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中文摘要：
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。
英文摘要：
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.
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