UltraSoC and Canis Labs partner to secure the CAN bus
May 2020 by Marc Jacob
UltraSoC and Canis Automotive Labs announced a partnership that addresses one of the most serious cybersecurity vulnerabilities in the automotive industry: the lack of security features within the CAN bus, which is commonly used to interconnect in-vehicle systems such as brakes, steering, engine, airbags, door locks, and headlights.
The partnership between the two companies will yield hardware-based intrusion detection and mitigation techniques for common exploits on the CAN bus. These include automatic hardware anti-spoofing; defence against bit-level attacks such as the Bus-Off attack and bit-glitching; and resistance to denial of service (DoS) style attacks. The collaboration centers on the deployment of Canis Labs’ CAN-HG technology, a new fully-compatible augmentation of the standard CAN bus protocol that includes bus guardian security features, and has the added benefit of being able to carry payloads twelve times larger than standard CAN frames.
When combined with UltraSoC’s semiconductor IP for detection and mitigation of cyber threats, CAN-HG allows designers to secure their CAN bus designs at the hardware level. The cybersecurity capabilities enabled by the collaboration employ fast bits within the CAN-HG augmented part of a CAN frame to add security information to CAN frames. This can be used by UltraSoC’s protocol-aware monitoring hardware to identify and block suspicious or unauthorized traffic traveling over CAN. These new capabilities will be refined and proved for deployment as part of Secure-CAV: an ambitious project that seeks to improve the safety and security of tomorrow’s connected and autonomous vehicles (CAVs).
CAN is a hugely successful interconnect protocol which emerged in the 1980s in response to the need for an efficient, lightweight interconnection method that could cope with the harsh environments found in vehicles. Today it remains a common choice not only in the automotive industry but also in industrial, cyberphysical and robotics applications, where safety is paramount. But while it is physically robust, CAN is almost entirely lacking in cybersecurity features.
Most existing approaches to CAN security are software-based, meaning that they are often unable to react quickly enough to prevent protocol-level attacks. Because it is hardware based, a joint Canis Labs / UltraSoC solution can react quickly enough to prevent an attack from completing. This has two implications. First, many exploits rely on creating a “window of opportunity” during which the system is in a vulnerable or unknown state. A fast reaction time can eliminate this window and significantly improve the overall robustness of cybersecurity defenses. Second, CAN bus is used in many cyberphysical systems, in which elapsed time equates to distance traveled. A faster response time therefore has significant benefits in terms of mitigating the physical consequences of an attempted intrusion, better protecting the safety of citizens and infrastructure.