| 基于图像相关性的混沌图像加密算法 |
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| 引用本文： | 张伟,朱志良,于海.基于图像相关性的混沌图像加密算法[J].东北大学学报(自然科学版),2011,32(4):496-500. |
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| 作者姓名： | 张伟 朱志良 于海 |
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| 作者单位： | 张伟,ZHANG Wei(东北大学,信息科学与工程学院,辽宁,沈阳,110819);朱志良,于海,ZHU Zhi-liang,YU Hai(东北大学,软件学院,辽宁,沈阳,110819) |
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| 基金项目： | 国家自然科学基金，辽宁省自然科学基金，辽宁省高等学校优秀人才支持计划，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 利用图像相邻像素间的相关性,提出了一种将4个相邻的像素点"分而治之"的方法,对传统混沌加密框架中的置乱过程进行改进.首先对相邻的像素点进行分离,对分离后的4组像素点使用4组不同参数的"猫映射"进行置乱,最后再进行组合和扩散操作.模拟结果表明,该算法在保证加密算法安全性的前提下,减少了加密算法中置乱操作的次数,从而有效地...
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| 关 键 词： | 混沌理论 图像加密 明文相关性 图像置乱 图像扩散 |
A Chaotic Image Encryption Algorithm Based on Image Correlation |
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| ZHANG Wei,ZHU Zhi-liang,YU Hai.A Chaotic Image Encryption Algorithm Based on Image Correlation[J].Journal of Northeastern University(Natural Science),2011,32(4):496-500. |
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| Authors: | ZHANG Wei ZHU Zhi-liang YU Hai |
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| Institution: | ZHANG Wei1,ZHU Zhi-liang2,YU Hai2(1.School of Information Science & Engineering,Northeastern University,Shenyang 110819,China,2.School of Software,China.) |
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| Abstract: | Considering the high correlation among adjacent pixels,a divide and conquer algorithm was proposed for four adjacent pixels to improve the permutation phase of traditional chaotic encryption schemes.Adjacent pixels were first separated,and then the four groups of separated pixels were permutated using cat maps of the four groups having different parameters,followed by reconstruction and diffusion.Simulations results indicated that,when security of the encryption algorithm could be guaranteed,permutation and... |
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| Keywords: | chaos theory image encryption plain-image correlation image permutation image diffusion |
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