desddlg.cpp

自己写的一个DES加密算法软件,在VC环境写的,编译后,对文档进行加密解密.使用方法从界面上一目了然.

// DesDDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DesD.h"
#include "DesDDlg.h"
#include "Des.h"
#include "Global.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()

/////////////////////////////////////////////////////////////////////////////
// CDesDDlg dialog

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

void CDesDDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDesDDlg)
	DDX_Control(pDX, IDC_CHECK2, m_CheckHint);
	DDX_Control(pDX, IDC_CHECK1, m_Check);
	DDX_Control(pDX, IDC_PROGRESS1, m_Progress);
	DDX_Control(pDX, IDC_CONFIRMPW, m_ConKey);
	DDX_Control(pDX, IDC_DESPASSWD, m_NewKey);
	DDX_Control(pDX, IDC_RUN, m_btRun);
	DDX_Control(pDX, IDC_EDITOUTPUT, m_editOutFile);
	DDX_Control(pDX, IDC_EDITINPUT, m_editInputFile);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDesDDlg, CDialog)
	//{{AFX_MSG_MAP(CDesDDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_INPUTFILE, OnInputfile)
	ON_BN_CLICKED(IDC_SELECTDIR, OnSelectdir)
	ON_BN_CLICKED(IDC_RUN, OnRun)
	ON_BN_CLICKED(IDC_CHECK1, OnCheck1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDesDDlg message handlers

BOOL CDesDDlg::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
	m_Progress.SetPos(0);
	m_Progress.SetStep(1);
	m_CheckHint.SetCheck(1);
	// TODO: Add extra initialization here
	//m_editOutFile.SetWindowText("C:\\");
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CDesDDlg::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 CDesDDlg::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 CDesDDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDesDDlg::OnInputfile() 
{
	// TODO: Add your control notification handler code here
	CString m_strFileName;
	CString right4;
	CFileDialog mFileDlg(TRUE, NULL,NULL, OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT|OFN_ALLOWMULTISELECT,"All Files (*.*)|*.*| |", AfxGetMainWnd());
	if(mFileDlg.DoModal()==IDOK)
	{
		m_editInputFile.SetWindowText(mFileDlg.GetPathName());
		m_strFileName=mFileDlg.GetPathName();
		right4 = m_strFileName.Right(4);
		right4.MakeUpper();
		if(!right4.Compare(".DES"))
		{
			m_btRun.SetWindowText("解密");
			
			m_editOutFile.SetWindowText(mFileDlg.GetPathName().Left(m_strFileName.GetLength()-4));
		}
		else
		{
			m_btRun.SetWindowText("加密");
			m_editOutFile.SetWindowText(mFileDlg.GetPathName()+".DES");
		}
	}
}

void CDesDDlg::OnSelectdir() 
{
	// TODO: Add your control notification handler code here
	CString m_strFolder;
	CString m_strOldFileName;
	int length;
	m_editOutFile.GetWindowText(m_strOldFileName);
	length = m_strOldFileName.ReverseFind('\\');
	if(length>0)
		m_strOldFileName = m_strOldFileName.Right(m_strOldFileName.GetLength()-length-1);
	m_strFolder = "C:\\";
	if(g_fSelectFolderDlg(&m_strFolder,m_strFolder,false))
	{
		UpdateData(false);
		m_editOutFile.SetWindowText(m_strFolder+m_strOldFileName);
	}	
	
}

void CDesDDlg::OnRun() 
{
	// TODO: Add your control notification handler code here
//	UpDate(true);
	CString rstrFile,wstrFile;
	CTime beginTime=CTime::GetCurrentTime();
	CString newKey,conKey;
	CString Caption;
	bool Mode;
	m_btRun.GetWindowText(Caption);
	if(!Caption.Compare("运行")) return;
	if(!Caption.Compare("加密"))
		Mode = ENCRYPT;
	else
		Mode = DECRYPT;
	m_editInputFile.GetWindowText(rstrFile);
	m_editOutFile.GetWindowText(wstrFile);
	m_NewKey.GetWindowText(newKey);
	m_ConKey.GetWindowText(conKey);
	if(rstrFile.IsEmpty())
	{
		MessageBox("请选择需要加/解密的文件！","输入错误",MB_OK|MB_ICONSTOP);
		return;
	}
	if(newKey.IsEmpty()||newKey.IsEmpty()||newKey!=conKey)
	{
		MessageBox("密钥输入错误，请重新输入！","输入错误",MB_OK|MB_ICONSTOP);
		m_NewKey.SetWindowText("");
		m_ConKey.SetWindowText("");
		return;
	}
	CFile rFile,wFile;
	if(rFile.Open(rstrFile,CFile::modeRead|CFile::typeBinary)==0)
		return;
	wFile.Open(wstrFile,CFile::modeCreate|CFile::modeNoTruncate|CFile::modeWrite|CFile::typeBinary);


	int nCount;
	int nMod;
	CString ss;

	char Buffer[8];
	nMod = rFile.GetLength()%8;
	nCount = rFile.GetLength()/8;

	if(Mode == DECRYPT && nMod!=0)	
	{
		nCount--;
	}
	m_Progress.SetRange(0,nCount);

	//-------------------------加解密模块----------------------

	Des_SetKey(newKey);
	for(int i=0;i<nCount;i++)
	{
		m_Progress.StepIt();
		rFile.Read(Buffer,8);
		Des_Run(Buffer,Buffer,Mode);
		wFile.Write(Buffer,8);
	}

	if(Mode == DECRYPT && nMod!=0)	
	{
		char k[1];
		int Num;
		rFile.Read(Buffer,8);
		Des_Run(Buffer,Buffer,Mode);
		rFile.Read(k,1);
		Num = k[0]-'0';
		wFile.Write(Buffer,Num);
	}	
	if(Mode == ENCRYPT && nMod)
	{
		strcpy(Buffer,"00000000");
		rFile.Read(Buffer,nMod);
		Des_Run(Buffer,Buffer,Mode);
		wFile.Write(Buffer,8);
		Buffer[0]='0'+nMod;
		wFile.Write(Buffer,1);
	}
	rFile.Close();
	wFile.Close();
	//-------------------------加解密模块----------------------
	CTimeSpan timeSpan=CTime::GetCurrentTime()-beginTime;
	CString TimeSpan;
	TimeSpan.Format("操作耗时%d秒！",timeSpan.GetSeconds());

	if(m_Check.GetCheck())
	{
		if(m_CheckHint.GetCheck())
		{
			if(MessageBox("确定要删除原文件吗？","提示信息",MB_OKCANCEL|MB_ICONINFORMATION)==IDOK)
				DeleteFile(rstrFile);
		}
		else
			DeleteFile(rstrFile);
	}

	MessageBox(rstrFile+" "+Caption+"完成，"+TimeSpan+"谢谢您使用本加密工具！","提示信息",MB_OK|MB_ICONINFORMATION);

	m_Progress.SetPos(0);

	m_editInputFile.SetWindowText("");
	m_editOutFile.SetWindowText("");
	m_NewKey.SetWindowText("");
	m_ConKey.SetWindowText("");

	m_btRun.SetWindowText("运行");

	//---------------------------------------------------------
}

void CDesDDlg::OnCheck1() 
{
	// TODO: Add your control notification handler code here
	if(m_Check.GetCheck())
		m_CheckHint.EnableWindow(true);
	else
		m_CheckHint.EnableWindow(false);
}