Improved dynamic Byzantine Fault Tolerant consensus mechanism

IF 4.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS Computer Communications Pub Date : 2024-08-08 DOI:10.1016/j.comcom.2024.08.004

Fei Tang , Jinlan Peng , Ping Wang , Huihui Zhu , Tingxian Xu

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引用次数: 0

Abstract

The Byzantine Fault Tolerance (BFT) consensus protocols are widely used in consortium blockchain to ensure data consistency. However, BFT protocols are generally static which means that the dynamic joining and exiting of nodes will lead to the reconfiguration of the consortium blockchain system. Moreover, most BFT protocols cannot support the clearing operation of slow, crashed, or faulty nodes, which limits the application of consortium blockchain. In order to solve these problems, this paper proposes a new Dynamic Scalable BFT (D-SBFT) protocol. D-SBFT optimizes SBFT by using Distributed Key Generation (DKG) technology and BLS aggregate signature scheme. On the basis of SBFT, we add Join, Exit, and Clear algorithms. Among them, Join and Exit algorithms enable nodes to actively join and exit the consortium blockchain more flexibly. Clear can remove slow, crashed or faulty nodes from the consortium blockchain. Experimental results show that our D-SBFT protocol can efficiently implement node dynamic change while exhibiting good performance in consensus process.

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改进的动态拜占庭容错共识机制

拜占庭容错（BFT）共识协议被广泛应用于联盟区块链，以确保数据一致性。然而，BFT 协议通常是静态的，这意味着节点的动态加入和退出将导致联盟区块链系统的重新配置。此外，大多数 BFT 协议无法支持缓慢、崩溃或故障节点的清算操作，这限制了联盟区块链的应用。为了解决这些问题，本文提出了一种新的动态可扩展 BFT（D-SBFT）协议。D-SBFT 通过使用分布式密钥生成（DKG）技术和 BLS 聚合签名方案对 SBFT 进行了优化。在 SBFT 的基础上，我们增加了加入（Join）、退出（Exit）和清除（Clear）算法。其中，加入和退出算法能让节点更灵活地主动加入和退出联盟区块链。清除算法可以从联盟区块链中清除速度慢、崩溃或有故障的节点。实验结果表明，我们的 D-SBFT 协议可以有效地实现节点动态变化，同时在共识过程中表现出良好的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer Communications 工程技术-电信学

CiteScore

14.10

自引率

5.00%

发文量

397

审稿时长

66 days

期刊介绍： Computer and Communications networks are key infrastructures of the information society with high socio-economic value as they contribute to the correct operations of many critical services (from healthcare to finance and transportation). Internet is the core of today''s computer-communication infrastructures. This has transformed the Internet, from a robust network for data transfer between computers, to a global, content-rich, communication and information system where contents are increasingly generated by the users, and distributed according to human social relations. Next-generation network technologies, architectures and protocols are therefore required to overcome the limitations of the legacy Internet and add new capabilities and services. The future Internet should be ubiquitous, secure, resilient, and closer to human communication paradigms. Computer Communications is a peer-reviewed international journal that publishes high-quality scientific articles (both theory and practice) and survey papers covering all aspects of future computer communication networks (on all layers, except the physical layer), with a special attention to the evolution of the Internet architecture, protocols, services, and applications.