Distributed energy trading system is a new business model of energy industry. Applying blockchain technology, energy supply contracts can be communicated directly between producers and consumers. However, blockchain is without any identity authentication and legitimate user identities are possibly forged if there is not any user identity authentication procedure in a trading system. In this paper, we design an authentication scheme for blockchain-based energy trading systems by using edge computing, including journalizing processes, registration, and identity authentication. In our scheme, each node has computing power, which can ensure the meter data can be processed locally or on the edge. In addition, the correctness and security analysis of the scheme are also given in this paper. The analysis shows that our scheme is unforgeability and can protect users’ privacy.

分布式能源交易系统是能源行业的一种新的商业模式。应用区块链技术，能源供应合同可以在生产者和消费者之间直接沟通。但是，区块链没有任何身份认证，如果交易系统中没有任何用户身份认证程序，则可能会伪造合法用户身份。在本文中，我们使用边缘计算设计了基于区块链的能源交易系统的认证方案，包括日记处理，注册和身份认证。在我们的方案中，每个节点都具有计算能力，可以确保电表数据可以在本地或在边缘处理。另外，还给出了该方案的正确性和安全性分析。