In traditional role-based access control (Role Based Access Control, RBAC), proposed the role and user-groups based on access control with context-aware (Role and Group Based Access Control with Context, RGBACC) model. RGBACC can do unified functional management to users, and can dynamically change the user's permission by the information from application environment in the context of access and security-related .This article RGBACC model applied to the actual document access control system, and the system design and implementation of a detailed description.
