云存储数据隐私保护机制的分析

《云存储数据隐私保护机制的分析》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、AbstractCloudcomputingisoneofthehottesttechnologiesthesedays.Cloudstorageextendstheconceptofcloudcomputing,whichhasbeenrapidlyusedinvariousfields.Thecharacterofdatamanagementandownershipseparation,whichmeansthecloudstorageserviceproviderisnotcompletelytr

2、usted,leadstothedifficultiesofdatasecurityandprivacyprotection.Thisthesisisconductedbyaseriesofresearchanddevelopmentintheseareas,mainlyincluding:(1)Thisthesissummarizestheexistingschemesfordataprivacyprotection,andanalyzestheiradvantagesanddisadvantages

3、.Anoveldataprivacyprotectionmodelbasedondatapartitionandclassificationisproposed.Themodelcanprotecttheprivacyofclouddata,anduserscanchoosetheappropriateencryptionclassificationaccordingtodifferentsecurityrequirementsofdata.Therefore,theproposedschemecana

4、chievetheflexibilityofcloudstorageapplications.(2)Accordingtothedataprivacybasedondatapartitionandclassification,thisthesisproposesamulti-authorityaccesscontrolschemewithacentralagencybasedonCP・ABE,whichissuitableforprivatecloudstorageenvironment.TheWeig

5、htedAccessStructure(WAS)isintroducedtosupportavarietyoffine-grainedthresholdaccesscontrolpolicy.Thentheschemeisprovedtobesecureandtheexperimentalresultsshowthecostsofthegenerationanddistributationofkeycomponents,andthecostofdataownercanbegreatlyreduceddu

6、ringuser'saccessbeingrevoked・(3)Accordingtothedataprivacybasedondatapartitionandclassification,thisthesisproposesamulti-authorityaccesscontrolschemewithoutacentralagencybasedonCP-ABE，whichissuitableforpubliccloudstorageenvironment.AnoptimizationofWASallo

7、wsdifferentlevelsofoperationforthesamefileincloudstoargesystem.Theconceptofidentitydyeingisintroducedtoimprovetheusers1informationprivacyfurther.There-encryptionalgorithmisimprovedintheschemesothatthedataownercanrevokeuser'saccessinamoreflexibleway.Thent

8、heschemeisprovedtobesecure・Theexperimentalresultsshowthatremovingthecentralagencycanresolvetheexistingperformancebottleneckinthemulti-authorityarchitecturewithacentralagency,whichsignificantlyimprovesuserexperiencewhenalar