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winejoystick: Fix a crash on accessing a CFArray past its end due to an off-by-one...
[wine/multimedia.git] / dlls / crypt32 / msg.c
blob13f593496312db9993a6b3711be1e78d470468a9
1 /*
2 * Copyright 2007 Juan Lang
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include "config.h"
20 #include "wine/port.h"
21
22 #include <stdarg.h>
23 #define NONAMELESSUNION
24 #include "windef.h"
25 #include "winbase.h"
26 #include "wincrypt.h"
27 #include "snmp.h"
28
29 #include "wine/debug.h"
30 #include "wine/exception.h"
31 #include "crypt32_private.h"
32
33 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
34
35 /* Called when a message's ref count reaches zero. Free any message-specific
36 * data here.
37 */
38 typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
39
40 typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
41 DWORD dwIndex, void *pvData, DWORD *pcbData);
42
43 typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
44 DWORD cbData, BOOL fFinal);
45
46 typedef BOOL (*CryptMsgControlFunc)(HCRYPTMSG hCryptMsg, DWORD dwFlags,
47 DWORD dwCtrlType, const void *pvCtrlPara);
48
49 static BOOL CRYPT_DefaultMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
50 DWORD dwCtrlType, const void *pvCtrlPara)
51 {
52 TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
53 SetLastError(E_INVALIDARG);
54 return FALSE;
55 }
56
57 typedef enum _CryptMsgState {
58 MsgStateInit,
59 MsgStateUpdated,
60 MsgStateDataFinalized,
61 MsgStateFinalized
62 } CryptMsgState;
63
64 typedef struct _CryptMsgBase
65 {
66 LONG ref;
67 DWORD open_flags;
68 BOOL streamed;
69 CMSG_STREAM_INFO stream_info;
70 CryptMsgState state;
71 CryptMsgCloseFunc close;
72 CryptMsgUpdateFunc update;
73 CryptMsgGetParamFunc get_param;
74 CryptMsgControlFunc control;
75 } CryptMsgBase;
76
77 static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
78 PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
79 CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update,
80 CryptMsgControlFunc control)
81 {
82 msg->ref = 1;
83 msg->open_flags = dwFlags;
84 if (pStreamInfo)
85 {
86 msg->streamed = TRUE;
87 msg->stream_info = *pStreamInfo;
88 }
89 else
90 {
91 msg->streamed = FALSE;
92 memset(&msg->stream_info, 0, sizeof(msg->stream_info));
93 }
94 msg->close = close;
95 msg->get_param = get_param;
96 msg->update = update;
97 msg->control = control;
98 msg->state = MsgStateInit;
99 }
100
101 typedef struct _CDataEncodeMsg
102 {
103 CryptMsgBase base;
104 DWORD bare_content_len;
105 LPBYTE bare_content;
106 } CDataEncodeMsg;
107
108 static const BYTE empty_data_content[] = { 0x04,0x00 };
109
110 static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
111 {
112 CDataEncodeMsg *msg = hCryptMsg;
113
114 if (msg->bare_content != empty_data_content)
115 LocalFree(msg->bare_content);
116 }
117
118 static BOOL WINAPI CRYPT_EncodeContentLength(DWORD dwCertEncodingType,
119 LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
120 PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
121 {
122 DWORD dataLen = *(DWORD *)pvStructInfo;
123 DWORD lenBytes;
124 BOOL ret = TRUE;
125
126 /* Trick: report bytes needed based on total message length, even though
127 * the message isn't available yet. The caller will use the length
128 * reported here to encode its length.
129 */
130 CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
131 if (!pbEncoded)
132 *pcbEncoded = 1 + lenBytes + dataLen;
133 else
134 {
135 if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
136 pcbEncoded, 1 + lenBytes)))
137 {
138 if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
139 pbEncoded = *(BYTE **)pbEncoded;
140 *pbEncoded++ = ASN_OCTETSTRING;
141 CRYPT_EncodeLen(dataLen, pbEncoded,
142 &lenBytes);
143 }
144 }
145 return ret;
146 }
147
148 static BOOL CRYPT_EncodeDataContentInfoHeader(const CDataEncodeMsg *msg,
149 CRYPT_DATA_BLOB *header)
150 {
151 BOOL ret;
152
153 if (msg->base.streamed && msg->base.stream_info.cbContent == 0xffffffff)
154 {
155 static const BYTE headerValue[] = { 0x30,0x80,0x06,0x09,0x2a,0x86,0x48,
156 0x86,0xf7,0x0d,0x01,0x07,0x01,0xa0,0x80,0x24,0x80 };
157
158 header->pbData = LocalAlloc(0, sizeof(headerValue));
159 if (header->pbData)
160 {
161 header->cbData = sizeof(headerValue);
162 memcpy(header->pbData, headerValue, sizeof(headerValue));
163 ret = TRUE;
164 }
165 else
166 ret = FALSE;
167 }
168 else
169 {
170 struct AsnConstructedItem constructed = { 0,
171 &msg->base.stream_info.cbContent, CRYPT_EncodeContentLength };
172 struct AsnEncodeSequenceItem items[2] = {
173 { szOID_RSA_data, CRYPT_AsnEncodeOid, 0 },
174 { &constructed, CRYPT_AsnEncodeConstructed, 0 },
175 };
176
177 ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items,
178 sizeof(items) / sizeof(items[0]), CRYPT_ENCODE_ALLOC_FLAG, NULL,
179 (LPBYTE)&header->pbData, &header->cbData);
180 if (ret)
181 {
182 /* Trick: subtract the content length from the reported length,
183 * as the actual content hasn't come yet.
184 */
185 header->cbData -= msg->base.stream_info.cbContent;
186 }
187 }
188 return ret;
189 }
190
191 static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
192 DWORD cbData, BOOL fFinal)
193 {
194 CDataEncodeMsg *msg = hCryptMsg;
195 BOOL ret = FALSE;
196
197 if (msg->base.state == MsgStateFinalized)
198 SetLastError(CRYPT_E_MSG_ERROR);
199 else if (msg->base.streamed)
200 {
201 __TRY
202 {
203 if (msg->base.state != MsgStateUpdated)
204 {
205 CRYPT_DATA_BLOB header;
206
207 ret = CRYPT_EncodeDataContentInfoHeader(msg, &header);
208 if (ret)
209 {
210 ret = msg->base.stream_info.pfnStreamOutput(
211 msg->base.stream_info.pvArg, header.pbData, header.cbData,
212 FALSE);
213 LocalFree(header.pbData);
214 }
215 }
216 /* Curiously, every indefinite-length streamed update appears to
217 * get its own tag and length, regardless of fFinal.
218 */
219 if (msg->base.stream_info.cbContent == 0xffffffff)
220 {
221 BYTE *header;
222 DWORD headerLen;
223
224 ret = CRYPT_EncodeContentLength(X509_ASN_ENCODING, NULL,
225 &cbData, CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&header,
226 &headerLen);
227 if (ret)
228 {
229 ret = msg->base.stream_info.pfnStreamOutput(
230 msg->base.stream_info.pvArg, header, headerLen,
231 FALSE);
232 LocalFree(header);
233 }
234 }
235 if (!fFinal)
236 {
237 ret = msg->base.stream_info.pfnStreamOutput(
238 msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
239 FALSE);
240 msg->base.state = MsgStateUpdated;
241 }
242 else
243 {
244 msg->base.state = MsgStateFinalized;
245 if (msg->base.stream_info.cbContent == 0xffffffff)
246 {
247 BYTE indefinite_trailer[6] = { 0 };
248
249 ret = msg->base.stream_info.pfnStreamOutput(
250 msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
251 FALSE);
252 if (ret)
253 ret = msg->base.stream_info.pfnStreamOutput(
254 msg->base.stream_info.pvArg, indefinite_trailer,
255 sizeof(indefinite_trailer), TRUE);
256 }
257 else
258 ret = msg->base.stream_info.pfnStreamOutput(
259 msg->base.stream_info.pvArg, (BYTE *)pbData, cbData, TRUE);
260 }
261 }
262 __EXCEPT_PAGE_FAULT
263 {
264 SetLastError(STATUS_ACCESS_VIOLATION);
265 ret = FALSE;
266 }
267 __ENDTRY;
268 }
269 else
270 {
271 if (!fFinal)
272 {
273 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
274 SetLastError(E_INVALIDARG);
275 else
276 SetLastError(CRYPT_E_MSG_ERROR);
277 }
278 else
279 {
280 CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
281
282 msg->base.state = MsgStateFinalized;
283 /* non-streamed data messages don't allow non-final updates,
284 * don't bother checking whether data already exist, they can't.
