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Analysis of Xorrotation With Application to an HC-128 Variant

Redaktör:
  • Willy Susilo
  • Yi Mu
  • Jennifer Seberry
Publiceringsår: 2012
Språk: Engelska
Sidor: 419-425
Publikation/Tidskrift/Serie: LNCS
Volym: 7372
Dokumenttyp: Konferensbidrag
Förlag: Springer

Sammanfattning

Many cryptographic primitives rely on word rotations (R) and xor (X) to provide proper mixing. We give RX-system mixing a very general treatment and deduce some theoretical results on related probability distributions.
Pure RX-systems are easy to break, so we show how to apply our theory to a more complex system that uses RX operations in combination with S-boxes.
We construct an impractical (keystream complexity 2^{90.9}), but new and non-trivial distinguisher for a variant of HC-128 for which modular addition is replaced with xor.

Disputation

Nyckelord

  • Technology and Engineering
  • RX
  • probability distribution
  • stream cipher
  • HC-128
  • cryptanalysis
  • distinguisher

Övriga

ACISP 2012
2012-07-09
Wollongong, Australia
Published
Yes
  • Crypto and Security
  • ISBN: 978-3-642-31447-6

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