Payment Channels Under Network Congestion
Payment Channels Under Network Congestion
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DOI：
10.1109/icbc54727.2022.9805547
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发表时间：
2022-05
期刊：
影响因子：
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通讯作者：
Tuan Tran;Haofan Zheng;P. Alvaro;Owen Arden
中科院分区：
文献类型：
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作者：
Tuan Tran;Haofan Zheng;P. Alvaro;Owen Arden
在以太坊等领先的区块链上发送交易可能会很慢，而且成本很高。支付渠道是一种众所周知的扩展解决方案，它可以最大限度地减少链上发送的交易，并允许用户更有效地进行交易。支付渠道的保证之一是没有交易对手风险，因此诚实的一方能够提取双方同意的最近交易所反映的金额。在本文中，我们表明，这种保证可以被违反时，网络拥塞。不管诚实的一方是否在线，恶意的一方都可以利用高额的交易费用来获得比他们应该获得的更多的钱。我们提出了一种新的支付渠道建设，有助于减轻这些类型的攻击。
Sending transactions on leading blockchains such as Ethereum can be slow and costly. A payment channel is a well-known scaling solution that minimizes transactions sent on the chain, and allows users to transact more efficiently. One of the guarantees of payment channels is that there is no counterparty risk, so an honest party is able to withdraw the amount of money that is reflected by the most recent transaction agreed by both parties. In this paper, we show that this guarantee can be violated when the network is under congestion. Regardless of whether or not the honest party is online, the malicious party can leverage high transaction fees to gain more money than they're supposed to. We present a novel construction of payment channels that helps mitigates these types of attacks.