| 基于非对称密码系统的彩色图像加密技术 |
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| 引用本文： | 王红娟,张颖颖,黄义定,马毛粉,秦怡. 基于非对称密码系统的彩色图像加密技术[J]. 应用光学, 2013, 34(6): 980-984 |
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| 作者姓名： | 王红娟 张颖颖 黄义定 马毛粉 秦怡 |
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| 作者单位： | 1.南阳师范学院 物理与电子工程学院,河南 南阳 473061 |
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| 摘 要： | 为了实现对彩色图像的加密，提出一种基于傅里叶变换和非对称密钥加密系统的加密方法。把彩色图像分成三基色分量:红，绿，蓝。然后对这3帧灰度图像的傅里叶频谱进行截取，合成一个目标图像，该目标图像包含了原始彩色图像的大部分信息。对此目标图像的幅度和相位分别用非对称密钥加密系统加密，即实现了彩色图像的加密。 给出了理论分析和计算机模拟结果，实验结果证实了该方法的可行性。
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| 关 键 词： | 图像加密 彩色图像 非对称密码系统 密钥 |
Color image encryption technology based on asymmetric cryptosystem |
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| WANG Hong-juan,ZHANG Ying-ying,HUANG Yi-ding,MA Mao-fen,QIN Yi. Color image encryption technology based on asymmetric cryptosystem[J]. Journal of Applied Optics, 2013, 34(6): 980-984 |
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| Authors: | WANG Hong-juan ZHANG Ying-ying HUANG Yi-ding MA Mao-fen QIN Yi |
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| Affiliation: | 1.College of Physics and Electronic Engineering,Nanyang Normal University,Nanyang 473061,China |
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| Abstract: | In order to encrypt color image, a method based on Fourier transform and asymmetric cryptosystem is proposed. Firstly, a color image is separated into three primary components: red, green, and blue. Then Fourier spectra of the three gray images are intercepted respectively and combined into a target image, and the target image contains most of the original color image information. The amplitude and phase of this target image are encrypted using asymmetric cryptosystem, which means the original color image is encrypted. In this paper, the theoretical analysis and computer simulation are proposed, and the experiment results verify the feasibility of this method. |
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| Keywords: | image encryption color image asymmetric cryptosystem secret key |
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