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Exact Formulae for Resilience in Random Key Predistribution Schemes

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2 Author(s)
Dae Hyun Yum ; Dept. of Electr. Eng., POSTECH, Pohang, South Korea ; Pil Joong Lee

As wireless sensor networks are often deployed in adverse or hostile environments, key management schemes are required for sensor nodes. The random key predistribution (RKP) scheme is a probabilistic key management scheme where each node is preloaded with a subset of keys that are randomly selected from a pool of keys. If a pair of neighbor nodes have a common key, it can be used to establish a secure link between the nodes. The q-composite RKP scheme requires that a pair of neighbor nodes have at least q common keys for a secure link. In this article, we show that the previous security analysis (i.e., resilience against node capture) of the q-composite RKP scheme is inaccurate and present new formulae for resilience in the RKP scheme and the q-composite RKP scheme.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:11 ,  Issue: 5 )

Date of Publication:

May 2012

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