| With the rapid development of the network, especially the Internet, the manufacture enterprise is undergoing a profound revolution and network manufacture getting the chance of fast progressing. However, the problem of information security has become the bottleneck. The main problem is that the important information and secret data on the Internet are hard to avoid undergoing various kinds of passive or active man-made attacking. For example, information leaking, information stealing, data seizing, and computer virus infecting and so on. Furthermore, the increase of wideband operation make it possible for enterprises, governments and manufacture industry to make use of Internet to create their own private network without area restriction. Obviously this kind of network construction scheme is cheap, convenient but the information security problem could not be avoided. In recent years, a set of new theories and concepts about information security and intellectual copyright protection have been proposed by scholars all over the world. In this thesis, the digital watermark theory and technology applied to the field of manufacture industry, and the secure exchange and transmission of manufacture information and the intellectual copyright protection of products are introduced. The main research work is as below:1. Information concealing and digital watermark technology is a new copyright protection measure of digital media. In order to solve the problem of the copyright protection of the network manufacture products, tamper protection of digital products, watermark attacks and the design of integrated watermark system are discussed emphatically, and a series of theories and practical problems are solved. In the thesis, a novel digital watermark algorithm based on SVD (singular value decomposition) is proposed, according to this research work one of national invention patent has been applied successfully. The experimental results showed that the watermarked images obtained by the algorithm has no difference comparing the original images vision, and the algorithm is perfect robust to image processing such as noise, mean value filter, crop, rotation and JPEG compress etc.2. The IPSec protocol system and the cooperative design theory and realization technology of the hardware and software of embedding system of VPN (virtual private network) are analyzed in this thesis. According to the properties of IPSec protocol and the hardware characters supporting network-processing service, embedding hardware architecture of the high-speed VPN gateway and software system based on MPC8250 isdesigned. An encryption/decryption system using DSP to process IPSec security protocol has been applied for one of national invention patent. It can provide a promising software and hardware solution for the resource sharing and information security of network manufacture. Moreover, the system test and data analyzing of the system implemented are presented in the thesis.3. Based on the research and the analysis of relative theories of the two keytechnology--digital watermark technology and VPN technology, in this thesis, thearchitecture of the copyright protection of network products and manufacture information security is put forward. The copyright protection of network products and important manufacture information concealing can be implemented by this architecture, and also it provided secure communication channels to the network manufacture alliance enterprises, so that the secure transmission of data under the open network environments will be assured. The experimental results proved that the system has great performance on security and reliability.4. According to the latest progress and research of network information technology, analyzing the theory and technology of grid computing, combing network manufacture resource sharing with information security application, for the first time, an architecture model of open grid computing orienting manufacture is proposed, and a secure platform of network man...
|
PDF Full Text Request