Cryptanalysis of the Huang-Liu-Yang Cryptosystem from PKC 2012

Yosuke Todo; Keita Xagawa

Paper 2013/481

Cryptanalysis of the Huang-Liu-Yang Cryptosystem from PKC 2012

Yosuke Todo and Keita Xagawa

Abstract

This short note describes a key-recovery attack against a multivariate quadratic cryptosystem proposed by Huang, Liu, and Yang (PKC 2012). Our attack is running lattice-basis reduction algorithms on a lattice constructed from the keys in the cryptosystem. The attack takes less than 20 minutes for the proposed parameter sets which are expected to be 80-bit and 128-bit security.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: cryptanalysis multivariate cryptography lattice algorithm
Contact author(s): xagawa keita @ lab ntt co jp
History: 2013-08-14: received
Short URL: https://ia.cr/2013/481
License: CC BY

BibTeX

@misc{cryptoeprint:2013/481,
      author = {Yosuke Todo and Keita Xagawa},
      title = {Cryptanalysis of the Huang-Liu-Yang Cryptosystem from {PKC} 2012},
      howpublished = {Cryptology {ePrint} Archive, Paper 2013/481},
      year = {2013},
      url = {https://eprint.iacr.org/2013/481}
}