Digital chaos encryption chip and its application in the network information encryption transmission

Abstract

Chaos system is a complicated nonlinear dynamic system .Chaos system which has good Pseudo random property, orbital unpredictability, extremely sensitive characteristics for initial state and the control parameters makes chaos secure communication and chaotic information encryption become a important research subject in recent years, furthermore digital encryption system design based on chaos is more suitable for the need of encryption system and secure communication system currently. Review the initial stage of digital chaos encryption system studied in 1989 to 1996, there are some papers on digital chaos encryption during these periods, however, through analyzing chaotic system digitized , people found that security flaws of the digital chaotic encryption system that is the degradation of the digital chaotic encryption system, because of all algorithms are operated within precision limits in digital encryption algorithm, so chaotic sequence that is generated by iteration is not chaotic system orbit theoretically, and also not completely have chaotic characteristics , added the result of approximation, the chaotic sequence will finally evolve into a sequence with cycle making encryption algorithm may be cracked based chaos theory design. But the initial value sensitivity and the huge initial key space provided by digital chaotic system could not still be substituted by traditional digital encryption algorithm, moreover digital chaos sequence still have many original basic characteristics of chaotic system; if we can ?improve the accuracy of digital chaos under the impact of limited precision. Digital chaotic encryption domain still has prospects of research and development. So people had been studying and improving the degradation of the digital chaotic system characteristics from 1997 to now. This paper studies digital chaos characteristics and also points out main problems that need to be solved about digital chaos system based on digital chaos system platform built at present, meanwhile conducts in-depth study about short periodicity and correlation, proposes improved methods , then designs digital chaos encryption chip and applies it into network information encryption transmission system.

About the Speaker

Key Laboratory of Electronics Engineering College of Heilongjiang Province
College of Electronic engineering
Heilongjiang University, Harbin, China
qunding@yahoo.cn

Expertise: Chaos key sequence generator, Cryptographic algorithm IP core, Encryption chip design, Network Encryption System, detection and analysis of encryption signal, Chaotic secure communication and synchronization and so on.

Degrees: The undergraduate course study, from electronic engineering, Harbin engineering university in 1984; MA, from instrument science and technology, Harbin industrial university in 1997; PHD, from instrument science and technology, Harbin industrial university in 2007.

Currently: Professor of electronic engineering, Heilongjiang university; Doctoral supervisor; dean of electronic engineering; director of key Laboratory of Electronics Engineering in College of Heilongjiang Province; executive director of Heilongjiang instrumentation, Leader of electronic and information engineering key subject in Heilongjiang province.

Professor Qun Ding has been engaged in the research of information hardware encryption technology, chaos cipher and chaotic secure communication, accomplished 12 research projects, participated in 2 State Natural Science Foundation of China projects as principal and 3 provincial projects, obtained 1 provincial science and technology progress prize, obtained and declared 6 patents, published more than 60 academic papers and 30 papers retrieved by SCI, EI, ISTP. As a principal, she is subsidized by state natural sciences foundation “research of chaos sequence cipher encryption chip based FPGA (No.60672011)”, “digital chaotic new model and its application in the information encryption system (No.61072072)”, and Provincial scientific research project “network encryption card based SOC (No.GZ06A101)”. Meanwhile, she has undertook and completed some practical research projects about data encryption system, the video encryption transmission device for customs, data link terminal digital spread spectrum modulation and demodulation technology and so on in recent years. She held the post of executive chairman in “the 4th Asian-pacific region chaos control and synchronization international conference (APWCCS2007)” in 2007, she was the committee member in charge of work in “International chaos fractal theory and practical conference (IWCFTA)” respectively from 2008 to 2010.