Abstract
Past researches on sensor network routing have been focused on efficiency and effectiveness of data dissemination. Few of them considered security issue during the protocol design time. Security is very important for many sensor network applications. Studies and experiences have shown that considering security during design time is the best way to provide security for routing. In this paper, we present a novel secure cell relay (SCR) routing protocol for sensor networks. SCR routing protocol is resistant to several kinds of attacks on sensor networks, including selective forwarding, sinkhole, wormhole, Sybil, hello flooding attacks, etc. SCR is also an energy efficient routing protocol with acceptable security overhead. SCR routing utilizes the fact that sensor nodes (in most sensor networks) are dense, static and location-aware, to achieve good security, high delivery ratio and low energy consumption, which is confirmed by our simulations.