using System;

using System.Text;

using System.Security.Cryptography;

​

public class Program

{

    public static void Main()

    {

        var gen = new ASPNETMachineKeyGenerator();

​

        var validationKey = gen.GenValidationKey();

        var decryptionKey = gen.GenDecryptionKey();

​

        StringBuilder aspnet20machinekey = new StringBuilder();

​

        aspnet20machinekey.Append("<machineKey \n");

        aspnet20machinekey.Append("validationKey=\"" + validationKey + "\"\n");

        aspnet20machinekey.Append("decryptionKey=\"" + decryptionKey + "\"\n");

        aspnet20machinekey.Append("validation=\"SHA1\" decryption=\"AES\"\n");

        aspnet20machinekey.Append("/>\n");

​

        Console.WriteLine(aspnet20machinekey.ToString());

    }

}

​

// Define other methods and classes here

​

public class ASPNETMachineKeyGenerator

{

    public string GenValidationKey()

    {

        return getRandomKey(64);

    }

​

    public string GenDecryptionKey()

    {

        return getRandomKey(32);

    }

​

    string getRandomKey(int bytelength)

    {

        byte[] buff = new byte[bytelength];

        RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();

        rng.GetBytes(buff);

        StringBuilder sb = new StringBuilder(bytelength * 2);

        for (int i = 0; i < buff.Length; i++)

            sb.Append(string.Format("{0:X2}", buff[i]));

        return sb.ToString();

    }

}