Mutual authentication and group key agreement for low-power mobile devices Authors: Emmanuel Bresson, Olivier Chevassut, Abdeilah Essiari, David Pointcheval Source: Computer communications 27, 2004
Group key agreement protocol Client U Server LLK Key generation algorithm Group Server Setup algorithm sk Remove algorithm Group Server sk Join algorithm
Adversary Advarsary Client U Server Message M SK Known key attack LLK Forward-secrecy
Key generation Secret key=x Public key=y=g x
Setup algorithm
Remove algorithm
Join algorithm
Authentication
Security Result
Improvement