Results 131 to 140 of about 2,076 (178)

Meepo: Sharded Consortium Blockchain

2021 IEEE 37th International Conference on Data Engineering (ICDE), 2021
Blockchain performance cannot meet the requirement nowadays. One of the crucial ways to improve performance is sharding. However, most blockchain sharding research focuses on public blockchain. As for consortium blockchain, previous studies cannot support high cross-shard efficiency, cross-contract flexibility, shard availability, and strict ...
Peilin Zheng   +5 more
openaire   +1 more source

Lattice-based ring signcryption for consortium blockchain

open access: yesJournal of King Saud University - Computer and Information Sciences, 2023
Ring signcryption with no group administrator satisfies the decentralization and blockchain anonymity. In this article, we construct new lattice-based ring signcryption scheme suitable for consortium blockchain (CB-LRSCS), in which the smart contract controls the process of signcryption and unsigncryption to make the system be fair and reliable.
Huifang Yu
exaly   +4 more sources

A Certificateless Consortium Blockchain for IoTs

2020 IEEE 40th International Conference on Distributed Computing Systems (ICDCS), 2020
Blockchain is multi-centralized, immutable and traceable, thus is very suitable for distributed storage, privacy and security management in IoTs. However, most existing researches focus on the integration of public blockchain and IoTs. In fact, problems such as slow consensus, low transmission throughput, and completely open storage on the public ...
Xiaobing Guo   +5 more
openaire   +1 more source

Blockchain Security Framework for Government Private Blockchain Consortium

2021
Blockchain is a revolutionary technology that allows data transactions to be made in a decentralized structure without having trusted central authorities. Governments have taken steps to unleash the potential of blockchain technology to explore the use of blockchain as critical infrastructure, create new business models, and transform government ...
Ahmed Alketbi   +2 more
openaire   +1 more source

An Optimized Consortium Blockchain for Medical Information Sharing

IEEE Transactions on Engineering Management, 2021
Medical information is private, and medical data are valuable for medical research. Thus, medical information sharing is challenging because the data might be manipulated improperly and revealed during the operational process. The accuracy and integrity of medical information should be guaranteed throughout the sharing process.
Mingxiao Du   +3 more
openaire   +2 more sources

A Dynamic Sharding Protocol Design for Consortium Blockchains

2020 IEEE International Conference on Big Data (Big Data), 2020
The transaction efficiency of blockchains has been a painful point haunting researchers all the time. The metrics of Transaction per Second (TPS) present a low value, especially as the number of network nodes increases. In order to improve the blockchain’s TPS, numerous articles explored the solutions from multiple aspects, such as: using a new block ...
Zhixuan Zhou   +3 more
openaire   +2 more sources

On Consortium Blockchain Consistency: A Queueing Network Model Approach

IEEE Transactions on Parallel and Distributed Systems, 2021
Analyzing blockchain protocols is a notoriously difficult task due to the underlying large scale distributed networks. To address this problem, stochastic model-based approaches are often utilized. However, the abstract models in prior work turn out not to be adoptable to consortium blockchains as the consensus of such a blockchain often consists of ...
Chengzhong Xu, Tianhui Meng, Yubin Zhao
exaly   +2 more sources

A Global Clock Model for the Consortium Blockchains

2019
We propose a global clock model to achieve time synchronization for consortium blockchains. Based on the existing consortium blockchain framework, a global clock service node is added. We use the Byzantine fault-tolerant algorithm to ensure the stability of the global clock node services.
Chao Zan, Hai-Chuan Xu
openaire   +1 more source

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