부산대학교 도서관

Vehicular Ad-hoc Networks (VANETs) allow communication among vehicles using some fixed equipment on roads. Vehicles share different kinds of information to improve road safety and provide travelers comfort using exchanged messages. However, falsified or modified messages can be propagated which affect the performance of the whole network and cause dangerous situations in roads such as accident, collision, traffic congestion, etc. In order to ensure security communication between vehicles, trust management can be used. Trust is a security concept used to build confident relations between vehicles. Hence, we propose a secure clustering mechanism for messages exchange in VANET. The main contributions provided by this paper concerns the clusters setting up based on vehicles velocity and then the cluster head computes the credibility of message based on the reputation of vehicles.