public ECFieldElement multiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y) {
long[] ax = this.x, bx = ((SecT113FieldElement) b).x;
long[] xx = ((SecT113FieldElement) x).x, yx = ((SecT113FieldElement) y).x;
long[] tt = Nat128.createExt64();
SecT113Field.multiplyAddToExt(ax, bx, tt);
SecT113Field.multiplyAddToExt(xx, yx, tt);
long[] z = Nat128.create64();
SecT113Field.reduce(tt, z);
return new SecT113FieldElement(z);
}
public SecT113FieldElement(BigInteger x) {
if (x == null || x.signum() < 0 || x.bitLength() > 113) {
throw new IllegalArgumentException("x value invalid for SecT113FieldElement");
}
this.x = SecT113Field.fromBigInteger(x);
}
public ECFieldElement squarePow(int pow) {
if (pow < 1) {
return this;
}
long[] z = Nat128.create64();
SecT113Field.squareN(x, pow, z);
return new SecT113FieldElement(z);
}
public ECFieldElement multiply(ECFieldElement b) {
long[] z = Nat128.create64();
SecT113Field.multiply(x, ((SecT113FieldElement) b).x, z);
return new SecT113FieldElement(z);
}
public ECFieldElement addOne() {
long[] z = Nat128.create64();
SecT113Field.addOne(x, z);
return new SecT113FieldElement(z);
}
public ECFieldElement sqrt() {
long[] z = Nat128.create64();
SecT113Field.sqrt(x, z);
return new SecT113FieldElement(z);
}
