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arXiv 2410.00611math.COcs.ITmath.IT
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高原函数的组合结构和值分布

The combinatorial structure and value distributions of plateaued functions

University of South Florida(南佛罗里达大学);Otto-von-Guericke-Universität Magdeburg(奥托·冯·格里克马德堡大学)

Lukas Kölsch, Alexandr Polujan

AI总结:

本文研究高原函数的组合性质及其值分布,探讨了 Walsh 变换与线性性、差分性质之间的关系,以及高原函数的构造条件和差分均匀性界。

摘要:

我们研究了高原函数 $F \colon \mathbb{F}_p^n \rightarrow \mathbb{F}_p^m$ 的组合性质。所有二次函数、弯曲函数和大多数已知的 APN 函数都是高原函数,因此许多密码学原语依赖于高原函数作为基本构件。本文的重点是高原函数的 Walsh 变换与线性性之间的相互作用,其差分性质及其值分布,即图像集和前像集的大小。特别地,我们研究了''几乎平衡''的高原函数,其仅具有两个非零前像集大小,例如所有单次多项式函数。我们建立了这些函数的直接联系和(非)存在条件,例如表明高原 $d$-to-$1$ 函数(以及高原单次多项式)仅在非常有限的 $d$ 选择下存在,并为所有这些函数推导了线性和差分均匀性的界。我们还特别研究了高原 APN 函数的 Walsh 变换及其与值分布的关系。

英文摘要:

We study combinatorial properties of plateaued functions $F \colon \mathbb{F}_p^n \rightarrow \mathbb{F}_p^m$. All quadratic functions, bent functions and most known APN functions are plateaued, so many cryptographic primitives rely on plateaued functions as building blocks. The main focus of our study is the interplay of the Walsh transform and linearity of a plateaued function, its differential properties, and their value distributions, i.e., the sizes of image and preimage sets. In particular, we study the special case of ''almost balanced'' plateaued functions, which only have two nonzero preimage set sizes, generalizing for instance all monomial functions. We achieve several direct connections and (non)existence conditions for these functions, showing for instance that plateaued $d$-to-$1$ functions (and thus plateaued monomials) only exist for a very select choice of $d$, and we derive for all these functions their linearity as well as bounds on their differential uniformity. We also specifically study the Walsh transform of plateaued APN functions and their relation to their value distribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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