DPA plots


Hi Colin,

I’m quite new to the whole concept of SCA and I suddenly had this silly question (but it got me confused a lot). So, I thought I could ask this here. While doing DPA on say, AES-128, for a subkey guess (example:byte 1), I take the mean of all traces with LSB=0 and LSB=1, compute the difference and then plot this difference of means. When we visualize this, should the difference plot be bounded like the correlation plot (between -1 and 1) or can it go beyond this interval as well? In other words,
Thanks in advance.



Hello Rob,
The difference plot have no bound,this only subject to the difference between two sets of your classification.Hope it can help you.