Kahrobaei--Koupparis DSS: universal forgery

Alexander Ushakov

Paper 2025/1109

Kahrobaei--Koupparis DSS: universal forgery

Alexander Ushakov

, Stevens Institute of Technology

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.
Keywords: Group-based cryptography digital signature.
Contact author(s): aushakov @ stevens edu
History: 2025-06-13: approved; 2025-06-12: received; See all versions
Short URL: https://ia.cr/2025/1109
License: CC BY

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}
}