A Study on Secure Protocol Techniques Supporting TCUs in a Telematics Environment

摘要

As mobile communications develop, automobiles are becoming increasingly computerized. Connected cars can communicate in various ways, with the range of communication also expanding. Onboard communication enables the exchange of information between various control devices, including instruments in the car, engine control units, and steering and braking devices. External communication can inform the driver of traffic-related, or accident-prevention information. By connecting externally using telematics, new services including software updates, remote diagnosis, emergency calls (eCall), payment, internet, infotainment, and automobile related apps have become available. Whilst connected cars are evolving into communication devices with many capabilities, in the future connected cars may include many interfaces and gateways, in which internal and external operations can be manipulated. Therefore, a comprehensive security architecture is required within the vehicle at points of contact with the outside world, and security enhancements are required for secure storage of keys used for authentication and communication security. An approach that takes into account both functional safety and information security has thus far not been found; there is therefore a need for specialized hardware and software to protect the relevant data, along with the solutions listed, to meet the functional safety required by ISO 26262.