加密标识使用规范

加密标识是添加到源代码中的告诉 Enigma Protector 哪部分代码需要加密处理的特殊标记字节，加密标识包含两部分：开始标识和结束标识。您应该牢记下述的加密标识使用规范：

• 结束标识不能直接放在开始标识后面，否则会引起错误导致所有标识被忽略。

  {WRONG}
  {$I include\reg_crypt_end1.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_begin1.inc}
  

  {RIGHT}
  {$I include\reg_crypt_begin1.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_end1.inc}
  

• 加密标识必须成对出现，也就是说开始标识和结束标识是一起出现的。如果您漏掉一个，所有标识都会被忽略。

  {WRONG}
  {$I include\reg_crypt_begin1.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_begin2.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_end2.inc}
  

  {RIGHT}
  {$I include\reg_crypt_begin1.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_end1.inc}
  {$I include\reg_crypt_begin2.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_end2.inc}
  

• 加密标识不能再包含有其它类型的标识。

  {WRONG}
  {$I include\reg_crypt_begin1.inc}
    {$I include\reg_crypt_begin2.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
    {$I include\reg_crypt_end2.inc}
  {$I include\reg_crypt_end1.inc}
  

  {RIGHT}
  {$I include\reg_crypt_begin1.inc}
    MessageBox(0, #10#13'This message appears only if application is registered' +
                  #10#13'and section #1 unlocked by registration key' +
                  #10#13, 'Application', 0);
  {$I include\reg_crypt_end1.inc}
  

• 加密标识必须于代码部分完全分离：

  {WRONG}
  {$I include\reg_crypt_begin1.inc}
    if EP_RegLoadKey(pcUserInfo, pcKey) then
    begin
      eName.Text := string(pcUserInfo);
      {$I include\reg_crypt_end1.inc}
      eKey.Text := string(pcKey);
      ShowMessage('Thanks for registration');
    end;
  

  {RIGHT}
  {$I include\reg_crypt_begin1.inc}
    if EP_RegLoadKey(pcUserInfo, pcKey) then
    begin
      eName.Text := string(pcUserInfo);    
      eKey.Text := string(pcKey);
      ShowMessage('Thanks for registration');
    end;
  {$I include\reg_crypt_end1.inc}
  

• 像 If-Then-Else, For-To-Do, While-Do, Repeat-Until, Try-Except, Try-Finally 之类的语句必须完全分离：

  {WRONG}
    if EP_RegLoadKey(pcUserInfo, pcKey) then
    begin
      {$I include\reg_crypt_begin1.inc}
      eName.Text := string(pcUserInfo);    
      eKey.Text := string(pcKey);
      ShowMessage('Thanks for registration');
      {$I include\reg_crypt_end1.inc}
    end;
  

  {RIGHT}
  {$I include\reg_crypt_begin1.inc}
    if EP_RegLoadKey(pcUserInfo, pcKey) then
    begin
      eName.Text := string(pcUserInfo);    
      eKey.Text := string(pcKey);
      ShowMessage('Thanks for registration');
    end;
  {$I include\reg_crypt_end1.inc}
  

• 像C 和 C++ 语言，标识内不应有放置 return：

  {WRONG}
  void CTestDlg::CheckRegistered(BOOL bReg)
  {
      CWnd* wnd;
      // Enable/disable unregister button
      wnd = GetDlgItem(IDC_BUTTON_UNREGISTER);  
      wnd->EnableWindow(bReg);
  
      // Enable/disable unregister static
      wnd = GetDlgItem(IDC_BUTTON_REGISTER);    
      wnd->EnableWindow(!bReg);
      // Enable/disable user info edit
      wnd = GetDlgItem(IDC_EDIT_USERINFO);    
      wnd->EnableWindow(!bReg);
      // Enable/disable key edit
      wnd = GetDlgItem(IDC_EDIT_KEY);    
      wnd->EnableWindow(!bReg);
  
      char* sName = NULL;
      char* sKey = NULL;
      {$I include\check_protection_begin.inc}
      if (bReg)
      {
          if (EP_RegLoadKey(&sName, &sKey))
          {
              SetDlgItemText(IDC_EDIT_USERINFO, sName);
              SetDlgItemText(IDC_EDIT_KEY, sKey);
              return;
          }
      }
      {$I include\check_protection_end.inc}
  }
  

  {RIGHT}
  void CTestDlg::CheckRegistered(BOOL bReg)
  {
      CWnd* wnd;
      // Enable/disable unregister button
      wnd = GetDlgItem(IDC_BUTTON_UNREGISTER);  
      wnd->EnableWindow(bReg);
  
      // Enable/disable unregister static
      wnd = GetDlgItem(IDC_BUTTON_REGISTER);    
      wnd->EnableWindow(!bReg);
      // Enable/disable user info edit
      wnd = GetDlgItem(IDC_EDIT_USERINFO);    
      wnd->EnableWindow(!bReg);
      // Enable/disable key edit
      wnd = GetDlgItem(IDC_EDIT_KEY);    
      wnd->EnableWindow(!bReg);
  
      char* sName = NULL;
      char* sKey = NULL;
      {$I include\check_protection_begin.inc}
      if (bReg)
      {
          if (EP_RegLoadKey(&sName, &sKey))
          {
              SetDlgItemText(IDC_EDIT_USERINFO, sName);
              SetDlgItemText(IDC_EDIT_KEY, sKey);
          }
      }
      {$I include\check_protection_end.inc}
      return;
  }
  

• Free Pascal users should enable Intel Assembler Style in Compiler Options.