Cryptanalysis of the new TTS scheme in CHES 2004

Jintai Ding University of Cincinnati, Cincinnati, 45220, OH, USA Dieter Schmidt University of Cincinnati, Cincinnati, 45220, OH, USA Zhijun Yin University of Cincinnati, Cincinnati, 45220, OH, USA

TBD mathscidoc:2207.43026

International Journal of Information Security, 5, (4), 231–240, 2006.4
We combine the method of searching for an invariant subspace of the unbalanced Oil and Vinegar signature scheme and the Minrank method to defeat the new TTS signature scheme, which was suggested for low-cost smart card applications at CHES 2004. We show that the attack complexity is less than 2^{50}.
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@inproceedings{jintai2006cryptanalysis,
  title={Cryptanalysis of the new TTS scheme in CHES 2004},
  author={Jintai Ding, Dieter Schmidt, and Zhijun Yin},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220711123657690725603},
  booktitle={International Journal of Information Security},
  volume={5},
  number={4},
  pages={231–240},
  year={2006},
}
Jintai Ding, Dieter Schmidt, and Zhijun Yin. Cryptanalysis of the new TTS scheme in CHES 2004. 2006. Vol. 5. In International Journal of Information Security. pp.231–240. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220711123657690725603.
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