Research The Technology Of Access Control For E-Government

With the development of the computer technology and network technology, the E-government affairs rapidly obtain the widespread application in many countries. However, from the network, inner departments'security threats seriously restricting the development of E-government. Access control is an important component of network security, in the protection of information integrity, confidentiality and availability of E-government plays an important role. However, along as the hugeness of E-government, traditional access control strategies have low efficient and make mistakes easy, at the same time, the characteristics of E-government determined that traditional access control models can't meet the special requirements. Therefore, the study of small granularity based on the access control has a certain theoretical and practical significance.According to the characteristics of government department, this paper extends authorization of RBAC through users and roles are assigned to related departments, authorization based on roles and departments., and proposes a new extended model named E-RBAC which can more suitable for e-government environment.At the same time, this paper establishes an interoperation model based on E-RBAC using role mapping policy and gives unified authority strategies to solve the application systems of e-government integration and cross-domain interoperation.In the process of design and implement of Hubei province unified permission system, we deploys E-RBAC and extend models for designing, and through web services components and mapping strategies provided by platform we achieve multi application system's integration and cross-domain interoperation. The test of system's performance certificates the application feasibility of system.