




版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
VerifiableAB-PREforSecurePublicCloudDataSharingContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions02ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions03DataStoragePrivacyIntactnessApplicabilityAccessControlLargeServersThinClients
Achievingdataprivacyandfine-grainedaccesscontrol.Applyingtothinclients.Updatingtheaccesscontrol.Tosolvethefollowingissues:Introduction04ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions05ORANDBobUnionHospitalChiefPhysiciansEncryption:Specifythequalifiedusersbyanaccesspolicyorasetofattributes.Keygeneration:Associatedwithusers’attributecharacteristic.Decryption:Accomplishedonlyifattributesandtheaccesspolicyarematched.UserAUserB
UnionHospitalChiefPhysician
BobAttribute-basedEncryption(ABE)06ORANDBobUnionHospitalUserAUserB
BobAttribute-basedEncryption(ABE)
UnionHospitalChiefPhysician
Bobisinanemergency.AlltheChiefPhysiciansareunavailable.Scenario:ChiefPhysiciansHowtoderiveBob’smedicalrecords?MedicalRecords07ProxyRe-encryption(PRE)UserAUserBProxy
Theproxycannotseetheplaintext.TheproxycannotderivethesecretkeyofUserA.SecurityRequirements:08Attribute-basedPRE(AB-PRE)
Updatingaccesscontrolfromdelegation.Theproxycannotderivetheplaintextandtheprivatekey.AB-PREisdividedintoCP-AB-PREandKP-AB-PRE.09Attribute-basedPRE(AB-PRE)
Liangetal.(ASIACCS’09):ThefirstCP-AB-PRE.Luoetal.(ICICS’10):CP-AB-PREwithmulti-valuepositiveattributes.Yuetal.(INFOCOM’10):KP-AB-PREforuserrevocation.Yuetal.(ASIACCS’10):CP-ABE-PREforattributerevocationbutnotcollusionresistant.Liangetal.(FGCS2014):CCAsecureCP-AB-PREbasedonLSSS.Liangetal.(TIFS2015):CCAsecuresearchableKP-AB-PREintherandomoraclemodel.Assumingtheproxyissemi-trusted!10ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions11Non-interactiveVerifiableComputation
Gennaroetal.(Crypto’10):VerifyingarbitrarydelegatingcomputationbasedonaFHEscheme.Chungetal.(Crypto’10):ImprovedGennaroetal’sscheme.Parnoetal.(TCC’12):PublicdelegationandpublicverifiabilityfromABEschemes.Goldwasseretal.(Eprint’12):Publicverifiableandsecretdelegatingcomputationforgeneralfunctions.Notsufficientlyefficientandimpractical!12VerifiableOutsourcedComputationforABEGreenetal.(USENIX’11):OutsourcingthedecryptionofABEbykeyblindingtechnique.Laietal.(TIFS2013):VerifiableoutsourceddecryptionforABEwhichdoublesthecomputationandcommunicationcostscomparedtotheunderlyingABEscheme.Linetal.(TIFS2015):GenericconstructionofVO-ABEwheretheinstantiationimprovedtheefficiencyofLaietal.’sscheme.13Disadvantage:Exposureofthekeyblindingfactordirectlyrevealstheprivatekey.ApplyingtoAB-PRE?ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions14VerifiableAttribute-basedPRE(AB-VPRE)
Updatingaccesscontrolfromdelegation.Theproxycannotderivetheplaintextandtheprivatekey.AB-PREisdividedintoCP-AB-PREandKP-AB-PRE.Verification15ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions16OurTechniques
