Ding Xujie, Liu Yali, Ning Jianting, Chen Dongdong
IEEE J Biomed Health Inform. 2025 Mar 19;PP. doi: 10.1109/JBHI.2025.3550261.
In recent years, cloud computing has seen widespread application in 6G-enabled smart healthcare, which facilitates the sharing of medical data. Before uploading medical data to cloud server, numerous data sharing schemes employ attribute-based encryption (ABE) to encrypt the sensitive medical data of data owner (DO), and only provide access to date user (DU) who meet certain conditions, which leads to privacy leakage and single points of failure, etc. This paper proposes a blockchain-enhanced anonymous data sharing scheme for 6G-enabled smart healthcare with distributed key generation and policy hiding, termed BADS-ABE, which achieves secure and efficient sharing of sensitive medical data. BADS-ABE designs an anonymous authentication scheme based on Groth signature, which ensures integrity of medical data and protects the identity privacy of DO. Meanwhile, BADS-ABE employs smart contract and Newton interpolation to achieve distributed key generation, which eliminates single point of failure due to the reliance on trusted authority (TA). Moreover, BADS-ABE achieves policy hiding and matching, which avoids the waste of decryption resources and protects the attribute privacy of DO. Finally, security analysis demonstrates that BADS-ABE meets the security requirements of a data sharing scheme for smart healthcare. Performance analysis indicates that BADS-ABE is more efficient compared with similar data sharing schemes.
近年来，云计算在支持6G的智能医疗保健中得到了广泛应用，这促进了医疗数据的共享。在将医疗数据上传到云服务器之前，许多数据共享方案采用基于属性的加密（ABE）来加密数据所有者（DO）的敏感医疗数据，并且只向符合特定条件的数据用户（DU）提供访问权限，这导致了隐私泄露和单点故障等问题。本文提出了一种用于支持6G的智能医疗保健的区块链增强型匿名数据共享方案，该方案具有分布式密钥生成和策略隐藏功能，称为BADS-ABE，它实现了敏感医疗数据的安全高效共享。BADS-ABE设计了一种基于Groth签名的匿名认证方案，该方案确保了医疗数据的完整性并保护了DO的身份隐私。同时，BADS-ABE采用智能合约和牛顿插值法来实现分布式密钥生成，消除了因依赖可信机构（TA）而导致的单点故障。此外，BADS-ABE实现了策略隐藏和匹配，避免了解密资源的浪费并保护了DO的属性隐私。最后，安全性分析表明BADS-ABE满足智能医疗保健数据共享方案的安全要求。性能分析表明，与类似的数据共享方案相比，BADS-ABE更高效。
