计算机与现代化

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一种结合有限域运算的混沌映射在数字图像加密中的应用

  

  1. (1.达州职业技术学院,四川达州635001;2.西南大学计算机与信息科学学院,重庆400715;
    3.四川省达州市统计局,四川达州635000)
  • 收稿日期:2016-11-16 出版日期:2017-07-20 发布日期:2017-07-20
  • 作者简介:刘冰(1970-),男,四川达州人,达州职业技术学院副教授,西南大学计算机与信息科学学院访问学者,本科,研究方向:信息安全,图像处理,CAD开发。
  • 基金资助:

    四川省教育厅重点科技计划项目(14ZA0330); 四川省达州市科技计划项目(2014-8220)

Application of Chaotic Mapping Combining Finite Field Operation  in Digital Image Encryption

  1. (1.Dazhou Vocational and Technical College, Dazhou 635001, China;
     2. College of Computer and Information Science, Southwest University, Chongqing 400715, China;
    3. Dazhou Municipal Bureau of Statistics of Sichuan Province, Dazhou 635000, China)
  • Received:2016-11-16 Online:2017-07-20 Published:2017-07-20

摘要: 通过引入一种三维混沌映射并结合有限域上的矩阵运算处理,提出一种新的图像加密方法。首先运用混沌映射把原始图像映射为2个二维矩阵;然后将原始图像矩阵分别与这2个矩阵在有限域上执行加和乘积的运算。实验结果表明,加密图像在抗干扰性能与执行效率等方面达到了较为满意的效果。

关键词: 数字图像, 图像加密, 三维混沌映射, 有限域运算, 灰度直方图, 相关性, 信息熵

Abstract: A new method of image encryption is proposed by introducing a 3D chaotic mapping and combining matrix operations on finite fields. Firstly, the original image is mapped into two 2D matrices by using chaotic mapping. Then, the original image matrix is respectively combined with the two matrices to perform the addition and multiplication operations on the finite fields. The experimental results show that the proposed algorithm achieves satisfactory results in terms of anti-jamming capability and execution efficiency.

Key words: digital image, image encryption, 3D chaotic mapping, finite field operation, gray histogram, correlation, information entropy

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