Abstract
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).
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Bertoni, G., Daemen, J., Peeters, M., Van Assche, G. (2008). On the Indifferentiability of the Sponge Construction. In: Smart, N. (eds) Advances in Cryptology – EUROCRYPT 2008. EUROCRYPT 2008. Lecture Notes in Computer Science, vol 4965. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-78967-3_11
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DOI: https://doi.org/10.1007/978-3-540-78967-3_11
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