Analysis of Xorrotation With Application to an HC-128 Variant
Författare
Redaktör
- Willy Susilo
- Yi Mu
- Jennifer Seberry
Summary, in English
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.
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.
Avdelning/ar
Publiceringsår
2012
Språk
Engelska
Sidor
419-425
Publikation/Tidskrift/Serie
LNCS
Volym
7372
Fulltext
- Available as PDF - 271 kB
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Dokumenttyp
Konferensbidrag
Förlag
Springer
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- RX
- probability distribution
- stream cipher
- HC-128
- cryptanalysis
- distinguisher
Conference name
ACISP 2012
Conference date
2012-07-09
Conference place
Wollongong, Australia
Status
Published
Forskningsgrupp
- Crypto and Security
ISBN/ISSN/Övrigt
- ISBN: 978-3-642-31447-6