摘要
针对网络数据传输的安全问题,提出了一种基于混沌同步的保密通信方法。通过设计非线性状态观测器,构造了两个混沌系统并使其保持同步,从而实现加密信号的完全再现。同时分析了同步系统的稳定性,给出了设计非线性状态观测器的方法。应用熟知的Rossler混沌系统构建保密通信系统,并进行分析和仿真。仿真结果表明,该方法具有设计简单、同步速度快、保密程度高等特点。
To solve the security of data transmission in network, a secure communication method based on chaotic synchronization is presented. By designing nonlinear state observer, two chaotic systems are constructed and kept synchronized, hence, encrypted signals can be completely recurred. At the same time, the stability of the synchronized system is analyzed, with the method for designing nonlinear state observer being proposed. A secure communication system is constructed with the example of a well-known Rossler chaotic system, of which analysis and simulation results are given. Simulation results show that the proposed scheme has the characteristics of simple design, fast synchronized speed and high security.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2007年第5期699-702,共4页
Systems Engineering and Electronics
基金
科技创新基金资助课题(鄂科技发计[2005]57号)
关键词
混沌系统
保密通信
混沌同步
非线性状态观测器
chaotic system
secure communication
chaotic synchronization
nonlinear state observer
