通信学报 ›› 2019, Vol. 40 ›› Issue (12): 21-28.doi: 10.11959/j.issn.1000-436x.2019230

• 学术论文 • 上一篇    下一篇

周期为p2的q元序列的k–错线性复杂度

吴晨煌1,2,许春香1,杜小妮3   

  1. 1 电子科技大学计算机科学与工程学院,四川 成都 611731
    2 莆田学院应用数学福建省高校重点实验室,福建 莆田 351100
    3 西北师范大学数学与统计学院,甘肃 兰州730070
  • 修回日期:2019-11-02 出版日期:2019-12-25 发布日期:2020-01-16
  • 作者简介:吴晨煌(1981– ),男,福建莆田人,电子科技大学博士生,莆田学院副教授,主要研究方向为序列密码|许春香(1965– ),女,湖南长沙人,博士,电子科技大学教授、博士生导师,主要研究方向为信息安全、密码学及其应用。|杜小妮(1972– ),女,甘肃庆阳人,博士,西北师范大学数学与统计学院信息研究所副所长、博士生导师,主要研究方向为密码学、编码理论和信息安全。
  • 基金资助:
    国家自然科学基金资助项目(61772292);国家自然科学基金资助项目(61772022);国家自然科学基金资助项目(61872060);国家自然科学基金国际(地区)合作交流项目NSFC-RFBR(61911530130);福建省自然科学基金资助项目(2018J01425)

k-error linear complexity of q-ary sequence of period p2

Chenhuang WU1,2,Chunxiang XU1,Xiaoni DU3   

  1. 1 School of Computer Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China
    2 Provincial Key Laboratory of Applied Mathematics,Putian University,Putian 351100,China
    3 College of Mathematics and Statistics,Northwest Normal University,Lanzhou 730070,China
  • Revised:2019-11-02 Online:2019-12-25 Published:2020-01-16
  • Supported by:
    The National Natural Science Foundation of China(61772292);The National Natural Science Foundation of China(61772022);The National Natural Science Foundation of China(61872060);Projects of International Cooperation and Exchanges NSFC(61911530130);The Natural Science Foundation of Fujian Province(2018J01425)

摘要:

基于矩阵中元素统计的方法,给出了计算周期为p<sup>2</sup>的q元序列k–错线性复杂度的新方法,其中,p,q为奇素数且q为模p<sup>2</sup>的本原元。给出了一个一般性的结论及其证明,并通过列举2类周期为p<sup>2</sup>的q元序列及其实例来验证结论的正确性。该方法不需要迭代计算,通过程序实现并与现有算法进行效率比较,结果表明所给出的新算法在计算周期为p<sup>2</sup>的q元序列的k–错线性复杂度方面效率明显更高。

关键词: 序列密码, q元序列, k–错线性复杂度, 费马商序列, 广义割圆序列

Abstract:

Based on element statistics in a matrix,a new efficient computing method for computing the k-error linear complexity of q-ary sequence of period p<sup>2</sup>was proposed,where p,q were odd primes and q modulo p<sup>2</sup>was primitive.A general result and a concrete proof were showed.To verify the correctness of the result,two kinds of q-ary sequence of period p<sup>2</sup>were illustrated.Because the new method does not need iterative calculation and when it is implemented by program and compared with existing algorithms,the results show that the proposed new algorithm is significantly more efficient in calculating k-error linear complexity of q-ary sequence of period p<sup>2</sup>.

Key words: stream cipher, q-ary sequence, k-error linear complexity, Fermat quotient sequence

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