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Paper: A short comment on the affine parts of SFLASH^{v3}

Authors:
Willi Geiselmann
Rainer Steinwandt
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URL: http://eprint.iacr.org/2003/220
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Abstract: In [http://eprint.iacr.org/2003/211/] SFLASH^{v3} is presented, which supersedes SFLASH^{v2}, one of the digital signature schemes in the NESSIE Portfolio of recommended cryptographic primitives. We show that a known attack against the affine parts of SFLASH^{v1} and SFLASH^{v2} carries over immediately to the new version SFLASH^{v3}: The 861 bit representing the affine parts of the secret key can easily be derived from the public key alone.
BibTeX
@misc{eprint-2003-11933,
  title={A short comment on the affine parts of SFLASH^{v3}},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / digital signatures, cryptanalysis},
  url={http://eprint.iacr.org/2003/220},
  note={ steinwan@ira.uka.de 12335 received 10 Oct 2003},
  author={Willi Geiselmann and Rainer Steinwandt},
  year=2003
}