C# machine key 생성하기

Visual C# .NET을 사용하여 폼 인증에서 사용할 키를 만드는 방법
http://support.microsoft.com/default.aspx?scid=312906

using System;
using System.Text;
using System.Security.Cryptography;

namespace Crypto
{
    public class KeyCreator
    {
        public static void Main(String[] args)
        {			
            String[] commandLineArgs = System.Environment.GetCommandLineArgs();
            string decryptionKey = CreateKey(System.Convert.ToInt32(commandLineArgs[1]));
            string validationKey = CreateKey(System.Convert.ToInt32(commandLineArgs[2]));

            Console.WriteLine("", validationKey, decryptionKey);
        }	

        static String CreateKey(int numBytes) 
        {
            RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
            byte[] buff = new byte[numBytes];

            rng.GetBytes(buff);
            return BytesToHexString(buff);
        }

        static String BytesToHexString(byte[] bytes) 
        {
            StringBuilder hexString = new StringBuilder(64);

            for (int counter = 0; counter < bytes.Length; counter++) 
            {
                hexString.Append(String.Format("{0:X2}", bytes[counter]));
            }
            return hexString.ToString();
        }
    }
}