On the weakness S of the transformation of the cipher Strumok from the chain of controllable S-blocks

  • Konstantin Lisitzky V. N. Karazin Kharkiv National University
  • Katerina Kuznetsova V. N. Karazin Kharkiv National University
Keywords: current cipher, random substitution, differential probability, S-transformation, linear mixing scheme

Abstract

The peculiarities of the construction of the S-transform of the Stream cipher “Strumok” are discussed. In particular, an analysis of the preposition for constructing S-transformation of the stream cipher “Strumok” using controlled S-blocks is underway. His randomness scores are evaluated. It is shown that it is inferior to the effectiveness of the original proposal. The reasons of such circumstances turn out.

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Author Biographies

Konstantin Lisitzky, V. N. Karazin Kharkiv National University

postgraduate student

Katerina Kuznetsova, V. N. Karazin Kharkiv National University

computer science student

References

Lisitzky, K. Stratehiia vyboru S-blokiv dlia neliniinoho peretvorennia shyfru Strumok. Kompiuterni nauky ta kiberbezpeka. 2018. № 2. P.4–11. URL: https://periodicals.karazin.ua/cscs/article/view/12025

Dolgov V. I., Lisitska I. V., Lisitskyi K. Yе. The new concept of block symmetric ciphers design. TelecomRadEng. Vol. 76. Issue 2. P. 157–184.

Matematychna struktura potokovoho shyfru Strumok / Gorbenko I.D., Kuznetsov О.О., Oleksyichuk А.М., V.А. Tymchenko. Radyotekhnyka. Kharkiv: KhTURE, 2018. Vyp. 193. P. 17–27.

Golovashych S. А. Spetsyfykatsyia alhorytma blochnoho symmetrychnoho shyfrovanyia «Labyrynt». Prykladnaia radyoэlektronyka. Kharkiv: KhTURE, 2007. Vol. 6, №2. P. 230–240.

Published
2019-01-13
Cited
How to Cite
Lisitzky, K., & Kuznetsova, K. (2019). On the weakness S of the transformation of the cipher Strumok from the chain of controllable S-blocks. Computer Science and Cybersecurity, (4), 13-21. Retrieved from https://periodicals.karazin.ua/cscs/article/view/12248
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Статті

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