一种基于混沌的图像加密算法

An algorithm of image encryption based on chaos

为克服混沌信号在数字系统下的短周期效应及隐藏其特有的动力学特征,本文提出了一种基于扰乱混沌序列原始顺利的流密码加密方法。并在MATLAB下进行了仿真研究。结果显示,该算法的密钥流序列不仅保留了Logistic混沌信号原有的类噪声特性,更加大了破解的算法复杂度,并成功隐藏了混沌信号在相空间所特有的吸引子结构。

In this paper, a new stream cipher is proposed what is based on disordering the old order anti structure of the chaotic sequence. This method not only can hide the dynamical characters of chaos but also can solve the short cycle effect. Simulation results show that the key stream which is generated by this method has the better randomness.