MILE:英特尔SGX和区块链安全：iExec的端到端解决方案_EXE

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英特尔SGX和区块链

iExec端到端解决方案

iExec很荣幸地宣布即将推出首个集成英特尔SGX的端到端解决方案，用于分布式计算的安全技术应用。在2018年10月30日布拉格Devcon4会议上，iExec和英特尔将宣布重大合作新闻。

张磊，iExec安全总监介绍了英特尔SGXEnclave技术，以及如何保证参与区块链网络的用户和应用的安全问题，特别是基于区块链的分布式云技术方面。

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正文相关链接

IntelSGX:https://software.intel.com/en-us/sgx

Thechallenge:Howcanweguaranteesecurityondecentralizedanddistributednetworks?

Blockchain-basedapplicationsandcomputingarenotownedorcontrolledbyonespecificentitybutratherpoweredbyadistributednetworkofmultiplemachinesor‘nodes’.Thedistributednatureofdecentralizedcloudcomputingnetworkspresentachallengetoguaranteesecurityasanyrootprivilegeusermayeasilyinspectthesensitivedataandtamperwiththeapplicationrunningonthedecentralizedhost.Fortraditionalcentralizedcloudcomputingproviders,itiseasiertoemployexistingsecuritymechanismsprotecttheinvolvedapplication.

Fordecentralizedblockchain-basedclouds,asilicon-basedsecuritysolution,called‘IntelSGX’,istheonlyefficientsolutiontoprotectusersandapplicationsinvolvedinBlockchain-baseddecentralizedcomputing.

IntelSGX(IntelSoftwareGuardExtensions),isasetofCPUinstructioncodesthatenabletheexecutionofselectpiecescodeanddatainprotectedareascalledenclaves.Basically,whileyouhaveanapplicationrunningonahostmachine,SGXenclavesessentiallyactasabubble,isolatingandprotectingtheapplicationfromthehostmachine,inthisway,eventherootprivilegeadministratorofthehostmachineisnotabletopenetratethisbubbletoaccessandtamperwiththeapplication.

Binance将于7月13日下架QTUM、ZEN等七个币种逐仓杠杆交易对:7月7日消息，根据官方公告，Binance将于北京时间7月10日14点暂停ATA/BUSD、FORTH/BUSD、JST/BUSD、QTUM/BUSD、SUN/BUSD、ZEN/BUSD、ZRX/BUSD逐仓杠杆借贷；7月13日14点将对上述七个币种持仓用户进行平仓、自动结算并下架逐仓杠杆交易对。[2023/7/7 22:24:19]

AnintroductiontoIntelSGXEnclaves-iExecSecurityR&D,LeiZhang

“WhatmakesIntelSGXcompellingisthatitprovidesahardwaretrustedexecutionenvironment(TEE),allowingbetterprotectionsfordatain-use,at-restandin-transit,built-inCPUinstructionsandplatformenhancementsprovidecryptographicassertionsforthecodethatispermittedtoaccessthedata.Ifthecodeisalteredortampered,thenaccessisdeniedandtheenvironmentdisabled.”

—RickEchevarria,VicepresidentofIntel’sSoftwareandServicesGroup.

1.TheiExecE2ESGXsolution

iExecispioneeringthebuildingofablockchain-enableddecentralizedanddistributedcloudnetwork.Theyhavenowprovidedthefirsteverfullandend-to-endsolutionintegratingSGXfortheblockchain-basedcloud.SomeofourinitialworkwithintelSGXcanbereadinthisblogpostandiscoveredinthisvideopresentation.iExecpresentedthefirstphaseofworkonSGXinMarch2018attheIBMThinkConferenceinLasVegasandco-presentedalongsideIntelinMay2018atConsensusinNewYork..Thisfirstphasefocusedontheprotectionofthesecretsbuiltindecentralizedapplications:althoughtheapplicationsrunsondecentralizednodes,theinvolvedsensitivedatacannotbeinspectedoralteredwithbymaliciousattackersonthenetwork.Howeverthefirststageofworkwasbasedonsomesophisticated(raw)frameworksandthefunctionalityofthesolutionwaslimitedtoonlyprotectnativesecretsoftheapplication,furthermorethesolutioncouldbecomplicatedforappdevelopersandusers,especiallyforthosewhoarenotinthefieldofITandcomputing.

