On the efficiency of Pollard's rho method for discrete logarithms

  • Authors:
  • Shi Bai;Richard P. Brent

  • Affiliations:
  • Australian National University, Canberra, ACT;Australian National University, Canberra, ACT

  • Venue:
  • CATS '08 Proceedings of the fourteenth symposium on Computing: the Australasian theory - Volume 77
  • Year:
  • 2008

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Abstract

Pollard's rho method is a randomized algorithm for computing discrete logarithms. It works by defining a pseudo-random sequence and then detecting a match in the sequence. Many improvements have been proposed, while few evaluation results and efficiency suggestions have been reported. This paper is devoted to a detailed study of the efficiency issues in Pollard's rho method. We describe an empirical performance analysis of several widely applied algorithms. This should provide a better combination of algorithms and a good choice of parameters for Pollard's rho method.