Actually i want encrypt my password field in registration form. anybody help me..
thanks in advance..

In the web.config in configuration put the following:

Use random characters for the encryption string: something like: "kljasLKDKJH)&&^#WQ##@"
<appSettings>
<add key="EncryptionString" value="Random Characters for Encryption" />
</appSettings>


public static string Encrypt(string toEncrypt)
{
byte[] keyArray;
byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
AppSettingsReader appSettings = new AppSettingsReader();

string key = appSettings.GetValue("EncryptionString", typeof(string)).ToString();

MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key ));

TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;

ICryptoTransform cTransform = tdes.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}

public static string Decrypt(string toDecrypt)
{
byte[] keyArray;
byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);
AppSettingsReader appSettings = new AppSettingsReader();

string key = appSettings.GetValue("EncryptionString", typeof(string)).ToString();


MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key ));

TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;

ICryptoTransform cTransform = tdes.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

return UTF8Encoding.UTF8.GetString(resultArray);
}

stbuchok!

Thanks a lot for your kind reply!
i used it, i using string value instead of EncryptionString in web.config file

any way. very useful this.
thanx

Just for the record anyone who sees this code may want to read this. I feel like a jack@ss cause I'm also one of these guys that just copied this and didn't try to fully understand what it was doing.

http://www.codinghorror.com/blog/archives/001267.html

I'm not going to tell you what is wrong with the code, you need to read this and find out for yourself.

Rather than encrypting the user password, you should use the MD5 hash of the password. MD5 is the most secured password saving technique as it is impossible to reverse engineer the MD5 hash to its original string.

You may refer this to convert any string into the MD5 hash, http://forums.exaspring.com/microsof...using-c-sharp/

twhdir if you look at the code it is using MD5CryptoServiceProvider().