des.h

机顶盒加解密工作示例代码

// Des.h: interface for the CDes class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_DES_H__AFDBAE45_7D00_4451_97A3_97B82C98316E__INCLUDED_)
#define AFX_DES_H__AFDBAE45_7D00_4451_97A3_97B82C98316E__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
static const int PC_1[57]={57,49,41,33,25,17,9,
	              1,58,50,42,34,26,18,
	              10,2,59,51,43,35,27,
	              19,11,3,60,52,44,36,
	              63,55,47,39,31,23,15,
	              7,62,54,46,38,30,22,
	              14,6,61,53,45,37,29,
	              21,13,5,28,20,12,4};
static const int PC_2[49]={14,17,11,24,1,5,
                  3,28,15,6,21,10,
	              23,19,12,4,26,8,
	              16,7,27,20,13,2,
	              41,52,31,37,47,55,
	              30,40,51,45,33,48,
	              44,49,39,56,34,53,
	              46,42,50,36,29,32};
static const int IP[65]={58,50,42,34,26,18,10,2,
	          60,52,44,36,28,20,12,4,
	          62,54,46,38,30,22,14,6,
	          64,56,48,40,32,24,16,8,
	          57,49,41,33,25,17,9,1,
	          59,51,43,35,27,19,11,3,
	          61,53,45,37,29,21,13,5,
	          63,55,47,39,31,23,15,7};
static const	int IP_1[65]={40,8,48,16,56,24,64,32,
	              39,7,47,15,55,23,63,31,
	              38,6,46,14,54,22,62,30,
	              37,5,45,13,53,21,61,29,
	              36,4,44,12,52,20,60,28,
	              35,3,43,11,51,19,59,27,
	              34,2,42,10,50,18,58,26,
	              33,1,41,9,49,17,57,25};
static const int E[49]={32,1,2,3,4,5,
	           4,5,6,7,8,9,
	           8,9,10,11,12,13,
	           12,13,14,15,16,17,
	           16,17,18,19,20,21,
	           20,21,22,23,24,25,
	           24,25,26,27,28,29,
	           28,29,30,31,32,31};
static const	int sbox[8][4][16]={//s1
	               14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,
	               0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,
	               4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,
	               15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13,
				    //s2
				   15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,
	               3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,
	               0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,
	               13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9,
				   //s3
                  10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,
            	   13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,
	               13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,
	               1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12,
				   //s4
                  7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,
	               13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,
	               10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,
	               3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14,
				   //s5
				   2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,
	               14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,
	               4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,
	               11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3,
				   //s6
				   12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,
	               10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8,
    	           9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6,
	               4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13,
				   //s7
				   4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,
	               13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,
	               1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,
	               6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12,
				   //s8
                   13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,
	               1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2,
	               7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,
	               2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11
};
static const	int P[33]={16,7,20,21,
	           29,12,28,17,
	           1,15,23,26,
	           5,18,31,10,
	           2,8,24,14,
	           32,27,3,9,
	           19,13,30,6,
	           22,11,4,25};
class CDes : public CObject  
{
public:
	void changekey();
	int yushimiyaoerjinzhi[65];
	int yuanshishujuerjinzhi[65];
	CDes();
	virtual ~CDes();
   int	subkey();
	CString jiami();
private:
	int key16[17][49];

};

#endif // !defined(AFX_DES_H__AFDBAE45_7D00_4451_97A3_97B82C98316E__INCLUDED_)