Fast algorithm of generation of substations of multiple-alphabetic replacement

Гулак, Геннадій Миколайович and Бурячок, Володимир Леонідович and Складанний, Павло Миколайович (2017) Fast algorithm of generation of substations of multiple-alphabetic replacement Захист інформації (2). pp. 173-177. ISSN 2221-5212

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Abstract

An actual model of the cyber-security offender for automated control systems of the technological processes (APS TP), us-ing global networks as a transport was proposed in this article. Basing on the threats to confidentiality and integrity of infor-mation, an analysis of methods of counteracting network ma-nipulation and basic methods were made, that methods en-sured the conversion of pseudo-random sequences into sub-stitution sequences of the appropriate degree for the imple-mentation of the multi-alphabetical replacement cipher. Within the framework of the work, a fast algorithm for real-izing the multi-alphabetical replacement cipher with the use of the cipher sequence from the block cipher in the OFB mode was proposed, the correctness of the corresponding procedure was proved, and the possibility of forming any sub-stitution from the symmetric permutation group Sn.. The simulation modeling of the algorithm was performed, it al-lowed to confirm the necessary of the statistical qualities of the matrix of the cipher transition probabilities, which will en-sure a high level of encryption and imitation resistance of commands and service information, circulating in the men-tioned APS TP

Item Type: Article
Uncontrolled Keywords: сryptology; encryption; imitostability; a method of non-repetitive typing; substitution matrix.
Subjects: Статті у наукометричних базах > Index Copernicus
Articles in journals > Фахові (входять до переліку фахових, затверджений МОН)
Divisions: Факультети > Факультет інформаційних технологій та управління > Кафедра комп'ютерних наук і математики
Depositing User: професор Володимир Леонідович Бурячок
Date Deposited: 16 Jan 2018 08:38
Last Modified: 16 Jan 2018 08:38
URI: http://elibrary.kubg.edu.ua/id/eprint/23065

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