One-way hash function construction based on chaotic map network》.pdfVIP

Chaos, Solitons and Fractals 41 (2009) 2566–2574 Contents lists available at ScienceDirect Chaos, Solitons and Fractals journal homepage: www.else /loc ate/chaos One-way hash function construction based on chaotic map network Huaqian Yang a,b,*, Kwok-Wo Wong b, Xiaofeng Liao c, Yong Wang d, Degang Yang e a Department of Computer Modern Education Technology, Chongqing Education of College, Chongqing 400067, China b Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong c College of Computer Science and Engineering, Chongqing University, Chongqing 400044, China d Key Laboratory of Electronic Commerce and Logistics of Chongqing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China e Department of Mathematics and Computer Science, Chongqing Normal University, Chongqing 400047, China a r t i c l e i n f o a b s t r a c t Article history: A novel chaotic hash algorithm based on a network structure formed by 16 chaotic maps is Accepted 22 September 2008 proposed. The original message is first padded with zeros to make the length a multiple of four. Then it is divided into a number of blocks each contains 4 bytes. In the hashing pro- cess, the blocks are mixed together by the chaotic map network since the initial value and Communicated by Prof. L. Marek-Crnjac the control parameter of each tent map are dynamically determined by the output of its neighbors. To enhance the confusion a