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

Composable symbolic security definitions

 Dominique Unruh
Tuesday, June 29 2010 at 11:00AM
Salle de Conférence (Pavillon des Jardins)
Dominique Unruh (Saarland University)

The definition of Universal Composability (UC; Canetti, FOCS 2001) is a cryptographic security definition that is both simple and gives very strong security guarantees. In particular, it ensures that the composition of secure protocols stays secure. The idea of UC is not, however, restricted to the cryptographic (computational) setting; instead, one can see it as a refinement relation on protocols and programs that preserves security and is composable. We show how UC can be applied in a symbolic security setting. We also show a new design technique (virtual primitives). This design technique allows to circumvent, in a symbolic UC setting, various impossibility results that apply in the cryptographic setting.

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