06-01-2016, 04:05 PM
Abstract
In vehicular Ad hoc Networks, the privacy protection is one of the major requirements. Since there are huge number of vehicles on our highways and city roads there must be possibility of attacks. To protect the privacy of vehicles, one solution is to hide the vehicle’s identity with the use of pseudonym keys (i.e, temporary identities). Each vehicle uses its pseudonym key to communicate with other vehicles and road side units. The main effort of this work is to provide a solution towards privacy protection in vehicular Ad hoc Networks. Initially, we view vehicular ad hoc networks having non-overlapping sub networks referred to be a cell. Each cell with small geographic area having a pseudonym server which generates a list of pseudonyms using capacity planning algorithm. The Diffie Hellman Key Exchange scheme is also used to increase privacy protection. Our another effort is to reduce the routing overhead by using Hybrid Location based Ad hoc Routing (HLAR) protocol for routing pseudonyms and further communication. The accurate results are obtained and the performance is compared with reactive by detailed simulations.
Introduction
Vehicular ad hoc networks (VANETs) are highly mobile wireless network technology that is implemented to help traffic monitoring, vehicular safety, and other commercial applications. A vehicular ad hoc network uses moving vehicles as nodes in a network in order to create a mobile network. An accurate position of vehicles can be estimated by using global positioning systems or on-board sensors. VANETs are used for short range, high-speed communication among nearby vehicles, and between vehicles and roadside infrastructures.
Within VANETs, there are huge number of vehicles on our highways and city streets, leads to possibilility of severe attacks and routing overhead [6]. So the scalable and robust privacy protection must be needed. In this paper, the Diffie Hellman Key Exchange technique is used in order to improve privacy protection especially solves man-in-the-middle-attacks. Then the routing overhead is also reduced by using hybrid location based Ad hoc routing.
Conclusion
In this paper we have proposed a Diffie Hellman Key Exchange scheme to improve the privacy protection especially against the passive attacks in vehicular ad hoc networks. Then the HLAR protocol is used to reduce the routing overhead in vehicular ad hoc networks. NS2 is chosen to simulate this algorithm.
For further work we concentrate on a Directed clustering Protocol (DCP) [7] that increases the life time of network can be used together with the HLAR Routing algorithm. DCP is a clustering algorithm. Clustering is a new approach to efficiently utilize the energy of sensor nodes. This routing mechanism will come up with better throughput, energy consumption and less packet loss.