id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-319828-9ru9lh0c	Shi, Shuyun	Applications of Blockchain in Ensuring the Security and Privacy of Electronic Health Record Systems: A Survey	2020-07-15		.txt	text/plain	9684	612	50	The potential benefits associated with EHR systems (e.g. public healthcare management, online patient access, and patients medical data sharing) have also attracted the interest of the research community [1, 2, 3, 4, 5, 6, 7, 8, 9] . In theory, EHR systems should ensure the confidentiality, integrity and availability of the stored data, and data can be shared securely among authorized users (e.g. medical practitioners with the right need to access particular patient's data to facilitate diagno-70 sis). 2. all of data will be exposed once the corresponding symmetric key is lost Table 2 : systems requirements that have been met in Table 1 paper security privacy anonymity integrity authentication controllability auditability accountability [48] designed a system that integrates smart contract with IPFS to improve decentralized cloud storage and controlled data sharing for better user access management. Secure and efficient data accessibility in blockchain based healthcare systems	./cache/cord-319828-9ru9lh0c.txt	./txt/cord-319828-9ru9lh0c.txt