Hierarchical Grid-Based Pairwise Key Pre-distribution in Wireless Sensor Networks

Details Hierarchical Grid-Based Pairwise Key Pre-distribution in Wireless Sensor Networks Hierarchical Grid-Based Pairwise Key Pre-distribution in Wireless Sensor Networks

2008-03-07

arxiv.org/abs/0803.1111v1

Computer Science

Cryptography and Security

13 pages, 9 figures, 2 tables, to appear in the International Journal of Networks and Security

Scientific paper

The security of wireless sensor networks is an active topic of research where both symmetric and asymmetric key cryptography issues have been studied. Due to their computational feasibility on typical sensor nodes, symmetric key algorithms that use the same key to encrypt and decrypt messages have been intensively studied and perfectly deployed in such environment. Because of the wireless sensor's limited infrastructure, the bottleneck challenge for deploying these algorithms is the key distribution. For the same reason of resources restriction, key distribution mechanisms which are used in traditional wireless networks are not efficient for sensor networks. To overcome the key distribution problem, several key pre-distribution algorithms and techniques that assign keys or keying material for the networks nodes in an offline phase have been introduced recently. In this paper, we introduce a supplemental distribution technique based on the communication pattern and deployment knowledge modeling. Our technique is based on the hierarchical grid deployment. For granting a proportional security level with number of dependent sensors, we use different polynomials in different orders with different weights. In seek of our proposed work's value, we provide a detailed analysis on the used resources, resulting security, resiliency, and connectivity compared with other related works.

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