md5实现对用户名与密码的保护

这里我们说一下关于如何运用md5算法实现对用户名与密码的保护。

我们都知道，有一些应用程序需要以用户名与密码登录应用程序时，在应用程序后台就需要一个保存用户名与密码的数据库。这类数据库有，数据库，文件，服务器云台等。

我们为了更好的让大家理解md5算法保护重要信息，所以我们这里选用文件来作为用户名与密码存储空间。

下面先设计UI，分别添加如下对话框：

1. 主对话框：
2. 登录对话框：
3. 注册对话框：
4. 用户信息存储文件名称： NamePassword.cfg 
5. 这打开应用程序时，主对话框首先判断是否需要创建存储文件：

           CFile fileNamePwd;
           fileNamePwd.Open(_T("NamePassword.cfg"), CFile::modeRead);
           if ((int)fileNamePwd.m_hFile < 0)
           {
               fileNamePwd.Open(_T("NamePassword.cfg"), CFile::modeCreate);
           }
           fileNamePwd.Close();
           CFobsignupDlg::OnOK();
           LoginDlg loginDlg;
           loginDlg.DoModal();

   如果文件不存在，则创建一个文件。

6. 在登录对话框中添加登录事件：读取文件内容--md5计算输入内容，比较计算结果与文件内容，如果相同，则输入正确，否则失败：

   void LoginDlg::BN_Clicked_Login()
   {
       // TODO: Add your control notification handler code here
       unsigned char verify[17] = { 0 };
       unsigned char my_cfg[17] = { 0 };
       unsigned char*pStr;
       unsigned int length;
       int i;
       CString str;
   
       UpdateData(true);
       if (m_Edit1_userName.IsEmpty())
       {
           MessageBox(_T("Please enter your name."));
           GetDlgItem(IDC_EDIT1)->SetFocus();
           return;
       }
       if (m_Edit2_passwords.IsEmpty())
       {
           MessageBox(_T("Please enter your password."));
           GetDlgItem(IDC_EDIT2)->SetFocus();
           return;
       }
       HMODULE hmd5;
       hmd5 = ::LoadLibrary(_T("md5_dll.dll")); 
       if (hmd5)
       {
           MD5 md5_computeHash = (MD5)::GetProcAddress(hmd5, "md5_ComputeHash");
           str = m_Edit1_userName + m_Edit2_passwords;
           pStr = (unsigned char*)(LPCTSTR)str;
           length = str.GetLength();
           md5_computeHash(pStr, length, verify);
       }
       else
       {
           MessageBox(_T("Lost md5_dll.dll,Please Reinstall."));
           return;
       }
       ::FreeLibrary(hmd5);
       CFile cfile;
       cfile.Open(_T("NamePassword.cfg"), CFile::modeRead);
       if ((int)cfile.m_hFile < 0)
       {
           MessageBox(_T("Lost configuration file,please Reinstall."));
           return;
       }
       i = 1;
       while (cfile.Read(my_cfg, 16))
       {
           if (!strcmp((char*)my_cfg, (char*)verify))
           {
               i = 0;
               break;
           }
       }
       cfile.Close();
       if (i == 1)
       {
           MessageBox(_T("user name or passwords are invalid."));
           return;
       }
       if (g_bool_symbol == false)
       {
           g_bool_symbol = true;
           LoginDlg::OnOK();
           CFobsignupDlg dlgApp;
           dlgApp.DoModal();
           g_bool_symbol = false;
       }
   }

   我们比较内容运用 strcmp ，所以数组申明一定要以NULL /0作为结束，否则该比较永远为真。

7. 注册对话框添加提交事件：输入用户名、密码内容md5计算，计算结果写入文件：

   void RegisterDlg::BN_Clicked_Submit()
   {
       // TODO: Add your control notification handler code here
       CFile cfile;
       unsigned char output[16], *pdata;
       CString str, str2, str3;
       GetDlgItem(IDC_EDIT1)->GetWindowText(str3);
       GetDlgItem(IDC_EDIT2)->GetWindowText(str2);
       if (str3.IsEmpty())return;
       if (str2.IsEmpty())return;
       cfile.Open(_T("NamePassword.cfg"), CFile::modeWrite);
       if ((int)cfile.m_hFile > 0)
       {
           //get dll file module
           HMODULE hml = ::LoadLibrary(_T("md5_dll.dll"));
           if (!hml)return;
           //get dll interface's name
           MD5 md5_computeHash = (MD5)::GetProcAddress(hml, "md5_ComputeHash");
           //get all of the user's information
           str = str3 + str2;
           // a poniter to string
           pdata = (unsigned char*)(LPCTSTR)str;
           md5_computeHash(pdata, str.GetLength(), output);
           cfile.Write(output, 16);
           cfile.Close();
           //free dll file module
           ::FreeLibrary(hml);
           str = _T("Regiter OK.
   Name:") + str3 + _T("
   Passwords:") + str2;
           MessageBox(str);
           //switch to login dlg
           RegisterDlg::OnOK();
           LoginDlg dlgApp;
           dlgApp.DoModal();
       }
       else
       {
           MessageBox(_T("Lost configuration file.please reinstall."));
       }
   }

