JJEM: Special Edition 2 (December 2024)
JJEM: Special Edition 2 (December 2024)
2024-12-08
A secured Medical Data Sharing using Blockchain Technology
Pavithra K A, Sampath Kumar
File storage is perhaps the most well-known and frequently used cloud computing application in the modern world. Yet, if a document is saved in one place in the cloud and synchronized with a computer, it can be accessed by hackers and thus cannot be considered safe. Thus, there is no difference between blockchain and cloud storage and the simple way of looking at it is it can be considered as cloud storage with added security. It means that any node, which is involved in generation of resources, can form the associations with peers if connected to the Internet. This is because block chain information has to be copied and spread across nodes to make certain that agreement is reached and this helps in creating a set database that cannot be changed by nodes in the block chain. The new system will get a user’s file, insure it based on IPFS (Inter Planetary File System) and then upload each file to many peers within the network. However, IPFS provides hash values that point to the direction of the file. This hash value will be included in the block chain together with other features of the block. These records are stored in the blockchain and IPFS cloud networks of the ’n’ users. Specifically, when a user uploads a specific file to the system, the information is encrypted and uploaded on the IPFS. The file data will be stored in the blockchain and it will be secure and cannot be manipulated. Moreover, during the downloading of a certain version of the file, metadata associated with this file are obtained from the blockchain and used for encryption and the content delivery. The file information is retained and, at the same time, the smart contracts transfer the cryptocurrency (ETH) from the user’s wallet to the peer’s wallet. The Advanced Encryption Standard (AES) is an encryption technology that enhances protection of data that users store on the cloud.
Blockchain, EHR, Medical data, Security