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针对现有加密系统安全性不高的问题,设计了基于时空混沌的加密系统。在混沌同步加密系统的基本结构下研究了其中的发射器、接收器和同步控制方案的设计问题。设计了基于时空混沌系统Kuramoto-Sivashinsky的发射器和异结构接收器,给出了基于反馈控制和脉冲控制相结合且适用于保密通信传输的同步控制方案。结合图像加密设计了一整套加密系统,数值实验验证了算法的有效性,分析结果表明算法具有较高的安全性。
Aiming at the problem of low security of existing encryption systems, an encryption system based on space-time chaos is designed. The design of transmitter, receiver and synchronization control scheme are studied under the basic structure of chaotic synchronization encryption system. Based on Kuramoto-Sivashinsky’s spatiotemporal transmitter and heterostructure receiver, a synchronization control scheme based on feedback control and impulsive control and suitable for secure communication transmission is proposed. A set of encryption system is designed based on image encryption. The numerical experiment verifies the effectiveness of the algorithm. The analysis results show that the algorithm has high security.