关键词: 传感器网络, 对偶密钥, 簇头, 网络密钥暴露率

Abstract: Concerning the defects in key pre-distribution schemes such as storage heavyload, bad extendibility, a energy-efficient dynamic pairwise key establishment algorithm (EE-DPKEA) was proposed. The algorithm adopted the clustered-based scheme to establish pairwise keys, utilized the energy of each node in equilibrium and prolonged the life of sensor networks. Simulation results show that EE-DPKEA is better than the traditional key pre-distribution scheme in many aspects such as security, storage and communication overhead, key connectivity and energy load balancing.

Key words: sensor network, pairwise key, cluster heads, exposure rate of network key