Constructing a one-way hash function one-way function based on the unified Chaotic system

• 来源期刊: 中国物理B（英文版）
• 关键词: Hash function unified chaotic system cryptography
• 年，卷（期）: 2008,（10）
• 页码范围: 3588-3595
• 页数: 8页
• 语种: 英文

摘要

A new one-way hash function based on the unified chaotic system is constructed.With different values of a key parameter,the unified chaotic system represents different chaotic systems,based on which the one-way hash function algorithm is constructed with three round operations and an initial vector on an input message.In each round operation,the parameters are processed by three different chaotic systems generated from the unified chaotic system.Feed-forwards are used at the end of each round operation and at the end of each element of the message processing.Meanwhile,in each round operation,parameter-exchanging operations are implemented.Then,the hash value of length 160 bits is obtained from the last six parameters.Simulation and analysis both demonstrate that the algorithm has great flexibility,satisfactory hash performance,weak collision property,and high security.