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In the following subsections, we define the core RiBAC model that extends
traditional RBAC with the notion of interaction permissions. We also provide a
hierarchical version of the model to leverage hierarchical structures for permission
inheritance. It is followed by a constrained RiBAC model.
Depending on the manual network configuration, various objects could exist in the environment which
needs to be accessed by agents. The valid pairs objects (OBS) and operations on them
(OPS) form the object-oriented permissions (OOPRMS). Roles are authorized for
object-oriented permissions that are assigned to them through the object-oriented
permission assignment relation (OOPA).
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