%0 Journal Article %A V. V. Vlasova %A M. A. Pudovkina %T Group properties of block ciphers of the Russian standards GOST R 34.11-2012 and GOST R 34.12-2015 %J Matematičeskie voprosy kriptografii %D 2018 %P 59-70 %V 9 %N 2 %U http://geodesic.mathdoc.fr/item/MVK_2018_9_2_a4/ %G en %F MVK_2018_9_2_a4