Pairwise Key Establishment Scheme in Heterogeneous Sensor Network
Sujun Li · Jisuanji gongcheng · 2011
Aiming at the security deficiency of the pre-distribution scheme for Heterogeneous Sensor Network(HSN),a security pairwise key establishment scheme based on key chain and deployment knowledge is proposed for HSN.The deployment area is divided into multiple cells,the HSN is divided into multiple clusters.Two nodes whose deployment cells are adjacent can establish a common key by using pre-distribution keys.After deployment,if two neighboring nodes can not establish a common key,the common key must be distributed by other high energy node.Theory analysis and simulation results show that the scheme makes much more improvement than the classical scheme for HSN on the memory overhead,the local connectivity rate,the resilience against node capture.