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Lightweight Fine-grained Access Control Mechanism Based on Zero Trust in CPS

Authors:
Nakul Ghate
Shohei Mitani
Hirofumi Ueda

Keywords: Cyber physical systems; zero trust; fine-grained; workload; distributed access control.

Abstract:
The paper explores the trade-off between security and workload when enforcing fine-grained access control in Cyber Physical Systems network. The paper describes a novel approach to select the access control granularity based on dynamic environment conditions by distributing a part of fine-grained application-level policy on a network-level access controller to reduce the workload while ensuring security. Under the desk evaluation, we achieved a workload reduction of over 90% compared to the input policy, with a granularity degrade of just 15%. Although, some mis-control due to denying essential requests can be observed in the distribution-based approach, the presented algorithms are conceptualized to minimize it. The preliminary experimental results show promising improvement in the access control system performance when employing this approach.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2023

Publication date: September 25, 2023

Published in: conference

ISSN: 2162-2116

ISBN: 978-1-68558-092-6

Location: Porto, Portugal

Dates: from September 25, 2023 to September 29, 2023