报告名称:Binomial Permutations over Finite Fields with Even Characteristic
主办单位:英国立博官网中文版
报告专家:涂自然
专家所在单位:河南科技大学
报告时间:2021年1月1日14:30-18:30
报告地点:腾讯会议(会议ID:443 202 074)
专家简介:涂自然,河南科技大学副教授。2009年博士毕业于中国科学院数学与系统科学研究院,主要研究方向为密码学中的密码函数等。
报告摘要:In this work, we determine all the r's and coefficients a's making $x^r(a+x^(3(q-1)))$ permutation binomials of Fq2 , with $q = 2^m$. For even m, we prove that the characterization is both necessary and sufficient. For odd m, we prove that based on the validity of a conjecture, the characterization is also necessary and sufficient. Further, we prove that the conjecture almost holds, i.e, the proportion of
r's we can not make sure is only about 1/40.
邀请人:陈媛