SWP2P: P2P Anonymous Trace System based on Superposition Watermarking
Xiaoliang Wang, Xingming Sun, Hengfu Yang, Saeed Arif Shah · International Journal of Digital Content Technology and its Applications · 2011
A lot of attention has been paid to anonymity due to the users’ privacy protection. While peer-topeer (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, we propose a security mechanism to ensure anonymity for honest peers and traceability for misbehaving peers in P2P systems. We utilize superposition watermarking based anonymity trace scheme to resolve the conflicts between traceability and anonymity. This scheme uses information processing technology similar to CDMA to superpose path information. Security analysis and simulation result show that the superposition watermarking based P2P anonymity trace scheme (SWP2P) can attain tradeoff between anonymity and traceability perfectly.