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小弟最近要用一个DES算法，有VC++代码，但小弟只会VB，那位大哥帮忙转一下或是把这个算法生成DLL库，以下是代码
// Des.cpp: implementation of the CDes class.
#include "stdafx.h"
#include "Des.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
uchar res_codage[8];
uchar res_decodage[8];
static unsigned char Key[64];
static unsigned char input[64], /* data input */
output[64]; /* data output */
static unsigned char Kn[16][48];
static unsigned char T1[] = {
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,
56,48,40,32,24,16, 8, 0,
58,50,42,34,26,18,10, 2,
60,52,44,36,28,20,12, 4,
62,54,46,38,30,22,14, 6
};
static unsigned char T2[] = {
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,
32, 0,40, 8,48,16,56,24
};
static unsigned char T3[] = {
31, 0, 1, 2, 3, 4,
3, 4, 5, 6, 7, 8,
7, 8, 9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31, 0
};
static unsigned char T5[] = {
15, 6,19,20,
28,11,27,16,
0,14,22,25,
4,17,30, 9,
1, 7,23,13,
31,26, 2, 8,
18,12,29, 5,
21,10, 3,24
};
static unsigned char T7_1_2[56] =
{
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,
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
};
static unsigned char T8[] =
{
0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0
};
static unsigned char T9[] =
{
13,16,10,23, 0, 4,
2,27,14, 5,20, 9,
22,18,11, 3,25, 7,
15, 6,26,19,12, 1,
40,51,30,36,46,54,
29,39,50,44,32,47,
43,48,38,55,33,52,
45,41,49,35,28,31
};
static unsigned char T6[][64] =
{
/* 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 unsigned char TE[][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}
};
void xor(uchar *a,uchar *b,int lg)
{
for (;lg–;) *a++ ^= *b++;
}
static void Ks(uchar *Key, uchar Kn[16][48])
{
uchar cd[56];
uchar zt[60] ;
int n;
unsigned char tmp11, tmp12, tmp21, tmp22;
int i;
unsigned char *Knn;
/* choix 1 */
for (i = 0; i < 56; i++)
{
cd[i] = Key[T7_1_2[i]];
}
for (n = 0; n < 16; n++)
{
if (T8[n] == 0)
{
tmp11 = cd[0];
tmp21 = cd[28];
memcpy( zt , &cd[1] , 55 );
memcpy( cd , zt , 55 );
cd[27] = tmp11;
cd[55] = tmp21;
}
else
{
tmp11 = cd[0];
tmp12 = cd[1];
tmp21= cd[28];
tmp22 = cd[29];
memcpy( zt , &cd[2] , 54 );
memcpy( cd , zt , 54 );
cd[26] = tmp11;
cd[27] = tmp12;
cd[54] = tmp21;
cd[55] = tmp22;
}
Knn = Kn[n];
for (i = 0; i < 48; i++)
{
Knn[i] = cd[T9[i]];
}
}
}
static void fonction(uchar *Knn, uchar *r, uchar *s)
{
unsigned char x[32];
unsigned long *px;
int i, l;
unsigned char c;
unsigned char t;
for (i = 0, l = 0, px = (unsigned long *) x; i < 8;)
{
c = 32 * (r[T3[l]] ^ Knn[l]);
l++;
c += 8 * (r[T3[l]] ^ Knn[l]);
l++;
c += 4 * (r[T3[l]] ^ Knn[l]);
l++;
c += 2 * (r[T3[l]] ^ Knn[l]);
l++;
c += 1 * (r[T3[l]] ^ Knn[l]);
l++;
c += 16 * (r[T3[l]] ^ Knn[l]);
l++;
t = T6[i][c];
i++;
*px = *(long *)TE[t];
px++;
}
for (i = 0; i < 32; i++)
{
s[i] = x[T5[i]];
}
}
static void permutation(uchar *org, uchar *tab)
{
unsigned char tmp[64];
int i;
memcpy(tmp, org, 64);
for (i = 0; i < 64; i++)
{
org[i] = tmp[tab[i]];
}
}
static void chiffrement(uchar *xi, uchar *xo, unsigned char Kn[16][48])
{
unsigned char r[32], l[32];
unsigned char rp[32], lp[32];
int i;
int n;
memcpy(l, &xi[0], 32);
memcpy(r, &xi[32], 32);
for (n = 0; n < 16; n++)
{
memcpy(lp, r, 32);
fonction(Kn[n], r, rp);
for (i = 0; i < 32; i++)
{
r[i] =( ( l[i]) ^ (rp[i] ) ) ;
}
memcpy(l, lp, 32);
}
memcpy(&xo[0], r, 32);
memcpy(&xo[32], l, 32);
}
static void dechiffrement(uchar *xi, uchar *xo, unsigned char Kn[16][48])
{
unsigned char r[32], l[32], rp[32], lp[32];
int i;
int n;
memcpy(l, &xi[0], 32);
memcpy(r, &xi[32], 32);
for (n = 0; n < 16; n++)
{
memcpy(lp, r, 32);
fonction(Kn[15 - n], r, rp);
for (i = 0; i < 32; i++)
{
r[i] =( ( l[i] ) ^ ( rp[i] )) ;
}
memcpy(l, lp, 32);
}
memcpy(&xo[0], r, 32);
memcpy(&xo[32], l, 32);
}
static void eclater(uchar *buf_bit, uchar *byte)
{
int i;
unsigned char m;
for (i = 0; i < 8; i++)
{
for (m = 0×80; m != 0; )
{
if ((buf_bit[i] & m) != 0)
*byte = 1;
else
*byte = 0;
byte++;
m=m/2 ;
}
}
}
static void compacter(uchar *byte, uchar *buf_bit)
{
int i;
unsigned char m, n;
for (i = 0; i < 8; i++)
{
n = 0;
for (m = 0×80; m != 0; )
{
if (*byte++)
n = n | m;
m=m/2 ;
}
buf_bit[i] = n;
}
}
void des(uchar *binput, uchar *boutput, uchar *bkey)
{
eclater(binput, input);
eclater(bkey, Key);
Ks(Key, Kn);
permutation(input, T1);
chiffrement(input, output, Kn);
permutation(output, T2);
compacter(output, boutput);
}
void desm1(uchar *binput, uchar *boutput, uchar *bkey)
{
eclater(binput, input);
eclater(bkey, Key);
Ks(Key, Kn);
permutation(input, T1);
dechiffrement(input, output, Kn);
permutation(output, T2);
compacter(output, boutput);
}
static uint minin(uint a,uint b)
{
if (a>=b)
return(b);
else
return(a);
}
void doubleEncrypt(uchar *in, uchar *out, uchar *key)
{
des(in,out,key);
desm1(out,out,&key[8]);
des(out,out,key);
}
可以帮把这个算法生成dll吗？
然后我就可以调用，谢谢
我的帖子要沉到底了吗？各位大虾帮帮忙，小弟急用
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