a trust degree based access__ control in grid environments

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1、InformationSciences179(2009)2618–2628ContentslistsavailableatScienceDirectInformationSciencesjournalhomepage:www.elsevier.com/locate/insAtrustdegreebasedaccesscontrolingridenvironmentsaa,*bJunzhouLuo,XudongNi,JianmingYongaSchoolofComputerScienceandEngineering,SoutheastUniversity,Nanjing,PRChina

2、bSchoolofInformationSystems,FacultyofBusiness,UniversityofSouthernQueensland,AustraliaarticleinfoabstractArticlehistory:Thepurposeofgridcomputingistoenablecoordinatedresourcesharingandsupportcoop-Received1August2007erativeworkbetweendifferentdomainsindynamicgridenvironments.InordertoprotectRece

3、ivedinrevisedform5January2009eachparticipant’sprivilegeandsecurity,asecureandefficientaccesscontrolisessential.Thispaperpresentsanewapproachofaccessmechanismbasedontrustrelationshipsacrossdomains.Anewcalculationmethodoftrustingridisproposedandthedifferencebetweenintro-domaintrustandinter-domaint

4、rustisanalyzed.Inaddition,anovelaccessKeywords:controlframeworkcombinedwithtrustdegreeisgivenfromthisproposal.ItisshowntoGridbeadaptiveforbothintro-domainandinter-domainconditions.Hence,aprototypesystemTrustSecuritybasedontheproposedmodelisintroduced;furthermore,ithasbeenshownasadynamicAccessco

5、ntrolandfine-granularityaccesscontrolmethodthroughperformanceanalysesandhasalsoResourcesharingbeendemonstratedasasuitablesystemforgridenvironments.Ó2009ElsevierInc.Allrightsreserved.1.Introduction‘‘Grid”computing[6]hasemergedasanimportantnewresearchinthefieldoftelecommunications.Itisdifferentfrom

6、conventionaldistributedcomputingforlarge-scaleresourcesharing,innovativeapplicationsandhigh-performanceorienta-tions:becausethepurposeof‘‘Grid”is‘‘toenablecoordinatedresourcesharingandproblemsolvingindynamic,multi-insti-tutionalvirtualorganizations”[5].VO(VirtualOrganization)oftenconsistsofoneo

7、rmoredifferentadministrativedomains.Thesedomainsareownedbyvariousenterprises,universitiesandothertraditionalorganizations.Therefore,thecontextofgridcomputingleadstoanumberofnewsecuritychallenges[7,26].Gridusersandresourceproviders