GAME-THEORETIC ESTIMATION OF CIPHER INACCESSIBILITY IN INFORMATION TRANSMISSION SYSTEMS

摘要

A conflict situation is considered in the form of interaction between a cipher clerk of transmitted information and a person having unsanctioned access to the information transmission system. The optimal (minimax) strategies of the players and the game value are defined. The entropy estimation of absolute inaccessibility of a cipher is considered, and minimax randomized strategies of a cipher officer and of a cryptanalyst are determined.