A Single-Hop Based Fast Certificate Revocation Protocol in VANET

A vehicular ad hoc network (VANET) uses vehicles as mobile nodes to create a network. The increasing number of vehicle on road creates alot of problem to the vehicle driver as well as passengers. VANET is network which is developed to face these situations and provide road safety and comfortable journey to the driver. In this network each vehicle can communicate to other vehicle and share the rode condition to each other. By shared information in the network, drivers take its own decision. So each messages hared in the network should be authentic if not, a wrong information leads to dangers situation for the driver. If a vehicle is sharing a wrong information it must be removed from the communicating network by adding its certificates in the Certificate Revocation List (CRL). Here we propose a method, how the certificate of vehicle is revoke when it misbehaves. In our proposed method we use a fully trusted vehicle i.e. RTO Vehicle on the road. There vocation decision is taken by RTO vehicle which observe the behavior of vehicle before revoking it. It also observes the position of malicious vehicle in its range and inform to other vehicle in the proximity of malicious vehicle. This method significantly improves the revocation process speed and distribution of latest CRL in the network very fast.

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