285 */
286 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
287 &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
288 &msg->bare_content_len);
289 }
290 }
291 return ret;
292 }
293
294 static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const void *src,
295 DWORD len)
296 {
297 BOOL ret = TRUE;
298
299 if (!pvData)
300 *pcbData = len;
301 else if (*pcbData < len)
302 {
303 *pcbData = len;
304 SetLastError(ERROR_MORE_DATA);
305 ret = FALSE;
306 }
307 else
308 {
309 *pcbData = len;
310 memcpy(pvData, src, len);
311 }
312 return ret;
313 }
314
315 static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
316 DWORD dwIndex, void *pvData, DWORD *pcbData)
317 {
318 CDataEncodeMsg *msg = hCryptMsg;
319 BOOL ret = FALSE;
320
321 switch (dwParamType)
322 {
323 case CMSG_CONTENT_PARAM:
324 if (msg->base.streamed)
325 SetLastError(E_INVALIDARG);
326 else
327 {
328 CRYPT_CONTENT_INFO info;
329 char rsa_data[] = "1.2.840.113549.1.7.1";
330
331 info.pszObjId = rsa_data;
332 info.Content.cbData = msg->bare_content_len;
333 info.Content.pbData = msg->bare_content;
334 ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
335 pvData, pcbData);
336 }
337 break;
338 case CMSG_BARE_CONTENT_PARAM:
339 if (msg->base.streamed)
340 SetLastError(E_INVALIDARG);
341 else
342 ret = CRYPT_CopyParam(pvData, pcbData, msg->bare_content,
343 msg->bare_content_len);
344 break;
345 default:
346 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
347 }
348 return ret;
349 }
350
351 static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
352 LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
353 {
354 CDataEncodeMsg *msg;
355
356 if (pvMsgEncodeInfo)
357 {
358 SetLastError(E_INVALIDARG);
359 return NULL;
360 }
361 msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
362 if (msg)
363 {
364 CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
365 CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update,
366 CRYPT_DefaultMsgControl);
367 msg->bare_content_len = sizeof(empty_data_content);
368 msg->bare_content = (LPBYTE)empty_data_content;
369 }
370 return msg;
371 }
372
373 typedef struct _CHashEncodeMsg
374 {
375 CryptMsgBase base;
376 HCRYPTPROV prov;
377 HCRYPTHASH hash;
378 CRYPT_DATA_BLOB data;
379 } CHashEncodeMsg;
380
381 static void CHashEncodeMsg_Close(HCRYPTMSG hCryptMsg)
382 {
383 CHashEncodeMsg *msg = hCryptMsg;
384
385 CryptMemFree(msg->data.pbData);
386 CryptDestroyHash(msg->hash);
387 if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
388 CryptReleaseContext(msg->prov, 0);
389 }
390
391 static BOOL CRYPT_EncodePKCSDigestedData(CHashEncodeMsg *msg, void *pvData,
392 DWORD *pcbData)
393 {
394 BOOL ret;
395 ALG_ID algID;
396 DWORD size = sizeof(algID);
397
398 ret = CryptGetHashParam(msg->hash, HP_ALGID, (BYTE *)&algID, &size, 0);
399 if (ret)
400 {
401 CRYPT_DIGESTED_DATA digestedData = { 0 };
402 char oid_rsa_data[] = szOID_RSA_data;
403
404 digestedData.version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
405 digestedData.DigestAlgorithm.pszObjId = (LPSTR)CertAlgIdToOID(algID);
406 /* FIXME: what about digestedData.DigestAlgorithm.Parameters? */
407 /* Quirk: OID is only encoded messages if an update has happened */
408 if (msg->base.state != MsgStateInit)
409 digestedData.ContentInfo.pszObjId = oid_rsa_data;
410 if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->data.cbData)
411 {
412 ret = CRYPT_AsnEncodeOctets(0, NULL, &msg->data,
413 CRYPT_ENCODE_ALLOC_FLAG, NULL,
414 (LPBYTE)&digestedData.ContentInfo.Content.pbData,
415 &digestedData.ContentInfo.Content.cbData);
416 }
417 if (msg->base.state == MsgStateFinalized)
418 {
419 size = sizeof(DWORD);
420 ret = CryptGetHashParam(msg->hash, HP_HASHSIZE,
421 (LPBYTE)&digestedData.hash.cbData, &size, 0);
422 if (ret)
423 {
424 digestedData.hash.pbData = CryptMemAlloc(
425 digestedData.hash.cbData);
426 ret = CryptGetHashParam(msg->hash, HP_HASHVAL,
427 digestedData.hash.pbData, &digestedData.hash.cbData, 0);
428 }
429 }
430 if (ret)
431 ret = CRYPT_AsnEncodePKCSDigestedData(&digestedData, pvData,
432 pcbData);
433 CryptMemFree(digestedData.hash.pbData);
434 LocalFree(digestedData.ContentInfo.Content.pbData);
435 }
436 return ret;
437 }
438
439 static BOOL CHashEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
440 DWORD dwIndex, void *pvData, DWORD *pcbData)
441 {
442 CHashEncodeMsg *msg = hCryptMsg;
443 BOOL ret = FALSE;
444
445 TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
446 pvData, pcbData);
447
448 switch (dwParamType)
449 {
450 case CMSG_BARE_CONTENT_PARAM:
451 if (msg->base.streamed)
452 SetLastError(E_INVALIDARG);
453 else
454 ret = CRYPT_EncodePKCSDigestedData(msg, pvData, pcbData);
455 break;
456 case CMSG_CONTENT_PARAM:
457 {
458 CRYPT_CONTENT_INFO info;
459
460 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
461 &info.Content.cbData);
462 if (ret)
463 {
464 info.Content.pbData = CryptMemAlloc(info.Content.cbData);
465 if (info.Content.pbData)
466 {
467 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
468 info.Content.pbData, &info.Content.cbData);
469 if (ret)
470 {
471 char oid_rsa_hashed[] = szOID_RSA_hashedData;
472
473 info.pszObjId = oid_rsa_hashed;
474 ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
475 PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
476 }
477 CryptMemFree(info.Content.pbData);
478 }
479 else
480 ret = FALSE;
481 }
482 break;
483 }
484 case CMSG_COMPUTED_HASH_PARAM:
485 ret = CryptGetHashParam(msg->hash, HP_HASHVAL, pvData, pcbData, 0);
486 break;
487 case CMSG_VERSION_PARAM:
488 if (msg->base.state != MsgStateFinalized)
489 SetLastError(CRYPT_E_MSG_ERROR);
490 else
491 {
492 DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
493
494 /* Since the data are always encoded as octets, the version is
495 * always 0 (see rfc3852, section 7)
496 */
497 ret = CRYPT_CopyParam(pvData, pcbData, &version, sizeof(version));
498 }
499 break;
500 default:
501 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
502 }
503 return ret;
504 }
505
506 static BOOL CHashEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
507 DWORD cbData, BOOL fFinal)
508 {
509 CHashEncodeMsg *msg = hCryptMsg;
510 BOOL ret = FALSE;
511
512 TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
513
514 if (msg->base.state == MsgStateFinalized)
515 SetLastError(CRYPT_E_MSG_ERROR);
516 else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
517 {
518 /* Doesn't do much, as stream output is never called, and you
519 * can't get the content.
520 */
521 ret = CryptHashData(msg->hash, pbData, cbData, 0);
522 msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
523 }
524 else
525 {
526 if (!fFinal)
527 SetLastError(CRYPT_E_MSG_ERROR);
528 else
529 {
530 ret = CryptHashData(msg->hash, pbData, cbData, 0);
531 if (ret)
532 {
533 msg->data.pbData = CryptMemAlloc(cbData);
534 if (msg->data.pbData)
535 {
536 memcpy(msg->data.pbData + msg->data.cbData, pbData, cbData);
537 msg->data.cbData += cbData;
538 }
539 else
540 ret = FALSE;
541 }
542 msg->base.state = MsgStateFinalized;
543 }
544 }
545 return ret;
546 }
547
548 static HCRYPTMSG CHashEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
549 LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
550 {
551 CHashEncodeMsg *msg;
552 const CMSG_HASHED_ENCODE_INFO *info = pvMsgEncodeInfo;
553 HCRYPTPROV prov;
554 ALG_ID algID;
555
556 if (info->cbSize != sizeof(CMSG_HASHED_ENCODE_INFO))
557 {
558 SetLastError(E_INVALIDARG);
559 return NULL;
560 }
561 if (!(algID = CertOIDToAlgId(info->HashAlgorithm.pszObjId)))
562 {
563 SetLastError(CRYPT_E_UNKNOWN_ALGO);
564 return NULL;
565 }
566 if (info->hCryptProv)
567 prov = info->hCryptProv;
568 else
569 {
570 prov = CRYPT_GetDefaultProvider();
571 dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
572 }
573 msg = CryptMemAlloc(sizeof(CHashEncodeMsg));
574 if (msg)
575 {
576 CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
577 CHashEncodeMsg_Close, CHashEncodeMsg_GetParam, CHashEncodeMsg_Update,
578 CRYPT_DefaultMsgControl);
579 msg->prov = prov;
580 msg->data.cbData = 0;
581 msg->data.pbData = NULL;
582 if (!CryptCreateHash(prov, algID, 0, 0, &msg->hash))
583 {
584 CryptMsgClose(msg);
585 msg = NULL;
586 }
587 }
588 return msg;
589 }
590
591 typedef struct _CMSG_SIGNER_ENCODE_INFO_WITH_CMS
592 {
593 DWORD cbSize;
594 PCERT_INFO pCertInfo;
595 HCRYPTPROV hCryptProv;
596 DWORD dwKeySpec;
597 CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
598 void *pvHashAuxInfo;
599 DWORD cAuthAttr;
600 PCRYPT_ATTRIBUTE rgAuthAttr;
601 DWORD cUnauthAttr;
602 PCRYPT_ATTRIBUTE rgUnauthAttr;
603 CERT_ID SignerId;
604 CRYPT_ALGORITHM_IDENTIFIER HashEncryptionAlgorithm;
605 void *pvHashEncryptionAuxInfo;
606 } CMSG_SIGNER_ENCODE_INFO_WITH_CMS;
607
608 typedef struct _CMSG_SIGNED_ENCODE_INFO_WITH_CMS
609 {
610 DWORD cbSize;
611 DWORD cSigners;
612 CMSG_SIGNER_ENCODE_INFO_WITH_CMS *rgSigners;
613 DWORD cCertEncoded;
614 PCERT_BLOB rgCertEncoded;
615 DWORD cCrlEncoded;
616 PCRL_BLOB rgCrlEncoded;
617 DWORD cAttrCertEncoded;
618 PCERT_BLOB rgAttrCertEncoded;
619 } CMSG_SIGNED_ENCODE_INFO_WITH_CMS;
620
621 static BOOL CRYPT_IsValidSigner(const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *signer)
622 {
623 if (signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO) &&
624 signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
625 {
626 SetLastError(E_INVALIDARG);
627 return FALSE;
628 }
629 if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
630 {
631 if (!signer->pCertInfo->SerialNumber.cbData)
632 {
633 SetLastError(E_INVALIDARG);
634 return FALSE;
635 }
636 if (!signer->pCertInfo->Issuer.cbData)
637 {
638 SetLastError(E_INVALIDARG);
639 return FALSE;
640 }
641 }
642 else if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
643 {
644 switch (signer->SignerId.dwIdChoice)
645 {
646 case 0:
647 if (!signer->pCertInfo->SerialNumber.cbData)
648 {
649 SetLastError(E_INVALIDARG);
650 return FALSE;
651 }
652 if (!signer->pCertInfo->Issuer.cbData)
653 {
654 SetLastError(E_INVALIDARG);
655 return FALSE;
656 }
657 break;
658 case CERT_ID_ISSUER_SERIAL_NUMBER:
659 if (!signer->SignerId.u.IssuerSerialNumber.SerialNumber.cbData)
660 {
661 SetLastError(E_INVALIDARG);
662 return FALSE;
663 }
664 if (!signer->SignerId.u.IssuerSerialNumber.Issuer.cbData)
665 {
666 SetLastError(E_INVALIDARG);
667 return FALSE;
668 }
669 break;
670 case CERT_ID_KEY_IDENTIFIER:
671 if (!signer->SignerId.u.KeyId.cbData)
672 {
673 SetLastError(E_INVALIDARG);
674 return FALSE;
675 }
676 break;
677 default:
678 SetLastError(E_INVALIDARG);
679 }
680 if (signer->HashEncryptionAlgorithm.pszObjId)
681 {
682 FIXME("CMSG_SIGNER_ENCODE_INFO with CMS fields unsupported\n");
683 return FALSE;
684 }
685 }
686 if (!signer->hCryptProv)
687 {
688 SetLastError(E_INVALIDARG);
689 return FALSE;
690 }
691 if (!CertOIDToAlgId(signer->HashAlgorithm.pszObjId))
692 {
693 SetLastError(CRYPT_E_UNKNOWN_ALGO);
694 return FALSE;
695 }
696 return TRUE;
697 }
698
699 static BOOL CRYPT_ConstructBlob(CRYPT_DATA_BLOB *out, const CRYPT_DATA_BLOB *in)
700 {
701 BOOL ret = TRUE;
702
703 out->cbData = in->cbData;
704 if (out->cbData)
705 {
706 out->pbData = CryptMemAlloc(out->cbData);
707 if (out->pbData)
708 memcpy(out->pbData, in->pbData, out->cbData);
709 else
710 ret = FALSE;
711 }
712 else
713 out->pbData = NULL;
714 return ret;
715 }
716
717 static BOOL CRYPT_ConstructBlobArray(DWORD *outCBlobs,
718 PCRYPT_DATA_BLOB *outPBlobs, DWORD cBlobs, const CRYPT_DATA_BLOB *pBlobs)
719 {
720 BOOL ret = TRUE;
721
722 *outCBlobs = cBlobs;
723 if (cBlobs)
724 {
725 *outPBlobs = CryptMemAlloc(cBlobs * sizeof(CRYPT_DATA_BLOB));
726 if (*outPBlobs)
727 {
728 DWORD i;
729
730 memset(*outPBlobs, 0, cBlobs * sizeof(CRYPT_DATA_BLOB));
731 for (i = 0; ret && i < cBlobs; i++)
732 ret = CRYPT_ConstructBlob(&(*outPBlobs)[i], &pBlobs[i]);
733 }
734 else
735 ret = FALSE;
736 }
737 return ret;
738 }
739
740 static void CRYPT_FreeBlobArray(DWORD cBlobs, PCRYPT_DATA_BLOB blobs)
741 {
742 DWORD i;
743
744 for (i = 0; i < cBlobs; i++)
745 CryptMemFree(blobs[i].pbData);
746 CryptMemFree(blobs);
747 }
748
749 static BOOL CRYPT_ConstructAttribute(CRYPT_ATTRIBUTE *out,
750 const CRYPT_ATTRIBUTE *in)
751 {
752 BOOL ret;
753
754 out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
755 if (out->pszObjId)
756 {
757 strcpy(out->pszObjId, in->pszObjId);
758 ret = CRYPT_ConstructBlobArray(&out->cValue, &out->rgValue,
759 in->cValue, in->rgValue);
760 }
761 else
762 ret = FALSE;
763 return ret;
764 }
765
766 static BOOL CRYPT_ConstructAttributes(CRYPT_ATTRIBUTES *out,
767 const CRYPT_ATTRIBUTES *in)
768 {
769 BOOL ret = TRUE;
770
771 out->cAttr = in->cAttr;
772 if (out->cAttr)
773 {
774 out->rgAttr = CryptMemAlloc(out->cAttr * sizeof(CRYPT_ATTRIBUTE));
775 if (out->rgAttr)
776 {
777 DWORD i;
778
779 memset(out->rgAttr, 0, out->cAttr * sizeof(CRYPT_ATTRIBUTE));
780 for (i = 0; ret && i < out->cAttr; i++)
781 ret = CRYPT_ConstructAttribute(&out->rgAttr[i], &in->rgAttr[i]);
782 }
783 else
784 ret = FALSE;
785 }
786 else
787 out->rgAttr = NULL;
788 return ret;
789 }
790
791 /* Constructs a CMSG_CMS_SIGNER_INFO from a CMSG_SIGNER_ENCODE_INFO_WITH_CMS. */
792 static BOOL CSignerInfo_Construct(CMSG_CMS_SIGNER_INFO *info,
793 const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *in)
794 {
795 BOOL ret;
796
797 if (in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
798 {
799 info->dwVersion = CMSG_SIGNER_INFO_V1;
800 ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
801 &in->pCertInfo->Issuer);
802 if (ret)
803 ret = CRYPT_ConstructBlob(
804 &info->SignerId.u.IssuerSerialNumber.SerialNumber,
805 &in->pCertInfo->SerialNumber);
806 info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
807 info->HashEncryptionAlgorithm.pszObjId =
808 in->pCertInfo->SubjectPublicKeyInfo.Algorithm.pszObjId;
809 if (ret)
810 ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
811 &in->pCertInfo->SubjectPublicKeyInfo.Algorithm.Parameters);
812 }
813 else
814 {
815 const CRYPT_ALGORITHM_IDENTIFIER *pEncrAlg;
816
817 /* Implicitly in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS).
