Abstract
Payment channel network (PCN) has become an indispensable mechanism to resolve scalability issues in blockchain-based cryptocurrencies. On the other hand, PCNs do not provide adequate security and privacy guarantee. Most of the existing payment schemes leak information about payer or payee to the nodes in the payment path. To address this issue, we propose a simple but effective, multi-hop, anonymous, and privacy-preserving PCN (MAPPCN). MAPPCN construction is based on Elliptic curve cryptography (ECC) and is proved to be secure while achieving payment path privacy, sender, and receiver anonymity. MAPPCN can be performed in \((3 \cdot n + 5)\) Elliptic curve scalar multiplication (ECSM) operations for an off-chain payment operation.
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Notes
- 1.
Bitcoin transactions chart per day. https://www.blockchain.com/en/charts/n-transactions.
- 2.
Ethereum transactions chart per day. https://etherscan.io/chart/tx.
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Acknowledgement
We acknowledge the Ministry of Human Resource Development, Government of India for providing fellowship under Ph. D. programme to complete this work.
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Tripathy, S., Mohanty, S.K. (2020). MAPPCN: Multi-hop Anonymous and Privacy-Preserving Payment Channel Network. In: Bernhard, M., et al. Financial Cryptography and Data Security. FC 2020. Lecture Notes in Computer Science(), vol 12063. Springer, Cham. https://doi.org/10.1007/978-3-030-54455-3_34
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