求大神把C++DES用java实现

[髅在何方]

代码如下

#include <iostream>
#include <afx.h>
#include <tchar.h> 
#include <ctime>
#include<winsock.h>
unsigned char posmstkey[9]={0x12,0x23,0x35,0x56,0x55,0x33,0x98,0x11};
char starC[56],starD[56],starK[17][48];
void DES(unsigned char *key,unsigned char *text,unsigned char *mtext);
void starexpand0(unsigned char *in,char *out);
void setkeystar(char bits[64]);
void starcompress0(char *out,unsigned char *in);
void starencrypt0(unsigned char *text,unsigned char *mtext);
void starip(unsigned char *text,char *ll,char *rr);
void _starip(char *text,char *ll,char *rr);
void starson(char *cc,char *dd,char *kk);
void starF(int n,char *ll,char *rr,char *LL,char *RR);
void stars_box(char *aa,char *bb);
int asctobcd(unsigned char *bcd, char *asc, int len);
void bcdtoasc(unsigned char *asc, unsigned char *bcd, int len);
int starpc_1_c[28]={
	56,48,40,32,24,16,8
	,0,57,49,41,33,25,17
	,9,1,58,50,42,34,26
	,18,10,2,59,51,43,35};
	

int starpc_1_d[28]={
	62,54,46,38,30,22,14
	,6,61,53,45,37,29,21
	,13,5,60,52,44,36,28
	,20,12,4,27,19,11,3};
	
int starls_count[16]={
	1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};

int starip_tab[64]={
	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};
	
int _starip_tab[64]={
	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};
	
int stare_r[48]={
	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,
	24,25,26,27,28,29,28,29,30,31,32,1};

int starP[32]={
	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};
	
char bit_box[16][4]={
    {0,0,0,0},
    {0,0,0,1},
    {0,0,1,0},
    {0,0,1,1},
    {0,1,0,0},
    {0,1,0,1},
    {0,1,1,0},
    {0,1,1,1},
    {1,0,0,0},
    {1,0,0,1},
    {1,0,1,0},
    {1,0,1,1},
    {1,1,0,0},
    {1,1,0,1},
    {1,1,1,0},
    {1,1,1,1}};

int starSSS[16][4][16]={
	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,

	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,

	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,

	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,

	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,

	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,

	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,

	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};
	
int starpc_2[48]={
	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};

void DES(unsigned char *key,unsigned char *text,unsigned char *mtext)
{
	char tmp[64];
	union {
	unsigned char buff1[8];
	unsigned long i[2];
	}a;

	starexpand0(key,tmp);
	setkeystar(tmp);
	starcompress0( tmp , a.buff1);
	starencrypt0(text,mtext);
}
void starexpand0(unsigned char *in,char *out)
{
	int i,j;

	for (i=0;i<8;i++) {
		for (j=7;j>=0;j--) {
			*out++=(in[i]>>j)&1;
		}
	}
}
void setkeystar(char bits[64])
{
	int i,j;
	for (i=0;i<28;i++) {
		starC[i]=starC[i+28]=bits[starpc_1_c[i]];
		starD[i]=starD[i+28]=bits[starpc_1_d[i]];
	}
	for (i=0,j=0;j<16;j++) {
	    	i+=starls_count[j];
		starson(starC+i,starD+i,starK[j+1]);
	}
}
void starcompress0(char *out,unsigned char *in)
{
	int i,j;

	for (i=0;i<8;i++) {
		for (in[i]=0,j=7;j>=0;j--)
			in[i]+=(*out++)<<j;
	}
}
void starencrypt0(unsigned char *text,unsigned char *mtext)
{
	char ll[64],rr[64],LL[64],RR[64];
	char tmp[64];
	int i;
	starip(text,ll,rr);

	for (i=1;i<17;i++) {
		starF(i,ll,rr,LL,RR);
		starF(++i,LL,RR,ll,rr);
	}
	_starip(tmp,rr,ll);
	starcompress0(tmp,mtext);
}
void starip(unsigned char *text,char *ll,char *rr)
{
	int i;
	char buffer[64];
	starexpand0(text,buffer);

	for (i=0;i<32;i++) {
		ll[i]=buffer[starip_tab[i]-1];
		rr[i]=buffer[starip_tab[i+32]-1];
	}
}
void _starip(char *text,char *ll,char *rr)
{
	int i;
	char tmp[64];
	memcpy(tmp,ll,32);
	memcpy(tmp+32,rr,32);
	for (i=0;i<64;i++)
		text[i]=tmp[_starip_tab[i]-1];
}

void starson(char *cc,char *dd,char *kk)
{
	int i;
	char buffer[56];
	memcpy(buffer,cc,28);
	memcpy(buffer+28,dd,28);
	for (i=0;i<48;i++)
		*kk++=buffer[starpc_2[i]-1];
}

void starF(int n,char *ll,char *rr,char *LL,char *RR)
{
	int i;
	char buffer[64],tmp[64];
	for (i=0;i<48;i++)
		buffer[i]=rr[stare_r[i]-1]^starK[n][i];

	stars_box(buffer,tmp);

	for (i=0;i<32;i++)
		RR[i]=tmp[starP[i]-1]^ll[i];

	memcpy(LL,rr,32);
}
void stars_box(char *aa,char *bb)
{
	int i,j,m,y,z;
	for (i=0,m=0,j=0;i<8;i++,j+=6) {
		y=(aa[j]<<1)+aa[j+5];
		z=(aa[j+1]<<3)+(aa[j+2]<<2)+(aa[j+3]<<1)+aa[j+4];
		memcpy(bb+m,bit_box[ starSSS[i][y][z] ],4);
		m+=4;
	}
}
int asctobcd(unsigned char *bcd, char *asc, int len)
{
char	*p;
int	i, j;

	p = (char *) malloc( (len+1) * sizeof(char) );

	for(i = 0; i < len; i++) {
		if( (asc[i] >= '0') && (asc[i] <= '9') )
			p[i] = asc[i] - '0';
		else if( (asc[i] >= 'a') && (asc[i] <= 'f') )
			p[i] = asc[i] - 'a' + 10;
		else if( (asc[i] >= 'A') && (asc[i] <= 'F') )
			p[i] = asc[i] - 'A' + 10;

		else { 
			free(p); 
			return(-1);
		}
	}

	j = (len + len%2) / 2;
	if( len%2 ) p[len+1] = 0;

	for (i=0; i<j; i++) {
		bcd[i] = (p[2*i] & 0x0f)<<4;
		bcd[i] |= (p[2*i+1] & 0x0f);
	}

	free(p);
	system("pause");
	return(0);
}
void bcdtoasc(unsigned char *asc, unsigned char *bcd, int len)
{
int	i, j;

	j = (len + len%2) / 2;
	for(i=0; i<j; i++) {
		asc[2*i] = (bcd[i] >> 4) & 0x0f;
		asc[2*i+1] = bcd[i] & 0x0f; 
	}	
	for(i=0; i<len; i++) {
		if( asc[i] > 0x09)
			asc[i] = 'A' + asc[i] - 0x0a;
		else	asc[i] += '0';
	}
	
	asc[len] = 0;
}
void DESK( char * text,unsigned char mtext[17])
{
	unsigned char posmackey[9],mackey_mw[9];
	asctobcd(posmackey,text,16);
	DES(posmstkey,posmackey,mackey_mw);
	bcdtoasc(mtext,mackey_mw,16);
}
void main()
{
	unsigned char tmp_mw[17];
	DESK("2222222222222222",tmp_mw);
	printf("%s\n",tmp_mw);
}