Distributed trust & time management strategy in VANETs

Vehicular Ad-hoc Network (VANET) is a sub disciple of Mobile Ad-Hoc Networks. VANET provides wireless communication among vehicles and vehicle to road side equipments. The communication between vehicles is used for safety, comfort and entertainment (convenience). The performance of communication depends on how better the routing takes place in the network. Routing of data depends on the routing protocols being used in network. The life saving factor is also the key issue in this regard. Trust is key part of security and it is undoubtedly necessary to develop trust in vehicular network. Distributed trust management in VANET is a challenging task due to the lack of infrastructure, openness of wireless links and the usually highly dynamic network topology. In this paper, we have studied special characteristics of VANETs, existing trust management schemes, and proposed a distributed trust management strategy which helps in evaluation of time by the vehicle that would like to know whether he can trust the vehicle that broadcast the message.