安全操作系统下BS架构应用的访问控制机制研究的中期报告

安全操作系统下BS架构应用的访问控制机制研究的中期报告AbstractThismidtermreportpresentstheprogressmadeintheresearchonaccesscontrolmechanismsforBSarchitectureapplicationsinsecureoperatingsystems.Thereportprovidesabriefintroductiontotheresearchobjectives,methodologyandplan,followedbyasummaryoftheachievementsmadesofar,includingaliteraturereview,astudyofexistingaccesscontrolmechanisms,andthedesignofanewmechanismbasedonrole-basedaccesscontrol.Futureworkisoutlined,includingtheimplementationandevaluationofthenewmechanism,andpotentialdirectionsforfurtherresearch.IntroductionTheobjectiveofthisresearchistodevelopaneffectiveandefficientaccesscontrolmechanismforapplicationsbasedontheBS(Browser/Server)architectureinsecureoperatingsystems.BSarchitectureseparatestheclient-sideuserinterfaceandtheserver-sideapplicationlogic,makingitoneofthemostpopulararchitecturesforweb-basedapplications.However,theopenanddynamicnatureofweb-basedapplicationsmakesthemvulnerabletosecuritythreatssuchascross-sitescriptingandSQLinjection.Toaddressthesethreats,secureoperatingsystemshavebeendeveloped,whichprovideasecureexecutionenvironmentforweb-basedapplications.Oneimportantaspectofsecureoperatingsystemsisaccesscontrol,whichensuresthatonlyauthorizedusershaveaccesstoresourcesandfunctionality.Accesscontrolisafundamentalsecuritymechanismthatplaysacriticalroleinprotectingtheconfidentiality,integrityandavailabilityofdataandservices.InthecontextofBSarchitectureapplications,accesscontrolisparticularlyimportantbecauseofthedistributedandheterogeneousnatureofthearchitecture.MethodologyandPlanTheresearchmethodologyconsistsoffourstages:literaturereview,analysisofexistingaccesscontrolmechanisms,designofanewmechanism,andimplementationandevaluationofthenewmechanism.Theresearchplanissummarizedasfollows:1.LiteratureReview:Acomprehensiveliteraturereviewwasconductedtoidentifythestate-of-the-artinaccesscontrolmechanismsforweb-basedapplications.ThereviewfocusedonBSarchitectureandsecureoperatingsystems,andincludedbothacademicandindustrialsources.2.AnalysisofExistingAccessControlMechanisms:AstudywasconductedtoanalyzetheexistingaccesscontrolmechanismsusedinsecureoperatingsystemsforBSarchitectureapplications.Theanalysisfocusedontheirstrengthsandweaknesses,andidentifiedareasforimprovement.3.DesignofaNewAccessControlMechanism:Basedontheanalysisofexistingmechanisms,anewaccesscontrolmechanismwasdesignedthataddressestheshortcomingsofexistingmechanisms.Thenewmechanismisbasedonrole-basedaccesscontrol(RBAC),whichisawell-establishedandwidelyusedaccesscontrolmodel.4.ImplementationandEvaluationoftheNewMechanism:Thenewmechanismwillbeimplementedinaprototypesecureoperatingsystem,anditsperformanceandeffectivenesswillbeevaluatedusingbenchmarkapplicationsandsecuritytestingtechniques.AchievementsThefollowingachievementshavebeenmadesofar:1.LiteratureReview:Acomprehensiveliteraturereviewwasconducted,whichidentifiedthestate-of-the-artinaccesscontrolmechanismsforBSarchitectureapplicationsinsecureoperatingsystems.ThereviewidentifiedRBACasthemostpromisingmodelforaccesscontrolinthiscontext.2.AnalysisofExistingAccessControlMechanisms:AstudywasconductedtoanalyzetheexistingaccesscontrolmechanismsusedinsecureoperatingsystemsforBSarchitectureapplications.Theanalysisshowedthatthesemechanismshaveshortcomingsintermsofscalability,flexibility,granularityandusability.3.DesignofaNewAccessControlMechanism:Basedontheanalysisofexistingmechanisms,anewaccesscontrolmechanismwasdesignedthataddressestheshortcomingsofexistingmechanisms.ThenewmechanismisbasedonRBAC,andincludesfeaturessuchasattribute-basedaccesscontrolanddelegationofauthority.FutureWorkThefollowingworkwillbeconductedinthenextstageoftheresearch:1.ImplementationoftheNewMechanism:Thenewmechanismwillbeimplementedinaprototypesecureoperatingsystem,anditsperformanceandeffectivenesswillbeevaluatedusingbenchmarkapplicationsandsecuritytestingtechniques.2.EvaluationoftheNewMechanism:Theeffectivenessandefficiencyofthenewmechanismwillbeevaluatedusingsecuritymetricssuchasaccuracy,completeness,efficiencyandscalability.3.FutureResearchDirections:Potentialdirectionsforfurtherresearchwillbeexplored,suchastheintegrationofthenewmechanismwithothersecuritymechanisms,thedevelopmentofapolicylanguageforRBAC,andtheapplicationofmachinelearningtechniquestoaccesscontrol.ConclusionThismidtermreportpresentedtheprogressmadeintheresearchonaccesscontrolmechanismsforBSarchitectureapplicationsinsecureoperatingsystems.Thereportprovidedanintroductiontotheresearchobjectives,methodologyandplan,followedbyasummaryoftheachievementsmad