摘要
文章基于指数性混沌序列来产生两个密钥序列,然后分别把它们映射到区间(但不改变混沌特性),进而应用这两个密钥序列所组成的矩阵作为加密模板设计加密算法,并把加密算法应用于灰度图像数据加密。分析表明,该文所设计的加密算法不但能抵抗唯密文攻击,而且能有效地抵抗选择明文攻击。仿真结果表明,该算法具有良好的密码学特性。
In this paper,two secret-key sequences are generated based on an exponential chaotic sequence respectively.Via a mapping(but do not change the chaotic attribute),they are mapped into interval and two encryption templates are composed.Then using the encryption templates,an encryption algorithm is presented and used to encrypt a gray scale image.The analysis indicates that the encryption algorithm not only can effectively resist cipher-text-only attack but also chosen-plaintext attack.The simulation results imply that the algorithm can meet the requests in cryptography.
出处
《计算机工程与应用》
CSCD
北大核心
2002年第8期16-17,25,共3页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(编号:69874025)
