dlls/rsaenh/implglue.c

   1 /*
   2  * dlls/rsaenh/implglue.c
   3  * Glueing the RSAENH specific code to the crypto library
   4  *
   5  * Copyright (c) 2004, 2005 Michael Jung
   6  *
   7  * based on code by Mike McCormack and David Hammerton
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23 #include "config.h"
  24
  25 #include "wine/port.h"
  26 #include "wine/library.h"
  27
  28 #include "windef.h"
  29 #include "wincrypt.h"
  30
  31 #include "implglue.h"
  32
  33 #include <stdio.h>
  34
  35 /* Function prototypes copied from dlls/advapi32/crypt_md4.c */
  36 VOID WINAPI MD4Init( MD4_CTX *ctx );
  37 VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
  38 VOID WINAPI MD4Final( MD4_CTX *ctx );
  39 /* Function prototypes copied from dlls/advapi32/crypt_md5.c */
  40 VOID WINAPI MD5Init( MD5_CTX *ctx );
  41 VOID WINAPI MD5Update( MD5_CTX *ctx, const unsigned char *buf, unsigned int len );
  42 VOID WINAPI MD5Final( MD5_CTX *ctx );
  43 /* Function prototypes copied from dlls/advapi32/crypt_sha.c */
  44 VOID WINAPI A_SHAInit(PSHA_CTX Context);
  45 VOID WINAPI A_SHAUpdate(PSHA_CTX Context, const unsigned char *Buffer, UINT BufferSize);
  46 VOID WINAPI A_SHAFinal(PSHA_CTX Context, PULONG Result);
  47 /* Function prototype copied from dlls/advapi32/crypt.c */
  48 BOOL WINAPI SystemFunction036(PVOID pbBuffer, ULONG dwLen);
  49
  50 BOOL init_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext)
  51 {
  52     switch (aiAlgid)
  53     {
  54         case CALG_MD2:
  55             md2_init(&pHashContext->md2);
  56             break;
  57
  58         case CALG_MD4:
  59             MD4Init(&pHashContext->md4);
  60             break;
  61
  62         case CALG_MD5:
  63             MD5Init(&pHashContext->md5);
  64             break;
  65
  66         case CALG_SHA:
  67             A_SHAInit(&pHashContext->sha);
  68             break;
  69     }
  70
  71     return TRUE;
  72 }
  73
  74 BOOL update_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext, CONST BYTE *pbData,
  75                       DWORD dwDataLen)
  76 {
  77     switch (aiAlgid)
  78     {
  79         case CALG_MD2:
  80             md2_process(&pHashContext->md2, pbData, dwDataLen);
  81             break;
  82
  83         case CALG_MD4:
  84             MD4Update(&pHashContext->md4, pbData, dwDataLen);
  85             break;
  86
  87         case CALG_MD5:
  88             MD5Update(&pHashContext->md5, pbData, dwDataLen);
  89             break;
  90
  91         case CALG_SHA:
  92             A_SHAUpdate(&pHashContext->sha, pbData, dwDataLen);
  93             break;
  94
  95         default:
  96             SetLastError(NTE_BAD_ALGID);
  97             return FALSE;
  98     }
  99
 100     return TRUE;
 101 }
 102
 103 BOOL finalize_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext, BYTE *pbHashValue)
 104 {
 105     switch (aiAlgid)
 106     {
 107         case CALG_MD2:
 108             md2_done(&pHashContext->md2, pbHashValue);
 109             break;
 110
 111         case CALG_MD4:
 112             MD4Final(&pHashContext->md4);
 113             memcpy(pbHashValue, pHashContext->md4.digest, 16);
 114             break;
 115
 116         case CALG_MD5:
 117             MD5Final(&pHashContext->md5);
 118             memcpy(pbHashValue, pHashContext->md5.digest, 16);
 119             break;
 120
 121         case CALG_SHA:
 122             A_SHAFinal(&pHashContext->sha, (PULONG)pbHashValue);
 123             break;
 124
 125         default:
 126             SetLastError(NTE_BAD_ALGID);
 127             return FALSE;
 128     }
 129
 130     return TRUE;
 131 }
 132
 133 BOOL duplicate_hash_impl(ALG_ID aiAlgid, CONST HASH_CONTEXT *pSrcHashContext,
 134                          HASH_CONTEXT *pDestHashContext)
 135 {
 136     memcpy(pDestHashContext, pSrcHashContext, sizeof(HASH_CONTEXT));
 137
 138     return TRUE;
 139 }
 140
 141 BOOL new_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen)
 142 {
 143     switch (aiAlgid)
 144     {
 145         case CALG_RSA_KEYX:
 146         case CALG_RSA_SIGN:
 147             if (rsa_make_key((int)dwKeyLen, 65537, &pKeyContext->rsa) != CRYPT_OK) {
 148                 SetLastError(NTE_FAIL);
 149                 return FALSE;
 150             }
 151             return TRUE;
 152     }
 153
 154     return TRUE;
 155 }
 156
 157 BOOL free_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext)
 158 {
 159     switch (aiAlgid)
 160     {
 161         case CALG_RSA_KEYX:
 162         case CALG_RSA_SIGN:
 163             rsa_free(&pKeyContext->rsa);
 164     }
 165
 166     return TRUE;
 167 }
 168
 169 BOOL setup_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
 170                     DWORD dwEffectiveKeyLen, DWORD dwSaltLen, BYTE *abKeyValue)
 171 {
 172     switch (aiAlgid)
 173     {
 174         case CALG_RC4:
 175             rc4_start(&pKeyContext->rc4);
 176             rc4_add_entropy(abKeyValue, dwKeyLen + dwSaltLen, &pKeyContext->rc4);
 177             rc4_ready(&pKeyContext->rc4);
 178             break;
 179
 180         case CALG_RC2:
 181             rc2_setup(abKeyValue, dwKeyLen + dwSaltLen, dwEffectiveKeyLen ?
