RUS  ENG
Full version
JOURNALS // Prikladnaya Diskretnaya Matematika. Supplement // Archive
Prikl. Diskr. Mat. Suppl., 2014 Issue 7, Pages 54–56 (Mi pdma172)
Mathematical Methods of Cryptography

Conditions for the existence of perfect ciphers with a fixed set of parameters

S. M. Ratseev

Ulyanovsk State University, Ulyanovsk

Abstract: Some necessary and sufficient conditions for existence of a perfect cipher with the given sets of plaintexts and keys and a key probability distribution are presented.

Keywords: cipher, perfect cipher.

UDC: 519.7


© Steklov Math. Inst. of RAS, 2026