Extending the Brewer-Nash model to a multilevel context
- 1 January 1990
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
It is shown how the Brewer-Nash Chinese wall model can be extended to a policy for handling the aggregation problem in a multilevel context. A lattice-based information flow policy that can be integrated into both the multilevel and Drewer-Nash context is derived. This information flow policy is used to develop a security policy described in terms of labeled subjects accessing labeled objects that will make it possible to construct a system that prevents users from accessing aggregates that they are not cleared to see.Keywords
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