The controller area network (CAN) is the most widely used in-vehicle network to communicate among electronic control units. However, the CAN does not provide security functionalities, such as encryption or message authentication. Attackers can analyze CAN logs and inject valid messages based on the analysis to cause malfunctions. Thus, security functions appropriate to the CAN environment are required to prevent attacks. In this paper, we propose a dynamic identifier (ID) virtualization method that prevents CAN logs from being analyzed and makes it difficult for attackers to generate valid messages. We implement a virtualization module to perform dynamic ID virtualization and measure the delay and computational overhead caused by the proposed method. Additionally, we demonstrate the security of the proposed method.INDEX TERMS Controller area network, vehicular security, network security, in-vehicle network.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.