计算机工程 ›› 2009, Vol. 35 ›› Issue (6): 162-163.doi: 10.3969/j.issn.1000-3428.2009.06.056

• 安全技术 • 上一篇    下一篇

基于复合离散混沌系统的图像加密算法

程 甲,赵怀勋,朱建杨   

  1. (武警工程学院通信工程系,西安 710086)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-03-20 发布日期:2009-03-20

Image Encryption Algorithm Based on Composite Discrete Chaotic System

CHENG Jia, ZHAO Huai-xun, ZHU Jian-yang   

  1. (Communication Engineering Department, Armed Police Engineering College, Xi’an 710086)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-03-20 Published:2009-03-20

摘要: 提出一种基于复合离散混沌系统的图像置乱加密算法,克服普通混沌量化图像置乱算法时间复杂度较高和需要对混沌轨道的概率分布有先验知识等缺陷。该算法利用复合离散混沌系统产生混沌序列,基于排序变换设计一个混沌图像置乱算法。理论分析和仿真实验表明,该算法具有较高的安全保密性能和抗攻击性能。

关键词: 图像加密, 复合离散混沌系统, 混沌序列, 置乱

Abstract: An image encryption algorithm based on composite discrete chaotic system is presented. Composite discrete chaotic system provides chaos sequence. This paper proposes an algorithm of chaotic images confusing based on the sort transformation. Theoretical analysis and simulation experiment show that, the algorithm guarantees the security of the encryption effectively and excellent performance against attack.

Key words: image encryption, composite discrete chaotic system, chaotic sequence, confusion

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