International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 30 August 2013

Przemysław Dąbrowski, Grzegorz Łabuzek, Tomasz Rachwalik, Janusz Szmidt
ePrint Report ePrint Report
Nonlinear feedback shift registers (NLFSRs) are used to construct pseudorandom generators for stream ciphers. Their theory is not so complete as that of linear feedback shift registers (LFSRs). In general, it is not known how to construct all NLFSRs with maximum period. The direct method is to search for such registers with suitable properties. Advanced technology of parallel computing has been applied both in software and hardware to search for maximum period NLFSRs having a fairly simple algebraic normal form.

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