混沌量化算法研究及测试分析

Research on chaotic quantization algorithm and test analysis

对在信息安全应用中的各种混沌伪随机序列的产生方法进行了研究,对各种典型的一维混沌量化算法的性能进行了随机性测试分析和比较。试验结果显示,被大量采用的二值量化算法以及多次粗粒化算法均存在一些安全缺陷,因此提出了若干改进混沌量化算法,为混沌在信息安全中的应用提供了指导。

This paper described the theory of generating pseudo-random sequence based on the chaotic map in the application of information security,and the performances of some typical quantization methods in one-dimensional chaotic systems were analyzed.The analysis and experimental results demonstrate that some kinds of methods,which were frequently used have some security flaws.So this paper can give some help for the use of chaotic system in the application of information security.Finally,some suggestions for improving chaotic quantization algorithm are proposed in the end.