818 * See CRYPT_IsValidSigner.
819 */
820 if (!in->SignerId.dwIdChoice)
821 {
822 info->dwVersion = CMSG_SIGNER_INFO_V1;
823 ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
824 &in->pCertInfo->Issuer);
825 if (ret)
826 ret = CRYPT_ConstructBlob(
827 &info->SignerId.u.IssuerSerialNumber.SerialNumber,
828 &in->pCertInfo->SerialNumber);
829 info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
830 }
831 else if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
832 {
833 info->dwVersion = CMSG_SIGNER_INFO_V1;
834 info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
835 ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
836 &in->SignerId.u.IssuerSerialNumber.Issuer);
837 if (ret)
838 ret = CRYPT_ConstructBlob(
839 &info->SignerId.u.IssuerSerialNumber.SerialNumber,
840 &in->SignerId.u.IssuerSerialNumber.SerialNumber);
841 }
842 else
843 {
844 /* Implicitly dwIdChoice == CERT_ID_KEY_IDENTIFIER */
845 info->dwVersion = CMSG_SIGNER_INFO_V3;
846 info->SignerId.dwIdChoice = CERT_ID_KEY_IDENTIFIER;
847 ret = CRYPT_ConstructBlob(&info->SignerId.u.KeyId,
848 &in->SignerId.u.KeyId);
849 }
850 pEncrAlg = in->HashEncryptionAlgorithm.pszObjId ?
851 &in->HashEncryptionAlgorithm :
852 &in->pCertInfo->SubjectPublicKeyInfo.Algorithm;
853 info->HashEncryptionAlgorithm.pszObjId = pEncrAlg->pszObjId;
854 if (ret)
855 ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
856 &pEncrAlg->Parameters);
857 }
858 /* Assumption: algorithm IDs will point to static strings, not
859 * stack-based ones, so copying the pointer values is safe.
860 */
861 info->HashAlgorithm.pszObjId = in->HashAlgorithm.pszObjId;
862 if (ret)
863 ret = CRYPT_ConstructBlob(&info->HashAlgorithm.Parameters,
864 &in->HashAlgorithm.Parameters);
865 if (ret)
866 ret = CRYPT_ConstructAttributes(&info->AuthAttrs,
867 (CRYPT_ATTRIBUTES *)&in->cAuthAttr);
868 if (ret)
869 ret = CRYPT_ConstructAttributes(&info->UnauthAttrs,
870 (CRYPT_ATTRIBUTES *)&in->cUnauthAttr);
871 return ret;
872 }
873
874 static void CSignerInfo_Free(CMSG_CMS_SIGNER_INFO *info)
875 {
876 DWORD i, j;
877
878 if (info->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
879 {
880 CryptMemFree(info->SignerId.u.IssuerSerialNumber.Issuer.pbData);
881 CryptMemFree(info->SignerId.u.IssuerSerialNumber.SerialNumber.pbData);
882 }
883 else
884 CryptMemFree(info->SignerId.u.KeyId.pbData);
885 CryptMemFree(info->HashAlgorithm.Parameters.pbData);
886 CryptMemFree(info->HashEncryptionAlgorithm.Parameters.pbData);
887 CryptMemFree(info->EncryptedHash.pbData);
888 for (i = 0; i < info->AuthAttrs.cAttr; i++)
889 {
890 for (j = 0; j < info->AuthAttrs.rgAttr[i].cValue; j++)
891 CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue[j].pbData);
892 CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue);
893 CryptMemFree(info->AuthAttrs.rgAttr[i].pszObjId);
894 }
895 CryptMemFree(info->AuthAttrs.rgAttr);
896 for (i = 0; i < info->UnauthAttrs.cAttr; i++)
897 {
898 for (j = 0; j < info->UnauthAttrs.rgAttr[i].cValue; j++)
899 CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue[j].pbData);
900 CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue);
901 CryptMemFree(info->UnauthAttrs.rgAttr[i].pszObjId);
902 }
903 CryptMemFree(info->UnauthAttrs.rgAttr);
904 }
905
906 typedef struct _CSignerHandles
907 {
908 HCRYPTHASH contentHash;
909 HCRYPTHASH authAttrHash;
910 } CSignerHandles;
911
912 typedef struct _CSignedMsgData
913 {
914 CRYPT_SIGNED_INFO *info;
915 DWORD cSignerHandle;
916 CSignerHandles *signerHandles;
917 } CSignedMsgData;
918
919 /* Constructs the signer handles for the signerIndex'th signer of msg_data.
920 * Assumes signerIndex is a valid idnex, and that msg_data's info has already
921 * been constructed.
922 */
923 static BOOL CSignedMsgData_ConstructSignerHandles(CSignedMsgData *msg_data,
924 DWORD signerIndex, HCRYPTPROV crypt_prov)
925 {
926 ALG_ID algID;
927 BOOL ret;
928
929 algID = CertOIDToAlgId(
930 msg_data->info->rgSignerInfo[signerIndex].HashAlgorithm.pszObjId);
931 ret = CryptCreateHash(crypt_prov, algID, 0, 0,
932 &msg_data->signerHandles->contentHash);
933 if (ret && msg_data->info->rgSignerInfo[signerIndex].AuthAttrs.cAttr > 0)
934 ret = CryptCreateHash(crypt_prov, algID, 0, 0,
935 &msg_data->signerHandles->authAttrHash);
936 return ret;
937 }
938
939 /* Allocates a CSignedMsgData's handles. Assumes its info has already been
940 * constructed.
941 */
942 static BOOL CSignedMsgData_AllocateHandles(CSignedMsgData *msg_data)
943 {
944 BOOL ret = TRUE;
945
946 if (msg_data->info->cSignerInfo)
947 {
948 msg_data->signerHandles =
949 CryptMemAlloc(msg_data->info->cSignerInfo * sizeof(CSignerHandles));
950 if (msg_data->signerHandles)
951 {
952 msg_data->cSignerHandle = msg_data->info->cSignerInfo;
953 memset(msg_data->signerHandles, 0,
954 msg_data->info->cSignerInfo * sizeof(CSignerHandles));
955 }
956 else
957 {
958 msg_data->cSignerHandle = 0;
959 ret = FALSE;
960 }
961 }
962 else
963 {
964 msg_data->cSignerHandle = 0;
965 msg_data->signerHandles = NULL;
966 }
967 return ret;
968 }
969
970 static void CSignedMsgData_CloseHandles(CSignedMsgData *msg_data)
971 {
972 DWORD i;
973
974 for (i = 0; i < msg_data->cSignerHandle; i++)
975 {
976 if (msg_data->signerHandles[i].contentHash)
977 CryptDestroyHash(msg_data->signerHandles[i].contentHash);
978 if (msg_data->signerHandles[i].authAttrHash)
979 CryptDestroyHash(msg_data->signerHandles[i].authAttrHash);
980 }
981 CryptMemFree(msg_data->signerHandles);
982 msg_data->signerHandles = NULL;
983 msg_data->cSignerHandle = 0;
984 }
985
986 static BOOL CSignedMsgData_UpdateHash(CSignedMsgData *msg_data,
987 const BYTE *pbData, DWORD cbData)
988 {
989 DWORD i;
990 BOOL ret = TRUE;
991
992 for (i = 0; ret && i < msg_data->cSignerHandle; i++)
993 ret = CryptHashData(msg_data->signerHandles[i].contentHash, pbData,
994 cbData, 0);
995 return ret;
996 }
997
998 static BOOL CRYPT_AppendAttribute(CRYPT_ATTRIBUTES *out,
999 const CRYPT_ATTRIBUTE *in)
1000 {
1001 BOOL ret = FALSE;
1002
1003 out->rgAttr = CryptMemRealloc(out->rgAttr,
1004 (out->cAttr + 1) * sizeof(CRYPT_ATTRIBUTE));
1005 if (out->rgAttr)
1006 {
1007 ret = CRYPT_ConstructAttribute(&out->rgAttr[out->cAttr], in);
1008 if (ret)
1009 out->cAttr++;
1010 }
1011 return ret;
1012 }
1013
1014 static BOOL CSignedMsgData_AppendMessageDigestAttribute(
1015 CSignedMsgData *msg_data, DWORD signerIndex)
1016 {
1017 BOOL ret;
1018 DWORD size;
1019 CRYPT_HASH_BLOB hash = { 0, NULL }, encodedHash = { 0, NULL };
1020 char messageDigest[] = szOID_RSA_messageDigest;
1021 CRYPT_ATTRIBUTE messageDigestAttr = { messageDigest, 1, &encodedHash };
1022
1023 size = sizeof(DWORD);
1024 ret = CryptGetHashParam(
1025 msg_data->signerHandles[signerIndex].contentHash, HP_HASHSIZE,
1026 (LPBYTE)&hash.cbData, &size, 0);
1027 if (ret)
1028 {
1029 hash.pbData = CryptMemAlloc(hash.cbData);
1030 ret = CryptGetHashParam(
1031 msg_data->signerHandles[signerIndex].contentHash, HP_HASHVAL,
1032 hash.pbData, &hash.cbData, 0);
1033 if (ret)
1034 {
1035 ret = CRYPT_AsnEncodeOctets(0, NULL, &hash, CRYPT_ENCODE_ALLOC_FLAG,
1036 NULL, (LPBYTE)&encodedHash.pbData, &encodedHash.cbData);
1037 if (ret)
1038 {
1039 ret = CRYPT_AppendAttribute(
1040 &msg_data->info->rgSignerInfo[signerIndex].AuthAttrs,
1041 &messageDigestAttr);
1042 LocalFree(encodedHash.pbData);
1043 }
1044 }
1045 CryptMemFree(hash.pbData);
1046 }
1047 return ret;
1048 }
1049
1050 typedef enum {
1051 Sign,
1052 Verify
1053 } SignOrVerify;
1054
1055 static BOOL CSignedMsgData_UpdateAuthenticatedAttributes(
1056 CSignedMsgData *msg_data, SignOrVerify flag)
1057 {
1058 DWORD i;
1059 BOOL ret = TRUE;
1060
1061 TRACE("(%p)\n", msg_data);
1062
1063 for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
1064 {
1065 if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
1066 {
1067 if (flag == Sign)
1068 {
1069 BYTE oid_rsa_data_encoded[] = { 0x06,0x09,0x2a,0x86,0x48,0x86,
1070 0xf7,0x0d,0x01,0x07,0x01 };
1071 CRYPT_DATA_BLOB content = { sizeof(oid_rsa_data_encoded),
1072 oid_rsa_data_encoded };
1073 char contentType[] = szOID_RSA_contentType;
1074 CRYPT_ATTRIBUTE contentTypeAttr = { contentType, 1, &content };
1075
1076 /* FIXME: does this depend on inner OID? */
1077 ret = CRYPT_AppendAttribute(
1078 &msg_data->info->rgSignerInfo[i].AuthAttrs, &contentTypeAttr);
1079 if (ret)
1080 ret = CSignedMsgData_AppendMessageDigestAttribute(msg_data,
1081 i);
1082 }
1083 if (ret)
1084 {
1085 LPBYTE encodedAttrs;
1086 DWORD size;
1087
1088 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, PKCS_ATTRIBUTES,
1089 &msg_data->info->rgSignerInfo[i].AuthAttrs,
1090 CRYPT_ENCODE_ALLOC_FLAG, NULL, &encodedAttrs, &size);
1091 if (ret)
1092 {
1093 ret = CryptHashData(
1094 msg_data->signerHandles[i].authAttrHash, encodedAttrs,
1095 size, 0);
1096 LocalFree(encodedAttrs);
1097 }
1098 }
1099 }
1100 }
1101 TRACE("returning %d\n", ret);
1102 return ret;
1103 }
1104
1105 static void CRYPT_ReverseBytes(CRYPT_HASH_BLOB *hash)
1106 {
1107 DWORD i;
1108 BYTE tmp;
1109
1110 for (i = 0; i < hash->cbData / 2; i++)
1111 {
1112 tmp = hash->pbData[hash->cbData - i - 1];
1113 hash->pbData[hash->cbData - i - 1] = hash->pbData[i];
1114 hash->pbData[i] = tmp;
1115 }
1116 }
