Lightweight Security Protection System Design for Complex V2X Scenarios

The vehicular network's external communication layer, known as Vehicle-to-Everything (V2X), serves as the information exchange core of intelligent transportation systems while facing diversified security threats and privacy leakage risks. This paper systematically analyse the three-layer technical architecture and typical security threats of out-of-vehicle network, and design a security model for the threats in the areas of device identity security, intrusion detection, and privacy protection. Research shows that the security protection capability of out-of-vehicle network can be effectively improved through the synergy of encryption authentication, intelligent detection, and privacy enhancement techniques.