Application of Structural Interference for Data Protection from Information Leakage in the Stray Electromagnetic Radiations Channel

Abstract

This work is devoted to the rational choice of formation parameters for the masking noise and structural interference and their combined use for the protection of confidential information against leaks in the stray electromagnetic radiations channel of the displaying units using the DVI standard. The work describes the simulation features of the influence of the interferences formed by the active jamming system on the quasioptimum receiver which serves as a tool for the interception. The principles of the pulse components formation in the stray electromagnetic radiations from displays based on the DVI standard-based video data transfer and specific pulse components of structural interference are presented. Noted that mode information output to the monitor screen have the broadband and repetitive stray electromagnetic radiations matching on frequency of the frame scan devices video path. The indicator is set for the estimation of effectiveness of structural interference in the solution of the data protection problem from leakage through the channel of stray electromagnetic radiations – variations of the wrong color recognition probability in the block of graphic information. A detailed description is given for the dependences of the effectiveness indicator of structural interference on a number of frames of an image, accumulated in the technical tool for the interception of stray electromagnetic radiations, as well as for signal/noise to amplitude relation at the input of the technical interception tool. On the basis of the simulation results we have evaluated the effectiveness of applying structural interference on active noise systems. Identified the feasibility of using structural interference with the protection of confidential information from leaking through the channel stray electromagnetic radiations means of information display the DVI standard. The advantages of decreased total output and power consumption by the active jamming devices are shown in comparison with the masking noise and traditional jamming methods.