public static void Invert(ulong[] x, ulong[] z)
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
if (Nat320.IsZero64(x))
{
throw new InvalidOperationException();
}
ulong[] array = Nat320.Create64();
ulong[] array2 = Nat320.Create64();
Square(x, array);
Multiply(array, x, array);
SquareN(array, 2, array2);
Multiply(array2, array, array2);
SquareN(array2, 4, array);
Multiply(array, array2, array);
SquareN(array, 8, array2);
Multiply(array2, array, array2);
Square(array2, array2);
Multiply(array2, x, array2);
SquareN(array2, 17, array);
Multiply(array, array2, array);
Square(array, array);
Multiply(array, x, array);
SquareN(array, 35, array2);
Multiply(array2, array, array2);
SquareN(array2, 70, array);
Multiply(array, array2, array);
Square(array, array);
Multiply(array, x, array);
SquareN(array, 141, array2);
Multiply(array2, array, array2);
Square(array2, z);
}
public static void Invert(ulong[] x, ulong[] z)
{
if (Nat320.IsZero64(x))
{
throw new InvalidOperationException();
}
// Itoh-Tsujii inversion
ulong[] t0 = Nat320.Create64();
ulong[] t1 = Nat320.Create64();
Square(x, t0);
Multiply(t0, x, t0);
SquareN(t0, 2, t1);
Multiply(t1, t0, t1);
SquareN(t1, 4, t0);
Multiply(t0, t1, t0);
SquareN(t0, 8, t1);
Multiply(t1, t0, t1);
Square(t1, t1);
Multiply(t1, x, t1);
SquareN(t1, 17, t0);
Multiply(t0, t1, t0);
Square(t0, t0);
Multiply(t0, x, t0);
SquareN(t0, 35, t1);
Multiply(t1, t0, t1);
SquareN(t1, 70, t0);
Multiply(t0, t1, t0);
Square(t0, t0);
Multiply(t0, x, t0);
SquareN(t0, 141, t1);
Multiply(t1, t0, t1);
Square(t1, z);
}