An ID-based Framework Achieving Privacy and Non-Repudiation in Vehicular Ad Hoc Networks

Security requirements should be integrated into the design of vehicular ad hoc networks (VANETs), which bear unique features like road-safety and life-critical message dissemination. In this paper, we propose a security framework for VANETs to achieve privacy desired by vehicles and non-repudiation required by authorities, in addition to satisfying fundamental security requirements including authentication, message integrity and confidentiality. The proposed framework employs an ID-based cryptosystem where certificates are not needed for authentication. It increases the communication efficiency for VANET applications where the real-time constraint on message delivery should be guaranteed. We also briefly review the requirements for VANET security and verify the fulfillment of our proposed framework against these requirements.