区块链矿池网络及典型攻击方式综述

doi:10.19678/j.issn.1000-3428.0068203

摘要/Abstract

摘要：

区块链网络是构建在TCP/IP体系之上的一类覆盖网络，在不依赖可信中心服务节点和可信信道的前提下，为分布式环境中互不信任的节点之间就账本数据达成一致性提供通信保障。随着区块链挖矿技术的发展，尤其是基于ASIC、GPU等硬件的工作量证明共识挖矿技术在比特币（BTC）、以太坊（ETH）、莱特币等主流加密货币中的应用，支撑矿池挖矿方式的矿池网络引起了研究者的广泛关注，因此归纳并总结区块链矿池网络及其安全方面的研究成果对于追踪区块链技术研究进展和拓展区块链应用范围具有重要价值。首先，结合传统对等（P2P）网络组网模式，针对BTC、ETH和超级账本等典型应用场景，梳理区块链P2P网络运行机制和特点。然后，介绍矿池、矿场以及矿池网络概念，分析矿池网络的组成要素以及GetWork、GetBlockTemplate和Stratum典型矿池网络协议的工作原理。接着，重点讨论针对矿池网络的自私挖矿、跳池、扣块、空块等典型攻击方式的实现过程，并提出相应的防范方法。最后，对矿池网络的未来发展方向进行展望。

关键词: 区块链, 对等网络, 矿池网络, 共识机制, 网络攻击

Abstract:

The blockchain network is a type of overlay network constructed on a Transmission Control Protocol/Internet Protocol(TCP/IP) system. It provides communication support to ensure the consistency of ledger data between mutual distrust nodes in a distributed environment without relying on trusted central-service nodes and trusted channels. Owing to the development of blockchain mining technology, particularly the application of Proof of Work(PoW) consensus mining technology based on Application-Specific Integrated Circuit(ASIC), Graphics Processing Unit(GPU), and other hardware used in mainstream cryptocurrencies such as Bitcoin(BTC), Ethereum(ETH), and Litecoin(LTC), researchers have extensively investigated the mining pool network, which supports the mining pool mode.However, results pertaining to the mining pool network and its security are scarce. Therefore, the abovementioned results must be summarized and synthesized to monitor the progress of blockchain technology research and expand blockchain application research. First, based on the networking mode of the classical Peer-to-Peer(P2P) network, this study reviews the operating mechanism and characteristics of the blockchain P2P network based on typical application scenarios such as BTC, ETH, and Hyperledger. Second, this study introduces the concept of mining pool, mining field, and mining pool network, as well as analyzes the components of the mining pool network and the operating principle of typical mining pool network protocols such as GetWork, GetBlockTemplate, and Stratum.Subsequently, the implementation process of typical attack modes such as selfish mining, pool hopping, block withholding, and empty block attacks against the mining pool network is discussed, and the corresponding prevention methods are proposed. Finally, future developments for the mining pool network are recommended.

Key words: blockchain, Peer-to-Peer(P2P) network, mining pool network, consensus mechanism, network attack

倪雪莉, 马卓, 王群. 区块链矿池网络及典型攻击方式综述[J]. 计算机工程, 2024, 50(1): 17-29.

Xueli NI, Zhuo MA, Qun WANG. Overview of Blockchain Mining Pool Networks and Typical Attack Modes[J]. Computer Engineering, 2024, 50(1): 17-29.

http://www.ecice06.com/CN/Y2024/V50/I1/17

图/表 12

图1 矿池网络的研究架构

Fig.1 Research architecture of mining pool network

图2 P2P网络的4类典型模型

Fig.2 Four typical models of P2P networks

图3 Fabric中节点之间的信息交互流程

Fig.3 Procedure of information interaction between nodes in a Fabric

图4 区块链矿池网络示意图

Fig.4 Schematic diagram of blockchain mining pool network

图5 Merkle树及MerkleRoot的生成过程

Fig.5 Generation process of Merkle tree and MerkleRoot

图6 以太坊矿池挖矿的基本操作流程

Fig.6 Basic operation process of Ethereum mining pool mining

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