ОЦЕНКА ЗАЩИЩЕННОСТИ ПОМЕЩЕНИЯ ОТ УТЕЧЕК РЕЧЕВОЙ ИНФОРМАЦИИ В УСЛОВИЯХ ВОЗДЕЙСТВИЯ ШУМОВ

Abstract

The article discusses the features of the application of certification methods for protectedpremises. Such techniques are developed and regulated by the Federal Service for Technical andExport Control. The need for certification is associated with the presence of technical channels forinformation leakage, through which an attacker can obtain information constituting a commercial,state or other secret. The presence of technical channels for information leakage is due to physicalprocesses associated with the propagation of acoustic, electromagnetic, and optical waves.Through such channels, leakage of acoustic, specific information, information processed by technicalmeans and systems is possible. In the framework of this work, the features of certification ofprotected premises against leakage of acoustic information are considered. Certification includesinstrumental measurements that allow you to detect an informative signal in communication lines,on the air, in heating, water supply, ventilation, etc. In addition to measurements, certificationinvolves calculations based on which a conclusion is made about the conformity or noncomplianceof the level of protection. The calculation part is rather cumbersome and complex,therefore the purpose of the work is to develop an algorithm that allows you to determine the degreeof security of the selected premises from the leakage of speech information. The objectives ofthe work are: the development of auxiliary algorithms for calculating the security parameters ofthe room for each type of voice information leakage channel; implementation of software thatallows you to determine the degree of security of the room; conducting a study of the dependenceof room security on the noise level using the developed software. As the results of the work, thesynthesized algorithm and the developed software tool should be noted, which can significantlyreduce the time for the procedure for assessing the security of the room and avoid errors.The result of the work is the study of the dependence of verbal intelligibility of speech on the noiselevel in various octaves. Studies have shown that verbal intelligibility, which determines the securityof a room by acoustic parameters, decreases non-linearly with an increase in the noise level ata fixed signal level.