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Sensors 2010, 10(8), 7347-7370; doi:10.3390/s100807347

Location-Aware Dynamic Session-Key Management for Grid-Based Wireless Sensor Networks

Department of Computer Science and Information Engineering, Chaoyang University of Technology Taichung, Taiwan
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Received: 20 June 2010 / Revised: 5 July 2010 / Accepted: 15 July 2010 / Published: 4 August 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

Security is a critical issue for sensor networks used in hostile environments. When wireless sensor nodes in a wireless sensor network are distributed in an insecure hostile environment, the sensor nodes must be protected: a secret key must be used to protect the nodes transmitting messages. If the nodes are not protected and become compromised, many types of attacks against the network may result. Such is the case with existing schemes, which are vulnerable to attacks because they mostly provide a hop-by-hop paradigm, which is insufficient to defend against known attacks. We propose a location-aware dynamic session-key management protocol for grid-based wireless sensor networks. The proposed protocol improves the security of a secret key. The proposed scheme also includes a key that is dynamically updated. This dynamic update can lower the probability of the key being guessed correctly. Thus currently known attacks can be defended. By utilizing the local information, the proposed scheme can also limit the flooding region in order to reduce the energy that is consumed in discovering routing paths.
Keywords: attack; grid-based; key management; security; wireless sensor networks attack; grid-based; key management; security; wireless sensor networks
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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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Chen, C.-L.; Lin, I.-H. Location-Aware Dynamic Session-Key Management for Grid-Based Wireless Sensor Networks. Sensors 2010, 10, 7347-7370.

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