Process-aware side channel monitoring for embedded control system security

David Paul-Pena, Prashanth Krishnamurthy, Ramesh Karri, Farshad Khorrami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cyber-physical systems (CPS) are interconnections of heterogeneous hardware and software components (e.g., sensors, actuators, physical systems/processes, computational nodes and controllers, and communication subsystems). Increasing network connectivity of CPS computational nodes facilitates maintenance and on-demand reprogrammability and reduces operator workload. However, such increasing connectivity also raises the potential for cyber-attacks that attempt unauthorized modifications of run-time parameters or control logic in the computational nodes to hamper process stability or performance. In this paper, we analyze the effectiveness of real-time monitoring using digital and analog side channels. While analog side channels might not typically provide sufficient granularity to observe each iteration of a periodic loop in the code in the CPS device, the temporal averaging inherent to side channel sensory modalities enables observation of persistent changes to the contents of a computational loop through their resulting effect on the level of activity of the device. Changes to code can be detected by observing readings from side channel sensors over a period of time. Experimental studies are performed on an ARM-based single board computer.

Original languageEnglish (US)
Title of host publication25th IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2017 - Proceedings
PublisherIEEE Computer Society
ISBN (Electronic)9781538628805
DOIs
StatePublished - Dec 13 2017
Event25th IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2017 - Abu Dhabi, United Arab Emirates
Duration: Oct 23 2017Oct 25 2017

Publication series

NameIEEE/IFIP International Conference on VLSI and System-on-Chip, VLSI-SoC
ISSN (Print)2324-8432
ISSN (Electronic)2324-8440

Other

Other25th IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2017
CountryUnited Arab Emirates
CityAbu Dhabi
Period10/23/1710/25/17

Keywords

  • Acoustic
  • Control systems
  • Monitoring
  • Security
  • Side channels
  • Thermal

ASJC Scopus subject areas

  • Hardware and Architecture
  • Software
  • Electrical and Electronic Engineering

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