descryptdlg.cpp

DES加密代码

// DesCryptDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DesCrypt.h"
#include "DesCryptDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDesCryptDlg dialog

CDesCryptDlg::CDesCryptDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDesCryptDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDesCryptDlg)
	m_Crypt = _T("海内存知己,天涯若比邻");
	m_Decrypt = _T("");
	m_Key = _T("重邮软件学院");
	m_Resume = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDesCryptDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDesCryptDlg)
	DDX_Text(pDX, IDC_ECrypt, m_Crypt);
	DDX_Text(pDX, IDC_EDecrypt, m_Decrypt);
	DDX_Text(pDX, IDC_EKey, m_Key);
	DDV_MaxChars(pDX, m_Key, 32);
	DDX_Text(pDX, IDC_EResume, m_Resume);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDesCryptDlg, CDialog)
	//{{AFX_MSG_MAP(CDesCryptDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_Encrypt, OnEncrypt)
	ON_BN_CLICKED(IDC_Dencrypt, OnDencrypt)
	ON_EN_CHANGE(IDC_ECrypt, OnChangeECrypt)
	ON_EN_CHANGE(IDC_EDecrypt, OnChangeEDecrypt)
	ON_EN_CHANGE(IDC_EKey, OnChangeEKey)
	ON_EN_CHANGE(IDC_EResume, OnChangeEResume)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDesCryptDlg message handlers

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

	// 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
	allLen=0;
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// 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 CDesCryptDlg::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 CDesCryptDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDesCryptDlg::OnEncrypt() 
{
CDes des;
CString inf;
int len=m_Crypt.GetLength();
if(len%8)len+=len%8;
char *out= new char[len];//必须的，要考虑到m_Crypt补0的部分
des.DoDes(out,m_Crypt.GetBuffer(0),\
		   len,m_Key.GetBuffer(0),m_Key.GetLength(),0);
m_Decrypt="";
for(int i=0;i<len;i++){
   inf.Format("%u,",(unsigned char)out[i]);
   m_Decrypt+=inf;
};
memset(all,0,80);
memcpy(all,out,len);
allLen=len;
UpdateData(FALSE);
}

void CDesCryptDlg::OnDencrypt() 
{
if(allLen==0)return ;
CDes des;
char *out=new char[allLen];
des.DoDes(out,all,\
		   allLen,m_Key.GetBuffer(0),m_Key.GetLength(),1);
out[allLen]='\0';
m_Resume=out;
allLen=0;
UpdateData(FALSE);
}

void CDesCryptDlg::OnChangeECrypt() 
{
UpdateData( );
}

void CDesCryptDlg::OnChangeEDecrypt() 
{
UpdateData( );
}

void CDesCryptDlg::OnChangeEKey() 
{
UpdateData( );
	
}

void CDesCryptDlg::OnChangeEResume() 
{
UpdateData( );
}