| 一种基于二维Logistic映射的二值图像加密方案 |
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| 引用本文： | 张硕,蔡如华,冯祖针.一种基于二维Logistic映射的二值图像加密方案[J].桂林电子科技大学学报,2009,29(3):243-246. |
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| 作者姓名： | 张硕 蔡如华 冯祖针 |
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| 作者单位： | 桂林电子科技大学数学与计算科学学院,广西桂林,541004 |
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| 基金项目： | 广西教育厅资助项目，广西自治区科学基金，桂林电子科技大学基金 |
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| 摘 要： | 图像置乱变换是信息隐藏中图像加密的常用方法.但传统的图像置乱具有一定的规律性,再加上置乱具有周期性,很容易被攻击者击破.根据幻方变换和Arnold置乱,提出一种基于二维Logistic混沌映射的二值图像加密方案.通过对原图进行分块幻方变换,用二维Logistic混沌映射生成的二值序列与其进行异或操作,并进行Arnold置乱.实验结果表明该方案的加密速度快、效果好,密钥空间大,解密图像与原图像一致性良好,且具有很强的抗干扰能力.
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| 关 键 词： | Arnold置乱 幻方置乱 二值图像加密 Logistic混沌映射 |
A Binary Image Encryption Algorithm Based on Coupled Logistic Chaotic Map |
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| ZHANG Shuo,CAI Ru-hua,FENG Zu-zhen.A Binary Image Encryption Algorithm Based on Coupled Logistic Chaotic Map[J].Journal of Guilin Institute of Electronic Technology,2009,29(3):243-246. |
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| Authors: | ZHANG Shuo CAI Ru-hua FENG Zu-zhen |
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| Affiliation: | School of Mathematics and Computational Science;Guilin University of Electronic Technology;Guilin 541004;China |
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| Abstract: | Image scrambling transformation is a common method utilized in information hiding for image encryption.However,as traditional image scrambling has certain regularity and periodicity,it can easily be broken by the attacker.Based on coupled logistic chaotic map,magic square transformation and Arnold transformation,a binary image encryption algorithm is proposed.Firstly,the image is transformed into magic square blocks.Secondly,the image is encrypted by exclusive OR algorithm with the binary sequences generate... |
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| Keywords: | Arnold transformation magic square transformation binary image encryption logistic chaotic map |
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