Chinese Journal of Network and Information Security ›› 2023, Vol. 9 ›› Issue (6): 56-70.doi: 10.11959/j.issn.2096-109x.2023083

• Papers • Previous Articles    

Hybrid-chain-based supervision scheme for privacypreserving trading system

Xuedan JIA1,2, Longxia HUANG1, Pujie JING1, Liangmin WANG3, Xiangmei SONG1   

  1. 1 School of Computer Science and Communication Engineering, Jiangsu University, Zhenjiang 212013, China
    2 Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Nanjing 210014, China
    3 School of Cyber Science and Engineering, Southeast University, Nanjing 211189, China
  • Revised:2023-10-23 Online:2023-12-01 Published:2023-12-01
  • Supported by:
    The National Key R&D Program of China(2022YFD2100605);The National Natural Science Foundation of China(62102168);The Leading-Edge Technology Program of Jiangsu Natural Science Foundation(BK20202001);The Natural Science Foundation of Jiangsu Province(BK20200888)

Abstract:

Due to its characteristics of decentralization, transparency, and security, blockchain technology is widely used in finance, the Internet of Things, and supply chain.However, along with the opportunities it brings, the application of blockchain technology also presents new challenges.On one hand, traditional centralized regulatory methods can undermine the decentralized and autonomous nature of blockchain, creating regulatory dilemmas.On the other hand, blockchain-based systems require privacy protection as transactions often contain sensitive information beyond currency amounts.Failure to protect privacy can result in information leakage and make it difficult for authorities to monitor transactions.To address these challenges and enable regulation in privacy-preserving blockchain-based trading systems, a hybrid chain framework was proposed.This framework incorporated a multiple committee-based approach for general cross-chain regulation.Separate committees were established for the supervision chain and service chain.The service chain committee handled service chain data, generating and sending proofs to the supervision chain to achieve private supervision.In addition to single-chain regulation, cross-chain communication committees and supervision committees collaborated to achieve cross-chain transaction supervision among different service chains.Through a security analysis, it is proven that the proposed scheme is secure when each module meets its security requirements.Experimental evaluations have been conducted to demonstrate the feasibility of the proposed scheme, showing that it achieves cross-chain supervision at a low cost and is scalable.

Key words: blockchain, supervision, cross-chain, privacy

CLC Number: 

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