Date Added: Aug 2011
A lot of attention has been paid to anonymity due to the users' privacy protection. While Peer-To-Peer (P2P) networks need anonymity capacity, the authority also requires partner traceability to prevent anonymous abuse. So there is a challenge to harmonize the dilemma between the anonymity and authentication in P2P networks. Few P2P protocol provides complete anonymity as well as traceability. In this paper, the authors propose a security mechanism to ensure anonymity for honest peers and traceability for misbehaving peers in P2P systems. They utilize superposition watermarking based anonymity trace scheme to resolve the conflicts between traceability and anonymity.