今日恐慌与贪婪指数为64，等级为贪婪:金色财经报道，今日恐慌与贪婪指数为64（昨日为62），等级为贪婪。注：恐慌指数阈值为0-100，包含指标：波动性（25%）＋市场交易量（25%）＋社交媒体热度（15%）＋市场调查（15%）＋比特币在整个市场中的比例（10%）＋谷歌热词分析（10%）。[2023/6/25 21:58:38]

iExechastocontinuedtomakesignificantcontributions,workingdiligentlywithourpartners,topushforwardapowerfulanduser-friendlyend-to-endSGXsolution.Thissolutionisintendedtobeusedasanindustryreferencetoenhancetheoverallsecurityofdecentralizedcloudcomputing.ThisnewSGXsolution,combinedwithBlockchain,allowsforunmatchedleveloftrustforDecentralizedApplications(Dapps)andexecution/dataprocessingondecentralizednodes.TheiExecapproachspecificallyallowsBlockchaintoworkwithSGXinorderto:

ProtecttheDAppandprovidefulldataprotectionthatcannotbeaccessedbytheexecutionhost,especiallyforuser’sinputandoutputdata.

GuaranteetheintegrationoftheDapp/Data,makingsurethecorrectandexpectedDApporDataisrunningonthedecentralizednode.

Provideblockchain-basedvalidationforoff-chaincomputing,verifyingthattheDappiscorrectlyexecutedinanenclaveandisneithertamperednorinterruptedbythedecentralizednode.Asmart-contractsignatureissignedinsidethissecureenclavebeforetheverificationisdonebytheblockchainnetwork.

MakesuretheexecutionandDAppresultisvalid,neithercopied,norfabricatedbymaliciousdecentralizednode.

现场 | 英特尔平台安全总监李志强：可信执行计算在区块链里有四大应用:金色财经现场报道，百度智能云Techday11月21日在北京举行。英特尔平台安全总监李志强在会上表示，数据有存储、传输、运行三种状态，可信执行计算解决的是运行状态的数据安全，可信执行计算在区块链里可以有四大应用：密钥隔离管理（私钥存储）、可信执行也就是链上链下一致性和远程验证、高性能和可扩展非POW基于可信执行计算的共识机制、隐私保护（无关第三方数据隐私隔离）。[2019/11/21]

Protecttheend-to-endprivacyofDAppresult,whichcanneverbeinspectedbyanyoneelsebuttheuser.

Afriendly-userinterface:significantsimplificationforuserstoencrypt/decrypttheinput/outputdataandtriggertheSGXapplicationexecution.

EasyusabilityisakeyelementofUserExperience;withthenewiExecE2ESGXsolution,useronlyneeds3simplestepstorunanE2ESGXapplicationandtoprovideafullprotectionofuser’sinputandoutputdata.

Let’sthinkaboutatypicalSGXapplication,sayforexampleaFinTechapplication.Theapplicationisfedbysomeuserinputdatawhichcontainssomeuser’spersonalandsensitivesecrets(e.g.bankaccountinformation,personalprivacy,etc…),theoutputresultsoftheapplicationalsocontainsomesensitivedataandareonlyintendedtouserwhotriggerstheapplication.Theinputdataandtheoutputresultsneedtobestrictlyprotectedduringthewholeprocedure.Thenon-encryptedsensitivedataneverleavesuserlocalscopeorhigh-securedtrustedexecutionenvironment:SXGenclave.Hereisagenericdescriptionofthe3simplestepsofiExec’sSGXsolution.

动态 | 英特尔GDPR Edge将应用于北美杂货业:据cryptovest消息，美国咨询公司SPINS于周三发布声明称，由英特尔联合开发的基于区块链的消费者隐私服务GDPR Edge将在北美的食品杂货市场中使用。[2018/8/17]

Step1:Useronlyneedstorunonesimplecommandwhichallowstoautomatically:

Encryptuser’sinputdata

Pushtheencrypteddatatoaremotefilesystem(i.e.theremotefilesystemcanbeanypublicfilesharingserviceandenduserisfreetochoosehis/herpreferredone,pleasenotethatthisserviceisnotprovidedbyiExec)

Updaterelatedsessiondata(i.e.eachuser’striggeringoftheapplicationisasession)toaSGXbasedsecretmanagementservice.Secretmanagementservicecanbedeployedinaflexibleway:itcanbeatuser’sside,orscheduler’sside(i.e.SGXworkpool).

Step2:UsertriggersthetargetapplicationviasimpleclicksfromtheiExecDappstoreandmarketplaceviaauser-friendlyUIinterface.

