计算机应用

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基于混沌的混合图元加密算法研究

朱贵良 马友   

  1. 华北水利水电学院信息工程学院 华北水利水电学院信息工程学院
  • 收稿日期:2007-08-10 修回日期:2007-10-25 发布日期:2008-01-01 出版日期:2008-01-01
  • 通讯作者: 朱贵良

Research of mixed image element encryption algorithm based on chaotic system

<a href="http://www.joca.cn/EN/article/advancedSearchResult.do?searchSQL=((([Author]) AND 1[Journal]) AND year[Order])" target="_blank"></a> <a href="http://www.joca.cn/EN/article/advancedSearchResult.do?searchSQL=((([Author]) AND 1[Journal]) AND year[Order])" target="_blank"></a>   

  • Received:2007-08-10 Revised:2007-10-25 Online:2008-01-01 Published:2008-01-01

摘要: 在研究块图元、混合图元和复合图元的基础上,提出了一种基于混沌的混合图元加密算法。详细给出了网络平台下的信息交互收(Bob)发(Alice)双方的加解密步骤,并进行了安全性验证。该算法避免了因计算机有限精度而引起的混沌系统特性退化问题,大幅度提高了抵御已知明文攻击的能力,可有效保证网络平台下的信息交互安全。

关键词: 块图元, 混合图元, 复合图元, 整数化, 复合混沌系统, 图像加密

Abstract: On the basis of the definition of block image element, mixed image element and composite image element, this paper proposed a mixed image element encryption algorithm based on chaotic system. This paper offered the steps of information exchange between the recipient (Bob) and the sender (Alice) in detail and verified the security of the algorithm. The algorithm can avoid the degeneration problem of chaotic system character that was aroused by computer finite precision and effectively improve the ability of withstanding known-plaintext attack. This algorithm can effectively ensure the security of the information exchange on the platform.

Key words: block image element, mixed image element, composite image element, integer, composite chaotic system, image encryption