Open AccessADVANCED METHOD OF PROTECTION OF CONFIDENTIAL INFORMATION FROM INTERCEPTION BY HIGH-FREQUENCY IMPOSITION METHODS
Author(s) -
Larysa Kriuchkova,
IVAN TSMOKANYCH,
MAKSYM VOVK
Publication year - 2022
Publication title -
kompûternì sistemi ta ìnformacìjnì tehnologìï
Language(s) - English
Resource type - Journals
eISSN - 2710-0774
pISSN - 2710-0766
DOI - 10.31891/csit-2021-5-2
Subject(s) - harmonics , signal (programming language) , information leakage , computer science , interception , modulation (music) , noise (video) , confidentiality , frequency modulation , electronic engineering , computer security , engineering , artificial intelligence , radio frequency , acoustics , telecommunications , electrical engineering , physics , ecology , voltage , image (mathematics) , biology , programming language
The processes of formation of technical channels of leakage of confidential information on objects of information activity by methods of high-frequency imposition, physical essence of process of formation of dangerous signals by modulation of probing high-frequency signal by acoustic signals, conditions of formation of basic and auxiliary technical means and systems of dangerous signals are considered. As a basis for improvement, a method of blocking information interception channels by high-frequency imposition is used, in which target active noise protection signals are introduced into the medium used to supply probing oscillations, aimed at destroying informative parameters of dangerous signal with different types of carrier modulation. It is proposed to form a set of protective signals for the destruction of informative parameters of dangerous signals both on the fundamental frequency and on the combinational harmonics of the probing signal, which provides more effective protection of confidential information from interception. The parameters of effective noise protection signals, capable of destroying the informative parameters of dangerous signals of high-frequency imposition on the fundamental frequency and combinational harmonics of the probing signal, have been determined by mathematical and simulation modelling. Basic recommendations for the formation of protective signals are formulated.