首页 | 本学科首页   官方微博 | 高级检索  
     检索      

关于正形置换的构造
引用本文:周建钦.关于正形置换的构造[J].华中科技大学学报(自然科学版),2007,35(2):40-42,46.
作者姓名:周建钦
作者单位:安徽工业大学,计算机学院,安徽,马鞍山,243002
基金项目:国家自然科学基金 , 安徽省教育厅自然科学基金
摘    要:基于正形置换的定义,给出一个实用的正形置换构造算法及其应用,得到全部16次正形置换的计数为244 744 192;通过求解有限域Fm2上矩阵的逆矩阵,给出一个简捷的Fm2上与一个置换对应的置换多项式构造方法,得到了有限域F42上的全部正形置换多项式,并且证明其多项式次数均小于14.证明了有限域Fm2上置换多项式的多项式次数均小于2m-1.

关 键 词:分组密码  正形置换  多项式  正形置换多项式  构造方法  多项式次数  对应  逆矩阵  有限域  求解  计数  应用  构造算法
文章编号:1671-4512(2007)02-0040-03
收稿时间:2005-11-15
修稿时间:2005年11月15

On the construction of orthomorphic permutations
Zhou Jianqin.On the construction of orthomorphic permutations[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(2):40-42,46.
Authors:Zhou Jianqin
Abstract:Orthomorphic permutations are important in block ciphers designs. Based on the definition of orthomorphic permutation, a practical method is presented to generate all orthomorphic permutations over F2^m, and it was verified that the number of all orthomoriphic permutations over F2^4 is 244 744 192. By the inverse matrix of a matrix over finite field F2^n, a brief method was presented to generate a permutation polynomial corresponding to every permutation over F2^m, and all orthomotheriphic permutation polynomials over F2^4 were analysed and found to be of order less than 14. It was proved that the order of permutation polynomial over F2^m is less than 2^m- 1.
Keywords:block cipher  orthomorphic permutation  polynomial
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号