Team Cascade

Overall Objectives
Scientific Foundations
Application Domains
New Results
Contracts and Grants with Industry
Other Grants and Activities

Section: New Results

New Primitives (Key Exchange)

Participants : Michel Ferreira Abdalla, Céline Chevalier, David Pointcheval.

These two papers propose new schemes that allow key generation, with password authentication of the players. The main goal of password-based cryptography is to guarantee that the on-line dictionary attack is the best attack: each on-line active interaction just allows the adversary to test one password.

These two papers present tools to be used for efficient key exchange protocols: the former leads to the first efficient password-based key exchange protocol secure against adaptive adversaries in the UC framework, in the standard model. The latter explains that if one truncates the representation of a random group element (in a finite field or an elliptic curve), this leads to a random bit string.


Logo Inria