ArchSummit全球架構(gòu)師峰會-《Data Outsourcing in Cloud Computing;Reliability,Security and Privacy》－曹寧

waImartLabsEngineeringManager.標題文本..標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本.標題文本waImartLabsEngineeringManager?NingCaoisanengineeringmanagerinsearchruntimeteamatWalmartLabs.Priortothat,heworkedatGoogle,Huawei.?NingreceivedhisPh.D.inElectricalandComputerEngineeringatWorcesterPolytechnicInstitute.Hispublicationshave4000+citations..DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.SearchoverEncryptedCIoudData.CIoudComputing.greatfIexibiIity.economicsavings.PubIicCIoudinChina.IAAS:fastgrowing.70%:cIoudhost,cIoudstorage.CIoudCustomers.Current:internetcompanies.Game,e-commerce,mobiIe,sociaI,etc.Next/Ongoing:traditionaIindustrieseaIthmedicaIhospitaImanufacturing,transport,etc..SensitivedataoutsourcinginpubIic/hybridCIoud.Dataowner:government,finance/bank,heaIth/medicaI/c.Requirement:dataownership,responsibiIity.Concerns:reIiabiIity,avaiIabiIity,security,privacy,integrity,etc..DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.SearchoverEncryptedCIoudData.DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.FountainCodesBasedReIiabIeStorage.SearchoverEncryptedCIoudData.Erasurecodes-based.Pros:muchIessdataredundancyhput.Cons:Iessrepaircommunication.Nworkingtechnique.increasenetworkthroughput.Networkcoding-based.Pros:Iessrepaircommunication.Cons:highdecodingcost.Networkcoding-based.Pros:Iessrepaircommunication.Cons:highdecodingcost.HowtoperformdatarepairanddataretrievaIatminimaIcostin.Bothdatastorageandtransmissionarecharged.“pay-as-you-use”.Iowstorage,computationandcommunicationcost.DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.ExistingRedundancyTechniques.FountainCodesBasedReIiabIeStorage.SearchoverEncryptedCIoudData.LTcode(Lubytransformcode).Near-optimaIerasurecodes.aIImoriginaIpacketscanberecoveredfromanym(1+e)encoded.EfficientdecodingO(m*Inm):FastBeIiefPropagationdecoderorage.GoaI:aIImoriginaIpacketScanberecoveredfromanym(1+e)dpacketSequaIIyintongroupS.RuntheBeIiefPropagationdecoderoneveryk-combinationofngroupS.Howtodoexactrepair?.Astraightforwarddatarepairmethod.recoveraIIoriginaIdatapacketsifastorageserveriscorrupted.dotheencodingtogeneratecodedpackets.Introducemuchcostofbothcomputationandcommunication!.Exactrepair.OnerepairserverSn+1.DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.SearchoverEncryptedCIoudData.SearchabIeEncryption.PredicateEncryption.SensitiveDtectdataprivacyandcombatunsoIicitedaccesses.EncryptionmakesdatautiIizationachaIIengingtask.DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.SearchoverEncryptedCIoudData.SearchabIeEncryption.PredicateEncryptionDataContributorMultipleDataContributor.AppIicationsrPubIicheaIthmonitoring.StocktradingViasemi-trustedbrokers.Datacontributorsencryptsandoutsourcesdatatosemi-trustedserVer；.Trustedauthority(dataowner)giVesauthorizedusersthesearchcapabiIity(e.g.trapdoors)；pteddata.AppIications.Creditcardpaymentgateway.DatabasecaIrecords.AuditIogs--network,financiaI.networkgateway/financiaIinstitutions,authorizedauditorPrivacyPrivacyPrivacyEncryptedSearchableIndexPrivacySearchAccessPrivacyPrivacyPrivacyEncryptedSearchableIndexPrivacySearchAccesseterministicPrivateInformationRetrievalPPrivacyinSESSearchPrivacyTTraditional.FunctionaIitySearchhExistingwork.FunctionaIitySearchhSeaSearchableSearchleleSearchSimilarityExistingworkSimilarity.IRRankTechniqueSimilaritySSimilarityeRuleSearchableExistingworkSearchable.IndexconstructionSearchativeSearchableEncryptionBasicAsymmetricativeativeSearchableEncryptionBasicAsymmetricativeBilinearSecretngOderPreserving.CryptoTechnique.CryptoTechniqueBilinearSingleSingle.DataOutsourcinginCIoudComputing.ReIiabIeDataOutsourcing.SearchoverEncryptedCIoudData.SearchabIeEncryption.PredicateEncryption.TraditionaIencryptions:onIyownerofsecretkeycandecrypt.Attribute-basedEncryption(ABE):fine-grainedaccesscontroI.AccesspoIicyembeddedinciphertext.Keyassociatedwithattributes.CiphertextcouIdbedecryptedifkey,sattributessatisfyaccesspoIicy.Existingworks:.Identity-basedencrypt