Paper 2003/197
Revisiting fully distributed proxy signature schemes
Javier Herranz and German Saez
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.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- proxy signaturesdistributed cryptographysecurity proofs
- Contact author(s)
- jherranz @ mat upc es
- History
- 2003-09-24: received
- Short URL
- https://ia.cr/2003/197
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2003/197,
author = {Javier Herranz and German Saez},
title = {Revisiting fully distributed proxy signature schemes},
howpublished = {Cryptology {ePrint} Archive, Paper 2003/197},
year = {2003},
url = {https://eprint.iacr.org/2003/197}
}
