Date Added: Jul 2009
While Peer-To-Peer (P2P) file-sharing is a powerful and cost-effective content distribution model, most paid-for digital-Content Providers (CPs) use direct download to deliver their content. CPs are hesitant to rely on a P2P distribution model because it introduces a number of security concerns including content pollution by malicious peers, and lack of enforcement of authorized downloads. Furthermore, because users communicate directly with one another, the users can easily form illegal file-sharing clusters to exchange copyrighted content. Such exchange could hurt the content providers' profits. The authors present a P2P system TP2P, where the authors introduce a notion of Trusted Auditors (TAs).