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Differentially private data sharing in Cloud Federation with blockchain

Differentially private data sharing in Cloud Federation with blockchain
Differentially private data sharing in Cloud Federation with blockchain
Cloud federation is an emergent Cloud-computing paradigm that allows services from different Cloud systems to be aggregated in a single pool. To support
secure data-sharing in a Cloud federation, anonymisation services that obfuscate sensitive datasets under differential privacy have been recently proposed. However, by outsourcing data protection to the Cloud, data owners lose control over their data, raising privacy concerns. This is even more compelling in multi-query scenarios where maintaining privacy amounts to controlling the allocation of so-called privacy budget. In this paper we propose a
blockchain-based approach that enables data owners to control the nonymisation
process, and enhances the security of the services. Our approach relies on blockchain to validate the usage of privacy budget and adaptively change its allocation via smart contracts, depending on the privacy requirements provided by data owners. Prototype implementation with the Hyperledger permissioned blockchain validates our approach with respect to privacy guarantee and practicality.
69-79
Yang, Mu
9f619568-bfc7-44cf-b1b1-010e0b35eb68
Margheri, Andrea
4b87c32d-3eaf-445e-8ac0-8207daace2e1
Hu, Runshan
18986f90-49c4-430e-8047-3bf6b2be61c3
Sassone, Vladimiro
df7d3c83-2aa0-4571-be94-9473b07b03e7
Yang, Mu
9f619568-bfc7-44cf-b1b1-010e0b35eb68
Margheri, Andrea
4b87c32d-3eaf-445e-8ac0-8207daace2e1
Hu, Runshan
18986f90-49c4-430e-8047-3bf6b2be61c3
Sassone, Vladimiro
df7d3c83-2aa0-4571-be94-9473b07b03e7

Yang, Mu, Margheri, Andrea, Hu, Runshan and Sassone, Vladimiro (2018) Differentially private data sharing in Cloud Federation with blockchain. Cloud Computing Magazine, 5 (6), 69-79. (doi:10.1109/MCC.2018.064181122).

Record type: Article

Abstract

Cloud federation is an emergent Cloud-computing paradigm that allows services from different Cloud systems to be aggregated in a single pool. To support
secure data-sharing in a Cloud federation, anonymisation services that obfuscate sensitive datasets under differential privacy have been recently proposed. However, by outsourcing data protection to the Cloud, data owners lose control over their data, raising privacy concerns. This is even more compelling in multi-query scenarios where maintaining privacy amounts to controlling the allocation of so-called privacy budget. In this paper we propose a
blockchain-based approach that enables data owners to control the nonymisation
process, and enhances the security of the services. Our approach relies on blockchain to validate the usage of privacy budget and adaptively change its allocation via smart contracts, depending on the privacy requirements provided by data owners. Prototype implementation with the Hyperledger permissioned blockchain validates our approach with respect to privacy guarantee and practicality.

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Accepted/In Press date: 1 January 2018
e-pub ahead of print date: 29 November 2018

Identifiers

Local EPrints ID: 414815
URI: https://eprints.soton.ac.uk/id/eprint/414815
PURE UUID: 97368ffb-4cb9-4bef-af7a-094e8dbf7aa8
ORCID for Mu Yang: ORCID iD orcid.org/0000-0001-9442-9243
ORCID for Andrea Margheri: ORCID iD orcid.org/0000-0002-5048-8070
ORCID for Runshan Hu: ORCID iD orcid.org/0000-0002-5209-8850

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Date deposited: 11 Oct 2017 16:31
Last modified: 15 Aug 2019 00:58

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