Preemptive Real-Time Scheduling Incorporating Security Constraint for Cyber Physical Systemsopen access
- Authors
- Baek, Hyeongboo; Lee, Jaewoo; Lee, Yongjae; Yoon, Hyunsoo
- Issue Date
- Aug-2016
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- cyber-physical system; security; real-time scheduling; schedulability analysis
- Citation
- IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, v.E99-D, no.8, pp 2121 - 2130
- Pages
- 10
- Journal Title
- IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS
- Volume
- E99-D
- Number
- 8
- Start Page
- 2121
- End Page
- 2130
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/60656
- DOI
- 10.1587/transinf.2015EDP7493
- ISSN
- 0916-8532
1745-1361
- Abstract
- Since many cyber-physical systems (CPSs) manipulate security-sensitive data, enhancing the quality of security in a CPS is a critical and challenging issue in CPS design. Although there has been a large body of research on securing general purpose PCs, directly applying such techniques to a CPS can compromise the real-time property of CPSs since the timely execution of tasks in a CPS typically relies on real-time scheduling. Recognizing this property, previous works have proposed approaches to add a security constraint to the real-time properties to cope with the information leakage problem that can arise between real-time tasks with different security levels. However, conventional works have mainly focused on non-preemptive scheduling and have suggested a very naive approach for preemptive scheduling, which shows limited analytical capability. In this paper, we present a new preemptive fixed-priority scheduling algorithm incorporating a security constraint, called lowest security-level first (LSF) and its strong schedulability analysis to reduce the potential of information leakage. Our simulation results show that LSF schedulability analysis outperforms state-of-the-art FP analysis when the security constraint has reasonable timing penalties.
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Collections - College of Business & Economics > Department of Industrial Security > 1. Journal Articles
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