Projects per year
Abstract
Payment channels have been a promising solution to blockchain scalability. While payment channels for script-empowered blockchains (such as Bitcoin and Ethereum) have been well studied, developing payment channels for scriptless blockchains (such as Monero) is considered challenging. In particular, nabling bidirectional payment on scriptless blockchains remains an open challenge. This work closes this gap by providing AuxChannel, the first bi-directional payment channel protocol for scriptless blockchains, meaning that building payment channels only requires the support of verifiably encrypted signature (aka adaptor signature) on the underlying blockchain. AuxChannel leverages verifiably encrypted signature to create a commitment for each off-chain payment and deploys a verifiable decentralised key escrow service to resolve dispute. To enable efficient construction of AuxChannel, we introduce a new cryptographic primitive, named Consecutive Verifiably Encrypted Signature (CVES), as a core building block and it can also be of independent interest for other applications. We provide and implement a provably secure instantiation on Schnorr-based CVES. We also provide a formal security analysis on the security of the AuxChannel.
Original language | English |
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Title of host publication | Proceedings of the 2022 ACM Asia Conference on Computer and Communications Security |
Editors | Minoru Kuribayashi |
Place of Publication | New York NY USA |
Publisher | Association for Computing Machinery (ACM) |
Pages | 138-152 |
Number of pages | 15 |
ISBN (Electronic) | 9781450391405 |
DOIs | |
Publication status | Published - 2022 |
Event | ACM ASIA Conference on Computer and Communications Security 2022 - Online, Nagasaki, Japan Duration: 30 May 2022 → 3 Jun 2022 Conference number: 17th https://dl.acm.org/doi/proceedings/10.1145/3488932 (Proceedings) https://asiaccs2022.conferenceservice.jp/ (Website) |
Conference
Conference | ACM ASIA Conference on Computer and Communications Security 2022 |
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Abbreviated title | ASIA CCS 2022 |
Country/Territory | Japan |
City | Nagasaki |
Period | 30/05/22 → 3/06/22 |
Internet address |
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Keywords
- payment channel
- scalability
- scriptless blockchain
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Scalable & Accountable Privacy-Preserving Blockchain with Enhanced Security
Liu, J., Steinfeld, R. & Yu, J.
25/05/23 → 24/05/26
Project: Research
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A Scalable and Adaptive-Resilient Blockchain
Yu, J.
Australian Research Council (ARC)
28/07/21 → 28/07/24
Project: Research