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Pairings in Trusted Computing

Chen, Liqun; Morrissey, Paul; Smart, Nigel P.
HP Laboratories

HPL-2008-73

Keyword(s): Trusted computing, Direct Anonymous Attestation (DAA), pairing

Abstract: Pairings have now been used for constructive applications in cryptography for around eight years. In that time the range of applications has grown from a relatively narrow one of identity based encryption and signatures, through to more advanced protocols. In addition implementors have realised that pairing protocols once presented can often be greatly simplified or expanded using the mathematical structures of different types of pairings. In this paper we consider another advanced application of pairings, namely to the Direct Anonymous Attestation (DAA) schemes as found in the Trusted Computing Group standards. We show that a recent DAA proposal can be further optimized by transferring the underlying pairing groups from the symmetric to the asymmetric settings. This provides a more efficient and scalable solution than the existing RSA and pairing based DAA schemes.

17 Pages

Additional Publication Information: To be published in The Second International Conference on Pairing Cryptography Proceedings, Sept 1-3, 2008

External Posting Date: June 21, 2008 [Fulltext]. Approved for External Publication
Internal Posting Date: June 21, 2008 [Fulltext]

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