Certificateless Signature Scheme with Batch Verification for Secure and Privacy-Preserving V2V Communications in VANETs

The importance of designing efficient and secure vehicular ad hoc networks (VANETs), for example to address pressing traffic-related challenges in busy cities, is crucial but challenging. For example, existing approaches may suffer from vehicle-to-vehicle (V2V) communication-related limitations such as certificate management, key escrow, and performance. Seeking to contribute to the knowledge gap, we propose a new secure and privacy-preserving scheme for V2V communications. Our proposal is based on a new provably secure certificateless signature scheme with batch verification, which eliminates the need for certificates while ensuring better efficiency. Our performance and security evaluations demonstrate that the proposed approach overcomes our previously discussed limitations while achieving both message authentication and conditional privacy. In addition, we also shown that it incurs low overhead.