跪求高手帮忙编译一DLL..急

dboyggyy 2006-09-26 10:48:45
一段C++的加密解密程序,分别有三个文件dll.h,DES.cpp,CRC,c ,想编译成DLL文件在C#中调用
特跪求各高手帮忙

/* dll.h
==================================================================================*/
#include <windows.h>
#ifndef DLL

#if defined(__cplusplus)
extern "C"{
#endif

__declspec( dllexport ) WORD CalCRC(void *pData, int nDataLen);
__declspec( dllexport ) void dedes(char *block);
__declspec( dllexport ) int desdone();
__declspec( dllexport ) int desinit(int mode);
__declspec( dllexport ) int dessetkey(char *key);
__declspec( dllexport ) void endes(char * block);
__declspec( dllexport )void UnixTimeStr(long t,char *buf);
__declspec( dllexport )long UnixTime();

#if defined(__cplusplus)
}
#endif
#define DLL
#endif
/*============================================================================*/
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OOPhaisky 2006-09-26
太长了......
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dboyggyy 2006-09-26
/*crc.c
=======================================================================================*/
#include <windows.h>
#include <time.h>
#include "DLL.h"
__declspec( dllexport )WORD CalCRC(void *pData, int nDataLen)
{
WORD acc = 0;
int i;
unsigned char* Data = (unsigned char*) pData;

while(nDataLen--)
{
acc = acc ^ (*Data++ << 8);
for(i = 0; i++ < 8; )
if(acc & 0x8000)
acc = (acc << 1) ^ 0x1021;
else
acc <<= 1;
}

// Swap High and Low byte
i = ( (WORD) ( ((UCHAR)acc) << 8) ) | ((WORD)(acc >> 8));

return i;
}

__declspec( dllexport )long UnixTime()
{
time_t t;

t=time(NULL);
return (long)t;
}

__declspec( dllexport )void UnixTimeStr(long t,char *buf)
{
struct tm* h;
time_t m;

m=(time_t)t;
h=localtime(&m);
strftime(buf,80,"%Y%m%d",h);
}
/*====================================================================================*/
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lw1a2 2006-09-26
.
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dboyggyy 2006-09-26
/* Allocate space and initialize DES lookup arrays
* mode == 0: standard Data Encryption Algorithm
* mode == 1: DEA without initial and final permutations for speed
* mode == 2: DEA without permutations and with 128-byte key (completely
* independent subkeys for each round)
*/
__declspec( dllexport )int desinit(int mode)
{
if (sp != NULL)
{
/* Already initialized */
return 0;
}
desmode = mode;

if ((sp = (long (*)[64]) malloc(sizeof(long) * 8 * 64)) == NULL)
{
return -1;
}
spinit();
kn = (unsigned char (*)[8]) malloc(sizeof(char) * 8 * 16);
if (kn == NULL) {
free((char *) sp);
return -1;
}
if (mode == 1 || mode == 2) /* No permutations */
return 0;

iperm = (char (*)[16][8]) malloc(sizeof(char) * 16 * 16 * 8);
if (iperm == NULL)
{
free((char *) sp);
free((char *) kn);
return -1;
}
perminit(iperm, ip);

fperm = (char (*)[16][8]) malloc(sizeof(char) * 16 * 16 * 8);
if (fperm == NULL) {
free((char *) sp);
free((char *) kn);
free((char *) iperm);
return -1;
}
perminit(fperm, fp);
return 0;
}

#ifndef SNMPD
/* %%% DLB Some day we should call this when the agent can exit gracefully. */
/* Free up storage used by DES */
__declspec( dllexport )int desdone()
{
if (sp == NULL)
return -1; /* Already done */

free((char *) sp);
free((char *) kn);
if (iperm != NULL)
free((char *) iperm);
if (fperm != NULL)
free((char *) fperm);

sp = NULL;
iperm = NULL;
fperm = NULL;
kn = NULL;
return 0;
}

#endif /* SNMPD */

/* Set key (initialize key schedule array) */
// char *key; /* 64 bits (will use only 56) */
__declspec( dllexport )int dessetkey(char *key)
{
char pc1m[56]; /* place to modify pc1 into */
char pcr[56]; /* place to rotate pc1 into */
register int i, j, l;
int m;

