Abdellah Mokrane

Université Paris 13 Nord, Île-de-France, France

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Publications (2)0 Total impact

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    ABSTRACT: In \cite{marjane2010}, we have introduced vectorial conception of FCSR's in Fibonacci mode. This conception allows us to easily analyze FCSR's over binary finite fields $\mathbb{F}_{2^{n}}$ for $n\geq 2$. In \cite{allailou2010}, we describe and study the corresponding Galois mode and use it to design a new stream cipher. In this paper, we introduce the Ring mode for vectorial FCSR, explain the analysis of such Feedback registers and illustrate with a simple example.
    Computing Research Repository - CORR. 03/2011;
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    ABSTRACT: Feedback with carry shift registers (FCSRs) have been introduced first by Goresky and Klapper, particularly as an alternative to linear feedback shift registers (LFSRs). Similarly to LFSRs, FCSRs have an underlying algebraic structure that facilitates their analysis, and their output sequences have many desirable statistical properties. Besides their direct applications as pseudorandom number generators, they have proven useful as building blocks for stream ciphers, but an FCSR should never be used by itself as keystream generator. To ovoid this problem, Arnault an Berger proposed to use Filtred FCSR. Weakness related to the representation structure allowded an efficient attack developed by Hell and Johansson. In this paper, we propose a new stream cipher based on a novel conception of pseudorandom generators Vectorial FCSR (VFCSR). This configuration allows an efficient resistance the above attack.
    Information Security Applications - 11th International Workshop, WISA 2010, Jeju Island, Korea, August 24-26, 2010, Revised Selected Papers; 01/2010

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2 Citations

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Institutions

  • 2010
    • Université Paris 13 Nord
      Île-de-France, France