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Article

MiniTEE—A Lightweight TrustZone-Assisted TEE for Real-Time Systems

by 1,2, 2, 3,* and 1
1
College of Computer Science and Engineering, Northeastern University, Shenyang 110819, China
2
Department of Computing, The Hong Kong Polytechnic University, Hong Kong 999077, China
3
Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816-2362, USA
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(7), 1130; https://doi.org/10.3390/electronics9071130
Received: 31 May 2020 / Revised: 21 June 2020 / Accepted: 8 July 2020 / Published: 11 July 2020
(This article belongs to the Special Issue Applications of Embedded Systems)
While trusted execution environments (TEEs) provide industry standard security and isolation, TEE requests through secure monitor calls (SMCs) attribute to large time overhead and weakened temporal predictability. Moreover, as current available TEE solutions are designed for Linux and/or Android initially, it will encounter many constraints (e.g., driver libraries incompatible, large memory footprint, etc.) when integrating with low-end Real-Time Operating Systems, RTOSs. In this paper, we present MiniTEE to understand, evaluate and discuss the benefits and limitations when integrating TrustZone-assisted TEEs with RTOSs. We demonstrate how MiniTEE can be adequately exploited for meeting the real-time needs, while presenting a low performance overhead to the rich OSs (i.e., low-end RTOSs). View Full-Text
Keywords: real-time system; ARM TrustZone; trusted execution environment real-time system; ARM TrustZone; trusted execution environment
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MDPI and ACS Style

Liu, S.; Guan, N.; Guo, Z.; Yi, W. MiniTEE—A Lightweight TrustZone-Assisted TEE for Real-Time Systems. Electronics 2020, 9, 1130. https://doi.org/10.3390/electronics9071130

AMA Style

Liu S, Guan N, Guo Z, Yi W. MiniTEE—A Lightweight TrustZone-Assisted TEE for Real-Time Systems. Electronics. 2020; 9(7):1130. https://doi.org/10.3390/electronics9071130

Chicago/Turabian Style

Liu, Songran, Nan Guan, Zhishan Guo, and Wang Yi. 2020. "MiniTEE—A Lightweight TrustZone-Assisted TEE for Real-Time Systems" Electronics 9, no. 7: 1130. https://doi.org/10.3390/electronics9071130

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