提高混沌同步保密通信安全性的设计方案研究

Research on Chaotic Synchronized Secure Communication Schemes to Improve Security

在分析几种典型的混沌同步保密通信方案及针对混沌同步保密通信的分析破译方法的基础上,研究了一个新的基于Lorenz方程的主动一被动同步保密通信方案,其特点是具有动态密钥,从而对上述攻击方法具有抗破译能力.计算机仿真实验和安全性测试分析结果均表明,该方案的同步效果好、安全性高,达到用基于相空间重构、基于混沌同步的分析方法难以破译的效果。

The security of several typical chaotic synchronized secure communication schemes , as well as the respective unmasking methods are studied to find the way to improve the security. A new secure communication scheme based on active-passive decomposition using parameters perturbation technique, which makes it has a kind of dynamic secrete key, is analyzed in this paper. The dynamic secrete key contributes to the capacity against the unmasking methods. Computer simulation and security test results demonstrate that the scheme is high in security and good in synchronization properties , and that it is safe to the attack of the unmasking methods mentioned in this paper.