CAFS: Cluster based Authentication scheme for Filtering False data in wireless Sensor network

Abstract: Wireless sensor is an emerging technology that has resulted in variety of application. Wireless sensor networks offer unique benefits and versatility for those locations and applications where human interaction is less feasible, examples of which may be to monitor volcanoes, movements inside enemy territory or temperature and humidity deep inside a machinery, to count a few. Wireless sensor networks can provide low cost solution to verity of real-world problems. Due to its tiny size it is easy to be compromised. So when a node is compromised it is easy to inject false data in to the network. It is burden to sink to verify the false data. In this paper, we propose a Cluster based authentication scheme for filtering injected false data in wireless sensor network. Based on elliptical curve cryptography, Diffe - Hellman key management technique and using Cooperative authentication scheme with CNR based MAC code technique; the proposed scheme can save energy by early detecting and filtering the majority of injected false data with minor extra overheads at the en-route nodes. In addition, only a very small fraction of injected false data needs to be checked by the sink, which thus largely reduces the burden of the sink. Both theoretical and simulation results are given to demonstrate the effectiveness of the proposed scheme in terms of high filtering probability and energy saving.

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