摘要
针对低维混沌序列加密图像保密性差,而复合混沌序列又使得混沌系统结构复杂,同步性差,本文研究了一种基于参数辨识的超混沌时滞模型的图像加密算法,引入位图像加密的思想,并对待加密图像信息进行加密前处理,使得图像信息能够应用M-G超混沌模型进行加解密。此系统结构简单,实用性强,不需要混沌同步。试验和理论分析表明加密效果是令人满意的。
The secrecy capability usually decreases when using low dimension chaotic sequence to encrypt signal,while system is not practical and bad synchronization when using complicated composite chaotic sequence. Therefore, a new encryption algorithm was proposed. It adopted time-delay hyperchaos system based on parameter identification,introduced bit image encryption,and processed the plain text before encryption in order to make the image date fit M-G encryption system. The system was simple and practical,it needn＇ t chaos synchronization. Experimental results and theory analysis indicate that encryption effect is satisfactory.
出处
《信号处理》
CSCD
北大核心
2007年第6期896-899,共4页
Journal of Signal Processing
作者简介
李翠彦（1982-），女，硕士研究生，主要研究方向：混沌保密通信。
