A Secure and Scalable Rekeying Mechanism for Hierarchical Wireless Sensor Networks

Abstract

SUMMARYMany applications of wireless sensor networks (WSNs) require secure group communications. The WSNs are normally operated in unattended, harsh, or hostile environment. The adversaries may easily compromise some sensor nodes and abuse their shared keys to inject false sensing reports or modify the reports sent by other nodes. Once a malicious node is detected, the group key should be renewed immediately for the network security. Some strategies have been proposed to develop the group rekeying protocol, but most of existing schemes are not suitable for sensor networks due to their high overhead and poor scalability. In this paper, we propose a new group rekeying protocol for hierarchical WSNs with renewable network devices. Compared with existing schemes, our rekeying method possesses the following features that are particularly beneficial to the resource-constrained large-scale WSNs: (1) robustness to the node capture attack, (2) reactive rekeying capability to malicious nodes, and (3) low communication and storage overhead. key words: key management, group rekeying, hierarchical wireless sensor network, security

Secure and Energy-Efficient Data Collection in Wireless Sensor Networks

“…The main content in current years key management, encryption, and authentication Hierarchical key management of sensor network [1], lightweight, and strong security key agreement [2]. Secure routing Multipath security routing protocol [3], hierarchical sensor network security routing protocol [4].…”

“…Hierarchical key management of sensor network [1], lightweight, and strong security key agreement [2].…”