基于复杂网络的多级混沌保密通信系统的研究

Study on Multistage Chaos Synchronized System for Secure Communications of Complex Networks

基于Lyapunov稳定性理论,研究了全局耦合网络的渐近同步,提出了一种全局混沌同步方案,并将其应用于保密通信.提出了一种复杂网络中多个节点之间进行多次加密的保密通信方法,在发送端,有用信号首先与混沌信号进行合成,然后将合成的混沌信号作用于另一个节点进行2次加密;在接收端,发送系统与接收系统同步以后,信道中传输的信号经2级解调后恢复出原有用信号.最后以Lorenz系统为节点进行数值仿真,验证了结论的可靠性.

Based on Lyapunov stability theorem,this paper studies the asymptotic synchronization of globally coupled network,and proposes a method for a global chaos synchronization and for its application to secure communication.It also proposes a novel method of chaos encryption,and proves that after encrypting in the previous two transmitters,information signal can be recovered exactly at the receiver end.Finally,the result of numerical calculation for the global connected networks with Lorenz nodes shows that the theorem is reliable.