Paper 2022/003
Merged with 2022/007
Rutchathon Chairattana-Apirom and Anna Lysyanskaya
Abstract
Blind signature schemes are one of the best and best-studied tools for privacy-preserving authentication. It has a blind signing protocol in which a signer learns nothing about the message being signed or the resulting signature; thus such a signature can serve as an anonymous authentication token. Thus, constructing efficient blind signatures secure under realistic cryptographic assumptions is an important goal.
A recent paper by Benhamouda, Lepoint, Loss, Orr\`u, and Raykova (Eurocrypt '21) showed that a large class of blind signature schemes secure in the stand-alone setting are no longer secure when multiple instances of the blind signing protocol are executed concurrently. The best known technique to salvage the security of such blind signatures was recently proposed by Katz, Loss, and Rosenberg (Asiacrypt '21). For the security parameter
Note: Merged with https://eprint.iacr.org/2022/007
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- blind signaturesdigital signaturesanonymity
- Contact author(s)
-
rutchathon c @ gmail com
anna @ cs brown edu - History
- 2022-03-15: revised
- 2022-01-01: received
- See all versions
- Short URL
- https://ia.cr/2022/003
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2022/003, author = {Rutchathon Chairattana-Apirom and Anna Lysyanskaya}, title = {Merged with 2022/007}, howpublished = {Cryptology {ePrint} Archive, Paper 2022/003}, year = {2022}, url = {https://eprint.iacr.org/2022/003} }