摘要： free-riding现象以及各种恶意节点行为是制约对等网络应用发展的重要因素。以节点的交易审计为基础，结合信任评估模型，提出一种针对节点交易记录的信用评估算法。利用激励机制抑制网络中的free-riding现象，采用签名和审计方式防止各种安全性攻击。仿真实验结果表明，该算法具有较好的性能和实用性。

关键词: 对等网络, 信任评估, 审计, 节点信用

Abstract: Free-riding and some malicious actions have hampered development of Peer-to-Peer(P2P) network. This paper proposes a peer reputation audit and evaluation algorithm which is based on peer transaction records and improves exist trust evaluation model. The audit and evaluation algorithm employs incentive mechanism to restrain free-riding, employ digital signature and audit to restrain diversified malicious action. Simulation experimentsal results show that the algorithm is efficient and practicality.

Key words: Peer-to-Peer network, trust evaluation, audit, peer reputation

中图分类号: 

• TP309.2