Trusted Hart for Mobile RISC-V Security

V. Ushakov, S. Sovio, Q. Qi, V. Nayani, V. Manea, P. Ginzboorg*, J. E. Ekberg

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

Abstract

The majority of mobile devices today are based on Arm architecture that supports the hosting of trusted applications in Trusted Execution Environment (TEE). RISC-V is a relatively new open-source instruction set architecture that was engineered to fit many uses. In one potential RISC-V usage scenario, mobile devices could be based on RISC-V hardware. We consider the implications of porting the mobile security stack on top of a RISC-V system on a chip, identify the gaps in the open-source Keystone framework for building custom TEEs, and propose a security architecture that, among other things, supports the GlobalPlatform TEE API specification for trusted applications. In addition to Keystone enclaves the architecture includes a Trusted Hart - a normal core that runs a trusted operating system and is dedicated for security functions, like control of the device's keystore and the management of secure peripherals. The proposed security architecture for RISC-V platform is verified experimentally using the HiFive Unleashed RISC-V development board.

Original languageEnglish
Title of host publicationProceedings - 2022 IEEE 21st International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2022
PublisherIEEE
Pages1587-1596
Number of pages10
ISBN (Electronic)978-1-6654-9425-0
DOIs
Publication statusPublished - 2022
MoE publication typeA4 Conference publication
EventIEEE International Conference on Trust, Security and Privacy in Computing and Communications - Virtual, Online, China
Duration: 9 Dec 202211 Dec 2022
Conference number: 21

Publication series

NameIEEE International Conference on Trust, Security and Privacy in Computing and Communications
ISSN (Electronic)2324-9013

Conference

ConferenceIEEE International Conference on Trust, Security and Privacy in Computing and Communications
Abbreviated titleTrustCom
Country/TerritoryChina
CityVirtual, Online
Period09/12/202211/12/2022

Keywords

  • enclaves
  • mobile security
  • RISC-V
  • TEE

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