SDS-GS: a short group signature scheme enabling controlled traceability in secure medical data sharing
Xiaohui Yang, Xu Zhang · International Journal of Information and Computer Security · 2025
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.