   文件写入后，直接跳转到登录对话框。

8. 源码：

   // FobsignupDlg.cpp : implementation file
   //
   
   #include "stdafx.h"
   #include "Fobsignup.h"
   #include "FobsignupDlg.h"
   #include "LoginDlg.h"
   #include "afxdialogex.h"
   
   #ifdef _DEBUG
   #define new DEBUG_NEW
   #endif
   typedef int(*PFUN)(const unsigned int        fobIdLen
       , const unsigned int        maxPepArrayLen
       , const unsigned int        maxRkeArrayLen
       , const unsigned char    *encryptedFobId
       , unsigned int            *actualPepArrayLen
       , unsigned int            *actualRkeArrayLen
       , unsigned char            *dtEncryptedPepArray
       , unsigned char            *dtEncryptedRkeArray);
   
   typedef void(*AESFUN)(unsigned char *pskey, unsigned char *blk);
   //e.g, input="123456"--(length=6)-->output={0x12,0x34,0x56}
   typedef int(*C2HFUN)(char*input, unsigned char *output, int length);
   
   unsigned char dll_key_fob[16] = { 0x56, 0x38, 0x97, 0x3f, 0x56, 0x70, 0x22, 0x88, 0x3b, 0x52, 0xfe, 0x5a, 0x01, 0x32, 0x08, 0x49 };
   unsigned char dll_key_PEP[16] = { 0x13, 0xff, 0x13, 0x84, 0x43, 0x86, 0x43, 0x4a, 0x23, 0x53, 0xe6, 0x54, 0xd3, 0x02, 0x00, 0x34 };
   unsigned char dll_key_RKE[16] = { 0x15, 0x42, 0x71, 0x73, 0x6a, 0x41, 0xe3, 0x45, 0xde, 0x40, 0xba, 0x34, 0x42, 0x82, 0xaa, 0xe2 };
   
   unsigned char bcm_key_PEP[16] = { 0x18, 0x92, 0x14, 0x81, 0x89, 0xf2, 0x4f, 0xa4, 0x92, 0x52, 0xfe, 0x5a, 0x4e, 0x32, 0xcc, 0x3d };
   unsigned char bcm_key_RKE[16] = { 0x12, 0x52, 0x63, 0x54, 0x25, 0x4b, 0xc3, 0x4b, 0x23, 0x00, 0xdd, 0xbb, 0xc3, 0x82, 0xfd, 0xf4 };
   //CRC-8 for ATM HEC (x8+x2+x+1)
   unsigned char cal_crc(unsigned char *vptr, unsigned char len)
   {
       const unsigned char *data = vptr;
       unsigned int crc = 0;
       int i, j;
       for (j = len; j; j--, data++)
       {
           crc ^= (*data << 8);
           for (i = 8; i; i--)
           {
               if (crc & 0x8000)
                   crc ^= (unsigned int)(0x1070 << 3);
               crc <<= 1;
           }
       }
       return (unsigned char)(crc >> 8);
   }
   BOOL g_bool_symbol = false;
   
   // CAboutDlg dialog used for App About
   
   class CAboutDlg : public CDialogEx
   {
   public:
       CAboutDlg();
   
   // Dialog Data
       enum { IDD = IDD_ABOUTBOX };
   
       protected:
       virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
   
   // Implementation
   protected:
       DECLARE_MESSAGE_MAP()
   };
   
   CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
   {
   }
   
   void CAboutDlg::DoDataExchange(CDataExchange* pDX)
   {
       CDialogEx::DoDataExchange(pDX);
   }
   
   BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
   END_MESSAGE_MAP()
   
   
   // CFobsignupDlg dialog
   
   
   
   CFobsignupDlg::CFobsignupDlg(CWnd* pParent /*=NULL*/)
       : CDialogEx(CFobsignupDlg::IDD, pParent)
       , m_Edit1(_T(""))
       , m_Edit2(_T(""))
       , m_Edit3(_T(""))
       , m_Edit4(_T(""))
       , m_Edit5(_T(""))
       , m_Edit6(_T(""))
       , m_Edit7(_T(""))
       , m_Edit8(_T(""))
       , m_Edit9(_T(""))
   {
       m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1); //IDR_MAINFRAME
   }
   
   void CFobsignupDlg::DoDataExchange(CDataExchange* pDX)
   {
       CDialogEx::DoDataExchange(pDX);
       DDX_Text(pDX, IDC_EDIT1, m_Edit1);
       DDX_Text(pDX, IDC_EDIT2, m_Edit2);
       DDX_Text(pDX, IDC_EDIT3, m_Edit3);
       DDX_Text(pDX, IDC_EDIT4, m_Edit4);
       DDX_Text(pDX, IDC_EDIT5, m_Edit5);
       DDX_Text(pDX, IDC_EDIT6, m_Edit6);
       DDX_Text(pDX, IDC_EDIT7, m_Edit7);
       DDX_Text(pDX, IDC_EDIT8, m_Edit8);
       DDX_Text(pDX, IDC_EDIT9, m_Edit9);
       //  DDX_Control(pDX, IDC_MSCOMM1, m_mscom);
   }
   
