A Secure Online Treatment Blockchain Service

Abstract

In the telecare medicine information system (TMIS), to acquire the medical data, the patients need to log in to the remote medical server. Usually, each hospital has its server and they would not like to share the data with other hospitals. However, the patients are likely to upload their data to the different medical servers. In this case, since the patients have to register for these medical servers, they will need to save many keys for these servers. Hence, it is inconvenient for the patients to use these data. Moreover, the data may be tampered or deleted by an attacker or malicious staff in hospitals. To resolve these problems, we use blockchain to design a privacy-preserving scheme for TMIS. We integrate cryptography (broadcast encryption and Merkle tree) to construct our scheme. Moreover, we utilize the provable security theory to prove the security of our scheme. The security analysis indicates that the proposed scheme achieves privacy protection for the patients.