RU2013125955A - METHOD FOR INFORMATION PROTECTION EFFICIENCY CONTROL - Google Patents

Abstract

A method for monitoring the effectiveness of information protection based on determining the number J, location and type of technical channels for information leakage, placing the acoustic signal source at a standard distance from the jth technical channel for information leakage, where, the orientation of the working axis of the radiation of the acoustic signal source along the normal to the j plane of the technical channel for information leakage and the installation of a standard radiation level of an acoustic signal source in the n-th octave bands, where, N is the number of octave bands, different I mean that they install the sensor of the vibro-acoustic signal relative to the j-th technical channel of information leakage on the working axis of the radiation of the source of the acoustic signal to the first position - at a standard distance and to the second - at a distance of 1-3 m from the first position and determine using the sensor of the vibro-acoustic signal levels of the vibro-acoustic signal in the n-th octave emission bands for the j-th technical channel of information leakage in the first and second positions L and L, where 1,2 is the first and second installation positions of the sensor vibro-acoustic of the second signal, using the obtained values of the levels of the vibro-acoustic signal L and L for each of the N octave bands, calculate the radius of the optimal placement zone of the sensors of the vibro-acoustic signal r (for the n-th octave emission band through the j-th technical channel of information leakage), calculate the optimal spatial separation of neighboring sensors vibroacoustic signal for the j-th technical channel of information leakage r according to the formula: r = 0.75 · 10 s, where c is the propagation speed of the acoustic signal in the medium of the j-th technical channel leak

Claims (1)

A method for monitoring the effectiveness of information security, based on determining the number J, location and type of technical channels for information leakage, placing the acoustic signal source at a standard distance from the j-th technical channel for information leakage, where $$\overline{j=\mathrm{one,}J}$$

orientation of the working axis of the radiation of the source of the acoustic signal normal to the plane of the j-th technical channel of information leakage and setting the standard level of radiation of the source of the acoustic signal in the n-th octave bands, where $$\overline{n=\mathrm{one,}N}$$

, N is the number of octave bands, characterized in that the vibro-acoustic signal sensor is installed relative to the j-th technical channel of information leakage on the working axis of the radiation of the acoustic signal source to the first position - at a standard distance and to the second - at a distance of 1-3 m from the first position and determining from the signal levels in the vibroacoustic n-th radiation octave bands for j-th technical information leakage channel in the first and second positions L _nj1 and L _nj2, where 1.2 means vibroacoustic sensor signal - the first and second dix Fitting vibroacoustic signal sensor, using the obtained values vibroacoustic signal levels L _nj2 and L _nj2 for each of the N octave bands calculated radius optimal vibroacoustic signal sensor accommodation area r _nj (for the n-th octave emission band of j-th technical channel information leakage ) calculated optimal separation distance of adjacent sensors vibroacoustic signal j-th channel technical information leakage r _j using the formula: r _j = 0.75 · 10 ^-3 c _j, where c _j - propagation velocity kusticheskogo signal among the j-th channel technical information leakage and compares its value with the value of the radius of the optimal placement vibroacoustic sensor signal zone to n-th octave band radiation of j-th channel maintenance information leakage r _nj, if r _nj ≥r _j, then determine the maximum number of vibroacoustic signal sensors involved in the summation of the signal in the n-th octave band of radiation for the j-th technical channel of information leakage and using the values of which calculate the total octave levels of vibro-acoustic signal and noise in the n-th octave emission band for the j-th technical channel of information leakage L _сnjΣ and L _шnjΣ , where w, c - signal and noise designation and determine the octave signal-to-noise ratio in the n-th one by the difference of their values octave emission band for the jth technical channel of information leakage E _n , if r _nj <r _j , then calculate the octave signal-to-noise ratio in the n-th octave emission band for the jth technical channel of information leakage E _{n by} subtracting the value of the total octave level vibroacoustic noise and L _shnjΣ level value vibroacoustic signal obtained when installing vibroacoustic signal sensor in a first position relative to the j-th technical channel information leakage L _nj1, determined coefficient perception vibro-acoustic signal in the n-th octave radiation band for the j-th technical channel information leaks P _n, and using its values obtained for N octave bands, the maximum formant intelligibility of the vibroacoustic signal A _{j is} calculated for the jth technical channel of information leakage, determined from wearing the maximum value of formant intelligibility from all J technical channels of information leakage $$\underset{j=\overline{\mathrm{one,}J}}{\max }{A}_j$$

to the sum of the values of the maximum formant intelligibility of the remaining j-th technical channels of information leakage D, calculate $$0.39-0.2\left(\underset{j=\overline{\mathrm{one,}J}}{\max }{A}_j\right)$$

and comparing the obtained value with the ratio of the maximum value of formant intelligibility from all J technical information leakage channels to the sum of the values of the maximum formant intelligibility of the remaining j-th technical leakage channels D, if $$D\le 0.39-0.2\left(\underset{j=\overline{\mathrm{one,}J}}{\max }{A}_j\right)$$

then place the source of the acoustic signal at a height of 1.5 m from the floor of the room at the intersection of the normal to the plane of the technical channel of information leakage with the maximum value of formant intelligibility and the normal to the plane of the technical channel of information leakage having the highest value of the maximum formant intelligibility of the vibroacoustic signal from all technical channels information leakage lying in planes perpendicular to the technical channel of information leakage with the maximum value of formant intelligibility, ec and $$D>0.39-0.2\left(\underset{j=\overline{\mathrm{one,}J}}{\max }{A}_j\right)$$

then place the source of the acoustic signal at a standard distance from the technical channel for information leakage with the maximum value of formant intelligibility $$\underset{j=\overline{\mathrm{one,}J}}{\max }{A}_j$$

, repeat the procedure from the installation relative to the j-th technical channel of information leakage of the sensor of the vibro-acoustic signal on the working axis of the radiation of the source of the acoustic signal in two positions: at the standard distance and at a distance of 1-3 m from it to inclusively determining the maximum formant intelligibility of the vibro-acoustic signal A for of the j-th technical channel of information leakage, determine the maximum value of the formant intelligibility of speech in room A with the optimal placement of IAS, using the value of which of the calculated integral value verbal signal intelligibility vibroacoustic indoor W and its value is compared with a standard value W _n, where n - the indication of the standard value, the result of the comparison concludes that the efficacy of protection.