desdlg.cpp

数据加密标准（DES）密码算法

// DESDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DES.h"
#include "DESDlg.h"

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

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

CDESDlg::CDESDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDESDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDESDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}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)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDESDlg, CDialog)
	//{{AFX_MSG_MAP(CDESDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)

	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

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

BOOL CDESDlg::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
	
	// 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 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::OnOK() 
{
	//stra为密钥,,,,,,stra1为明文
	CString stra;
	GetDlgItemText(IDC_EDIT1,stra);
	if(stra.IsEmpty()) 
	{
		MessageBox("   密钥不能输入为空哈!   ","DES错误提示!");
		return;
	}
	else
	{
		MessageBox("你输入的密钥是 "+stra);
	}


	CString stra1;
	GetDlgItemText(IDC_EDIT_MW,stra1);
	if(stra1.IsEmpty()) 
	{
		MessageBox("   明文不能输入为空哈!   ","DES错误提示!");
		return;
	}
	else
	{
		CFile file11;
		//file11.Open(_T("D:\\m1.txt"),CFile::modeCreate);
		//file11.Open(_T("D:\\m1.txt"),CFile::modeCreate|CFile::modeNoTruncate|CFile::modeReadWrite);
		file11.Open(_T("D:\\m1.txt"),CFile::modeCreate|CFile::modeReadWrite);
		//file11.SeekToEnd(); //将指针移至文件末尾进行追加
		//file11.SeekToBegin();///移到文件头
		CString strValue;
		GetDlgItemText(IDC_EDIT_MW,strValue);
		
		file11.Write(strValue,strValue.GetLength());
		file11.Close();
		MessageBox("你输入的明文是 "+stra1);
	}

	char c[512];
	strcpy(c, stra); 
	//MessageBox(c);
	//int alen1=strlen(c);
	DESF testdes;
	//CString stra="aaaaaa";
	//char deskey1[]="security";
	//char deskey2[]="tecurity";
	float bitdiff8byte=0;

	testdes.desEncode("d:\m1.txt",c,"d:\c1.txt");  //加密，密文存放c1

	//cout<<"The Encode message = "<<endl;testdes.dispfile("d:\c1.txt");  //显示密文
	CStdioFile file12121;
	file12121.Open("D:\\c1.txt", CFile::modeRead | CFile::typeText);
	CString str;
	CString strTemp;
	while(file12121.ReadString(strTemp))
	{
	str += strTemp + "";
	}  
	file12121.Close();
	SetDlgItemText(IDC_EDIT2,str);
}

void CDESDlg::OnButton1() 
{
	DESF testdes;
	//float bitdiff8byte=0;
	CString stra;
	GetDlgItemText(IDC_EDIT1,stra);
	char c[512];
	strcpy(c, stra); 
	testdes.desDecode("d:\c1.txt",c,"d:\mo1.txt");  //解密，密文存放c1，明文存放mo1

	CStdioFile file12121;
	file12121.Open("D:\\mo1.txt", CFile::modeRead | CFile::typeText);
	CString str;
	CString strTemp;
	while(file12121.ReadString(strTemp))
	{
	str += strTemp + "";
	}  
	file12121.Close();
	SetDlgItemText(IDC_EDIT3,str);
}