International Association for Cryptologic Research

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Twinkle: Threshold Signatures from DDH with Full Adaptive Security

Authors:
Renas Bacho , CISPA Helmholtz Center for Information Security, Saarland University
Julian Loss , CISPA Helmholtz Center for Information Security
Stefano Tessaro , University of Washington
Benedikt Wagner , CISPA Helmholtz Center for Information Security, Saarland University
Chenzhi Zhu , University of Washington
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Presentation: Slides
Conference: EUROCRYPT 2024
Abstract: Sparkle is the first threshold signature scheme in the pairing-free discrete logarithm setting (Crites, Komlo, Maller, Crypto 2023) to be proven secure under adaptive corruptions. However, without using the algebraic group model, Sparkle's proof imposes an undesirable restriction on the adversary. Namely, for a signing threshold t
BibTeX
@inproceedings{eurocrypt-2024-33846,
  title={Twinkle: Threshold Signatures from DDH with Full Adaptive Security},
  publisher={Springer-Verlag},
  author={Renas Bacho and Julian Loss and Stefano Tessaro and Benedikt Wagner and Chenzhi Zhu},
  year=2024
}