Inter-Class vs. Mutual Information as Side-Channel Distinguishers
Résumé
A novel “interclass information” side-channel distin- guisher is compared to mutual information analysis. Interclass information possesses properties similar to mutual information but uses a different comparing strategy between the underlying conditional distributions. It is shown that interclass information can outperform mutual information in side-channel analysis, es- pecially under low noise. The theoretical comparison is confirmed by simulations.
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