templetdlg.cpp

des的实现

// templetDlg.cpp : implementation file
//

#include "stdafx.h"
#include "templet.h"
#include "templetDlg.h"
#include <stdlib.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
const int radix=8;
const char  IV[8]={1,'2','3','4','5','6','7','8'};
const int IP[64] = {
	58, 50, 42, 34, 26, 18, 10, 2, 
		60, 52, 44, 36, 28, 20, 12, 4,
		62, 54, 46, 38, 30, 22, 14, 6, 
		64, 56, 48, 40, 32, 24, 16, 8,
		57, 49, 41, 33, 25, 17,  9, 1, 
		59, 51, 43, 35, 27, 19, 11, 3,
		61, 53, 45, 37, 29, 21, 13, 5, 
		63, 55, 47, 39, 31, 23, 15, 7
};
const int IPR[64] = {
	40, 8, 48, 16, 56, 24, 64, 32, 
		39, 7, 47, 15, 55, 23, 63, 31,
		38, 6, 46, 14, 54, 22, 62, 30, 
		37, 5, 45, 13, 53, 21, 61, 29,
		36, 4, 44, 12, 52, 20, 60, 28, 
		35, 3, 43, 11, 51, 19, 59, 27,
		34, 2, 42, 10, 50, 18, 58, 26, 
		33, 1, 41,  9, 49, 17, 57, 25
};
// expansion operation matrix
const int E[48] = {
	32, 1,  2,  3,  4,  5,  
		4,  5,  6,  7,  8,  9,
		8,  9,  10, 11, 12, 13, 
		12, 13, 14, 15, 16, 17,
		16, 17, 18, 19, 20, 21, 
		20, 21, 22, 23, 24, 25,
		24, 25, 26, 27, 28, 29, 
		28, 29, 30, 31, 32,  1
};
// 32-bit permutation function P used on the output of the S-boxes 
const int P[32] = {
	16, 7,  20, 21, 
		29, 12, 28, 17, 
		1,  15, 23, 26, 
		5,  18, 31, 10,
		2,  8,  24, 14, 
		32, 27, 3,  9,  
		19, 13, 30, 6,  
		22, 11, 4,  25
};
// permuted choice table (key) 
const int PC1[56] = {
	57, 49, 41, 33, 25, 17,  9,  1, 58, 50, 42, 34, 26, 18,
		10,  2, 59, 51, 43, 35, 27, 19, 11,  3, 60, 52, 44, 36,
		63, 55, 47, 39, 31, 23, 15,  7, 62, 54, 46, 38, 30, 22,
		14,  6, 61, 53, 45, 37, 29, 21, 13,  5, 28, 20, 12,  4
};
// permuted choice key (table) 
const int PC2[48] = {
	14, 17, 11, 24,  1,  5,  3, 28, 15,  6, 21, 10,
		23, 19, 12,  4, 26,  8, 16,  7, 27, 20, 13,  2,
		41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
		44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
};
const int LOOP[16] = {
	1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1
};
// The (in)famous S 
const int S[8][4][16] = {
	// S1 
	14,	 4,	13,	 1,  2, 15, 11,  8,  3, 10,  6, 12,  5,  9,  0,  7,
		0, 15,  7,  4, 14,  2, 13,  1, 10,  6, 12, 11,  9,  5,  3,  8,
		4,  1, 14,  8, 13,  6,  2, 11, 15, 12,  9,  7,  3, 10,  5,  0,
		15, 12,  8,  2,  4,  9,  1,  7,  5, 11,  3, 14, 10,  0,  6, 13,
		// S2 
		15,  1,  8, 14,  6, 11,  3,  4,  9,  7,  2, 13, 12,  0,  5, 10,
		3, 13,  4,  7, 15,  2,  8, 14, 12,  0,  1, 10,  6,  9, 11,  5,
		0, 14,  7, 11, 10,  4, 13,  1,  5,  8, 12,  6,  9,  3,  2, 15,
		13,  8, 10,  1,  3, 15,  4,  2, 11,  6,  7, 12,  0,  5, 14,  9,
		// S3 
		10,  0,  9, 14,  6,  3, 15,  5,  1, 13, 12,  7, 11,  4,  2,  8,
		13,  7,  0,  9,  3,  4,  6, 10,  2,  8,  5, 14, 12, 11, 15,  1,
		13,  6,  4,  9,  8, 15,  3,  0, 11,  1,  2, 12,  5, 10, 14,  7,
		1, 10, 13,  0,  6,  9,  8,  7,  4, 15, 14,  3, 11,  5,  2, 12,
		// S4 
		7, 13, 14,  3,  0,  6,  9, 10,  1,  2,  8,  5, 11, 12,  4, 15,
		13,  8, 11,  5,  6, 15,  0,  3,  4,  7,  2, 12,  1, 10, 14,  9,
		10,  6,  9,  0, 12, 11,  7, 13, 15,  1,  3, 14,  5,  2,  8,  4,
		3, 15,  0,  6, 10,  1, 13,  8,  9,  4,  5, 11, 12,  7,  2, 14,
		// S5 
		2, 12,  4,  1,  7, 10, 11,  6,  8,  5,  3, 15, 13,  0, 14,  9,
		14, 11,  2, 12,  4,  7, 13,  1,  5,  0, 15, 10,  3,  9,  8,  6,
		4,  2,  1, 11, 10, 13,  7,  8, 15,  9, 12,  5,  6,  3,  0, 14,
		11,  8, 12,  7,  1, 14,  2, 13,  6, 15,  0,  9, 10,  4,  5,  3,
		// S6 
		12,  1, 10, 15,  9,  2,  6,  8,  0, 13,  3,  4, 14,  7,  5, 11,
		10, 15,  4,  2,  7, 12,  9,  5,  6,  1, 13, 14,  0, 11,  3,  8,
		9, 14, 15,  5,  2,  8, 12,  3,  7,  0,  4, 10,  1, 13, 11,  6,
		4,  3,  2, 12,  9,  5, 15, 10, 11, 14,  1,  7,  6,  0,  8, 13,
		// S7 
		4, 11,  2, 14, 15,  0,  8, 13,  3, 12,  9,  7,  5, 10,  6,  1,
		13,  0, 11,  7,  4,  9,  1, 10, 14,  3,  5, 12,  2, 15,  8,  6,
		1,  4, 11, 13, 12,  3,  7, 14, 10, 15,  6,  8,  0,  5,  9,  2,
		6, 11, 13,  8,  1,  4, 10,  7,  9,  5,  0, 15, 14,  2,  3, 12,
		// S8 
		13,  2,  8,  4,  6, 15, 11,  1, 10,  9,  3, 14,  5,  0, 12,  7,
		1, 15, 13,  8, 10,  3,  7,  4, 12,  5,  6, 11,  0, 14,  9,  2,
		7, 11,  4,  1,  9, 12, 14,  2,  0,  6, 10, 13, 15,  3,  5,  8,
		2,  1, 14,  7,  4, 10,  8, 13, 15, 12,  9,  0,  3,  5,  6, 11
};

