publication . Other literature type . Article . 2007

A Distinguish Attack On Cosvd Cipher

Ha, Mohammad Ali Orumiehchi; R. Mirghadri;
Open Access English
  • Published: 23 Nov 2007
  • Publisher: Zenodo
Abstract
The COSvd Ciphers has been proposed by Filiol and others (2004). It is a strengthened version of COS stream cipher family denoted COSvd that has been adopted for at least one commercial standard. We propose a distinguish attack on this version, and prove that, it is distinguishable from a random stream. In the COSvd Cipher used one S-Box (10×8) on the final part of cipher. We focus on S-Box and use weakness this S-Box for distinguish attack. In addition, found a leak on HNLL that the sub s-boxes don-t select uniformly. We use this property for an Improve distinguish attack.
Subjects
free text keywords: Stream cipher, COSvd cipher, distinguish attack, nonlinear feedback shift registers, chaotic layer.
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Zenodo
Other literature type . 2007
Provider: Datacite
ZENODO
Article . 2007
Provider: ZENODO
ZENODO
Article . 2007
Provider: ZENODO
Zenodo
Other literature type . 2007
Provider: Datacite
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publication . Other literature type . Article . 2007

A Distinguish Attack On Cosvd Cipher

Ha, Mohammad Ali Orumiehchi; R. Mirghadri;