desdlg.cpp

密码学实验中的DES算法

// DESDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DES.h"
#include "DESDlg.h"
#include "MyFile.h"
#include "Change.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_mingwen = _T("lerrylee");
	m_key = _T("information");
	m_miwen = _T("");
	m_radio = 1;
	m_jiemi = _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_Text(pDX, IDC_EDIT1, m_mingwen);
	DDX_Text(pDX, IDC_EDIT2, m_key);
	DDX_Text(pDX, IDC_EDIT3, m_miwen);
	DDX_Radio(pDX, IDC_RADIO1, m_radio);
	DDX_Text(pDX, IDC_EDIT4, m_jiemi);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDESDlg, CDialog)
	//{{AFX_MSG_MAP(CDESDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_JIAMI, OnJiami)
	ON_BN_CLICKED(IDC_CLEAR, OnClear)
	ON_BN_CLICKED(IDC_JIEMI, OnJiemi)
	ON_BN_CLICKED(IDC_WENJIAN, OnWenjian)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

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

BOOL CDESDlg::OnInitDialog()
{
	CDialog::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)
	{
		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
	
	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::OnJiami() 
{
	UpdateData(true);
	
	STR="";
	FLAG=1;
	cnt_a=0;

	if(m_mingwen=="")
	{
		MessageBox("请输入明文!","提示");
		return;
	}
	if(m_key.GetLength()<8)
	{
		MessageBox("密钥少于8位!","提示");
		return;
	}
	else
	{
		charToBit(m_key,0);
		Cut(m_mingwen);
	}
	m_miwen1=STR;
//----------输出密文-----------//

	if(m_radio==1)
		m_miwen=STR;
	else if(m_radio==0)
	{
		CString strDec,strBin,strHex;
	    strHex.Format("%x",STR);
		DWORD dwHex=strtoul(strHex,NULL,16);
		strDec.Format(_T("%ld"), dwHex);
	    strBin=DecToBin(strDec);

		m_miwen=strBin;
	}
//-----------------------------//
	UpdateData(false);
}

void CDESDlg::OnClear() 
{
	UpdateData(true);
	m_mingwen="";
	m_miwen="";
	m_key="";
	m_jiemi="";
	cnt_a=0;
	STR="";
	UpdateData(false);
}

void CDESDlg::OnJiemi() 
{
	UpdateData(true);

	STR="";
	FLAG=0;

	CString strDec, strBin, strHex;
	strBin=m_miwen;
	strDec=BinToDec(strBin);
	int nDec;
	nDec=atol(strDec);
	strHex.Format("%x", nDec);

	if(m_miwen=="")
	{
		MessageBox("密文为空！","提示");
		return;
	}
	if(m_key.GetLength()<8)
	{
		MessageBox("密钥字符少于八个！","提示");
		return;
	}
	else
	{
		charToBit(m_key,0);
	
		if(m_radio==1)
			CutMiwen(m_miwen);
		else if(m_radio==0)
			CutMiwen(m_miwen1);

	}
	if(cnt_a!=0)
		m_jiemi=STR.GetBufferSetLength(STR.GetLength()-cnt_a);
	else
		m_jiemi=STR;
	UpdateData(false);		
}

void CDESDlg::OnWenjian() 
{
	CMyFile file;
	file.DoModal();
}