离散超混沌同步保密通信系统的设计与分析

Secure Communication System Using Discrete Hyper-chaotic Synchronization

十多年来,混沌保密通信由于其良好的特性而受到了极大的关注.Solak发现用已知明文攻击和选择明文攻击可以成功攻击离散混沌加密方法.本文提出一种将离散混沌同步和分段线性函数加密技术相结合以获得较高安全性的改进方案.仿真结果及分析表明,新的保密通信系统具有抵抗已知明文攻击,选择明文攻击以及EFA攻击的能力.

In the past decades, chaos secure communication has been paid much attention due to its desirable properties. It is found by Solak that known plaintext and chosen plaintext attacks can successfully be launched to against discrete-time chaotic encryption method. In this paper, an improved scheme, which is in combination with discrete-time chaotic synchronization and piece-wise linear function encryption technique, is proposed to obtain higher security. Simulation results and analysis show that the new secure communfcation system can resist known plaintext attacks, chosen plaintext attacks and EFA attacks.