TB-Logger: Secure Vehicle Data Logging Method Using Trusted Execution Environment and Blockchain

With the development of IT technologies, event data recorder (EDR) devices are now installed in modern vehicles to record and analyze vehicle-related events. As recorded EDRs began be used as conclusive proof courts, many researchers turned their focus on developing methodologies that can protect from forgery attacks. In general, these existing methods generate verification values for EDR by using a digital signature algorithm. However, do not provide way stored an attacks emergency, such car accident, it is possible properly create value due unexpected sudden events like power supply problem. Thus, this paper, we propose TB-Logger, novel method protects even when there emergency situation. TB-Logger relies trusted execution environment (TEE) attacks, which ultimately result modification, reordering, deletion. addition, utilizes blockchain system store publicly verify generated during event. We evaluated practicality two real vehicles: Hyundai Avante CN7 Tesla Model 3. Through tests, confirmed without incurring any loss.