   BEGIN_MESSAGE_MAP(CFobsignupDlg, CDialogEx)
       ON_WM_SYSCOMMAND()
       ON_WM_PAINT()
       ON_WM_QUERYDRAGICON()
       ON_BN_CLICKED(IDC_BUTTON1, &CFobsignupDlg::create_BN_CLICKED)
       ON_BN_CLICKED(IDC_BUTTON2, &CFobsignupDlg::Clear_BN_CLICKED)
   //    ON_BN_CLICKED(IDC_BUTTON3, &CFobsignupDlg::OnBnClickedButton3)
   ON_BN_CLICKED(IDC_BUTTON3, &CFobsignupDlg::write_BN_CLICKED)
   ON_BN_CLICKED(IDC_BUTTON4, &CFobsignupDlg::Open_Close_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK1, &CFobsignupDlg::checkBox1_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK2, &CFobsignupDlg::checkBox2_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK3, &CFobsignupDlg::checkBox3_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK4, &CFobsignupDlg::checkBox4_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK5, &CFobsignupDlg::checkBox5_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK6, &CFobsignupDlg::checkBox6_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK7, &CFobsignupDlg::checkBox7_BN_CLICKED)
   ON_BN_CLICKED(IDC_CHECK8, &CFobsignupDlg::checkBox8_BN_CLICKED)
   ON_BN_CLICKED(IDC_BUTTON5, &CFobsignupDlg::BN_Clicked_Logout)
   END_MESSAGE_MAP()
   
   
   // CFobsignupDlg message handlers
   BOOL CFobsignupDlg::PreTranslateMessage(MSG *pMsg)
   {
       if (pMsg->message == WM_KEYDOWN)
       {
           switch (pMsg->wParam)
           {
           case VK_ESCAPE:
           {
                             return true;
                             break;
           }
           case VK_RETURN:
           {
                             return true;
                             break;
           }
           default:
               break;
           }
       }
       return CDialog::PreTranslateMessage(pMsg);
   }
   BOOL CFobsignupDlg::OnInitDialog()
   {
       CDialogEx::OnInitDialog();
   
       // Add "About..." menu item to system menu.
   
       // IDM_ABOUTBOX must be in the system command range.
       ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
       ASSERT(IDM_ABOUTBOX < 0xF000);
   
       CMenu* pSysMenu = GetSystemMenu(FALSE);
       if (pSysMenu != NULL)
       {
           BOOL bNameValid;
           CString strAboutMenu;
           bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
           ASSERT(bNameValid);
           if (!strAboutMenu.IsEmpty())
           {
               pSysMenu->AppendMenu(MF_SEPARATOR);
               pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
           }
       }
   
       // Set the icon for this dialog.  The framework does this automatically
       //  when the application's main window is not a dialog
       SetIcon(m_hIcon, TRUE);            // Set big icon
       SetIcon(m_hIcon, FALSE);        // Set small icon
   
       // TODO: Add extra initialization here
       if (g_bool_symbol == false)
       {
           CFile fileNamePwd;
           fileNamePwd.Open(_T("NamePassword.cfg"), CFile::modeRead);
           if ((int)fileNamePwd.m_hFile < 0)
           {
               fileNamePwd.Open(_T("NamePassword.cfg"), CFile::modeCreate);
           }
           fileNamePwd.Close();
           CFobsignupDlg::OnOK();
           LoginDlg loginDlg;
           loginDlg.DoModal();
       }
       else
       {
           CEdit *pEdit = (CEdit*)(this)->GetDlgItem(IDC_EDIT1);
           pEdit->SetLimitText(24);
           CComboBox* pct = (CComboBox *)this->GetDlgItem(IDC_COMBO1);
           CComboBox* pport = (CComboBox *)this->GetDlgItem(IDC_COMBO2);
           CComboBox* pbaud = (CComboBox *)this->GetDlgItem(IDC_COMBO3);
           CButton *pbtn = (CButton*)this->GetDlgItem(IDC_BUTTON3);
           pct->SetCurSel(0);
           pport->SetCurSel(1);
           pbaud->SetCurSel(2);
           pbtn->EnableWindow(FALSE);
       }
       return TRUE;  // return TRUE  unless you set the focus to a control
   }
   
   void CFobsignupDlg::OnSysCommand(UINT nID, LPARAM lParam)
   {
       if ((nID & 0xFFF0) == IDM_ABOUTBOX)
       {
           CAboutDlg dlgAbout;
           dlgAbout.DoModal();
       }
       else
       {
           CDialogEx::OnSysCommand(nID, lParam);
       }
   }
   
