摘要
P2P网络具有开放性、匿名性和自治性等特点。信任的缺乏导致节点之间的交易存在风险,阻碍了P2P网络的进一步发展。针对P2P网络所建立的信任机制能确保节点间正常交易,但由于P2P网络的特点和网络的复杂性,使P2P信任机制的部署不易实施。为此,分析了P2P网络中信任机制面临的网络攻击,详细研究了相关的影响因素,发现信誉值的计算不仅应关注上传节点,还应该关注下载节点。从上传节点和下载节点两个角度给出了影响因素的分布。这些影响因素的研究有助于对P2P信任机制的进一步研究。
P2P network have characteristics of open, anonymity and autonomy. There are risks in transactions between peers due to the lack of trust, which limits the further development of P2P networks. P2P trust mechanism can ensure the success of transactions between peers. However, the implementation of P2P trust mechanism is difficult because of the inherent characteristics of P2P networks and the complexity of network. The network attacks confronted by P2P trust mechanism are analyzed and the impact factors are discussed in detail. It is found that the calculation of reputation value should be focused not only on upload peers, but also on download peers. The distribution of impact factors is given from both aspects of upload peers and download peers, and the research on impact factors will help the further research on P2P trust mechanism.
出处
《计算机时代》
2013年第6期23-26,共4页
Computer Era
关键词
P2P网络
信任机制
网络攻击
信誉值
P2P networks
trust mechanism
network attack
reputation value
