Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (20): 49-51.

• 学术探讨 • Previous Articles     Next Articles

One kind based on double unidimensional chaos system pictureencryption algorithm

HAN Feng-ying1,2,ZHU Cong-xu2   

  1. 1.Changsha Aviation Professional Technology College,Changsha 410124,China
    2.Information Science and Engineering College,South Central University,Changsha 410083,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-11 Published:2007-07-11
  • Contact: HAN Feng-ying



  1. 1.长沙航空职业技术学院,长沙 410124
    2.中南大学 信息科学与工程学院,长沙 410083
  • 通讯作者: 韩凤英

Abstract: Proposes pictureencryption algorithm based on the double unidimensional chaos system.This algorithm uses the double unidimensional chaos system to carry onthe substitution and the replacement transformation to the picture,uses the double chaos system to expand the key space,and increased the key complexity;the substitution and set gathers enhanced theencryption security.the fruit indicates that,thealgorithm calculates speed quick,scrambled text distributedcharacteristic good,the scrambled text dense is sensitive,the bright this algorithm had the high security.

Key words: chaotic encryption, Logistic map, sine iterative map, image encryption

摘要: 提出了一个基于双一维混沌系统的图像加密算法。该算法利用双一维混沌系统对图像进行替代和置换变换,采用双混沌系统扩大了密钥空间,并增加了密钥的复杂性;将替代和置换结合提高了加密的安全性。实验结果表明,该算法运算速度快,密文分布特性好,密文对密钥敏感。证明了本算法具有较高的安全性。

关键词: 混沌加密, Logistic映射, 正弦迭代映射, 图像加密