   // If you add a minimize button to your dialog, you will need the code below
   //  to draw the icon.  For MFC applications using the document/view model,
   //  this is automatically done for you by the framework.
   
   void CFobsignupDlg::OnPaint()
   {
       if (IsIconic())
       {
           CPaintDC dc(this); // device context for painting
   
           SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
   
           // Center icon in client rectangle
           int cxIcon = GetSystemMetrics(SM_CXICON);
           int cyIcon = GetSystemMetrics(SM_CYICON);
           CRect rect;
           GetClientRect(&rect);
           int x = (rect.Width() - cxIcon + 1) / 2;
           int y = (rect.Height() - cyIcon + 1) / 2;
   
           // Draw the icon
           dc.DrawIcon(x, y, m_hIcon);
       }
       else
       {
           CDialogEx::OnPaint();
       }
   }
   
   // The system calls this function to obtain the cursor to display while the user drags
   //  the minimized window.
   HCURSOR CFobsignupDlg::OnQueryDragIcon()
   {
       return static_cast<HCURSOR>(m_hIcon);
   }
   
   
   
   void CFobsignupDlg::create_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[50];
       unsigned char chr_buf[12];
       unsigned char fob_buf[16];
       unsigned char pep_buf[16];
       unsigned char rke_buf[16];
       unsigned char message_buf[49];
       //unsigned char key_buf[16];
       int i, k, result;
       unsigned int peplen = 0, rkelen = 0;
       unsigned int index;
       CString str;
       CString str_show(fob_buf);
       CButton*pbutton;
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT1)->GetWindowText(str);
       strcpy(buf, str);
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 24))
       {
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           fob_buf[12] = 0;
           fob_buf[13] = 0;
           fob_buf[14] = 0;
           fob_buf[15] = 0;
           m_Edit1 = "";
           for (i = 0,index=0; i < 12; i++)
           {
               if (IsDlgButtonChecked(IDC_CHECK1) == BST_CHECKED)
               {
                   message_buf[index++] = fob_buf[11-i] ^ 0x38;
                   str_show.Format("%X", fob_buf[11-i]);
               }
               else
               {
                   message_buf[index++] = fob_buf[i] ^ 0x38;
                   str_show.Format("%X", fob_buf[i]);
               }
               chr_buf[i] = fob_buf[i];
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit1 = "00";
               }
               else if (k == 1)
               {
                   m_Edit1 += "0";
                   m_Edit1 += str_show;
               }
               else
               {
                   m_Edit1 += str_show;
               }
           }
           if (IsDlgButtonChecked(IDC_CHECK1) == BST_CHECKED)
           {
               for (i = 0; i < 12; i++)
               {
                   fob_buf[i] = chr_buf[11 - i];
               }
               pbutton = (CButton*)GetDlgItem(IDC_CHECK1);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK2) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK2);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK3) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK3);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK4) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK4);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK5) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK5);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK6) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK6);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK7) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK7);
               pbutton->SetCheck(false);
           }
           if (IsDlgButtonChecked(IDC_CHECK8) == BST_CHECKED)
           {
               pbutton = (CButton*)GetDlgItem(IDC_CHECK8);
               pbutton->SetCheck(false);
           }
           AESFUN m_ase = (AESFUN)::GetProcAddress(hModule, "AesEncrypt");
           m_ase(dll_key_fob, fob_buf);
           m_Edit2 = m_Edit3 = m_Edit4 = m_Edit5 = m_Edit6 = m_Edit7 = m_Edit8 = m_Edit9 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit2 = "00";
               }
               else if (k == 1)
               {
                   m_Edit2 += "0";
                   m_Edit2 += str_show;
               }
               else
               {
                   m_Edit2 += str_show;
               }
           }
           hModule = ::LoadLibrary(_T("LaMotta FOB Signup_1.1_REL.dll"));
           PFUN m_dll = (PFUN)::GetProcAddress(hModule, "FobSignup");
           result = m_dll(16, 16, 16, fob_buf, &peplen, &rkelen, pep_buf, rke_buf);
           if (result == 0)
           {
               for (i = 0; i < 16; i++)
               {
                   str_show.Format("%X", pep_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit3 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit3 += "0";
                       m_Edit3 += str_show;
                   }
                   else
                   {
                       m_Edit3 += str_show;
                   }
                   str_show.Format("%X", rke_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit4 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit4 += "0";
                       m_Edit4 += str_show;
                   }
                   else
                   {
                       m_Edit4 += str_show;
                   }
               }
               hModule = ::LoadLibrary(_T("AES_DLL.dll"));
               m_ase = (AESFUN)::GetProcAddress(hModule, "ContraryAesEncrypt");
               m_ase(dll_key_PEP, pep_buf);
               m_ase(dll_key_RKE, rke_buf);
               for (i = 0; i < 16; i++)
               {
                   str_show.Format("%X", pep_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit5 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit5 += "0";
                       m_Edit5 += str_show;
                   }
                   else
                   {
                       m_Edit5 += str_show;
                   }
                   str_show.Format("%X", rke_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit6 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit6 += "0";
                       m_Edit6 += str_show;
                   }
                   else
                   {
                       m_Edit6 += str_show;
                   }
               }
               m_ase(bcm_key_PEP, pep_buf);
               m_ase(bcm_key_RKE, rke_buf);
               for (i = 0; i < 16; i++)
               {
                   message_buf[index++] = pep_buf[i] ^ 0x38;
                   str_show.Format("%X", pep_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit7 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit7 += "0";
                       m_Edit7 += str_show;
                   }
                   else
                   {
                       m_Edit7 += str_show;
                   }
                   message_buf[index + 15] = rke_buf[i] ^ 0x38;
                   str_show.Format("%X", rke_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit8 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit8 += "0";
                       m_Edit8 += str_show;
                   }
                   else
                   {
                       m_Edit8 += str_show;
                   }
               }
               index += 16;
               message_buf[index] = cal_crc(message_buf, index) ^ 0x83;
               for (i = 0; i < int(index + 1); i++)
               {
                   str_show.Format("%X", message_buf[i]);
                   k = strlen(str_show);
                   if (k == 0)
                   {
                       m_Edit9 = "00";
                   }
                   else if (k == 1)
                   {
                       m_Edit9 += "0";
                       m_Edit9 += str_show;
                   }
                   else
                   {
                       m_Edit9 += str_show;
                   }
               }
               CComboBox* pct = (CComboBox *)this->GetDlgItem(IDC_COMBO1);
               if (pct->GetCurSel() == 2)
               {
                   m_Edit9 += "315MHz";
               }
               else if (pct->GetCurSel() == 1)
               {
                   m_Edit9 += "433MHz";
               }
               else if (pct->GetCurSel() == 0)
               {
                   m_Edit9 += "Scaner";
               }
               else
               {
                   m_Edit9 += "Scaner";
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   void CFobsignupDlg::Clear_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       DWORD DADA = 5631;
       CString str;
       m_Edit2 = m_Edit3 = m_Edit4 = m_Edit5 = m_Edit6 = m_Edit7 = m_Edit8 = m_Edit9 = "";
       UpdateData(false);
   }
   BEGIN_EVENTSINK_MAP(CFobsignupDlg, CDialogEx)
       ON_EVENT(CFobsignupDlg, IDC_MSCOMM1, 1, CFobsignupDlg::OnCommMscomm1, VTS_NONE)
   END_EVENTSINK_MAP()
   
