Security Mechanism Research And Design For PDA Wireless Access

PDA is the development direction of computer miniaturization, especially, PDA wireless access system has broad space for development. Meanwhile, the study for wireless access security mechanism of PDA is also the important basic research subject. Especially, it has important application value for some higher requirements for security industry.Researchers not only have put forward a series of PDA wireless access technology, but also done a lot of research for its security mechanism at home and abroad since 1993. The studies for wireless access security were done earlier at abroad, and in a large number of security levels higher have found wide applications in the industry. But it was relatively backward in domestic, and basic belongs to the follow-up study. At the same time, this paper introduces the principle of PDA wireless access, from the PDA wireless access system architecture analysis shows the core of this system lies in the choice of wireless access technology. And adapt to the wireless access technology, such as satellite mobile communication system, wireless local area network(LAN) and cellular mobile communication, each have each advantages, also each have each disadvantage, some relatively advanced technology, some technology is backward, this article reviews the various common wireless access technology in turn security and universality.Two kinds of safety standards(CC and GB17859) were introduced in this paper, and the relationship between these two kinds of safety standards was discussed, put forward the suitable for PDA wireless access security framework. And then presents the specific application scenario for the description and analysis, from the security, technology, business, investment and so on. The security requirements definition conforming to the security framework and a particular scenario of the PDA wireless access system was also deduced, and the components about the specific safety function demands and security were defined. In addition, from the perspective of business, technology and safety three feasibility analyses, it was considered that WIFI technology was more appropriate than others. According to the actual needs of the business, analyzes the requirements of the various user roles and operation process, sort out the specific 15 business requirements.In this paper, the research on PDA wireless access stems from zhangjiajie intelligent station project, according to the actual needs of the business, the planning and design of the system’s overall framework of PDA wireless access system, and completed the PDA application software function design, interface design, documentation, software structure design and main function module design. Then follow the security framework, will need to implement the system of classification for the third level: safety mark protection level, and completed the whole security system design, security mechanism and security networks.Then, this paper illustrates the specific implementation work including PDA application software and the realization of security mechanism. The relationship between the interface and the business module/class/components was described from the mobile radio module, and the corresponding code was given. At the same time, it is mainly described that the PDA wireless access system based on WIFI network security mechanism and security architecture and security equipment type selection in the realization of security mechanism, and the system of business security and system security functions was expounded, listing in order to meet the EAL4 security level has taken all kinds of work.Finally, the paper describes the black-box functional testing for the results of PDA wireless access, and through the analysis of the test results, we can know that the test results meet the requirements. Then, the paper gives a systematic review by business and security.