p2p reputation system credibility analysis tradeoff and design decisions

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1、P2PReputationSystemsCredibilityAnalysis:TradeoffsandDesignDecisions*EleniKoutrouliandAphroditeTsalgatidouDepartmentofInformaticsandTelecommunications,NationalandKapodistrianUniversityofAthens{ekou,atsalga}@di.uoa.grAbstractattacksthemselves.Anumberofdefensemecha

2、nismshavebeenproposedascountermeasurestospecificPeer-to-Peer(P2P)systemsaredistributedself-attacks,buttheliteraturelacksacompletethreatorganizedsystemswithoutacontrollingentitywhereanalysiswhichwillrevealallpossibleattacksofapeersneedtomaketrustdecisionsregardin

3、gwhotheyreputationsystemandtheneedforsuitablewilltransactwith.P2Preputationsystemsexploitpastcountermeasures.Furthermore,itisnotclearhowthetransactionalinformationtoprovidemembersofP2Pexistingmechanismscanbeusedincombination,asnetworkswithmeasureswhichwillhelpth

4、emmakemechanismswhichcounteractaspecificattackmaysuchtrustdecisions.However,thesesystemsarefavorotherattacks.Inotherwords,thereexisttradeoffsvulnerablethemselvestovarioustypesofattackswhichbetweencredibilityenhancingmechanismswhichhavecandistorttheirfunctionalit

5、yandcredibility.Anotsystematicallybeenstudied.Thesetradeoffshavenumberofdefensemechanismshavebeenproposedtotobeconsideredwhendesigningareputationsystemincounteractspecificattacks,butresearchlacksanordertobalancethedesiredcredibilityfeatures.Workexplorationofhowt

6、hesemechanismscanbeusedrelatedtoreputationsystemscredibilitycanbefoundtogethersoastoprovidethehighestdegreeofin[1]and[2];however,theissuesoftradeoffsandcredibility.Inthispaper,afterpresentingthebasicrelateddesigndecisionsarenotdiscussedintheattacksanddefensemech

7、anismsconcerningP2Pliterature.reputationsystems,weanalyzethetradeoffsbetweenInthispaperweexplorethetradeoffsbetweendifferentcredibilityenhancingmechanismsandwayscredibilityenhancingmechanismsinreputationtoachievetherightbalances.Ouraimistohelpsystems.Additionall

8、y,wepresentsomewaystoreputationsystemsdesignerstoincorporateintheirachievethenecessarybalances.Ouraimistosupportsystemstherightmechanismsortherightthedesignprocessofc