With the rapid development and popularization of vehicle networking technology, the interconnectivity has greatly improved, while it has also brought significant security risks. To address these security challenges, secure chips have been introduced into vehicle systems to protect sensitive data and perform secure identity recognition. A security chip is a hardware solution specifically designed to protect systems from malicious attacks and unauthorized access. In the field of smart cars, it is usually embedded in the automotive electronic control unit (ECU) to provide multi-level security protection. The security chip prevents physical attacks through physical security measures, such as preventing violent disassembly, fault attacks or  channel detection attacks. The hardware design of security chips have passed rigorous security level evaluation and certification with high interference resistance and protection capabilities.