Geodesic
A compact bit-sliced representation of Kuznyechik S-box
Matematičeskie voprosy kriptografii, Tome 12 (2021) no. 2, pp. 21-38 
O. D. Avraamova; D. B. Fomin; V. A. Serov; A. V. Smirnov; V. N. Shokov. A compact bit-sliced representation of Kuznyechik S-box. Matematičeskie voprosy kriptografii, Tome 12 (2021) no. 2, pp. 21-38. http://geodesic.mathdoc.fr/item/MVK_2021_12_2_a2/
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     title = {A compact bit-sliced representation of {Kuznyechik} {S-box}},
     journal = {Matemati\v{c}eskie voprosy kriptografii},
     pages = {21--38},
     year = {2021},
     volume = {12},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MVK_2021_12_2_a2/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

In this paper we consider a bit-sliced implementation of the non-linear transformation shared by GOST R 34.12-2015 “Kuznyechik” block cipher and GOST R 34.11-2012 “Streebog” hash function. We combine analytical and computer methods to get a 226 Boolean operations representation.

[1] Federal Agency on Technical Regulating and Metrology. GOST R 34.12-2015. National standard of Russian Federation. Block ciphers, Standartinform, M., 2015 (in Russian)

[2] Biryukov A., Perrin L., Udovenko A., Reverse-engineering the S-Box of Streebog, Kuznyechik and STRIBOBr1, Cryptology ePrint Archive, Report 2016/071, , 2016 http://eprint.iacr.org/2016/071

[3] https://is.muni.cz/el/1423/podzim2015/VPL405/59270121/59761464/Logic_Friday_1/?lang=en

[4] Yablonsky S. V., Introduction to Discrete Mathematics, 4th edition, Vysshaya Shkola, M., 2006, 384 pp. (in Russian)

[5] Savel'ev A. Y., Introduction to Informatics, Bauman Univ. Publ., M., 2001, 328 pp. (in Russian)

[6] Borisenko N. P., Vasinev D. A., Khoang Dyk Tkho, Method of forming S-blocks with minimum number of logic elements, Abstract of Invention, RU 2572423 C2, 2016 (in Russian)