How to Choose Interesting Points for Template Attacks
Guangjun Fan, Yongbin Zhou, Hailong Zhang, Dengguo Feng · 2014
Abstract. Template Attacks are widely accepted to be the most pow-erful side-channel attacks from an information theoretic point of view. For Template Attacks, many papers suggested an accepted guideline for choosing interesting points. The accepted guideline is that one should on-ly choose one point as the interesting point per clock cycle. Up to now, many different methods of choosing interesting points were introduced. However, it is still unclear that which method will lead to the best classi-fication performance for Template Attacks. In this paper, we comprehen-sively evaluate and compare the classification performance of Template Attacks when using different methods of choosing interesting points. E-valuation results show that the classification performance of Template Attacks has obvious difference when different methods of choosing in-teresting points are used. The CPA based method and the SOST based method will lead to the best classification performance. Moreover, we find that some of the methods of choosing interesting points provide the same results in the same circumstance. Finally, we correctly and exper-imentally prove the accepted guideline for choosing interesting points for Template Attacks is correct by presenting a new way of conducting