Secure Sector Based Bi-path Clustering and Routing Protocol for WSNs

Security and efficient routing are two important parameters in sensor networks. In this paper we propose SSBCR (Secured Sector Based Bi-path Clustering and Routing) protocol that takes both these two issues into consideration. It uses a bi-path routing algorithm to decrease the computational overhead as well as energy dissipation in the nodes. A key pre-distribution scheme is proposed such that nodes in the route share keys while those that are not in the route do not share keys with nodes that are in the route. Simulations have been done for both small and large areas, low and high density, on-route and non-route connectivity scenarios. Simulation results show that the proposed protocol not only provides security but also maximizes sensor network lifetime and achieves a high probability of connectivity, particularly when the network is large.