Research of High-Efficiency Network Security for In-Vehicle Ethernet based on FPU-RSA Encryption Algorithm

With the integration and penetration of the new generation of information and communication technologies into the automotive field, traditional industries such as vehicles and transportation have begun to become intelligent, networked and digital. The vehicle enhances the driving experience by connecting to external mobile devices such as Smart Phones, On-Board Diagnostics (OBD), and Bluetooth, while the vehicle is exposed to external cyber attacks and threats. Therefore, through the use of network security protection measures to protect the data information of autonomous vehicles, to achieve the safety of various electronic control systems of In-Vehicle Ethernet. This paper proposes the FPU-RSA encryption algorithm to address the network security issues of In-Vehicle Ethernet, and it is applied to encrypt and decrypt data information In-Vehicle Ethernet system. The simulation results show that the FPU-RSA encryption algorithm proposed in this study reduces the encryption time by 11% and decryption time by 22% compared with the traditional RSA encryption algorithm, thus comprehensively improving the network security performance of the In-Vehicle Ethernet.