Abstract
Enhancement of safety and security on road, and reduction in traffic congestion is the theme of Intelligent Transportation System (ITS). Vehicular Ad hoc Network as an integral part of ITS protects from Denial of Service attack and maintain Security Associations (SA) due to decentralized, open, dynamic, limited bandwidth and control overhead. Dynamic Time Stable Geocast (DTSG) routing protocol unable to protect from attacks of the intruder. Data authentication, Data integrity and non-repudiation are some security features which need to be taken into account for making geocast protocol robust and critically secured. This paper proposes algorithms for achieving the above mentioned goal of securing time stable geocast routing protocol in vehicular traffic environment. The proposed protocol is simulated in Network Simulator (ns2) and the results are compared with DTSG. The comparative analysis of results reveals the usefulness of the proposed protocol under security attack.
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