simplecryptdlg.cpp

这个程序用64位密码加密文件

// simplecryptDlg.cpp : implementation file
//
/*************************************************Code by Lampros Giampouras*/

#include "stdafx.h"
#include "simplecrypt.h"
#include "simplecryptDlg.h"
#include "DlgProxy.h"
#include "password.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 void OnHelpAbout();
	//}}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)
	ON_COMMAND(ID_HELP_ABOUT, OnHelpAbout)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSimplecryptDlg dialog

IMPLEMENT_DYNAMIC(CSimplecryptDlg, CDialog);

CSimplecryptDlg::CSimplecryptDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSimplecryptDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSimplecryptDlg)
	m_filepath = _T("No file selected");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_pAutoProxy = NULL;
}

CSimplecryptDlg::~CSimplecryptDlg()
{
	// If there is an automation proxy for this dialog, set
	//  its back pointer to this dialog to NULL, so it knows
	//  the dialog has been deleted.
	if (m_pAutoProxy != NULL)
		m_pAutoProxy->m_pDialog = NULL;
}

void CSimplecryptDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSimplecryptDlg)
	DDX_Control(pDX, IDC_PROGRESS1, m_progress);
	DDX_Text(pDX, IDC_FILEPATH, m_filepath);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSimplecryptDlg, CDialog)
	//{{AFX_MSG_MAP(CSimplecryptDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_CLOSE()
	ON_COMMAND(ID_HELP_ABOUT, OnHelpAbout)
	ON_BN_CLICKED(IDC_BUTTON1, OnEncryptDecrypt)
	ON_COMMAND(ID_FILE_LOAD, OnFileLoad)
	ON_COMMAND(ID_FILE_SAVE, OnFileSave)
	ON_COMMAND(ID_SHOWFILEINFO, OnShowfileinfo)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSimplecryptDlg message handlers

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

// Automation servers should not exit when a user closes the UI
//  if a controller still holds on to one of its objects.  These
//  message handlers make sure that if the proxy is still in use,
//  then the UI is hidden but the dialog remains around if it
//  is dismissed.

void CSimplecryptDlg::OnClose() 
{
	if (CanExit())
		CDialog::OnClose();
}

void CSimplecryptDlg::OnOK() 
{
	if (CanExit())
		CDialog::OnOK();
}

void CSimplecryptDlg::OnCancel() 
{
	if (CanExit())
		CDialog::OnCancel();
}

BOOL CSimplecryptDlg::CanExit()
{
	// If the proxy object is still around, then the automation
	//  controller is still holding on to this application.  Leave
	//  the dialog around, but hide its UI.
	if (m_pAutoProxy != NULL)
	{
		ShowWindow(SW_HIDE);
		return FALSE;
	}

	return TRUE;
}

void CAboutDlg::OnHelpAbout() 
{
	// TODO: Add your command handler code here
	DoModal();
}

void CSimplecryptDlg::OnHelpAbout() 
{
	// TODO: Add your command handler code here
	CAboutDlg about;

	about.DoModal();
}

void CSimplecryptDlg::OnEncryptDecrypt() 
{
	// TODO: Add your control notification handler code here

	if (length>8)
	{

/******************************************************encryption code***********************/
	// xoring every 8 bytes with the key

	password p;
z:	if (p.DoModal()==IDOK)
	{
		if(p.m_pass1!=p.m_pass2)					//checking if the passwords are the same
		{
		AfxMessageBox("passwords aren't the same");
		goto z;
		}
		if(p.m_pass1.GetLength()!=8)					//64 bit encryption (8 bytes)
		{
		AfxMessageBox("Key must be 8 characters. [64 bit encryption]");
		goto z;
		}

	for (int j=0;j<length;j=j+8)
	{
	if (j+8>length)
	break;

	bytes[j+0]^=p.m_pass1[0];				//xoring every 8 bytes
	bytes[j+1]^=p.m_pass1[1];
	bytes[j+2]^=p.m_pass1[2];
	bytes[j+3]^=p.m_pass1[3];
	bytes[j+4]^=p.m_pass1[4];
	bytes[j+5]^=p.m_pass1[5];
	bytes[j+6]^=p.m_pass1[6];
	bytes[j+7]^=p.m_pass1[7];

	m_progress.StepIt();
	info->m_progress.StepIt();
	}
/*********************************************************************************************/

	}
	}
	else
	AfxMessageBox("File must be over 8 bytes to be encrypted");
}




void CSimplecryptDlg::OnFileLoad() 
{
	// TODO: Add your command handler code here
	if (length>1)
	delete info;


	static char BASED_CODE szFilter[]="Load a File (*.*)|*.*||";
	CFileDialog t(TRUE,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,szFilter);
	if (t.DoModal()==IDOK)
	{
	m_filepath=t.GetPathName();				//enter the file
	m_filename=t.GetFileName();

	CFile f;
	f.Open(m_filepath,CFile::modeRead|CFile::typeBinary);
	length=f.GetLength();					//the current logical length of the file in bytes

	bytes=new unsigned char[length];			//table holding the bytes of the file
	f.Read(bytes,length);

	m_progress.SetRange32(0,length);
	m_progress.SetStep(8);
	m_progress.SetPos(0);

	UpdateData (FALSE);


	info=new fileinfo;
	info->Create(IDD_FILEINFO);
	info->ShowWindow(SW_SHOW);

	info->updateinfo(m_filename,length);

	info->m_progress.SetRange32(0,length);
	info->m_progress.SetStep(8);
	info->m_progress.SetPos(0);
	}
}

void CSimplecryptDlg::OnFileSave() 
{
	// TODO: Add your command handler code here

	CString file;
	static char BASED_CODE szFilter[]="Simple Crypt File (*.crp)|*.crp | All Files (*.*)|*.*||";
	CFileDialog t(FALSE,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,szFilter);
	if (t.DoModal()==IDOK)
	{
	file=t.GetPathName();				//write the file

	CFile cf(file+".crp",CFile::modeCreate|CFile::modeWrite);
	cf.Write(bytes,length);
	cf.Close();

	m_progress.SetPos(0);
	info->m_progress.SetPos(0);

	delete bytes;

	m_filepath="No file selected";
	info->updateinfo("No file selected",0);

	length=0;

	UpdateData(FALSE);

	delete info;
	}
}

void CSimplecryptDlg::OnShowfileinfo() 
{
	// TODO: Add your command handler code here
	if (length>1)
	{

	if (info->shown==true)
	{
	delete info;

	info=new fileinfo;
	info->Create(IDD_FILEINFO);
	info->ShowWindow(SW_SHOW);
	}
	else
	{
	info=new fileinfo;
	info->Create(IDD_FILEINFO);
	info->ShowWindow(SW_SHOW);
	}

	info->updateinfo(m_filename,length);
	}
	else
	AfxMessageBox("No file loaded");
}