【Author】
Sun, Weiqing; Sun, Jiatai; Wang, Xiaohui; Sun, Junling; Chai, Yunzhou; Wang, Lihua
【Abstract】In order to enhance the security and throughput of medical records storage system, a model using an improved H-Algorand consensus mechanism with credibility assessment is proposed. In this study, the model applies blockchain technology to realize distributed storage and privacy protection of medical data. To ensure the effective operation of the blockchain system, a credibility assessment algorithm is used to obtain the trust value of each medical institution node, and replaces the account balances in the H-Algorand consensus mechanism with the trust value as the node weight. Meanwhile, this paper designs a privacy protection scheme, through the searchable encryption algorithm and asymmetric encryption algorithm to achieve system data storage and sharing. Compared with the existing medical record storage model, the proposed model has higher security and throughput efficiency.
【Keywords】Blockchains; Medical diagnostic imaging; Security; Throughput; Mathematical models; Data privacy; Data models; Blockchain; electronic medical records; credibility assessment; H-Algorand consensus mechanism
【标题】一种改进的具有可信度评估的 H-Algorand 共识机制应用于 EMR 存储系统
【摘要】为了提高病历存储系统的安全性和吞吐量，提出了一种使用改进的H-Algorand共识机制和可信度评估的模型。在本研究中，该模型应用区块链技术实现医疗数据的分布式存储和隐私保护。为保证区块链系统的有效运行，采用可信度评估算法获取各医疗机构节点的信任值，并将H-Algorand共识机制中的账户余额替换为信任值作为节点权重。同时，本文设计了一种隐私保护方案，通过可搜索加密算法和非对称加密算法实现系统数据的存储和共享。与现有的病历存储模型相比，该模型具有更高的安全性和吞吐效率。
【关键词】区块链；医学诊断成像；安全;吞吐量；数学模型；数据隐私；数据模型；区块链；电子病历；可信度评估； H-Algorand 共识机制
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