%0 Journal Article %A V. A. Roman'kov %A A. A. Obzor %T A nonlinear decomposition method in analysis of some encryption schemes using group automorphisms %J Prikladnaâ diskretnaâ matematika %D 2018 %P 38-45 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2018_3_a3/ %G ru %F PDM_2018_3_a3