public string Decrypt(string encryptedString)
 {
     try
     {
         tripleDes.Key  = CriptografiaDAO.MD5Hash("U&4v)G$KL$Lf55");
         tripleDes.Mode = CipherMode.ECB;
         byte[] buffer = Convert.FromBase64String(encryptedString);
         return(ASCIIEncoding.ASCII.GetString(tripleDes.CreateDecryptor().TransformFinalBlock(buffer, 0, buffer.Length)));
     }
     catch (Exception)
     {
         return(string.Empty);
     }
 }
        public string EncryptInterna(string stringToEncrypt)
        {
            try
            {
                tripleDes.Key  = CriptografiaDAO.MD5Hash("U&4v)G$KL$Lf55");
                tripleDes.Mode = CipherMode.ECB;

                byte[] buffer = ASCIIEncoding.ASCII.GetBytes(stringToEncrypt);
                KeyChave = null;
                return(Convert.ToBase64String(tripleDes.CreateEncryptor().TransformFinalBlock(buffer, 0, buffer.Length)));
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }