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Sensors 2016, 16(10), 1606; doi:10.3390/s16101606

A Hybrid Secure Scheme for Wireless Sensor Networks against Timing Attacks Using Continuous-Time Markov Chain and Queueing Model

1,‡
,
2,†,‡
,
2,†,‡,* and 3
1
Department of Mathematics and Computer Science, Freie Universität Berlin, Berlin 14195, Germany
2
Shenzhen Institute of Radio Testing & Tech., Shenzhen 518000, China
3
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
*
Author to whom correspondence should be addressed.
Academic Editor: Rongxing Lu
Received: 14 April 2016 / Revised: 3 September 2016 / Accepted: 5 September 2016 / Published: 28 September 2016
(This article belongs to the Special Issue Security and Privacy in Sensor Networks)
View Full-Text   |   Download PDF [1378 KB, uploaded 28 September 2016]   |  

Abstract

Wireless sensor networks (WSNs) have recently gained popularity for a wide spectrum of applications. Monitoring tasks can be performed in various environments. This may be beneficial in many scenarios, but it certainly exhibits new challenges in terms of security due to increased data transmission over the wireless channel with potentially unknown threats. Among possible security issues are timing attacks, which are not prevented by traditional cryptographic security. Moreover, the limited energy and memory resources prohibit the use of complex security mechanisms in such systems. Therefore, balancing between security and the associated energy consumption becomes a crucial challenge. This paper proposes a secure scheme for WSNs while maintaining the requirement of the security-performance tradeoff. In order to proceed to a quantitative treatment of this problem, a hybrid continuous-time Markov chain (CTMC) and queueing model are put forward, and the tradeoff analysis of the security and performance attributes is carried out. By extending and transforming this model, the mean time to security attributes failure is evaluated. Through tradeoff analysis, we show that our scheme can enhance the security of WSNs, and the optimal rekeying rate of the performance and security tradeoff can be obtained. View Full-Text
Keywords: Markov chain; queueing model; side-channel attacks; random padding Markov chain; queueing model; side-channel attacks; random padding
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Meng, T.; Li, X.; Zhang, S.; Zhao, Y. A Hybrid Secure Scheme for Wireless Sensor Networks against Timing Attacks Using Continuous-Time Markov Chain and Queueing Model. Sensors 2016, 16, 1606.

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