Enhancing Certificate Revocation List Management in Vehicular Networks with Blockchain and Query Cumulative Filters

Abstract

As intelligent vehicles gradually become prevalent, the identity verification and data security in V2X communication are increasingly garnering attention. This study is dedicated to addressing the management and querying of revocation lists in vehicle-road cooperative environments, striving to enhance the reliability and trustworthiness of the revocation lists. By integrating blockchain technology and smart contracts, this paper ensures the immutability and transparency of certificate revocation data. The adoption of the SSMS multi-signature algorithm reduces the reliance on a single node, thereby enhancing the security of the system. In response to the security challenges faced by vehicles in cross-domain operations, this research introduces a verification mechanism based on zero-knowledge proofs, accomplishing secure vehicle verification while simultaneously protecting vehicle privacy. Further more, considering the need for communication security of vehicles under complex road conditions, this paper innovatively designs a query accumulative filter to support efficient identity verification.