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一种基于超混沌M-G系统的图像加密算法

A Image Encryption Algorithm Based on Hyperchaos M-G System
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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.
作者 李翠彦 高飞
机构地区 北京理工大学 信息科学技术学院电子工程系
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
关键词 超混沌 时滞 随机性 混沌同步 图像加密算法 hyperchaos time-delay random chaos synchronization
分类号 TP391.41 [自动化与计算机技术—计算机应用技术] O415.5 [理学—理论物理]
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参考文献13

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二级参考文献23

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共引文献57

信号处理
2007年 第6期

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