 182                       dwEffectiveKeyLen : dwKeyLen << 3, 0, &pKeyContext->rc2);
 183             break;
 184
 185         case CALG_3DES:
 186             des3_setup(abKeyValue, 24, 0, &pKeyContext->des3);
 187             break;
 188
 189         case CALG_3DES_112:
 190             memcpy(abKeyValue+16, abKeyValue, 8);
 191             des3_setup(abKeyValue, 24, 0, &pKeyContext->des3);
 192             break;
 193
 194         case CALG_DES:
 195             des_setup(abKeyValue, 8, 0, &pKeyContext->des);
 196             break;
 197     }
 198
 199     return TRUE;
 200 }
 201
 202 BOOL duplicate_key_impl(ALG_ID aiAlgid, CONST KEY_CONTEXT *pSrcKeyContext,
 203                         KEY_CONTEXT *pDestKeyContext)
 204 {
 205     switch (aiAlgid)
 206     {
 207         case CALG_RC4:
 208         case CALG_RC2:
 209         case CALG_3DES:
 210         case CALG_3DES_112:
 211         case CALG_DES:
 212             memcpy(pDestKeyContext, pSrcKeyContext, sizeof(KEY_CONTEXT));
 213             break;
 214         case CALG_RSA_KEYX:
 215         case CALG_RSA_SIGN:
 216             pDestKeyContext->rsa.type = pSrcKeyContext->rsa.type;
 217             mp_init_copy(&pDestKeyContext->rsa.e, &pSrcKeyContext->rsa.e);
 218             mp_init_copy(&pDestKeyContext->rsa.d, &pSrcKeyContext->rsa.d);
 219             mp_init_copy(&pDestKeyContext->rsa.N, &pSrcKeyContext->rsa.N);
 220             mp_init_copy(&pDestKeyContext->rsa.p, &pSrcKeyContext->rsa.p);
 221             mp_init_copy(&pDestKeyContext->rsa.q, &pSrcKeyContext->rsa.q);
 222             mp_init_copy(&pDestKeyContext->rsa.qP, &pSrcKeyContext->rsa.qP);
 223             mp_init_copy(&pDestKeyContext->rsa.dP, &pSrcKeyContext->rsa.dP);
 224             mp_init_copy(&pDestKeyContext->rsa.dQ, &pSrcKeyContext->rsa.dQ);
 225             break;
 226
 227         default:
 228             SetLastError(NTE_BAD_ALGID);
 229             return FALSE;
 230     }
 231
 232     return TRUE;
 233 }
 234
 235 static inline void reverse_bytes(BYTE *pbData, DWORD dwLen) {
 236     BYTE swap;
 237     DWORD i;
 238
 239     for (i=0; i<dwLen/2; i++) {
 240         swap = pbData[i];
 241         pbData[i] = pbData[dwLen-i-1];
 242         pbData[dwLen-i-1] = swap;
 243     }
 244 }
 245
 246 BOOL encrypt_block_impl(ALG_ID aiAlgid, DWORD dwKeySpec, KEY_CONTEXT *pKeyContext, CONST BYTE *in, BYTE *out,
 247                         DWORD enc)
 248 {
 249     unsigned long inlen, outlen;
 250     BYTE *in_reversed = NULL;
 251
 252     switch (aiAlgid) {
 253         case CALG_RC2:
 254             if (enc) {
 255                 rc2_ecb_encrypt(in, out, &pKeyContext->rc2);
 256             } else {
 257                 rc2_ecb_decrypt(in, out, &pKeyContext->rc2);
 258             }
 259             break;
 260
 261         case CALG_3DES:
 262         case CALG_3DES_112:
 263             if (enc) {
 264                 des3_ecb_encrypt(in, out, &pKeyContext->des3);
 265             } else {
 266                 des3_ecb_decrypt(in, out, &pKeyContext->des3);
 267             }
 268             break;
 269
 270         case CALG_DES:
 271             if (enc) {
 272                 des_ecb_encrypt(in, out, &pKeyContext->des);
 273             } else {
 274                 des_ecb_decrypt(in, out, &pKeyContext->des);
