D. Patient Health Information receiving and storing
Patient Alice’s PHI is transferred to the EHR data center.
When EHR data center receives the cipher text C, firstly it uses
its own private key to decrypt the message and verify the
legitimate identity of Alice. The message stored in the EHR
data center is the cipher text C=IBCQEHR(IDA||m||IDB) encrypted
with the private key of the health monitoring server. Only
doctor Bob can access Alice’s health message