Paper 2025/1109 Original: eprint.iacr.org/2025/1109 ↗

Kahrobaei--Koupparis DSS: universal forgery

Alexander Ushakov
Abstract

Regardless of the choice of parameters, knowledge of a single signed message, i.e., a pair message/signature, produced by Kahrobaei-Koupparis digital signature scheme is sufficient to forge a valid signature for any other message.

Metadata
Available format(s)
PDF
Category
Attacks and cryptanalysis
Publication info
Preprint.
History
2025-06-12: last updated
2025-06-12: published
Short URL
https://ia.cr/2025/1109
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2025/1109,
      author = {Alexander Ushakov},
      title = {Kahrobaei--Koupparis DSS: universal forgery},
      howpublished = {Cryptology {ePrint} Archive, Paper 2025/1109},
      year = {2025},
      url = {https://eprint.iacr.org/2025/1109}
}
Note: In order to protect the privacy of readers, this archive does not use cookies or embedded third party content.