A Methodology of CAN Communication Encryption Using a shuffling algorithm

In-vehicle communication uses CAN Bus, and for this, communication speed and security are important. Since the current CAN communication is used without encryption, many cases have been reported of vehicle hacking over time. With the advent of autonomous driving and connected cars, vehicles no longer remain independent; they can be invaded from the outside and personal information such as vehicle location and driving habits can be accessed through the vehicle, which poses a serious threat to personal privacy and life. Therefore, communication data must be encrypted in order to increase the security of the communication. In this paper, data frames are encrypted using a shuffling algorithm in the CAN communication system environment. To put it more precisely, the data frame is divided into bits and structured into blocks, which are then shuffled for data hiding. This method determines the level of obfuscation based on blockage and shuffle criteria. The encryption time was measured by changing both. This suggest ways to increase the security and communication speed in the vehicle.