Group Based Authentication in V2V Network Using Decentralized Light Weight Protocol

Abstract

Vehicular ad hoc networks (VANETs) are an important communication paradigm in modern-day mobile
computing for exchanging live messages regarding traffic congestion, weather conditions, road conditions, and
targeted location-based advertisements to improve the driving comfort. In such environments security and intelligent
decision making are two important challenges needed to be addressed. In this paper, a trusted authority (TA) is
designed to provide a variety of online premium services to customers through VANETs. Therefore, it is important to
maintain the confidentiality and authentication of messages exchanged between the TA and the VANET nodes.
Hence, we address the security problem by focusing on the scenario where the TA classifies the users into primary,
secondary, and unauthorized users. In this paper, first, we present a dual authentication scheme to provide a high
level of security in the vehicle side to effectively prevent the unauthorized vehicles entering into the VANET. Second,
we propose a dual group key management scheme to efficiently distribute a group key to a group of users and to
update such group keys during the users’ join and leave operations. The major advantage of the proposed dual key
management is that adding/revoking users in the VANET group can be performed in a computationally efficient
manner by updating a small amount of information. The results of the proposed dual authentication and key
management scheme are computationally efficient compared with all other existing schemes discussed in literature,
and the results are promising.