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📁 一个加密解密算法大小：2.80 KB (2,868 字节)
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// ecfileDlg.cpp : implementation file    
//    
   
#include "stdafx.h"    
#include "ecfile.h"    
#include "ecfileDlg.h"    
   
#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()   
   
/////////////////////////////////////////////////////////////////////////////    
// CEcfileDlg dialog    
   
CEcfileDlg::CEcfileDlg(CWnd* pParent /*=NULL*/)   
    : CDialog(CEcfileDlg::IDD, pParent)   
{   
    //{{AFX_DATA_INIT(CEcfileDlg)    
    m_path = _T("");   
    m_pass = _T("");   
    //}}AFX_DATA_INIT    
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32    
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);   
}   
   
void CEcfileDlg::DoDataExchange(CDataExchange* pDX)   
{   
    CDialog::DoDataExchange(pDX);   
    //{{AFX_DATA_MAP(CEcfileDlg)    
    DDX_Text(pDX, IDC_PASSWORD, m_path);   
    DDX_Text(pDX, IDC_PASS1, m_pass);   
    //}}AFX_DATA_MAP    
}   
   
BEGIN_MESSAGE_MAP(CEcfileDlg, CDialog)   
    //{{AFX_MSG_MAP(CEcfileDlg)    
    ON_WM_SYSCOMMAND()   
    ON_WM_PAINT()   
    ON_WM_QUERYDRAGICON()   
    ON_BN_CLICKED(IDC_E, OnE)   
    ON_BN_CLICKED(IDC_D, OnD)   
    ON_BN_CLICKED(IDC_BROW, OnBrow)   
    //}}AFX_MSG_MAP    
END_MESSAGE_MAP()   
   
BOOL CEcfileDlg::OnInitDialog()   
{   
    CDialog::OnInitDialog();   
   
    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);   
        }   
    }   
   
    SetIcon(m_hIcon, TRUE);   
    SetIcon(m_hIcon, FALSE);   
   
    return TRUE;   
}   
   
void CEcfileDlg::OnSysCommand(UINT nID, LPARAM lParam)   
{   
    if ((nID & 0xFFF0) == IDM_ABOUTBOX)   
    {   
        CAboutDlg dlgAbout;   
        dlgAbout.DoModal();   
    }   
    else   
    {   
        CDialog::OnSysCommand(nID, lParam);   
    }   
}   
   
void CEcfileDlg::OnPaint()    
{   
    CDialog::OnPaint();   
}   
   
HCURSOR CEcfileDlg::OnQueryDragIcon()   
{   
    return (HCURSOR) m_hIcon;   
}   
   
void CEcfileDlg::OnE()    
{   
    UpdateData(TRUE);   
    if(m_path == "")   
    {   
        AfxMessageBox("怎么没有选择要加密的文件就开始加密啊?");   
        return;   
    }   
   
    UpdateData(TRUE);   
    if(m_pass == "")   
    {   
        AfxMessageBox("没有写上密码");   
        return;   
    }   
   
   
    if(ecfile(m_path))   
    {   
        MessageBox("加密成功了已经");   
    }   
    else   
    {   
        MessageBox("没加密成功");   
    }   
}   
   
void CEcfileDlg::OnD()    
{   
    UpdateData(TRUE);   
    if(m_path == "")   
    {   
        AfxMessageBox("怎么没有选择要加密的文件就开始解密啊?");   
        return;   
    }   
   
    UpdateData(TRUE);   
    if(m_pass == "")   
    {   
        AfxMessageBox("没有写上密码");   
        return;   
    }   
   
    if(dcfile(m_path))   
    {   
        MessageBox("解密成功了");   
    }   
    else   
    {   
        MessageBox("解密失败了");   
    }   
}   
   
void CEcfileDlg::OnBrow()    
{   
    CFileDialog dlg(TRUE);   
    if(dlg.DoModal() == IDOK)   
    {   
        m_path = dlg.GetPathName();   
        UpdateData(FALSE);   
    }   
    else   
    {   
        return;   
    }   
}   
   
