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Revisiting fully distributed proxy signature schemes
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Abstract: | In a proxy signature scheme, a potential signer delegates his capabilities to a proxy signer, who can sign documents on behalf of him. The recipient of the signature verifies both identities: that of the delegator and that of the proxy signer. There are many proposals of proxy signature schemes, but security of them has not been considered in a formal way until the appearance of the work by Boldyreva et al. If the entities which take part in a proxy signature scheme are formed by sets of participants, then we refer to it as a fully distributed proxy signature scheme. In this work, we extend the security definitions introduced by Boldyreva et al. to the scenario of fully distributed proxy signature schemes, and we propose a specific scheme which is secure in this new model. |
BibTeX
@misc{eprint-2003-11910, title={Revisiting fully distributed proxy signature schemes}, booktitle={IACR Eprint archive}, keywords={public-key cryptography / proxy signatures, distributed cryptography, security proofs}, url={http://eprint.iacr.org/2003/197}, note={ jherranz@mat.upc.es 12319 received 24 Sep 2003}, author={Javier Herranz and German Saez}, year=2003 }