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An efficient state recovery attack on X-FCSR-256

Redaktör:
  • Orr Dunkelman
Publiceringsår: 2009
Språk: Engelska
Sidor: 23-37
Publikation/Tidskrift/Serie: Fast Software Encryption/Lecture Notes in Computer Science
Volym: 5665
Dokumenttyp: Konferensbidrag
Förlag: Springer

Sammanfattning

We describe a state recovery attack on the X-FCSR-256 stream cipher of total complexity at most $2^{57.6}$. This complexity is achievable by requiring $2^{49.3}$ output blocks with an amortized calculation effort of at most $2^{8.3}$ table lookups per output block using no more than $2^{33}$ table entries of precomputational storage.

Disputation

Nyckelord

  • Technology and Engineering
  • FCSR
  • X-FCSR
  • cryptanalysis
  • stream cipher
  • state recovery

Övriga

16th International Workshop, FSE 2009
2009-02-22/2009-02-25
Leuven, Belgium
Published
Yes
  • Crypto and Security
  • ISBN: 978-3-642-03316-2

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