Cross-domain authentication method based on medical alliance chain

According to the cross-domain authentication method based on the medical alliance chain, a block chain technology is utilized, a system framework of the medical alliance chain is designed, the framework does not need to depend on a third party, cross-domain authentication and key agreement are achieved through data storage and information interaction on the chain, resource sharing between different domains is facilitated, and user experience is improved. And the method has great benefits for cross-medical institution services. According to the method, the practical Byzantine algorithm and the share authorization proof algorithm are effectively combined to improve the system consensus efficiency and improve the throughput. 本发明提出了一种基于医疗联盟链的跨域认证方法，利用区块链技术，设计了医疗联盟链的系统框架，该框架无需依赖第三方，通过链上数据存储和信息交互实现跨域认证与密钥协商，有助于异域间的资源共享，对跨医疗机构服务具有巨大的益处。本发明有效结合实用拜占庭算法和股份授权证明算法以提高系统共识效率，提升吞吐量。