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.
ZHU Ziqiang, YAO Zhongyuan, ZHU Weihua, ZHAO Haihong, PAN Changfeng, SI Xueming
. Anonymous and Traceable Data Trading Scheme Based on Blockchain[J]. Journal of Applied Sciences, 2022
, 40(4)
: 653
-665
.
DOI: 10.3969/j.issn.0255-8297.2022.04.009
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