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Cryptanalysis of Achterbahn-Version 2

Publiceringsår: 2007
Språk: Engelska
Sidor: 45-55
Publikation/Tidskrift/Serie: Selected Areas in Cryptography / Lecture notes in computer science)
Volym: 4356
Dokumenttyp: Konferensbidrag
Förlag: Springer

Sammanfattning

Achterbahn is one of the stream cipher proposals in the eSTREAM project. After the first version had been successfully cryptanalyzed, the second version, denoted Achterbahn-Version 2, was proposed. This paper demonstrates an attack on this second version. In the attack, a quadratic approximation of the output function is considered. The attack uses less keystream bits than the upper limit given by the designers and the computational complexity is significantly less than exhaustive key search.

Disputation

Nyckelord

  • Technology and Engineering
  • stream ciphers
  • Achterbahn
  • key recovery attack
  • cryptanalysis

Övriga

13th International Workshop, SAC 2006
2006-08-17/2006-08-18
Montreal, Canada
Published
Yes
  • ISSN: 0302-9743
  • ISBN: 978-3-540-74461-0

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