   
   void CFobsignupDlg::OnCommMscomm1()
   {
       // TODO: Add your message handler code here
       long len, i;
       BYTE rxdata[64];                                    //rx buffer
       VARIANT variant_inp;
       COleSafeArray safearray_inp;
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK1);
       CMscomm1 *pcom = (CMscomm1*)this->GetDlgItem(IDC_MSCOMM1); 
       if (pcom->get_CommEvent() == 2)
       {
           variant_inp = pcom->get_Input();                //read rx buffer
           safearray_inp = variant_inp;                    //VARIANT to COleSafeArray calss
           len = safearray_inp.GetOneDimSize();            //get the active length of data byte
           if (len != 30)
               return;
           if (IsDlgButtonChecked(IDC_CHECK1) == BST_CHECKED)
           {
               pt->SetCheck(false);
           }
           m_Edit1 = "";
           for (i = 0; i<(len - 2); i++)                    //ignore '
   ' symbol
           {
               safearray_inp.GetElement(&i, rxdata + i);
               if ((i+1)%5 == 0);                            //ignore space symbols
               else
               {
                   m_Edit1 += rxdata[i];
               }
           }
           UpdateData(false);
       }
   }
   
   
   void CFobsignupDlg::write_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       CMscomm1 *pcomm = (CMscomm1 *)this->GetDlgItem(IDC_MSCOMM1);
       if (pcomm->get_PortOpen()==false)
       {
           MessageBox(_T("Serial Port DID NOT Open."));
       }
       else if (m_Edit9 == "")
       {
           MessageBox(_T("No message Write."));
       }
       else
       {
           pcomm->put_Output(COleVariant(m_Edit9));
       }
   }
   
