基于虛擬機的實時文件保護機制研究

1、華中科技大學碩士學位論文基于虛擬機的實時文件保護機制研究姓名：蔣雅利申請學位級別：碩士專業(yè)：計算機系統(tǒng)結(jié)構(gòu)指導教師：蔣文斌20090501華中科技大學碩士學位論文華中科技大學碩士學位論文IIAbstractWiththedevelopmentofvirtualizationtechnologyfileprotectioninvirtualmachine(VM)especiallyinguestOSbecomesmemeimptant.T

2、raditionalhostbasedfileprotectionsystemresidesthecriticalmodulesinmonitedsystemwhichiseasilyexpleddestroyedbymalwares.Meoverindertoprotectthemultipleoperationsystemsrunningonthesameplatfmitisnecessarytoinstallindependent

3、fileprotectionsystem(FPS)feachofthemwhichgreatlywastescomputingresourcesbringsseriousperfmanceoverhead.AnovelVMbasedrealtimefileprotectionsystemnamedVRFPisproposedtosolvetheseproblems.Firstlyvirtualmachinemonit(VMM)intro

4、spectallfileoperationsofguestOSthensemanticgapbetweendiskblocklogicfilesisnarrowedbyblktapfinallyavirtualsboxisimplementedinprivilegeddomaintopreventprotectedfilesinguestdomainfrommodifyingillegally.Theapproachishighlyis

5、olatedtransparentwithoutmodificationonvirtualmachinemonitguestOS.Theexperimentalresultsshowthatthepresentedsystemisvalidateoflowperfmanceoverhead.Theresultsoftestsshowthatvirtualmachinebasedrealtimefileprotectionmechanis

6、mcaneffectivelyensurethespecifiedfilesinguestOShaslowperfmanceoverheadtothespeedofcompressingdecompressingfilesthefilereadingwritingspeedinthetargetOS.Besidesitcanadapttothedynamicdeploymentofvirtualmachinecreationdestro