Wireless Security in Road Vehicles - Improving Security in the SIGYN System

Abstract: Remote wireless diagnostics and firmware updates are emerging technologies in the vehicular industry. They have many benefits, such as the abilityfor a manufacturer to perform firmware updates on a large population at the same time, without having to get vehicles to visit a workshop. Previoussystems have relied on wired connections for performing these actions, and therefore the vehicle has not needed a lot of protection. By introducingwireless capabilities in the vehicles, vehicle manufacturers now face newrisks which must be prevented or mitigated.We have studied such a wireless system, SIGYN, currently being developedby Volvo Personvagnar and Volvo IT in collaboration with Chalmers.We have written a reference client, which will be used for testing. We haveexamined security requirements and implemented security mechanisms toshow how security in SIGYN could be improved.We have found a number of measures to increase security in the system and have implemented some of them. However, our work is only one step on the way to a fully secure system. Thus we finally provide a discussion of which further actions need to be taken.