1117
1118 static BOOL CSignedMsgData_Sign(CSignedMsgData *msg_data)
1119 {
1120 DWORD i;
1121 BOOL ret = TRUE;
1122
1123 TRACE("(%p)\n", msg_data);
1124
1125 for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
1126 {
1127 HCRYPTHASH hash;
1128
1129 if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
1130 hash = msg_data->signerHandles[i].authAttrHash;
1131 else
1132 hash = msg_data->signerHandles[i].contentHash;
1133 ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0, NULL,
1134 &msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1135 if (ret)
1136 {
1137 msg_data->info->rgSignerInfo[i].EncryptedHash.pbData =
1138 CryptMemAlloc(
1139 msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1140 if (msg_data->info->rgSignerInfo[i].EncryptedHash.pbData)
1141 {
1142 ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0,
1143 msg_data->info->rgSignerInfo[i].EncryptedHash.pbData,
1144 &msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1145 if (ret)
1146 CRYPT_ReverseBytes(
1147 &msg_data->info->rgSignerInfo[i].EncryptedHash);
1148 }
1149 else
1150 ret = FALSE;
1151 }
1152 }
1153 return ret;
1154 }
1155
1156 static BOOL CSignedMsgData_Update(CSignedMsgData *msg_data,
1157 const BYTE *pbData, DWORD cbData, BOOL fFinal, SignOrVerify flag)
1158 {
1159 BOOL ret = CSignedMsgData_UpdateHash(msg_data, pbData, cbData);
1160
1161 if (ret && fFinal)
1162 {
1163 ret = CSignedMsgData_UpdateAuthenticatedAttributes(msg_data, flag);
1164 if (ret && flag == Sign)
1165 ret = CSignedMsgData_Sign(msg_data);
1166 }
1167 return ret;
1168 }
1169
1170 typedef struct _CSignedEncodeMsg
1171 {
1172 CryptMsgBase base;
1173 LPSTR innerOID;
1174 CRYPT_DATA_BLOB data;
1175 CSignedMsgData msg_data;
1176 } CSignedEncodeMsg;
1177
1178 static void CSignedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
1179 {
1180 CSignedEncodeMsg *msg = hCryptMsg;
1181 DWORD i;
1182
1183 CryptMemFree(msg->innerOID);
1184 CryptMemFree(msg->data.pbData);
1185 CRYPT_FreeBlobArray(msg->msg_data.info->cCertEncoded,
1186 msg->msg_data.info->rgCertEncoded);
1187 CRYPT_FreeBlobArray(msg->msg_data.info->cCrlEncoded,
1188 msg->msg_data.info->rgCrlEncoded);
1189 for (i = 0; i < msg->msg_data.info->cSignerInfo; i++)
1190 CSignerInfo_Free(&msg->msg_data.info->rgSignerInfo[i]);
1191 CSignedMsgData_CloseHandles(&msg->msg_data);
1192 CryptMemFree(msg->msg_data.info->rgSignerInfo);
1193 CryptMemFree(msg->msg_data.info);
1194 }
1195
1196 static BOOL CSignedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1197 DWORD dwIndex, void *pvData, DWORD *pcbData)
1198 {
1199 CSignedEncodeMsg *msg = hCryptMsg;
1200 BOOL ret = FALSE;
1201
1202 switch (dwParamType)
1203 {
1204 case CMSG_CONTENT_PARAM:
1205 {
1206 CRYPT_CONTENT_INFO info;
1207
1208 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
1209 &info.Content.cbData);
1210 if (ret)
1211 {
1212 info.Content.pbData = CryptMemAlloc(info.Content.cbData);
1213 if (info.Content.pbData)
1214 {
1215 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
1216 info.Content.pbData, &info.Content.cbData);
1217 if (ret)
1218 {
1219 char oid_rsa_signed[] = szOID_RSA_signedData;
1220
1221 info.pszObjId = oid_rsa_signed;
1222 ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
1223 PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
1224 }
1225 CryptMemFree(info.Content.pbData);
1226 }
1227 else
1228 ret = FALSE;
1229 }
1230 break;
1231 }
1232 case CMSG_BARE_CONTENT_PARAM:
1233 {
1234 CRYPT_SIGNED_INFO info;
1235 BOOL freeContent = FALSE;
1236
1237 info = *msg->msg_data.info;
1238 if (!msg->innerOID || !strcmp(msg->innerOID, szOID_RSA_data))
1239 {
1240 char oid_rsa_data[] = szOID_RSA_data;
1241
1242 /* Quirk: OID is only encoded messages if an update has happened */
1243 if (msg->base.state != MsgStateInit)
1244 info.content.pszObjId = oid_rsa_data;
1245 else
1246 info.content.pszObjId = NULL;
1247 if (msg->data.cbData)
1248 {
1249 CRYPT_DATA_BLOB blob = { msg->data.cbData, msg->data.pbData };
1250
1251 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
1252 &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL,
1253 &info.content.Content.pbData, &info.content.Content.cbData);
1254 freeContent = TRUE;
1255 }
1256 else
1257 {
1258 info.content.Content.cbData = 0;
1259 info.content.Content.pbData = NULL;
1260 ret = TRUE;
1261 }
1262 }
1263 else
1264 {
1265 info.content.pszObjId = msg->innerOID;
1266 info.content.Content.cbData = msg->data.cbData;
1267 info.content.Content.pbData = msg->data.pbData;
1268 ret = TRUE;
1269 }
1270 if (ret)
1271 {
1272 ret = CRYPT_AsnEncodeCMSSignedInfo(&info, pvData, pcbData);
1273 if (freeContent)
1274 LocalFree(info.content.Content.pbData);
1275 }
1276 break;
1277 }
1278 case CMSG_COMPUTED_HASH_PARAM:
1279 if (dwIndex >= msg->msg_data.cSignerHandle)
1280 SetLastError(CRYPT_E_INVALID_INDEX);
1281 else
1282 ret = CryptGetHashParam(
1283 msg->msg_data.signerHandles[dwIndex].contentHash, HP_HASHVAL,
1284 pvData, pcbData, 0);
1285 break;
1286 case CMSG_ENCODED_SIGNER:
1287 if (dwIndex >= msg->msg_data.info->cSignerInfo)
1288 SetLastError(CRYPT_E_INVALID_INDEX);
1289 else
1290 ret = CryptEncodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1291 CMS_SIGNER_INFO, &msg->msg_data.info->rgSignerInfo[dwIndex], 0,
1292 NULL, pvData, pcbData);
1293 break;
1294 case CMSG_VERSION_PARAM:
1295 ret = CRYPT_CopyParam(pvData, pcbData, &msg->msg_data.info->version,
1296 sizeof(msg->msg_data.info->version));
1297 break;
1298 default:
1299 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1300 }
1301 return ret;
1302 }
1303
1304 static BOOL CSignedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1305 DWORD cbData, BOOL fFinal)
1306 {
1307 CSignedEncodeMsg *msg = hCryptMsg;
1308 BOOL ret = FALSE;
1309
1310 if (msg->base.state == MsgStateFinalized)
1311 SetLastError(CRYPT_E_MSG_ERROR);
1312 else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
1313 {
1314 ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData, fFinal,
1315 Sign);
1316 if (msg->base.streamed)
1317 FIXME("streamed partial stub\n");
1318 msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
1319 }
1320 else
1321 {
1322 if (!fFinal)
1323 SetLastError(CRYPT_E_MSG_ERROR);
1324 else
1325 {
1326 if (cbData)
1327 {
1328 msg->data.pbData = CryptMemAlloc(cbData);
1329 if (msg->data.pbData)
1330 {
1331 memcpy(msg->data.pbData, pbData, cbData);
1332 msg->data.cbData = cbData;
1333 ret = TRUE;
1334 }
1335 }
1336 else
1337 ret = TRUE;
1338 if (ret)
1339 ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData,
1340 fFinal, Sign);
1341 msg->base.state = MsgStateFinalized;
1342 }
1343 }
1344 return ret;
1345 }
1346
1347 static HCRYPTMSG CSignedEncodeMsg_Open(DWORD dwFlags,
1348 const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
1349 PCMSG_STREAM_INFO pStreamInfo)
1350 {
1351 const CMSG_SIGNED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
1352 DWORD i;
1353 CSignedEncodeMsg *msg;
1354
1355 if (info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO) &&
1356 info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS))
1357 {
1358 SetLastError(E_INVALIDARG);
1359 return NULL;
1360 }
1361 if (info->cbSize == sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS) &&
1362 info->cAttrCertEncoded)
1363 {
1364 FIXME("CMSG_SIGNED_ENCODE_INFO with CMS fields unsupported\n");
1365 return NULL;
1366 }
1367 for (i = 0; i < info->cSigners; i++)
1368 if (!CRYPT_IsValidSigner(&info->rgSigners[i]))
1369 return NULL;
1370 msg = CryptMemAlloc(sizeof(CSignedEncodeMsg));
1371 if (msg)
1372 {
1373 BOOL ret = TRUE;
1374
1375 CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1376 CSignedEncodeMsg_Close, CSignedEncodeMsg_GetParam,
1377 CSignedEncodeMsg_Update, CRYPT_DefaultMsgControl);
1378 if (pszInnerContentObjID)
1379 {
1380 msg->innerOID = CryptMemAlloc(strlen(pszInnerContentObjID) + 1);
1381 if (msg->innerOID)
1382 strcpy(msg->innerOID, pszInnerContentObjID);
1383 else
1384 ret = FALSE;
1385 }
1386 else
1387 msg->innerOID = NULL;
1388 msg->data.cbData = 0;
1389 msg->data.pbData = NULL;
1390 if (ret)
1391 msg->msg_data.info = CryptMemAlloc(sizeof(CRYPT_SIGNED_INFO));
1392 else
1393 msg->msg_data.info = NULL;
1394 if (msg->msg_data.info)
1395 {
1396 memset(msg->msg_data.info, 0, sizeof(CRYPT_SIGNED_INFO));
1397 msg->msg_data.info->version = CMSG_SIGNED_DATA_V1;
1398 }
1399 else
1400 ret = FALSE;
1401 if (ret)
1402 {
1403 if (info->cSigners)
1404 {
1405 msg->msg_data.info->rgSignerInfo =
1406 CryptMemAlloc(info->cSigners * sizeof(CMSG_CMS_SIGNER_INFO));
1407 if (msg->msg_data.info->rgSignerInfo)
1408 {
1409 msg->msg_data.info->cSignerInfo = info->cSigners;
1410 memset(msg->msg_data.info->rgSignerInfo, 0,
1411 msg->msg_data.info->cSignerInfo *
1412 sizeof(CMSG_CMS_SIGNER_INFO));
1413 ret = CSignedMsgData_AllocateHandles(&msg->msg_data);
1414 for (i = 0; ret && i < msg->msg_data.info->cSignerInfo; i++)
1415 {
1416 if (info->rgSigners[i].SignerId.dwIdChoice ==
1417 CERT_ID_KEY_IDENTIFIER)
1418 msg->msg_data.info->version = CMSG_SIGNED_DATA_V3;
1419 ret = CSignerInfo_Construct(
1420 &msg->msg_data.info->rgSignerInfo[i],
1421 &info->rgSigners[i]);
1422 if (ret)
1423 {
1424 ret = CSignedMsgData_ConstructSignerHandles(
