Provably-Secure Time-Bound Hierarchical Key Assignment Schemes |
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Authors: | Giuseppe Ateniese Alfredo De Santis Anna Lisa Ferrara Barbara Masucci |
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Affiliation: | 1. The Johns Hopkins University, Baltimore, MD, 21218, USA 2. Dipartimento di Informatica ed Applicazioni, Universit?? di Salerno, 84084, Fisciano (SA), Italy
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Abstract: | A time-bound hierarchical key assignment scheme is a method to assign time-dependent encryption keys to a set of classes in a partially ordered hierarchy, in such a way that each class can compute the keys of all classes lower down in the hierarchy, according to temporal constraints. |
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