Revocation Protocol for Group Signatures in VANETs: A Secure Construction

Abstract

Vehicular ad hoc networks (VANETs) enable wireless communication between vehicles and roadside infrastructure to provide a safer and more efficient driving environment. However, due to VANETs wireless nature, vehicles are exposed to several security attacks when they join the network. In order to protect VANETs against misbehaviours, one of the vital security requirements is to revoke the misbehaved vehicles from the network. Some existing revocation protocols have been proposed to enhance security in VANETs. However, most of the protocols do not efficiently address revocation issues associated with group signature-based schemes. In this paper, we address the problem by constructing a revocation protocol particularly for group signatures in VANETs. We show that this protocol can be securely and efficiently solve the issue of revocation in group signature schemes. The theoretical analysis and simulation results demonstrate our work is secure against adversaries and achieves performance efficiency and scalability.

Securing Anonymous Authenticated Announcement Protocol for Group Signature in Internet of Vehicles

“…For revocation and law enforcement purposes, the check its local database to link with ' identity. We adopt the revocation protocol from our previous work in [20] and refer the readers to [20] for in depth understanding of the revocation phase.…”

“…Meanwhile, revocation is supported by the who maintains some trapdoor information to revoke dishonest vehicles. For an elaboration of the revocation technique, we refer the readers to our previous work in [20].…”

“…If any dispute arise, the misbehaved vehicle is traceable by the TP and the said vehicle could not deny having sent the message. If proven misbehaved, it will be revoked from further participation in the network [20].…”