Unit:
Κατεύθυνση / ειδίκευση Θεωρητική Πληροφορική (ΘΕΩ)Πληροφορική
Supervisors info:
Άγγελος Κιαγιάς, Αναπληρωτής Καθηγητής, Πληροφορικής και Τηλεπικοινωνιών, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθήνων
Original Title:
Λογοδοτούμενη επεξεργασία δεδομένων που διατηρεί την ιδιωτικότητα μέσω κατανεμημένων μητρώων
Translated title:
Αccountable and privacy preserving data processing via distributed ledgers
Summary:
Data are gathered constantly, grow exponentially, and are considered a
valuable asset. The need for extensive analysis has emerged by various
organizations and researchers. However, they can be sensitive, private,
and protected by privacy disclosure acts making data processing by
third-parties almost impossible. We propose a protocol for data processing
where data controllers can register their datasets and entities can
request data processing operations by data processors. A distributed
ledger is used as the controller of the system serving as an immutable
history log of all actions taken by the participants. The blockchain-based
distributed ledger provides data accountability, auditability and
provenance tracking. We also use a Zero Knowledge Verifiable Computation
scheme where a data processor is enforced to produce a proof of
correctness of computation without revealing the dataset itself that the
requestor verifies. This records the fact that correct processing has
taken place without disclosing any information about the data.
Main subject category:
Science
Keywords:
distributed ledger, accountability, privacy preserving, data processing, zero knowledge proofs
Number of references:
181
