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Sensors 2014, 14(1), 1877-1897; doi:10.3390/s140101877

A Secure Trust Establishment Scheme for Wireless Sensor Networks

*  and
Department of Information and Communication Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Kyongsan 712-749, Gyeongsangbuk-do, Korea
* Author to whom correspondence should be addressed.
Received: 14 October 2013 / Revised: 10 January 2014 / Accepted: 15 January 2014 / Published: 22 January 2014
(This article belongs to the Section Physical Sensors)
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Trust establishment is an important tool to improve cooperation and enhance security in wireless sensor networks. The core of trust establishment is trust estimation. If a trust estimation method is not robust against attack and misbehavior, the trust values produced will be meaningless, and system performance will be degraded. We present a novel trust estimation method that is robust against on-off attacks and persistent malicious behavior. Moreover, in order to aggregate recommendations securely, we propose using a modified one-step M-estimator scheme. The novelty of the proposed scheme arises from combining past misbehavior with current status in a comprehensive way. Specifically, we introduce an aggregated misbehavior component in trust estimation, which assists in detecting an on-off attack and persistent malicious behavior. In order to determine the current status of the node, we employ previous trust values and current measured misbehavior components. These components are combined to obtain a robust trust value. Theoretical analyses and evaluation results show that our scheme performs better than other trust schemes in terms of detecting an on-off attack and persistent misbehavior.
Keywords: trust establishment; wireless sensor networks; misbehavior detection trust establishment; wireless sensor networks; misbehavior detection
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ishmanov, F.; Kim, S.W.; Nam, S.Y. A Secure Trust Establishment Scheme for Wireless Sensor Networks. Sensors 2014, 14, 1877-1897.

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