Specification and Verification of a Context-Based Access Control Framework for Cyber Physical Systems

Cyber Physical Systems (CPS) are complex systems that operate in a dynamic environment where security characteristics of contexts are unique, and uniform access to secure resources anywhere anytime to mobile entities poses daunting challenges. To capture context parameters such as location and time in an access control policy for CPS, the authors propose a Generalized Spatio-Temporal RBAC (GST-RBAC) model. In this model spatial and temporal constraints are defined for role enabling, user-role assignment, role-permission assignment, role activation, separation of duty and role hierarchy.

Provided by: Purdue University Topic: Security Date Added: Jan 2012 Format: PDF

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