(2022) The Abe-Okamoto Partially Blind Signature Scheme Revisited.
In: ASIACRYPT 2022, 5-9 December 2022, Taipei, Taiwan.
Conference:
ASIACRYPT International Conference on the Theory and Application of Cryptology and Information Security
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2022-1232.pdf - Accepted Version Download (687kB) | Preview |
Abstract
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.
| Item Type: | Conference or Workshop Item (A Paper) (Paper) |
|---|---|
| Divisions: | Julian Loss (JL) |
| Conference: | ASIACRYPT International Conference on the Theory and Application of Cryptology and Information Security |
| Depositing User: | Julian Loss |
| Date Deposited: | 21 Oct 2022 07:07 |
| Last Modified: | 21 Oct 2022 07:07 |
| Primary Research Area: | NRA1: Trustworthy Information Processing |
| URI: | https://publications.cispa.saarland/id/eprint/3865 |
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