Temporal Role Access Control Model for New Power Systems Based on Trust Degree

Abstract

With the continuous development of information construction in the new power system and the power information network system, users have their own role identities in the corresponding business systems, and access permissions change over time. Traditional access control permanently assigns user roles, which has made the issue of power information security increasingly prominent. This article introduces time constraints in the role-based access control of the new power system. Building on the research of GTRBAC, a trust-based time-constrained role-based access control model for the new power system is proposed. The model’s semantics, execution model, and formal verification are defined.