📄 des3dlg.cpp
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// DES3Dlg.cpp : implementation file
//
#include "stdafx.h"
#include "DES3.h"
#include "DES3Dlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
void CDES3Dlg::chartobit(char a[],int b[],int n)
{
int i,k,c,j=0;
for(i=0;i<n;i++)
{
c=int(a[i]);
if(c<0) c+=256;
for(k=7;k>=0;k--)
{
b[j++]=(c>>k)%2;
}
}
}
void CDES3Dlg::bittochar(char a[],int b[], int n)
{
int i,j,k;
for(i=0; i<n; i++)
{
k=0;
for(j=0;j<8;j++)
k+=(b[8*i+j]<<(7-(j%8)));
a[i]=(char)k;
}
a[i]='\0';
}
void CDES3Dlg::lrotate(int a[], int n)
{
int i;
int temp[65];
for(i=0;i<n;i++)
temp[i]=a[i];
for(i=0;i<28-n;i++)
a[i]=a[i+n];
for(i=0;i<n;i++)
a[28+i-n]=temp[i];
}
void CDES3Dlg::pc1tran(int c[],int d[],int k[])
{
int i;
int temp[65];
for(i=0;i<56;i++)
temp[i]=k[pc1[i]-1];
for(i=0;i<28;i++)
{
c[i]=temp[i];
d[i]=temp[i+28];
}
}
void CDES3Dlg::pc2tran(int subkey[],int k[])
{
int i;
for(i=0;i<48;i++)
{
subkey[i]=k[pc2[i]-1];
}
}
void CDES3Dlg::createkey(int k[])
{
int i,j,flag=0;
int c[29],d[29],temp[57];
T=0;
pc1tran(c,d,k);
for(i=0;i<28;i++)
{
temp[i]=c[i];
temp[i+28]=d[i];
}
for(i=0;i<56;)
{
if(temp[i]==0)
i++;
else break;
}
if(i==56) T=1;
if(T==0)
{
for(i=0;i<28;)
{
if(temp[i]==0&&temp[i+28]==1)
i++;
else break;
}
if(i==28) T=1;
}
if(T==0)
{
for(i=0;i<28;)
{
if(temp[i]==1&&temp[i+28]==0)
i++;
else break;
}
if(i==28) T=1;
}
if(T==0)
{
for(i=0;i<56;)
{
if(temp[i]==1)
i++;
else break;
}
if(i==56) T=1;
}
for(i=0;i<16;i++)
{
lrotate(c,ls[i]);
lrotate(d,ls[i]);
for(j=0;j<28;j++)
{
k[j]=c[j];
k[j+28]=d[j];
}
pc2tran(subkey[i],k);
}
}
void CDES3Dlg::iptran(int l[],int r[],int m[])
{
int i;
int temp[65];
for(i=0;i<64;i++)
{
temp[i]=m[ip[i]-1];
}
for(i=0;i<32;i++)
{
l[i]=temp[i];
r[i]=temp[i+32];
}
}
void CDES3Dlg::etran(int m[],int r[])
{
int i;
for(i=0;i<48;i++)
m[i]=r[e[i]-1];
}
void CDES3Dlg::xor(int m[],int sub[],int n)
{
int i;
for(i=0;i<n;i++)
{
if(m[i]==sub[i])
m[i]=0;
else m[i]=1;
}
}
void CDES3Dlg::change(int temp[],int j)
{
int i=0;
for(i=0;i<4;i++)
{
temp[i]=(j>>(3-i))&1;
}
}
void CDES3Dlg::stran(int m[],int temp[])
{
int i,j,k,t;
for(i=0;i<8;i++,m+=6,temp+=4)
{
j=(m[0]<<1)+m[5];
k=(m[1]<<3)+(m[2]<<2)+(m[3]<<1)+m[4];
t=s[i][j][k];
change(temp,t);
}
}
void CDES3Dlg::ptran(int r[],int temp[])
{
int i;
for(i=0;i<32;i++)
r[i]=temp[p[i]-1];
}
void CDES3Dlg::ip1tran(int m[],int temp[])
{
int i;
for(i=0;i<64;i++)
m[i]=temp[ip1[i]-1];
}
void CDES3Dlg::encrypt(int in[],int out[],int n)
{
int i,j,k;
int temp[65],tmp[33],m[49];
int l[33],r[33];
k=64*n;
for(i=0;i<64;i++)
temp[i]=in[ip[i]-1+k];
for(i=0;i<32;i++)
{
l[i]=temp[i];
r[i]=temp[32+i];
}
for(i=0;i<16;i++)
{
for(j=0;j<32;j++)
tmp[j]=r[j];
etran(m,r);
xor(m,subkey[i],48);
stran(m,temp);
ptran(r,temp);
xor(r,l,32);
for(j=0;j<32;j++)
l[j]=tmp[j];
}
for(i=0;i<32;i++)
{
temp[i]=r[i];
temp[i+32]=l[i];
}
for(i=0;i<64;i++)
out[i+k]=temp[ip1[i]-1];
}
void CDES3Dlg::decrypt(int in[],int out[],int n)
{
int i,j,k;
int miw[49],temp[65],tmp[33],l[33],r[33];
k=64*n;
for(i=0;i<64;i++)
temp[i]=in[ip[i]-1+k];
