Generating pairing-friendly parameters for the CM construction of genus 2 curves over prime fields

  • Authors:
  • Kristin Lauter;Ning Shang

  • Affiliations:
  • Microsoft Research, Redmond, USA 98052;Qualcomm Inc., San Diego, USA 92121

  • Venue:
  • Designs, Codes and Cryptography
  • Year:
  • 2013

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Abstract

We present two contributions in this paper. First, we give a quantitative analysis of the scarcity of pairing-friendly genus 2 curves. This result is an improvement relative to prior work which estimated the density of pairing-friendly genus 2 curves heuristically. Second, we present a method for generating pairing-friendly parameters for which $${\rho\approx 8}$$ , where 驴 is a measure of efficiency in pairing-based cryptography. This method works by solving a system of equations given in terms of coefficients of the Frobenius element. The algorithm is easy to understand and implement.