Portal de Periódicos da CAPES

A Flexible Software Development and Emulation Framework for ARM TrustZone

2012; Springer Science+Business Media; Linguagem: Inglês

10.1007/978-3-642-32298-3_1

1611-3349

Johannes Winter, Paul Wiegele, Martin Pirker, Ronald Tögl,

Physical Unclonable Functions (PUFs) and Hardware Security

ARM TrustZone is a hardware isolation mechanism to improve software security. Despite its widespread availability in mobile and embedded devices, development of software for it has been hampered by a lack of openly available emulation and development frameworks. In this paper we provide a comprehensive open-source software environment for experiments with ARM TrustZone, based on the foundations of the well known open-source QEMU platform emulator. Our software framework is complemented by a prototype kernel running within a trusted environment. We validate our software environment with an application example featuring a software based Trusted Platform Module hosted in a TrustZone protected runtime environment and an Android operating system accessing it through an high-level, industry-standard Trusted Computing API.