using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Security.Cryptography;

using System.IO;

public class Program

{

    public string Password = "@57#13";

    public string Encrypt(string toEncrypt, string key)

    {

        try

        {

            byte[] keyArray;

            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);

            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

            keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

            tdes.Key = keyArray;

            tdes.Mode = CipherMode.ECB;

            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateEncryptor();

            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

​

            return Convert.ToBase64String(resultArray, 0, resultArray.Length);

        }

        catch { return ""; }

    }

​

    public string Decrypt(string toDecrypt, string key)

    {

        try

        {

            byte[] keyArray;

            byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);

            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

            keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));

            TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

            tdes.Key = keyArray;

            tdes.Mode = CipherMode.ECB;

            tdes.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = tdes.CreateDecryptor();

            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return UTF8Encoding.UTF8.GetString(resultArray);

        }

        catch { return ""; }

    }

    public void Main()

    {

        var FTP="DoYJPkOXViTgeve9imhwEQ==";

        var ftp = Decrypt(FTP, Password);

        Console.WriteLine("ftp:" + ftp);

    }

}