Optimization of Data Asset Management and Sharing in Yantian Power Supply Bureau Based on Blockchain Smart Contracts

Management and secure exchange of power data assets are favorable to fostering value mining of power data assets, which is crucial to the growth of the power business. In order to prevent data leaking, safeguard the rights and interests of data providers, and offer appropriate rates to the demand side, it is sufficient for power data transactions to involve simply the exchange of the original data computation and analysis findings. In order to facilitate the trading and sharing of the results of calculations and analyses performed on the original data, the blockchain data sharing system must offer a data computing service. In this piece, we propose a homomorphic encryption smart contract-based system for exchanging electrical data, and we show how to put that system into action with the Fabric super ledger. The data computing services defined by smart contracts are carried out in protected Docker containers, achieving a trustworthy data computing environment. This article explores the selection method of an algorithm, taking the implementation of aggregate addition calculation function as an example. Paillier and integer vector homomorphic algorithms have superior encryption and computational efficiency compared to CKKS algorithm, so the first two algorithms are more suitable for implementing aggregate addition calculation function. Finally, this article completed the design and implementation of a prototype system for power data security sharing. The system's sharing operation performance was tested using a blockchain testing framework, and the performance of four functional transactions was tested at the second level, demonstrating the usability of the solution.