A Proxy Re-encryption Scheme of Medical Data Sharing Based on Consortium Blockchain

Li, Juxia; Zhang, Xing; Chu, Zhiguang

doi:10.1007/978-981-19-8877-6_1

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Functions in five categories are discussed. [19] and [21] employed third-party cloud storage servers to store relevant data, which could cause data leakage. Both [19], [20], and only employed symmetric encryption algorithms, which increased the risk of hacker attacks.…”

Section: Comparison To Traditional Data Management Systems and Discus...mentioning

confidence: 99%

A Fire Safety Data Management System Based on Blockchain Technology and Proxy Re-Encryption Algorithm

Zhang,

Su,

Wang

2024

Preprint

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A case study on a local chemical industry, Company A, is conducted in this article. Based on the data silo issues among different workshops and data tampering issues existing in the industry’s fire safety data management system, a novel distributed fire safety data management system that integrates blockchain technology with IPFS (InterPlanetary File Systems) is developed and tested. The system is constructed on Hyperledger Fabric platform and integrated with and IPFS private network. To eliminate data silo issues among workshops, a consortium blockchain network is created to maintain a shared storage model of fire safety data among various workshops in the plant. To prevent data tampering issues, the system utilizes ECC (Elliptic Curve Cryptography) encryption and proxy re-encryption algorithms to avoid the risk of private keys being exposed during data sharing while ensuring the security performance of the system. The developed system provides a new perspective for further exploring the application of blockchain technology in the field of chemical industry fire safety data management.

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Section: Comparison To Traditional Data Management Systems and Discus...mentioning

confidence: 99%

A Fire Safety Data Management System Based on Blockchain Technology and Proxy Re-Encryption Algorithm

Zhang,

Su,

Wang

2024

Preprint

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“…As one of the mainstream methods of on-chain expansion, sharding technology is currently the most effective expansion solution to achieve high performance without sacrificing centralization [16]. It adopts a divide and conquer approach, dividing nodes into small groups called shards, which can process transactions in parallel and alleviate the storage overhead of each node [17].…”

Section: Introductionmentioning

confidence: 99%

Blockchain Transaction Sharding Algorithm Based on Account-Weighted Graph

Li,

Ning

2024

IEEE Access

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Sharding technology is widely regarded as an effective way to solve blockchain scalability limitations, such as lower throughput and longer delay time. However, sharding encounters challenges related to high cross-shard transactions proportion and complex cross-shard transaction verification. Therefore, a transaction sharding algorithm based on account-weighted graph is proposed. Firstly, an account-based transaction sharding model is established from the viewpoint of data sharding. Secondly, based on this model, an account-weighted graph is constructed with accounts as nodes and transaction frequency between accounts as weights for the long-term accumulated transaction data of blockchain. The community discovery algorithm is adopted, and the accounts with the largest modularity gain are selected and merged according to the association relationship between the accounts, so multi-shards blockchain is formed initially. Finally, multishards blockchain are adjusted and rebuilt by splitting and merging. The proposed algorithm is compared with modular sharding algorithm and random sharding algorithm under the sharding size of 10. The crossshard transaction proportion is reduced by 78%, the average cross-shard transaction delay of accounts is reduced by 36.1% and 44.5%, and the transaction throughput is increased by 93% and 122%. Under the other granularities, the proposed algorithm also outperforms the two algorithms in terms of cross-shard transaction proportion and account transaction delay. In conclusion, the method effectively reduces the cross-shard transaction proportion and minimizes cross-shard transaction delay.

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A Proxy Re-encryption Scheme of Medical Data Sharing Based on Consortium Blockchain

Cited by 2 publications

References 11 publications

A Fire Safety Data Management System Based on Blockchain Technology and Proxy Re-Encryption Algorithm

A Fire Safety Data Management System Based on Blockchain Technology and Proxy Re-Encryption Algorithm

Blockchain Transaction Sharding Algorithm Based on Account-Weighted Graph

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