using System;

using System.Collections.Generic;

using System.Configuration;

using System.IO;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        string ytest = Decrypt("gP8wxG_SCeg4P6mH3u56RY9Wu7LFj5LlwwtMgN23sw3x-OIrvBK8FmPLiXIfvVE9", false);

        Console.WriteLine(ytest);

    }

​

    public static string Decrypt(string cipherText, bool test)

    {

        try

        {

            byte[] keyArray;

            // get the byte code of the string

            cipherText = cipherText.Replace('_', '+').Replace('-', '/').Replace('$', '=');

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

            System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();

            // Get your key from config file to open the lock!

            string key = "";

            if (true)

            {

                // if hashing was used get the hash code with regards to your key

                MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

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

                // release any resource held by the MD5CryptoServiceProvider

                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.CreateDecryptor();

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

            // Release resources held by TripleDes Encryptor

            tdes.Clear();

            // return the Clear decrypted TEXT

            return UTF8Encoding.UTF8.GetString(resultArray);

        }

        catch

        {

            return cipherText;

        }

    }

}