Intra‐cluster key sharing in hierarchical sensor networks

Abstract

In hierarchical sensor networks, key sharing at the intra-cluster tier (i.e. how to establish pairwise keys between a sensor and its cluster head) is more challenging than that at inter-cluster tier. Despite some key management protocols have been proposed, there still lacks both secure and efficient one. In this study, the authors proposed an intra-cluster key sharing to overcome the security problems nowadays. The analysis proved that this proposed scheme has the following advantages by comparing with other schemes: (i) it is more efficient in saving the storage overheads and communication overheads; (ii) it improves the resilience against node capture attacks during and after initialisation; and (iii) it guarantees 100% connectivity at intra-cluster communication tier.

Optimal Cluster Based Key Management System Using Signcryption Algorithm for Wireless Sensor Networks

“…Enhanced unitalbased key pre-distribution scheme [23] providing high network scalability and good key sharing probability approximately lower bounded. An intra-cluster key sharing (IKS) scheme combined with low-energy key management (LEKM) protocol [24] for increasing the resilience against node capture during network initialization.…”

A New Hierarchical Key Management Scheme for Secure Clustering in Wireless Sensor Networks

“…Hierarchical WSNs are more often used in real applications because they can improve the network scalability and reduce the energy consumption [6,7]. Therefore, the hierarchical organization is a promising technique in WSNs to ensure the key management process.…”