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Almost Perfect Nonlinear (APN) functions are very useful in cryptography , when they are used as S-Boxes, because of their good resistance to differential cryptanalysis. An APN function f : F 2 n → F 2 n is called exceptional APN if it is APN on infinitely many extensions of F 2 n. Aubry, McGuire and Rodier conjectured that the only exceptional APN(More)
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