基于环签名的医疗区块链隐私数据共享模型

Medical Blockchain of Privacy Data Sharing Model Based on Ring Signature

随着医疗行业信息化的推进,医疗领域已进入大数据时代,但在数据异构、互操作性和隐私保护等方面仍面临诸多挑战.针对上述问题,该文构建了基于环签名的去中心化医疗大数据共享模型.该模型基于区块链去中心化思想维护一个可靠的医疗数据账本,确保隐私数据的不可篡改.构建了基于环签名的隐私数据存储协议,利用其完全匿名性保障了医疗数据和病人身份隐私的安全性;提出了基于智能合约自动化执行预设指令的医疗信息严密访问控制管理机制,通过明确划分医疗隐私信息访问权限来保障医疗隐私数据的权威性和机密性.经安全性测试结果表明,相比于传统医疗大数据共享模式,该模型具有更好的实时性和鲁棒性.

With the progress of information development of medical industry, the medical field has got into the era of big data. However, it still faces many challenges in data heterogeneity, interoperability, and privacy protection. In response to the above problems, a decentralized medical big data sharing model based on ring signature is constructed. The model maintains a reliable medical ledger database based on the decoupling of blockchain, ensuring that the privacy data cannot be tampered. It constructs a private data storage protocol based on ring signature, which guarantees medical data and patient identity privacy with its full anonymity. We proposed a medical information strict access control management mechanism based on smart contract automation execution of preset instructions. The authority and confidentiality of medical privacy data are guaranteed by clearly dividing the access rights of medical privacy information. The safety test results show that the model has better real-time and robustness than the traditional medical big data sharing model.