Chaotic Secure Communication Of Digital Images Based On The SOPC Technology

With Internet technology and multimedia technology rapid development. A lot of sensitive image information through public communications facilities or start computer network to exchange. In recent years, Image encryption technology has become an important branch of cryptography. The traditional image encryption technology is a kind of based on pixel scrambling encryption algorithm. The system's security depends on the algorithm of confidentiality, Algorithm nondisclosure, don't meet modern cryptography system.Meanwhile, Voice and video encryption problem has caused the researchers enormous attention. The traditional encryption algorithms such as DES, Blowfish, RSA, etc, in theory can be used in digital video encryption, but the above method video file was not considered to its own characteristics. This will lead to file structure was damaged, and because the video files liquor characteristics, the above algorithms encrypted rate can't guaranteed. So the new high security and encryption speed video encryption algorithm is very necessary.In this paper, first in digital image encryption are studied, Using three-dimensional Chua's eight vortex volumes of chaotic systems driven type response to design a digital image encryption synchronization scheme. This also is in the present study the most chaotic confidential synchronous solution. Use Matlab simulation software. Finally, through subtle changes in the parameters of chaotic system to verify the safety performance of encryption scheme.In digital image simulation experiment after obtained through, further consideration, digital video are in chaos encryption processing research. According to the characteristics of video files of AVI, Using traditional video encryption algorithm for the video encryption algorithm completely video files to collect chaos encryption processing, and analyzes the confidentiality of the encryption system features.In the fourth and fifth chapter, mainly based on FPGA mentioned the SOPC embedded Ethernet transmission digital image chaotic secure communication solutions. Rarely have to chaos encryption system hardware to achieve with the case. In chaos encryption algorithm, Firstly, the Euler algorithm and variable scale expansion transform, for continuous-time chaotic system of discretized. In embedded Linux operating system, with six roll Jerk system for example, FPGA to produce as encryption and decryption chaotic digital sequence. In system design and hardware realization, according to the principle of driving reactive synchronization, in Xilinx Virtex-ⅡPro's FPGA development platform, through the embedded Ethernet transmission, realize the static image with color chaotic secure communication. In the Linux operating system simulation. then it analyses the encrypted classified performance. Through the show photo shoot, further analysis this scheme the safety performance.