ION:英特尔SGX和区块链安全：iExec的端到端解决方案

点击蓝字关注我们

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。

敬请关注！

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.

英特尔执行长基辛格：芯片制造设备交货时间已大幅拉长:5月25日消息，英特尔执行长基辛格23日在达沃斯世界经济论坛（WEF）场边受访时表示，芯片短缺问题预料将持续到2024年。他也警告，半导体短缺问题同时造成先进芯片制造设备也供不应求，可能阻碍全球晶片产能的扩张计划。他说，新晶圆厂的芯片制造设备交货时间，已相当大幅度地拉长。他认为当前扩增产能的最重要壅塞点，是芯片制造设备的供应。（财联社）[2022/5/25 3:39:46]

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.

欧盟内部市场委员：英特尔将很快宣布在欧洲建立大型芯片工厂:11月27日，欧盟内部市场委员布雷顿表示，英特尔将很快宣布在欧洲建立大型芯片工厂。欧盟将像美国和日本一样，给予半导体制造商同样的支持，欧盟的规则令半导体制造商得到支持。（金十）[2021/11/27 12:35:53]

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.

英特尔的新GPU产品未限制加密货币挖矿功能:10月12日消息，芯片制造商英特尔（Intel）的客户端图形产品和解决方案集团总经理Roger Chandler在接受Gadgets360采访时表示，英特尔正在设计的Arc和炼金术士（Alchemist）系列GPU产品没有任何专门针对矿工的功能，不会限制加密货币挖矿。

此前报道，今年6月份另一家芯片制造商英伟达宣布在其RTX30系列的所有显卡上添加了Lite Hash Rate算法，该算法可在显卡运行时检测是否为挖矿算法，如果被检测到显卡用于挖矿，则会将显卡的计算能力降低一半。[2021/10/12 20:23:56]

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.

John McAfee称英特尔公司起诉其使用“GhostbyMcAfee”名称:John McAfee 7月23日发布推文称，英特尔公司正在起诉他使用“GhostbyMcAfee”这个名字。据悉，McAfee是第一批杀软件的创始人之一，英特尔在2010年收购了McAfee公司。英特尔此举似乎是对 McAfee自己的隐私币公司和杀公司使用同一“McAfee”名称感到不满。[2020/7/23]

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.

动态 | 英特尔SGX被突破 部分区块链项目受影响:根据coindesk报道，英特尔芯片SGX部分被发现致命漏洞，研究人员找到一种办法可以突破保护从而篡改数据。而一些数字货币项目已经有意使用该硬件来进行安全防护。不过好消息是研究人员在发现后通知了英特尔，而英特尔已经找到一种解决方案，但升级并未全部完成。比特币的核心维护者Wladimir van der Laan回应说:“即使比特币在某种程度上是完美的，但将比特币的安全性根植于芯片供应商某项技术中也绝不是个好主意。”[2018/8/16]

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.

长按扫码关注公众号

点“阅读原文”了解更多

标签：THEIONANDICAether币对人民币汇率Mission HeliosshowhandQubitica

Pol币热门资讯