Geodesic
The difference relations and impossible differentials construction for the KB-256 algorithm
Prikladnaya Diskretnaya Matematika. Supplement, no. 15 (2022), pp. 73-77.

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In this paper, new results of the analysis of the KB 256-3 block cipher algorithm are outlined. We set up a difference relation with probability 1 for the six-round algorithm under study and propose a key recovery method using this difference relation for the nine-round KB 256-3 algorithm. We construct an impossible differential for the full-round algorithm.
Keywords: differential cryptanalysis, impossible differentials. 
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V. M. Fomichev; A. V. Kurochkin; A. B. Chuhno. The difference relations and impossible differentials construction for the KB-256 algorithm. Prikladnaya Diskretnaya Matematika. Supplement, no. 15 (2022), pp. 73-77. http://geodesic.mathdoc.fr/item/PDMA_2022_15_a18/

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