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Paper: An Analysis of the Hermes8 Stream Ciphers

Authors:
Steve Babbage
Carlos Cid
Norbert Pramstaller
Havard Raddum
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URL: http://eprint.iacr.org/2006/269
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Abstract: Hermes8 is one of the stream ciphers submitted to the ECRYPT Stream Cipher Project (eSTREAM). In this paper we present an analysis of the Hermes8 stream ciphers. In particular, we show an attack on the latest version of the cipher (Hermes8F), which requires very few known keystream bytes and recovers the cipher secret key in less than a second on a normal PC. Furthermore, we make some remarks on the cipher's key schedule and discuss some properties of ciphers with similar algebraic structure to Hermes8.
BibTeX
@misc{eprint-2006-21761,
  title={An Analysis of the Hermes8 Stream Ciphers},
  booktitle={IACR Eprint archive},
  keywords={Hermes8, Stream Cipher, Cryptanalysis.},
  url={http://eprint.iacr.org/2006/269},
  note={Presented at ACISP 2007. carlos.cid@rhul.ac.uk 13692 received 11 Aug 2006, last revised 28 Jun 2007},
  author={Steve Babbage and Carlos Cid and Norbert Pramstaller and Havard Raddum},
  year=2006
}