CBKE: Chord-Based Key Establishment Schemes for Wireless Sensor Networks
Zhijie Jerry Shi, Bing Wang, Fan Zhang · WORLD SCIENTIFIC eBooks · 2010
Because of limited resources at sensor nodes, sensor networks typically adopt symmetric-key algorithms to provide security functions such as protecting com-munications between nodes. In order to use symmetric-key algorithms, two nodes need to establish a secret session key first. In this chapter, we describe a novel chord-based key establishment (CBKE) protocol that allows any pair of nodes in a sensor network to establish a secret session key. CBKE is a generalized deterministic key establishment scheme that provides great flexibility for balanc-ing memory overhead, reliability, and communication cost. We also analyze the properties of CBKE and explore the performance trade-offs using simulation. As wireless sensor networks are adopted in more and more applications, the secu-rity of sensor networks becomes increasingly important because sensor nodes are deployed in the field and communicate through wireless channels, thus vulnerable to attacks of many kinds. Like in many other systems, security goals in wire-