1425 &msg->msg_data, i, info->rgSigners[i].hCryptProv);
1426 if (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1427 CryptReleaseContext(info->rgSigners[i].hCryptProv,
1428 0);
1429 }
1430 }
1431 }
1432 else
1433 ret = FALSE;
1434 }
1435 else
1436 {
1437 msg->msg_data.info->cSignerInfo = 0;
1438 msg->msg_data.signerHandles = NULL;
1439 msg->msg_data.cSignerHandle = 0;
1440 }
1441 }
1442 if (ret)
1443 ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCertEncoded,
1444 &msg->msg_data.info->rgCertEncoded, info->cCertEncoded,
1445 info->rgCertEncoded);
1446 if (ret)
1447 ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCrlEncoded,
1448 &msg->msg_data.info->rgCrlEncoded, info->cCrlEncoded,
1449 info->rgCrlEncoded);
1450 if (!ret)
1451 {
1452 CSignedEncodeMsg_Close(msg);
1453 CryptMemFree(msg);
1454 msg = NULL;
1455 }
1456 }
1457 return msg;
1458 }
1459
1460 typedef struct _CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS
1461 {
1462 DWORD cbSize;
1463 HCRYPTPROV_LEGACY hCryptProv;
1464 CRYPT_ALGORITHM_IDENTIFIER ContentEncryptionAlgorithm;
1465 void *pvEncryptionAuxInfo;
1466 DWORD cRecipients;
1467 PCERT_INFO *rgpRecipientCert;
1468 PCMSG_RECIPIENT_ENCODE_INFO rgCmsRecipients;
1469 DWORD cCertEncoded;
1470 PCERT_BLOB rgCertEncoded;
1471 DWORD cCrlEncoded;
1472 PCRL_BLOB rgCrlEncoded;
1473 DWORD cAttrCertEncoded;
1474 PCERT_BLOB rgAttrCertEncoded;
1475 DWORD cUnprotectedAttr;
1476 PCRYPT_ATTRIBUTE rgUnprotectedAttr;
1477 } CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS;
1478
1479 typedef struct _CEnvelopedEncodeMsg
1480 {
1481 CryptMsgBase base;
1482 CRYPT_ALGORITHM_IDENTIFIER algo;
1483 HCRYPTPROV prov;
1484 HCRYPTKEY key;
1485 DWORD cRecipientInfo;
1486 CMSG_KEY_TRANS_RECIPIENT_INFO *recipientInfo;
1487 CRYPT_DATA_BLOB data;
1488 } CEnvelopedEncodeMsg;
1489
1490 static BOOL CRYPT_ConstructAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
1491 const CRYPT_ALGORITHM_IDENTIFIER *in)
1492 {
1493 out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
1494 if (out->pszObjId)
1495 {
1496 strcpy(out->pszObjId, in->pszObjId);
1497 return CRYPT_ConstructBlob(&out->Parameters, &in->Parameters);
1498 }
1499 else
1500 return FALSE;
1501 }
1502
1503 static BOOL CRYPT_ConstructBitBlob(CRYPT_BIT_BLOB *out, const CRYPT_BIT_BLOB *in)
1504 {
1505 out->cbData = in->cbData;
1506 out->cUnusedBits = in->cUnusedBits;
1507 if (out->cbData)
1508 {
1509 out->pbData = CryptMemAlloc(out->cbData);
1510 if (out->pbData)
1511 memcpy(out->pbData, in->pbData, out->cbData);
1512 else
1513 return FALSE;
1514 }
1515 else
1516 out->pbData = NULL;
1517 return TRUE;
1518 }
1519
1520 static BOOL CRYPT_GenKey(CMSG_CONTENT_ENCRYPT_INFO *info, ALG_ID algID)
1521 {
1522 static HCRYPTOIDFUNCSET set = NULL;
1523 PFN_CMSG_GEN_CONTENT_ENCRYPT_KEY genKeyFunc = NULL;
1524 HCRYPTOIDFUNCADDR hFunc;
1525 BOOL ret;
1526
1527 if (!set)
1528 set = CryptInitOIDFunctionSet(CMSG_OID_GEN_CONTENT_ENCRYPT_KEY_FUNC, 0);
1529 CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING,
1530 info->ContentEncryptionAlgorithm.pszObjId, 0, (void **)&genKeyFunc, &hFunc);
1531 if (genKeyFunc)
1532 {
1533 ret = genKeyFunc(info, 0, NULL);
1534 CryptFreeOIDFunctionAddress(hFunc, 0);
1535 }
1536 else
1537 ret = CryptGenKey(info->hCryptProv, algID, CRYPT_EXPORTABLE,
1538 &info->hContentEncryptKey);
1539 return ret;
1540 }
1541
1542 static BOOL WINAPI CRYPT_ExportKeyTrans(
1543 PCMSG_CONTENT_ENCRYPT_INFO pContentEncryptInfo,
1544 PCMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO pKeyTransEncodeInfo,
1545 PCMSG_KEY_TRANS_ENCRYPT_INFO pKeyTransEncryptInfo,
1546 DWORD dwFlags, void *pvReserved)
1547 {
1548 CERT_PUBLIC_KEY_INFO keyInfo;
1549 HCRYPTKEY expKey;
1550 BOOL ret;
1551
1552 ret = CRYPT_ConstructAlgorithmId(&keyInfo.Algorithm,
1553 &pKeyTransEncodeInfo->KeyEncryptionAlgorithm);
1554 if (ret)
1555 CRYPT_ConstructBitBlob(&keyInfo.PublicKey,
1556 &pKeyTransEncodeInfo->RecipientPublicKey);
1557
1558 if (ret)
1559 ret = CryptImportPublicKeyInfo(pKeyTransEncodeInfo->hCryptProv,
1560 X509_ASN_ENCODING, &keyInfo, &expKey);
1561 if (ret)
1562 {
1563 DWORD size;
1564
1565 ret = CryptExportKey(pContentEncryptInfo->hContentEncryptKey, expKey,
1566 SIMPLEBLOB, 0, NULL, &size);
1567 if (ret)
1568 {
1569 BYTE *keyBlob;
1570
1571 keyBlob = CryptMemAlloc(size);
1572 if (keyBlob)
1573 {
1574 ret = CryptExportKey(pContentEncryptInfo->hContentEncryptKey,
1575 expKey, SIMPLEBLOB, 0, keyBlob, &size);
1576 if (ret)
1577 {
1578 DWORD head = sizeof(BLOBHEADER) + sizeof(ALG_ID);
1579
1580 pKeyTransEncryptInfo->EncryptedKey.pbData =
1581 CryptMemAlloc(size - head);
1582 if (pKeyTransEncryptInfo->EncryptedKey.pbData)
1583 {
1584 DWORD i, k = 0;
1585
1586 pKeyTransEncryptInfo->EncryptedKey.cbData = size - head;
1587 for (i = size - 1; i >= head; --i, ++k)
1588 pKeyTransEncryptInfo->EncryptedKey.pbData[k] =
1589 keyBlob[i];
1590 }
1591 else
1592 ret = FALSE;
1593 }
1594 CryptMemFree(keyBlob);
1595 }
1596 else
1597 ret = FALSE;
1598 }
1599 CryptDestroyKey(expKey);
1600 }
1601
1602 CryptMemFree(keyInfo.PublicKey.pbData);
1603 CryptMemFree(keyInfo.Algorithm.pszObjId);
1604 CryptMemFree(keyInfo.Algorithm.Parameters.pbData);
1605 return ret;
1606 }
1607
1608 static BOOL CRYPT_ExportEncryptedKey(CMSG_CONTENT_ENCRYPT_INFO *info, DWORD i,
1609 CRYPT_DATA_BLOB *key)
1610 {
1611 static HCRYPTOIDFUNCSET set = NULL;
1612 PFN_CMSG_EXPORT_KEY_TRANS exportKeyFunc = NULL;
1613 HCRYPTOIDFUNCADDR hFunc = NULL;
1614 CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo =
1615 info->rgCmsRecipients[i].u.pKeyTrans;
1616 CMSG_KEY_TRANS_ENCRYPT_INFO encryptInfo;
1617 BOOL ret;
1618
1619 memset(&encryptInfo, 0, sizeof(encryptInfo));
1620 encryptInfo.cbSize = sizeof(encryptInfo);
1621 encryptInfo.dwRecipientIndex = i;
1622 ret = CRYPT_ConstructAlgorithmId(&encryptInfo.KeyEncryptionAlgorithm,
1623 &encodeInfo->KeyEncryptionAlgorithm);
1624
1625 if (!set)
1626 set = CryptInitOIDFunctionSet(CMSG_OID_EXPORT_KEY_TRANS_FUNC, 0);
1627 CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING,
1628 encryptInfo.KeyEncryptionAlgorithm.pszObjId, 0, (void **)&exportKeyFunc,
1629 &hFunc);
1630 if (!exportKeyFunc)
1631 exportKeyFunc = CRYPT_ExportKeyTrans;
1632 if (ret)
1633 {
1634 ret = exportKeyFunc(info, encodeInfo, &encryptInfo, 0, NULL);
1635 if (ret)
1636 {
1637 key->cbData = encryptInfo.EncryptedKey.cbData;
1638 key->pbData = encryptInfo.EncryptedKey.pbData;
1639 }
1640 }
1641 if (hFunc)
1642 CryptFreeOIDFunctionAddress(hFunc, 0);
1643
1644 CryptMemFree(encryptInfo.KeyEncryptionAlgorithm.pszObjId);
1645 CryptMemFree(encryptInfo.KeyEncryptionAlgorithm.Parameters.pbData);
1646 return ret;
1647 }
1648
1649 static LPVOID WINAPI mem_alloc(size_t size)
1650 {
1651 return HeapAlloc(GetProcessHeap(), 0, size);
1652 }
1653
1654 static VOID WINAPI mem_free(LPVOID pv)
1655 {
1656 HeapFree(GetProcessHeap(), 0, pv);
1657 }
1658
1659
1660 static BOOL CContentEncryptInfo_Construct(CMSG_CONTENT_ENCRYPT_INFO *info,
1661 const CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS *in, HCRYPTPROV prov)
1662 {
1663 BOOL ret;
1664
1665 info->cbSize = sizeof(CMSG_CONTENT_ENCRYPT_INFO);
1666 info->hCryptProv = prov;
1667 ret = CRYPT_ConstructAlgorithmId(&info->ContentEncryptionAlgorithm,
1668 &in->ContentEncryptionAlgorithm);
1669 info->pvEncryptionAuxInfo = in->pvEncryptionAuxInfo;
1670 info->cRecipients = in->cRecipients;
1671 if (ret)
1672 {
1673 info->rgCmsRecipients = CryptMemAlloc(in->cRecipients *
1674 sizeof(CMSG_RECIPIENT_ENCODE_INFO));
1675 if (info->rgCmsRecipients)
1676 {
1677 DWORD i;
1678
1679 for (i = 0; ret && i < in->cRecipients; ++i)
1680 {
1681 CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo;
1682 CERT_INFO *cert = in->rgpRecipientCert[i];
1683
1684 info->rgCmsRecipients[i].dwRecipientChoice =
1685 CMSG_KEY_TRANS_RECIPIENT;
1686 encodeInfo = CryptMemAlloc(sizeof(*encodeInfo));
1687 info->rgCmsRecipients[i].u.pKeyTrans = encodeInfo;
1688 if (encodeInfo)
1689 {
1690 encodeInfo->cbSize = sizeof(*encodeInfo);
1691 ret = CRYPT_ConstructAlgorithmId(
1692 &encodeInfo->KeyEncryptionAlgorithm,
1693 &cert->SubjectPublicKeyInfo.Algorithm);
1694 encodeInfo->pvKeyEncryptionAuxInfo = NULL;
1695 encodeInfo->hCryptProv = prov;
1696 if (ret)
1697 ret = CRYPT_ConstructBitBlob(
1698 &encodeInfo->RecipientPublicKey,
1699 &cert->SubjectPublicKeyInfo.PublicKey);
1700 if (ret)
1701 ret = CRYPT_ConstructBlob(
1702 &encodeInfo->RecipientId.u.IssuerSerialNumber.Issuer,
1703 &cert->Issuer);
1704 if (ret)
1705 ret = CRYPT_ConstructBlob(
1706 &encodeInfo->RecipientId.u.IssuerSerialNumber.SerialNumber,
1707 &cert->SerialNumber);
1708 }
1709 else
1710 ret = FALSE;
1711 }
1712 }
1713 else
1714 ret = FALSE;
1715 }
1716 info->pfnAlloc = mem_alloc;
1717 info->pfnFree = mem_free;
1718 return ret;
1719 }
1720
1721 static void CContentEncryptInfo_Free(CMSG_CONTENT_ENCRYPT_INFO *info)
1722 {
1723 CryptMemFree(info->ContentEncryptionAlgorithm.pszObjId);
1724 CryptMemFree(info->ContentEncryptionAlgorithm.Parameters.pbData);
1725 if (info->rgCmsRecipients)
1726 {
1727 DWORD i;
1728
1729 for (i = 0; i < info->cRecipients; ++i)
1730 {
1731 CMSG_KEY_TRANS_RECIPIENT_ENCODE_INFO *encodeInfo =
