摘要
介绍了利用混沌映射系统进行保密通信的理论依据。分析了一种利用混沌动力学方程所形成的混沌序列来对图像进行加密的方案,并用程序语言予以实现。针对这种一维混沌加密算法,在加密方程、参数和初始值完全未知的前提下,运用相空间重构法和穷举法对其进行了破译研究并成功将其破译。总结了加密和破译方法的优缺点,提出了一种抗破译能力更强的加密方案。
The chaotic encryption system which makes use of chaos mapping system to carry on the secret correspondence is introduced. The method wtfich makes use of the chaos dynamics equation to cant on encrypting to pictures is put forward and realized with the program. For the one-dimension chaotic encryption method, it is successfully deciphered by the phase-space reconstruction theory and exhaustive method with the encryption function, parameter and the original value completely unknown. In the end, the advantages and the disadvantages of the encrypting and deciphering methods are discussed and a kind of enerypting project which is more difficult to be deciphered is put forward.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2007年第3期45-49,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(10504043)
关键词
混沌
时间序列
破译
相空间重构
自相关函数
穷举法
chaos
time series
decipher
phase- space reconstruction
autocorrelafion function
exhaustive method
