User::EncryptPassword PHP Method

    private function EncryptPassword()
    {
        $this->password = sha1(md5($this->password));
    }

 public static function Check(array $Post)
 {
     $SQL = SBB::SQL();
     $SQL->Select('users', 'Salt, Password', 'Username = \'' . mysql_real_escape_string($Post['Username']) . '\'', '', 1);
     $Row = $SQL->FetchObject();
     if ($SQL->NumRows() == 1) {
         if (User::EncryptPassword($Post['Password'], $Row->Salt) != $Row->Password) {
             self::$Error[] = Language::Get('com.sbb.login.wrong_password');
         } else {
             return true;
         }
     } else {
         self::$Error[] = Language::Get('com.sbb.login.notexist_username');
     }
     return false;
 }