Implementing GDPR-Compliant Surveys Using Blockchain

Author:

Martins Gonçalves Ricardo12ORCID,Mira da Silva Miguel12ORCID,Rupino da Cunha Paulo3ORCID

Affiliation:

1. Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal

2. INOV INESC Inovação, R. Alves Redol 9, 1000-029 Lisbon, Portugal

3. Department of Informatics Engineering, Faculty of Science and Technology, University of Coimbra, R. Sílvio Lima, Pólo II da Universidade de Coimbra, 3030-790 Coimbra, Portugal

Abstract

The immutability of data stored in a blockchain is a crucial pillar of trust in this technology, which has led to its increasing adoption in various use cases. However, there are situations where the inability to change or delete data may be illegal. European Union’s General Data Protection Regulation (GDPR)—applying to any company processing personal data from European citizens—explicitly entitles individuals to the right to rectification and the right to be forgotten. In this paper, we describe the design of a system to deploy and process survey data in a GDPR-compliant manner. It combines an Hyperledger Fabric blockchain to ensure that data cannot be tampered with and InterPlanetary File Systems (IPFS) for storage. With the proposed arrangement, we reap several security benefits enabled by blockchain’s immutability without running afoul of the regulations. Furthermore, the proof-of-concept is generic and can easily be adapted to various domains.

Publisher

MDPI AG

Subject

Computer Networks and Communications

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4. An effective cloud computing model enhancing privacy in cloud computing;Information Security Journal: A Global Perspective;2024-01-25

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