Improved proxy re-encryption schemes with applicati-USB迷|专注于互联网分享

2024年3月16日发(作者：营向真)

ImprovedProxyRe-encryptionSchemeswith

ApplicationstoSecureDistributedStorage

GIUSEPPEATENIESE

TheJohnsHopkinsUniversity

KEVINFU

UniversityofMassachusetts,Amherst

MATTHEWGREEN

TheJohnsHopkinsUniversity

and

SUSANHOHENBERGER

MassachusettsInstituteofTechnology

In1998,Blaze,Bleumer,andStrauss(BBS)proposedanapplicationcalledatomicproxy

re-encryption,inwhichasemitrustedproxyconvertsaciphertextforAliceintoaciphertextfor

ictthatfastandsecurere-encryptionwillbe-

comeincreasinglypopularasamethodformanagingencryptedﬁghefﬁciently

computable,thewide-spreadadoptionofBBSre-encryptionhasbeenhinderedbyconsiderable

ingrecentworkofDodisandIvan,wepresentnewre-encryptionschemes

thatrealizeastrongernotionofsecurityanddemonstratetheusefulnessofproxyre-encryption

asamethodofaddingaccesscontroltoasecureﬁmancemeasurementsofour

experimentalﬁlesystemdemonstratethatproxyre-encryptioncanworkeffectivelyinpractice.

CategoriesandSubjectDescriptors:H.3.4[InformationStorageandRetrieval]:Systemsand

Software—Distributedsystems;E.3[DataEncryption]:PublicKeyCryptosystems

GeneralTerms:Security,Algorithms

AdditionalKeyWordsandPhrases:Proxyre-encryption,doubledecryption,keytranslation,

bilinearmaps

UCTION

Proxyre-encryptionallowsaproxytotransformaciphertextcomputedunder

Alice’spublickeyintoonethatcanbeopenedbyBob’re

Authors’addresses:se,;DepartmentofComputerScience;TheJohnsHopkins

University;sSt.;Baltimore,MD21218;;DepartmentofComputerScience;

140GovernorsDrive;UniversityofMassachusetts;Amherst,MA01003-9264;erger;

ComputerScienceandArtiﬁcialIntelligenceLaboratory;MassachusettsInstituteofTechnology;

32VassarSt.;Cambridge,MA02139.

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