Application and Challenges of SecOC Technology in CAN Bus

SecOC (Security Onboard Communication) technology is a technology used to improve the security of CAN bus systems. It can effectively prevent replay attacks and data tampering attacks by introducing freshness value and message authentication code (MAC) mechanism. However, since SecOC technology needs to calculate MAC and verify the freshness value for each message, this may have a certain impact on communication bandwidth and system performance. Therefore, when designing and using SecOC technology, it is necessary to weigh the relationship between its security and system performance to ensure that the system can provide sufficient security while maintaining good performance.