%0 Journal Article %A N. V. Medvedeva %A S. S. Titov %T Geometric model of perfect ciphers with three cipher plaintext values %J Prikladnaya Diskretnaya Matematika. Supplement %D 2019 %P 113-116 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDMA_2019_12_a34/ %G ru %F PDMA_2019_12_a34