Check if the given OID is the Kerberos V5 OID (server mode).

        :param str desired_mech: The desired GSS-API mechanism of the client
        :return: ``True`` if the given OID is supported, otherwise C{False}

def ssh_check_mech(self, desired_mech):
        """
        Check if the given OID is the Kerberos V5 OID (server mode).

        :param str desired_mech: The desired GSS-API mechanism of the client
        :return: ``True`` if the given OID is supported, otherwise C{False}
        """
        from pyasn1.codec.der import decoder

        mech, __ = decoder.decode(desired_mech)
        if mech.__str__() != self._krb5_mech:
            return False
        return True