SilcBool silc_auth_public_key_auth_verify_data(const unsigned char *payload,
                                               SilcUInt32 payload_len,
                                               SilcPublicKey public_key,
                                               SilcHash hash,
                                               const void *id,
                                               SilcIdType type);

    Same as silc_auth_public_key_auth_verify but the payload has not
    been parsed yet.  This will parse it.  Returns TRUE if authentication
    was successful.