Abstract:

There are currently many high-value data in practical business, yet without an effective sharing scheme, these data are difficult to be shared and cannot be fully utilized. Blockchain is an emerging technology that enables the node participating in the blockchain to trust each other without a center and reach an agreement finally. The data of each node in the blockchain system is shared with the node possessing the data of all transactions, and the data is written to the blockchain only after the agreement of the transaction data among the nodes is confirmed during the transaction. Therefore, the transaction data cannot be denied and likewise cannot be modified. Since blockchain has the characteristic of tamper-proof and traceability, this paper adopted FISCO BCOS, a federation chain whose participating members’ identities were audited by the system, as the underlying architecture and carried out security design at the system level, thereby completing the secure sharing of high-value data. Both qualitative and quantitative tests of the sharing system were conducted to prove that the designed system was feasible, user-friendly, and secure enough to ensure information security.

Key words: blockchain, smart contract, data sharing, information security, sharing system design