ECC Based Secure Sharing of Healthcare Data in the Health Cloud Environment

In today's world, Cloud computing based health cloud is an effective platform for enhancing e-health productivity, i.e., healthcare professionals can provide medical service by accessing health information on any device in any location at any time. The major challenge faced by a healthcare organization is secure sharing of healthcare data in health cloud among general practitioner, medical services, and insurance firms. In order to overcome this issue, the security of sensitive healthcare data is accomplished with encryption mechanisms. In this research work, the medical data files are encrypted using elliptic curve cryptography algorithm to possess confidentiality and integrity in the healthcare data while sharing data via health cloud. The experimental results exhibits better performance in terms of key generation time, turn-around time, file encryption time, file decryption time, file upload time, file download time, file uploading speed, as well as security overhead. Furthermore, it also securely transmits the healthcare data over health cloud by defending against insider threats.