An efficient protocol for peer-to-peer file sharing with mutual anonymity

A fundamental problem in a pure Peer-to-Peer (P2P) file sharing system is how to protect the anonymity of nodes when providing efficient data access services. By seamlessly combining the technologies of multi-proxy and IP multicast together, we propose a multicast-based protocol for efficient file sharing with mutual anonymity in this paper. Furthermore, the proposed protocol can adaptively adjust file distribution and reduce the multicast cost simultaneously. The simulations show that Mapper possesses the merits of scalability, reliability, and high adaptability with high performance.