Hello,

I see that the CPA attacks (as well as the template based profiling attacks) on the CW303 XMEGA Target are performed using the Hamming weight (HW) model.

I am not sure if HW model is the best suited, compared to the Hamming Distance (HD) model.

Can someone kindly explain why HW model is being used for the attack? I would presume that HW is suitable for devices with pre-charge phase (dynamic logic).

Thanks,

Ron