From 5-pass MQ-based identification to MQ-based signatures

@article{Hlsing2016From5M,
  title={From 5-pass MQ-based identification to MQ-based signatures},
  author={Andreas H{\"u}lsing and Joost Rijneveld and Simona Samardjiska and Peter Schwabe},
  journal={IACR Cryptology ePrint Archive},
  year={2016},
  volume={2016},
  pages={708}
}
This paper presents MQDSS, the first signature scheme with a security reduction based on the problem of solving a multivariate system of quadratic equations (MQ problem). In order to construct this scheme we give a new security reduction for the Fiat-Shamir transform from a large class of 5-pass identification schemes and show that a previous attempt from the literature to obtain such a proof does not achieve the desired goal. We give concrete parameters for MQDSS and provide a detailed… CONTINUE READING
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Hybrid approach

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