基于Web的分布式协同软件关键技术研究-计算机技术专业论文.docxVIP

Ab Abstract Title:THE KEY TECHNOLOGIES OF WEB-BASED DISTRIBUTED COLLABORATIVE SOFTWARE Major: Computer Technology Name: Min YAN Signature: Supervisor: Prof. Yinghui WANG Signature: Abstract With the development of information technology, the development and use of collaborative work platform of enterprises to have gradually become a kind of inevitable trend. The author takes a collaborative work platform of coal enterprises which participated in as the research object, researche and implement the three key technologies of access control, electronic signature, system integration. Research work is summarized as follows: (1) For the problem of poor usability in the course of RBAC role authorize, provide an extended access control methods. The traditional RBAC model has many flaws in the actual use of the process, such as the manage of roles and permissions are complex, the work of authorization is heavy, authorization granularity division complex. Especially in a large number of business process-oriented collaborative office software, its shortcomings have become obstacles to system administration. Based on the analysis of the characteristics of the business process-based applications, the RBAC model be improved on the inherited part of the role, and the role of inheritance with constraints method was put forward. this method reduced the security administrator ’s workload of authorize and improved the availability of the model. Finally, this extended access control model is applied to Coal enterprise information platform , and verified the availability of this model. (2) Design and implement an effective solution for electronic signature and stamp. Currently commercially popular electronic signature solution is essentially based on PKI, the process is complex, even more critical is the management system certificate expens ive. Based on access control model, design and implement