A Secured Proxy-Based Data Sharing Module in IoT Environments Using Blockchain.

Clicks: 294
ID: 105883
2019
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Abstract
Access 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.
Reference Key
obour-agyekum2019asensors Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Obour Agyekum, Kwame Opuni-Boachie;Xia, Qi;Sifah, Emmanuel Boateng;Gao, Jianbin;Xia, Hu;Du, Xiaojiang;Guizani, Moshen;
Journal sensors
Year 2019
DOI
E1235
URL
Keywords
internet of things (iot) blockchain proxy re-encryption fine-grained access control attribute-based encryption (abe) inner-product encryption (ipe) cyber-security

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