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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。
In order to improve the anti-error ability of spatio-temporal chaotic stream cipher system, this paper studies the error-diffusing characteristics of the system and obtains the relationship between the diffusion range of multiple error codes and the system parameters in the driving sequence. A spatio-temporal chaotic flow cipher system based on dual-coupled driving model is proposed. The driving sequence is generated by mutual coupling chaotic system, and the error detection processing is carried out at the receiving end. The model structure, error detection and error processing are detailed Design, to achieve the purpose of improving system error resilience. The theoretical analysis and simulation results show that the dual coupled driving model proposed in this paper can significantly improve the anti-error ability of spatio-temporal chaotic flow cryptosystems.