Flaws in some self-healing key distribution schemes with revocation |
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| Authors: | Vanesa Daza |
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| Affiliation: | a Dept. Tecnologies de la Informació i les Comunicacions, Universitat Pompeu Fabra, C. Roc Boronat 138, 08018-Barcelona, Spain
b Dept. Matemàtica Aplicada IV, Universitat Politècnica de Catalunya, C. Jordi Girona 1-3, 08034-Barcelona, Spain |
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| Abstract: | Dutta and Mukhopadhyay have recently proposed some very efficient self-healing key distribution schemes with revocation. The parameters of these schemes contradict some results (lower bounds) presented by Blundo et al. In this paper different attacks against the schemes of Dutta and Mukhopadhyay are explained: one of them can be easily avoided with a slight modification in the schemes, but the other one is really serious. |
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| Keywords: | Cryptography Self-healing key distribution Lower bounds Polynomial interpolation |
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