LSV Seminar

The LSV seminar takes place on Tuesday at 11:00 AM. The usual location is the conference room at Pavillon des Jardins (venue). If you wish to be informed by e-mail about upcoming seminars, please contact Stéphane Le Roux and Matthias Fuegger.

The seminar is open to public and does not require any form of registration.

Past Seminars

Anonymous Authentication in Cryptographic Protocols

Thursday, April 12 2012 at 02:00PM
Salle de Conférence (Pavillon des Jardins)
Malika Izabachene (LSV, ENS Cachan)

Anonymity arises in several contexts, in e-voting systems, e-payment transactions, location-based services, and more generally in situations where an identity service provides some authorization to users.

In this talk, I will give a few illustrations of some technical issues for anonymous authentication in both the interactive and non-interactive settings. As a first step, I will review security notions and constructions for anonymous encryption schemes and will propose applications to provable-secure password-based key-exchange protocols.

I will then introduce anonymous credentials, which are signatures enabling users to authenticate later on to some service provider without revealing any information about them. I will finally present an efficient provable-secure e-cash system as one of its many applications.

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