区块链P2P网络上的非目标延迟攻击:可行性和财务影响
IEEE transactions on cybernetics
|January 19, 2026
概括
区块链网络面临来自对等连接延迟的安全风险. 本研究介绍了一种实际的延迟攻击,证明了它在破坏区块传播和增加以太坊等网络上的攻击收入方面的有效性.
科学领域:
- 计算机科学 计算机科学
- 网络安全 网络安全
- 密码学 密码学 密码学 密码学
背景情况:
- 公共区块链网络容易受到攻击,利用同行连接来阻碍区块传播.
- 现有的漏洞威胁到分散网络的完整性和性能.
- 区块链日益普及,需要加强针对网络层漏洞的安全措施.
研究的目的:
- 为区块链网络提出并验证一种实用的非目标延迟攻击方法.
- 评估延迟攻击在不同区块链大小上的可行性,可扩展性和影响.
- 分析这些攻击对工作证明 (PoW) 和股权证明 (PoS) 共识机制的影响.
主要方法:
- 开发了一种针对区块链网络中的对等连接的新型延迟攻击.
- 验证了攻击对EthereumPoW (ETHW) 的有效性,并预先合并以太坊主网.
- 优化了以太坊Geth客户端,通过放松连接限制来降低攻击成本.
主要成果:
- 延迟攻击严重破坏了ETHW和以太坊网络中的区块传播.
- 在ETHW,近三分之一的节点的延迟超过5.9s.
- 在以太坊中,超过80%的同行经历了长时间的传播,延迟时间增加了77%.
结论:
- 延迟攻击是可扩展的,并且对大规模的区块链网络有效.
- 攻击者可能会获得收入,特别是通过PoS重组攻击的联合策略.
- 迫切需要加强网络层防御,并确保对等协议对此类漏洞的安全.
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