随机混沌动力系统组及序列加密算法  

Random chaotic dynamical systems group and stream cipher algorithms

作　　者：田野[1] 厉树忠[1] 

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070

出　　处：《计算机应用》2008年第7期1779-1780,1783,共3页journal of Computer Applications

摘　　要：简要分析了已有混沌加密算法的特点。为提供更有效的加密方法,提出了随机混沌动力系统组的概念。该系统组在一定条件下能构造出动力行为复杂的混沌子系统序列。基于此设计的序列加密算法,其加密过程受密钥、明文、系统组随机特征等多重因素影响,具有较高安全性。实验表明,该算法加密效果较好、密钥空间较大且易于实现。The characteristics of the existing cipher algorithms for chaotic system were briefly analyzed in this paper. In order to provide a more effective encryption technique, the concept of random chaotic dynamical systems group was given. The random chaotic systems group can generate complex chaotic systems sequence under given conditions. Therefore, a stream cipher algorithm based on the random chaotic dynamical systems group was presented directly, Its encryption process could be influenced by secret keys, plaintext and specialty of chaotic systems group. Compared with other algorithms, the algorithm has been proyed of higher security. The results of experiments show stream cipher algorithm based on the random chaotic dynamical systems group is easy to realize, Meanwhile, it has been tested with good encryption result and large secret space.

关 键 词：混沌 混沌动力系统组 序列密码 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]