Pseudorandom generators based on Lucas Sequences

Authors

  • A Di Porto Fondazione Ugo Bordoni, Rome, Italy
  • W Wolfowics Fondazione Ugo Bordoni, Rome, Italy

Abstract

Pseudo-random sequence generators are the heart of Stream-cipher systems. This work presents some design criteria for such generators. based on innovative methods. To this aim the Lucas Sequences, reduced modulo a prime p. are taken and suitably manipulated. Modular Exponentiation is the function used to attain the output sequences. The periodicity of the Lucas Sequences allows to define a lower
bound for the period of the generated sequences; actually our purpose is to ensure that the sequences which are generated have a period greater than a prefixed value. Furthermore the cryptographic strength of these sequences relies on the one-wayness of the discrete logarithm problem.

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Published

1993-02-18

Issue

Section

Volume 6-1993