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| Highly Resilient Key Distribution Strategy for Multi-level
Heterogeneous Sensor Networks by Using Deployment Knowledge |
| WANG Chih-hung (王智弘), WEI Shih-yi (魏仕益) |
(Department of Computer Science and Information
Engineering, National Chiayi University, Chiayi 60004) |
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Abstract Abstract: The most important problem in the security of wireless sensor
network (WSN) is to distribute keys for the sensor nodes and to establish a
secure channel in an insecure environment. Since the sensor node has limited
resources, for instance, low battery life and low computational power, the
key distribution scheme must be designed in an efficient manner. Recently
many studies added a few high-level nodes into the network, called the
heterogeneous sensor network (HSN). Most of these studies considered an
application for two-level HSN instead of multi-level one. In this paper, we
propose some definitions for multi-level HSN, and design a novel key
management strategy based on the polynomial hash tree (PHT) method by using
deployment knowledge. Our proposed strategy has lower computation and
communication overheads but higher connectivity and resilience.
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Received: 10 March 2011
Published: 29 October 2011
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Corresponding Authors:
WANG Chih-hung (王智弘),
E-mail: wangch@ncyu.edu.tw
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