Lilya Budaghyan, Tor Helleseth, Nian Li, Bo Sun
Abstract
In this paper, we determine the Walsh spectra of three classes of quadratic APN functions and we prove that the class of quadratic trinomial APN functions constructed by Gologlu is affine equivalent to Gold functions.
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In this paper, we determine the Walsh spectra of three classes of quadratic APN functions and we prove that the class of quadratic trinomial APN functions constructed by Gologlu is affine equivalent to Gold functions.
Key concepts: Trinomial, Quadratic equation, Affine transformation, Quadratic function, Class (philosophy), Mathematics, Combinatorics, Discrete mathematics