Multidimensional Space Access Control Model

Role-based access control (RBAC) model is the most widely used access control model in software, but for today's software are becoming more and more mobility, intelligent, distributed and complexity features, RBAC model show its low capability in formalize environment, context factors. To solve the issues above, this paper proposed a Multidimensional Space Access Control (MDSAC) Model, which puts every factor (role, permission, object, environment, context......) into multiple space dimensions. MDSAC formalize access control politics though coloring (black and white) those space dimensions, on behalf of white representing "Allowed" and black representing "Refused". MDSAC model can also greatly strengthen its description ability by space dimensional expansion.