摘要
基于混沌映射的图像加密是目前应用比较广泛的算法。但是单独应用混沌映射进行加密的安全性不高,需要融合其它算法。基于S盒的图像加密算法通常都是静态的S盒,具有灵活性差,且容易受到攻击等特点。本文提出用Arnold cat映射来构造动态S盒,与混沌映射结合对图像进行分块加密。通过实验得出,所提算法具有密钥空间大,能够抵抗穷举攻击,差分攻击等,且加密效率高,在实际加密过程中易于实现,是一种有效的图像加密方法。
Image encryption based on chaotic mapping is a widely used algorithm.However,the use of chaotic maps alone for security is not high,the need to integrate other algorithms.S-box-based image encryption algorithms are usually static S-box,with poor flexibility,and vulnerable to attack and so on.In this paper,the Arnold cat mapping is used to construct the dynamic S-box,and the image is encrypted in combination with the chaotic map.Experiments show that the proposed algorithm has the advantages of large key space,can resist exhaustive attacks,differential attacks,and so on,and the encryption efficiency is high,which is easy to be realized in the actual encryption process.It is an effective image encryption method.
作者
张健
陈楠楠
李妍
ZHANG Jian;CHEN Nan-nan;LI Yan(Northeast Forestry University,Harbin 150040,China)
出处
《中国电子科学研究院学报》
北大核心
2019年第11期1129-1135,共7页
Journal of China Academy of Electronics and Information Technology
基金
哈尔滨市科技创新人才研究专项资金(2017RAQXJ098)
中央引导地方科技发展专项(ZY18C01)
中央高校基本科研业务费专项资金资助(2572017CB35)
关键词
图像加密
混沌
信息安全
S盒
Image encryption
Chaotic map
Information security
S-boxes