/*
* In mode 2, the 128 bytes of subkey are set directly from the user's
* key, allowing him to use completely independent subkeys for each
* round. Note that the user MUST specify a full 128 bytes.
*
* I would like to think that this technique gives the NSA a real headache,
* but I'm not THAT naive.
*/
if (desmode == 2)
{
for (i = 0; i < 16; i++)
{
for (j = 0; j < 8; j++)
{
kn[i][j] = *key++;
}
}
return -1;
}
/* Clear key schedule */
for (i = 0; i < 16; i++)
{
for (j = 0; j < 8; j++)
{
kn[i][j] = 0;
}
}
for (j = 0; j < 56; j++)
{ /* convert pc1 to bits of key */
l = pc1[j] - 1; /* integer bit location */
m = l & 07; /* find bit */
pc1m[j] = (key[l >> 3] &/* find which key byte l is in */
bytebit[m]) /* and which bit of that byte */
? 1 : 0; /* and store 1-bit result */
}
for (i = 0; i < 16; i++)
{ /* key chunk for each iteration */
for (j = 0; j < 56; j++)/* rotate pc1 the right amount */
pcr[j] = pc1m[(l = j + totrot[i]) < (j < 28 ? 28 : 56) ? l : l - 28];
/* rotate left and right halves independently */
for (j = 0; j < 48; j++)
{ /* select bits individually */
/* check bit that goes to kn[j] */
if (pcr[pc2[j] - 1])
{
/* mask it in if it's there */
l = j % 6;
kn[i][j / 6] |= bytebit[l] >> 2;
}
}
}
return 0;
}

#ifdef LITTLE_ENDIAN
/* Byte swap a long */
static unsigned long byteswap( unsigned long x)
{
register char *cp, tmp;

cp = (char *) &x;
tmp = cp[3];
cp[3] = cp[0];
cp[0] = tmp;

tmp = cp[2];
cp[2] = cp[1];
cp[1] = tmp;

return x;
}

#endif /* LITTLE_ENDIAN */

/* In-place encryption of 64-bit block */
__declspec( dllexport )void endes(char * block)
{
register int i;
unsigned long work[2]; /* Working data storage */
long tmp;
// MessageBox(GetDesktopWindow(),"Hello","in EnDes",MB_OK);
// return 0;

permute(block, iperm, (char *) work); /* Initial Permutation */

#ifdef LITTLE_ENDIAN
work[0] = byteswap(work[0]);
work[1] = byteswap(work[1]);
#endif /* LITTLE_ENDIAN */

/* Do the 16 rounds */
for (i = 0; i < 16; i++)
round(i, work);

/* Left/right half swap */
tmp = work[0];
work[0] = work[1];
work[1] = tmp;

#ifdef LITTLE_ENDIAN
work[0] = byteswap(work[0]);
work[1] = byteswap(work[1]);
#endif /* LITTLE_ENDIAN */

permute((char *) work, fperm, block); /* Inverse initial
* permutation */
}

/* In-place decryption of 64-bit block */
__declspec( dllexport )void dedes(char *block)
{
register int i;
unsigned long work[2]; /* Working data storage */
long tmp;

permute(block, iperm, (char *) work); /* Initial permutation */

#ifdef LITTLE_ENDIAN
work[0] = byteswap(work[0]);
work[1] = byteswap(work[1]);
#endif /* LITTLE_ENDIAN */

/* Left/right half swap */
tmp = work[0];
work[0] = work[1];
work[1] = tmp;

/* Do the 16 rounds in reverse order */
for (i = 15; i >= 0; i--)
round(i, work);

#ifdef LITTLE_ENDIAN
work[0] = byteswap(work[0]);
work[1] = byteswap(work[1]);
#endif /* LITTLE_ENDIAN */

permute((char *) work, fperm, block); /* Inverse initial
* permutation */
}


#endif /* SECURE */
/*=====================================================================================*/
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dboyggyy 2006-09-26
/* Do one DES cipher round */
// int num; /* i.e. the num-th one */
// unsigned long *block;
static round(int num, unsigned long *block)
{
// long f();

/*
* The rounds are numbered from 0 to 15. On even rounds the right half is
* fed to f() and the result exclusive-ORs the left half; on odd rounds
* the reverse is done.
*/
if (num & 1)
{
block[1] ^= f(block[0], kn[num]);
}
else
{
block[0] ^= f(block[1], kn[num]);
}
}

/* Permute inblock with perm */
// char *inblock, *outblock; /* result into outblock,64 bits */
// char perm[16][16][8]; /* 2K bytes defining perm. */
static permute(char *inblock,char perm[16][16][8], char *outblock)
{
register int i, j;
register char *ib, *ob; /* ptr to input or output block */
register char *p, *q;

if (perm[0][0][0] == 0)
{
/* No permutation, just copy */
for (i = 8; i != 0; i--)
*outblock++ = *inblock++;
return 0;
}

/* Clear output block */
for (i = 8, ob = outblock; i != 0; i--)
*ob++ = 0;

ib = inblock;
for (j = 0; j < 16; j += 2, ib++)
{ /* for each input nibble */
ob = outblock;
p = perm[j][(*ib >> 4) & 017];
q = perm[j + 1][*ib & 017];
for (i = 8; i != 0; i--)
{ /* and each output byte */
*ob++ |= *p++ | *q++; /* OR the masks together */
}
}
return 0;
}

/* End of DES-defined tables */



/* initialize a perm array */
static perminit(
char perm[16][16][8], /* 64-bit, either init or final */
char p[64])
{
register int l, j, k;
int i, m;

