Title: SDS-GS: a short group signature scheme enabling controlled traceability in secure medical data sharing

Authors: Xiaohui Yang; Xu Zhang

Addresses: School of Cyber Security and Computer, Hebei University, Baoding, China ' School of Cyber Security and Computer, Hebei University, Baoding, China

Abstract: With the digitisation of information, the sharing of patient data in healthcare has increased dramatically, raising significant privacy concerns. We introduce a reliable dynamic group signature scheme for secure medical data sharing, ensuring secure and efficient data exchange and the identification of dishonest users. Our scheme also limits data managers' retrospective rights to prevent abuse. Security analysis demonstrates robust security and anonymity, while performance evaluations show high efficiency in healthcare data-sharing scenarios. Compared to other schemes, our scheme provides additional features such as privacy protection and secret sharing verification, and has higher scalability.

Keywords: group signatures; medical data sharing; controlled traceability; privacy protection.

DOI: 10.1504/IJICS.2025.148453

International Journal of Information and Computer Security, 2025 Vol.28 No.1, pp.73 - 102

Received: 17 Mar 2024
Accepted: 05 Jul 2024
Published online: 05 Sep 2025 *

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