2008 | OriginalPaper | Buchkapitel
On the Indifferentiability of the Sponge Construction
verfasst von : Guido Bertoni, Joan Daemen, Michaël Peeters, Gilles Van Assche
Erschienen in: Advances in Cryptology – EUROCRYPT 2008
Verlag: Springer Berlin Heidelberg
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In this paper we prove that the sponge construction introduced in [4] is indifferentiable from a random oracle when being used with a random transformation or a random permutation and discuss its implications. To our knowledge, this is the first time indifferentiability has been shown for a construction calling a random permutation (instead of an ideal compression function or ideal block cipher) and for a construction generating outputs of any length (instead of a fixed length).