Encryption decryption of user passwords in C# : The Official Microsoft ASP.NET Forums

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ajithkumar90

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Encryption decryption of user passwords in C#

Aug 07, 2012 10:50 AM|LINK

Hi,
I have a text box, a label and a button.I need to encrypt and display the values entered in the textbox in my label.I referred this link.But am not able to implement it as i am a newbie to c# programming.Kindly help me for this with the correct code using the encrypt function in this link.
Encryption/Decryption Function in .NET using the TripleDESCryptoServiceProvider Class[^]
help me friends with correct code for button click...

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Prashant Kum...

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Re: Encryption decryption of user passwords in C#

Aug 07, 2012 10:55 AM|LINK

Can you post your code?

Prashant

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Vivek J Pand...

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Re: Encryption decryption of user passwords in C#

Aug 07, 2012 11:01 AM|LINK

try this

http://forums.asp.net/p/1238171/2258386.aspx

const string DESKey = "AQWSEDRF";
        const string DESIV = "HGFEDCBA";
 
 
 
 
        public static string DESDecrypt(string stringToDecrypt)//Decrypt the content
        {
 
 
            byte[] key;
            byte[] IV;
 
 
            byte[] inputByteArray;
            try
            {
 
 
                key = Convert2ByteArray(DESKey);
 
 
                IV = Convert2ByteArray(DESIV);
 
 
                int len = stringToDecrypt.Length; inputByteArray = Convert.FromBase64String(stringToDecrypt);
 
 
 
 
                DESCryptoServiceProvider des = new DESCryptoServiceProvider();
 
 
                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 static string DESEncrypt(string stringToEncrypt)// Encrypt the content
        {
 
 
            byte[] key;
            byte[] IV;
 
 
            byte[] inputByteArray;
            try
            {
 
 
                key = Convert2ByteArray(DESKey);
 
 
                IV = Convert2ByteArray(DESIV);
 
 
                inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);
                DESCryptoServiceProvider des = new DESCryptoServiceProvider();
 
 
                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;
            }
 
 
        }
 
 
        static byte[] Convert2ByteArray(string strInput)
        {
 
 
            int intCounter; char[] arrChar;
            arrChar = strInput.ToCharArray();
 
 
            byte[] arrByte = new byte[arrChar.Length];
 
 
            for (intCounter = 0; intCounter <= arrByte.Length - 1; intCounter++)
                arrByte[intCounter] = Convert.ToByte(arrChar[intCounter]);
 
 
            return arrByte;
        }

Mark my post as an answer If It worked for you !!!
--Vivek

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ajithkumar90

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Re: Encryption decryption of user passwords in C#

Aug 07, 2012 11:07 AM|LINK

i am a newbie to c#.i dono much about hw to use the code in the link which i ve posted. I need to refer that link and prepare my code in that encrytion decryption methd... Refer that link and write and give me correct coding for button click in my asp form.

http://www.codeproject.com/Tips/306620/Encryption-Decryption-Function-in-Net-using-MD5Cry

Edited by ajithkumar90 on Aug 07, 2012 11:08 AM

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Vivek J Pand...

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257 Posts

Re: Encryption decryption of user passwords in C#

Aug 07, 2012 11:10 AM|LINK

are you getting any error or facing any issue @ debugging .. share more details

Mark my post as an answer If It worked for you !!!
--Vivek

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ajithkumar90

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24 Posts

Re: Encryption decryption of user passwords in C#

Aug 07, 2012 11:16 AM|LINK

i need md5 encryption . Ur code is using a different type of encryption i hope..

i dono to call these methods and publishing output in my label.thats the main problem.guide me how to get value from the methods and display as output in a label when i click the submit button.