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Smarter Data Availability Checks in the Cloud: Proof of Storage via Blockchain

Abadi, A; (2021) Smarter Data Availability Checks in the Cloud: Proof of Storage via Blockchain. In: George Wynn, M, (ed.) Handbook of research on digital transformation, industry use cases, and the impact of disruptive technologies. (pp. 320-339). IGI Global Green open access

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Abstract

Cloud computing offers clients flexible and cost-effective resources. Nevertheless, past incidents indicate that the cloud may misbehave by exposing or tampering with clients' data. Therefore, it is vital for clients to protect the confidentiality and integrity of their outsourced data. To address these issues, researchers proposed cryptographic protocols called “proof of storage” that let a client efficiently verify the integrity or availability of its data stored in a remote cloud server. However, in these schemes, the client either has to be online to perform the verification itself or has to delegate the verification to a fully trusted auditor. In this chapter, a new scheme is proposed that lets the client distribute its data replicas among multiple cloud servers to achieve high availability without the need for the client to be online for the verification and without a trusted auditor's involvement. The new scheme is mainly based on blockchain smart contracts. It illustrates how a combination of cloud computing and blockchain technology can resolve real-world problems.

Type: Book chapter
Title: Smarter Data Availability Checks in the Cloud: Proof of Storage via Blockchain
ISBN-13: 9781799877127
Open access status: An open access version is available from UCL Discovery
DOI: 10.4018/978-1-7998-7712-7.ch017
Publisher version: http://doi.org/10.4018/978-1-7998-7712-7.ch017
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10139107
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