Security Control Mechanism for Safety Critical Functions Operating on Automotive Controller Area Network
Author | : Matt Appel |
Publisher | : |
Total Pages | : 104 |
Release | : 2020 |
Genre | : Automobiles |
ISBN | : |
Download Security Control Mechanism for Safety Critical Functions Operating on Automotive Controller Area Network Book in PDF, ePub and Kindle
Safety-critical systems in automotive design are facing new challenges associated with advancements in autonomous functionality and connectivity. One of those challenges is security in these systems. There are a multitude of different problems with all of these additional connectivity and sensing units. The focus of this thesis is on the internal communication of Network Control Systems(NCS) of a vehicle. The Controller Area Network (CAN) is the primary network used in safety-critical vehicle operation and is lacking inherent security. This thesis presents a security control mechanism for CAN that uses vehicle models to detect and mitigate malicious messages on CAN. The security control mechanism is an Intrusion Detection System (IDS) that uses an unknown input observer implementation to address stealth, replay, and covert attacks. The goal of this method is to address performance challenges in the authentication of an entire CAN bus. It uses vehicle dynamic behavior to authenticate messages rather than using encryption methods to require CAN message authentication when the vehicle is not under attack reducing the burden caused by implementing and continually using secure communication protocols on top of CAN. A case study on a throttle control request of an engine by an Autonomous Vehicle Control Unit (AVCU) test and demonstrate the security control mechanisms.