CombiningacommitmentschemeandaKDFduringtheencryption.Verificationincludestwosteps:(1)Invarianttest;(2)Correctdetection.Ourtechniques:Theproxyisuntrusted!Verification17ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREOutlineofourconstructionAlgorithmdescriptions1819AB-KEMSKE+CommitmentKDFKEMDEM+VerifiabilityOutlineofOurConstructionSKRKAB-PREABEKeyblindingmultiplierNewaccesspolicy/attributessetABE20AB-KEMSKE+CommitmentKDFKEMDEM+VerifiabilitySKRKABEKeyblindingmultiplierNewaccesspolicy/attributesetCTRKCT’ProxyAB-PREABEOutlineofOurConstruction21CTRKCSSRCS(proxy)CTCT’CT’Ver:1Ver:2Ver:1CheckingfortheinvariantcomponentsofCT.Ver:2ExaminingthecalculationcorrectnessofCT’.AB-VPREOutlineofOurConstruction22AB-KEMSKE+CommitmentKDFKEMDEM+VerifiabilityEncryptionProxyRe-encryptionDecryptionKeyblindingAccesscontrolUpdateVerificationOutlineofOurConstructionContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREOutlineofourconstructionAlgorithmdescriptions2324AB-KEMSKE+CommitmentKDFKEMDEM+VerifiabilityEncSK=(K,L)RK=(K,L’,Enc’(D,I’_enc))RKGenABEKeyblindingmultiplierDNewaccesspolicy/attributesetREncCT_{I_enc}CT_{I’_enc}RKAlgorithmDescriptions25Ver2+RDecCT_{I_enc},CT_{I’_enc}b=0orb=1?Ver:1⊥b=0RDec(SK’,CT_{I’_enc},b)b=1Pass?⊥NoVer:2MYesVer1AlgorithmDescriptionsContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPRESecurityanalysis
Dataprivacyandverificationsoundness.
WeakMasterkeysecurity.2627SemanticallysecureComputationalhiding+bindingIND-CPAKDFsecureIND-CPA+VerificationSoundnessSecurityAnalysisforAB-VPREAB-KEMSKECommitment
Dataprivacyandverificationsoundness.AB-VPRE28SecurityAnalysisforAB-VPRE
WeakMasterkeysecurity.SelectivelyWeakMasterKeySecuritySelectivelyIND-CPACDHAssumptionAB-VPRENote:ExposureofthekeyblindingmultiplierprovidesnohelpforrevealingtheprivatekeyduetotheCDHAssumption.ContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions2930AB-KEMOne-timepad+PedersenCommitmentKDFKEMDEM+VerifiabilityInstantiationsofAB-VPRESchemesAB-KEMAccesspolicyAB-VPRE-1CP(Liang’09)Non-monotonicAB-VPRE-2CP(Waters’11)LSSSAB-VPRE-3KP(Goyal’06)LSSSContentsIntroductionVerifiableattribute-basedPRE(AB-VPRE)ABE,PRE,AB-PREVerifiableoutsourcedcomputationOurtechniquesOurconstructionofAB-VPREInstantiationsSecurityanalysisAdvantagesofourAB-VPREschemesConclusions3132AdvantagesofOurAB-VPRESchemesFunctionsRe-encryptionverifiability(non-interactive)Accesscontrolupdatefromuntrustedprox
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 基于人工智能的2025年互联网医疗平台在线问诊疾病预测与健康管理报告
- 工业互联网区块链智能合约安全与隐私保护技术研究报告
- 工业互联网平台网络安全态势感知技术2025年网络安全态势感知技术行业应用案例分析报告
- 文旅融合与乡村旅游产业链整合创新策略:2025年行业深度分析报告
- 开放银行生态构建2025年合作模式创新与技术创新融合深度报告
- 2025年江苏省扬州市邗江区中考数学第二次适应性练习试卷
- 农村电商农产品上行模式创新与品牌知名度提升2025年研究
- java 开发算法面试题及答案
- icu考试试题及答案
- 工业互联网平台同态加密技术在智慧城市安全防护中的应用研究报告
- 借款分期付款协议书
- 2025届陕西省高三新高考全真模拟政治试题(原卷版+解析版)
- 南京2025年南京市市场监督管理局所属事业单位招聘编外笔试历年参考题库附带答案详解
- 护理员晨晚间护理课件
- 基站拆除合同协议书
- 降本增效理念在建筑中的应用试题及答案
- 2025贵州中考:政治必考知识点
- 心率变异性与情绪状态的相关性-洞察阐释
- 门面房赠予合同协议
- 女性更年期保健
- 2025届湖北省示范中学高考冲刺押题(最后一卷)英语试卷含答案
评论
0/150
提交评论