Algebraic analysis of Trivium-like ciphers

@article{Teo2013AlgebraicAO,
  title={Algebraic analysis of Trivium-like ciphers},
  author={Sui-Guan Teo and Kenneth Koon-Ho Wong and Harry Bartlett and Leonie Ruth Simpson and Ed Dawson},
  journal={IACR Cryptology ePrint Archive},
  year={2013},
  volume={2013},
  pages={240}
}
Trivium is a bit-based stream cipher in the final portfolio of the eSTREAM project. In this paper, we apply the approach of Berbain et al. to Trivium-like ciphers and perform new algebraic analyses on them, namely Trivium and its reduced versions: Trivium-N , Bivium-A and Bivium-B. In doing so, we answer an open question in the literature. We demonstrate a new algebraic attack on Bivium-A. This attack requires less time and memory than previous techniques which use the F4 algorithm to recover… CONTINUE READING

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