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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Scalable Deniable Group Key Establishment
verfasst von : Kashi Neupane, Rainer Steinwandt, Adriana Suárez Corona
Erschienen in: Foundations and Practice of Security
Verlag: Springer Berlin Heidelberg
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The popular Katz-Yung compiler from CRYPTO 2003 can be used to transform unauthenticated group key establishment protocols into authenticated ones. In this paper we present a modification of Katz and Yung’s construction which maintains the round complexity of their compiler, but for ‘typical’ unauthenticated group key establishments adds authentication in such a way that deniability is achieved as well. As an application, a deniable authenticated group key establishment with three rounds of communication can be constructed.