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INDOCRYPT
2004
Springer

Revisiting Fully Distributed Proxy Signature Schemes

10 years 1 months ago
Revisiting Fully Distributed Proxy Signature Schemes
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 [2, 8]. 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 [4]. In this work, we extend the security definitions introduced in [2] to the scenario of fully distributed proxy signature schemes, and we propose a specific scheme which is secure in this new model.
Javier Herranz, Germán Sáez
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where INDOCRYPT
Authors Javier Herranz, Germán Sáez
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