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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
ASASAhigh-orderalgebraic
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
Creative Commons Attribution
CC BY
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