A Secure Event Agreement (SEA) protocol for peer-to-peer gamesSecure Event Agreement (Sea) Protocol • March 29th, 2006
Secure updates in a peer-to-peer game where all of the players are untrusted offers a unique challenge. We analyse the NEO protocol [5] which was designed to accomplish the exchange of update information among players in a fair and authenticated manner. We show that of the five forms of cheating it was designed to prevent, it prevents only three. We then propose an improved protocol which we call Se- cure Event Agreement (SEA) which prevents all five types of cheating as well as meeting some additional security crite- ria. We also show that the performance of SEA is at worst equal to NEO and in some cases better.
