Reference : Multiset-Algebraic Cryptanalysis of Reduced Kuznyechik, Khazad, and secret SPNs
Scientific journals : Article
Engineering, computing & technology : Computer science
Security, Reliability and Trust
http://hdl.handle.net/10993/30023
Multiset-Algebraic Cryptanalysis of Reduced Kuznyechik, Khazad, and secret SPNs
English
Biryukov, Alex mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Computer Science and Communications Research Unit (CSC) >]
Khovratovich, Dmitry [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Computer Science and Communications Research Unit (CSC) >]
Perrin, Léo Paul [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
2016
IACR Transactions on Symmetric Cryptology
2016
2
226-247
Yes
International
2519-173X
[en] Generic SPN ; Algebraic attack ; Multi-set ; Integral ; Division property ; Kuznyechik ; Khazad
[en] We devise the first closed formula for the number of rounds of a blockcipher with secret components so that these components can be revealed using multiset, algebraic-degree, or division-integral properties, which in this case are equivalent. Using the new result, we attack 7 (out of 9) rounds of Kuznyechik, the recent Russian blockcipher standard, thus halving its security margin. With the same technique we attack 6 (out of 8) rounds of Khazad, the legacy 64-bit blockcipher. Finally, we show how to cryptanalyze and find a decomposition of generic SPN construction for which the inner-components are secret. All the attacks are the best to date.
Researchers ; Professionals
http://hdl.handle.net/10993/30023
10.13154/tosc.v2016.i2.226-247
http://tosc.iacr.org/index.php/ToSC/article/view/572
FnR ; FNR4009992 > Alex Biryukov > ACRYPT > Applied Cryptography for the Internet of Things > 01/07/2013 > 30/06/2016 > 2012

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