/* Clear the permutation array */
for (i = 0; i < 16; i++)
{
for (j = 0; j < 16; j++)
{
for (k = 0; k < 8; k++)
{
perm[i][j][k] = 0;
}
}
}

for (i = 0; i < 16; i++) /* each input nibble position */
{
for (j = 0; j < 16; j++)/* each possible input nibble */
{
for (k = 0; k < 64; k++)
{ /* each output bit position */
l = p[k] - 1; /* where does this bit come from */
if ((l >> 2) != i) /* does it come from input posn? */
continue; /* if not, bit k is 0 */
if (!(j & nibblebit[l & 3]))
continue; /* any such bit in input? */
m = k & 07; /* which bit is this in the byte */
perm[i][j][k >> 3] |= bytebit[m];
}
}
}
}

/* Initialize the lookup table for the combined S and P boxes */
static int spinit()
{
char pbox[32];
int p, i, s, j, rowcol;
long val;

/*
* Compute pbox, the inverse of p32i. This is easier to work with
*/
for (p = 0; p < 32; p++)
{
for (i = 0; i < 32; i++)
{
if (p32i[i] - 1 == p)
{
pbox[p] = i;
break;
}
}
}
for (s = 0; s < 8; s++)
{ /* For each S-box */
for (i = 0; i < 64; i++)
{ /* For each possible input */
val = 0;
/*
* The row number is formed from the first and last bits; the
* column number is from the middle 4
*/
rowcol = (i & 32) | ((i & 1) ? 16 : 0) | ((i >> 1) & 0xf);
for (j = 0; j < 4; j++)
{ /* For each output bit */
if (si[s][rowcol] & (8 >> j))
{
val |= 1L << (31 - pbox[4 * s + j]);
}
}
sp[s][i] = val;
}
}
return 0;
}

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dboyggyy 2006-09-26
/*DES.cpp
===============================================================================*/
#include <malloc.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <time.H>
#include <io.h>
#include <sys\types.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include <windows.h>
#include "DLL.h"

#define SECURE 1
#define LITTLE_ENDIAN 1

#ifdef SECURE
/* Sofware DES functions
* written 12 Dec 1986 by Phil Karn, KA9Q; large sections adapted from
* the 1977 public-domain program by Jim Gillogly
*/

#ifdef LITTLE_ENDIAN
#endif /* LITTLE_ENDIAN */


/* Lookup tables initialized once only at startup by desinit() */
static long (*sp)[64]; /* Combined S and P boxes */
static char (*iperm)[16][8];/* Initial and final permutations */
static char (*fperm)[16][8];

/* 8 6-bit subkeys for each of 16 rounds, initialized by dessetkey() */
static unsigned char (*kn)[8];

/* bit 0 is left-most in byte */
static int bytebit[] =
{
0200, 0100, 040, 020, 010, 04, 02, 01
};

static int nibblebit[] =
{
010, 04, 02, 01
};
static int desmode;
/* Tables defined in the Data Encryption Standard documents */

/* initial permutation IP */
static char ip[] =
{
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
};

/* final permutation IP^-1 */
static char fp[] =
{
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
};

/* expansion operation matrix
* This is for reference only; it is unused in the code
* as the f() function performs it implicitly for speed
*/

#ifdef notdef
static char ei[] =
{
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
};

#endif /* notdef */

/* permuted choice table (key) */
static char pc1[] =
{
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
};

/* number left rotations of pc1 */
static char totrot[] =
{
1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28
};

/* permuted choice key (table) */
static char pc2[] =
{
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
};

/* The (in)famous S-boxes */
static char si[8][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
};

/* 32-bit permutation function P used on the output of the S-boxes */
static char p32i[] =
{
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
};

/* The nonlinear function f(r,k), the heart of DES */
// unsigned long r; /* 32 bits */
// unsigned char subkey[8]; /* 48-bit key for this round */
static long f(unsigned long r, unsigned char subkey[8])
{
register unsigned long rval, rt;

/*
* Run E(R) ^ K through the combined S & P boxes This code takes
* advantage of a convenient regularity in E, namely that each group of 6
* bits in E(R) feeding a single S-box is a contiguous segment of R.
*/
rt = (r >> 1) | ((r & 1) ? 0x80000000 : 0);
rval = 0;
rval |= sp[0][((rt >> 26) ^ *subkey++) & 0x3f];
rval |= sp[1][((rt >> 22) ^ *subkey++) & 0x3f];
rval |= sp[2][((rt >> 18) ^ *subkey++) & 0x3f];
rval |= sp[3][((rt >> 14) ^ *subkey++) & 0x3f];
rval |= sp[4][((rt >> 10) ^ *subkey++) & 0x3f];
rval |= sp[5][((rt >> 6) ^ *subkey++) & 0x3f];
rval |= sp[6][((rt >> 2) ^ *subkey++) & 0x3f];
rt = (r << 1) | ((r & 0x80000000) ? 1 : 0);
rval |= sp[7][(rt ^ *subkey) & 0x3f];

return rval;
}

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