public static int Evaluate(List<int> poly, int x)
{
int y = poly[0];
GaloisField gf = new GaloisField();
for (int i = 1; i < poly.Count; i++)
{
y = gf.Multiply(y, x) ^ poly[i];
}
return y;
}
public static List<int> Multiply(List<int> poly1, List<int> poly2)
{
GaloisField gf = new GaloisField();
int count1 = poly1.Count;
int count2 = poly2.Count;
int[] r = new int[count1 + count2 - 1];
for (int j = 0; j < count2; j++)
{
for (int i = 0; i < count1; i++)
{
r[i + j] ^= gf.Multiply(poly1[i], poly2[j]);
}
}
return new List<int>(r);
}
public static List<int> Scale(List<int> poly, int x)
{
int count = poly.Count;
GaloisField gf = new GaloisField();
int[] r = new int[poly.Count];
//List<int> r = new List<int>(poly.Count);
for (int i = 0; i < count; i++)
{
r[i] = gf.Multiply(poly[i], x);
}
return new List<int>(r);
}