基于可变S盒的随机加密方案

王文华; 郑志明

基于可变S盒的随机加密方案

北京航空航天大学数学与系统科学学院, 北京 100191

基金项目: 973国家重点基础研究发展计划资助项目(2005CB321902)

详细信息

作者简介:
王文华(1986-),男,河南新乡人,硕士生,wenhuawang1986@gmail.com.

中图分类号: TP 309.7
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- 文章访问数: 2543
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- 被引次数: 0
出版历程
- 收稿日期: 2010-07-08
- 网络出版日期: 2011-07-30

Random encryption scheme based on variable S-boxes

School of Mathematics and Systems Science, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

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.
- 密码学 /
- 数据安全 /
- 随机数发生器 /
- 分组密码 /
- 密码分析
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.
- cryptography /
- security of data /
- random number generation /
- block cipher /
- cryptanalysis

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参考文献(1)

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