public void MultiplicativeInverseShouldBeCalculationCorrect(byte number, MultiplicativeInverseCalculationWay way,
byte expectedInverse)
{
//arrange
var gfUnderTest = new GaloisField();
//act
var actualInverse = gfUnderTest.MultiplicativeInverse(number, way);
//assert
Assert.Equal(expectedInverse, actualInverse);
}
public byte MultiplicativeInverse(byte number, MultiplicativeInverseCalculationWay way)
{
if (number == 0)
{
throw new ArgumentOutOfRangeException();
}
return(way switch
{
MultiplicativeInverseCalculationWay.ExtendedEuclideanAlgorithm => MultiplicativeInverseUsingExtendedGCD(
number),
MultiplicativeInverseCalculationWay.Exponentiation => MultiplicativeInverseUsingExponentiation(number),
_ => throw new ArgumentOutOfRangeException()
});