EFFECTIVE LEDGER AND DECENTRALISATION IN HEALTHCARE USING BLOCKCHAIN

Healthcare block chains provide an innovative way to store healthcare information, execute healthcare transactions, and build trust for sharing health data in a decentralized open health network environment. Although the healthcare block chain technology has attracted broad interests and attention in industry, government and academia, the security and privacy concerns remain the focus of debate when deploying block chains for information sharing in the healthcare sector from business operation to research collaboration. This paper focuses on the security and privacy requirements for medical data sharing using block chain, and provides a comprehensive overview of security and privacy risks and requirements, along with technical solutions techniques. First, we discuss the security and privacy requirements and attributes required for electronic medical data sharing by deploying the healthcare block chain. Second, we categorize existing efforts into three benchmark block chain use cases for electronic medical information sharing and discuss the technologies to execute these security and privacy properties in the three categories of use cases for healthcare block chain, such as anonymous signatures, attribute-based encryption, zero-knowledge proofs, and verification techniques for smart contract Finally, we discuss other potential block chain application scenarios in healthcare We conjecture that this survey will help healthcare professionals, decision makers, and healthcare service developers to gain technical and intuitive insights into the security and privacy of healthcare block chains in terms of concepts, risks, requirements, development and deployment technologies and systems.