Secured Health Care Information exchange on cloud using attribute based encryption

Personal health record (PHR) is an emerging patient-centric model of health information exchange, which is often outsourced to be stored at a third party, such as cloud providers. This leads to address the privacy issues i.e., hide the sensitive health information of a patient, as the information can be accessible to unauthorized parties because of the nature of the storage. This paper describes novel patient-centric secure data sharing framework for cloud-based PHR systems. The paper is to create Health Care Information (HCIs) that are efficient and secure. HCIs can be stored in a third party cloud. The patients, who have created their profiles in the system, make their own HCIs, mentioning their disease, symptoms and other sufficient details. The doctors who are also a part of the system attend to the queries of the patients that have been updated in the cloud. The doctors´ prescription is updated by the admin of the system, whereas the cloud admin has no access to the data. The level of encryption is considered before generating the encryption key. The record is then accessed using the key that the admin has generated. The health care services can look up to the user details. The details of the secured information remains encrypted, whereas the other details remain as updated.