基于时空混沌系统和脉冲同步控制的加密系统设计

摘要

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。%In view of the low security level of the existing encryption system, an encryption system based on the spatiotemporal chaos is designed. In the basic structure of the encryption system, the authors study the design of emitter, receiver and synchronization control scheme in the eneryption system. An emitter and receiver of different structures are designed based on the spatiotemporal chaotic system which is KuramotoSivashinsky system and a synchronization control scheme suitable for safe communication is proposed, which is a combination of the impulse control and the feedback control. A complete set of encryption system is designed in the light of the image encryption, the numerical experiments validate the effectiveness of the encryption algorithm, and analysis results show that the encryption algorithm has higher security.