On multiplication in finite fields

  • Authors:
  • Murat Cenk;Ferruh Özbudak

  • Affiliations:
  • Department of Mathematics and Computer Science, Cankaya University, Balgat, Ankara, Turkey;Department of Mathematics and Institute of Applied Mathematics, Middle East Technical University, Ankara, Turkey

  • Venue:
  • Journal of Complexity
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

We present a method for multiplication in finite fields which gives multiplication algorithms with improved or best known bilinear complexities for certain finite fields. Our method generalizes some earlier methods and combines them with the recently introduced complexity notion M@^"q(@?), which denotes the minimum number of multiplications needed in F"q in order to obtain the coefficients of the product of two arbitrary @?-term polynomials modulo x^@? in F"q[x]. We study our method for the finite fields F"q"^"n, where 2@?n@?18 and q=2,3,4 and we improve or reach the currently best known bilinear complexities. We also give some applications in cryptography.