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S. R. Tate and R. Vishwanathan.
"General Secure Function
Evaluation Using Standard Trusted Computing Hardware,"
Proceedings of the 9th Annual Conference on Privacy, Security,
and Trust (PST), 2011, pp. 221--228.
In this paper, we show how Trusted Platform
Modules (TPMs), standard security hardware devices, can be
used with minor modification to efficiently support Secure Function
Evaluation (SFE), a fundamental and extremely powerful
cryptographic operation. Prior research by others has shown
how SFE can benefit from using security hardware, but prior
work has used either custom hardware tokens or powerful
secure co-processors which require significant changes to current
computing systems. In this paper we show that similar techniques
can be supported by TPMs with enhancements that are at the
level of a firmware upgrade (albeit a secure firmware upgrade
endorsed by the TPM manufacturer) — specifically, no new
physical devices would need to be purchased or added to most
modern business-class systems. This paper describes the specific
changes that need to be made, and evaluates efficiency for a
simple example in location-based privacy. Our evaluation shows
that performance is reasonable for supporting simple privacyenhanced