watermarkdlg.cpp

opensll的加密操作

// watermarkDlg.cpp : implementation file
//

#include "stdafx.h"
#include "watermark.h"
#include "watermarkDlg.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#pragma	comment(lib, "libeay32")
#include <openssl/applink.c>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

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

/////////////////////////////////////////////////////////////////////////////
// CWatermarkDlg dialog

CWatermarkDlg::CWatermarkDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWatermarkDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWatermarkDlg)
	m_WaterMarkFile = _T("");
	m_WaterMarkInfo = _T("");
	m_MyKey = _T("");
	m_Result = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CWatermarkDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWatermarkDlg)
	DDX_Text(pDX, IDC_EDIT1, m_WaterMarkFile);
	DDX_Text(pDX, IDC_EDIT2, m_WaterMarkInfo);
	DDX_Text(pDX, IDC_EDIT3, m_MyKey);
	DDX_Text(pDX, IDC_EDIT4, m_Result);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWatermarkDlg, CDialog)
	//{{AFX_MSG_MAP(CWatermarkDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWatermarkDlg message handlers

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

void CWatermarkDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	CFileDialog m_FileOpenDialog(TRUE,NULL,NULL,OFN_HIDEREADONLY,"支持的所有文件(*.EXE;*.DLL;*.OCX)|*.EXE;*.DLL;*.OCX;|可执行程序(*.EXE)|*.EXE|动态链接库(*.DLL)|*.DLL|ActiveX控件(*.OCX)|*.OCX||");
	m_FileOpenDialog.DoModal();
   m_WaterMarkFile= m_FileOpenDialog.GetPathName();
	if(m_WaterMarkFile== "") 
		return;
    UpdateData(FALSE);
}

//DEL void CWatermarkDlg::OnButton2() 
//DEL {
//DEL 	// TODO: Add your control notification handler code here
//DEL 	UpdateData(TRUE);
//DEL }

void CWatermarkDlg::OnButton3() 
{
	// TODO: Add your control notification handler code here
	CFileDialog m_FileOpenDialog(TRUE,NULL,NULL,OFN_HIDEREADONLY,"支持的所有文件(*.*)|*.*");
	m_FileOpenDialog.DoModal();
   m_MyKey= m_FileOpenDialog.GetPathName();
	if(m_MyKey== "") 
		return;
    UpdateData(FALSE);
}


void CWatermarkDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
   int count;
    RSA *key;
	unsigned char *buffer;
	FILE *pubfd, *encfd;
	unsigned char *tmp;
	int pub_len;
	//////////////////
	   unsigned char symbol[129]={0};
	   unsigned  char endoffile[129]={0};
	   int cmp;
	    
	   encfd=fopen(m_WaterMarkFile,"rb+");
	    
       if(!encfd)
	   {
		    m_Result="打开文件失败!";
			UpdateData(FALSE);
		   return;
	   }
	  
	   fseek(encfd,-128L,2);
	   fread(endoffile,128,1,encfd);
	   cmp=strcmp((const char*)symbol,(const char*)endoffile);
	 if(cmp!=0)
	 {
		   
	    m_Result="文件已经加过水印!";
	    UpdateData(FALSE);
	    fclose(encfd);
	    return ;
	  }
	   
	  
	   /////
	   pubfd=fopen(m_MyKey,"rb");
	   if(!pubfd)
	   {
		   m_Result="打开密钥失败!";
		   UpdateData(FALSE);
		   fclose(encfd);
		   return;
	   }
	   if(NULL==(key=PEM_read_RSAPublicKey(pubfd,NULL,NULL,NULL)))
	   {
		   m_Result="读取密钥失败!";
		   UpdateData(FALSE);
		   fclose(encfd);
		   fclose(pubfd);
		   return ;
	   }
	   
 
	   
	   pub_len=RSA_size(key);
	  
	   tmp=(unsigned char *)malloc(pub_len);
  
	   if(tmp==NULL)
	   {
		    m_Result="分配空间失败!";
		   UpdateData(FALSE);
		   RSA_free(key);
		   fclose(encfd);
		   fclose(pubfd);
		   
		   return ;
	   }
	   count=m_WaterMarkInfo.GetLength();
	   buffer=(unsigned char*)m_WaterMarkInfo.GetBuffer(count);
       m_WaterMarkInfo.ReleaseBuffer();
	  
	   if(-1==(pub_len=RSA_public_encrypt(count,buffer,tmp,key,RSA_PKCS1_PADDING)))
	   {
		   m_Result="加密失败!";
		   UpdateData(FALSE);
		   RSA_free(key);
		   free(tmp);
		   fclose(encfd);
		   fclose(pubfd);
		  
		   return ;
	   }
	   
	   fseek(encfd,-128L,2);
	   if(128!=pub_len)
	   {   
		    m_Result="pub_len 不是128!";
		   UpdateData(FALSE);
		   fclose(encfd);
		   fclose(pubfd);
		 
		   free(tmp);
		   return ;
	   }
      fwrite(tmp,1,pub_len,encfd);
	
       if( ferror(encfd) )      
	   { 
		    m_Result="写水印失败!";
		   UpdateData(FALSE);
		   RSA_free(key);
		   free(tmp);
		   fclose(encfd);
		   fclose(pubfd);
	 
		   return ;
	   }
       RSA_free(key);
       free(tmp);
	   fclose(encfd);
	      fclose(pubfd);
		 
		 m_Result="添加水印成功!";
		   UpdateData(FALSE);
}

void CWatermarkDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here
    OnCancel();
}

//DEL int CWatermarkDlg::enc()
//DEL {
//DEL 
//DEL }