 275             }
 276             break;
 277
 278         case CALG_RSA_KEYX:
 279         case CALG_RSA_SIGN:
 280             outlen = inlen = (mp_count_bits(&pKeyContext->rsa.N)+7)/8;
 281             if (enc) {
 282                 if (rsa_exptmod(in, inlen, out, &outlen, dwKeySpec, &pKeyContext->rsa) != CRYPT_OK) {
 283                     SetLastError(NTE_FAIL);
 284                     return FALSE;
 285                 }
 286                 reverse_bytes(out, outlen);
 287             } else {
 288                 in_reversed = HeapAlloc(GetProcessHeap(), 0, inlen);
 289                 if (!in_reversed) {
 290                     SetLastError(NTE_NO_MEMORY);
 291                     return FALSE;
 292                 }
 293                 memcpy(in_reversed, in, inlen);
 294                 reverse_bytes(in_reversed, inlen);
 295                 if (rsa_exptmod(in_reversed, inlen, out, &outlen, dwKeySpec, &pKeyContext->rsa) != CRYPT_OK) {
 296                     HeapFree(GetProcessHeap(), 0, in_reversed);
 297                     SetLastError(NTE_FAIL);
 298                     return FALSE;
 299                 }
 300                 HeapFree(GetProcessHeap(), 0, in_reversed);
 301             }
 302             break;
 303
 304         default:
 305             SetLastError(NTE_BAD_ALGID);
 306             return FALSE;
 307     }
 308
 309     return TRUE;
 310 }
 311
 312 BOOL encrypt_stream_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, BYTE *stream, DWORD dwLen)
 313 {
 314     switch (aiAlgid) {
 315         case CALG_RC4:
 316             rc4_read(stream, dwLen, &pKeyContext->rc4);
 317             break;
 318
 319         default:
 320             SetLastError(NTE_BAD_ALGID);
 321             return FALSE;
 322     }
 323
 324     return TRUE;
 325 }
 326
 327 BOOL gen_rand_impl(BYTE *pbBuffer, DWORD dwLen)
 328 {
 329     return SystemFunction036(pbBuffer, dwLen);
 330 }
 331
 332 BOOL export_public_key_impl(BYTE *pbDest, const KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,DWORD *pdwPubExp)
 333 {
 334     mp_to_unsigned_bin(&pKeyContext->rsa.N, pbDest);
 335     reverse_bytes(pbDest, dwKeyLen);
 336     *pdwPubExp = (DWORD)mp_get_int(&pKeyContext->rsa.e);
 337     return TRUE;
 338 }
 339
 340 BOOL import_public_key_impl(CONST BYTE *pbSrc, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
 341                             DWORD dwPubExp)
 342 {
 343     BYTE *pbTemp;
 344
 345     if (mp_init_multi(&pKeyContext->rsa.e, &pKeyContext->rsa.d, &pKeyContext->rsa.N,
 346                       &pKeyContext->rsa.dQ,&pKeyContext->rsa.dP,&pKeyContext->rsa.qP,
 347                       &pKeyContext->rsa.p, &pKeyContext->rsa.q, NULL) != MP_OKAY)
 348     {
 349         SetLastError(NTE_FAIL);
 350         return FALSE;
 351     }
 352
 353     pbTemp = HeapAlloc(GetProcessHeap(), 0, dwKeyLen);
 354     if (!pbTemp) return FALSE;
 355     memcpy(pbTemp, pbSrc, dwKeyLen);
 356
 357     pKeyContext->rsa.type = PK_PUBLIC;
 358     reverse_bytes(pbTemp, dwKeyLen);
 359     mp_read_unsigned_bin(&pKeyContext->rsa.N, pbTemp, dwKeyLen);
 360     HeapFree(GetProcessHeap(), 0, pbTemp);
 361     mp_set_int(&pKeyContext->rsa.e, dwPubExp);
 362
 363     return TRUE;
 364 }
 365
