Signal Processing and Analysis Techniques in Differential Power Analysis
Qiang Zhao · Microelectronics & Computer · 2009
Signal processing and analysis are key techniques used in differential power analysis. This paper presents some techniques of processing and analyzing power signal in detail. Including alignment of power traces,denoising,compression of power traces,time-frequency transform and identification of a significant differential signal peak. The result of the differential power analysis attack against the AT89C52 microcontroller that executes a software implementation of AES shows that the AES key can be recovered with 3 000 samples under the using of the above techniques.