Decomposition attack on SASASASAS

Alex Biryukov; Dmitry Khovratovich

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Paper 2015/646

Decomposition attack on SASASASAS

Alex Biryukov and Dmitry Khovratovich

Abstract

We demonstrate the first attacks on the SPN ciphers with 6, 7, 8, and 9 secret layers. In particular, we show a decomposition attack on the SASASASAS scheme when the S-box size M and the block length N satisfy the condition M^2 < N (for example, 8-bit S-box and 128-bit block).

Note: Minor abstract revision

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: ASASA high-order algebraic
Contact author(s): khovratovich @ gmail com
alex biryukov @ uni lu
History: 2015-07-01: revised; 2015-07-01: received; See all versions
Short URL: https://ia.cr/2015/646
License: CC BY

BibTeX

@misc{cryptoeprint:2015/646,
      author = {Alex Biryukov and Dmitry Khovratovich},
      title = {Decomposition attack on SASASASAS},
      howpublished = {Cryptology ePrint Archive, Paper 2015/646},
      year = {2015},
      note = {\url{https://eprint.iacr.org/2015/646}},
      url = {https://eprint.iacr.org/2015/646}
}