arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.04660cs.CR
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不受信任、保护隐私的区块链桥梁

Trustless, privacy-preserving blockchain bridges

Drew Stone

摘要:

在本文中,我们提出了一个协议,用于促进无信任的跨链加密货币转移,以保护桥提款的隐私。我们利用通常用于设计加密货币混合协议的零知识原语来提供类似的功能,但跨越两个或更多个区块链。为此,我们通过桥操作免费接收加密货币混合,并描述如何扩展这些协议以使用过去的想法来激励桥转移。我们描述了由此产生的协议如何导致Uniswap与Sushiswap传奇中创造的类似吸血鬼风格的攻击,但跨链。

英文摘要:

In this paper, we present a protocol for facilitating trust-less cross-chain cryptocurrency transfers that preserve privacy of bridge withdrawals. We leverage zero-knowledge primitives that are commonly used to design cryptocurrency mixing protocols to provide similar functionality but across two or more blockchains. To that end, we receive cryptocurrency mixing for free through the bridge operations and de-scribe how to extend these protocols to incentivise bridge transfers using past ideas. We describe how resulting protocols lead to similar vampire style attacks coined in the Uniswap vs. Sushiswap saga but across chains.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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