计算机工程 ›› 2012, Vol. 38 ›› Issue (20): 93-96.doi: 10.3969/j.issn.1000-3428.2012.20.024

• 安全技术 • 上一篇    下一篇

一种基于多混沌映射的图像加密算法

郭晓丛,向 菲,刘 伟   

  1. (河南科技大学电子信息工程学院,河南 洛阳 471003)
  • 收稿日期:2011-12-19 修回日期:2012-02-24 出版日期:2012-10-20 发布日期:2012-10-17
  • 作者简介:郭晓丛(1979-),女,硕士研究生,主研方向:混沌图像加密;向 菲,副教授;刘 伟,副教授、博士
  • 基金项目:
    国家档案局科研计划基金资助项目(2011-X-10);河南省档案局科技计划基金资助项目(2011-X-37)

An Image Encryption Algorithm Based on Multiple Chaotic Mapping

GUO Xiao-cong, XIANG Fei, LIU Wei   

  1. (College of Electronic & Information Engineering, Henan University of Science and Technology University, Luoyang 471003, China)
  • Received:2011-12-19 Revised:2012-02-24 Online:2012-10-20 Published:2012-10-17

摘要: 为提高图像信息的安全性,提出一种基于多混沌映射的图像加密算法。将混沌序列和彩色图像像素点的坐标看作空间上的两点,利用2个点的距离公式计算生成加密因子,将图像与该加密因子做相应的代数运算,从而获得加密图像。仿真结果表明,该算法易于实现,对密钥具有较强的敏感性,密钥空间大,加密图像的像素值分布较均匀。

关键词: 混沌, 图像加密, 敏感性, 二维Logistic映射, Ikeda映射, Hénon映射

Abstract: This paper has brought forward a way of image encryption algorithm based on multiple chaotic maps for improving the safety of image information. This algorithm regards the chaotic sequence and the pixel coordinate of the color image as two points in space, using the formula of the distance of two points in space to generate the sequences to encrypt the image. Simulation results demonstrate that the algorithm is easy to carry out, has a strong sensitive effect on the key, its key space is enough large, and it has very uniform pixel-value distribution.

Key words: chaos, image encryption, sensibility, two-dimensional Logistic mapping, Ikeda mapping, Hénon mapping

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