Key Establishment for Layered Group-based Wireless Sensor Networks
Establishing pairwise keys for sensors is crucial to secure communications in Wireless Sensor Networks (WSNs). Several key pre-distribution schemes have been proposed to establish pairwise keys, but they are not scalable and suffer from a dramatic degradation of security when the number of compromised sensor exceeds a threshold. In this paper, we propose a Layered Group-based Key Establishment (LGKE) scheme, in which a logic top layer ensures the scalability through an Exclusion Basic System (EBS) technique while a logic low layer adopts a group-based key preload scheme to ensure the security. The security analysis and quantitative evaluation show the superiority of LGKE with regard to scalability, resilience, robustness and communication overhead.
Xueping Li, Dengfeng Yang and Rapinder Sawhney (2010) "Key Establishment for Layered Group-based Wireless Sensor Networks", International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol 5, No. 3, pp. 150-162.