A Secure Routing Protocol for Clustered Sensor Networks

Numerous cluster-based key management schemes have been proposed to secure sensor networks. Nevertheless, most existing schemes did not take the legitimacy of the cluster- head into consideration, which might highly vulnerable to several attacks such as sinkhole; wormhole and selective-forwarding, besides, the network should deal with an addition of new nodes and deletion of nodes being captured. In this paper, a modification of dynamic rekeying distribution was presented to secure communication in cluster-based protocols. All the communications in the protocols are properly authenticated using elliptic curve digital signature scheme. The simulation results demonstrate that our proposal SRC (secure rotation of cluster-head) is more energy-efficient compared to Sec-LEACH and GS-LEACH and have better scalability as well as resilience to node capture.