Journal of Applied Sciences ›› 2022, Vol. 40 ›› Issue (4): 653-665.doi: 10.3969/j.issn.0255-8297.2022.04.009

• Blockchain • Previous Articles    

Anonymous and Traceable Data Trading Scheme Based on Blockchain

ZHU Ziqiang1,2, YAO Zhongyuan1,2, ZHU Weihua1,2, ZHAO Haihong1,2, PAN Changfeng3, SI Xueming1,2,4   

  1. 1. The Frontier Information Technology Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, Henan, China;
    2. Henan International Joint Laboratory of Blockchain and Data Sharing, Zhengzhou 450007, Henan, China;
    3. New Huadu Business School, Minjiang University, Fuzhou 350121, Fujian, China;
    4. School of Computer Science, Fudan University, Shanghai 201203, China
  • Received:2021-11-14 Published:2022-08-03

Abstract: To solve the data leakages of user identity and other privacy data in the process of data trading in blockchain, a data asset trading scheme based on alliance chain and group signature is proposed. This paper adopts alliance chain node access mechanism to realize the identity authentication of registered users. A linkable group signature technology is introduced to realize user anonymity and traceability in the process of trading. Meanwhile, a fair data exchange strategy is implemented on the chain by using the smart contract. Finally, theoretical analysis and simulation results show that the scheme can achieve decentralized data trading with higher security and efficiency.

Key words: alliance blockchain, data trading, group signature, traceability, smart contract

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