// RSA ApplicationDlg.cpp : implementation file
//

extern "C"
{
#include "miracl.h"
#include "mirdef.h"
}

#pragma comment( lib, "ms32.lib" ) 


#include "stdafx.h"
#include "RSA Application.h"
#include "RSA ApplicationDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CRSAApplicationDlg dialog

CRSAApplicationDlg::CRSAApplicationDlg(CWnd* pParent /*=NULL*/)
: CDialog(CRSAApplicationDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRSAApplicationDlg)
	// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CRSAApplicationDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRSAApplicationDlg)
	DDX_Control(pDX, IDC_SN, m_sn);
	DDX_Control(pDX, IDC_NAME, m_name);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRSAApplicationDlg, CDialog)
//{{AFX_MSG_MAP(CRSAApplicationDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_ABOUT, OnAbout)
ON_BN_CLICKED(IDC_REG, OnReg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRSAApplicationDlg message handlers

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

void CRSAApplicationDlg::OnAbout() 
{
	// TODO: Add your control notification handler code here
	
	CAboutDlg dlg;
	dlg.DoModal ();
	
}

void CRSAApplicationDlg::OnReg() 
{
	// TODO: Add your control notification handler code here

/*	RSA Application 1.0 版
 *	版權(quán)所有 (C) 2004 趙春生
 *	2004.04.25
 *	http://timw.yeah.net
 *	http://timw.126.com
 *	本程序調(diào)用Miracl ver 4.82大數(shù)運(yùn)算庫(kù)，詳見其附帶手冊(cè)。
 */

//////////////////////////////////////////////////////////////////////////

	//P(HEX)=E34436F5F48A227B
	//Q(HEX)=A92FA24467C4E3E3
	//N(HEX)=963251DC5A9C90D9F203A03C363BA411
	//D(HEX)=56157D29A89D77BF2F669A8F0B123CC9
	//E(HEX)=10001
	//Keysize(Bits)=128
	
	UpdateData(TRUE);
	
	miracl *mip=mirsys(100,0);
	mip->IOBASE=16;	//16進(jìn)制模式
	
	//定義并初始化變量
	big m=mirvar(0);	//m 放明文：注冊(cè)碼SN
	big c=mirvar(0);	//c 放密文：用戶名Name
	big n=mirvar(0);	//n 模數(shù)
	big e=mirvar(0);	//e 公鑰
	TCHAR Name[256]={0};
	TCHAR SN[256]={0};
	TCHAR temp[256]={0};
	int len=0;
	int i,j;
	
	//獲取Name
	len=m_name.GetWindowTextLength ();
	m_name.GetWindowText (Name,len+1);
	
	//獲取SN
	len=m_sn.GetWindowTextLength ();
	m_sn.GetWindowText (SN,len+1);
	
	//檢查SN是否為16進(jìn)制
	for (i=0,j=0;i<len;i++)
	{
		if(isxdigit(SN[i])==0)
		{
			j=1;
			break;
		}
	}
	
	//如果輸入的SN為16進(jìn)制且長(zhǎng)度不為0
	if (j!=1&&len!=0)
	{
		
		cinstr(m,SN);									//初始化明文m
		cinstr(n,"963251DC5A9C90D9F203A03C363BA411");	//初始化模數(shù)n	 
		cinstr(e,"10001");								//初始化公鑰e
		
		//當(dāng)m<n時(shí)
		if(compare(m,n)==-1)
		{
			powmod(m,e,n,c);//計(jì)算c=m^e mod n
			big_to_bytes(256,c,temp,FALSE);//將c轉(zhuǎn)換成數(shù)組寫入temp
	
			//釋放內(nèi)存
			mirkill(m);
			mirkill(c);
			mirkill(n);
			mirkill(e);
			mirexit();
		}
		else
			j=1;
		
	}
	
	
	//對(duì)Name、temp， m、n， SN的長(zhǎng)度進(jìn)行檢查
	if(lstrcmp(Name,temp)!=0||j==1||len==0)
		MessageBox("Please check your NAME and SN, then try again.","RSA Application");
	else
		MessageBox("Congratulate!!!","Registration complete!");
	
	UpdateData(FALSE);
	
}