A Multi-level Fuzzy Comprehensive Evaluation Approach for Message Verification in VANETs

Vehicular ad-hoc networks (VANETs) are a promising new research area with the potential to revolutionize intelligent transportation systems (ITS) in the near future. Equipping vehicles with computers and wireless communication devices, VANETs have led to new applications including real-time monitoring of traffic, dynamic route scheduling and emergency information dissemination. However, the security of communicated information is of paramount importance. In this paper, we propose a novel VANET trust system that utilizes the multi-level fuzzy comprehensive evaluation (FCE) model together with an Analytic Hierarchy Process (AHP) to evaluate the trustworthiness and accuracy of information propagating in a VANET. Experimental results demonstrate that the proposed approach can detect malicious nodes efficiently without complicated key exchange processes and does not compromise on privacy.