Scheduling execution of credentials in constrained secure environments

Authors:
Jan-Erik Ekberg;N. Asokan;Kari Kostiainen;Aarne Rantala
Affiliations:
Nokia Research Center, Helsinki, Finland;Nokia Research Center, Helsinki, Finland;Nokia Research Center, Helsinki, Finland;Technical Research Center, Finland, Helsinki, Finland
Venue:
Proceedings of the 3rd ACM workshop on Scalable trusted computing
Year:
2008

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Abstract

A new inexpensive approach for using credentials in a secure manner has become available due to the fact that several types of general-purpose secure hardware, like TPMs, Mshield and ARM TrustZone are becoming widely deployed. These technologies still have limitations, one being the limited on-chip secure memory which leads to severe size constraints for credentials that need to execute in secure memories. In this paper, we describe, in the context of a credential provisioning and execution architecture we call On-board Credentials (ObC), a secure scheduling mechanism for overcoming some of the size constraints imposed for the virtual credentials implemented on ObC.