Forging Tropical Signatures

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Abstract

A recent preprint  [3] suggests the use of polynomials over a tropical algebra to construct a digital signature scheme “based on” the problem of factoring such polynomials, which is known to be NP-hard. This short note presents two very efficient forgery attacks on the scheme, bypassing the need to factorize tropical polynomials and thus demonstrating that security in fact rests on a different, empirically easier problem.

Original languageEnglish
Title of host publicationApplied Cryptography and Network Security Workshops - ACNS 2024 Satellite Workshops, AIBlock, AIHWS, AIoTS, SCI, AAC, SiMLA, LLE, and CIMSS, 2024, Proceedings
EditorsMartin Andreoni
PublisherSpringer Science and Business Media Deutschland GmbH
Pages3-7
Number of pages5
ISBN (Print)9783031614880
DOIs
StatePublished - 2024
EventSatellite Workshops held in parallel with the 22nd International Conference on Applied Cryptography and Network Security, ACNS 2024 - Abu Dhabi, United Arab Emirates
Duration: 5 Mar 20248 Mar 2024

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume14587 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

ConferenceSatellite Workshops held in parallel with the 22nd International Conference on Applied Cryptography and Network Security, ACNS 2024
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period5/03/248/03/24

Keywords

  • Cryptanalysis
  • digital signatures
  • factorization
  • tropical algebra

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