1732 info->rgCmsRecipients[i].u.pKeyTrans;
1733
1734 CryptMemFree(encodeInfo->KeyEncryptionAlgorithm.pszObjId);
1735 CryptMemFree(encodeInfo->KeyEncryptionAlgorithm.Parameters.pbData);
1736 CryptMemFree(encodeInfo->RecipientPublicKey.pbData);
1737 CryptMemFree(
1738 encodeInfo->RecipientId.u.IssuerSerialNumber.Issuer.pbData);
1739 CryptMemFree(
1740 encodeInfo->RecipientId.u.IssuerSerialNumber.SerialNumber.pbData);
1741 CryptMemFree(encodeInfo);
1742 }
1743 CryptMemFree(info->rgCmsRecipients);
1744 }
1745 }
1746
1747 static BOOL CRecipientInfo_Construct(CMSG_KEY_TRANS_RECIPIENT_INFO *info,
1748 const CERT_INFO *cert, CRYPT_DATA_BLOB *key)
1749 {
1750 BOOL ret;
1751
1752 info->dwVersion = CMSG_KEY_TRANS_PKCS_1_5_VERSION;
1753 info->RecipientId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
1754 ret = CRYPT_ConstructBlob(&info->RecipientId.u.IssuerSerialNumber.Issuer,
1755 &cert->Issuer);
1756 if (ret)
1757 ret = CRYPT_ConstructBlob(
1758 &info->RecipientId.u.IssuerSerialNumber.SerialNumber,
1759 &cert->SerialNumber);
1760 if (ret)
1761 ret = CRYPT_ConstructAlgorithmId(&info->KeyEncryptionAlgorithm,
1762 &cert->SubjectPublicKeyInfo.Algorithm);
1763 info->EncryptedKey.cbData = key->cbData;
1764 info->EncryptedKey.pbData = key->pbData;
1765 return ret;
1766 }
1767
1768 static void CRecipientInfo_Free(CMSG_KEY_TRANS_RECIPIENT_INFO *info)
1769 {
1770 CryptMemFree(info->RecipientId.u.IssuerSerialNumber.Issuer.pbData);
1771 CryptMemFree(info->RecipientId.u.IssuerSerialNumber.SerialNumber.pbData);
1772 CryptMemFree(info->KeyEncryptionAlgorithm.pszObjId);
1773 CryptMemFree(info->KeyEncryptionAlgorithm.Parameters.pbData);
1774 CryptMemFree(info->EncryptedKey.pbData);
1775 }
1776
1777 static void CEnvelopedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
1778 {
1779 CEnvelopedEncodeMsg *msg = hCryptMsg;
1780
1781 CryptMemFree(msg->algo.pszObjId);
1782 CryptMemFree(msg->algo.Parameters.pbData);
1783 if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1784 CryptReleaseContext(msg->prov, 0);
1785 CryptDestroyKey(msg->key);
1786 if (msg->recipientInfo)
1787 {
1788 DWORD i;
1789
1790 for (i = 0; i < msg->cRecipientInfo; ++i)
1791 CRecipientInfo_Free(&msg->recipientInfo[i]);
1792 CryptMemFree(msg->recipientInfo);
1793 }
1794 CryptMemFree(msg->data.pbData);
1795 }
1796
1797 static BOOL CEnvelopedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1798 DWORD dwIndex, void *pvData, DWORD *pcbData)
1799 {
1800 CEnvelopedEncodeMsg *msg = hCryptMsg;
1801 BOOL ret = FALSE;
1802
1803 switch (dwParamType)
1804 {
1805 case CMSG_BARE_CONTENT_PARAM:
1806 if (msg->base.streamed)
1807 SetLastError(E_INVALIDARG);
1808 else
1809 {
1810 char oid_rsa_data[] = szOID_RSA_data;
1811 CRYPT_ENVELOPED_DATA envelopedData = {
1812 CMSG_ENVELOPED_DATA_PKCS_1_5_VERSION, msg->cRecipientInfo,
1813 msg->recipientInfo, { oid_rsa_data, {
1814 msg->algo.pszObjId,
1815 { msg->algo.Parameters.cbData, msg->algo.Parameters.pbData }
1816 },
1817 { msg->data.cbData, msg->data.pbData }
1818 }
1819 };
1820
1821 ret = CRYPT_AsnEncodePKCSEnvelopedData(&envelopedData, pvData,
1822 pcbData);
1823 }
1824 break;
1825 case CMSG_CONTENT_PARAM:
1826 {
1827 CRYPT_CONTENT_INFO info;
1828
1829 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
1830 &info.Content.cbData);
1831 if (ret)
1832 {
1833 info.Content.pbData = CryptMemAlloc(info.Content.cbData);
1834 if (info.Content.pbData)
1835 {
1836 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
1837 info.Content.pbData, &info.Content.cbData);
1838 if (ret)
1839 {
1840 char oid_rsa_enveloped[] = szOID_RSA_envelopedData;
1841
1842 info.pszObjId = oid_rsa_enveloped;
1843 ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
1844 PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
1845 }
1846 CryptMemFree(info.Content.pbData);
1847 }
1848 else
1849 ret = FALSE;
1850 }
1851 break;
1852 }
1853 default:
1854 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1855 }
1856 return ret;
1857 }
1858
1859 static BOOL CEnvelopedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1860 DWORD cbData, BOOL fFinal)
1861 {
1862 CEnvelopedEncodeMsg *msg = hCryptMsg;
1863 BOOL ret = FALSE;
1864
1865 if (msg->base.state == MsgStateFinalized)
1866 SetLastError(CRYPT_E_MSG_ERROR);
1867 else if (msg->base.streamed)
1868 {
1869 FIXME("streamed stub\n");
1870 msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
1871 ret = TRUE;
1872 }
1873 else
1874 {
1875 if (!fFinal)
1876 {
1877 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1878 SetLastError(E_INVALIDARG);
1879 else
1880 SetLastError(CRYPT_E_MSG_ERROR);
1881 }
1882 else
1883 {
1884 if (cbData)
1885 {
1886 DWORD dataLen = cbData;
1887
1888 msg->data.cbData = cbData;
1889 msg->data.pbData = CryptMemAlloc(cbData);
1890 if (msg->data.pbData)
1891 {
1892 memcpy(msg->data.pbData, pbData, cbData);
1893 ret = CryptEncrypt(msg->key, 0, TRUE, 0, msg->data.pbData,
1894 &dataLen, msg->data.cbData);
1895 msg->data.cbData = dataLen;
1896 if (dataLen > cbData)
1897 {
1898 msg->data.pbData = CryptMemRealloc(msg->data.pbData,
1899 dataLen);
1900 if (msg->data.pbData)
1901 {
1902 dataLen = cbData;
1903 ret = CryptEncrypt(msg->key, 0, TRUE, 0,
1904 msg->data.pbData, &dataLen, msg->data.cbData);
1905 }
1906 else
1907 ret = FALSE;
1908 }
1909 if (!ret)
1910 CryptMemFree(msg->data.pbData);
1911 }
1912 else
1913 ret = FALSE;
1914 if (!ret)
1915 {
1916 msg->data.cbData = 0;
1917 msg->data.pbData = NULL;
1918 }
1919 }
1920 else
1921 ret = TRUE;
1922 msg->base.state = MsgStateFinalized;
1923 }
1924 }
1925 return ret;
1926 }
1927
1928 static HCRYPTMSG CEnvelopedEncodeMsg_Open(DWORD dwFlags,
1929 const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
1930 PCMSG_STREAM_INFO pStreamInfo)
1931 {
1932 CEnvelopedEncodeMsg *msg;
1933 const CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
1934 HCRYPTPROV prov;
1935 ALG_ID algID;
1936
1937 if (info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO) &&
1938 info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
1939 {
1940 SetLastError(E_INVALIDARG);
1941 return NULL;
1942 }
1943 if (info->cbSize == sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
1944 FIXME("CMS fields unsupported\n");
1945 if (!(algID = CertOIDToAlgId(info->ContentEncryptionAlgorithm.pszObjId)))
1946 {
1947 SetLastError(CRYPT_E_UNKNOWN_ALGO);
1948 return NULL;
1949 }
1950 if (info->cRecipients && !info->rgpRecipientCert)
1951 {
1952 SetLastError(E_INVALIDARG);
1953 return NULL;
1954 }
1955 if (info->hCryptProv)
1956 prov = info->hCryptProv;
1957 else
1958 {
1959 prov = CRYPT_GetDefaultProvider();
1960 dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
1961 }
1962 msg = CryptMemAlloc(sizeof(CEnvelopedEncodeMsg));
1963 if (msg)
1964 {
1965 CRYPT_DATA_BLOB encryptedKey = { 0, NULL };
1966 CMSG_CONTENT_ENCRYPT_INFO encryptInfo;
1967 BOOL ret;
1968 DWORD i;
1969
1970 CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1971 CEnvelopedEncodeMsg_Close, CEnvelopedEncodeMsg_GetParam,
1972 CEnvelopedEncodeMsg_Update, CRYPT_DefaultMsgControl);
1973 ret = CRYPT_ConstructAlgorithmId(&msg->algo,
1974 &info->ContentEncryptionAlgorithm);
1975 msg->prov = prov;
1976 msg->data.cbData = 0;
1977 msg->data.pbData = NULL;
1978 msg->cRecipientInfo = info->cRecipients;
1979 msg->recipientInfo = CryptMemAlloc(info->cRecipients *
1980 sizeof(CMSG_KEY_TRANS_RECIPIENT_INFO));
1981 if (!msg->recipientInfo)
1982 ret = FALSE;
1983 memset(&encryptInfo, 0, sizeof(encryptInfo));
1984 if (ret)
1985 {
1986 ret = CContentEncryptInfo_Construct(&encryptInfo, info, prov);
1987 if (ret)
1988 {
1989 ret = CRYPT_GenKey(&encryptInfo, algID);
1990 if (ret)
1991 msg->key = encryptInfo.hContentEncryptKey;
1992 }
1993 }
1994 for (i = 0; ret && i < msg->cRecipientInfo; ++i)
1995 {
1996 ret = CRYPT_ExportEncryptedKey(&encryptInfo, i, &encryptedKey);
1997 if (ret)
1998 ret = CRecipientInfo_Construct(&msg->recipientInfo[i],
1999 info->rgpRecipientCert[i], &encryptedKey);
2000 }
2001 CContentEncryptInfo_Free(&encryptInfo);
2002 if (!ret)
2003 {
2004 CryptMsgClose(msg);
2005 msg = NULL;
2006 }
2007 }
2008 if (!msg && (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
2009 CryptReleaseContext(prov, 0);
2010 return msg;
2011 }
2012
2013 HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
2014 DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
2015 PCMSG_STREAM_INFO pStreamInfo)
2016 {
2017 HCRYPTMSG msg = NULL;
2018
2019 TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
2020 dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
2021
2022 if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
2023 {
2024 SetLastError(E_INVALIDARG);
2025 return NULL;
2026 }
2027 switch (dwMsgType)
2028 {
2029 case CMSG_DATA:
2030 msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
2031 pszInnerContentObjID, pStreamInfo);
2032 break;
2033 case CMSG_HASHED:
2034 msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
2035 pszInnerContentObjID, pStreamInfo);
2036 break;
2037 case CMSG_SIGNED:
2038 msg = CSignedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
2039 pszInnerContentObjID, pStreamInfo);
2040 break;
2041 case CMSG_ENVELOPED:
2042 msg = CEnvelopedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
