_ 仕事始め。本当ならリハビリ的にまったりとした仕事始めにしたかったのだが、いきなり会議のため朝早く家を出る羽目になり、しかも電車のダイヤの乱れで電車はやたら混んでいたりと仕事始め早々大変な一日だった。やれやれ。
_ IACR ePrint 2014/010まで確認済み、ECCC 2003年分まで確認済み
_ 気になった論文：A Theoretical Study of Kolmogorov-Smirnov Distinguishers: Side-Channel Analysis vs. Differential Cryptanalysis
, Annelie Heuser and Sylvain Guilley and Olivier Rioul, http://eprint.iacr.org/2014/008
In this paper, we carry out a detailed mathematical study of two theoretical distinguishers based on the Kolmogorov-Smirnov (KS) distance. This includes a proof of soundness and the derivation of closed- form expressions, which can be split into two factors: one depending only on the noise and the other on the confusion coefficient of Fei, Luo and Ding. This allows one to have a deeper understanding of the relative influences of the signal-to-noise ratio and the confusion coefficient on the distinguisher’s performance. Moreover, one is able to directly compare distinguishers based on their closed-form expressions instead of using evaluation metric that might obscure the actual performance and favor one distinguisher over the other. Furthermore, we formalize the link between the confusion coefficient and differential cryptanalysis, which shows that the stronger an S-box is resistant to differential attacks the weaker it is against side-channel attacks, and vice versa.
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