Characterizations of a Class of Planar Functions over Finite Fields

Fuente: arXiv
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Autori principali: Chen, Ruikai, Mesnager, Sihem
Natura: Preprint
Pubblicazione: 2023
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author Chen, Ruikai
Mesnager, Sihem
author_facet Chen, Ruikai
Mesnager, Sihem
contents Planar functions, introduced by Dembowski and Ostrom, have attracted much attention in the last decade. As shown in this paper, we present a new class of planar functions of the form $\operatorname{Tr}(ax^{q+1})+\ell(x^2)$ on an extension of the finite field $\mathbb F_{q^n}/\mathbb F_q$. Specifically, we investigate those functions on $\mathbb F_{q^2}/\mathbb F_q$ and construct several typical kinds of planar functions. We also completely characterize them on $\mathbb F_{q^3}/\mathbb F_q$. When the degree of extension is higher, it will be proved that such planar functions do not exist given certain conditions.
format Preprint
id arxiv_https___arxiv_org_abs_2303_09265
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Characterizations of a Class of Planar Functions over Finite Fields
Chen, Ruikai
Mesnager, Sihem
Number Theory
Information Theory
11T06, 12E10, 51E15
Planar functions, introduced by Dembowski and Ostrom, have attracted much attention in the last decade. As shown in this paper, we present a new class of planar functions of the form $\operatorname{Tr}(ax^{q+1})+\ell(x^2)$ on an extension of the finite field $\mathbb F_{q^n}/\mathbb F_q$. Specifically, we investigate those functions on $\mathbb F_{q^2}/\mathbb F_q$ and construct several typical kinds of planar functions. We also completely characterize them on $\mathbb F_{q^3}/\mathbb F_q$. When the degree of extension is higher, it will be proved that such planar functions do not exist given certain conditions.
title Characterizations of a Class of Planar Functions over Finite Fields
topic Number Theory
Information Theory
11T06, 12E10, 51E15
url https://arxiv.org/abs/2303.09265