Fiat-Shamir Goes Tropical

Rémi Géraud-Stewart; David Naccache; Ofer Yifrach-Stav

Paper 2023/1954

Fiat-Shamir Goes Tropical

Rémi Géraud-Stewart

, Qualcomm Inc.

David Naccache, École Normale Supérieure - PSL

Ofer Yifrach-Stav

Abstract

In a recent ePrint, Brown and Monico propose new attacks on the tropical signature scheme of Chen, Grigoriev and Shpilrain. This note provides a new countermeasures against those attacks. Thereby, we (temporarily?) shift the fire from the signature algorithm to redirect attacks on the key and on tropical polynomial factorization.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Preprint.
Keywords: signatures tropical public-key cryptography
Contact author(s): remi geraud @ ens fr
david naccache @ ens fr
ofer friedman @ ens fr
History: 2023-12-27: last of 5 revisions; 2023-12-24: received; See all versions
Short URL: https://ia.cr/2023/1954
License: CC0

BibTeX

@misc{cryptoeprint:2023/1954,
      author = {Rémi Géraud-Stewart and David Naccache and Ofer Yifrach-Stav},
      title = {Fiat-Shamir Goes Tropical},
      howpublished = {Cryptology {ePrint} Archive, Paper 2023/1954},
      year = {2023},
      url = {https://eprint.iacr.org/2023/1954}
}