_phase_2(SilcSKE ske,
                                             SilcPublicKey public_key,
                                             SilcPrivateKey private_key,
                                             SilcSKEPKType pk_type)

    This function continues the SKE session after the initiator has
    called the silc_ske_initiator_phase_1.  After that function returns
    the application should call immediately, or with short timeout, this
    function which will continue with the session, and sends next phase
    packet to the responder.  The caller must provide the caller's
    public key and private key as argument, since the public key is
    sent to the responder, and the private key is be used to generate
    digital signature.

    After this function the application must wait for reply from the
    responder.