Olympus: a GDPR compliant blockchain system
Blockchain has been gaining significant interest in several domains. However, this technology also raises relevant challenges, namely in terms of data protection. After the General Data Protection Regulation (GDPR) has been published by the European Union, companies worldwide changed the way they pr...
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| Published in | International journal of information security Vol. 23; no. 2; pp. 1021 - 1036 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.04.2024
Springer Nature B.V |
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| Online Access | Get full text |
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| Abstract | Blockchain has been gaining significant interest in several domains. However, this technology also raises relevant challenges, namely in terms of data protection. After the General Data Protection Regulation (GDPR) has been published by the European Union, companies worldwide changed the way they process personal data. This project provides a model and implementation of a blockchain system to store personal data complying with GDPR. We examine the advantages and challenges and evaluate the system. We use Hyperledger Fabric as blockchain, Interplanetary File System to store personal data off-chain, and a Django REST API to interact with both the blockchain and the distributed file system. Olympus has three possible types of users: Data Subjects, Data Processors and Data Controllers and a fourth participant, Supervisor Authority, that, despite not being an explicit role, can perform all verifications that GDPR mandates. We conclude that it is possible to create a system that overcomes the major challenges of storing personal data in a blockchain (Right to be Forgotten and Right to Rectification), while maintaining its desirable characteristics (auditability, verifiability, tamper resistance, distributed—remove single points of failure) and complying with GDPR. |
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| AbstractList | Blockchain has been gaining significant interest in several domains. However, this technology also raises relevant challenges, namely in terms of data protection. After the General Data Protection Regulation (GDPR) has been published by the European Union, companies worldwide changed the way they process personal data. This project provides a model and implementation of a blockchain system to store personal data complying with GDPR. We examine the advantages and challenges and evaluate the system. We use Hyperledger Fabric as blockchain, Interplanetary File System to store personal data off-chain, and a Django REST API to interact with both the blockchain and the distributed file system. Olympus has three possible types of users: Data Subjects, Data Processors and Data Controllers and a fourth participant, Supervisor Authority, that, despite not being an explicit role, can perform all verifications that GDPR mandates. We conclude that it is possible to create a system that overcomes the major challenges of storing personal data in a blockchain (Right to be Forgotten and Right to Rectification), while maintaining its desirable characteristics (auditability, verifiability, tamper resistance, distributed—remove single points of failure) and complying with GDPR. |
| Author | Gonçalves, Ricardo Martins da Silva, Miguel Mira da Cunha, Paulo Rupino |
| Author_xml | – sequence: 1 givenname: Ricardo Martins orcidid: 0000-0002-0760-6270 surname: Gonçalves fullname: Gonçalves, Ricardo Martins email: ricardo.martins.goncalves@tecnico.ulisboa.pt organization: Instituto Superior Técnico, University of Lisbon – sequence: 2 givenname: Miguel Mira orcidid: 0000-0002-0489-4465 surname: da Silva fullname: da Silva, Miguel Mira organization: Instituto Superior Técnico, University of Lisbon – sequence: 3 givenname: Paulo Rupino orcidid: 0000-0003-2701-5248 surname: da Cunha fullname: da Cunha, Paulo Rupino organization: Faculty of Science and Technology, University of Coimbra |
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