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Indifferentiability of Confusion-Diffusion Networks, by Yevgeniy Dodis, Tianren Liu, Martijn Stam, John Steinberger

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We show the first positive results for the indifferentiability security of the confusion-diffusion networks (which are extensively used in the design of block ciphers and hash functions). In particular, our result shows that a constant number of confusion-diffusion rounds is sufficient to extend the domain of a public random permutation.

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