A Survey on Data privacy and preservation using Blockchain in Healthcare organization

Nowadays, health care data has always needed privacy and security. These healthcare data depend upon the cloud computing technology to manage and easy access for patients, health care providers and other authorized parties. But the suspicious attackers always attracted towards this healthcare data, and it automatically leads to consequences in the healthcare organization. This paper has been intended to study and surveyed how to preserve and secure health care data against suspicious attacks. The high demand for efficient storage leads to Blockchain as storage. The dominant Blockchain storage stored a large amount of health data with a shared key to encrypt the data to access it. The privacy-preserving platform technique has been implemented to curb the unauthorized users and accomplish privacy and security. Elliptic curve cryptography used for encryption purpose to encrypt the sensitive data while sharing the health data. Health care data has been considered as more sensitive so that security and user control has been accomplished by access control mode. In this survey, the cloud computing which made a mark in the field of health care organization, Blockchain a tremendous effective storage routine and the privacy-preserving scheme for authorization leads to legal user entry have been reviewed. Therefore the person who reads this survey can able to know about the secured way to access and store the sensitive information in cloud computing.