Cryptology ePrint Archive: Report 2002/151

Selective disclosure credential sets

Jason E. Holt and Kent E. Seamons

Abstract: We describe a credential system similar to the electronic cash system described by Chaum, Fiat and Naor. Our system uses bit commitments to create selective disclosure credentials which limit what portions of a credential the holder must reveal. We show how credentials from separate issuers can be linked to the same person in order to prevent users from pooling credentials to obtain services no one user could obtain alone. We also describe how to use a blinding technique described by Laurie which may not violate the patents on blind signatures.

Category / Keywords: public-key cryptography / digital credentials, selective disclosure, credential pooling, blind signatures

Date: received 3 Oct 2002, last revised 6 Nov 2002

Contact author: iacr_eprint at lunkwill org

Available format(s): PDF | BibTeX Citation

Note: Updates to many sections, rewritten abstract.

Version: 20021107:063541 (All versions of this report)

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