| 基于斜帐篷映射的混沌图像加密系统的改进 |
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| 引用本文： | 张爱华,张华,薄禄裕.基于斜帐篷映射的混沌图像加密系统的改进[J].南京邮电大学学报(自然科学版),2011,31(3):79-82. |
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| 作者姓名： | 张爱华 张华 薄禄裕 |
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| 作者单位： | 南京邮电大学理学院,江苏南京,210046 |
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| 基金项目： | 国家自然科学基金(61070234); 南京邮电大学校科研基金(NY210018)资助项目 |
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| 摘 要： | 利用动态参数的离散斜帐篷映射,结合简单的一维混沌映射像素值替代方法,提出了一种改进的基于离散斜帐篷映射的混沌加密方法。仿真结果表明,该方法不仅继承了原有系统的优良密码学特性,而且与传统斜帐篷混沌序列加密算法相比,在图像不失真的情况下大大增强图像加密的安全性。
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| 关 键 词： | 斜帐篷映射 混沌序列 图像加密 动态参数 |
A Improvement for Chaotic Image Cryptosystem Based on Skew Tent Map |
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| ZHANG Ai-hua,ZHANG Hua,BO Lu-yu.A Improvement for Chaotic Image Cryptosystem Based on Skew Tent Map[J].Journal of Nanjing University of Posts and Telecommunications,2011,31(3):79-82. |
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| Authors: | ZHANG Ai-hua ZHANG Hua BO Lu-yu |
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| Institution: | ZHANG Ai-hua,ZHANG Hua,BO Lu-yu(College of Science,Nanjing University of Posts and Telecommuncations,Nanjing 210046,China) |
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| Abstract: | A new chaotic cryptosystem based on skew tent map was proposed by making use of a mixed chaotic sequences,which are produced by combining the dynamic encryption parameter and a simple single-dimensional chaotic map.The simulation result shows the proposed cryptosystem inherited the advantages of the original one and it shows that the proposed algorithm greatly enhances the security of image encryption without image distortion comparing with the traditional skew tent map chaotic encryption algorithm. |
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| Keywords: | skew tent map chaotic sequences image encryption dynamic parameter |
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