for(i=0;i<32;i++)
{
l[i]=temp[i];
r[i]=temp[i+32];
}
for(i=15;i>=0;i--)
{
for(j=0;j<32;j++)
tmp[j]=r[j];
etran(miw,r);
xor(miw,subkey[i],48);
stran(miw,temp);
ptran(r,temp);
xor(r,l,32);
for(j=0;j<32;j++)
l[j]=tmp[j];
}
for(i=0;i<32;i++)
{
temp[i]=r[i];
temp[i+32]=l[i];
}
for(i=0;i<64;i++)
out[k+i]=temp[ip1[i]-1];
}
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
CString m_help;
//}}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)
virtual BOOL OnInitDialog();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
m_help = _T("");
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
DDX_Text(pDX, IDC_EDIT1, m_help);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDES3Dlg dialog
CDES3Dlg::CDES3Dlg(CWnd* pParent /*=NULL*/)
: CDialog(CDES3Dlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDES3Dlg)
m_t = _T("");
m_ming = _T("");
m_mi = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CDES3Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDES3Dlg)
DDX_Control(pDX, IDC_EDIT7, m_ruo);
DDX_Control(pDX, IDC_EDIT4, m_code);
DDX_Control(pDX, IDC_EDIT1, m_key);
DDX_Text(pDX, IDC_EDIT5, m_t);
DDX_Text(pDX, IDC_EDIT2, m_ming);
DDX_Text(pDX, IDC_EDIT3, m_mi);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDES3Dlg, CDialog)
//{{AFX_MSG_MAP(CDES3Dlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, Onencrypt)
ON_BN_CLICKED(IDC_BUTTON2, Ondecrypt)
ON_BN_CLICKED(IDC_BUTTON3, Onclrscr)
ON_BN_CLICKED(IDC_BUTTON4, Ontest)
ON_BN_CLICKED(IDC_BUTTON5, Onhelp)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDES3Dlg message handlers
BOOL CDES3Dlg::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
m_t="请输入8bytes的密钥字符和少于2000bytes的明文字符！";
UpdateData(false);
return TRUE; // return TRUE unless you set the focus to a control
}
void CDES3Dlg::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 CDES3Dlg::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 CDES3Dlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CDES3Dlg::Onencrypt()
{
// TODO: Add your control notification handler code here
int i,k,num,t,r,flag=0;
int temp[64],tmp[64];
char key[10];
char tip1[]="加密成功！";
char tip2[]="加密失败！密钥字符数不为8，请重新输入密钥！";
int *m,*code;
char *ming,*mw;
UpdateData(true);
m_key.GetWindowText(key,10);
k=strlen(key);
if(k!=0){
if(k==8){
chartobit(key,temp,8);
createkey(temp);
num=strlen(m_ming);
if(num!=0){
if(num>=8)
{
ming=(char *)malloc(num*(sizeof(char)));
for(i=0;i<num;i++)
ming[i]=m_ming[i];
t=num/8;
r=num%8;
m=(int *)malloc(8*num*(sizeof(int)));
chartobit(ming,m,num);
code=(int *)malloc(8*num*(sizeof(int)));
for(i=0;i<t;i++)
encrypt(m,code,i);
if(r!=0)
{
for(i=0;i<8*(8-r);i++)
temp[i]=code[8*(num-8)+i];
for(i=8*(8-r);i<64;i++)
temp[i]=m[8*(num-8)+i];
encrypt(temp,tmp,0);
for(i=0;i<64;i++)
code[i+8*(num-8)]=tmp[i];
}
mw=(char *)malloc(8*num*(sizeof(char)));
for(i=0;i<8*num;i++)
mw[i]=(char)(code[i]+48);
mw[8*num]='\0';
m_mi.Format(mw);
m_t.Format(tip1);
}
else if(num>0)
{
ming=(char *)malloc(65*(sizeof(char)));
for(i=0;i<num;i++)
ming[i]=m_ming[i];
