Spectral Electromagnetic Information Leakage from Cryptographic Device

The power analysis attack is one of side-channel attack on cryptographic equipment, which analyzes electromagnetic signals caused by processing, and the private key is obtained based on the correlation between the cryptographic processing content and the side-channel signals [1].Information leakage from the electromagnetic signal occurs at certain frequency bands that contain side-channel information [2].This report focuses on certain processing that has correlation with the side-channel signals that cause information leakage, and propose a method to efficient estimation of the frequencies that may leak information.