Improved DPA Attack Method on AES Encryption

摘要

Side-channel attack, which is a new technology in the field of cryptography, focus on the power-leak produced by password equipment, such as energyy, time, radiation. DPA (differential power analysis) attack as a method of sidechannel attack, its main method is comparing the peak of curve to determine the key is correct or not. According to the characteristics of AES-128 encryption, this paper uses the method of immobilizing the plaintext data, improving the ratio of SNR, making the correlation close to the high value of 1. Finally finish the DPA att.