电力集合竞价交易环境下用户隐私保护方案研究

Research on User Privacy Protection Scheme in Electricity Call Auction Transaction System

在电力集合竞价交易中,用户竞价信息存在被窃听或篡改等风险,这会导致用户隐私泄露,造成经济损失,影响交易系统的公平性和透明性,甚至会对电力系统的稳定运行造成影响。因此,确保用户安全地参与电力集合竞价交易成为亟待解决的问题。为此,提出了一种基于联盟链和无证书聚合签密的隐私保护方案。使用了假名技术,防止用户参与电力集合竞价交易市场时真实身份信息被泄露;使用了改进的无证书聚合签密和时释性加密算法,竞价信息通过加密后上传至联盟链,确保了竞价信息的安全;通过联盟链和智能合约实现了电力集合竞价交易市场的公平性和透明性,交易匹配结果通过共识后上传到联盟链,确保数据安全存储。性能分析和实验结果表明,本方案计算开销较低,同时满足交易系统所需的安全特性,适用于电力集合竞价交易环境。

In electricity call auction transaction,there is a risk of users’bidding messages being eavesdropped or tampered,which can lead to the leakage of users’privacy,causing economic losses,affecting the fairness and transparency of the transaction system,and even affecting the stable operation of the power system.Therefore,it becomes an urgent problem to ensure that users can participate in electricity call auction transaction securely.To this end a privacy protection scheme based on consortium blockchain and certificateless aggregate signcryption is proposed.The pseudonym technology is used to prevent the real identity information from being leaked when users participate in the electricity call auction transaction market;using the improved certificateless aggregate signcryption and time-release encryption algorithm,bidding messages are encrypted and uploaded to the consortium blockchain,which ensures the security of bidding messages;the fairness and transparency of electricity call auction transaction market have been realized through consortium blockchain and smart contracts. The transaction matching results are uploaded to the consortium blockchain after passing consensus to storage data securely. Performance analysis and experimental results indicate that the proposed scheme can reduce the computation cost and satisfy the security features required by the transaction system, which is suitable for the environment of electricity call auction transaction.