DES 算法 源码 C++

// DESDlg.cpp : implementation file ////////////by kingui//////////////////////// #include "stdafx.h" #include "DES.h" #include "DESDlg.h" #include "table.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif CString S; int f[16][50]={0}; ///////////////////////////////////////////////////////////////////////////// // 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() ///////////////////////////////////////////////////////////////////////////// // CDESDlg dialog CDESDlg::CDESDlg(CWnd* pParent /*=NULL*/) : CDialog(CDESDlg::IDD, pParent) { //{{AFX_DATA_INIT(CDESDlg) m_miwen = _T(""); m_shuchu = _T(""); m_mingwen = _T(""); m_key = _T(""); m_miwen2 = _T(""); m_key2 = _T(""); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CDESDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CDESDlg) DDX_Text(pDX, IDC_EDIT3, m_miwen); DDX_Text(pDX, IDC_EDIT4, m_shuchu); DDX_Text(pDX, IDC_EDIT1, m_mingwen); DDX_Text(pDX, IDC_EDIT2, m_key); DDX_Text(pDX, IDC_EDIT5, m_miwen2); DDX_Text(pDX, IDC_EDIT7, m_key2); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CDESDlg, CDialog) //{{AFX_MSG_MAP(CDESDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BUTTON1, OnButton1) ON_BN_CLICKED(IDC_BUTTON2, OnButton2) ON_BN_CLICKED(IDC_BUTTON3, OnButton3) ON_BN_CLICKED(IDC_BUTTON6, OnButton6) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CDESDlg message handlers BOOL CDESDlg::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 CDESDlg::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 CDESDlg::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 CDESDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CDESDlg::OnButton1() { // TODO: Add your control notification handler code here UpdateData ( true ) ; m_miwen=""; int len1,len;//输入的明文及密钥长度 int a[65]={0}; int b[65]={0}; int key_1[57]={0},key_2[49]={0}; int p_l[33]={0},p_r[33]={0}; int t[33]={0},c[33]={0},d[49]={0}; int i,j,l,m; int h1,h2; int n1,n2; int v; /*****************对密钥的处理**********************/ len1=strlen(m_key); if(len1!=8) { MessageBox("Please input the key of 8 bytes!"); return; } for(i=0;i<8;i++)//初始化密钥 { m=m_key[i]; for(j=8;j>0;j--) { a[j+8*i]=m%2; m=m/2; } } for(i=1;i<=56;i++)//密钥的置换选择1 key_1[i]=a[pc_1[i]]; //16个子密钥 for(i=0;i<=15;i++) { if(shift[i]==1) //循环左移1位 { h1=key_1[1]; h2=key_1[29]; for(j=1;j<28;j++) { key_1[j]=key_1[j+1]; key_1[j+28]=key_1[j+29]; } key_1[28]=h1; key_1[56]=h2; } else if(shift[i]==2) //循环左移2位 { h1=key_1[1]; h2=key_1[29]; for(j=1;j<28;j++) { key_1[j]=key_1[j+1]; key_1[j+28]=key_1[j+29]; } key_1[28]=h1; key_1[56]=h2; h1=key_1[1]; h2=key_1[29]; for(j=1;j<28;j++) { key_1[j]=key_1[j+1]; key_1[j+28]=key_1[j+29]; } key_1[28]=h1; key_1[56]=h2; } //置换选择56-bit映射成48-bit。各轮密钥存入f[i][49]中 for(j=1;j<=48;j++) f[i][j-1]=key_1[pc_2[j]]; } /*****************对明文的处理**********************/ int zu; int zushu; len=strlen(m_mingwen); zu=len/8; if(len%8==0)zu=zu; else if(len%8!=0)zu=zu+1; for(zushu=0;zushu<zu;zushu++) { if((zushu==zu-1)&&(len%8!=0)) { for(i=0;i<len%8;i++) //初始化明文(填充) { m=m_mingwen[zushu*8+i]; for(j=8;j>=1;j--) { a[j+8*i]=m%2; m=m/2; } } for(int x=(len%8)*8+1;x<65;x++) a[x]=0; } else for(i=0;i<8;i++)//初始化明文 { m=m_mingwen[i+zushu*8]; for(j=8;j>=1;j--) { a[j+8*i]=m%2; m=m/2; } } for(i=1;i<=64;i++)//明文的初始置换IP b[i]=a[ip[i]]; for(i=1;i<=32;i++)//将左边32位明文存入p_l[33],右边32位明文存入p_r[33]; p_l[i]=b[i]; for(i=33;i<=64;i++) p_r[i-32]=b[i]; // 16轮变换 for(i=0;i<=15;i++) { //32bit r[] 扩充/置换（表E）——〉48bit for(j=1;j<=48;j++) d[j]=p_r[e[j]]; //XOR运算 for(j=1;j<=48;j++) d[j]=d[j]^f[i][j-1]; //代换/选择S盒 for(j=0;j<=7;j++) //8个S盒，每次循环处理1个 { n1=2*d[1+j*6]+d[6+j*6]; n2=8*d[2+j*6]+4*d[3+j*6]+2*d[4+j*6]+d[5+j*6]; m=s[j][n1][n2]; for(l=4;l>=1;l--) //将十进制转化成二进制 { t[l+4*j]=m%2; m=m/2; } } for(j=1;j<=32;j++) c[j]=t[p[j]]^p_l[j];//在交换左右2部分前暂时存放于rp数组 for(j=1;j<=32;j++) //一轮结束 { p_l[j]=p_r[j]; p_r[j]=c[j]; } } for(j=1;j<=32;j++) //32位互换 { a[