SAFE: A Secure Area of Interests Filter for P2P-based MMOGs

Area of interests (AOI) filter plays a vital role in reducing the network traffic in peer-to-peer (P2P) based massively multiplayer online games (MMOGs). However, not every peer in the system can be completely trusted. Secret information, such as players' positions are vulnerable to be disclosed in traditional AOI filtering and such cheating is hard to detect. We propose a protocol, called SAFE, based on secure computation theory, which is able to keep private data from unauthorized players who may cheat. The proposed SAFE protocol can also be easily implemented based on the existing P2P infrastructure.