Design of Secure and Privacy-Preserving Data Sharing Scheme Based on Key Aggregation and Private Set Intersection in Medical Information System

Jihyeon Oh, Seunghwan Son, DeokKyu Kwon, Myeonghyun Kim, Yohan Park and Youngho Park ()
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Jihyeon Oh: School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
Seunghwan Son: School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
DeokKyu Kwon: School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
Myeonghyun Kim: School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
Yohan Park: School of Computer Engineering, Keimyung University, Daegu 42601, Republic of Korea
Youngho Park: School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea

Mathematics, 2024, vol. 12, issue 11, 1-23

Abstract: Medical data sharing is pivotal in enhancing accessibility and collaboration among healthcare providers, researchers, and institutions, ultimately leading to enhanced patient outcomes and more efficient healthcare delivery. However, due to the sensitive nature of medical information, ensuring both privacy and confidentiality is paramount. Access control-based data sharing methods have been explored to address these issues, but data privacy concerns still remain. Therefore, this paper proposes a secure and privacy-preserving data sharing scheme that achieves an equilibrium between data confidentiality and privacy. By leveraging key aggregate encryption and private set intersection techniques, our scheme ensures secure data sharing while protecting against the exposure of sensitive information related to data. We conduct informal and formal security analyses, including Burrow–Abadi–Needham logic and Scyther, to demonstrate its resilience against potential adversarial attacks. We also implement the execution time for cryptographic operations using multiprecision integer and a rational arithmetic cryptographic library and perform comparative analysis with existing related schemes in terms of security, computational cost, and time complexity. Our findings demonstrate a high level of security and efficiency, demonstrating that the proposed scheme contributes to the field by providing a solution that protects data privacy while enabling secure and flexible sharing of medical data.

Keywords: medical data sharing; key aggregate encryption; private set intersection; homomorphic encryption; mutual authentication (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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