Differential Spectrum of Kasami Power Permutations Over Odd Characteristic Finite Fields
Differential Spectrum of Kasami Power Permutations Over Odd Characteristic Finite Fields
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奇特征有限域上 Kasami 幂排列的微分谱
DOI:
10.1109/tit.2019.2910070
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发表时间:
2019-04
影响因子:
2.5
通讯作者:
Wang Qi
中科院分区:
文献类型:
--
作者:
Yan Haode;Zhou Zhengchun;Weng Jian;Wen Jinming;Helleseth Tor;Wang Qi
Functions with low differential uniformity have important applications in cryptography, coding theory, and sequence design. The differential spectrum of a cryptographic function is of great interest for estimating its resistance to some variants of differential cryptanalysis. Finding power permutations (i.e., monomial bijective mappings) over finite fields with low differential uniformity and determining their differential spectra have received a lot of attention over the past two decades. The objective of this paper is to study the differential properties of the well-known Kasami power permutations <inline-formula> <tex-math notation="LaTeX">$x^{p^{2k}-p^{k}+1}$ </tex-math></inline-formula> over <inline-formula> <tex-math notation="LaTeX">$ {\mathrm {GF}}(p^{n})$ </tex-math></inline-formula>, where <inline-formula> <tex-math notation="LaTeX">$p$ </tex-math></inline-formula> is an odd prime and <inline-formula> <tex-math notation="LaTeX">$k$ </tex-math></inline-formula> is an integer with <inline-formula> <tex-math notation="LaTeX">$\gcd (n,k)=1$ </tex-math></inline-formula>. It turns out that this family of monomials is differentially <inline-formula> <tex-math notation="LaTeX">$(p+1)$ </tex-math></inline-formula>-uniform. Our result in the case of <inline-formula> <tex-math notation="LaTeX">$p=3$ </tex-math></inline-formula> gives an affirmative solution to a recent conjecture by Xu, Cao, and Xu. Most notably, the differential spectrum of this family of power permutations is completely determined.
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发表时间:
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期刊:
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影响因子:
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