Geological data access security mechanism based on Grid-GIS

In order to provide services of geological information to the public, China Geological Survey constructs China Geology Survey Information Grid (CGSIG). The security and confidence of these geological data are high level, especially of the final data, final maps and final geological maps which relate to the state secret. This paper analyzes the structure of geological map database, the discovering mechanism of geological spatial information, the mechanism of resource management synchronization, combines some related ideals of GSI (Grid Security Infrastructure) of Globus and builds the security mechanism of accessing Grid-GIS geological spatial information. This paper describes the multi-level management of Collaborative Virtual Domain, refers to the authorization mechanism of the Grid-GIS application and proposes the authorization mechanism which is based on U-R, R-P, P-RS, and the three-dimensional authorization mechanism is to ensure security access of Grid-GIS geological spatial information.