Abstract
With the features of decentralization and trustlessness and through distributed data storage, point-to-point transmission, and encryption algorithms, blockchain has shed new light on the security and protection of medical data, and it can resolve the contradiction between data sharing and privacy protection with proper security strategies. In this paper, we integrate the strengths of both blockchain and cloud computing and build the privacy protection scheme for medical data based on blockchain and cloud computing. This scheme introduces cloud computing and provides services to blockchain nodes with cloud server computing; meanwhile, it collects, analyzes, processes, and maintains medical data in the identity authentication interface and solves the insufficient computing abilities of some nodes in blockchain so as to verify the authenticity and reliability of data. The simulation experiment proves that the proposed scheme is effective. It can achieve the secure protection and integrity verification of medical data and address the problems of high computing complexity, data sharing, and privacy protection.
Highlights
Intelligent hospitals are having increasing demands for information security, and it has become extremely urgent to protect personal private data of patients
The special contributions of this paper include the following: (i) Aiming at data sharing and patient privacy protection of intelligent hospitals, we explore in-depth conventional encryption methods, proxy reencryption, attributed-based encryption, and so forth
We investigate how to apply blockchain and cloud computing technology in intelligent medical scenarios (ii) To overcome the highly complex computation brought by encryption, we adopt the proxy reencryption method and attribute-based encryption (ABE) method to provide a specific access control mechanism to users and design the data sharing and replacement and privacy protection rule participated by the cloud service side (iii) We propose a distributed medical data privacy protection scheme, bring in a cloud computing pattern, and designed blockchain-based distributed data management architecture to strengthen the computing power of the user side
Summary
Intelligent hospitals are having increasing demands for information security, and it has become extremely urgent to protect personal private data of patients. For the sake of data security and personal privacy protection of patients, some medical establishments need to encrypt the data in advance to form ciphertexts They need other medical institutions to share certain ciphertexts frequently and prevent anyone (including cloud service providers) from cracking these data ciphertexts. In blockchain and cloud computing, the combination of decentralization and tamper-proofing of blockchain with the nodes of distributed cloud computing can help health institutions to carry out security and privacy protection of patient data at a lower cost and achieve data interaction among medical organizations. These will have a profound impact on the development of future healthcare industry.
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