研究可信分布式系统(IJWMT-V2-N3-7)

I.J.WirelessandMicrowaveTechnologies,2012,3,41-47PublishedOnlineJune2012inMECS()DOI:10.5815//ijwmt.2012.03.07Availableonlineat:Trustworthiness;trustworthydistributedsystem;controllability;survivability©2012PublishedbyMECSPublisher.Selectionand/orpeerreviewunderresponsibilityoftheResearchAssociationofModernEducationandComputerScience1.IntroductionAtpresent,thetechniquesofdistributedsystemareexcessive,miscellaneous,andthecostofimplementationisgreat.Theinfluenceontheperformanceofdistributedsystemisincreasinglycomplex.Theoverstaffedabuseisgraduallyrevealed.Forexample:1)distributedsystemisbuiltontheinsecureterminalsystemThemostprominentsecureproblemofterminalsystemispronetosufferfromtheerosionbythewormvirusandTrojanhorse.Becausethebulkofterminalsystemsdonotadoptenoughsafetyprecautions,someimportantprogramsandfileswillbedestroyed.Moreover,othergoalsystemswillbeattackedbythewormvirusandTrojanhorse.Therefore,thesewillleadtothedropofperformanceofthewholedistributedsystem.Distributedsystemisconfrontedwiththeseriouscrisisoftrust[1].*Correspondingauthor.E-mailaddress:[e-mail];[e-mail]42ResearchonTrustworthyDistributedSystem2)DistributedsystemisscareofthetrustedsafeguardmeasuresPracticesindicatethatthewormvirusandTrojanhorsecouldnotbekeptoutwithfirewall,IDS,andantivirussoftware.Ontheonehand,theseproductsmakehighrequirementforadministrators.Afewusersareabletofallshortofthiskindofdemand.Ontheotherhand,asfarasthearchitectureisconcerned,theseproductsareextraadd-ons.Theyascribethepassivedefensiveformsandcannotcopewiththesecuremenacewhichisincreasinglyvariational.Thesecureproblemsofdistributedsystemneedbesolvedandprovidemorereliablyandsimplycontrollablemeanstoconstructthetrustworthyenvironment[2].3)Distributedsystemisdevoidofcontrollabilityandmanageability;mostremote-behaviorisunpredictableAtthepresenttime,capabilityofdistributedsystemsisinsufficientinmangyconditionssuchasuserbehaviors,run-states,controllabilityandmanageabilityofsystemresource.Atthesametime,thosecapabilitiesareabsolutelynecessarynotonlyforthesecurityofdistributedsystemsbutalsoforhealthandcontinuanceofdevelopment.Therefore,newideasareneededtoresolvetheproblemssuchassecurityandfunctionofdistributedsystems.Toarriveatthegoalofintensifyingthetrustworthinessandcontrollabilityofdistributedsystems,throughbuildingthetrustworthymodelbetweenthedistributedsystemanduserbehaviors,constructingthearchitectureoftrustworthinessdistributedsystems,intensifyingthesurvivabilityofservices,andstrengtheningthemanageabilityofdistributedsystems,thecorefunctionofsecurealgorithmsandchipsshouldbefullyexerted.Thesecureproblemofdistributedsystemsincludingprotection,creditabilityandmanageabilityistoberadicallysolved.ThesecurityofserviceofdistributedsystemsisimprovedeffectivelyanddevelopmentofElectronicCommerceandElectronicGovernmentispromotedhealthilyandfleetly.Inthispaper,wepresentanewschemeforconstructingatrustworthydistributedsystemandmakeresearchonsecurekeytechniques.Insection1,weanalysethesituationofsecurityindistributedsystemsandpointsoutthenecessitytobuildtrustworthydistributedsystems.Insection2，weintroducethenotionoftrustworthydistributedsystem.Throughbuildingthetrustworthymodelbetweenthedistributedsystemanduserbehaviors,constructingthearchitectureoftrustworthinessdistributedsystems,intensifyingthesurvivabilityofservices,andstrengtheningthemanageabilityofdistributedsystems,thesecurityproblemofdistributedsystemsisradicallyresolvedinsection3.Thesignificanceofthispaperispresentinsection4.2.NotionofTrustworthyDistributedSystemsAtthepresenttime,therearedifferentcognitionstothetrustworthydistributedsystems:basedondependableauthentication,basedonconformityofexitingsecuritytechnologies,basedontrustworthinessofdistributedsystem,basedontrustworthinessofservicesupportedbydistributedsystem.Thedivergence