| 基于三维整数拟仿射变换的对称图像加密算法 |
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| 引用本文： | 叶瑞松,林润海. 基于三维整数拟仿射变换的对称图像加密算法[J]. 汕头大学学报(自然科学版), 2009, 24(3): 60-67 |
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| 作者姓名： | 叶瑞松 林润海 |
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| 作者单位： | 汕头大学数学系,广东,汕头,515063 |
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| 摘 要： | 把二维有限整数域上的拟仿射变换推广到三维上,重点研究三维有限整数域上拟仿射变换的性质及构造方法.用这种新方法置乱图像的像素位置(如果需要的话,灰度值也可以改变),并用混沌映射来生成变换的参数,从而增强统计和差分攻击的抵抗力.实验结果表明,该方法安全性高且加密速度快.
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| 关 键 词： | 仿射变换 拟仿射变换 图像置乱 |
Symmetric Image Encryption Scheme Based on 3-D Quasi-Affine Transformation over Limited Integer Grids |
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| YE Rui-song,LIN Run-hai. Symmetric Image Encryption Scheme Based on 3-D Quasi-Affine Transformation over Limited Integer Grids[J]. Journal of Shantou University(Natural Science Edition), 2009, 24(3): 60-67 |
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| Authors: | YE Rui-song LIN Run-hai |
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| Affiliation: | YE Rui-song, LIN Run-hal (Department of Mathematics, Shantou University, Shantou 515063, Guangdong, China) |
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| Abstract: | In this paper, the two-dimensional quasi-affine transformations over limited integer grids are generalized to three-dimensional ones. The properties of three-dimensional quasiaffine transformations are analyzed and the corresponding construction scheme is proposed. The three-dimensional quasi-affine transformations are employed to shuffle the positions of images. Experimental results show that the proposed scheme owns good encryption effects and robustness against statistical and difference attacks. |
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| Keywords: | affine transformation quasi-affine transformation image scrambling |
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