Controlled Sharing Mechanism of Data Based on the Consortium Blockchain

Li, Jin; Wu, Songqi; Yang, Yundan; Duan, Fenghui; Lu, Hui; Lu, Yueming

doi:10.1155/2021/5523489

Cited by 5 publications

(3 citation statements)

References 24 publications

(26 reference statements)

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“…Due to the characteristics of its distributed data ledger, it is widely used in multiple scenarios such as virtual currency, electronic bidding, and Industrial Internet of Things. In terms of addressing data privacy, blockchain can be combined with a variety of cryptographic methods, for example, attribute encryption [8], homomorphic encryption [9], searchable encryption, and proxy reencryption combined [10], to achieve the protection of data privacy and identity privacy on the blockchain.…”

Section: Introductionmentioning

confidence: 99%

Blockchain Data Privacy Protection and Sharing Scheme Based on Zero-Knowledge Proof

Tao

Yang

Liu

et al. 2022

Wireless Communications and Mobile Computing

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The data generated in the Industrial Internet of Things (IIoT) has important research value. In the process of data sharing, data privacy, security, and data availability are important issues that cannot be ignored. This paper proposes a blockchain privacy protection scheme based on zero-knowledge proof to realize the secure sharing of data among data owners, cloud service providers, and semitrusted cloud servers. First, the method of combining zero-knowledge proof and smart contract is used to verify the availability of data between the data owner and the cloud service provider under the premise of protecting data privacy. Second, proxy reencryption technology is used to realize the secure sharing of data among authorized cloud service providers. In addition, data sharing transaction information between multiple parties and data hashes with digital signatures are stored on the blockchain to achieve public and verifiable data sharing information and data validity. Finally, the theoretical analysis of the scheme shows that the scheme meets the confidentiality requirements of security, integrity, and validity.

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Section: Introductionmentioning

confidence: 99%

Blockchain Data Privacy Protection and Sharing Scheme Based on Zero-Knowledge Proof

Tao

Yang

Liu

et al. 2022

Wireless Communications and Mobile Computing

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“…Li J tries to solve the problems in the technology financial service scenario. Since it is difficult to share cross-departmental information in a timely manner, financial institutions often have difficulties in providing multi-party data sources to other companies in their investment business [3]. This article mainly studies the financial data sharing mechanism of BT.…”

Section: Introductionmentioning

confidence: 99%

Financial Data Sharing Mechanism Based on Blockchain Technology

Yu¹

2022

Proceedings of the International Conference on Information Economy, Data Modeling and Cloud Computing, ICIDC 2022, 17-19 June 2

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Continuous breakthroughs in IT (Internet information technology) have added new momentum to the development of the financial industry. As one of the information technologies with great development potential in recent years, BT (blockchain technology) has the characteristics of immutability, traceability, decentralization, and complete distribution, which are different from other IT. The important reason for the rapid development of the application of BT is that it can establish trust transfer between peers without relying on third-party trusted institutions, which helps the various problems faced in the process of data exchange. BT has subverted the traditional model of finance, medical and other industries to a certain extent. At present, in the financial industry, there are often problems such as untimely updating of information and mutual trust between interdepartmental departments. BT can easily complete the construction and maintenance of financial information databases. Therefore, this article is mainly based on the research of FD(financial data) sharing mechanism based on BT. First, the data reliable connection mechanism of the BIZi network is analyzed. The results show that the three technologies that make up the BIZi network have their own characteristics. Blockchain has the strongest fault tolerance, with a fault tolerance rate of 87%. IPFS and Zigzag have advantages in storage capacity and scalability respectively. Secondly, the effect of the establishment of the FD sharing mechanism of BT is analyzed. The survey data shows that nearly half of the people believe that the establishment of the financial industry data sharing mechanism is conducive to reducing cooperation costs, 26% of people pointed out that the establishment of a sharing mechanism helps to strengthen communication between departments, and 21 people also pointed out that the data sharing mechanism can improve the efficiency of financial capital operations.

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“…The alliance chain (Li et al, 2021) has different forms and structures from public chains, such as BTC and ETH, and it achieves a balanced state between decentralization and centralization, both of which make the alliance chain the main form of blockchain that attracts wide attention from people. Hyperledger Fabric (Androulaki et al, 2018) is one of the most popular alliance chains at present, and its security mechanism is particularly important.…”

mentioning

confidence: 99%

Fabric Blockchain Design Based on Improved SM2 Algorithm

Zhou

Zhang

2023

International Journal on Semantic Web and Information Systems

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As one of the most widely used federated chains, hyperledger fabric uses many cryptographic algorithms to ensure the security of information on the chain, but the ECDSA cryptographic algorithm used in the fabric system has backdoor security risks. In this paper, the authors adopt SM2 algorithm to replace the corresponding ECDSA algorithm for blockchain design based on fabric platform. Firstly, they optimize the part of SM2 signature algorithm process with inverse operation and effectively reduce the time complexity by reducing the inverse operation in the whole process, and the experimental results show that the improved SM2 algorithm improves the signature and verification efficiency by about 5.7%. Secondly, by adding SM2 algorithm template and interface to the BCCSP module of fabric platform to realize the shift value of SM2 algorithm and compare the performance with the native fabric system, the network startup time is reduced by about 29%. The experimental results show the effectiveness of the improved SM2 algorithm, and also the performance of the optimized fabric system is improved.

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Controlled Sharing Mechanism of Data Based on the Consortium Blockchain

Cited by 5 publications

References 24 publications

Blockchain Data Privacy Protection and Sharing Scheme Based on Zero-Knowledge Proof

Blockchain Data Privacy Protection and Sharing Scheme Based on Zero-Knowledge Proof

Financial Data Sharing Mechanism Based on Blockchain Technology

Fabric Blockchain Design Based on Improved SM2 Algorithm

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