Chaotic Synchronization And Its Application Of Secure Communication

With the development of research on chaotic synchronization and increased hardware level, the technology of chaotic synchronization is to be application, chaotic secure communication stands on the focus of research on application, how to create efficient applicable, secure chaotic secure communication is the key. In this thesis,fir-stly we present basic conception of chaos and chaotic synchronization system and analyse the brief technology of chaotic synchronization. In the second part, the synchronization prosperity of several chaotic secure communication methods are discussed and compared, from which we think the active-passive synchronization method is the best one for building chaotic synchronization secure communication system. And then, three typical unmasking methods against chaos synchronized communication systems are discussed. The effective way to improve the security is proposed. A chaotic synchronized secure communication scheme based on the active-passive pattern, with time-varying behavior via a parameter perturbation technique is proposed in the end of this thesis. The computer simulation and performance analysis results show that the compensation is well done to solve the conflict between the synchronized error and the parameter sensitivity. Its capacity against attacks is also discussed. The scheme is well applicable.