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Cichon, Golebiewski and Kutylowski proposed a technique for "Key redistribution" in sensor networks. The idea is that long-term keys held by the sensor nodes are used to encrypt temporal keys that a base station then broadcasts to the network. The temporal keys are used as session keys by the nodes in the sensor network. It is argued that this provides increased connectivity and resilience as compared to a standard Eschenauer-Gligor key predistribution scheme, as well as providing some additional advantages. In this paper, the authors provide some simpler proofs of some results from. As well, they give a precise analysis of the resilience of Cichon, Golebiewski and Kutylowski's scheme, and they discuss modifications of the scheme based on defining a suitable intersection threshold.
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