paper
title
Equivalent Representations of the F-FCSR Keystream Generator.
authors
Simon Fischer, Willi Meier, and Dirk Stegemann.
publication
In SASC 2008 - The State of the Art of Stream Ciphers, Lausanne, Switzerland, February 13-14, 2008. Workshop record, pages 87-96.
Also in WMC 2008 - Second Workshop on Mathematical Cryptology, Santander, Spain, October 23-25, 2008.
abstract
In this technical report, we investigate the security of the eSTREAM phase 3 stream cipher candidate F-FCSR. Our analysis shows a link to an equivalent representation. We conclude that this other representation is not weaker than the original one and thus doesn't constitute a practical threat.