public override ECFieldElement Add(ECFieldElement b)
{
LongArray longArray = x.Copy();
F2mFieldElement f2mFieldElement = (F2mFieldElement)b;
longArray.AddShiftedByWords(f2mFieldElement.x, 0);
return(new F2mFieldElement(m, ks, longArray));
}
public override ECFieldElement Add(
ECFieldElement b)
{
// No check performed here for performance reasons. Instead the
// elements involved are checked in ECPoint.F2m
// checkFieldElements(this, b);
LongArray iarrClone = this.x.Copy();
F2mFieldElement bF2m = (F2mFieldElement)b;
iarrClone.AddShiftedByWords(bF2m.x, 0);
return(new F2mFieldElement(m, ks, iarrClone));
}
public override ECFieldElement SquarePlusProduct(ECFieldElement x, ECFieldElement y)
{
LongArray longArray = this.x;
LongArray longArray2 = ((F2mFieldElement)x).x;
LongArray other = ((F2mFieldElement)y).x;
LongArray longArray3 = longArray.Square(m, ks);
LongArray other2 = longArray2.Multiply(other, m, ks);
if (longArray3 == longArray)
{
longArray3 = longArray3.Copy();
}
longArray3.AddShiftedByWords(other2, 0);
longArray3.Reduce(m, ks);
return(new F2mFieldElement(m, ks, longArray3));
}
public override ECFieldElement SquarePlusProduct(ECFieldElement x, ECFieldElement y)
{
LongArray ax = this.x, xx = ((F2mFieldElement)x).x, yx = ((F2mFieldElement)y).x;
LongArray aa = ax.Square(m, ks);
LongArray xy = xx.Multiply(yx, m, ks);
if (aa == ax)
{
aa = (LongArray)aa.Copy();
}
aa.AddShiftedByWords(xy, 0);
aa.Reduce(m, ks);
return(new F2mFieldElement(m, ks, aa));
}
public override ECFieldElement MultiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
{
LongArray ax = this.x, bx = ((F2mFieldElement)b).x, xx = ((F2mFieldElement)x).x, yx = ((F2mFieldElement)y).x;
LongArray ab = ax.Multiply(bx, m, ks);
LongArray xy = xx.Multiply(yx, m, ks);
if (ab == ax || ab == bx)
{
ab = (LongArray)ab.Copy();
}
ab.AddShiftedByWords(xy, 0);
ab.Reduce(m, ks);
return(new F2mFieldElement(m, ks, ab));
}
public override ECFieldElement MultiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
{
LongArray longArray = this.x;
LongArray longArray2 = ((F2mFieldElement)b).x;
LongArray longArray3 = ((F2mFieldElement)x).x;
LongArray other = ((F2mFieldElement)y).x;
LongArray longArray4 = longArray.Multiply(longArray2, m, ks);
LongArray other2 = longArray3.Multiply(other, m, ks);
if (longArray4 == longArray || longArray4 == longArray2)
{
longArray4 = longArray4.Copy();
}
longArray4.AddShiftedByWords(other2, 0);
longArray4.Reduce(m, ks);
return(new F2mFieldElement(m, ks, longArray4));
}