基于附加密钥复用的彩色图像加密技术

郭飞鹏, 李婧, 巩琼, 刘红钊, 秦怡

郭飞鹏, 李婧, 巩琼, 刘红钊, 秦怡. 基于附加密钥复用的彩色图像加密技术[J]. 应用光学, 2014, 35(4): 626-631.
引用本文: 郭飞鹏, 李婧, 巩琼, 刘红钊, 秦怡. 基于附加密钥复用的彩色图像加密技术[J]. 应用光学, 2014, 35(4): 626-631.
shu
Guo Fei-peng, Li Jing, Gong Qiong, Liu Hong-zhao, Qin Yi. Color image encryption by additional key multiplexing[J]. Journal of Applied Optics, 2014, 35(4): 626-631.
Citation: Guo Fei-peng, Li Jing, Gong Qiong, Liu Hong-zhao, Qin Yi. Color image encryption by additional key multiplexing[J]. Journal of Applied Optics, 2014, 35(4): 626-631.
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基于附加密钥复用的彩色图像加密技术

  • 1.

    南阳师范学院 审计处,河南 南阳 473061;

  • 2.

    南阳师范学院 数学与统计学院,河南 南阳 473061;

  • 3.

    南阳师范学院 物理与电子工程学院,河南 南阳 473061

详细信息
    作者简介:

    郭飞鹏（1978-），男，河南周口人，工程师，主要从事光电信息处理方面的研究。 Email：945260452@qq.com

    通讯作者:

    秦怡（1981-），男，河南驻马店人，副教授，主要从事光电信息处理方面的研究。 Email：641858757@qq.com

  • 中图分类号: TN911.73；TP751

Color image encryption by additional key multiplexing

  • 1.

    Department of Audit,Nanyang Normal University,Nanyang 473061,China;

  • 2.

    School of Mathematics and Statistics,Nanyang Normal University,Nanyang 473061,China;

  • 3.

    School of Physics and Electronic Engineering,Nanyang Normal University,Nanyang 473061,China

摘要

    摘要
  • 摘要: 为了避免使用复数来密文记录和传输彩色图像，提出一种基于附加密钥复用的彩色图像加密方法。先把彩色图像分成三基色分量：红、绿、兰；选取3个独立的附加密钥分别对这3个分量使用改进的光学联合相关变换法加密，得到3个联合功率谱。把这3个联合功率谱进行叠加，得到的复合联合功率谱即加密结果，其包含了原始彩色图像的全部信息。解密时，使用加密时所用的3个附加密钥分别对此复合联合功率谱进行解密，即可正确地重建原始图像的红、绿、蓝分量，进而恢复出原始图像。计算机仿真结果表明，本方法可以将一幅原始彩色图像隐藏于单幅强度图像之中。由于记录强度图像无需参考光波，因此本方法在加密过程中成功地避免了干涉装置，降低了对加密环境的要求。此外，相比于其他彩色图像隐藏方法需要加密至复数密文之中，本方法的密文大小仅为其二分之一，加密效率提高了一倍。
    Abstract: In order to avoid the record and transmission of color image with complex ciphertext, we proposed to encrypt color images with a modified joint transform correlator by additional key multiplexing. First of all, a color image was separated into 3 components: red, green, and blue. Then the 3 grey images were encrypted with different additional keys to generate corresponding joint power spectra, and the encryption results were got, namely multiplexed joint power spectra by superposing the above mentioned joint power spectra. Furthermore, the decryption of the multiplexed joint power spectra with the correct additional key could give the corresponding primary grey images. Computer simulations show that the proposal can hide a color image into a single intensity pattern. Since recording intensity image is free from the reference wave, our method relaxes the environment and avoids interference equipment. In addition, compared with previous methods that encrypt image into complex ciphertext, the size of ciphertext of our approach is only half of it, thus the efficiency of the encryption is further improved.
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    • 参考文献(1)
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  • 刊出日期:  2014-07-14

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