基于Δ调制反馈离散时间系统的Hash函数研究  

Research of Hash Function Based on Delta-modulated Feedback Discrete Time Systems

作　　者：马维海[1] 王美春[1] 盖如栋[2] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁阜新123000 [2]淮阴工学院计算科学系

出　　处：《通信技术》2007年第11期334-335,338,共3页Communications Technology

基　　金：国家自然科学基金资助项目(编号:60674113)

摘　　要：Δ调制反馈离散时间系统在一定的参数范围内出现混沌运动,其产生的混沌序列具有良好的伪随机性、遍历性和初值敏感性。文中基于该系统建立了一个带秘密密钥的Hash函数算法,算法以迭代初始点作为秘密密钥。实验表明:该方法简单,具有良好的单向散列性能,并能满足一定的安全性要求。A Delta-modulated feedback discrete time system shows chaotic character if its parameters are in certain confined range, and a chaotic sequence produced from the system is of good performance in pseudo-randomness, ergodicity and sensitivity to initial values. In this paper a Keyed Hash function is constructed based on Delta-modulated feedback discrete time systems. The approach uses the initial value of delta-modulated feedback discrete time system iteration as the secret key. The experimental result shows that the method is implemented easily and fast. Therefore, the method has a good hash performance and satisfies security requirements.

关 键 词：数字签名 HASH函数 △调制 混沌 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]