 366 BOOL export_private_key_impl(BYTE *pbDest, const KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
 367                              DWORD *pdwPubExp)
 368 {
 369     mp_to_unsigned_bin(&pKeyContext->rsa.N, pbDest);
 370     reverse_bytes(pbDest, dwKeyLen);
 371     pbDest += dwKeyLen;
 372     mp_to_unsigned_bin(&pKeyContext->rsa.p, pbDest);
 373     reverse_bytes(pbDest, (dwKeyLen+1)>>1);
 374     pbDest += (dwKeyLen+1)>>1;
 375     mp_to_unsigned_bin(&pKeyContext->rsa.q, pbDest);
 376     reverse_bytes(pbDest, (dwKeyLen+1)>>1);
 377     pbDest += (dwKeyLen+1)>>1;
 378     mp_to_unsigned_bin(&pKeyContext->rsa.dP, pbDest);
 379     reverse_bytes(pbDest, (dwKeyLen+1)>>1);
 380     pbDest += (dwKeyLen+1)>>1;
 381     mp_to_unsigned_bin(&pKeyContext->rsa.dQ, pbDest);
 382     reverse_bytes(pbDest, (dwKeyLen+1)>>1);
 383     pbDest += (dwKeyLen+1)>>1;
 384     mp_to_unsigned_bin(&pKeyContext->rsa.qP, pbDest);
 385     reverse_bytes(pbDest, (dwKeyLen+1)>>1);
 386     pbDest += (dwKeyLen+1)>>1;
 387     mp_to_unsigned_bin(&pKeyContext->rsa.d, pbDest);
 388     reverse_bytes(pbDest, dwKeyLen);
 389     *pdwPubExp = (DWORD)mp_get_int(&pKeyContext->rsa.e);
 390
 391     return TRUE;
 392 }
 393
 394 BOOL import_private_key_impl(CONST BYTE *pbSrc, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
 395                              DWORD dwPubExp)
 396 {
 397     BYTE *pbTemp, *pbBigNum;
 398
 399     if (mp_init_multi(&pKeyContext->rsa.e, &pKeyContext->rsa.d, &pKeyContext->rsa.N,
 400                       &pKeyContext->rsa.dQ,&pKeyContext->rsa.dP,&pKeyContext->rsa.qP,
 401                       &pKeyContext->rsa.p, &pKeyContext->rsa.q, NULL) != MP_OKAY)
 402     {
 403         SetLastError(NTE_FAIL);
 404         return FALSE;
 405     }
 406
 407     pbTemp = HeapAlloc(GetProcessHeap(), 0, 2*dwKeyLen+5*((dwKeyLen+1)>>1));
 408     if (!pbTemp) return FALSE;
 409     memcpy(pbTemp, pbSrc, 2*dwKeyLen+5*((dwKeyLen+1)>>1));
 410     pbBigNum = pbTemp;
 411
 412     pKeyContext->rsa.type = PK_PRIVATE;
 413     reverse_bytes(pbBigNum, dwKeyLen);
 414     mp_read_unsigned_bin(&pKeyContext->rsa.N, pbBigNum, dwKeyLen);
 415     pbBigNum += dwKeyLen;
 416     reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
 417     mp_read_unsigned_bin(&pKeyContext->rsa.p, pbBigNum, (dwKeyLen+1)>>1);
 418     pbBigNum += (dwKeyLen+1)>>1;
 419     reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
 420     mp_read_unsigned_bin(&pKeyContext->rsa.q, pbBigNum, (dwKeyLen+1)>>1);
 421     pbBigNum += (dwKeyLen+1)>>1;
 422     reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
 423     mp_read_unsigned_bin(&pKeyContext->rsa.dP, pbBigNum, (dwKeyLen+1)>>1);
 424     pbBigNum += (dwKeyLen+1)>>1;
 425     reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
 426     mp_read_unsigned_bin(&pKeyContext->rsa.dQ, pbBigNum, (dwKeyLen+1)>>1);
 427     pbBigNum += (dwKeyLen+1)>>1;
 428     reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
 429     mp_read_unsigned_bin(&pKeyContext->rsa.qP, pbBigNum, (dwKeyLen+1)>>1);
 430     pbBigNum += (dwKeyLen+1)>>1;
 431     reverse_bytes(pbBigNum, dwKeyLen);
 432     mp_read_unsigned_bin(&pKeyContext->rsa.d, pbBigNum, dwKeyLen);
 433     mp_set_int(&pKeyContext->rsa.e, dwPubExp);
 434
 435     HeapFree(GetProcessHeap(), 0, pbTemp);
 436     return TRUE;
 437 }