WEI Peng-cheng1, ZHANG Wei 1, 2, et al. Design keyed Hash function based on couple chaotic system[J]. 2006, (9): 27-33.DOI:
基于双混沌系统的带秘密密钥散列函数构造
摘要
在对逐段非线性映射详细分析的基础上
提出一种用逐段非线性映射构造基于扰动的双混沌数字系统方法
然后建立一个基于双混沌系统的带秘密密钥的散列算法
算法以迭代初始点作为秘密密钥
以粗粒化的迭代轨迹作为其散列值。实验结果表明
这种算法具有对初值有高度敏感性、很好的单向性、弱碰撞性
较基于单一混沌映射的散列函数具有更强的保密性能
且实现简单。
Abstract
Analyzed the chaotic and cryptographic properties of a piecewise nonlinear map
a couple chaotic digital sys-tem was proposed based on perturbing which used the piecewise nonlinear
then a new approach to construct keyed Hash function was presented. The approach used the initial value of the couple chaotic system as the secret key and the coarse-graining trajectory as Hash values. Simulation results show that the chaotic keyed Hash function based on the couple chaotic system has good one-way