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The Abe-Okamoto Partially Blind Signature Scheme Revisited

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conference contribution
posted on 2023-11-29, 18:26 authored by Julia Kastner, Julian LossJulian Loss, Jiayu Xu
Partially blind signatures, an extension of ordinary blind sig- natures, are a primitive with wide applications in e-cash and electronic voting. One of the most efficient schemes to date is the one by Abe and Okamoto (CRYPTO 2000), whose underlying idea — the OR-proof technique — has served as the basis for several works. We point out several subtle flaws in the original proof of security, and provide a new detailed and rigorous proof, achieving similar bounds as the original work. We believe our insights on the proof strategy will find useful in the security analyses of other OR-proof-based schemes.

History

Preferred Citation

Julia Kastner, Julian Loss and Jiayu Xu. The Abe-Okamoto Partially Blind Signature Scheme Revisited. In: International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT). 2022.

Primary Research Area

  • Algorithmic Foundations and Cryptography

Name of Conference

International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT)

Legacy Posted Date

2022-10-21

Open Access Type

  • Unknown

BibTeX

@inproceedings{cispa_all_3865, title = "The Abe-Okamoto Partially Blind Signature Scheme Revisited", author = "Kastner, Julia and Loss, Julian and Xu, Jiayu", booktitle="{International Conference on the Theory and Application of Cryptology and Information Security (ASIACRYPT)}", year="2022", }

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