基于交互证据广播的P2P信誉系统

提出了一种旨在激励P2P文件共享系统中用户诚实共享的信誉管理系统。让每个用户以全局信誉记录的形式保存其它用户对自己的评价,使得只要与某用户直接通信就可获知所有与之交互过的用户对该用户的评价。同时利用加密来保证全局信誉记录的完整性和有效性,并采用事后广播抗抵赖的交互证据的监督机制,以惩罚用户的信誉欺骗。该信誉系统相对其它全局信誉系统有着较小的下载启动延迟。

A P2P Reputation System Based on Broadcasting of Proof of Interaction

In this paper, we propose a reputation management system to encourage honest sharing in p2p file system ,where each peer save other peers' opinion of itself locally as global reputation records, so getting other peers' opinion about a certain peer could be achieved by direct communication with that peer without the need of polling the whole system. Encryption is introduced to keep integrity and validity of global reputation records .By broadcasting proof of interaction cheating on reputation could be easily detected and punished. Compared with other global reputation systems the proposed reputation system has a much shorter delay of start of downloading.