- Title
- Anonymous Asynchronous Payment Channel from k-Time Accountable Assertion
- Creator
- Tian, Yangguang; Li, Yingjiu; Sengupta, Binanda; Li, Nan; Yu, Yong
- Relation
- 18th International Conference on Cryptology and Network Security. Proceedings of the 18th International Conference on Cryptology and Network Security, CANS 2019 (Fuzhou, China 25-27 October, 2019) p. 512-524
- Publisher Link
- http://dx.doi.org/10.1007/978-3-030-31578-8_28
- Publisher
- Springer
- Resource Type
- conference paper
- Date
- 2019
- Description
- Accountable assertion enables a payer to make off-chain payments to a payee, and at the same time, the payer’s secret credentials can be revealed if she equivocates (i.e., makes conflicting statements to others). In this paper, we introduce a new construction of accountable assertion that allows an assertion to be accountable for k times. We also present a new construction of anonymous payment channels for the cryptocurrency Bitcoin that allows a payer with k-time accountable assertions to anonymously make off-chain payments to the payee. In particular, we define formal security models for the new constructions, we also prove that the k-time assertion can achieve strong secrecy, and the asynchronous payment channel can achieve anonymity and untraceability. The proposed anonymous payment channel with k-time accountable assertions ensures that: (1) the payee can anonymously receive funds at asynchronous points of sale, and (2) the payee can trace the real identities of payers when they equivocate, and penalize them afterward.
- Subject
- k-time accountability; anonymity; untraceability; payment channel
- Identifier
- http://hdl.handle.net/1959.13/1446004
- Identifier
- uon:42731
- Identifier
- ISBN:9783030315771
- Language
- eng
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