关键词: 零信任, 区块链, 数据共享, 访问控制, 能源数据分级

Abstract: Aiming at the problems of centralization, low transparency and low efficiency of interdepartmental access control in the traditional energy data sharing model, a blockchainbased hierarchical access control scheme for energy data sharing is proposed. Firstly, an Access Control model based on blockchain and energy data classification is designed. Based on the principle of “never trust, always verify” with zerotrust, blockchain is combined with AttributeBased access control (ABAC). The smart contract of blockchain is used to guarantee the automatic and credible decision of access control, and the finegrained access control with attribute as the determining factor is realized by ABAC. Secondly, the energy data is classified to reflect the privacy degree of its resources, and the corresponding access control strategy is designed. The final experimental results show that the scheme can ensure the controllable sharing of energy data under the largescale access control strategy.

Key words: zero trust, blockchain, data sharing, access control, energy data classification