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Differentially low uniform permutations from known 4-uniform functions (1910.14337v3)
Published 31 Oct 2019 in cs.IT and math.IT
Abstract: Functions with low differential uniformity can be used in a block cipher as S-boxes since they have good resistance to differential attacks. In this paper we consider piecewise constructions for permutations with low differential uniformity. In particular, we give two constructions of differentially 6-uniform functions, modifying the Gold function and the Bracken-Leander function on a subfield.