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Communication Dans Un Congrès Année : 2008

New Anonymity Notions for Identity-Based Encryption

Résumé

Identity-based encryption is a very convenient tool to avoid key management. Recipient-privacy is also a major concern nowadays. To combine both, anonymous identity-based encryption has been proposed. This paper extends this notion to stronger adversaries (the authority itself). We discuss this new notion, together with a new kind of non-malleability with respect to the identity, for several existing schemes. Inter- estingly enough, such a new anonymity property has an independent application to password-authenticated key exchange. We thus come up with a new generic framework for password-authenticated key exchange, and a concrete construction based on pairings.
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Dates et versions

inria-00419152 , version 1 (22-09-2009)

Identifiants

  • HAL Id : inria-00419152 , version 1

Citer

Malika Izabachène, David Pointcheval. New Anonymity Notions for Identity-Based Encryption. SCN '08, 2008, Amalfi, Italie, Italy. pp.375--391. ⟨inria-00419152⟩
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