近年来，区块链作为一种分布式账本，以其防篡改、公开透明、去中心化等特点，使其应用于改善快速发展的科技服务中心化交易领域成为可能。随着被记录到区块链上的交易慢慢增多，数据因防篡改性提高而更可靠，但是，区块链也就越不保密，而科技服务交易参与者会因此担心服务秘密被泄露。针对区块链的隐私保护薄弱和科技服务交易市场的高产权特征，应用区块链零知识证明技术实现科技服务交易隐私保护和加密。理论分析表明，零知识证明技术可极大程度提高区块链在科技服务交易上的隐私保护。

In recent years, as a kind of distributed ledger, blockchain, with its tamper proof, open and transparent, decentralized and other characteristics, makes it possible to improve the rapid development of science and technology services in the field of centralized trading. With the gradual increase of transactions recorded on the blockchain, the data is more reliable due to the improvement of tamper resistance. However, the less confidential the blockchain is, and the participants of science and technology service transactions will worry about the disclosure of service secrets. In view of the weak privacy protection of blockchain and the high property characteristics of technology service trading market, the zero knowledge proof technology of blockchain is applied to realize the privacy protection and encryption of technology service trading. Theoretical analysis shows that zero knowledge proof technology can greatly improve the privacy protection of blockchain in science and technology service transactions.

C93;G301

国家重点研发计划“长江中游城市群综合科技服务集成与应用技术”（2018YFB1404303）