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arXiv · 2004.09245

A power APN function CCZ-equivalent to Kasami function in even dimension

Augustine Musukwa·Massimiliano Sala
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Abstract

Let $n$ be an even number such that $n\equiv 0 \pmod{4}$. We show that a power function $x^d$, with $d=2^{\frac{n+2}{2}}+2^{\frac{n-2}{2}}-1$, on $\mathbb{F}_{2^n}$ is an APN function of degree $n/2$ which is CCZ-equivalent to Kasami functions of degrees $n/2$ and $(n+4)/2$.

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Augustine Musukwa, Massimiliano Sala. 2020-04-13. A power APN function CCZ-equivalent to Kasami function in even dimension. https://arxiv.org/abs/2004.09245

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