Limits on Revocation in VANETs

The authors examine the limitations on revocation approaches in VANETs, including local revocation and global revocation. Local revocation schemes often use a local vote to identify and revoke an attacker. However, such votes often require that not only a majority of local nodes are honest, but that they also are able to detect the attack. They argue that these requirements may not be practical, particularly in the early stage of VANET deployment. Another local revocation approach, RevoGame, uses game theory to mitigate misbehavior in the VANET; however, they argue RevoGame does not correctly identify the players in the revocation game.