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Cryptanalysis of Achterbahn

In English

Författare

Summary, in English

We present several attacks against the Achterbahn stream cipher, which was proposed to the eSTREAM competition. We can break the reduced and the full version with complexity of 2 55 and 2 61 steps. Extensions of our attacks are also described to break modified versions of the Achterbahn stream cipher, which were proposed following the publication of preliminary cryptanalysis results. These attacks highlight some problems in the design principle of Achterbahn, i.e., combining the outputs of several nonlinear (but small) shift registers using a nonlinear (but rather sparse) output function.

Publiceringsår

2006

Språk

Engelska

Sidor

1-14

Publikation/Tidskrift/Serie

Fast Software Encryption (Lecture Notes in Computer Science)

Volym

4047

Dokumenttyp

Konferensbidrag

Förlag

Springer

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

13th International Workshop, FSE 2006

Conference date

2006-03-15 - 2006-03-17

Conference place

Graz, Austria

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0302-9743
  • ISSN: 1611-3349
  • ISBN: 978-3-540-36597-6