Towards Scalable and Privacy-Preserving Trust Management for C-ITS Deployment in Ireland

Abstract

Transport Infrastructure Ireland (TII) commissioned a cooperative intelligent transport system (C-ITS) pilot. Although the European C-ITS Security Credential Management System (EU CCMS) and European Telecommunications Standards Institute Public Key Infrastructure (ETSI PKI) standards offer a foundation for secure Vehicle-to-everything (V2X) communication, challenges persist in scalability, latency, revocation, and misbehavior detection. This work proposes a hybrid framework, with improvements including blockchain-based revocation, decentralized trust models, and privacy preservation using pseudonym rotation and zero-knowledge proofs, thus extending existing standards.