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CTempletDlg dialog

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

void CTempletDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTempletDlg)
	DDX_Text(pDX, IDC_EDIT_CIPHER, m_cipher);
	DDX_Text(pDX, IDC_EDIT_KEY, m_key);
	DDV_MaxChars(pDX, m_key, 8);
	DDX_Text(pDX, IDC_EDIT_PLAIN, m_plain);
	DDX_Text(pDX, IDC_EDIT_PLANDUP, m_plaindup);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTempletDlg, CDialog)
//{{AFX_MSG_MAP(CTempletDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_ENCRYPT, OnButtonEncrypt)
ON_BN_CLICKED(IDC_BUTTON_DECRYPT, OnButtonDecrypt)
ON_BN_CLICKED(IDC_BUTTON_PRODUCE, OnButtonProduce)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTempletDlg message handlers

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

void CTempletDlg::OnButtonEncrypt() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	
	mode_flag=true;
	
	int len=m_plain.GetLength();
	int len_virtual;
	if(len%radix==0)
		len_virtual=len/8;
	else//用' '填充m_plain至64bit的倍数
	{
		len_virtual=len/8+1;
		for(int i=0;i<len_virtual*8-len;i++)
			m_plain+=" ";
	}
	//plain和plain_dup都用于存放明文
	char *plain=new char[len_virtual*radix+1];
	char *plain_dup=new char[len_virtual*radix];
	//cipher用于存放密文
	char *cipher=new char[len_virtual*radix+1];
	cipher[len_virtual*radix]='\0';
	
	if(plain_dup==NULL || plain==NULL||cipher==NULL)
	{
		MessageBox("内存分配失败!");
		return;
	}
	else
	{
		char temp_key[9];
		char cipher_dup[8];
		char key[8];
		char C[4];
		char D[4];
		char K[16*6];
		char L[4];
		char R[4];
		int i=0;
		int n=0;
		int k=0;
		len=m_key.GetLength();
		if(len!=8)//用' '填充m_key至64bit
		{
			len=8-len;
			for(i=0;i<len;i++)
				m_key+=" ";
		}
		//从m_key中获得密钥放入temp_key中
		strcpy(temp_key,(LPCTSTR)m_key);
		
		////////////////////////////////////////////////////////////
		//置换PC-1,结果放入key中
		for(k=0;k<56;k++)
			Set(key,0,k,Get(temp_key,0,PC1[k]-1,8),8);
		//将key分为C,D两部分
		for(k=0;k<4;k++)
		{
			C[k]=key[k];
			D[k]=key[k+3];
		}
		//正式生成子密钥,放入K中
		produce_key(C,D,K);
		//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>		
		//从m_plain中获得明文放入plain中
		strcpy(plain,(LPCTSTR)m_plain);
		for(i=0;i<len_virtual;i++)
		{