for(i=0;i<8-num;i++)
ming[i+num]=' ';
m=(int *)malloc(65*sizeof(int));
chartobit(ming,m,8);
code=(int *)malloc(65*sizeof(int));
encrypt(m,code,0);
mw=(char *)malloc(65*sizeof(char));
for(i=0;i<64;i++)
mw[i]=(char)(code[i]+48);
mw[64]='\0';
m_mi.Format(mw);
m_t.Format(tip1);
}}
}else m_t.Format(tip2);}
UpdateData(false);
}
void CDES3Dlg::Ondecrypt()
{
// TODO: Add your control notification handler code here
int i,j,k,num,t,r,flag=0;
int temp[64],tmp[64];
char key[9];
char tip1[]="解密成功！";
char tip2[]="解密失败！密钥字符数不为8，请重新输入密钥！";
char tip3[]="解密失败，密文01序列字符数小于64或者不是8的倍数，请重新输入密文(>=64bytes且为8的倍数)！";
char tip4[]="解密失败，输入的密文序列不是01序列，请重新输入密文！";
int *code,*mi;
char *mw,*c;
UpdateData(true);
m_key.GetWindowText(key,9);
j=strlen(key);
if(j!=0){
if(j==8){
chartobit(key,temp,8);
createkey(temp);
k=strlen(m_mi);
if(k!=0){
for(i=0;i<k;i++)
{
if(m_mi[i]!='0'&&m_mi[i]!='1')
{
flag=1;
break;
}
}
if(flag!=1){
num=k/8;
if(!(k%8)&&k>=64)
{
mw=(char *)malloc(k*sizeof(char));
for(i=0;i<k;i++)
mw[i]=m_mi[i];
t=num/8;
r=num%8;
mi=(int *)malloc(k*(sizeof(int)));
for(i=0;i<k;i++)
mi[i]=(int)(mw[i]-48);
if(r!=0)
{
for(i=0;i<64;i++)
temp[i]=mi[8*(num-8)+i];
decrypt(temp,tmp,0);
for(i=0;i<8*(8-r);i++)
mi[8*(num-8)+i]=tmp[i];
}
code=(int *)malloc(k*sizeof(int));
for(i=0;i<t;i++)
decrypt(mi,code,i);
for(i=0;i<8*r;i++)
code[64*t+i]=tmp[8*(8-r)+i];
c=(char *)malloc(k*(sizeof(char)));
bittochar(c,code,num);
m_code.SetWindowText(c);
m_t.Format(tip1);
}else m_t.Format(tip3);
}else m_t.Format(tip4); }
}else m_t.Format(tip2);}
UpdateData(false);
}
void CDES3Dlg::Onclrscr()
{
// TODO: Add your control notification handler code here
int i,n;
char *c;
UpdateData(true);
n=strlen(m_mi);
c=(char *)malloc(n*sizeof(char));
for(i=0;i<n;i++)
c[i]=' ';
c[i]='\0';
m_key.SetWindowText(c);
m_ming.Format(c);
m_mi.Format(c);
m_code.SetWindowText(c);
m_ruo.SetWindowText(c);
m_t="请您输入密钥字符（8bytes）和明文字符！";
UpdateData(false);
}
void CDES3Dlg::Ontest()
{
// TODO: Add your control notification handler code here
char tip1[]="弱密钥，不安全，请您重新输入密钥！";
char tip2[]="非弱密钥，请您放心使用！";
char tip3[]="密钥字符个数不为8，请重新输入密钥！";
int k,temp[65];
char key[10];
m_key.GetWindowText(key,10);
k=strlen(key);
if(k==8)
{
chartobit(key,temp,8);
createkey(temp);
if(T==1)
m_ruo.SetWindowText(tip1);
else m_ruo.SetWindowText(tip2);
}
else m_ruo.SetWindowText(tip3);
}
void CDES3Dlg::Onhelp()
{
// TODO: Add your control notification handler code here
CAboutDlg aaa;
aaa.DoModal();
}
BOOL CAboutDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// TODO: Add extra initialization here
m_help="软件运行说明：\r\n\r\n1、功能说明：\r\n 此软件能够对各种字符进行加密，其加密结果\
为01序列，并且可以直接解密由单重DES加密产生的密文01序列；此外，本软件还附加了检验密钥是否安全，\
清屏功能和软件运行相关的帮助功能;\r\n\r\n2、操作说明：\r\n 加密时，请输入8bytes的字符密钥（数字，汉字或者字符）\
和字符明文，验证加密结果时直接点击解密按钮\n\r就可得到相应的明文；\r\n 单独解密时，请在密钥\
框输入8bytes的字符密钥并且在密文框输入由单重DES加密产生的密文01序列，点击解密按纽即可得到对应的\
明文！\r\n\r\n3、问题反馈：如果您在使用中有任何问题请发邮件至aaron_up9999@126.com，作者将长期负\
责维护和改进！";
UpdateData(false);
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
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