The compositional inverse of a class of bilinear permutation polynomials over finite fields of characteristic 2

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• 作者：Baofeng Wu ; Zhuojun Liu
• 关键词：05A05 ; 11T06
• 刊名：Finite Fields and Their Applications
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：24
• 期：Complete
• 页码：136-147
• 全文大小：231 K

文摘

Laigle-Chapuy constructed a class of permutation polynomials over a finite field of characteristic 2, which includes several other known classes. In this paper, we determine the compositional inverses of all Laigle-Chapuy?s permutation polynomials. Our method is based on a direct sum decomposition of the finite field.