A Controllable Secure Blockchain-Based Electronic Healthcare Records Sharing Scheme

Table 1

The definition of EHR abstracts.

Field name	Description
H_Name	The name of the hospital or other kind of medical institution
Keywords	Keywords of the EHR, which are important search indexes
P_ID	The user ID of the patient
P_PKey	The public key of the patient, which is used to encrypt the EHR file address
D_ID	The user ID of the doctor
D_PKey	The public key of the doctor, which is used to decrypt the signature
Signature	The signature of the doctor, which is used to validate the EHR abstract
H_Address	EHR hash-valued file addresses in IEFS, which are encrypted by P_Pkeys and taken as indexes and validation keys of EHR files