cipherdlg.cpp

这个源码包括两个最简单的加密——置换加密和替代加密的实现

// cipherDlg.cpp : implementation file
//

#include "stdafx.h"
#include "cipher.h"
#include "cipherDlg.h"
#include "iostream.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()

/////////////////////////////////////////////////////////////////////////////
// CCipherDlg dialog

CCipherDlg::CCipherDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCipherDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCipherDlg)
	m_key1 = 0;
	m_key2 = _T("");
	m_plain = _T("");
	m_cipher = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCipherDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCipherDlg)
	DDX_Text(pDX, IDC_key1, m_key1);
	DDV_MinMaxInt(pDX, m_key1, 0, 25);
	DDX_Text(pDX, IDC_key2, m_key2);
	DDV_MaxChars(pDX, m_key2, 8);
	DDX_Text(pDX, IDC_PLAINTEXT, m_plain);
	DDX_Text(pDX, IDC_CIPHER, m_cipher);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCipherDlg, CDialog)
	//{{AFX_MSG_MAP(CCipherDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON3, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton4)
	ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCipherDlg message handlers

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

void CCipherDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here  
	UpdateData(TRUE);
	int length=m_plain.GetLength();
	char  *c= new char[length];
	char  *p= new char[length];

	strncpy(c,(LPCTSTR)m_plain, length );
    int s=0;
	for(int i=0;i<length;i++)
	{
		if(c[i]<='z'&&c[i]>='a')
		{
		  if(c[i]+m_key1<='z')  p[i]=int(c[i])+m_key1;     
          else  p[i]=int(c[i])+m_key1-26;
		}
		else 
		{ 
			MessageBox("输入有误!  请只输入'a'~~'z'之间的字符!");
	    	s=1;  break;
		}
  	}
   if(s==0)  m_cipher=p;    
  UpdateData(FALSE);
}

void CCipherDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
	int length=m_cipher.GetLength();
	char  *c= new char[length];
	char  *p;
	p=c;
	int flag=0;
	strncpy(c,(LPCTSTR)m_cipher, length );

	for(int i=0;i<length;i++)
	{
		if(c[i]<='z'&&c[i]>='a')
		{
		   if(c[i]-m_key1>='a')  p[i]=int(c[i])-m_key1;     
           else  p[i]=int(c[i])-m_key1+26;
		}
		else  
		{  
			MessageBox("输入有误!  请只输入'a'~~'z'之间的字符!");
		    flag=1; break;
		}
  	}
	if(flag==0)   m_plain=p;  
	UpdateData(FALSE);
}

void CCipherDlg::OnButton3() 
{
	// TODO: Add your control notification handler code here
    UpdateData(TRUE);

	int k,s;
	int box[8];
	
	k=atoi(m_key2);
	for(int i=7;i>=0;i--)  
	{
		box[i]=k%10;	k=k/10;   
	}
	m_key1=box[0];
   	int length=m_plain.GetLength();

	char  *c2= new char[length];
	char  *p2= new char[length]; 

	for(int n=0;n<length;n++)  p2[n]='x';

	strncpy(c2,(LPCTSTR)m_plain, length );
	int flag=0;
	

	for(int j=0;j<length;j++)
	{
		if(c2[j]<='z'&&c2[j]>='a')
		{
			s=box[j%8]+(j/8)*8-1;
			p2[s]=c2[j];
		}
		else  
		{  
			MessageBox("输入有误!  请只输入'a'~~'z'之间的字符!");
		    flag=1; break;
		}

	}
    if(flag==0) 	m_cipher=p2;
	UpdateData(FALSE);		
}

void CCipherDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	int k,s;
	int box[8];
	int box2[8];
	int flag=0;
	
	k=atoi(m_key2);
	for(int i=7;i>=0;i--)  
	{
		box[i]=k%10;	k=k/10;  
        box2[box[i]-1]=i+1;	
	}

   	int length=m_plain.GetLength();
	char  *c2= new char[length];
	strncpy(c2,(LPCTSTR)m_cipher, length );

//	if((length%8)!=0) length=length+8-(length%8);	
    char  *p2= new char[length];
	for(int n=0;n<length;n++)  p2[n]='x';
	for(int j=0;j<length;j++)
	{
		if(c2[j]<='z'&&c2[j]>='a')
		{
	    	s=box2[j%8]+(j/8)*8-1;
	    	p2[s]=c2[j];
		}
		else
		{  
			MessageBox("输入有误!  请只输入'a'~~'z'之间的字符!");
		    flag=1; break;
		}
	}	
	if (flag==0)  m_plain=p2;

	UpdateData(FALSE);	
}

void CCipherDlg::OnButton5() 
{
	// TODO: Add your control notification handler code here
	MessageBox("欢迎使用古典密码加密解密系统!  本系统只加密'a'~'z'之间的字符!");
	
}