54 citations · 119 across the 24 of their papers we have counts for
28 papers
Bi-objective Optimization in Role Mining
Jason Crampton, Eduard Eiben, Gregory Gutin +2
Role mining is a technique used to derive a role-based authorization policy from an existing policy. Given a set of users , a set of permissions and a user-permission author…
Valued Authorization Policy Existence Problem: Theory and Experiments
Jason Crampton, Eduard Eiben, Gregory Gutin +2
Recent work has shown that many problems of satisfiability and resiliency in workflows may be viewed as special cases of the authorization policy existence problem (APEP), which re…
Towards Better Understanding of User Authorization Query Problem via Multi-variable Complexity Analysis
Jason Crampton, Gregory Gutin, Diptapriyo Majumdar
User authorization queries in the context of role-based access control have attracted considerable interest in the last 15 years. Such queries are used to determine whether it is p…
Bounded and Approximate Strong Satisfiability in Workflows
Jason Crampton, Gregory Gutin, Diptapriyo Majumdar
There has been a considerable amount of interest in recent years in the problem of workflow satisfiability, which asks whether the existence of constraints in a workflow specificat…
Canonical Completeness in Lattice-Based Languages for Attribute-Based Access Control
Jason Crampton, Conrad Williams
The study of canonically complete attribute-based access control (ABAC) languages is relatively new. A canonically complete language is useful as it is functionally complete and pr…
The Authorization Policy Existence Problem
Pierre Bergé, Jason Crampton, Gregory Gutin +1
Constraints such as separation-of-duty are widely used to specify requirements that supplement basic authorization policies. However, the existence of constraints (and authorizatio…