Dependable TCB based on the cell broadband engine™ isolation facility

Masana Murase, Hideyuki Tokuda

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

Abstract

A Trusted Computing Base (TCB) such as a Trusted Platform Module (TPM) or a Mobile Trusted Module plays an essential role for security and privacy applications in embedded systems such as cell phones, smart sensors, and actuators. However, existing hardware-based TCBs lack flexibility for function updates, bug fixes, and feature updates. In this paper, we present a dependable TCB on a Cell Broadband Engine™processor by providing a hardware and software hybrid TPM. Unlike prior approaches, we provide three new features: (1) TPM functions are implemented in software running in memory isolated by hardware, (2) our software TPM is launched and establishes a chain of trust from the hardware using a secure boot method, and (3) a new TPM command provides dynamic patching to the running software TPM and secure code overlays for the efficient use of the limited resources. We show the feasibility of this hybrid implementation of the TPM by assessing its performance and security properties.

Original languageEnglish
Title of host publicationProceedings - 17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011
Pages360-370
Number of pages11
DOIs
Publication statusPublished - 2011 Dec 1
Event17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011 - Toyama, Japan
Duration: 2011 Aug 282011 Aug 31

Publication series

NameProceedings - 17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011
Volume1

Other

Other17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011
CountryJapan
CityToyama
Period11/8/2811/8/31

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Networks and Communications
  • Computer Science Applications

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  • Cite this

    Murase, M., & Tokuda, H. (2011). Dependable TCB based on the cell broadband engine™ isolation facility. In Proceedings - 17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011 (pp. 360-370). [6029864] (Proceedings - 17th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications, RTCSA 2011; Vol. 1). https://doi.org/10.1109/RTCSA.2011.45