混沌加密和常规加密相结合的一个系统方案

A NOVEL SCHEME OF CHAOTIC ENCRYPTION SYSTEM

针对国际上在混沌的定义、基本特性以及混沌保密通信原理等方面的一些不同理解,进行了较深入的讨论,并提出了自己的见解.在此基础上,论证了不可预测的混沌信号的产生方法,对混沌加密和传统加密系统进行了对比,并提出了一个混沌——传统加密的级联系统方案.主要工作在于阐述新方案的原理,提出了发挥混沌系统的不可预测性在混沌加密中的作用和将混沌加密与传统加密方法结合起来的思想,从而提出了提高加密系统安全性的一个新的重要研究课题.

In this paper,the authors present their opinion on different understandings related to the definitions and basic properties of chaos,as well as of the security of chaotic cryptosystems.The method of producing chaotic signals is explored and chaotic encryption is compared with conventional encryption.A novel scheme of cascading chaotic and conventional encryption stages is proposed.The new scheme makes use of the unpredictability of chaotic systems.It is shown that the combination of chaotic encryption and conventional encryption is important in raising the security of cryptosystems.