摘要
利用已有复合离散混沌动力系统在不变分布和迭代轨迹的若干性质,以Logsitic映射产生的离散混沌序列的伪随机性作为基础,选择迭代函数产生新的离散混沌序列值,设计了图像加密算法。最后讨论了算法的安全性,经实验证明此算法使得加密图像具有很高的保密效果。
This paper utilized some characteristics on invariant distribution density and iteration track of a composite discrete chaotic dynamical system which had been presented. Used the R sequence based on the pseudn-randomness of Logistic-map to select iteration function in composite discrete chaotic dynamical system to get a new chaotic sequence. According to the above, prosented a digital image encryption algorithm. In the end, discussed the security of this algorithm. The result of this experiment shows that the encrypted image has high security.
出处
《计算机应用研究》
CSCD
北大核心
2008年第10期3097-3099,共3页
Application Research of Computers
基金
国家自然科学基金资助项目(60703035)
重庆市自然科学基金资助项目(2006BB2227)
关键词
混沌
复合混沌系统
图像加密
chaotic
composite chaotic system
image encryption
