📄 des_cryptiondlg.cpp
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// DES_CryptionDlg.cpp : implementation file
//
#include "stdafx.h"
#include "DES_Cryption.h"
#include "DES_CryptionDlg.h"
#include "string.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define lMax 10000
#define lMes 64
#define lKey 56
int X_X0[lMes+1] = { 0,58,50,42,34,26,18,10,2, //明文初始置换IP
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 } ;
int PC_PC0[lKey+1] = {0,57,49,41,33,25,17,9, //秘钥压缩换位64-56
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 };
int PC2_PC0[49] = { 0,14,17,11,24,1,5, //秘钥压缩变换56-48
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 } ;
int E_E0[49] = { 0,32,1,2,3,4,5, //E盒扩展置换 32-48
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 } ;
int C_C0[65] = { 0,40,8,48,16,56,24,64,32, //逆初始置换IP-1
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 };
int S1[4][16] = { 14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7, //S盒
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 };
int S2[4][16] = { 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 };
int S3[4][16] = { 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 };
int S4[4][16] = { 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 };
int S5[4][16] = { 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 };
int S6[4][16] = { 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 };
int S7[4][16] = { 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 };
int S8[4][16] = { 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()
/////////////////////////////////////////////////////////////////////////////
// CDES_CryptionDlg dialog
CDES_CryptionDlg::CDES_CryptionDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDES_CryptionDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDES_CryptionDlg)
m_path = _T("");
m_message = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CDES_CryptionDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDES_CryptionDlg)
DDX_Control(pDX, IDC_EDIT_CRYPT, m_crypt);
DDX_Text(pDX, IDC_EDIT_PATH, m_path);
DDX_Text(pDX, IDC_EDIT_MESSAGE, m_message);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDES_CryptionDlg, CDialog)
//{{AFX_MSG_MAP(CDES_CryptionDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_BROWER, OnButtonBrower)
ON_BN_CLICKED(IDC_BUTTON_ENCRYPTION, OnButtonEncryption)
ON_BN_CLICKED(IDC_BUTTON_EXIT, OnButtonExit)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDES_CryptionDlg message handlers
BOOL CDES_CryptionDlg::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 CDES_CryptionDlg::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 CDES_CryptionDlg::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 CDES_CryptionDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CDES_CryptionDlg::OnButtonBrower() //
{
// TODO: Add your control notification handler code here
}
void CDES_CryptionDlg::Dec_0X(int x,int a[4])
{
int i=3;
memset(a,0,sizeof(a));
while(x>0)
{
a[i] = x%2;
x = x / 2 ;
i--;
}
}
void CDES_CryptionDlg::LeftMove(int a[28],int y) //循环左移y个 ( y=1或2 )
{
int i,k1,k2;
k1=a[0];k2=a[1];
if(y==1)
{
for(i=0;i<27;i++)
a[i]=a[i+1];
a[27] = k1;
}
else
{
for(i=0;i<26;i++)
a[i]=a[i+2];
a[26]=k1;
a[27]=k2;
}
}
void CDES_CryptionDlg::Map48_32(int E0[49],int P0[33],int K[49])
{
int i,j,k;
int E_K[49];
for(i=1;i<=48;i++)
{
if(E0[i] == K[i]) E_K[i] = 0;
else E_K[i] = 1; //扩展后的L与压缩后的秘钥K异或运算变成E_K--------48位
}
int block_6[8][6];
k = 1;
for(i=0;i<8;i++)
for(j=0;j<6;j++)
{
block_6[i][j] = E_K[k]; //48位E_K分成8块
k++;
}
int rep,ir,ic;
int block_4[8][4];
for(i=0;i<8;i++)
{//6位 ---> 4位
ir = block_6[i][0] * 2 + block_6[i][5] ;
