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1、Aug.2006,Volume3,No.8(SerialNo.21)JournalofCommunicationandComputer,ISSN1548-7709,USAReputation-basedTrustModelinGridSecuritySystem123BaolinMa,JizhouSun,CeYu(1,2,3SchoolofElectronicInformationEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Thesecurityproblemisahottopicingridresearc
2、hveryimportantundertaking.Atpresent,manyduetothedynamicsanduncertaintyofgridsystem.Thereare[2,3]researchesongridsecurityhavebeenundertaken.threeentitiesdefinedasusers,applicationsandresourcesingridenvironment.Insuchsituation,usersarevulnerabletoriskSecuritymanagementmechanisminGlobussupportsb
3、ecauseofpotentialincompleteordistortedinformationtransport-levelandmessage-levelsecurity.providedbymaliciousresources,andasgridsystemgrowsTransport-levelsecurityisbasedontheGSIsecuritytremendouslyinsize,thepossibilityofuserstoattackthemechanism.GSIprovidesmanysecurestrategies,networkbyprovidi
4、ngaggressiveorviciousapplicationswillincreasegreatly.Trustmanagementisaneffectivemethodtosuchasauthentication,singlesignon,credentialsandmaintainthecredibilityofthesystemandkeephonestyofthecollaborationbetweenlocalsecurestrategyandentities.Thispaperpresentsatrustmodel,whichisusedtosecurestrat
5、egyofthewholesystem.Thecomputeandcomparethetrustworthinessofentitiesinthemessage-levelsecurityisimplementedattheSOAPsameautonomousanddifferentdomains.Thismodelprovidesdifferentmethodstodealwiththeproblemsofusersandrelatedmessagelevel.Itcanbeseenthattherearetworesourcesbelongingtothesameordiff
6、erentdomains.message-levelsecuritymechanisms:GSIsecureFurthermore,asimulationexperimentisprovidedtoevaluateconversationandGSIXMLsignature.thetrustmodel,andthesimulationresultshowsitiseffective*Althoughthesesecuretechniquesaredevelopingtoresolvethesecurityproblemsingridenvironment.Keywords:Gri
7、dSecurity;Reputation;TrustModelmaturerandmaturer,therearemanykindsofrestrictionsmoreorless.Forexample,withthe1.Introductiondevelopmentofgrid,thenumberofusersandresourceswillbenumerous,theremustbemanyGridsystemhasbeendefinedasthenextgeneration
