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A Hardware Trojan Detection Method Based on the electromagnetic leakage

China Communications 2019年第12期16卷 100-110页

作者： Lei Zhang Youheng Dong Jianxin Wang Chaoen Xiao Ding Ding Beijing Electronic Science and Technology Institute

Hardware Trojan(HT) refers to a special module intentionally implanted into a chip or an electronic system. The module can be exploited by the attacker to achieve destructive functions. Unfortunately the HT is difficult to detecte due to its minimal resource occupation. In order to achieve an accurate detection with high efficiency, a HT detection method based on the electromagnetic leakage of the chip is proposed in this paper. At first, the dimensionality reduction and the feature extraction of the electromagnetic leakage signals in each group(template chip, Trojan-free chip and target chip) were realized by principal component analysis(PCA). Then, the Mahalanobis distances between the template group and the other groups were calculated. Finally, the differences between the Mahalanobis distances and the threshold were compared to determine whether the HT had been implanted into the target chip. In addition, the concept of the HT Detection Quality(HTDQ) was proposed to analyze and compare the performance of different detection methods. Our experiment results indicate that the accuracy of this detection method is 91.93%, and the time consumption is 0.042s in average, which shows a high HTDQ compared with three other methods.

关键词： hardware trojan detection side channel analysis electromagnetic leakage principal component analysis Mahalanobis distance detection quality

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Method for Evaluating Digital Video electromagnetic Information leakage from Video Cable

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Chinese Journal of Electronics 2021年第5期30卷 978-985页

作者： WANG Sen QIU Yang TIAN Jin AECC Aero Engine Control System Institute electromagnetic Compatibility Laboratory Xidian University

electromagnetic emissions from electrical information equipment may contain useful information and lead to information leakage. In order to detect the electromagnetic information leakage of digital video cable,a rapid testing method for computer video information leakage detection without reconstructing the displayed image is proposed. In this method, the electromagnetic radiation spectrum of typical image transmitted by HDMI cable is simulated. Then the electromagnetic radiation spectrum of the computer when transmitting the same image as the typical image is obtained by conduction and radiation EMC test methods. Finally, the correlation between the spectrum of simulation and the test spectrum is analyzed, and the correlation coefficient is used to judge whether the computer has produced the electromagnetic leakage of video information. The analysis and test results show that when the correlation coefficient is greater than 0.5, the electromagnetic leakage of computer video information can be judged.

关键词： lead rapid testing method computer video information leakage detection displayed image electrical information equipment evaluating digital video electromagnetic information leakage test spectrum typical image electromagnetic leakage electromagnetic radiation spectrum HDMI cable correlation coefficient electromagnetic emissions digital video broadcasting electromagnetic compatibility digital video cable

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Reciprocity principle-based model for shielding effectiveness prediction of a rectangular cavity with a covered aperture

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Chinese Physics B 2015年第10期24卷 166-171页

作者：焦重庆李月月 State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University

According to the reciprocity principle, we propose an efficient model to compute the shielding effectiveness of a rectangular cavity with apertures covered by conductive sheet against an external incident electromagnetic wave. This problem is converted into another problem of solving the electromagnetic field leakage from the cavity when the cavity is excited by an electric dipole placed within it. By the combination of the unperturbed cavity field and the transfer impedance of the sheet, the tangential electric field distribution on the outer surface of the sheet is obtained. Then, the field distribution is regarded as an equivalent surface magnetic current source responsible for the leakage field. The validation of this model is verified by a comparison with the circuital model and the full-wave simulations. This time-saving model can deal with arbitrary aperture shape, various wave propagation and polarization directions, and the near-field effect.

关键词： electromagnetic shielding electromagnetic leakage apertured cavity conductive material

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Modeling of Radiating Aperture Using the Iterative Method

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Detection 2022年第3期9卷 29-36页

作者： Rafika Mejri Taoufik Aguili Communication System Laboratory Sys’Com National Engineering School of Tunis University Tunis El Manar Tunis Tunisia

We are interested in this work to electromagnetic leakage, for example the door of the microwave oven (or shielding of electronic functions working in the microwave band containing holes for ventilation circuit) which must be transparent (chain link) but the level of electromagnetic leakage issued by this device must not exceed certain standards. This work started with this article in which we are interested in a simple structure consisting of a multilayer structure incorporating a radiating aperture. We show in this paper mainly the interests of this study and the limitations of using these structures. Modeling of this device is provided by the wave concept iterative procedure (WCIP) which is simple to implement and is characterized by the fast execution method. The validation of our work is carried out by comparing our results with those calculated by the Ansoft HFSS software which shows a good agreement.

关键词： electromagnetic leakage Radiating Aperture Microwave Iterative Method Planar Structure Multilayer electromagnetic Shielding

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