Role based access control on MLS systems without kernel changes

Abstract

Role based access control (RBAC) is attracting increasing attention as a security mechanism for both commercial and many military systems. This paper shows how RBAC can be implemented using the mechanisms available on traditional multi-level security systems that implement information fow policies. The construction from MLS to RBAC systems is signifcant because it shows that the enormous investment in MLS systems can be leveraged to produce RBAC systems. The method requires no changes to the existing MLS system kernel and allows implementation of hierarchical RBAC entirely through site confguration options. A single trusted process is used to map privileges of RBAC roles to MLS labels. Access is then mediated by the MLS kernel. Where C is the number of categories and d the depth of the role hierarchy, the number of roles that can be controlled is approximately
(C /d C /2d )d

(, p. )

Links

• ACM

Citation

Kuhn, D.R., 1998. Role based access control on MLS systems without kernel changes, in: Proceedings of the Third ACM Workshop on Role-Based Access Control  - RBAC ’98. Presented at the the third ACM workshop, ACM Press, Fairfax, Virginia, United States, pp. 25–32. https://doi.org/10.1145/286884.286890