   
   void CFobsignupDlg::Open_Close_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       CMscomm1 *pcm = (CMscomm1 *)this ->GetDlgItem(IDC_MSCOMM1);
       CComboBox* pFreq = (CComboBox *)this->GetDlgItem(IDC_COMBO1);
       CComboBox* pport = (CComboBox *)this->GetDlgItem(IDC_COMBO2);
       CComboBox* pbaud = (CComboBox *)this->GetDlgItem(IDC_COMBO3);
       CButton *pBtn = (CButton*)this->GetDlgItem(IDC_BUTTON3);
       if (pcm->get_PortOpen() == false)
       {
           pcm->put_CommPort(pport->GetCurSel());
           if (pbaud->GetCurSel() == 0)
           {
               pcm->put_Settings(_T("2400,n,8,1"));
           }
           else if (pbaud->GetCurSel() == 1)
           {
               pcm->put_Settings(_T("4800,n,8,1"));
           }
           else if (pbaud->GetCurSel() == 2)
           {
               pcm->put_Settings(_T("9600,n,8,1"));
           }
           else if (pbaud->GetCurSel() == 3)
           {
               pcm->put_Settings(_T("38400,n,8,1"));
           }
           else if (pbaud->GetCurSel() == 4)
           {
               pcm->put_Settings(_T("115200,n,8,1"));
           }
           else
           {
               pcm->put_Settings(_T("9600,n,8,1"));
           }
           pcm->put_InputMode(1);                //1: read data by binary checking
           pcm->put_RThreshold(30);            //onComm event trigger when N byte in input buffer
           pcm->put_InputLen(0);                //set input length 0.
           pcm->put_PortOpen(true);
       }
       else
       {
           pcm->put_PortOpen(false);
       }
       if (pcm->get_PortOpen() == false)
       {
           SetDlgItemText(IDC_BUTTON4, _T("Open"));
           pport->EnableWindow(true);
           pbaud->EnableWindow(true);
           pFreq->EnableWindow(true);
           pBtn->EnableWindow(false);
       }
       else
       {
           SetDlgItemText(IDC_BUTTON4, _T("Close"));
           pport->EnableWindow(false);
           pbaud->EnableWindow(false);
           pFreq->EnableWindow(false);
           pBtn->EnableWindow(true);
       }
   }
   
   
   void CFobsignupDlg::checkBox1_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[50];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK1);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT1)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK1) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 24))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           fob_buf[12] = 0;
           fob_buf[13] = 0;
           fob_buf[14] = 0;
           fob_buf[15] = 0;
           m_Edit1 = "";
           for (i = 0; i < 12; i++)
           {
               str_show.Format("%X", fob_buf[11 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit1 = "00";
               }
               else if (k == 1)
               {
                   m_Edit1 += "0";
                   m_Edit1 += str_show;
               }
               else
               {
                   m_Edit1 += str_show;
               }
           }
       }
       UpdateData(false); 
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox2_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK2);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT2)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK2) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit2 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit2 = "00";
               }
               else if (k == 1)
               {
                   m_Edit2 += "0";
                   m_Edit2 += str_show;
               }
               else
               {
                   m_Edit2 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox3_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK3);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT3)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK3) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit3 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit3 = "00";
               }
               else if (k == 1)
               {
                   m_Edit3 += "0";
                   m_Edit3 += str_show;
               }
               else
               {
                   m_Edit3 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox4_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK4);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT4)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK4) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit4 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit4 = "00";
               }
               else if (k == 1)
               {
                   m_Edit4 += "0";
                   m_Edit4 += str_show;
               }
               else
               {
                   m_Edit4 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox5_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK5);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT5)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK5) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit5 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit5 = "00";
               }
               else if (k == 1)
               {
                   m_Edit5 += "0";
                   m_Edit5 += str_show;
               }
               else
               {
                   m_Edit5 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox6_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK6);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT6)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK6) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit6 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit6 = "00";
               }
               else if (k == 1)
               {
                   m_Edit6 += "0";
                   m_Edit6 += str_show;
               }
               else
               {
                   m_Edit6 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox7_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK7);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT7)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK7) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit7 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit7 = "00";
               }
               else if (k == 1)
               {
                   m_Edit7 += "0";
                   m_Edit7 += str_show;
               }
               else
               {
                   m_Edit7 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   void CFobsignupDlg::checkBox8_BN_CLICKED()
   {
       // TODO: Add your control notification handler code here
       char buf[96];
       int i, k;
       unsigned char fob_buf[16];
       CString str;
       CString str_show(fob_buf);
       CButton*pt = (CButton*)GetDlgItem(IDC_CHECK8);
       //get context from edit1
       UpdateData(true);
       GetDlgItem(IDC_EDIT8)->GetWindowText(str);
       if (IsDlgButtonChecked(IDC_CHECK8) == BST_CHECKED)
       {
           if (str.GetLength() == 0)
           {
               pt->SetCheck(false);
               AfxMessageBox(_T("zero length"));
               return;
           }
       }
       else if (str.GetLength() == 0)
       {
           return;
       }
       strcpy(buf, str);
       TCHAR chCurDir[MAX_PATH] = { 0 };
       GetCurrentDirectory(MAX_PATH, chCurDir);
       SetCurrentDirectory(_T("C:\Windows"));
       HMODULE hModule = ::LoadLibrary(_T("AES_DLL.dll"));
       C2HFUN ToChar = (C2HFUN)::GetProcAddress(hModule, "char_to_hex");
       if (!ToChar(buf, fob_buf, 32))
       {
           pt->SetCheck(false);
           AfxMessageBox(_T("data invalid."));
       }
       else
       {
           m_Edit8 = "";
           for (i = 0; i < 16; i++)
           {
               str_show.Format("%X", fob_buf[15 - i]);
               k = strlen(str_show);
               if (k == 0)
               {
                   m_Edit8 = "00";
               }
               else if (k == 1)
               {
                   m_Edit8 += "0";
                   m_Edit8 += str_show;
               }
               else
               {
                   m_Edit8 += str_show;
               }
           }
       }
       UpdateData(false);
       SetCurrentDirectory(chCurDir);
       ::FreeLibrary(hModule);
   }
   