2043 pszInnerContentObjID, pStreamInfo);
2044 break;
2045 case CMSG_SIGNED_AND_ENVELOPED:
2046 case CMSG_ENCRYPTED:
2047 /* defined but invalid, fall through */
2048 default:
2049 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2050 }
2051 return msg;
2052 }
2053
2054 typedef struct _CEnvelopedDecodeMsg
2055 {
2056 CRYPT_ENVELOPED_DATA *data;
2057 HCRYPTPROV crypt_prov;
2058 CRYPT_DATA_BLOB content;
2059 BOOL decrypted;
2060 } CEnvelopedDecodeMsg;
2061
2062 typedef struct _CDecodeMsg
2063 {
2064 CryptMsgBase base;
2065 DWORD type;
2066 HCRYPTPROV crypt_prov;
2067 union {
2068 HCRYPTHASH hash;
2069 CSignedMsgData signed_data;
2070 CEnvelopedDecodeMsg enveloped_data;
2071 } u;
2072 CRYPT_DATA_BLOB msg_data;
2073 CRYPT_DATA_BLOB detached_data;
2074 CONTEXT_PROPERTY_LIST *properties;
2075 } CDecodeMsg;
2076
2077 static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
2078 {
2079 CDecodeMsg *msg = hCryptMsg;
2080
2081 if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
2082 CryptReleaseContext(msg->crypt_prov, 0);
2083 switch (msg->type)
2084 {
2085 case CMSG_HASHED:
2086 if (msg->u.hash)
2087 CryptDestroyHash(msg->u.hash);
2088 break;
2089 case CMSG_ENVELOPED:
2090 if (msg->u.enveloped_data.crypt_prov)
2091 CryptReleaseContext(msg->u.enveloped_data.crypt_prov, 0);
2092 LocalFree(msg->u.enveloped_data.data);
2093 CryptMemFree(msg->u.enveloped_data.content.pbData);
2094 break;
2095 case CMSG_SIGNED:
2096 if (msg->u.signed_data.info)
2097 {
2098 LocalFree(msg->u.signed_data.info);
2099 CSignedMsgData_CloseHandles(&msg->u.signed_data);
2100 }
2101 break;
2102 }
2103 CryptMemFree(msg->msg_data.pbData);
2104 CryptMemFree(msg->detached_data.pbData);
2105 ContextPropertyList_Free(msg->properties);
2106 }
2107
2108 static BOOL CDecodeMsg_CopyData(CRYPT_DATA_BLOB *blob, const BYTE *pbData,
2109 DWORD cbData)
2110 {
2111 BOOL ret = TRUE;
2112
2113 if (cbData)
2114 {
2115 if (blob->cbData)
2116 blob->pbData = CryptMemRealloc(blob->pbData,
2117 blob->cbData + cbData);
2118 else
2119 blob->pbData = CryptMemAlloc(cbData);
2120 if (blob->pbData)
2121 {
2122 memcpy(blob->pbData + blob->cbData, pbData, cbData);
2123 blob->cbData += cbData;
2124 }
2125 else
2126 ret = FALSE;
2127 }
2128 return ret;
2129 }
2130
2131 static BOOL CDecodeMsg_DecodeDataContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob)
2132 {
2133 BOOL ret;
2134 CRYPT_DATA_BLOB *data;
2135 DWORD size;
2136
2137 ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
2138 blob->pbData, blob->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &data, &size);
2139 if (ret)
2140 {
2141 ret = ContextPropertyList_SetProperty(msg->properties,
2142 CMSG_CONTENT_PARAM, data->pbData, data->cbData);
2143 LocalFree(data);
2144 }
2145 return ret;
2146 }
2147
2148 static void CDecodeMsg_SaveAlgorithmID(CDecodeMsg *msg, DWORD param,
2149 const CRYPT_ALGORITHM_IDENTIFIER *id)
2150 {
2151 static const BYTE nullParams[] = { ASN_NULL, 0 };
2152 CRYPT_ALGORITHM_IDENTIFIER *copy;
2153 DWORD len = sizeof(CRYPT_ALGORITHM_IDENTIFIER);
2154
2155 /* Linearize algorithm id */
2156 len += strlen(id->pszObjId) + 1;
2157 len += id->Parameters.cbData;
2158 copy = CryptMemAlloc(len);
2159 if (copy)
2160 {
2161 copy->pszObjId =
2162 (LPSTR)((BYTE *)copy + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
2163 strcpy(copy->pszObjId, id->pszObjId);
2164 copy->Parameters.pbData = (BYTE *)copy->pszObjId + strlen(id->pszObjId)
2165 + 1;
2166 /* Trick: omit NULL parameters */
2167 if (id->Parameters.cbData == sizeof(nullParams) &&
2168 !memcmp(id->Parameters.pbData, nullParams, sizeof(nullParams)))
2169 {
2170 copy->Parameters.cbData = 0;
2171 len -= sizeof(nullParams);
2172 }
2173 else
2174 copy->Parameters.cbData = id->Parameters.cbData;
2175 if (copy->Parameters.cbData)
2176 memcpy(copy->Parameters.pbData, id->Parameters.pbData,
2177 id->Parameters.cbData);
2178 ContextPropertyList_SetProperty(msg->properties, param, (BYTE *)copy,
2179 len);
2180 CryptMemFree(copy);
2181 }
2182 }
2183
2184 static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
2185 {
2186 id->pszObjId = (LPSTR)((BYTE *)id + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
2187 id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
2188 }
2189
2190 static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
2191 const CRYPT_DER_BLOB *blob)
2192 {
2193 BOOL ret;
2194 CRYPT_DIGESTED_DATA *digestedData;
2195 DWORD size;
2196
2197 ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
2198 CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
2199 &size);
2200 if (ret)
2201 {
2202 ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
2203 (const BYTE *)&digestedData->version, sizeof(digestedData->version));
2204 CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
2205 &digestedData->DigestAlgorithm);
2206 ContextPropertyList_SetProperty(msg->properties,
2207 CMSG_INNER_CONTENT_TYPE_PARAM,
2208 (const BYTE *)digestedData->ContentInfo.pszObjId,
2209 digestedData->ContentInfo.pszObjId ?
2210 strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
2211 if (!(msg->base.open_flags & CMSG_DETACHED_FLAG))
2212 {
2213 if (digestedData->ContentInfo.Content.cbData)
2214 CDecodeMsg_DecodeDataContent(msg,
2215 &digestedData->ContentInfo.Content);
2216 else
2217 ContextPropertyList_SetProperty(msg->properties,
2218 CMSG_CONTENT_PARAM, NULL, 0);
2219 }
2220 ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
2221 digestedData->hash.pbData, digestedData->hash.cbData);
2222 LocalFree(digestedData);
2223 }
2224 return ret;
2225 }
2226
2227 static BOOL CDecodeMsg_DecodeEnvelopedContent(CDecodeMsg *msg,
2228 const CRYPT_DER_BLOB *blob)
2229 {
2230 BOOL ret;
2231 CRYPT_ENVELOPED_DATA *envelopedData;
2232 DWORD size;
2233
2234 ret = CRYPT_AsnDecodePKCSEnvelopedData(blob->pbData, blob->cbData,
2235 CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_ENVELOPED_DATA *)&envelopedData,
2236 &size);
2237 if (ret)
2238 msg->u.enveloped_data.data = envelopedData;
2239 return ret;
2240 }
2241
2242 static BOOL CDecodeMsg_DecodeSignedContent(CDecodeMsg *msg,
2243 const CRYPT_DER_BLOB *blob)
2244 {
2245 BOOL ret;
2246 CRYPT_SIGNED_INFO *signedInfo;
2247 DWORD size;
2248
2249 ret = CRYPT_AsnDecodeCMSSignedInfo(blob->pbData, blob->cbData,
2250 CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_SIGNED_INFO *)&signedInfo,
2251 &size);
2252 if (ret)
2253 msg->u.signed_data.info = signedInfo;
2254 return ret;
2255 }
2256
2257 /* Decodes the content in blob as the type given, and updates the value
2258 * (type, parameters, etc.) of msg based on what blob contains.
2259 * It doesn't just use msg's type, to allow a recursive call from an implicitly
2260 * typed message once the outer content info has been decoded.
2261 */
2262 static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob,
2263 DWORD type)
2264 {
2265 BOOL ret;
2266
2267 switch (type)
2268 {
2269 case CMSG_DATA:
2270 if ((ret = CDecodeMsg_DecodeDataContent(msg, blob)))
2271 msg->type = CMSG_DATA;
2272 break;
2273 case CMSG_HASHED:
2274 if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
2275 msg->type = CMSG_HASHED;
2276 break;
2277 case CMSG_ENVELOPED:
2278 if ((ret = CDecodeMsg_DecodeEnvelopedContent(msg, blob)))
2279 msg->type = CMSG_ENVELOPED;
2280 break;
2281 case CMSG_SIGNED:
2282 if ((ret = CDecodeMsg_DecodeSignedContent(msg, blob)))
2283 msg->type = CMSG_SIGNED;
2284 break;
2285 default:
2286 {
2287 CRYPT_CONTENT_INFO *info;
2288 DWORD size;
2289
2290 ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
2291 msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,
2292 NULL, &info, &size);
2293 if (ret)
2294 {
2295 if (!strcmp(info->pszObjId, szOID_RSA_data))
2296 ret = CDecodeMsg_DecodeContent(msg, &info->Content, CMSG_DATA);
2297 else if (!strcmp(info->pszObjId, szOID_RSA_digestedData))
2298 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
2299 CMSG_HASHED);
2300 else if (!strcmp(info->pszObjId, szOID_RSA_envelopedData))
2301 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
2302 CMSG_ENVELOPED);
2303 else if (!strcmp(info->pszObjId, szOID_RSA_signedData))
2304 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
2305 CMSG_SIGNED);
2306 else
2307 {
2308 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2309 ret = FALSE;
2310 }
2311 LocalFree(info);
2312 }
2313 }
2314 }
2315 return ret;
2316 }
2317
2318 static BOOL CDecodeMsg_FinalizeHashedContent(CDecodeMsg *msg,
2319 CRYPT_DER_BLOB *blob)
2320 {
2321 CRYPT_ALGORITHM_IDENTIFIER *hashAlgoID = NULL;
2322 DWORD size = 0;
2323 ALG_ID algID = 0;
2324 BOOL ret;
2325
2326 CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, NULL, &size);
2327 hashAlgoID = CryptMemAlloc(size);
2328 ret = CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, hashAlgoID,
2329 &size);
2330 if (ret)
2331 algID = CertOIDToAlgId(hashAlgoID->pszObjId);
2332 ret = CryptCreateHash(msg->crypt_prov, algID, 0, 0, &msg->u.hash);
2333 if (ret)
2334 {
2335 CRYPT_DATA_BLOB content;
2336
2337 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2338 {
2339 /* Unlike for non-detached messages, the data were never stored as
2340 * the content param, but were saved in msg->detached_data instead.
