MD5

MD5 md5 = new MD5CryptoServiceProvider();

md5.ComputeHash((ASCIIEncoding.ASCII.GetBytes(strValue)));

byte[] byteResult = md5.Hash;

StringBuilder sb = new StringBuilder();

for (int i = 0; i < byteResult.Length; i++)

{

     sb.Append(byteResult[i].ToString("x2"));

}

return sb.ToString();