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Securing and Region Based Algorithms For Wireless Sensor Networks

M.M.Chithra, A.Gayathri, S. Selva Birunda

The knowledge of sensors’ locations is crucial information for many applications in Wireless Sensor Networks. Previous verification schemes either require group-based deployment knowledge of the sensor field, or depend on expensive or dedicated hardware, thus they cannot be used for low-cost sensor networks. In this paper, we propose a region based system that performs both on-spot and in-region location verifications. The on-spot verification intends to verify whether the locations claimed by sensors are far from their true spots beyond a certain distance. We propose two algorithms that detect abnormal locations by exploring the inconsistencies between sensors claimed locations and their neighborhood observations. We study how to derive the verification region for different applications and design a probabilistic algorithm to compute in-region confidence for each sensor. They are robust in the presence of malicious attacks that are launched during the verification process. By using the location based pseudorandom authentication protocol we can overcome the problems which all are occurred by this algorithms.