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An Analysis of Anti-Differential Cryptanalysis Attack for Chaotic Block Cipher Based on Feistel Structure
Author(s): Hao Zheng1, 2 Geng Zhao2 Erfan Zhao1, 2 Xiaoli Zheng3 1 School of Communication Engineering, Xidian University, Xi’an Shanxi 710071, China 2 Department of Computer Science and Technology, Beijing Electronic Science and Technology Institute, Beijing 100070, China, 3 PLA Institute of Physical Education, Guangzhou Guangdong 510500, China
Pages: 60-
66
Year: 2012
Issue:
2
Journal: Beijing Electronics
Keyword: 混沌分组密码; 扩展Feistel结构; 不可能差分; 动态S盒;
Abstract: 混沌系统具有良好的伪随机性、混频特性、对初始状态的敏感性、复杂的映射参数等特性,这些特性与密码学要求的产生伪随机信号、混乱和扩散、加解密密钥的难以预测等属性是十分吻合的。因此近些年来,不少学者提出了多种基于混沌理论的密码算法,但对其安全性大多草草一笔带过,并没有详尽的安全性分析。本文针对一种较新的基于Feistel结构的混沌分组密码,应用不可能差分的分析方法,分别在固定S盒、动态S盒两种情况对该算法进行了分析。分析结果表明,相比较于传统分组密码,该混沌分组密码能够更有效的抵抗差分密码攻击。
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