Securely accessing encrypted cloud storage from multiple devices

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorTamrakar, Sandeep
dc.contributor.authorNguyen, Long
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.supervisorAsokan, Nadarajah
dc.date.accessioned2015-12-16T07:34:04Z
dc.date.available2015-12-16T07:34:04Z
dc.date.issued2015-12-14
dc.description.abstractCloud storage services like Dropbox, Google Drive and OneDrive are increasingly popular. They allow users to synchronize and access data from multiple devices. However, privacy of cloud data is a concern. Encrypting data on client-side before uploading it to cloud storage is an effective way to ensure data privacy. To allow data access from multiple devices, current solutions derive the encryption keys solely from user-chosen passwords which result in low entropy keys. In this thesis, we present OmniShare, the first scheme to allow client-side encryption with high-entropy keys combined with an intuitive key distribution mechanism enabling data access from multiple devices. It uses a combination of out-of-band channels and cloud storage as a communication channel to ensure minimal and consistent user actions during key distribution. Furthermore, OmniShare allows the possibility of reducing communication overhead for updating encrypted data. OmniShare is freely available on popular platforms.en
dc.format.extent97
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/19048
dc.identifier.urnURN:NBN:fi:aalto-201512165566
dc.language.isoenen
dc.programmeMaster's Programme in Mobile Computing - Services and Securityen
dc.programme.majorMobile Computing, Services and Securityen
dc.programme.mcodeSCI3045fi
dc.rights.accesslevelopenAccess
dc.subject.keywordcloud storageen
dc.subject.keywordkey distributionen
dc.subject.keywordencryptionen
dc.subject.keywordusabilityen
dc.subject.keywordsynchronizationen
dc.titleSecurely accessing encrypted cloud storage from multiple devicesen
dc.typeG2 Pro gradu, diplomityöen
dc.type.okmG2 Pro gradu, diplomityö
dc.type.ontasotMaster's thesisen
dc.type.ontasotDiplomityöfi
dc.type.publicationmasterThesis
local.aalto.idinssi52691
local.aalto.openaccessyes
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