Efficient and Secure Consensus and Privacy Protection Scheme for E-Commerce Consortium Blockchain

The application of blockchain technology to the field of e-commerce has solved many dilemmas, such as low transparency of transactions, hidden risks of data security and high payment costs. However, there are still constraints in the existing e-commerce consortium blockchain, such as the leakage of users' privacy information, the incomplete traditional consensus algorithm, and the severely insufficient blockchain performance. In this paper, we propose a secure and efficient transaction model applicable to e-commerce consortium blockchain, aiming at guaranteeing the security of user privacy information and transaction data while improving the transaction processing efficiency of the system. The model uses homomorphic encryption algorithm to maintain the confidentiality of user transaction information, and improves the Byzantine resistance of the Raft consensus algorithm while retaining its simplicity and efficiency. The effectiveness of the scheme proposed in this paper is demonstrated by experimental simulations.