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On APN functions and their derivatives. (arXiv:2305.00582v1 [cs.CR])
May 2, 2023, 1:10 a.m. | Augustine Musukwa
cs.CR updates on arXiv.org arxiv.org
We determine a connection between the weight of a Boolean function and the
total weight of its first-order derivatives. The relationship established is
used to study some cryptographic properties of Boolean functions. We establish
a characterization of APN permutations in terms of the weight of the
first-order derivatives of their components. We also characterize APN functions
by the total weight of the second-order derivatives of their components. The
total weight of the first-order and second-order derivatives for functions such
as …
derivatives function functions order relationship study terms
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