Paper 2024/241
Generalized Adaptor Signature Scheme: From Two-Party to N-Party Settings
Abstract
Adaptor signatures have attracted attention as a tool to ad-dress scalability and interoperability issues in blockchain applications, for example, such as atomic swaps for exchanging di˙erent cryptocur-rencies. Adaptor signatures can be constructed by extending of common digital signature schemes that both authenticate a message and disclose a secret witness to a speci˝c party. In Asiacrypt 2021, Aumayr et al. formulated the two-party adaptor signature as an independent crypto-graphic primitive. In this study, we extend the their adaptor signature scheme formulation to N party adaptor signature scheme, present its generic construction, and de˝ne the security to be satis˝ed. Next, we present a concrete construction based on Schnorr signatures and discuss the security properties.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Preprint.
- Keywords
- Digital SignaturesAdaptor Signatures
- Contact author(s)
-
kajita k-bu @ nhk or jp
ohtake g-fw @ nhk or jp
takagi @ mist i u-tokyo ac jp - History
- 2024-02-16: approved
- 2024-02-15: received
- See all versions
- Short URL
- https://ia.cr/2024/241
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/241, author = {Kaisei Kajita and Go Ohtake and Tsuyoshi Takagi}, title = {Generalized Adaptor Signature Scheme: From Two-Party to N-Party Settings}, howpublished = {Cryptology ePrint Archive, Paper 2024/241}, year = {2024}, note = {\url{https://eprint.iacr.org/2024/241}}, url = {https://eprint.iacr.org/2024/241} }