mydes.h

Visual C++ 实现DES算法

#if !defined(AFX_MYDES_H__DC768C75_3141_4B10_8944_7FFA7ABB0779__INCLUDED_)
#define AFX_MYDES_H__DC768C75_3141_4B10_8944_7FFA7ABB0779__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// MyDes.h : header file

#include "Matrix.h"
typedef BYTE   KEYBYTE[6];
enum DESMODE{dmEncry, dmDecry};
/////////////////////////////////////////////////////////////////////////////
// MyDes command target

class CMyDes : public CCmdTarget
{
	DECLARE_DYNCREATE(CMyDes)
// Attributes
public:
	CMyDes();           // protected constructor used by dynamic creation

	virtual ~CMyDes();
// Operations
public:
	CString EncryStrHex(CString Str, CString Key);
	CString DecryStrHex(CString StrHex, CString Key);

	KEYBYTE subKey[16];
	CString sKeyText;
	CString sCipherText;
	CString sPlainText;
// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(MyDes)
	//}}AFX_VIRTUAL

// Implementation
protected:
	CString ByteToStr(BYTE inData[],int iLength);
	CString BitToStr(BYTE inData);
	BYTE HexToByte(CString inHex);
	CString ByteToHex(BYTE inByte);
	CString EncryStr(CString Str,CString Key);
	void desData(DESMODE desMode, BYTE inData[], BYTE outData[]);
	void conversePermutation(BYTE inData[]);
	void permutation(BYTE inData[]);
	BYTE si(BYTE s, BYTE inByte);
	void expand(BYTE inData[],BYTE outData[]);
	void encry(BYTE inData[],BYTE subKey[],BYTE outData[]);
	void initPermutation(BYTE inData[]);
	void cycleMove(BYTE inData[],BYTE bitMove);
	CString DecryStr(CString Str,CString Key);

	// Generated message map functions
	//{{AFX_MSG(MyDes)
		// NOTE - the ClassWizard will add and remove member functions here.
	//}}AFX_MSG

	DECLARE_MESSAGE_MAP()
private:
	void permutationChoose1(BYTE inData[],BYTE outData[]);
	void permutationChoose2(BYTE inData[],BYTE outData[]);
	void makeKey(BYTE inkey[],KEYBYTE outkey[]);
};

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

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_MYDES_H__DC768C75_3141_4B10_8944_7FFA7ABB0779__INCLUDED_)