Improving Data Confidentiality and Integrity for Data Aggregation in Wireless Sensor Networks

Rabindra BISTA  Yong-Ki KIM  Myoung-Seon SONG  Jae-Woo CHANG  

IEICE TRANSACTIONS on Information and Systems   Vol.E95-D   No.1   pp.67-77
Publication Date: 2012/01/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E95.D.67
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Trust, Security and Privacy in Computing and Communication Systems)
Category: Trust
wireless sensor network,  data aggregation,  data integrity,  data privacy,  signature,  

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Since wireless sensor networks (WSNs) are resources-constrained, it is very essential to gather data efficiently from the WSNs so that their life can be prolonged. Data aggregation can conserve a significant amount of energy by minimizing transmission cost in terms of the number of data packets. Many applications require privacy and integrity protection of the sampled data while they travel from the source sensor nodes to a data collecting device, say a query server. However, the existing schemes suffer from high communication cost, high computation cost and data propagation delay. To resolve the problems, in this paper, we propose a new and efficient integrity protecting sensitive data aggregation scheme for WSNs. Our scheme makes use of the additive property of complex numbers to achieve sensitive data aggregation with protecting data integrity. With simulation results, we show that our scheme is much more efficient in terms of both communication and computation overheads, integrity checking and data propagation delay than the existing schemes for protecting integrity and privacy preserving data aggregation in WSNs.