HT2REP: A fair cross-chain atomic exchange protocol under UC framework based on HTLCs and TRE

IF 4.1 2区计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Computer Standards & Interfaces Pub Date : 2024-01-20 DOI:10.1016/j.csi.2024.103834

Tao Li , Peiyao Niu , Yilei Wang , Shengke Zeng , Xiaoying Wang , Willy Susilo

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引用次数: 0

Abstract

Cross-chain transactions between heterogeneous blockchain systems pose various challenges, encompassing atomicity, security, and fairness of the transactions. While Traditional Hash Time Lock Contracts (HTLCs) can achieve atomic cross-chain transactions, they exhibit fairness deficiencies in two aspects: firstly, the transaction initiator benefits from an American Option (AO) advantage, and secondly, the transaction responder may be incentivized to launch a Draining Attack (DA), both of which impact the fairness of cross-chain transactions. Because of significant fluctuations in the exchange rate of tokens held by both parties, cross-chain transactions often face timeout rollbacks, resulting in a diminished probability of successful transactions. To tackle these issues, we propose a novel atomic cross-chain exchange protocol— $H T^{2} R E P$ . This protocol integrates Time Released Encryption (TRE), ShangMi 3 Hash function (SM3), and scalable smart contract technologies to enhance fairness within the traditional HTLCs protocol. Additionally, $H T^{2} R E P$ ensures atomicity, security, and a heightened probability of success for cross-chain exchanges. Finally, we demonstrate that $H T^{2} R E P$ is Universally Composable (UC) secure.

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HT2REP：基于 HTLC 和 TRE 的 UC 框架下的公平跨链原子交换协议

异构区块链系统之间的跨链交易面临着各种挑战，包括交易的原子性、安全性和公平性。传统的哈希时间锁定合约（HTLC）虽然可以实现原子跨链交易，但在公平性方面却存在两方面的缺陷：首先，交易发起方会从美式期权（AO）优势中获益；其次，交易响应方可能会被激励发起耗尽攻击（DA），这两方面都会影响跨链交易的公平性。由于交易双方持有的代币汇率波动较大，跨链交易经常面临超时回滚，导致交易成功的概率降低。为了解决这些问题，我们提出了一种新型原子跨链交换协议--HT2REP。该协议集成了时间释放加密（TRE）、ShangMi 3 哈希函数（SM3）和可扩展智能合约技术，以提高传统 HTLCs 协议的公平性。此外，HT2REP 还确保了跨链交换的原子性、安全性和更高的成功概率。最后，我们证明了 HT2REP 的通用可组合（UC）安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer Standards & Interfaces 工程技术-计算机：软件工程

CiteScore

11.90

自引率

16.00%

发文量

审稿时长

6 months

期刊介绍： The quality of software, well-defined interfaces (hardware and software), the process of digitalisation, and accepted standards in these fields are essential for building and exploiting complex computing, communication, multimedia and measuring systems. Standards can simplify the design and construction of individual hardware and software components and help to ensure satisfactory interworking. Computer Standards & Interfaces is an international journal dealing specifically with these topics. The journal • Provides information about activities and progress on the definition of computer standards, software quality, interfaces and methods, at national, European and international levels • Publishes critical comments on standards and standards activities • Disseminates user''s experiences and case studies in the application and exploitation of established or emerging standards, interfaces and methods • Offers a forum for discussion on actual projects, standards, interfaces and methods by recognised experts • Stimulates relevant research by providing a specialised refereed medium.