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Differentially low uniform permutations from known 4-uniform functions

10/31/2019

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by Marco Calderini, et al.

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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 permutation 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.

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