Authors: Jing-jing Wang; Jia-yong Chen; Xiao-yuan Yang
Addresses: Key Laboratory of Network and Information Security of APF, Engineering University of APF, Shanxi Xi'an 710086, China ' Laboratory of Information and Network of APF, Engineering University of APF, Xi'an 710086, China ' Key Laboratory of Network and Information Security of APF, Engineering University of APF, Xi'an 710086, China
Abstract: Because of its own characteristics, chaos has some natural advantages as an important tool in realising the basic principles of cryptography, namely diffusion and confusion, which may generate key sequences with good randomness. However, every coin has two sides. Chaotic sequences still have degeneration problem due to many reasons. Therefore, the reasons of degeneration are first analysed. And one method to improve this problem is also proposed in this paper. A new kind of chaotic key sequence generation system based on n-combination of chaotic mappings is designed furthermore. The simulation results show that, not only can the system generate its own parameters randomly, but also it can generate chaos secret-key sequences, which have the merits of long periodicity, great complexity and strong security, etc.
Keywords: chaos theory; sequence degeneration; secret key sequences; chaotic mappings; randomness; security; secret keys; cryptography.
International Journal of High Performance Computing and Networking, 2016 Vol.9 No.5/6, pp.480 - 488
Available online: 22 Nov 2016 *Full-text access for editors Access for subscribers Purchase this article Comment on this article