ID-based Safety Message Authentication for Security and Trust in Vehicular Networks

We present a safety message authentication scheme for vehicular ad hoc networks using an ID-based signature and verification mechanism. An ID-based technique offers a certificate-less public key verification, while a proxy signature provides flexibilities in message authentication and trust management. In this scheme, we incorporate an ID-based proxy signature framework with the standard ECDSA for VANET´s road-side unit (RSU) originated safety application messages. Also, forwarding of signed messages are specially handled to ensure the trust and authentication of RSU´s application messages. We claim that this scheme is resilient against all major security threats and also efficient in terms of computation complexity.