摘要
在P2P文件共享系统中,存在不少节点不主动提供资源甚至提供虚假、恶意的资源。为了孤立这些恶意节点和鼓励节点多共享自己的文件,在分析一些现有信任模型的基础上,提出了基于文件附加信息的信任模型,该模型从文件的信任度出发导出用户的信任度,并在计算过程中考虑了相关因素,激励用户多为整个P2P网络做贡献,从而提高了整个网络的活力。通过实验仿真和分析表明:该模型能有效地隔离恶意节点,提高交易成功率,可使节点之间更有效地建立互信关系,进而提高系统的稳定性和可靠性。
There are some nodes that do not take the initiative to provide resources or provide false,malicious resources in P2 P file sharing system.In order to isolate these malicious nodes and encourage nodes to share their files,on the basis of the analysis of some existing trust models,a trust model based on file additional information is proposed.The user＇ s reputation is educed from the file reputation in this model.And the related factors are considered in the process of calculation,which encourages the users to contribute more to the entire P2 P network,so the whole network vitality is improved.The simulation results show that this model can effectively isolate malicious nodes,greatly improve the rate of the successful transactions and more effectively help peers establish trust relationships in open P2 P networks.Thus stability and availability on files sharing system are improved.
出处
《测控技术》
CSCD
2015年第2期95-98,共4页
Measurement & Control Technology
基金
江苏省科技支撑计划(BE2012112)
江苏省淮安市科技支撑计划(HAG2010049)
关键词
P2P
文件共享系统
信任模型
文件信任值
用户信任值
P2P
file sharing system
reputation model
file reputation value
user reputation value
