Building Foundation for CPS Security Risk Evaluation based on Continuous State-Space Model

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K21272
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 1001:Information science, computer engineering, and related fields
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Sasahara Hampei 東京工業大学, 工学院, 助教 (50954608)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: CPSセキュリティ / リスク評価 / 制御理論

Outline of Final Research Achievements

In this project, we conducted the construction of a security risk assessment framework for CPS (Cyber-Physical Systems). Focusing on the characteristic of CPS where system behavior adheres to physical laws, we developed an efficient risk assessment algorithm based on state-space models. Additionally, we implemented the development of an evaluation platform for microgrids for practical applications. Furthermore, we developed an attack detection method using reservoir computing. We proposed real-time fast retraining under uncertain generation of distributed power sources, confirming that it achieves nearly equivalent performance to conventional methods while accelerating learning speed by approximately 100 times.

Free Research Field

制御理論

Academic Significance and Societal Importance of the Research Achievements

本研究ではCPS (Cyber-Physical-System)のセキュリティリスク評価基盤の構築に成功した。CPSでは既存の機密性，完全性，可用性に加えて実空間における物理的安全性による評価が求められるため、物理現象を陽に考慮する新たな評価手法が必要であるが、体系的かつ汎用的な方法論はこれまで提案されていなかった。本研究は各種防御技術の有効性を検証するための基礎として貢献でき、さらに，リスク評価とセキュリティ向上を繰り返すCPSセキュリティマネジメント（PDCAサイクル）の促進に繋がることが期待される。