encryptdlg.cpp

vc6下的rc4加密小程序。运行一次加密

// encryptDlg.cpp : implementation file
//

#include "stdafx.h"
#include <fstream.h>
#include "encrypt.h"
#include "encryptDlg.h"

#define AFX_RC4
#include "rc4.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()

/////////////////////////////////////////////////////////////////////////////
// CEncryptDlg dialog

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

void CEncryptDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEncryptDlg)
	DDX_Text(pDX, IDE_FILE_NAME, m_strOpenFileName);
	DDX_Text(pDX, IDE_SAVE_PATH, m_strSvaePath);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEncryptDlg, CDialog)
	//{{AFX_MSG_MAP(CEncryptDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CLOSE()
	ON_BN_CLICKED(IDC_ENCRYPT_BROWSE, OnEncryptBrowse)
	ON_BN_CLICKED(IDC_SAVE_BROWSE, OnSaveBrowse)
	ON_BN_CLICKED(IDC_ENCRYPT, OnEncrypt)
	ON_BN_CLICKED(IDC_CANCEL, OnCancel)
	ON_EN_CHANGE(IDE_SAVE_PATH, OnChangeSavePath)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEncryptDlg message handlers

BOOL CEncryptDlg::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 CEncryptDlg::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 CEncryptDlg::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 CEncryptDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEncryptDlg::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	
//	CDialog::OnClose();
	CDialog::OnCancel();

}

void CEncryptDlg::OnCancel() 
{
	// TODO: Add your control notification handler code here
//	CDialog::OnClose();
	CDialog::OnCancel();
}



void CEncryptDlg::OnEncryptBrowse() 
{
	// TODO: Add your control notification handler code here
//	CFileDialog OpenFile(TRUE,NULL,NULL,OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"TEXT Files (*.txt)|*.txt|All Files (*.*)|*.*||",this);
	CFileDialog OpenFile(TRUE,NULL,NULL,OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"text Files (*.txt)|*.txt||",this);
	if(OpenFile.DoModal() == IDOK)
	{
		m_strFileTitle = OpenFile.GetFileTitle();
		m_strOpenFileName = OpenFile.GetPathName();
		UpdateData(false);
	}
}

void CEncryptDlg::OnSaveBrowse() 
{
	// TODO: Add your control notification handler code here
//	CFileDialog SaveFile(FALSE,".en",m_strFileTitle,OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"TEXT Files (*.txt)|*.txt|encrypt Files (*.en)|*.en|All Files (*.*)|*.*||",this);
	CFileDialog SaveFile(FALSE,".txt",m_strFileTitle,OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"text Files (*.txt)|*.txt||",this);
	//	CFileDialog SaveFile(FALSE,NULL,m_strFileTitle,OFN_FILEMUSTEXIST|OFN_HIDEREADONLY,"TEXT Files (*.txt)|*.txt|encrypt Files (*.en)|*.en|All Files (*.*)|*.*||",this);
	if(SaveFile.DoModal() == IDOK)
	{
		m_strSvaePath = SaveFile.GetPathName();	
		UpdateData(false);
	}
	
}

void CEncryptDlg::OnEncrypt() 
{
	// TODO: Add your control notification handler code here
	//判断源文件路径名与目的文件路径名是否相同
	UpdateData(TRUE);
	m_strOpenFileName.TrimLeft(' ');
	m_strOpenFileName.TrimRight(' ');
	m_strSvaePath.TrimLeft(' ');
	m_strSvaePath.TrimRight(' ');
	BOOL bSourceDestSame = FALSE;
	if( m_strOpenFileName == m_strSvaePath )
	{
		bSourceDestSame = TRUE;
		m_strSvaePath += ".temp!!";
	}

	ifstream infile(m_strOpenFileName);
	ofstream outfile(m_strSvaePath);
	if(!infile||!outfile)
	{
		AfxMessageBox("请输入合法的保存文件");
		return;
	}


	struct rc4_state s;
	UCHAR keys[11]={0x01,0x23,0x36,0x47,0x65,0x71,0x89,0xab,0xb1,0xcd,0xef};

	char buff[256];
	memset(buff,0,256);

	while(infile >>buff)
	{
		int len = lstrlen(buff);
		rc4_setup( &s, keys,11);
		rc4_crypt( &s,(UCHAR *) buff, len);
		outfile<<buff<<endl;
		memset(buff,0,256);
	}

	infile.close();
	outfile.close();
	
	if( TRUE == bSourceDestSame )
	{
		CFile::Remove( m_strOpenFileName);
		CFile::Rename( m_strSvaePath, m_strOpenFileName);
	}


	return;
}

void CEncryptDlg::OnChangeSavePath() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(true);
	
}