The Survey on the development of Secure Multi-Party Computing in the blockchain

This paper introduces the mainstream secure multi-party computing technology in the blockchain, which provides a reference for further research in the blockchain field. First, we analyze the privacy protection issues in the blockchain and conclude that secure multi-party computing can make up for the security flaws in the blockchain. Secondly, we summarize the developing secure multi-party computing technology based on blockchain, which are the Zero-knowledge proof scheme, the secret sharing scheme, and the homomorphic encryption scheme. At the same time, we have conducted a security analysis of the multi-party computing technology in the blockchain, and believe that these three technologies can well solve the privacy protection problem in the blockchain. Finally, we look forward to the development trend of the secure multi-party computing in the blockchain, which is expected to solve the problems of poor scalability, key distribution, and non-resistance to quantum attacks. Although the secure multi-party computing technology in the blockchain is still in the development stage, the combination of cryptography and blockchain will become the mainstream development trend in the future.