It is difficult for an eavesdropper to extract information about chaotic systems for every bit of pseudo-random number generator is generated from three different chaotic orbits.

因为伪随机数发生器的每一位是由三个不同的混沌轨道产生的，所以对攻击者来说，提取混沌系统信息是非常难的。

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Then a chaotic stream cipher based on the pseudo-random number generator is designed, which has high security, low cost and easy realization proved by some experiments.

接着我们设计一种基于该伪随机数产生器的流密码。实验结果证明，该流密码具有安全性高、代价低和实现特性好的特点。

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