A Privacy-Preserving Decentralized Group-Authentication Protocol For VANETS
Vehicular ad hoc networks (VANETs) are an instance of mobile ad hoc networks that aim to enhance the safety
and the efficiency. In vehicular ad hoc networks(VANETs) raise challenges such as certificate distribution and revocation,
avoidance of computation and communication bottlenecks, and reduction of the strong reliance on tamper-proof devices.
This paper efficiently copes with these challenges with a decentralized group-authentication protocol in the sense that the
group is maintained by each roadside unit (RSU) rather than by a centralized authority, as in most existing protocols that are
employing group signatures. In our proposal Vehicles entering the group can anonymously broadcast vehicle-to-vehicle
(V2V) messages, which can be instantly verified by the vehicles in the same group (and neighboring groups). Later, if the
message is found to be false, a third party can be invoked to disclose the identity of the message originator.