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快速有效的单向Hash函数的设计是现代密码学研究的一个热点.提出了一种基于二维超混沌映射的单向Hash函数的构造方法.该方法将原始输入报文按字节进行线性变换以及混沌映射,在所产生的混沌序列中选值作为二维超混沌映射的初始值,对迭代后所得的超混沌信号经过调制构造单向Hash函数.实验与分析结果表明,这种构造方法实现简单、对初值有高度敏感性、具有很好的单向性、弱碰撞性和保密性能.
A fast and effective one-way Hash function design is a hot research in modern cryptography.This paper proposes a method of constructing a one-way Hash function based on two-dimensional hyperchaos mapping.This method converts the original input message linearly by byte And the chaotic map, the selected chaos sequence is selected as the initial value of the two-dimensional hyperchaotic map, and the hyperchaotic signals obtained after the iteration are modulated to construct a one-way Hash function. The experimental results show that this method is simple , Highly sensitive to the initial value, with good unidirectional, weak collision and confidentiality.