OncethetargetapplicationistriggeredatremoteSGXdecentralizednode,theapplicationwillfirstlyautomaticallypulltheencrypteduserinputdatafromremotefilesystem(i.e.pushedinstep1);retrievethesecretkeyviasecuredSGXprovisionchannel,whichisthenusedtodecrypttheuserinputdata,thedecryptionisdoneonlyinsidethehigh-securedtrustedenvironment—SGXenclave;thedecrypteddatacanthenbeusedtofeedtheapplicationexecution,assoonastheapplicationresultisavailable,asignatureisprecededbasedontheprivatekeyprotectedinsidetheSGXenclave,whichcannotbeinspectedbytheoutsideworld.TheapplicationresultisfinallyencryptedandthentheiExec’sverificationprocedure(i.e.ProofofContribution)istriggered.EverythingissecurelyhappenedinsidetheIntelSGXenclaveensuredbyIntelhardwareCPUandnosecretisabletorevealedtotheoutsideworld.

英特尔申请利用区块链技术进行基因测序的专利:英特尔的一项新专利申请表明，他们正在研究如何利用加密货币挖矿过程中耗费的能源来进行基因测序。2016年6月该专利首次提交给美国专利局和商标局，并在本周四公布了申请中的专利详情。该专利描述了一种被称为序列挖掘平台（SMP）的计算机，该专利申请指出，SMP将使用核碱基测序单元来测定样品中核碱基的顺序，然后通过区块链技术对其验证，并永久的记录在区块链上。[2017/12/15]

Thesignatureisfinallytransferredtoon-chainnetworkandverifiedbyon-chainsmartcontractviatheregisteredcorrespondingpublickey.Ifthesignatureverificationpassesandapplicationresult’strustlevelachievesagiventhreshold.Theuserwillbeinformedtodownloadtheencryptedresult.

Thewholeprocedureisdoneautomaticallyinahighsecureway,andthisprocedureistriggeredbyonlysomesimpleclicksfromuserviathefriendlyUIinterface.

Fig.1iExec’sE2ESGXworkflow

Step3:Usercandownloadtheencryptedresultpackage,andusercanjustrunonesimplecommandtodecrypttheresult.Pleasenotethatonlytheuserwhotriggersthetask(i.e.SGXapplication)isabletodownloadtheencryptedresult,andonlytheuserownsthekeytodecrypttheapplicationresult.

Pleasenotethattheprocedureisplatformindependent,andthereforeiscompatiblewithdifferentoperatingsystems:Windows,Linux,MacOS.

Inthenearfuture,wewillfurthersimplifyuser’sprocedure—allthethreestepswillbeintegratedintoonesimplestep,andcanbedonebyseveralsimpleclicksfromuserviauserfriendlyuserinterface—https://market.iex.ec/.

2.TheiExecSolutionisSGXVendorAgnostic

TheiExecplatformisopentodifferentSGXsolutionvendors.Specifically,iExechasbeencollaboratingwithSCONEandFortanixtointegratetheirSGXframeworksintoiExec’sE2ESGXsolution.WearealsointhephaseofevaluatingIntel’sPDOframework.Inthefuture,wewillalsoconsidertheSGXframeworkofGraphene/Graphene-ng.AllthemainstreamSGXsolutionswillbe100%compatiblewithiExec’splatform,andwewillleaveiExecDappdevelopersanduserstofreelychoosetheirpreferredSGXframeworks.OurobjectistopromotetheemergenceofanecosystemwhichprovidestrustedexecutionforBlockchainbasedcomputing,andthesetrustedservicecanbemonetizedviaiExec’smarketplace.

3.iExecContributionstowardsIndustryStandardization

iExecarepioneersinthefieldofblockchain-basedTrustComputing,andisveryactiveinleadingandpushingforwardtheindustrialstandardizationforinthiscontextforBlockchaintechnology.

Especially:

iExecisveryactiveinEEA(EnterpriseEthereumAlliance):iExecischairingtheTrustedComputeWorkGroup,andkeepscontributingandpushingforwardtheEEAspecifications,especiallytheOff-chainTrustedComputeSpecificationwhichistobepubliclyreleasedsoon.

iExecisactiveinIEEEaswell.iExecismemberofIEEEP2418,andisinvolvedinIEEEstandardprojectonDLT-basedFederatedIdentity,CredentialandTrustManagement.iExecleadsthestandardizationworkinseveralBlockchainbaseddomains,especiallythesecurityandTEE(TrustedExecutionEnvironment)

iExeciscollaboratingwithhardwaretrustedexecutionvendorstomoveforwardthishardwarebasedsecuritysolution(SGX)tobefullystandard-compliant,staytunedforthecomingupdatesduringDevcon4.

iExecisalsocollaboratingwithourpartnerstomoveforwardthestandardizationforBlockchainbasedFogComputinginthecontextofOpenFogconsortium.SomeresultofthefirststagecollaborationwithourpartnersonFogComputingwillbereleasedsoon,pleasestaytunedinthefollowingdays.

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