基于双耦合驱动模型的时空混沌流密码系统  

Spatiotemporal chaotic stream cipher system based on the coupled drivers model

作　　者：郭晶[1] 袁坚[1] 王剑[1] 山秀明[1] 任勇[1] 

机构地区：[1]清华大学电子工程系,复杂工程系统实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2009年第8期1180-1183,1188,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(60674048)

摘　　要：为提高时空混沌流密码系统的抗误码能力,该文研究了这一系统的误码扩散特性,得到驱动序列中多个误码的扩散范围与系统参数的关系。提出一种基于双耦合驱动模型的时空混沌流密码系统,利用相互耦合的混沌系统生成驱动序列,并在接收端进行误码检测处理,对模型结构、误码检测、误码处理作了详细的设计,达到提高系统抗误码能力的目的。理论分析和仿真结果表明,该文提出的双耦合驱动模型可以显著地提高时空混沌流密码系统的抗误码能力。The error propagation characteristics of a spatiotemporal chaotic stream cipher system were analyzed to improve the error resistance. The relationship between the system parameters and the error propagation was then used to develop a spatiotemporal chaotic stream cipher system based on a coupled-driven model. In this system, the driver signals are generated by two coupled chaotic systems, with error detection and correction at the receiver. Theoretical analyses and simulations show that the model significantly improves the error resistance of spatiotemporal chaotic stream cipher systems.

关 键 词：时空混沌 流密码 误码扩散 双耦合驱动 误码检测 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]