ic = block_6[i][1] * 8 + block_6[i][2] * 4 + block_6[i][3] * 2 + block_6[i][4] ;
if(i==0) rep = S1[ir][ic];
else if(i==1) rep = S1[ir][ic];
else if(i==2) rep = S1[ir][ic];
else if(i==3) rep = S1[ir][ic];
else if(i==4) rep = S1[ir][ic];
else if(i==5) rep = S1[ir][ic];
else if(i==6) rep = S1[ir][ic];
else rep = S1[ir][ic];
Dec_0X(rep,block_4[i]); //十进制转化成二进制
}
int P[33];
for(i=0,j=1;i<8;i++,j+=4)
{//8个4位块组合成32位P
P[j] = block_4[i][0];
P[j+1] = block_4[i][1];
P[j+2] = block_4[i][2];
P[j+3] = block_4[i][3];
}
int P_P0[33] = { 0,16,7,20,21,
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 };
for(i=1;i<=32;i++)
P0[i] = P[P_P0[i]];
}
void CDES_CryptionDlg::F(int L0[32],int R0[32],int K[49])
{
//F变换
int i;
int E0[49];
for(i=1;i<=48;i++)
E0[i] = L0[E_E0[i]-1]; //扩展成48位E0
for(i=0;i<32;i++) //L[i] = R[i-1]
L0[i] = R0[i];
int P0[33];
Map48_32(E0,P0,K); //48位E0 --> 32位P0
for(i=0;i<32;i++)
{
if(P0[i+1] == R0[i]) R0[i]=1;
else R0[i]=0; //P0与R0异或
}
}
void CDES_CryptionDlg::OnButtonEncryption()
{
// TODO: Add your control notification handler code here
UpdateData();
if(m_path.GetLength() >= 19)
{
AfxMessageBox("密匙长度大于19，无法加密!\n\t请重新输入 ...");
return ;
}
char *ch2;
int len,i;
unsigned __int64 sum = 0;
ch2 = m_path.GetBuffer(m_path.GetLength());
len = strlen(ch2);
for(i=0;i<len;i++)
sum = 10 * sum + ch2[i] - 48 ;
memset(PC,0,sizeof(PC));
dec2bin(PC,sum);
m_crypt.SetSel(0,-1);
m_crypt.Clear();
if(m_message.IsEmpty())
{
AfxMessageBox("原文是空的，无法加密!\n\t请输入 ...");
return ;
}
if(m_message.GetLength() >= 19)
{
AfxMessageBox("原文长度大于19，无法加密!\n\t请重新输入 ...");
return ;
}
int X[lMes+1] ,X0[lMes+1] ; //明文X和置换后的明文X0-----------64位
int L0[lMes/2],R0[lMes/2];
int PC0[lKey+1]; //置换后的秘钥PC0----------56位
int th[16] = {1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
int PC2[16][49]={0};
int len1 = strlen(m_message);
char ch0[lMax];
memcpy(ch0,m_message,len1);
sum =0;
for(i=0;i<len1;i++)
sum = 10 * sum + ch0[i] - 48;
memset(X,0,sizeof(X));
dec2bin(X,sum);
for(i=1;i<=lMes;i++)
X0[i] = X [ X_X0[i] ] ;
for(i=0;i<lMes;i++)
{
if(i<lMes/2) L0[i] = X0[i+1]; //明文前32位L0
else R0[i-lMes/2] = X0[i+1]; //明文后32位R0
}
///////////////////////////////////////////////////////////////---------读取一段64位二进制秘钥
for(i=1;i<=lKey;i++)
PC0[i] = PC[ PC_PC0[i] ];
int C0[lKey/2],D0[lKey/2];
for(i=1;i<=lKey;i++)
{
if(i<lKey/2) C0[i] =PC0[i]; //秘钥前28位C0
else D0[i-lKey/2]=PC0[i]; //秘钥后28位D0
}
int j,k;
for(int ix=0;ix<16;ix++) //得到16个子秘钥PC2
{
LeftMove(C0,th[i]);
LeftMove(D0,th[i]); //分别循环左移th[i]个
//重新合并成56位PC0
for(j=1;j<=lKey/2;j++)
PC0[j] = C0[j-1];
for(k=1;k<=lKey/2;k++,j++)
PC0[j]=D0[k-1];
for(j=1;j<=48;j++)
PC2[ix][j] = PC0[ PC2_PC0[j] ]; //再次置换压缩得到48位子秘钥PC2
}
////////////////////////////////////////////////////////////////-----------进行16轮加密
for(int iy=0;iy<16;iy++)
{
F(L0,R0,PC2[ix]);
}
int C[65],last_C0[65];
j=1;
for(i=0;i<32;i++,j++)
C[j] =R0[i];
for(i=0;i<32;i++,j++)
C[j] = L0[i];
for(i=1;i<=64;i++) //逆置换IP-1
last_C0[i] = C[C_C0[i]];
unsigned __int64 x;
sum = 0;
x = 1;
for(i=64;i>=2;i--)
{
sum += last_C0[i] * x;
x *= 2;
}
CString dec;
dec.Format("%I64d",sum);
char last_cryption[65];
for(i=0;i<64;i++)
{
last_cryption[i] = last_C0[i+1] + 48 ;
}
last_cryption[64] = '\0';
CString str;
str.Format("二进制：%s",last_cryption);
str += "\r\n十进制:\r\n";
str += dec;
int nlength = m_crypt.GetWindowTextLength();
m_crypt.GetSel(nlength,nlength);
m_crypt.ReplaceSel(str);
UpdateData(FALSE);
}
void CDES_CryptionDlg::OnButtonExit()
{
// TODO: Add your control notification handler code here
OnOK();
}
void CDES_CryptionDlg::dec2bin(int PC[65], unsigned __int64 sum)
{
int i = 64;
while(sum > 0)
{
PC[i] = int(sum % 2);
sum /= 2;
i--;
}
}
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