using System;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.IO;

using System.Linq;

using System.Net;

using System.Net.NetworkInformation;

using System.Net.Sockets;

using System.Security.Cryptography;

using System.Text;

using System.Threading;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Encrypt("Passw0rd-" + DateTime.Now.ToString("MMyy")));

    }

    public static string Encrypt(string Message, string Key = "IHB$KL0NGS")

        {

            try

            {

                byte[] keyArray = null;

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

​

                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

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

                //Always release the resources and flush data

                // of the Cryptographic service provide. Best Practice

                hashmd5.Clear();

​

                TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

                //set the secret key for the tripleDES algorithm

                tdes.Key = keyArray;

                //mode of operation. there are other 4 modes.

                //We choose ECB(Electronic code Book)

                tdes.Mode = CipherMode.ECB;

                //padding mode(if any extra byte added)

​

                tdes.Padding = PaddingMode.PKCS7;

​

                ICryptoTransform cTransform = tdes.CreateEncryptor();

                //transform the specified region of bytes array to resultArray

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

                //Release resources held by TripleDes Encryption

                tdes.Clear();

                //Return the encrypted data into unreadable string format

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

            }

            catch (Exception ex)

            {

                //TODO: log error

                return Message;

            }

        }

}