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1、ASurveyStudyonReputation-BasedTrustManagementinP2PNetworksSiddharthMainiDepartmentofComputerScienceKentStateUniversityKent,OH44240E-mail:smaini@kent.eduAbstractInthissurveystudyIhaveoutlinedvariousissuesinvolvedinthedesignofreputation-basedpeer-to-peer(P2P)system.Thesurveycanbeuse
2、dasareferenceguideinahopetomaketheP2Psystemsbasedontrustmanagementmodemorereliable,trustworthyandscalable.Thesurveypresentsastudyofreputation-basedP2Psystemscurrentlyinuse.IttakestheexampleofdecentralizedunstructuredP2PsystemssuchasGnutella,Kazaa,FastTrack,andSETIetc.Thetrustmanag
3、ementinP2Psystemsisusedinisolatingmaliciouspeersandtopromotehonesttransactionsbetweengenuinepeers.Reputation-basedP2Psystemshavethepropertytodetectsuchmaliciouspeersusingthereputationofthepeer(s)providingtheresource(s).KeywordsPeer-to-Peer,Trust,Management,Reputation-based,Network
4、s,Survey,P2P1.IntroductionApeer-to-peer(P2P)networkisagroupofComputernodeswhichconstructtheirownopenunrestrictedsharingnetworksontopoftheInternetarchitecture.Suchasystemperformsapplication-levelroutingontopofIProuting.Theusers(peers)havedualfunctionalityi.e.theyarefreetojointhenet
5、workandsharetheirresourcesbyfunctioningasclientswhentheyneedtodownloadandtheycanfunctionasaserverwhentheyneedtoserveresourcestootherusers.DuetothedistributednatureofP2PsystemsthereisnocentralpointofattackbutsuchkindofanarchitecturemakesP2Pnetworksverypronetomaliciousattacksbyother
6、peerslikesendingTrojans,Worms,Viruses,Fakefilesetc.Reputationsystemsprovideawayforbuildingtrustthroughsocialcontrolbyutilizingcommunitybasedfeedbackaboutpastexperiencesofpeerstohelpmakingrecommendationandjudgmentonqualityandreliabilityofthetransactions.Thechallengeofbuildingsuchar
7、eputationbasedtrustmechanisminaP2Psystemistoeffectivelycopeupwithvariousmaliciousbehaviorsofpeerssuchasprovidingfakeormisleadingfeedbackaboutotherpeers.Themostgeneralmechanismofestablishingtrustamongpeersisusingthereputationofthepeersprovidingtheresource.Theuserscanratethereliabil
8、ityofthosepeerswithwhichtheyhaved
