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Generation of Pseudorandom Binary Sequences with Controllable Cryptographic Parameters

  • Amparo Fúster-Sabater
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6782)

Abstract

In this paper, a procedure of decomposition of nonlinearly filtered sequences in primary characteristic sequences has been introduced. Such a procedure allows one to analyze structural properties of the filtered sequences e.g. period and linear complexity, which are essential features for their possible application in cryptography. As a consequence of the previous decomposition, a simple constructive method that enlarges the number of known filtered sequences with guaranteed cryptographic parameters has been developed. The procedure here introduced does not impose any constraint on the characteristics of the nonlinear filter.

Keywords

stream cipher pseudorandom sequence nonlinear filter linear complexity period cryptography 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Amparo Fúster-Sabater
    • 1
  1. 1.Institute of Applied Physics, C.S.I.C.MadridSpain

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