A Secure Strategy for Location-Based Wireless Sensor Networks

Abstract

A Secure Strategy for Location-Based Wireless Sensor N A cluster-based secure strategy for wireless sensor networks is proposed. The two-dimension sensing area comprises a number of clusters, each of which contains four small squares called cells. The WSNs structure is a two-layer structure. The upper layer consists of all cluster heads and the lower layer consists of all ordinary sensors managed by their cluster heads. The cluster heads establish their pairwise keys through utilizing a key pre-distribution scheme based on cluster head identifications and the ordinary sensors establish their pairwise keys through employing a dynamic key management strategy based on exclusion-based systems (EBSs). Analysis and comparison show this scheme enhances the WSNs security, decreases WSNs communication consumption, saves cluster head and sensor energy expenditure, and prolongs the lifetime of both cluster heads and ordinary sensors.etworks