Decentralized Computing Techniques in Support of Cyber-Physical Security for Electric and Autonomous Vehicles

摘要

Modern automobiles include a number of computers, i.e. Electronic Control Units (ECUs), interconnected by a common Controller Area Network (CAN). This CAN was designed in an era when there was no concept of the connected car. Connecting modern cars to the Internet opens the door to new cyber threats the CAN is ill prepared to protect against. Electric vehicles are no different in this respect, and many of the emerging autonomous vehicles will be electric too. Inexpensive diagnostic security monitoring (DSM) computers added to a vehicle and using decentralized computing techniques offer solutions to detect and analyze vehicular cyber attacks. This paper describes Decentralized Security Exchange (DSE) to efficiently support cyber-physical security for vehicles, including any electric, autonomous or conventional vehicle having a CAN bus. The performance of DSE for various levels of speculative computing replication aggressiveness is analyzed. The importance of the DSE solution for vehicles, especially during disaster scenarios is explained, as is its relevance to public confidence in green energy technologies.