English

New results of $0$-APN power functions over $\mathbb{F}_{2^n}$

Information Theory 2022-10-06 v1 math.IT

Abstract

Partially APN functions attract researchers' particular interest recently. It plays an important role in studying APN functions. In this paper, based on the multivariate method and resultant elimination, we propose several new infinite classes of 00-APN power functions over F2n\mathbb{F}_{2^n}. Furthermore, two infinite classes of 00-APN power functions xdx^d over F2n\mathbb{F}_{2^n} are characterized completely where (2k1)d2m1 (mod 2n1)(2^k-1)d\equiv 2^m-1~({\rm mod}\ 2^n-1) or (2k+1)d2m+1 (mod 2n1)(2^k+1)d\equiv 2^m+1~({\rm mod}\ 2^n-1) for some positive integers n,m,kn, m, k. These infinite classes of 00-APN power functions can explain some examples of exponents of Table 11 in \cite{BKRS2020}.

Keywords

Cite

@article{arxiv.2210.02207,
  title  = {New results of $0$-APN power functions over $\mathbb{F}_{2^n}$},
  author = {Yan-Ping Wang and Zhengbang Zha},
  journal= {arXiv preprint arXiv:2210.02207},
  year   = {2022}
}