Electromagnetic Emanations of the ICs

This paper presents an investigation of the leakage of compromising information via electromagnetic (EM) emanations from cryptographic modules or other ICs. The paper describes the work characters of static CMOS gates firstly. Based on the concrete circuit which was realized with an AT89C52 microchip, we made experiments of near field measurements to the EM emanation of the AT89C52 module. The result of the experiments shows that there is data-EM emanation correlation for working ICs.