Abstract: User and digital certification management plays an important role in the information grid system. It is the foundation of the authority management and security service invocation of grids and gives the basic support for grid portal and high level business process. In this paper,we put forward a framework for user management in forestry grid which coued support two-dimension role management,digital certification management and security service call. User and digital management module for digital forestry grid has been implemented based on the framework,and it will offer very good support for user authentication and workflow in forestry grid.

Key words: forestry grid, user management, digital certification