English

Permutation polynomials over finite fields from low-degree rational functions

Cryptography and Security 2025-08-25 v3 Number Theory

Abstract

This paper considers permutation polynomials over the finite field Fq2F_{q^2} in even characteristic by utilizing low-degree permutation rational functions over FqF_q. As a result, we obtain two classes of permutation binomials and six classes of permutation pentanomials over Fq2F_{q^2}. Additionally, we show that the obtained binomials and pentanomials are quasi-multiplicative inequivalent to the known ones in the literature.

Keywords

Cite

@article{arxiv.2503.20982,
  title  = {Permutation polynomials over finite fields from low-degree rational functions},
  author = {Kirpa Garg and Sartaj Ul Hasan and Chunlei Li and Hridesh Kumar and Mohit Pal},
  journal= {arXiv preprint arXiv:2503.20982},
  year   = {2025}
}

Comments

32 pages

R2 v1 2026-06-28T22:35:53.088Z