desdlg.cpp

这是我在学习Visual C++过程中做过的一个程序,可以作为大家学习Visual c++编程能力学习的参考,相信对读者会有所启发.

// DESDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DES.h"
#include "DESDlg.h"
#include<math.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDESDlg dialog

CDESDlg::CDESDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDESDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDESDlg)
	m_StrKey = _T("");
	m_strText = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDESDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDESDlg)
	DDX_Control(pDX, IDC_STATICTEXT, m_ctlText);
	DDX_Control(pDX, IDC_KEYSTATIC, m_ctlText2);
	DDX_Control(pDX, IDC_PROGRESS1, m_ctlProgress);
	DDX_Text(pDX, IDC_KEY, m_StrKey);
	DDV_MaxChars(pDX, m_StrKey, 8);
	DDX_Text(pDX, IDC_EDITBOX, m_strText);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDESDlg, CDialog)
	//{{AFX_MSG_MAP(CDESDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_COMMAND(IDM_SHIFT, OnShift)
	ON_COMMAND(IDC_MFILESAVE, OnMfilesave)
	ON_COMMAND(ID_SFILESAVE, OnSfilesave)
	ON_COMMAND(ID_SFILEOPEN, OnSfileopen)
	ON_COMMAND(ID_CFILEOPEN, OnCfileopen)
	ON_COMMAND(IDC_DEFAULTFILL, OnDefaultfill)
	ON_COMMAND(ID_EXIT, OnExit)
	ON_COMMAND(ID_CLEAR, OnClear)
	ON_COMMAND(ID_AUTHOR, OnAuthor)
	ON_BN_CLICKED(IDC_CIPHERBUTTON, OnCipherbutton)
	ON_BN_CLICKED(IDC_DECIPHERBUTTON, OnDecipherbutton)
	ON_BN_CLICKED(IDC_EXITBUTTON, OnExitbutton)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDESDlg message handlers

BOOL CDESDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.
	m_strText="##华中科技大学机械科学与工程学院信息与系统技术研究所##";
	m_StrKey="software";
	UpdateData(false);//注意，在初始化里改变默认设置，改完后一定要刷新

	// 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)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		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
	//decipher icon
/*	m_decipherIcon.SubclassDlgItem(IDC_DECIPHERBUTTON,this);
	m_decipherIcon.SetIcon(IDI_ICONDECIPHER);
	m_decipherIcon.SetShade(CShadeButtonST::SHS_HARDBUMP);

	//encipher icon
	m_encipherBtn.SubclassDlgItem(IDC_CIPHERBUTTON,this);
	m_encipherBtn.SetIcon(IDI_ENCIPHERICON);
   	m_encipherBtn.SetShade(CShadeButtonST::SHS_HARDBUMP);   */

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CDESDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::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 CDESDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (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
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDESDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDESDlg::OnShift() 
{
	// TODO: Add your command handler code here
	CMenu *m_lMenu;
	m_lMenu=GetMenu();
	if(m_seeable==false){
		m_seeable=true;
		((CEdit*)GetDlgItem(IDC_KEY))->SetPasswordChar(0);	
		m_lMenu->ModifyMenu(IDM_SHIFT,MF_STRING,IDM_SHIFT,"密钥不可见");
	}
	else{
		m_seeable=false;
		((CEdit*)GetDlgItem(IDC_KEY))->SetPasswordChar('*');	
		m_lMenu->ModifyMenu(IDM_SHIFT,MF_STRING,IDM_SHIFT,"密钥可见");
	}
	Invalidate(true);
}

void CDESDlg::OnMfilesave() 
{
	// TODO: Add your command handler code here
	CFileDialog m_foDlg(FALSE,"des","new.des",
		                OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						"DES文件(*.des)|*.des|文本文件(*.txt)|*.txt|数据文件(.dat)|*.dat|所有文件(*.*)|*.*||",
						NULL);
	FileSOpen(m_foDlg);
}

void CDESDlg::OnSfilesave() 
{
	// TODO: Add your command handler code here
	CFileDialog m_foDlg(FALSE,"txt","new.txt",
		                OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						"文本文件(*.txt)|*.txt|数据文件(.dat)|*.dat|所有文件(*.*)|*.*||",
						NULL);
	FileSOpen(m_foDlg);
}

void CDESDlg::OnSfileopen() 
{
	// TODO: Add your command handler code here
	CFileDialog m_foDlg(TRUE,"txt","Demo.txt",
		                OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						"文本文件(*.txt)|*.txt|数据文件(.dat)|*.dat|所有文件(*.*)|*.*||",
						NULL);
  	FileOpen(m_foDlg);
}

