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Sensors 2014, 14(9), 16235-16257; doi:10.3390/s140916235

Energy-Efficient Privacy Protection for Smart Home Environments Using Behavioral Semantics

1
Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-Daero, Hyeonpung-Myeon, Dalseong-Gun, Daegu 711-873, Korea
2
Northern Cyprus Campus, Middle East Technical University, Mersin 10, Turkey
*
Author to whom correspondence should be addressed.
Received: 29 May 2014 / Revised: 18 August 2014 / Accepted: 25 August 2014 / Published: 2 September 2014
(This article belongs to the Special Issue Wireless Sensor Networks and the Internet of Things)
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Abstract

Research on smart environments saturated with ubiquitous computing devices is rapidly advancing while raising serious privacy issues. According to recent studies, privacy concerns significantly hinder widespread adoption of smart home technologies. Previous work has shown that it is possible to infer the activities of daily living within environments equipped with wireless sensors by monitoring radio fingerprints and traffic patterns. Since data encryption cannot prevent privacy invasions exploiting transmission pattern analysis and statistical inference, various methods based on fake data generation for concealing traffic patterns have been studied. In this paper, we describe an energy-efficient, light-weight, low-latency algorithm for creating dummy activities that are semantically similar to the observed phenomena. By using these cloaking activities, the amount of fake data transmissions can be flexibly controlled to support a trade-off between energy efficiency and privacy protection. According to the experiments using real data collected from a smart home environment, our proposed method can extend the lifetime of the network by more than 2× compared to the previous methods in the literature. Furthermore, the activity cloaking method supports low latency transmission of real data while also significantly reducing the accuracy of the wireless snooping attacks. View Full-Text
Keywords: privacy; wireless sensor networks; activities of daily living privacy; wireless sensor networks; activities of daily living
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Park, H.; Basaran, C.; Park, T.; Son, S.H. Energy-Efficient Privacy Protection for Smart Home Environments Using Behavioral Semantics. Sensors 2014, 14, 16235-16257.

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