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Erschienen in:
2010 | OriginalPaper | Buchkapitel
On the Design and Implementation of an Efficient DAA Scheme
verfasst von : Liqun Chen, Dan Page, Nigel P. Smart
Erschienen in: Smart Card Research and Advanced Application
Verlag: Springer Berlin Heidelberg
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Direct Anonymous Attestation (DAA) is an anonymous digital signature scheme that aims to provide both signer authentication and privacy. One of the properties that makes DAA an attractive choice in practice is the split signer role. In short, a principal signer (a Trusted Platform Module (TPM)) signs messages in collaboration with an assistant signer (the
Host
, a standard computing platform into which the
TPM
is embedded). This split aims to harness the high level of security offered by the
TPM
, and augment it using the high level of computational and storage ability offered by the
Host
. Our contribution in this paper is a modification to an existing pairing-based DAA scheme that significantly improves efficiency, and a comparison with the original RSA-based DAA scheme via a concrete implementation.