基于混沌映射的散列函数构造及应用  

haotic-maps-based Hash Function and its Application

作　　者：潘彦章[1] 金明录[1] 谷俊嵘[1] 

机构地区：[1]大连理工大学电子与信息工程学院,辽宁大连116024

出　　处：《信息安全与通信保密》2007年第8期1-3,共3页Information Security and Communications Privacy

摘　　要：文中对一个分段线性混沌映射进行构造复合,构建一个基于混沌映射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,基于密码块链模式实现对任意长度的明文序列产生128位的Hash值,一次加密多个字节,减少了混沌迭代次数,提高了加密速度。理论分析和实验结果表明,提出的Hash函数可满足所要求的单向性,初值和密钥敏感性,抗碰撞性和实时性等要求,可以方便、高效、安全的应用于身份认证中。Based on chaotic-mapping and, by reshaping a piece-wise linear chaotic mapping, a new hash algorithm with private key is constructed This algorithm ,by making the iteration initial point the private key and based on the cipher block chain mode encrypts arbitrary length plaintext data to 128-digit hash value, multi-bit one time, thus reducing the chaotic iterating times and raising the encrypting speed. Theoretic analysis and simulation indicate that the proposed hash function could satisfy the requirements for unidirectionality, initial value and key sensitivity, anti-collision, and real-time performance, and could be applied to the identity authentication conveniently, safely and efficiently.

关 键 词：混沌 散列函数 会话密钥 密钥分发中心(KDC) 

分 类 号：TN918[电子电信—通信与信息系统]