A Study on Differential Power Analysis Attacks Against Smart-Card
Hongwei Zhu · 2004
The fundamental principle of differential power analysis (DPA) attacks against universal cryptosystems and a particular theory of DPA attacks against data encryption standard (DES) algorithm are described in detail. An improved algorithm is proposed for DPA. Based on the analysis of noise characteristics of the power signals, an approach to modeling the signal-to-noise ratio (SNR) is proposed and corresponding theory is demonstrated. Finally, experimental results of the algorithm are presented.