TEMPEST in USB

In order to solve the problem of the computer data cable (USB cable) electromagnetic leakage, we can first use the near field coupling coil to collect the leaked electromagnetic signals, and meanwhile use oscilloscope to save the signals. After that, we will use the ESN (echo state network) to extract the characteristics of the collected electromagnetic signals and then use the SVM (support vector machine) method to pattern identify the characteristics of signals. This article mainly introduce an experiment, which divides 0-9(ten numbers) into 5 groups according to the difference of ASCLL code in Hamming weigh and then identify these 5 groups separately.