云计算环境下数据安全多维防护体系的分析与设计

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1、ABSTRACTARertheageofpersonalcomputerandIntemet，cloudcomputingisregardedasthethirdinf．omationtechnologyrevolution．AsaproductofcomputertecllnologyandIntemettechnologyinte铲atiVedevelopment，cloudcomputinghadbroughtmajorupdateoftheinfbmationtechn0109yindustrymode．Itisgra

2、duallybeingextendedtovariousapplicationfields．Butbecauseofthehugesystemofcloudcomputing，alotofuserprivacydataiscarried．Conlbinedwithopennessandcomplexity；therearemoreseriouschallengesofsecurityissuefacingthanthetraditionalin仍rmationsystem．Atpresent，ithadexposedVario

3、ussecurityproblemsintheprocessofcloudcomputingapplication．Forcopingwiththeseproblems，themajorapplicationagenciesproposetheircloudsecuritys01utionsinsuccession．Andtheresearchersproposetheirachievementswhichbasedononekindofspecifictechniquesofcloudsecurity．Aimingatthe

4、confidentiality，integrityandaVailabilityofthedata，andcombiningwiththecharacteristicsofcloudcomputingarchitecture，thisthesisproposeonekindofmultidimensionalprotectionsystemwhichbasedonuser-dimension，data—dimension，application-dimensionandbasic·dimension．Accordingtoth

5、isclassification，thesa佗tytechn0109iesandstrategieswereproposedspecifically．Simultaneously’thesubjectswhichuseandmanage“cloud”(cloudcomputingusersandserViceproViders)andtheenvironment(networkhardwareenVironmentandthesocialsystemenViI．onment)wereacc印tedintocloudsecuri

6、tysystem．Thedestinationofthissystemisto乒asptheproblemsofallaspectsintheprocessofapplicationandpromotionofcloudcomputingasfaraspossible，soastosetupathoroughandcomprehensiVe”trustedcloudItsystem．Inthediscussionofthemulti—dimensionalsystemmodel，eachdimensionhasitsfocus

7、ed．Theuser-dimensionalusethetrustmanagementtechn0109yasthefocus，andhadputfbnⅣardtheidentityauthenticationandauthorizationsystemwhichbasedontrustmanagement．Thedata-dimensionalusethedataencryptiontechnologyasthefocus．Andacloudstorageencryptions01utionisproposedandimpl

8、emented．Theservice—dimensionalusethesecurityauditandmonitoringasthefocus，aserVice—orientedcloudsecuritymonitoringsystemispmposed．Thebasic-