   
   
   void CFobsignupDlg::BN_Clicked_Logout()
   {
       // TODO: Add your control notification handler code here
       g_bool_symbol = false;
       CFobsignupDlg::OnOK();
       LoginDlg dlgApp;
       dlgApp.DoModal();
   }

   // LoginDlg.cpp : implementation file
   //
   
   #include "stdafx.h"
   #include "Fobsignup.h"
   #include "LoginDlg.h"
   #include "RegisterDlg.h"
   #include "FobsignupDlg.h"
   #include "afxdialogex.h"
   
   extern BOOL g_bool_symbol;
   // LoginDlg dialog
   typedef void (*MD5)(unsigned char *pInputBuf, unsigned int inputLength, unsigned char *pOutputBuf);
   
   IMPLEMENT_DYNAMIC(LoginDlg, CDialogEx)
   
   LoginDlg::LoginDlg(CWnd* pParent /*=NULL*/)
       : CDialogEx(LoginDlg::IDD, pParent)
       , m_Edit1_userName(_T(""))
       , m_Edit2_passwords(_T(""))
   {
   
   }
   
   LoginDlg::~LoginDlg()
   {
   }
   
   void LoginDlg::DoDataExchange(CDataExchange* pDX)
   {
       CDialogEx::DoDataExchange(pDX);
       DDX_Text(pDX, IDC_EDIT1, m_Edit1_userName);
       DDX_Text(pDX, IDC_EDIT2, m_Edit2_passwords);
   }
   
   
   BEGIN_MESSAGE_MAP(LoginDlg, CDialogEx)
       ON_BN_CLICKED(IDC_BUTTON1, &LoginDlg::BN_Clicked_Login)
       ON_BN_CLICKED(IDC_BUTTON2, &LoginDlg::BN_Clicked_Exit)
       ON_BN_CLICKED(IDC_CHECK1, &LoginDlg::BN_Clicked_showPwd)
       ON_BN_CLICKED(IDC_BUTTON3, &LoginDlg::BN_Clicked_Register)
   END_MESSAGE_MAP()
   
   
   // LoginDlg message handlers
   
   
   BOOL LoginDlg::PreTranslateMessage(MSG* pMsg)
   {
       if (pMsg->message == WM_KEYDOWN)
       {
           switch (pMsg->wParam)
           {
           case VK_ESCAPE:
           {
                             return true;
                             break;
           }
           case VK_RETURN:
           {
                             return true;
                             break;
           }
           default:
               break;
           }
       }
       return CDialog::PreTranslateMessage(pMsg);
   }
   
   BOOL LoginDlg::OnInitDialog()
   {
       CDialogEx::OnInitDialog();
       CEdit *pEdit = (CEdit*)(this)->GetDlgItem(IDC_EDIT2);
       pEdit->SetLimitText(16);
       pEdit->SetPasswordChar('*');
       UpdateData(FALSE);
       return false;
   }
   
   void LoginDlg::BN_Clicked_Login()
   {
       // TODO: Add your control notification handler code here
       unsigned char verify[17] = { 0 };
       unsigned char my_cfg[17] = { 0 };
       unsigned char*pStr;
       unsigned int length;
       int i;
       CString str;
   
       UpdateData(true);
       if (m_Edit1_userName.IsEmpty())
       {
           MessageBox(_T("Please enter your name."));
           GetDlgItem(IDC_EDIT1)->SetFocus();
           return;
       }
       if (m_Edit2_passwords.IsEmpty())
       {
           MessageBox(_T("Please enter your password."));
           GetDlgItem(IDC_EDIT2)->SetFocus();
           return;
       }
       HMODULE hmd5;
       hmd5 = ::LoadLibrary(_T("md5_dll.dll")); 
       if (hmd5)
       {
           MD5 md5_computeHash = (MD5)::GetProcAddress(hmd5, "md5_ComputeHash");
           str = m_Edit1_userName + m_Edit2_passwords;
           pStr = (unsigned char*)(LPCTSTR)str;
           length = str.GetLength();
           md5_computeHash(pStr, length, verify);
       }
       else
       {
           MessageBox(_T("Lost md5_dll.dll,Please Reinstall."));
           return;
       }
       ::FreeLibrary(hmd5);
       CFile cfile;
       cfile.Open(_T("NamePassword.cfg"), CFile::modeRead);
       if ((int)cfile.m_hFile < 0)
       {
           MessageBox(_T("Lost configuration file,please Reinstall."));
           return;
       }
       i = 1;
       while (cfile.Read(my_cfg, 16))
       {
           if (!strcmp((char*)my_cfg, (char*)verify))
           {
               i = 0;
               break;
           }
       }
       cfile.Close();
       if (i == 1)
       {
           MessageBox(_T("user name or passwords are invalid."));
           return;
       }
       if (g_bool_symbol == false)
       {
           g_bool_symbol = true;
           LoginDlg::OnOK();
           CFobsignupDlg dlgApp;
           dlgApp.DoModal();
           g_bool_symbol = false;
       }
   }
   