   
//给文件加密的函数    
BOOL CEcfileDlg::ecfile(LPCTSTR fpath)   
{   
    char *data;   
    CFile *file;   
    DWORD flen;   
   
    m_password = epass();   
   
    file = new CFile;   
    if ( !file->Open(fpath, CFile::shareDenyNone|CFile::modeReadWrite))   
    {   
        return FALSE;   
    }   
   
    flen = file->GetLength();   
    data = new char[(int)flen];   
   
    file->SeekToBegin();   
    file->Read(data, flen);   
   
    for(int i=0; i<(int)flen; i++)   
    {   
        data[i] ^= m_password;   
        data[i] ^= flen;   
    }   
   
    file->SeekToBegin();   
    file->Write(data, flen);   
    delete[] data;   
   
    //添加密码验证信息    
    char cpass[5] = "love";   
    for(int j=0; j<5; j++)   
    {   
        cpass[j] ^= m_password;   
    }   
    file->SeekToEnd();   
    file->Write(&cpass, 5);   
    file->Close();   
    delete file;   
   
    return TRUE;   
}   
   
   
//给文件解密的函数    
BOOL CEcfileDlg::dcfile(LPCTSTR fpath)   
{   
    char *data;   
    CFile *file;   
    DWORD flen;   
    char love[5];   
   
    file = new CFile;   
    if( !file->Open(fpath, CFile::shareDenyNone|CFile::modeReadWrite))   
    {   
        return FALSE;   
    }   
   
    flen = file->GetLength();   
    data = new char[(int)flen];   
   
    //检验密码是不是正确    
    file->Seek(-5, CFile::end);   
    file->Read(&love, 5);   
   
    m_password = epass();   
   
    for(int i=0; i<5; i++)   
    {   
        love[i] ^= m_password;   
    }   
   
    if(strcmp(love, "love")!=0)   
    {   
        return FALSE;   
    }   
   
    //解密    
    file->SeekToBegin();   
    file->Read(data, flen);   
   
    for(int j=0; j<(int)flen; j++)   
    {   
        data[j] ^= m_password;   
        data[j] ^= (flen-5);   
    }   
    file->SeekToBegin();   
    file->Write(data, flen);   
    file->SetLength(flen-5);   
    file->Close();   
   
    delete[] data;   
    delete file;   
    return TRUE;   
}   
   
   
//获得密码的函数    
__int64 CEcfileDlg::epass()   
{   
    DWORD plen;   
    char *ppass;   
    __int64 mc= 8757735233305;   
    UpdateData(TRUE);   
   
    ppass = m_pass.GetBuffer(0);   
   
    plen = strlen(ppass);   
   
    for(int i=0; i<(int)plen; i++)   
    {   
        mc ^= ppass[i]|128;   
    }   
    return mc;   
}  

// ecfileDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "ecfile.h" 
#include "ecfileDlg.h" 
 
#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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CEcfileDlg dialog 
 
CEcfileDlg::CEcfileDlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CEcfileDlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CEcfileDlg) 
	m_path = _T(""); 
	m_pass = _T(""); 
	//}}AFX_DATA_INIT 
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 
} 
 
void CEcfileDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CEcfileDlg) 
	DDX_Text(pDX, IDC_PASSWORD, m_path); 
	DDX_Text(pDX, IDC_PASS1, m_pass); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CEcfileDlg, CDialog) 
	//{{AFX_MSG_MAP(CEcfileDlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_E, OnE) 
	ON_BN_CLICKED(IDC_D, OnD) 
	ON_BN_CLICKED(IDC_BROW, OnBrow) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
BOOL CEcfileDlg::OnInitDialog() 
{ 
	CDialog::OnInitDialog(); 
 
	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); 
		} 
	} 
 
	SetIcon(m_hIcon, TRUE); 
	SetIcon(m_hIcon, FALSE); 
 
	return TRUE; 
} 
 
void CEcfileDlg::OnSysCommand(UINT nID, LPARAM lParam) 
{ 
	if ((nID & 0xFFF0) == IDM_ABOUTBOX) 
	{ 
		CAboutDlg dlgAbout; 
		dlgAbout.DoModal(); 
	} 
	else 
	{ 
		CDialog::OnSysCommand(nID, lParam); 
	} 
} 
 
void CEcfileDlg::OnPaint()  
{ 
	CDialog::OnPaint(); 
} 
 
HCURSOR CEcfileDlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
void CEcfileDlg::OnE()  
{ 
	UpdateData(TRUE); 
	if(m_path == "") 
	{ 
		AfxMessageBox("怎么没有选择要加密的文件就开始加密啊?"); 
		return; 
	} 
 
