Paper 2024/992

An analysis of the Crossbred Algorithm for the MQ Problem

Damien Vidal, University of Picardie Jules Verne
Sorina Ionica, University of Picardie Jules Verne
Claire Delaplace, University of Picardie Jules Verne
Abstract

The Crossbred algorithm is currently the state-of-the-art method for solving overdetermined multivariate polynomial systems over $\mathbb{F}_2$. Since its publication in 2015, several record breaking implementations have been proposed and demonstrate the power of this hybrid approach. Despite these practical results, the complexity of this algorithm and the choice of optimal parameters for it are difficult open questions. In this paper, we prove a bivariate generating series for potentially admissible parameters of the Crossbred algorithm.

Metadata
Available format(s)
PDF
Category
Attacks and cryptanalysis
Publication info
Published by the IACR in CIC 2024
DOI
https://doi.org/10.62056/ak86cy7qiu
Keywords
Gröbner basispolynomial systemMQ problemexhaustive searchCrossbred
Contact author(s)
damien vidal @ u-picardie fr
sorina ionica @ u-picardie fr
claire delaplace @ u-picardie fr
History
2024-10-10: last of 2 revisions
2024-06-19: received
See all versions
Short URL
https://ia.cr/2024/992
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2024/992,
      author = {Damien Vidal and Sorina Ionica and Claire Delaplace},
      title = {An analysis of the Crossbred Algorithm for the {MQ} Problem},
      howpublished = {Cryptology {ePrint} Archive, Paper 2024/992},
      year = {2024},
      doi = {https://doi.org/10.62056/ak86cy7qiu},
      url = {https://eprint.iacr.org/2024/992}
}
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