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Paper: Efficient Verifiably Encrypted Signature and Partially Blind Signature from Bilinear Pairings

Authors: Fangguo Zhang Reihaneh Safavi-Naini Willy Susilo URL: http://eprint.iacr.org/2004/004 Search ePrint Search Google Verifiably encrypted signatures are used when Alice wants to sign a message for Bob but does not want Bob to possess her signature on the message until a later date. Such signatures are used in optimistic contact signing to provide fair exchange. Partially blind signature schemes are an extension of blind signature schemes that allows a signer to sign a partially blinded message that include pre-agreed information such as expiry date or collateral conditions in unblinded form. These signatures are used in applications such as electronic cash (e-cash) where the signer requires part of the message to be of certain form. In this paper, we propose a new verifiably encrypted signature scheme and a partially blind signature scheme, both based on bilinear pairings. We analyze the security and efficiency of these schemes and show that they are more efficient than the previous schemes of their kinds.
BibTeX
@misc{eprint-2004-11980,
title={Efficient Verifiably Encrypted Signature and Partially Blind Signature from Bilinear Pairings},
booktitle={IACR Eprint archive},
keywords={public-key cryptography / Verifiably encrypted signature, partially blind signature, Bilinear pairings},
url={http://eprint.iacr.org/2004/004},
note={Indocrypt 2003, LNCS 2904, pp. 191-204,  Springer-Verlag. fangguo@uow.edu.au 12475 received 6 Jan 2004, last revised 26 Feb 2004},
author={Fangguo Zhang and Reihaneh Safavi-Naini and Willy Susilo},
year=2004
}