外包存儲(chǔ)環(huán)境下完整性檢測方案的研究.pdf

1、電子科技大學(xué)碩士學(xué)位論文外包存儲(chǔ)環(huán)境下完整性檢測方案的研究姓名：胡欽超申請學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：涂曉東20100501ABSTRACTABSTRACTInrecentyears，withtheexplosiveexpansionofstorageneedsand也ellighcostofthestorageoutsourcingstorageapplicationshavebecomeincreasinglypra

2、cticalNowuserscallstorelargeamountsofdatainmultipleremoteserverswithrelativelylOWcostCorporationsandconllnonconsul：ncTSareincreasinglyturningtooutsourcingresourcesfordatastorage，withsecurityguaranteethatnobodycouldchange

3、ordeletetheirdata嬲wellasfileoperationsarecorrectlyimplementedSomeoutsourcingstoragesystemsalsoprovideadditionalservicestoensul“edataconfidentialityandintegrityofdatatransmissionHowevertheydonotprovideasolutiontoaddressth

4、estoragedataandoperationsintegrityproblem(atthesanletime，thestorageservermayalsobeanattacker)，whichispreciselyaveryimportantissueintheoutsourcingstoragesystemsTherefore，theclientsshouldhavetodeveloptheirownauthentication

5、solutionsNowdespitethatmanyintegritycheckingsolutionsareavailableeachofwhichhasspecialscopeofapplication，almostnoneofthemfitswellintheoustsourcingenvironmentTheoutsourcingstorageisnotjustuntrusted，butalsoneedstobepaidfor

6、beforeyouuseitTherefore，whatoutsourcingneedsisnotjustsafetybutalsocost—efficiencyThence，whencheckingthefileintegritynotjusttocalculateahashvalueoutoftheentirefile，buttodivide也efileintoblocks，thenbuildastatefulMACtreeasar

7、esult，thesolutioncouldsupportrandomcheckingofsomefileblockInadditiontocheckingtheintegrityofthefilecontent，thesolutioncouldstilldetectifthefileoperationsarecorrectlyimplementedSOthatifanoperationisnotcorrectlyimplemented

8、youdonotneedtocheckthefileintegrityIn。thispaperathreepartyauthenticationmodel(aseparateserverforauthenticationisincluded)isapplied，forreducingthesizeofthetrustedstoragespace(usuallytheclient’Sstoragespace)Meanwhileinthes

9、olution，thestatefulMACtreeforcheckingfilecontentintegritytheskiplistforcheckingoperationsequenceareusedBesides，thePolyl305一AESastheMACoptionhasgreatlyenhancedthecomputingefficiencyTheverificationprocessismanagedbyapplica