TRANSCIVER SECURITY COMMUNICATION METHOD FOR BROADCASTING TRAFFIC INFORMATION

摘要

PURPOSE: A wireless security communication method for traffic signal transfer is provided to offer optimized security framework technology. CONSTITUTION: A controller creates a message of a predetermined form including traffic information. The controller transmits the generated message to a wireless receiver. The message of the predetermined form comprises header, payload, and MAC(Message Authentication Code) parts. The header part is transmitted without encryption. The payload part is transmitted after encryption. The MAC part is attached as a secure message to the rear of the payload. The MAC part includes the header part and the payload part and is calculated.