Defines DC/LC equivalence for BOGI ciphers via trail-set bijections, then classifies 41,472 variants instead of hand-waving about “simila...
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01 02 A (6, 4) Vectorial Boolean Function With Nonlinearity 26 and the Maximum Nonlinearity for Six-Bit Permutations eprint.iacr.orgCan a 6-bit S-box do better? This preprint says 6->4 maps hit 26, while permutations still top out at 24.