求大神把C++DES用java实现

髅在何方 2015-06-17 05:03:35
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);
}
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