	UpdateData(TRUE); 
	if(m_pass == "") 
	{ 
		AfxMessageBox("没有写上密码"); 
		return; 
	} 
 
 
	if(ecfile(m_path)) 
	{ 
		MessageBox("加密成功了已经"); 
	} 
	else 
	{ 
		MessageBox("没加密成功"); 
	} 
} 
 
void CEcfileDlg::OnD()  
{ 
	UpdateData(TRUE); 
	if(m_path == "") 
	{ 
		AfxMessageBox("怎么没有选择要加密的文件就开始解密啊?"); 
		return; 
	} 
 
	UpdateData(TRUE); 
	if(m_pass == "") 
	{ 
		AfxMessageBox("没有写上密码"); 
		return; 
	} 
 
	if(dcfile(m_path)) 
	{ 
		MessageBox("解密成功了"); 
	} 
	else 
	{ 
		MessageBox("解密失败了"); 
	} 
} 
 
void CEcfileDlg::OnBrow()  
{ 
	CFileDialog dlg(TRUE); 
	if(dlg.DoModal() == IDOK) 
	{ 
		m_path = dlg.GetPathName(); 
		UpdateData(FALSE); 
	} 
	else 
	{ 
		return; 
	} 
} 
 
 
//给文件加密的函数 
BOOL CEcfileDlg::ecfile(LPCTSTR fpath) 
{ 
	char *data; 
	CFile *file; 
	DWORD flen; 
 
	m_password = epass(); 
 
	file = new CFile; 
	if ( !file->Open(fpath, CFile::shareDenyNone|CFile::modeReadWrite)) 
	{ 
		return FALSE; 
	} 
 
	flen = file->GetLength(); 
	data = new char[(int)flen]; 
 
	file->SeekToBegin(); 
	file->Read(data, flen); 
 
	for(int i=0; i<(int)flen; i++) 
	{ 
		data[i] ^= m_password; 
		data[i] ^= flen; 
	} 
 
	file->SeekToBegin(); 
	file->Write(data, flen); 
	delete[] data; 
 
	//添加密码验证信息 
	char cpass[5] = "love"; 
	for(int j=0; j<5; j++) 
	{ 
		cpass[j] ^= m_password; 
	} 
	file->SeekToEnd(); 
	file->Write(&cpass, 5); 
	file->Close(); 
	delete file; 
 
	return TRUE; 
} 
 
 
//给文件解密的函数 
BOOL CEcfileDlg::dcfile(LPCTSTR fpath) 
{ 
	char *data; 
	CFile *file; 
	DWORD flen; 
	char love[5]; 
 
	file = new CFile; 
	if( !file->Open(fpath, CFile::shareDenyNone|CFile::modeReadWrite)) 
	{ 
		return FALSE; 
	} 
 
	flen = file->GetLength(); 
	data = new char[(int)flen]; 
 
	//检验密码是不是正确 
	file->Seek(-5, CFile::end); 
	file->Read(&love, 5); 
 
	m_password = epass(); 
 
	for(int i=0; i<5; i++) 
	{ 
		love[i] ^= m_password; 
	} 
 
	if(strcmp(love, "love")!=0) 
	{ 
		return FALSE; 
	} 
 
	//解密 
	file->SeekToBegin(); 
	file->Read(data, flen); 
 
	for(int j=0; j<(int)flen; j++) 
	{ 
		data[j] ^= m_password; 
		data[j] ^= (flen-5); 
	} 
	file->SeekToBegin(); 
	file->Write(data, flen); 
	file->SetLength(flen-5); 
	file->Close(); 
 
	delete[] data; 
	delete file; 
	return TRUE; 
} 
 
 
//获得密码的函数 
__int64 CEcfileDlg::epass() 
{ 
	DWORD plen; 
	char *ppass; 
	__int64 mc= 8757735233305; 
	UpdateData(TRUE); 
 
	ppass = m_pass.GetBuffer(0); 
 
	plen = strlen(ppass); 
 
	for(int i=0; i<(int)plen; i++) 
	{ 
		mc ^= ppass[i]|128; 
	} 
	return mc; 
}
💿 文件大小 4 K
👤 上传用户 ilovexzhu
📂 所属分类加密解密
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