Trust Evaluation of Topological Nodes in Intelligent Connected Vehicles Communication Network under Zero-Trust Environment

This article examines the evaluation of trust in communication topology nodes within intelligent connected vehicles operating under a zero-trust environment. We present a trust model specifically designed for the zero-trust environment. Initially, we determine the comprehensive trust function of communication topology nodes in ICVs under the zero-trust environment by employing a weighted calculation of the node importance function and the node trust function. The trust function gradually diminishes over time. Next, we establish a communication topology model under the zero-trust environment, assess the consistency of the ICV queue, and investigate the impact of varying node trust levels on the entire communication topology. Finally, we utilize the two-predecessor following topology structure as an illustration to validate the effectiveness and feasibility of our proposed framework for evaluating the trust of communication topology nodes in ICVs within a zero-trust environment. This study serves as a valuable resource for enhancing the security of ICV communication.