A Survey on Security and Privacy Approaches of Intelligent Vehicular Ad-Hoc Network (InVANET)

In last few years, Vehicular Ad-Hoc Network (VANET) becomes increasingly popular in many countries. It is an important element of the Intelligent Transportation Systems (ITSs). In a typical VANET, each vehicle is assumed to have an on-board unit (OBU) and there are road-side unit (RSU) installed along the roads. A trusted authority (TA) and application servers could be installed in the backend. As wireless ad-hoc network is also the base technology of Intelligent Vehicular Ad-Hoc Network (InVANET) as that of VANET, almost there is no specific protocol implemented which owing good security strategy. As we know, reason of this issue is most of wireless ad-hoc protocols has suffered from energy consumption problem and the protocols have to focus on reducing resource consumption. Although, it seems InVANET has better situation because energy has not critical position as its predecessor. But security has critical situation in InVANET similar to ad-hoc. Using InVANET is increasing and security architecture must be carefully designed especially when it becomes a worldwide InVANET which give service millions of vehicles in the roads. In this paper we are presenting a survey over security and privacy challenges for InVANET and different approaches used to provide security.