Indifferentiability of Confusion-Diffusion Networks

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Paper 2015/680

Indifferentiability of Confusion-Diffusion Networks

Yevgeniy Dodis, Tianren Liu, Martijn Stam, John Steinberger

Abstract

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.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint. MINOR revision.
Keywords: symmetric-key cryptography block ciphers substitution-permutation networks
Contact author(s): jpsteinb @ gmail com
History: 2015-10-15: revised; 2015-07-06: received; See all versions
Short URL: https://ia.cr/2015/680
License: CC BY