Anonymous Proxy Signatures - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2008

Anonymous Proxy Signatures

Résumé

We define a general model for consecutive delegations of signing rights with the following properties: The delegatee actually signing and all intermediate delegators remain anonymous. As for group signatures, in case of misuse, a special authority can open signatures to reveal the chain of delegations and the signer's identity. The scheme satisfies a strong notion of non-frameability generalizing the one for dynamic group signatures. We give formal definitions of security and show them to be satisfiable by constructing an instantiation proven secure under general assumptions in the standard model. Our primitive is a proper generalization of both group signatures and proxy signatures and can be regarded as non-frameable dynamic hierarchical group signatures.
Fichier principal
Vignette du fichier
2008_scnA.pdf (228.47 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inria-00419153 , version 1 (22-09-2009)

Identifiants

  • HAL Id : inria-00419153 , version 1

Citer

Georg Fuchsbauer, David Pointcheval. Anonymous Proxy Signatures. SCN '08, 2008, Amalfi, Italie, Italy. pp.201--217. ⟨inria-00419153⟩
685 Consultations
490 Téléchargements

Partager

Gmail Facebook X LinkedIn More