Working With Encryption an Decryption

Design the Form as Following

<div>

<asp:TextBox ID="txtEncrypt" runat="server"></asp:TextBox>

 <asp:Button ID="btnEncrypt" runat="server" Text="Encrypt" OnClick="btnEncrypt_Click" />

 <asp:TextBox ID="txtDencrypt" runat="server"></asp:TextBox>

 <asp:Button ID="btnDencrpt" runat="server" Text="Dencrypt" OnClick="btnDencrpt_Click" />

</div>

Add New Item and a add a new class File with the name

EncryptDencrypt.cs

Add the following Namespaces

using System.Security.Cryptography;

using System.Text;

write the following code

public class EncryptDencrypt

    {

    TripleDESCryptoServiceProvider tdc;

    MD5CryptoServiceProvider mdcs;

     public EncryptDencrypt()

     {

          tdc = new TripleDESCryptoServiceProvider();

          mdcs = new MD5CryptoServiceProvider();

     }

  

    public string Encryption(string Data)

    {

    Byte[] eNC_data = ASCIIEncoding.ASCII.GetBytes(Data);

    string eNC_str = Convert.ToBase64String(eNC_data);

    return eNC_str;

    }

    public string Decryption(string Data)

    {

    Byte[] dEC_data = Convert.FromBase64String(Data);

    string dEC_Str =ASCIIEncoding.ASCII.GetString(dEC_data);

    return dEC_Str;

    }

 }

Write the following code in .cs page

protected void btnEncrypt_Click(object sender, EventArgs e)

    {

        if(!string.IsNullOrEmpty(txtEncrypt.Text))

        {

            EncryptDencrypt objency=new EncryptDencrypt();

            txtDencrypt.Text=objency.Encryption(txtEncrypt.Text);

        }

       

    }

protected void btnDencrpt_Click(object sender, EventArgs e)

    {

      if (!string.IsNullOrEmpty(txtDencrypt.Text))

      {

         EncryptDencrypt objdency = new EncryptDencrypt();

            txtEncrypt.Text = objdency.Decryption(txtDencrypt.Text);

        }

    }

Enter the text and click on Encrypt Button

Next Enter any Dencrpt Text and Click on Dencrpt and see the output.