Code to encrypt the Password or any string

Discussion in 'ASP.NET' started by hanusoftware, Jul 5, 2007.

  1. hanusoftware

    hanusoftware New Member

    Joined:
    Jun 6, 2007
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    0
    Home Page:
    http://www.hanusoftware.com
    Code:
    /// <summary>
    /// This method retrieve the string to encrypt from the Presentation Layer
    /// And return the Encrypted String
    /// </summary>
    /// <param name="str">
    /// <returns>
    public string encryptPassword(string strText)
    {
    	return Encrypt(strText, "&%#@?,:*");
    }
    
    /// <summary>
    /// This method retrieve the encrypted string to decrypt from the Presentation Layer
    /// And return the decrypted string
    /// </summary>
    /// <param name="str">
    /// <returns>
    public string decryptPassword(string str)
    {
    	return Decrypt(str, "&%#@?,:*");
    }
    
    /// <summary>
    /// This method has been used to get the Encrypetd string for the
    /// passed string
    /// </summary>
    /// <param name="strText">
    /// <param name="strEncrypt">
    /// <returns>
    private string Encrypt(string strText, string strEncrypt)
    {
    	byte[] byKey = new byte[20];
    	byte[] dv ={ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
    	try
    	{
    		byKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
    		DESCryptoServiceProvider des = new DESCryptoServiceProvider();
    		byte[] inputArray = System.Text.Encoding.UTF8.GetBytes(strText);
    		MemoryStream ms = new MemoryStream();
    		CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, dv), CryptoStreamMode.Write);
    
    		cs.Write(inputArray, 0, inputArray.Length);
    		cs.FlushFinalBlock();
    
    		return Convert.ToBase64String(ms.ToArray());
    	}
    	catch (Exception ex)
    	{
    		throw ex;
    	}
    }
    
    /// <summary>
    /// This method has been used to Decrypt the Encrypted String
    /// </summary>
    /// <param name="strText">
    /// <param name="strEncrypt">
    /// <returns>
    private string Decrypt(string strText, string strEncrypt)
    {
    	byte[] bKey = new byte[20];
    	byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
    
    	try
    	{
    		bKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
    		DESCryptoServiceProvider des = new DESCryptoServiceProvider();
    		Byte[] inputByteArray = inputByteArray = Convert.FromBase64String(strText);
    		MemoryStream ms = new MemoryStream();
    		CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(bKey, IV), CryptoStreamMode.Write);
    
    		cs.Write(inputByteArray, 0, inputByteArray.Length);
    		cs.FlushFinalBlock();
    		System.Text.Encoding encoding = System.Text.Encoding.UTF8;
    
    		return encoding.GetString(ms.ToArray());
    	}
    
    	catch (Exception ex)
    	{
    		throw ex;
    	}
    
    }
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice