Inversion in finite fields using logarithmic depth

  • Authors:
  • Joachim von zur Gathen

  • Affiliations:
  • -

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 1990

Quantified Score

Hi-index 0.00

Visualization

Abstract

Litow & Davida (1988) show that inverses in large finite fields of small characteristicp, say p=2, can be computed by Boolean circuits of (order-optimal) logarithmic depth. We note that their numerical approach can also be implemented purely algebraically, and that the resulting much simpler algorithm yields, also for large p, both arithmetic and Boolean reductions of inversion in F"p"n to inversion in F"p.