void CDESDlg::OnCfileopen() 
{
	// TODO: Add your command handler code here
	CFileDialog m_foDlg(TRUE,"des","Bio.des",
		                OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						"DES文件(*.des)|*.des|文本文件(*.txt)|*.txt|数据文件(.dat)|*.dat|所有文件(*.*)|*.*||",
						NULL);
	FileOpen(m_foDlg);
}

void CDESDlg::OnDefaultfill() 
{
	// TODO: Add your command handler code here
	m_strText="请在这里输入文本并开始编辑...";
	UpdateData(FALSE);
}

void CDESDlg::OnExit() 
{
	// TODO: Add your command handler code here
	OnOK();
}

void CDESDlg::OnClear() 
{
	// TODO: Add your command handler code here
	m_strText="";
	UpdateData(FALSE);
}

void CDESDlg::OnAuthor() 
{
	AfxMessageBox("中山大学软件学院\n\n软件工程00级  吴丹\n\n",MB_ICONINFORMATION);
}


void CDESDlg::OnCipherbutton() 
{
	// TODO: Add your control notification handler code here
	KEY_BIO();
	if(m_runable){
		DES_ENCIPHER();
	}
}

void CDESDlg::OnDecipherbutton() 
{
	// TODO: Add your control notification handler code here
	KEY_BIO();
	if(m_runable){
		DES_DECIPHER();
	}
}

void CDESDlg::OnExitbutton() 
{
	// TODO: Add your control notification handler code here
	OnOK();
}

void CDESDlg::DES_DECIPHER()
{
	int  i,j,t2[65];  //用来存放经过IP初始置换后的密文
    int IP_REVERSE[64]={40,8,48,16,56,24,64,32,
						39,7,47,15,55,23,63,31,
						38,6,46,14,54,22,62,30,
						37,5,45,13,53,21,61,29,
						36,4,44,12,52,20,60,28,
					 	35,3,43,11,51,19,59,27,
						34,2,42,10,50,18,58,26,
						33,1,41,9,49,17,57,25};
  int ip[65]={58,50,42,34,26,18,10,2,
	          60,52,44,36,28,20,12,4,
	          62,54,46,38,30,22,14,6,
	          64,56,48,40,32,24,16,8,
	          57,49,41,33,25,17,9,1,
	          59,51,43,35,27,19,11,3,
	          61,53,45,37,29,21,13,5,
	          63,55,47,39,31,23,15,7};      //IP初始置换表
	int	k0[57],
        C0[29],D0[29];//C代表p56置换后的左半部分，D代表右半部分	
	//P56置换表
	int P56[57]={57,49,41,33,25,17,9,1,58,50,42,34,26,18,
	              10,2,59,51,43,35,27,19,11,3,60,52,44,36,
	              63,55,47,39,31,23,15,7,62,54,46,38,30,22,
	              14,6,61,53,45,37,29,21,13,5,28,20,12,4};
	/*******************************************************/
	//生成子密钥
	for(i=1;i<57;i++)
	  k0[i]=Key[P56[i-1]];
    for(i=1;i<29;i++)
	  C0[i]=k0[i];
	for(i=29;i<=56;i++)
	  D0[i-28]=k0[i];

	int CE[29],DE[29],Cx[29],Dx[29];
	for(i=1;i<=28;i++){
		CE[i]=C0[i];
		DE[i]=D0[i];
	}
	for(int num=1;num<=16;num++){
		DES_GenerateSubkey(CE, DE, 
						   Cx, Dx,K,num);
		for(i=1;i<=28;i++){
			CE[i]=Cx[i];
			DE[i]=Dx[i];
		}
	}
	//生成完毕
  /*******************************************************/
  /**********/
  /*开始解密*/
  /**********/
  m_ctlProgress.SetPos(0);
  m_StrCiphered=m_strText;
  m_StrSource="";
  m_strText="";
  long len=m_StrCiphered.GetLength();
  long constlen=len;
  if(len%88!=0&&len%88<85){        //密文不完整
	  MessageBox("密文不完整!","密文错",MB_OK|MB_ICONERROR);
	  m_runable=false;
  }
  else{
	  if(len%88!=0)
		  len+=(88-len%88);
	  int x=0;       
	  while((len-=11*8)>=0){
		  for(i=1;i<=64;i++){
			  t1[i]=int(m_StrCiphered.GetAt(x)-'0');
		      if(t1[i]!=0&&t1[i]!=1){      //密文不合规范
				  MessageBox("密文不符合规范!","密文错",MB_OK|MB_ICONERROR);
			      m_runable=false;
			      break;
			  }
			  if(i%8==0)
				  x+=4;
			  else 
				  x++;
		  }
	      if(m_runable==false)
			  break;
		  for(i=1;i<=64;i++)
		  {