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Link to original content: https://doi.org/10.48550/arXiv.2212.07265
[2212.07265] Cross-Channel: Scalable Off-Chain Channels Supporting Fair and Atomic Cross-Chain Operations
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Computer Science > Cryptography and Security

arXiv:2212.07265 (cs)
[Submitted on 14 Dec 2022]

Title:Cross-Channel: Scalable Off-Chain Channels Supporting Fair and Atomic Cross-Chain Operations

Authors:Yihao Guo, Minghui Xu, Dongxiao Yu, Yong Yu, Rajiv Ranjan, Xiuzhen Cheng
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Abstract:Cross-chain technology facilitates the interoperability among isolated blockchains on which users can freely communicate and transfer values. Existing cross-chain protocols suffer from the scalability problem when processing on-chain transactions. Off-chain channels, as a promising blockchain scaling technique, can enable micro-payment transactions without involving on-chain transaction settlement. However, existing channel schemes can only be applied to operations within a single blockchain, failing to support cross-chain services. Therefore in this paper, we propose Cross-Channel, the first off-chain channel to support cross-chain services. We introduce a novel hierarchical channel structure, a new hierarchical settlement protocol, and a smart general fair exchange protocol, to ensure scalability, fairness, and atomicity of cross-chain interactions. Besides, Cross-Channel provides strong security and practicality by avoiding high latency in asynchronous networks. Through a 50-instance deployment of Cross-Channel on AliCloud, we demonstrate that Cross-Channel is well-suited for processing cross-chain transactions in high-frequency and large-scale, and brings a significantly enhanced throughput with a small amount of gas and delay overhead.
Subjects: Cryptography and Security (cs.CR)
Cite as: arXiv:2212.07265 [cs.CR]
  (or arXiv:2212.07265v1 [cs.CR] for this version)
  https://doi.org/10.48550/arXiv.2212.07265

Submission history

From: Yihao Guo [view email]
[v1] Wed, 14 Dec 2022 15:01:22 UTC (7,016 KB)
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