access icon free Intra-cluster key sharing in hierarchical sensor networks

© The Institution of Engineering and Technology
Received 24/04/2012, Accepted 21/02/2013, Revised 26/01/2013, Published

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.

Inspec keywords: protocols; telecommunication security; wireless sensor networks

Other keywords: security problems; communication overheads; intra-cluster communication tier; cluster head; intra-cluster key sharing; wireless sensor networks; hierarchical sensor networks; node capture attacks; key management protocols; storage overheads; intra-cluster tier

Subjects: Protocols; Wireless sensor networks

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