?? desdlg.cpp
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// DESDlg.cpp : implementation file
//
#include "stdafx.h"
#include "DES.h"
#include "DESDlg.h"
#include <stdio.h>
#include <string.h>
#include <windows.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/**********此處定義DES的置換表、DES的S盒、以及DES密鑰的使用(置換選擇表)***********/
/**********定義DES的置換表********/
//初使轉(zhuǎn)換(Initial Permutation IP)
DWORDLONG dwlData_IP[65]={
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,
63,55,47,39,31,23,15,7,0};
//逆初始轉(zhuǎn)換(Inverse Initial Permutation IP-1)
DWORDLONG dwlData_FP[65]={
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,
33,1,41,9,49,17,57,25,0};
//擴充置換(Expansion Permutation(E))
DWORDLONG dwlData_Expansion[64]={
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,
28,29,30,31,32,1,0};
//置換函數(shù)(Permutation Function (P))
DWORDLONG dwlData_P[33]={
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, 4,25,0};
/*******DES密鑰的使用)*********/
//選擇置換1 (PC-1)
DWORDLONG subKey_PC_1[64]={
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,
21,13,5,28,20,12,4,0};
//選擇置換2 (PC-2)
DWORDLONG subKey_PC_2[57]={
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,
34,53,46,42,50,36,29,32,0};
/******DES的S盒的定義 (Definition of DES S-Boxes)******/
DWORDLONG OS[512]={
/*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()
/////////////////////////////////////////////////////////////////////////////
// CDESDlg dialog
CDESDlg::CDESDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDESDlg::IDD, pParent)
{ m_subKey=0;
m_dwlData=0;
for(int i=0;i<16;i++)
{
step[i]=2;
mask[i]=0xc000000; //0xc000000為十六進制數(shù),相當(dāng)于28位二進制數(shù):1100 0000 0000 0000 0000 0000 0000
}
step[0]=step[1]=step[8]=step[15]=1;
mask[0]=mask[1]=mask[8]=mask[15]=0x8000000; //0x8000000 相當(dāng)于(1000 0000 0000 0000 0000 0000 0000)
ConvertTableToMask(subKey_PC_1,64);
ConvertTableToMask(subKey_PC_2,56);
ConvertTableToMask(dwlData_IP,64);
ConvertTableToMask(dwlData_Expansion,32);
ConvertTableToMask(dwlData_FP,64);
ConvertTableToMask(dwlData_P,32);
Generate_S();
//{{AFX_DATA_INIT(CDESDlg)
m_strData = _T("");
m_strKey = _T("");
m_strOutput = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
//以下為各成員函數(shù)的實現(xiàn)
//密鑰產(chǎn)生
void CDESDlg::EncryptKey(char *key){
m_subKey=Char_to_Byte((unsigned char*)key,TRUE);
m_subKey=Permutation(m_subKey,subKey_PC_1,56);
Generate_K();
}
//子密鑰Ki的產(chǎn)生(注:ki作為函數(shù)F(Ri-1,Ki)的輸入)
void CDESDlg::Generate_K(void){
DWORDLONG C[17],D[17],tmp;
//由置換選擇1(PC-1)所得的56位密鑰(m_subKey)分為兩個28位數(shù)據(jù)C[0]和D[0]
C[0]=m_subKey>>28; //將m_subKey各二進制位右移28位,移到右端的低位舍去,高位補0,這樣就取得左端的28位數(shù)據(jù)賦給C[0]
D[0]=m_subKey&0xfffffff;//與0xfffffff按位與運算,取得m_subKey的右端(低)28位,其它位清零.
//以下為C[i-1]和D[i-1]每輪循環(huán)左移
for(int i=1;i<=16;i++){
tmp=(C[i-1]&mask[i-1])>>(28-step[i-1]); //tmp保存左移1位或2位時溢出左端的數(shù)據(jù)
C[i]=((C[i-1]<<step[i-1])|tmp)&0x0fffffff;
/*C[i-1]的其它不溢的位左移并與tmp按位或運算,使得溢出的數(shù)據(jù)補在C[i-1]右端,以實現(xiàn)循環(huán)左移*/
tmp=(D[i-1]&mask[i-1])>>(28-step[i-1]);
D[i]=((D[i-1]<<step[i-1])|tmp)&0x0fffffff;
m_dwl_K[i]=(C[i]<<28)|D[i]; //移位后的值為m_dwl_K[i]
m_dwl_K[i]=Permutation(m_dwl_K[i],subKey_PC_2,48);//m_dwl_K[i]作為置換選擇2(PC-2)輸入,產(chǎn)生48位子密鑰
}
}
//字符轉(zhuǎn)換函數(shù)：長度為8字節(jié)的(密鑰、明文、密文)轉(zhuǎn)換為64位二進制數(shù)
DWORDLONG CDESDlg::Char_to_Byte(unsigned char *key,BOOL shift){
unsigned char tmp;
DWORDLONG byte=0;
int i=0;
while(i<8)
{
while(*key){
if(byte!=0) byte<<=8;
tmp=*key; //每次循環(huán)把key中的1個字節(jié)(8位)賦給tmp
if(shift) tmp<<=1; //tmp的二進制數(shù)左移1位后再賦給tmp,
byte|=tmp; //tmp與byte按位或運算再賦給byte
i++;
key++;
}
if(i<8)
byte<<=8;
i++;
}
return byte;
}
//置換函數(shù)：可用來對中間數(shù)據(jù)或子密鑰的進行各種置換選擇
DWORDLONG CDESDlg::Permutation(DWORDLONG dwlPara,DWORDLONG* dwlTable,int Len){
int i=0;
DWORDLONG tmp=0,moveBit;
while(i<Len){
moveBit=1;
if(dwlTable[i]&dwlPara){
moveBit<<=Len-i-1;
tmp|=moveBit;
}
i++;
}
return tmp;
}
void CDESDlg::ConvertTableToMask(DWORDLONG *mask,int max){
int i=0;
DWORDLONG nBit=1;
while(mask[i]!=0){
nBit=1;
nBit<<=max-mask[i];
mask[i++]=nBit;
}
}
//S盒的產(chǎn)生
void CDESDlg::Generate_S(void){
int i;
int j,m,n;
m=n=0;
j=1;
for(i=0;i<512;i++)
{
Des_S[j][m][n]=OS[i];
n=(n+1)%16;
if(!n)
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