Cryptology ePrint Archive: Report 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.

Category / Keywords: foundations / symmetric-key cryptography, block ciphers, substitution-permutation networks

Date: received 6 Jul 2015, last revised 15 Oct 2015

Contact author: jpsteinb at gmail com

Available format(s): PDF | BibTeX Citation

Version: 20151015:075116 (All versions of this report)

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