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1、CloudCryptographySenyKamaraCryptographyGroupMicrosoftResearchOutline•CloudArchitectureoWhatiscloudcomputing?•CloudEcosystemoWhoprovidesandwhoconsumescloudservices?•CloudCryptographyoWhatarethesecurityconcerns&howcancryptographyhelp?2/24/112ComputingasaService•ComputingisavitalresourceoEnterprise
2、s,governments,scientists,consumers,…•Computingismanageableatsmallscales…oe.g.,PCs,laptops,smartphones•…butbecomeshardtomanageatlargescalesobuildandmanageinfrastructure,schedulebackups,hardwaremaintenance,softwaremaintenance,security,trainedworkforce,…•Whynotoutsourceit?2/24/113ComputingArchitect
3、ureApplicationsEmail,WWW,DBs,…PlatformWindows,Linux,MacOSX,…Infrastructurememory,disk,network,2/24/114CloudServices•InfrastructureasaserviceoService:customercanstoredatainthecloudoCustomer:enterprise,developersoe.g.,MSAzurestorage,AmazonS3•PlatformasaserviceoService:customercanrunitsappsintheclo
4、udoCustomer:developersoe.g.,MSAzure,AmazonEC2,GoogleAppEngine,•SoftwareasaserviceoService:customermakesuseofappinthecloudoCustomer:consumers&enterpriseoe.g.,web-basedemail,Flickr,delicious,Facebook,OfficeWeb,GoogleDocs,…2/24/115CloudDeploymentModelsPublicPrivate2/24/116TheCloudEcosystem2/24/117W
5、hoProvidesCloudServices?2/24/118CloudInfrastructureProviders•Provideaccesstoinfrastructureoe.g.,Amazon,Microsoft,Google,IBM,EMC,Equinix,AT&T,Verizon•CharacteristicsoRequiresverylargeinvestments•builddatacenters•acquireexpertise•providephysicalsecurity•energyconsumption•…oLarge(often)publiclytrad
6、edcompaniesoHaveareputationtouphold2/24/119CloudServiceCompanies•Providecloud-basedapplicationsoe.g.,Salesforce,GoGrid,NetSuite•CharacteristicsoRequiressmallinvestment•developers•Platform/infrastructureservicesfromlargercloudprovidersoStartups(often)privatelyheld2/24/1110WhoConsumesCloudServices
7、?•Consumersoe.g.,Facebook(500+M),Web-basedemail(840M),Flickr,Dropbox,…•EnterpriseoE.g.,AmazonEC2/S3,MSAzure,GoogleAppEngine,GoogleApps•Governmentso120,000USDept.ofAgricultureemployeeswillmovetoMScloudserviceso17,000Gen.Serv.
