Personal health record privacy protection and access system and method based on block chain

Abstract

The invention discloses a personal health record privacy protection and access system and method based on a block chain. The system comprises an alliance chain network, a patient module, a doctor module, an interstellar file system and a smart contract. In consideration of unconsciousness of a patient in an emergency, an encrypted private key of the patient is uploaded to a block chain in advance, a PHR document of the patient is encrypted by adopting an AES (Advanced Encryption Standard) technology and an RSA (Rivest Shamir Administration) technology, and a doctor re-encrypts the document by triggering an intelligent contract. The doctors in the access control list can decrypt the corresponding PHR documents through own private keys, and meanwhile, the block chain records the behaviors of the visitors; and in order to accelerate a doctor to acquire data, a quick response code is designed to store basic information of a patient, and the doctor directly applies for accessing the data according to the basic information of the patient by scanning the code. In addition, the Bloom filter is adopted to accelerate identity authentication of the doctor, and it is guaranteed that the doctor can accurately and rapidly access personal health information of the patient.

Description

technical field [0001] The present invention relates to the technical field of information access, in particular to a blockchain-based personal health record privacy protection and access system and method. Background technique [0002] A Personal Health Record (PHR) is each patient's personal and valuable asset. If doctors obtain the patient's PHR before diagnosis, they will be able to treat them more precisely. Normally, the patient can handle the doctor's access request, only allowing the attending doctor to access the PHR, and denying illegal access; but in an emergency, the patient is unconscious, and the doctor needs to quickly access the patient's data and record the visitor's behavior to protect Patient Privacy. In order to protect the privacy of patients, all operation behaviors of visitors and data storage are recorded through blockchain. In essence, the blockchain is a shared database. The data stored in it has the properties of "unforgeable", "retaining traces...

AI Technical Summary

Problems solved by technology

The above technical solution does not consider the patient's unconsciousness while realizing the privacy protection of the patient's personal health information. The patient needs to inform the doctor of the identification code when seeing a doctor and authorize the doctor, so that the doctor has the right to access the data. , so there is no way to design a doctor to quickly pass the certification

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