Asp.Net Encryption/Decryption Query String with DES Base64 encoded.
Example:
class Sifreleme.cs
--------------------------------------------------------------------------
using System.Text;
using System.Security.Cryptography;
using System;
using System.IO;
using System.Xml;
namespace Sifreleme2
{
///
/// Summary description for Class1.
///
public class Encryption64
{
//private byte[] key = {};
//private byte[] IV = {10, 20, 30, 40, 50, 60, 70, 80}; // it can be any byte value
public string Decrypt( string stringToDecrypt,
string sEncryptionKey)
{
byte[] key = {};
byte[] IV = {10, 20, 30, 40, 50, 60, 70, 80};
byte[] inputByteArray = new byte[stringToDecrypt.Length];
try
{
key = Encoding.UTF8.GetBytes(sEncryptionKey.Substring(0,8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(stringToDecrypt);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(key, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
Encoding encoding = Encoding.UTF8 ;
return encoding.GetString(ms.ToArray());
}
catch (System.Exception ex)
{
throw ex;
}
}
public string Encrypt( string stringToEncrypt,
string sEncryptionKey)
{
byte[] key = {};
byte[] IV = {10, 20, 30, 40, 50, 60, 70, 80};
byte[] inputByteArray; //Convert.ToByte(stringToEncrypt.Length)
try
{
key = Encoding.UTF8.GetBytes(sEncryptionKey.Substring(0,8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(key, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch (System.Exception ex)
{
throw ex;
}
}
}
}
----------------------------------------------------------------------------------------------------
WebForm1.aspx
-------------------------------------------------------------------------------------------------------
Controls:TextBox1 and Button1
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Security.Cryptography;
namespace Sifreleme2
{
///
/// Summary description for WebForm1.
///
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.Button Button1;
private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
Encryption64 asd=new Encryption64 ();
string iso=asd.Encrypt(TextBox1.Text,"!#$a54?3");
Response.Redirect("WebForm2.aspx?search="+iso);
}
}
}
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WebForm2.aspx
----------------------------------------------------------------------------------------------------------------------------------
Controls: TextBox1
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Security.Cryptography;
namespace Sifreleme2
{
///
/// Summary description for WebForm1.
///
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.Button Button1;
private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
Encryption64 asd=new Encryption64 ();
string iso=asd.Encrypt(TextBox1.Text,"!#$a54?3");
Response.Redirect("WebForm2.aspx?search="+ iso);
}
}
}
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İyi Günler,
İsmail tutumluer
