SobTrA: A software-based trust anchor for ARM cortex application processors

Julian Horsch, Sascha Wessel, Frederic Stumpf, Claudia Eckert

Publikation: KonferenzbeitragPapierBegutachtung

7 Zitate (Scopus)

Abstract

In this paper, we present SobTrA, a Software-based Trust Anchor for ARM Cortex-A processors to protect systems against software-based attacks. SobTrA enables the implementation of a software-based secure boot controlled by a third party independent from the manufacturer. Compared to hardware-based trust anchors, our concept provides some other advantages like being updateable and also usable on legacy hardware. The presented software-based trust anchor involves a trusted third party device, the verifler, locally connected to the untrusted device, e.g., via the microSD card slot of a smartphone. The verifler is verifying the integrity of the untrusted device by making sure that a piece of code is executed untampered on it using a timing-based approach. This code can then act as an anchor for a chain of trust similar to a hardware-based secure boot. Tests on our prototype showed that tampered and untampered execution of SobTrA can be clearly and reliably distinguished.

OriginalspracheEnglisch
Seiten273-280
Seitenumfang8
DOIs
PublikationsstatusVeröffentlicht - 2014
Extern publiziertJa
Veranstaltung4th ACM Conference on Data and Application Security and Privacy, CODASPY 2014 - San Antonio, TX, USA/Vereinigte Staaten
Dauer: 3 März 20145 März 2014

Konferenz

Konferenz4th ACM Conference on Data and Application Security and Privacy, CODASPY 2014
Land/GebietUSA/Vereinigte Staaten
OrtSan Antonio, TX
Zeitraum3/03/145/03/14

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