Smali code injection4/11/2023 ![]() ![]() In this paper, we propose an algorithm that can remove up to 15 bits from frames compressed with the Triple ID algorithm. However, since the Triple ID algorithm uses six header bits, there is a problem associated with low data compression efficiency. ![]() The Triple ID algorithm ensures every CAN frame is authenticated by at least 4 bytes of MAC without changing the original CAN protocol. Recently, the Triple ID algorithm has been proposed to create additional space in the data field of the CAN frame. Therefore, space for transmitting the MAC is required within the CAN frame. To authenticate a data frame, a message authentication code (MAC) needs to be transmitted with the CAN data frame. Encryption and authentication techniques can be applied to CAN data frames to enhance security. Information security in a controller area network (CAN) is becoming more important as the connections between a vehicle’s internal and external networks increase.
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