北京航空航天大学学报 ›› 2011, Vol. 37 ›› Issue (7): 811-816.

• 论文 • 上一篇    下一篇

基于可变S盒的随机加密方案

王文华, 郑志明   

  1. 北京航空航天大学 数学与系统科学学院, 北京 100191
  • 收稿日期:2010-07-08 出版日期:2011-07-30 发布日期:2011-08-04
  • 作者简介:王文华(1986-),男,河南新乡人,硕士生,wenhuawang1986@gmail.com.
  • 基金资助:

    973国家重点基础研究发展计划资助项目(2005CB321902)

Random encryption scheme based on variable S-boxes

Wang Wenhua, Zheng Zhiming   

  1. School of Mathematics and Systems Science, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2010-07-08 Online:2011-07-30 Published:2011-08-04

摘要: 研究了可变随机S盒对分组密码安全性的意义,给出了一种新的使用可变随机S盒的随机化分组密码算法,并在此基础上提出了相应的加密方案:在分组密码算法中,保持算法结构不变,将S盒作为变量,利用可变的S盒来抵御密码分析.随后给出安全性评估,证明该方案提高了分组密码抵抗目前已知攻击的能力.最后从S盒的生成方式与算法结构两方面讨论了改进策略.

Abstract: How the variable S-boxes would affect the security of the block cipher was studied and a new block cipher using random variable S-boxes was presented. A new encryption scheme based on such block cipher was put forward: the structure of the original encryption algorithm was kept, the S-box was taken as a variable and variable S-box was used instead of the primary one, which could increase the resistance against those known attacks. The security evaluation proves the scheme secure. Furthermore, a discussion on the improvement about the generation of the S-boxes and structure of the algorithms was given.

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