Energy and Communication Efficient Group Key Management Protocol for Hierarchical Sensor Networks

- In this paper, we describe a group key management protocol for hierarchical sensor networks where instead of using pre-deployed keys, each sensor node generates a partial key dynamically using a function. The function takes partial keys of its children as arguments. The design of the protocol is motivated by the fact that traditional cryptographic techniques are impractical in sensor networks because of associated high energy and computational overheads. The group key management protocol supports the establishment of two types of group keys; one for the nodes within a group (intra-cluster), and the other among a group of cluster head (inter-cluster). The protocol handles freshness of the group key dynamically, and eliminates the involvement of a trusted third party (TTP). We have experimentally analyzed the time and energy consumption in broadcasting partial keys and the group key under two sensor routing protocols (Tiny-AODV and Tiny-Diffusion) by varying the number of nodes and key...

• Type: Conference
• Year: 2006
• Where: SUTC
• Authors: Biswajit Panja, Sanjay Kumar Madria, Bharat K. Bhargava
• Keywords: Group Key, Key Management Protocol, Partial Keys, SUTC 2006