Fu S, Feng X, Wu B. Differentially 4-Uniform Permutations with the Best Known Nonlinearity from Butterflies. ToSC [Internet]. 2017 Jun. 19 [cited 2025 Jan. 31];2017(2):228-49. Available from: https://ojs.ub.rub.de/index.php/ToSC/article/view/645