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Sensors 2016, 16(4), 509; doi:10.3390/s16040509

A Hybrid Key Management Scheme for WSNs Based on PPBR and a Tree-Based Path Key Establishment Method

1
College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China
2
Department of Computer Science, Tennessee State University, Nashville, TN 37209, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Neal N. Xiong and Xuefeng Liang
Received: 17 February 2016 / Revised: 29 March 2016 / Accepted: 4 April 2016 / Published: 9 April 2016
(This article belongs to the Special Issue Mobile Sensor Computing: Theory and Applications)
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Abstract

With the development of wireless sensor networks (WSNs), in most application scenarios traditional WSNs with static sink nodes will be gradually replaced by Mobile Sinks (MSs), and the corresponding application requires a secure communication environment. Current key management researches pay less attention to the security of sensor networks with MS. This paper proposes a hybrid key management schemes based on a Polynomial Pool-based key pre-distribution and Basic Random key pre-distribution (PPBR) to be used in WSNs with MS. The scheme takes full advantages of these two kinds of methods to improve the cracking difficulty of the key system. The storage effectiveness and the network resilience can be significantly enhanced as well. The tree-based path key establishment method is introduced to effectively solve the problem of communication link connectivity. Simulation clearly shows that the proposed scheme performs better in terms of network resilience, connectivity and storage effectiveness compared to other widely used schemes. View Full-Text
Keywords: wireless sensor networks; key management; tree-based; path key establishment; mobile sink wireless sensor networks; key management; tree-based; path key establishment; mobile sink
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Zhang, Y.; Liang, J.; Zheng, B.; Chen, W. A Hybrid Key Management Scheme for WSNs Based on PPBR and a Tree-Based Path Key Establishment Method. Sensors 2016, 16, 509.

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