earticle

영어

Web3 Internet structure has been widely investigated to support data sovereignty of individuals. In order to protect privacy of individuals, sensitive information within personal data needs to be hidden before disclosing it outside. One method hiding the sensitive information such as phone number and resident registration number is pseudonymization technology, which converts the sensitive information into a non-interpretable identifier. To connect securely the non-interpretable identifier to its data owner, the previous central system employs a single computer that stores the mapping table between the non-interpretable identifier and the connecting address of its owner. Because the previous system is vulnerable to internal and external attacks, this paper proposes a distributed system, in which multiple computers divide up the roles to perform the mapping. Evaluation verifies that the proposed system is robust against external and internal attacks. Although the execution time of the proposed systems is longer than that of the previous system, its difference is negligible.