Deploying Proxy Signature in VANETs

We introduce a verifiable, self authenticating, and anonymous message delivery protocol for VANET communications using different implementations of proxy signature scheme, where RSU-to-OBU, OBU-to- RSU, and OBU-to-OBU message delivery issues have been addressed. An RSU-to-OBU message delivery scheme is developed, in which a message is protected against potential forgery launched by a malicious RSU. Also, a new proxy signature based approach is provided for message integrity and anonymity for the OBU message delivery. The total process is accountable. The security analysis confirms the validity of the proposed protocol.