Research On Application Of Access Control Model In Tax Administration

With the rapid development of network technology and Internet continued to increase, as well as functions of E-government applications which further brought concerns on safety issues such as access authorization and data security. The massive information of government, enterprises and individuals stored on the database backbone of electronic government which is prone to leakage and corruption are of crucial importance to the success of the development of e-government.Access control technology is one of the five standard security services defined by ISO which is vital to ensure information security of information systems including electronic government systems. Access Control for the system to prevent illegal access to information, modification and destruction, as well as prevent unauthorized use of the system was playing an important role. More specifically, for the E-government system, traditional access control techniques no longer satisfy the rising requirements of E-government in many aspects due to massive number of users and huge volume of information resource. Therefore, Access control policy of effective user not only greatly reduce the workload, increase efficiency and reduce errors, but also to ensure that E-government information systems and services, the confidentiality, integrity and availability.This paper focuses on the application and implementation of access control in an application system. Based on research and analysis of the T-RBAC model which is character and task oriented. The realization of the T-RBAC model in tax collection and administration information system and to achieve from both theoretical and practical point of view of the T-RBAC model has been studied. A comparative and extensive study on the traditional access control model, the RBAC model and the TBAC model is also presented pointing out the drawbacks of each model in real-life applications, given a TBAC and RBAC combination of access control model -T-RBAC model. Then,according to the requirement analysis of the access control of tax collection environment, given the model of the basic elements of the relationship, and a choice to meet the Environmental taxation of T-RBAC model used in practical applications, which includes registration, tax payer administration, application and collection, receipt and certification management, and tax accounting, an appropriate T-RBAC model is selected to be implemented to properly handle the above tasks. This paper proposed by the design and implementation of programs for E-government systems and other information systems designed to control access, especially for enterprise information systems access control design also has some reference value.