Best code snippets using org.bouncycastle.math.ec.MixedNafR2LMultiplier.configureCurve(Showing top 2 results out of 315)

protected ECPoint multiplyPositive(ECPoint p, BigInteger k)
{
  ECCurve curveOrig = p.getCurve();
  ECCurve curveAdd = configureCurve(curveOrig, additionCoord);
  ECCurve curveDouble = configureCurve(curveOrig, doublingCoord);
  int[] naf = WNafUtil.generateCompactNaf(k);
  ECPoint Ra = curveAdd.getInfinity();
  ECPoint Td = curveDouble.importPoint(p);
  int zeroes = 0;
  for (int i = 0; i < naf.length; ++i)
  {
    int ni = naf[i];
    int digit = ni >> 16;
    zeroes += ni & 0xFFFF;
    Td = Td.timesPow2(zeroes);
    ECPoint Tj = curveAdd.importPoint(Td);
    if (digit < 0)
    {
      Tj = Tj.negate();
    }
    Ra = Ra.add(Tj);
    zeroes = 1;
  }
  return curveOrig.importPoint(Ra);
}

protected ECPoint multiplyPositive(ECPoint p, BigInteger k)
{
  ECCurve curveOrig = p.getCurve();
  ECCurve curveAdd = configureCurve(curveOrig, additionCoord);
  ECCurve curveDouble = configureCurve(curveOrig, doublingCoord);
  int[] naf = WNafUtil.generateCompactNaf(k);
  ECPoint Ra = curveAdd.getInfinity();
  ECPoint Td = curveDouble.importPoint(p);
  int zeroes = 0;
  for (int i = 0; i < naf.length; ++i)
  {
    int ni = naf[i];
    int digit = ni >> 16;
    zeroes += ni & 0xFFFF;
    Td = Td.timesPow2(zeroes);
    ECPoint Tj = curveAdd.importPoint(Td);
    if (digit < 0)
    {
      Tj = Tj.negate();
    }
    Ra = Ra.add(Tj);
    zeroes = 1;
  }
  return curveOrig.importPoint(Ra);
}