对等网环境下一种安全有效的信誉体制

Secure and efficient reputation system in P2P networks

提出一种基于公钥体制的安全有效的分布式信誉体制。定义了存储客户端信息的客户证书CCert和存储信誉信息的信誉证书RCert;采用与现有信誉查询方式不同的混和式查询,保证了信誉查询的有效性和安全性;同时生成最近时戳来保障信誉信息的实时性。此外,本体制还具有信誉信息的完整性、不可否认性、防合谋、防报复等特性,从而更好地提高对等网的可用性。

This paper presented a secure and efficient reputation system in P2P networks. It defined certificate CCert storing client information, and certificate RCert storing reputation information. Its mode of searching reputation was different from those existing modes, and ensured the efficiency and security of searching reputation. At the same time, it produced the last-time timestamp for the real-time characteristics of reputation information. Additionally, the system had other characters such as integrity of reputation information, non-repudiation, collusion-resisted and retaliation-resisted, which improved the usability of P2P networks.