a trust management model based on bi-evaluation in p2p networks

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1、IEICETRANS.INF.&SYST.,VOL.E93D,NO.3MARCH2010466PAPERSpecialSectiononTrust,SecurityandPrivacyforPervasiveApplicationsATrustManagementModelBasedonBi-evaluationinP2PNetworks∗∗JingyuFENG†,YuqingZHANG††∗a),Nonmembers,andHongWANG†††,MemberSUMMARYThesecurityofP2Pnetworksdependsonbuildingtrustmosttrust

2、models,trustworthinessofpeersisusedtopre-managementamongpeers.However,currenttrustmanagementmodelsfo-ventuntrustworthyresourcesfromspreadingbymaliciouscusonpreventinguntrustworthyresourcesfromspreadingbymaliciousproviders[4].providers,buthavefeweffectsonreducingdenial-of-serviceattacksofma-Howev

3、er,thisapproachhassomeeffectsonthesim-liciousconsumersandfreeridingofselfishpeers.Pointingtotheseprob-lems,abi-evaluation∗∗∗trustmanagementmodel,calledBiTrust,ispro-pleidentifyingofmaliciousproviders,buthasfeweffectsposed.Inthismodel,thetrustworthinessofapeerisdividedintoserviceoncopingwithdenial-

4、of-serviceattacksofmaliciouscon-andrequesttrustworthiness.Servicetrustworthinessshowstheresourcessumersandfreeridingofselfishpeers.Forexample,thereliabilityofproviders,andrequesttrustworthinessisusedtodealwithre-requestresolutionofconsumingresourcesmaytendtoex-questsfromconsumers,whichcankeepawa

5、ymaliciousconsumersandencourageselfishpeerstoshareresources.Agenericmethodforevalu-hausttheprovidersservingcapabilities(likeprocessingca-atingserviceandrequesttrustworthinessisdescribed.Furthermore,thepacityandbandwidth)[5].Oneofthesimplestattacksofimplementationstrategiesofthemodelarealsodepict

6、edinthispaper.ThemaliciousconsumerscouldbeachievedbybombardingafollowinganalysisandsimulationshowthatBiTrustismoreeffectiveonproviderwithlotsofrequestssoastoreduceitscapabilitiesenhancinghigh-qualityresourcessharingamongpeersandmoreadvancedinsuccessfulexchangesrate.torespondtoothernormalrequests

7、andprovideresources,keywords:P2P,file-sharing,trust,bidirectionalresultingindenial-of-serviceattacks.Furthermore,freerid-ingmayleadtodegradationofthenetworkperformance.It1.Introductionhasbeenestablishedthatnearly70%ofGnutellauserss