Blockchain technology is more advantageous in supply chain management since there is a constant need to record the transaction history of each node/party in the blockchain network. One such example is storage of blood donation and transfusion data on blockchain. As multiple parties such as blood donor, blood bank and hospital are involved, it is necessary to keep the part of their transactional data (such as donor’s personal data, patient’s personal data) as confidential. Hence in this paper, with the intension to provide more data confidentiality and security, the popular data encryption algorithm ‘Advanced Encryption Standard (AES)’, a symmetric key crypto-system is employed on part of blood-chain data before sending transactions to the ordering service and adding blocks to the ledger. Therefore, only a person who has access to the appropriate key that was used to create the cipher text can decrypt the encrypted data. In addition, the performance of the transaction using different parameters such as data encryption/decryption speed, storage is evaluated using Hyperledger Caliper Tool.

Data Encryption of Blood-chain data in Blockchain Network

Blockchain technology is more advantageous in supply chain management since there is a constant need to record the transaction history of each node/party in the blockchain network. One such example is storage of blood donation and transfusion data on blockchain. As multiple parties such as blood donor, blood bank and hospital are involved, it is necessary to keep the part of their transactional data (such as donor’s personal data, patient’s personal data) as confidential. Hence in this paper, with the intension to provide more data confidentiality and security, the popular data encryption algorithm ‘Advanced Encryption Standard (AES)’, a symmetric key crypto-system is employed on part of blood-chain data before sending transactions to the ordering service and adding blocks to the ledger. Therefore, only a person who has access to the appropriate key that was used to create the cipher text can decrypt the encrypted data. In addition, the performance of the transaction using different parameters such as data encryption/decryption speed, storage is evaluated using Hyperledger Caliper Tool. 

In smart healthcare, blockchain technology addresses existing concerns with security, privacy, and electronic healthcare records. In addition, utilizing edge devices with IoMT devices is very advantageous for addressing security, computing, and storage challenges. Symmetric and asymmetric keys are used to conceal sensitive information from unauthorized parties. Moreover, the hash function SHA256 helps for data alteration detection. The proposed system uses a blockchain-based smart healthcare system using IoMT devices for continuous patient monitoring. The edge device is used to hash and encrypt data and provide additional computational capability. A symmetric key maintains data privacy in the blockchain, allowing patients to safely share data through smart contracts while preventing unauthorized physicians from seeing it. A verification node and blockchain sign and validate patient data in the healthcare provider system using an asymmetric key. Location-based authentication is addressed to ensure the authenticity and data source.

hChain: Blockchain Based Healthcare Data Sharing with Enhanced Security and Privacy Location-Based-Authentication

Blockchain is the prominent security that provides more security to critical information. Blockchain provides a shared, immutable and transparent history for all the transactions built with the help of Blockchain technology that has trust, account and transparency. Blockchain technology is used to protect data and gives reliability. An AES algorithm is used to encrypt the data. The aim of the paper is that to provide better communication between the patients and doctors to share their opinion and viewpoint on different kinds of problems and put the patients in control according to their clinical data, providing them with the legal rights to share the data, the clear, understandable version of their data with the medical network of every organization, if needed.

S Joseph Gabriel

Papers

An Enhanced Blockchain Technology with AES Encryption Security System for Healthcare System