At present, the existing databases in medical institutions are characterized by singularity and centralization in storage methods. This makes it difficult to guarantee the security, integrity, and traceability of elec...
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ISBN:
(纸本)9798331533694
At present, the existing databases in medical institutions are characterized by singularity and centralization in storage methods. This makes it difficult to guarantee the security, integrity, and traceability of electronic medical data, thus posing a threat to patients' medical privacy. Although some studies have proposed data security storage solutions based on cloud storage and the like, such solutions rely on a completely trustworthy third-party to ensure the reliability of interactions. To address the above-mentioned problems, this paper proposes a decentralized health management data storage mechanism by integrating blockchain technology based on the improved PBFT consensus algorithm. This mechanism uses the improved PBFT consensus algorithm and the optimized Hash encryption algorithm to securely and effectively store health management data in a distributed database, ensuring the integrity and traceability of the data. At the same time, a new data interaction system is designed to prevent direct interaction between the third-party and the database, preventing untrustworthy third-parties from maliciously damaging the data and ensuring data security. In addition, through access control and the Lucene retrieval mechanism, patient privacy is protected and rapid retrieval of health management data is achieved. Experimental analysis shows that compared with algorithms such as Proof of Work (POW) and Delegated Proof of Stake (DPOS), the improved PBFT consensus algorithm endows the medical blockchain system with better stability and throughput. Compared with the ordinary database interaction method, the designed data interaction system effectively prevents direct operations on the database and has good security and anti-tampering properties. Experimental data indicates that the decentralized health management data storage system constructed by integrating blockchain technology based on the improved PBFT consensus algorithm realizes the secure storage, traceability, an
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