基于混沌映射的Hash函数及其在身份认证中的应用

Chaotic-maps-based Hash function and its application in identity certification

提出了新的用于软件版权保护等的用户身份标识加密、隐秘存储与认证的算法。首先给出了一个分段线性混沌映射,并构造了其复合函数,进而分析了它们的统计特性;为实现身份标识加密,构建了基于混沌映射的Hash函数,并在此基础上进一步构造了生成隐含身份标识的认证证书的Hash函数。试验结果表明,该算法准确、安全、高效、实用。

An algorithm used for user identity identifier （UID） encryption, secret storage, and authentication etc. was proposed. Firstly, a piecewise-linear chaotic map and its composite function were presented, and their statistic characteristics were also analyzed. Secondly, a Hash function based on chaotic map was constructed so as to encrypt UID. Based on the first function, some other Hash functions were then constructed to generate certification in which the UID was hidden. The experiment results show that the proposed algorithms are exact, security, efficient, and practical for information encryption and identity certification.