encryption & decryption

Question

1.00/5 (3 votes)

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XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">

    <div>

        Input : <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

        <asp:Button ID="Button1" runat="server" Text="encrypt"

            onclick="Button1_Click" />

        <br /><br />

        Output : <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

        <asp:Button ID="Button2" runat="server" Text="decrypt"

            onclick="Button2_Click" />

            <br /><br />

            Final Result :

        <asp:Label ID="Label1" runat="server" Text=""></asp:Label>

    </div>

    </form>
</body>
</html>

c#

C#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.Security;



public partial class _Default : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {



    }

    protected void Button1_Click(object sender, EventArgs e)
    {

        TextBox2.Text = Encrypt(TextBox1.Text.Trim());

    }

    public static string Encrypt(string strPassword)
    {

        FormsAuthenticationTicket Ftk = new FormsAuthenticationTicket(strPassword, false, 1);

        return FormsAuthentication.Encrypt(Ftk);

    }



    public static string Decrypt(string encryptedString)
    {

        FormsAuthenticationTicket Ftk = FormsAuthentication.Decrypt(encryptedString);

        return Ftk.Name;

    }

    protected void Button2_Click(object sender, EventArgs e)
    {

        Label1.Text = Decrypt(TextBox2.Text.Trim());

    }

}

Posted 24-Sep-12 0:12am

darshith

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Comments

_Amy 24-Sep-12 6:14am

Did you forgot to ask your question?

StianSandberg 24-Sep-12 6:14am

and your question?

CPallini 24-Sep-12 6:16am

And the question is?!

1 solution

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Rickin Kane · Answer 1 · 2012-09-24T00:18:00

Please next time if we see half question then it will be consider spam and no response to it will be given , and yes what u writing in there is complete crab , user the below code

create a seprate class for it

C#

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

C#

private static Byte[] sharedkey = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
        private static Byte[] sharedvector = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };

public static string Encrypt(string val)
       {
           TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
           Byte[] toEncrypt = Encoding.UTF8.GetBytes(val);
           MemoryStream ms = new MemoryStream();
           CryptoStream cs = new CryptoStream(ms, tdes.CreateEncryptor(sharedkey, sharedvector), CryptoStreamMode.Write);
           cs.Write(toEncrypt, 0, toEncrypt.Length);
           cs.FlushFinalBlock();
           return Convert.ToBase64String(ms.ToArray());
       }

public static string Decrypt(string val)
      {
          TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
          Byte[] toDecrypt = Convert.FromBase64String(val);
          MemoryStream ms = new MemoryStream();
          CryptoStream cs = new CryptoStream(ms, tdes.CreateDecryptor(sharedkey, sharedvector), CryptoStreamMode.Write);
          cs.Write(toDecrypt, 0, toDecrypt.Length);
          cs.FlushFinalBlock();
          return Encoding.UTF8.GetString(ms.ToArray());
      }