Access Right assignment Method which Based on Margin of Hierarchical Security Level

摘要

For the research of assigning totally ordered security levels, the SLA (Security Level Assign- ment) algorithm was proposed from graph theoretic approach. In the SLA algorithm, pro- cessing requirement to flow data and confidentiality requirement to inhibit data flow , among entities, are firstly expressed in two independent graphs. Then, two graphs are mixed to an integrated requirement graph. By analyzing the integrated requirement graph, design capa- bility is evaluated, and security levels are assigned to entities.