typedef void (*SilcGetAuthMeth)(bool success,
                                    SilcProtocolAuthMeth auth_meth,
                                    const unsigned char *auth_data,
                                    SilcUInt32 auth_data_len, void *context);

    Authentication method resolving callback. This is called by the
    application to return the resolved authentication method. The client
    library has called the get_auth_method client operation and given
    this function pointer as argument. The `success' will indicate whether
    the authentication method could be resolved. The `auth_meth' is the
    resolved authentication method. The `auth_data' and the `auth_data_len'
    are the resolved authentication data. The `context' is the libary's
    context sent to the get_auth_method client operation.