/**
* Returns x times the inverse of y mod p.
*
* @param x an element of the field
* @param y an element of the field
* @return x / y mod p
*/
public Integer divide(int x, int y) {
Integer inv = ModMath.inverse(y, p);
if (inv != null) return ModMath.multiply(x, inv, p);
return null;
}
public int multiply(int x, int y) {
return ModMath.multiply(x, y, p);
}