   
   void LoginDlg::BN_Clicked_Exit()
   {
       // TODO: Add your control notification handler code here
       LoginDlg::OnOK();
   }
   
   
   void LoginDlg::BN_Clicked_showPwd()
   {
       // TODO: Add your control notification handler code here
       if (IsDlgButtonChecked(IDC_CHECK1) == BST_CHECKED)
       {
           UpdateData(true);
           CEdit *pEdit = (CEdit*)(this)->GetDlgItem(IDC_EDIT2);
           pEdit->SetPasswordChar(0);
           SetDlgItemText(IDC_EDIT2, m_Edit2_passwords);
           UpdateData(false);
       }
       else
       {
           UpdateData(true);
           CEdit *pEdit = (CEdit*)(this)->GetDlgItem(IDC_EDIT2);
           pEdit->SetPasswordChar('*');
           SetDlgItemText(IDC_EDIT2, m_Edit2_passwords);
           UpdateData(false);
       }
       GetDlgItem(IDC_EDIT2)->SetFocus();
   }
   
   
   void LoginDlg::BN_Clicked_Register()
   {
       // TODO: Add your control notification handler code here
       LoginDlg::OnOK();
       RegisterDlg dlgApp;
       dlgApp.DoModal();
   }

   // RegisterDlg.cpp : implementation file
   //
   
   #include "stdafx.h"
   #include "Fobsignup.h"
   #include "LoginDlg.h"
   #include "RegisterDlg.h"
   #include "afxdialogex.h"
   
   
   typedef void(*MD5)(unsigned char *pInputBuf, unsigned int inputLength, unsigned char *pOutputBuf);
   // RegisterDlg dialog
   
   IMPLEMENT_DYNAMIC(RegisterDlg, CDialogEx)
   
   RegisterDlg::RegisterDlg(CWnd* pParent /*=NULL*/)
       : CDialogEx(RegisterDlg::IDD, pParent)
   {
   
   }
   
   RegisterDlg::~RegisterDlg()
   {
   }
   
   void RegisterDlg::DoDataExchange(CDataExchange* pDX)
   {
       CDialogEx::DoDataExchange(pDX);
   }
   
   
   BEGIN_MESSAGE_MAP(RegisterDlg, CDialogEx)
       ON_BN_CLICKED(IDC_BUTTON2, &RegisterDlg::BN_Clicked_Return)
       ON_BN_CLICKED(IDC_BUTTON1, &RegisterDlg::BN_Clicked_Submit)
   END_MESSAGE_MAP()
   
   
   // RegisterDlg message handlers
   
   
   void RegisterDlg::BN_Clicked_Return()
   {
       // TODO: Add your control notification handler code here
       RegisterDlg::OnOK();
       LoginDlg dlgApp;
       dlgApp.DoModal();
   }
   
   
   void RegisterDlg::BN_Clicked_Submit()
   {
       // TODO: Add your control notification handler code here
       CFile cfile;
       unsigned char output[16], *pdata;
       CString str, str2, str3;
       GetDlgItem(IDC_EDIT1)->GetWindowText(str3);
       GetDlgItem(IDC_EDIT2)->GetWindowText(str2);
       if (str3.IsEmpty())return;
       if (str2.IsEmpty())return;
       cfile.Open(_T("NamePassword.cfg"), CFile::modeWrite);
       if ((int)cfile.m_hFile > 0)
       {
           //get dll file module
           HMODULE hml = ::LoadLibrary(_T("md5_dll.dll"));
           if (!hml)return;
           //get dll interface's name
           MD5 md5_computeHash = (MD5)::GetProcAddress(hml, "md5_ComputeHash");
           //get all of the user's information
           str = str3 + str2;
           // a poniter to string
           pdata = (unsigned char*)(LPCTSTR)str;
           md5_computeHash(pdata, str.GetLength(), output);
           cfile.Write(output, 16);
           cfile.Close();
           //free dll file module
           ::FreeLibrary(hml);
           str = _T("Regiter OK.
   Name:") + str3 + _T("
   Passwords:") + str2;
           MessageBox(str);
           //switch to login dlg
           RegisterDlg::OnOK();
           LoginDlg dlgApp;
           dlgApp.DoModal();
       }
       else
       {
           MessageBox(_T("Lost configuration file.please reinstall."));
       }
   }

9. End. 谢谢.