How we Decrypt the Text File using DES Method in ASP.Net: Part 2

 How we Decrypt the text File using DES method.

1. Open visual studio and create a project

2. Add the following assembly on the page

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Security;
using System.Security.Cryptography;
using System.Text;
using System.IO;

3. Now write the code in the Page

public class Tester
{
    public static void Main()
    {
        try
        {
            DESCryptoServiceProvider myDESProvider = new DESCryptoServiceProvider();
              myDESProvider.Key = ASCIIEncoding.ASCII.GetBytes("12345678");
             myDESProvider.IV = ASCIIEncoding.ASCII.GetBytes("12345678");
             FileStream DecryptedFile = new FileStream("testDes.txt", FileMode.Open, FileAccess.Read);
            ICryptoTransform myICryptoTransform = myDESProvider.CreateDecryptor(myDESProvider.Key, myDESProvider.IV);
            CryptoStream myCryptoStream = new CryptoStream(DecryptedFile, myICryptoTransform, CryptoStreamMode.Read);
             StreamReader myDecStreamReader = new StreamReader(myCryptoStream);
            StreamWriter myDecStreamWriter = new StreamWriter("p1.txt");
              myDecStreamWriter.Write(myDecStreamReader.ReadToEnd());
              myCryptoStream.Close();
             myDecStreamReader.Close();
             myDecStreamWriter.Close();
         }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
    }
}

4. Now convert the encrypted text file in the folder D:\New Folder (2)\ConsoleApplication4\ConsoleApplication4\bin\Debug (My text file path) to decrypted text file.

Now start debugging, you will see a testDes.txt file automatically converted into p1.text Decrypted text file.