Energy-Efficient Hybrid Key Management Protocol for Wireless Sensor Networks

Tim Landstra ； Sarangapani Jagannathan ； Maciej Zawodniok

《International Journal of Network Security》 9卷2期 (2009/09) Pp. 121-134

https://doi.org/10.6633/IJNS.200909.9(2).04

並列摘要

In this paper, an energy-efficient hybrid key management (EHKM) protocol is proposed in which the heterogeneous security requirements of a wireless sensor network are considered to provide differing levels of security with mini- mum communication overhead. Additionally, it allows the dynamic creation of high security subnetworks within the wireless sensor network and provides subnetworks with a mechanism for dynamically creating a secure key using a novel and dynamic group key management protocol. The proposed energy-efficient protocol utilizes a combination of pre-deployed group keys and initial trustworthiness of nodes to create a level of trust between neighbors in the network. This trust is later used to allow secure communication between neighbors when creating a dynamic, high security subnetwork within the sensor network. This static and dynamic key management combination creates a hybrid key management protocol. Analysis of the pro- posed protocol with network and cluster sizes and different node failures is performed using the Ns2 network simulator. Additionally, the protocol is compared to other protocols, for example LEAP and a recent dynamic group key management protocol. Additionally, the security of the proposed protocol is analyzed against various attacks by an adversary. Also the overhead due to communication and computation is investigated.

並列關鍵字

Key management ； sensor network security ； wireless security