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AuthorObour Agyekum K.O.-B.
AuthorXia Q.
AuthorSifah E.B.
AuthorGao J.
AuthorXia H.
AuthorDu X.
AuthorGuizani M.
Available date2020-04-16T06:56:47Z
Publication Date2019
Publication NameSensors (Basel, Switzerland)
ResourceScopus
ISSN14248220
URIhttp://dx.doi.org/10.3390/s19051235
URIhttp://hdl.handle.net/10576/14228
AbstractAccess and utilization of data are central to the cloud computing paradigm. With the advent of the Internet of Things (IoT), the tendency of data sharing on the cloud has seen enormous growth. With data sharing comes numerous security and privacy issues. In the process of ensuring data confidentiality and fine-grained access control to data in the cloud, several studies have proposed Attribute-Based Encryption (ABE) schemes, with Key Policy-ABE (KP-ABE) being the prominent one. Recent works have however suggested that the confidentiality of data is violated through collusion attacks between a revoked user and the cloud server. We present a secured and efficient Proxy Re-Encryption (PRE) scheme that incorporates an Inner-Product Encryption (IPE) scheme in which decryption of data is possible if the inner product of the private key, associated with a set of attributes specified by the data owner, and the associated ciphertext is equal to zero 0 . We utilize a blockchain network whose processing node acts as the proxy server and performs re-encryption on the data. In ensuring data confidentiality and preventing collusion attacks, the data are divided into two, with one part stored on the blockchain network and the other part stored on the cloud. Our approach also achieves fine-grained access control.
Languageen
PublisherNLM (Medline)
SubjectAttribute-Based Encryption (ABE)
blockchain
cyber-security
fine-grained access control
Inner-Product Encryption (IPE)
Internet of Things (IoT)
proxy re-encryption
TitleA Secured Proxy-Based Data Sharing Module in IoT Environments Using Blockchain
TypeArticle
Issue Number5
Volume Number19
dc.accessType Open Access


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