A More Efficient Conditional Private Preservation Scheme in Vehicular Ad Hoc Networks

Abstract

It is a challenging issue to provide a secure and conditional anonymous authentication scheme in vehicle ad hoc networks (VANETs) with low storage space and computational cost. In 2008, Lu et al. proposed a conditional privacy preservation scheme called efficiency conditional privacy preservation (ECPP) protocol. The ECPP protocol provides conditional privacy preservation to vehicles in VANETs. That is, on one hand vehicles can achieve anonymous authentication in the network, on the other hand, allow to be traced and revoked if necessary. However, ECPP scheme suffers from high computational cost and large storage. In this scheme, an improved protocol based on the concept of ECPP protocol has been proposed to achieve more efficiency conditional privacy preservation (MECPP) scheme in VANETs. Comparing with ECCP, the computational cost of the proposed scheme has been decreased by about 54 % while the communication overhead has been reduced by about 10 % . At the same time, a lot of storage space has been saved.

Efficient Certificate-Less Aggregate Signature Scheme with Conditional Privacy-Preservation for Vehicular Ad Hoc Networks Enhanced Smart Grid System

“…In [ 41 ], having foreseen the problem of overburdened TA and sought to provide a solution they designed a scheme by using anonymous certificates but this was done at the expense of interactions between the infrastructures. In [ 42 ] et al, privacy protection for VANETs communications was achieved based on the technique of ID-based ring signature, but they failed to provide conditional privacy, since there was no any tracking mechanism in their algorithm [ 43 ]. Many more researchers demonstrated the need to formulate robust schemes in terms of security and privacy protection.…”