private static List <byte> _add_(List <byte> A, byte b, int idx = 0, byte rem = 0)
{
List <byte> result;
if (idx < A.Count)
{
short num = (short)(A[idx] + b);
A[idx] = (byte)(num % 256);
rem = (byte)((num - (short)A[idx]) % 255);
if (rem > 0)
{
result = ClassNames._add_(A, rem, idx + 1, 0);
return(result);
}
}
else
{
A.Add(b);
}
result = A;
return(result);
}
public static byte[] Multiply(this byte[] A, byte[] B)
{
List <byte> list = new List <byte>();
int num = 0;
for (int i = 0; i < A.Length; i++)
{
byte b = 0;
for (int j = 0; j < B.Length; j++)
{
short num2 = (short)(A[i] * B[j] + b);
b = (byte)(num2 >> 8);
byte b2 = (byte)num2;
num = i + j;
if (num < list.Count)
{
list = ClassNames._add_(list, b2, num, 0);
}
else
{
list.Add(b2);
}
}
if (b > 0)
{
if (num + 1 < list.Count)
{
list = ClassNames._add_(list, b, num + 1, 0);
}
else
{
list.Add(b);
}
}
}
return(list.ToArray());
}