145     def _create_nonce(self, eui64, frame_counter, security_level):  argument
159         return bytes(eui64 + struct.pack(">LB", frame_counter, security_level))
183             message_info.aux_sec_hdr.security_level,
209     def _create_nonce(self, source_eui64, frame_counter, security_level):  argument
223         return bytes(source_eui64[:8] + struct.pack(">LB", frame_counter, security_level))
247             message_info.aux_sec_hdr.security_level,
268         security_level,  argument
281         self._security_level = security_level
316     def security_level(self):  member in AuxiliarySecurityHeader
330             self.security_level,
354         security_level = security_control_byte & 0x07
357         return security_level, key_id_mode
369         security_level, key_id_mode = self._parse_security_control(security_control_bytes[0])
375 …    aux_sec_hdr = AuxiliarySecurityHeader(key_id_mode, security_level, frame_counter, key_id_bytes)