On a Modular Approach to (Password-)Authenticated Group Key Establishment

Rainer Steinwandt
Florida Atlantic University

Monday, January 22, 2:00PM
Babbio Center, Room 110
Stevens Institute of Technology
 

Abstract


The talk discusses a protocol compiler enabling the derivation of a group key establishment protocol from a given 2-party solution. The compiler can be applied in the context of password-based authentication and does not introduce idealizing assumptions. For a scenario where an existentially unforgeable signature scheme is available, the talk addresses the question of how such a compiler could help in building a group key establishment protocol on a group-theoretic assumption.

Based on joint work with Michel Abdalla, Jens-Matthias Bohli and María Isabel González Vasco.