rc5dlg.cpp

这是RC5算法的实现

// rc5Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "rc5.h"
#include "rc5Dlg.h"
#include "RC5Base.h"


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


CRC5Base m_CRC5Base;

static void expand0(unsigned char *in,char *out)
{
	int divide;
	int i,j;

	for (i=0;i<8;i++)
	{
		divide=0x80;
		for (j=0;j<8;j++)
		{
			*out++=(in[i]/divide)&1;
			divide/=2;
		}
	}
}

static void compress0(char *out,unsigned char *in)
{
	int times;
	int i,j;

	for (i=0;i<8;i++)
	{
		times=0x80;
		in[i]=0;
		for (j=0;j<8;j++)
		{
			in[i]+=(*out++)*times;
			times/=2;
		}
	}
}
// Cstring m_strKey;
/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CRc5Dlg dialog

CRc5Dlg::CRc5Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRc5Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRc5Dlg)
		// 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 CRc5Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRc5Dlg)
	DDX_Text(pDX, IDC_EDIT1, m_strKey);
	DDX_Text(pDX, IDC_EDIT2, m_strOriData);
	DDX_Text(pDX, IDC_EDIT_ENCRYPT, m_strEncrypt);
	DDX_Text(pDX, IDC_EDIT_DECRYPT, m_strDecrypt);
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRc5Dlg, CDialog)
	//{{AFX_MSG_MAP(CRc5Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit1)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_EN_CHANGE(IDC_EDIT2, OnChangeEdit2)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRc5Dlg message handlers

BOOL CRc5Dlg::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 CRc5Dlg::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 CRc5Dlg::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 CRc5Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CRc5Dlg::OnChangeEdit1() 
{

	
}

void CRc5Dlg::OnButton1() 
{
    FILE *fpk,*fpp,*fpe;
	int i;
	UpdateData();
	m_strKey.TrimLeft();
	m_strKey.TrimRight();
	m_strOriData.TrimLeft();
	m_strOriData.TrimRight();

	if ( m_strKey.IsEmpty() )
	{
		MessageBox("Please input the KEY!");
		GetDlgItem(IDC_EDIT1)->SetFocus();
		return;
	}
	if ( m_strOriData.IsEmpty() )
	{
		MessageBox("Please input the original data!");
		GetDlgItem(IDC_EDIT2)->SetFocus();
		return;
	}
//打开三个文件，密钥文件，明文文件和密文文件	
	if((fpk=fopen("key.dat","w"))==NULL)
	{
		return;
	}
	if((fpp=fopen("plain.dat","w"))==NULL)
	{
		return;
	}
	if((fpe=fopen("cipher.dat","w"))==NULL)
	{
		return;
	}
	
	char szKey[16];
	char data[32];

//将输入的密钥和明文拷贝到以上的两个数组中
    strncpy(szKey,(LPCTSTR)m_strKey,16);
	strncpy(data,(LPCTSTR)m_strOriData,32);
//文件的写入
    for(i=0;i<16;i++)
	   fprintf(fpk,"%d\n",szKey[i]);
    for(i=0;i<32;i++)
	   fprintf(fpp,"%d\n",data[i]);
//加密过程
	m_CRC5Base.CipherInitail(0);
    m_CRC5Base.KeyInitial((unsigned char *)szKey, 16, 0);	    
	m_CRC5Base.Encrypt((unsigned char *)data, 8 );
    
	for(i=0;i<32;i++)
	   fprintf(fpe,"%d\n",data[i]);
    m_strEncrypt=data;
	UpdateData(FALSE);
	fclose(fpk);
	fclose(fpp);
	fclose(fpe);

}

void CRc5Dlg::OnChangeEdit2() 
{
	// 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
	
}

void CRc5Dlg::OnButton2() 
{

	UpdateData();

	m_strKey.TrimLeft();
	m_strKey.TrimRight();

	if ( m_strKey.IsEmpty() )
	{
		MessageBox("Please input the KEY!");
		GetDlgItem(IDC_EDIT1)->SetFocus();
		return;
	}
	
	char szKey[16];
	char data[32];  
	strncpy(szKey,(LPCTSTR)m_strKey,8);
	strncpy(data,(LPCTSTR)m_strEncrypt,32);   
 //解密过程  
	m_CRC5Base.Decrypt((unsigned char *)data, 8 );
   
   	m_strDecrypt=data;
	UpdateData(FALSE);
}