2341 */
2342 content.pbData = msg->detached_data.pbData;
2343 content.cbData = msg->detached_data.cbData;
2344 }
2345 else
2346 ret = ContextPropertyList_FindProperty(msg->properties,
2347 CMSG_CONTENT_PARAM, &content);
2348 if (ret)
2349 ret = CryptHashData(msg->u.hash, content.pbData, content.cbData, 0);
2350 }
2351 CryptMemFree(hashAlgoID);
2352 return ret;
2353 }
2354
2355 static BOOL CDecodeMsg_FinalizeEnvelopedContent(CDecodeMsg *msg,
2356 CRYPT_DER_BLOB *blob)
2357 {
2358 CRYPT_DATA_BLOB *content;
2359
2360 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2361 content = &msg->detached_data;
2362 else
2363 content =
2364 &msg->u.enveloped_data.data->encryptedContentInfo.encryptedContent;
2365
2366 return CRYPT_ConstructBlob(&msg->u.enveloped_data.content, content);
2367 }
2368
2369 static BOOL CDecodeMsg_FinalizeSignedContent(CDecodeMsg *msg,
2370 CRYPT_DER_BLOB *blob)
2371 {
2372 BOOL ret;
2373 DWORD i, size;
2374
2375 ret = CSignedMsgData_AllocateHandles(&msg->u.signed_data);
2376 for (i = 0; ret && i < msg->u.signed_data.info->cSignerInfo; i++)
2377 ret = CSignedMsgData_ConstructSignerHandles(&msg->u.signed_data, i,
2378 msg->crypt_prov);
2379 if (ret)
2380 {
2381 CRYPT_DATA_BLOB *content;
2382
2383 /* Now that we have all the content, update the hash handles with
2384 * it. If the message is a detached message, the content is stored
2385 * in msg->detached_data rather than in the signed message's
2386 * content.
2387 */
2388 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2389 content = &msg->detached_data;
2390 else
2391 content = &msg->u.signed_data.info->content.Content;
2392 if (content->cbData)
2393 {
2394 /* If the message is not detached, have to decode the message's
2395 * content if the type is szOID_RSA_data.
2396 */
2397 if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) &&
2398 !strcmp(msg->u.signed_data.info->content.pszObjId,
2399 szOID_RSA_data))
2400 {
2401 CRYPT_DATA_BLOB *rsa_blob;
2402
2403 ret = CryptDecodeObjectEx(X509_ASN_ENCODING,
2404 X509_OCTET_STRING, content->pbData, content->cbData,
2405 CRYPT_DECODE_ALLOC_FLAG, NULL, &rsa_blob, &size);
2406 if (ret)
2407 {
2408 ret = CSignedMsgData_Update(&msg->u.signed_data,
2409 rsa_blob->pbData, rsa_blob->cbData, TRUE, Verify);
2410 LocalFree(rsa_blob);
2411 }
2412 }
2413 else
2414 ret = CSignedMsgData_Update(&msg->u.signed_data,
2415 content->pbData, content->cbData, TRUE, Verify);
2416 }
2417 }
2418 return ret;
2419 }
2420
2421 static BOOL CDecodeMsg_FinalizeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob)
2422 {
2423 BOOL ret = FALSE;
2424
2425 switch (msg->type)
2426 {
2427 case CMSG_HASHED:
2428 ret = CDecodeMsg_FinalizeHashedContent(msg, blob);
2429 break;
2430 case CMSG_ENVELOPED:
2431 ret = CDecodeMsg_FinalizeEnvelopedContent(msg, blob);
2432 break;
2433 case CMSG_SIGNED:
2434 ret = CDecodeMsg_FinalizeSignedContent(msg, blob);
2435 break;
2436 default:
2437 ret = TRUE;
2438 }
2439 return ret;
2440 }
2441
2442 static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
2443 DWORD cbData, BOOL fFinal)
2444 {
2445 CDecodeMsg *msg = hCryptMsg;
2446 BOOL ret = FALSE;
2447
2448 TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
2449
2450 if (msg->base.state == MsgStateFinalized)
2451 SetLastError(CRYPT_E_MSG_ERROR);
2452 else if (msg->base.streamed)
2453 {
2454 FIXME("(%p, %p, %d, %d): streamed update stub\n", hCryptMsg, pbData,
2455 cbData, fFinal);
2456 switch (msg->base.state)
2457 {
2458 case MsgStateInit:
2459 ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
2460 if (fFinal)
2461 {
2462 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2463 msg->base.state = MsgStateDataFinalized;
2464 else
2465 msg->base.state = MsgStateFinalized;
2466 }
2467 else
2468 msg->base.state = MsgStateUpdated;
2469 break;
2470 case MsgStateUpdated:
2471 ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
2472 if (fFinal)
2473 {
2474 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2475 msg->base.state = MsgStateDataFinalized;
2476 else
2477 msg->base.state = MsgStateFinalized;
2478 }
2479 break;
2480 case MsgStateDataFinalized:
2481 ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
2482 if (fFinal)
2483 msg->base.state = MsgStateFinalized;
2484 break;
2485 default:
2486 SetLastError(CRYPT_E_MSG_ERROR);
2487 break;
2488 }
2489 }
2490 else
2491 {
2492 if (!fFinal)
2493 SetLastError(CRYPT_E_MSG_ERROR);
2494 else
2495 {
2496 switch (msg->base.state)
2497 {
2498 case MsgStateInit:
2499 ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
2500 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2501 msg->base.state = MsgStateDataFinalized;
2502 else
2503 msg->base.state = MsgStateFinalized;
2504 break;
2505 case MsgStateDataFinalized:
2506 ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
2507 msg->base.state = MsgStateFinalized;
2508 break;
2509 default:
2510 SetLastError(CRYPT_E_MSG_ERROR);
2511 }
2512 }
2513 }
2514 if (ret && fFinal &&
2515 ((msg->base.open_flags & CMSG_DETACHED_FLAG && msg->base.state ==
2516 MsgStateDataFinalized) ||
2517 (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->base.state ==
2518 MsgStateFinalized)))
2519 ret = CDecodeMsg_DecodeContent(msg, &msg->msg_data, msg->type);
2520 if (ret && msg->base.state == MsgStateFinalized)
2521 ret = CDecodeMsg_FinalizeContent(msg, &msg->msg_data);
2522 return ret;
2523 }
2524
2525 static BOOL CDecodeHashMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2526 DWORD dwIndex, void *pvData, DWORD *pcbData)
2527 {
2528 BOOL ret = FALSE;
2529
2530 switch (dwParamType)
2531 {
2532 case CMSG_TYPE_PARAM:
2533 ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2534 break;
2535 case CMSG_HASH_ALGORITHM_PARAM:
2536 {
2537 CRYPT_DATA_BLOB blob;
2538
2539 ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2540 &blob);
2541 if (ret)
2542 {
2543 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
2544 if (ret && pvData)
2545 CRYPT_FixUpAlgorithmID(pvData);
2546 }
2547 else
2548 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2549 break;
2550 }
2551 case CMSG_COMPUTED_HASH_PARAM:
2552 ret = CryptGetHashParam(msg->u.hash, HP_HASHVAL, pvData, pcbData, 0);
2553 break;
2554 default:
2555 {
2556 CRYPT_DATA_BLOB blob;
2557
2558 ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2559 &blob);
2560 if (ret)
2561 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
2562 else
2563 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2564 }
2565 }
2566 return ret;
2567 }
2568
2569 /* nextData is an in/out parameter - on input it's the memory location in
2570 * which a copy of in's data should be made, and on output it's the memory
2571 * location immediately after out's copy of in's data.
2572 */
2573 static inline void CRYPT_CopyBlob(CRYPT_DATA_BLOB *out,
2574 const CRYPT_DATA_BLOB *in, LPBYTE *nextData)
2575 {
2576 out->cbData = in->cbData;
2577 if (in->cbData)
2578 {
2579 out->pbData = *nextData;
2580 memcpy(out->pbData, in->pbData, in->cbData);
2581 *nextData += in->cbData;
2582 }
2583 }
2584
2585 static inline void CRYPT_CopyAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
2586 const CRYPT_ALGORITHM_IDENTIFIER *in, LPBYTE *nextData)
2587 {
2588 if (in->pszObjId)
2589 {
2590 out->pszObjId = (LPSTR)*nextData;
2591 strcpy(out->pszObjId, in->pszObjId);
2592 *nextData += strlen(out->pszObjId) + 1;
2593 }
2594 CRYPT_CopyBlob(&out->Parameters, &in->Parameters, nextData);
2595 }
2596
2597 static inline void CRYPT_CopyAttributes(CRYPT_ATTRIBUTES *out,
2598 const CRYPT_ATTRIBUTES *in, LPBYTE *nextData)
2599 {
2600 out->cAttr = in->cAttr;
2601 if (in->cAttr)
2602 {
2603 DWORD i;
2604
2605 *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2606 out->rgAttr = (CRYPT_ATTRIBUTE *)*nextData;
2607 *nextData += in->cAttr * sizeof(CRYPT_ATTRIBUTE);
2608 for (i = 0; i < in->cAttr; i++)
2609 {
2610 if (in->rgAttr[i].pszObjId)
2611 {
2612 out->rgAttr[i].pszObjId = (LPSTR)*nextData;
2613 strcpy(out->rgAttr[i].pszObjId, in->rgAttr[i].pszObjId);
2614 *nextData += strlen(in->rgAttr[i].pszObjId) + 1;
2615 }
2616 if (in->rgAttr[i].cValue)
2617 {
2618 DWORD j;
2619
2620 out->rgAttr[i].cValue = in->rgAttr[i].cValue;
2621 *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2622 out->rgAttr[i].rgValue = (PCRYPT_DATA_BLOB)*nextData;
2623 *nextData += in->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2624 for (j = 0; j < in->rgAttr[i].cValue; j++)
2625 CRYPT_CopyBlob(&out->rgAttr[i].rgValue[j],
2626 &in->rgAttr[i].rgValue[j], nextData);
2627 }
2628 }
2629 }
2630 }
2631
2632 static DWORD CRYPT_SizeOfAttributes(const CRYPT_ATTRIBUTES *attr)
2633 {
2634 DWORD size = attr->cAttr * sizeof(CRYPT_ATTRIBUTE), i, j;
2635
2636 for (i = 0; i < attr->cAttr; i++)
2637 {
2638 if (attr->rgAttr[i].pszObjId)
2639 size += strlen(attr->rgAttr[i].pszObjId) + 1;
2640 /* align pointer */
2641 size = ALIGN_DWORD_PTR(size);
2642 size += attr->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2643 for (j = 0; j < attr->rgAttr[i].cValue; j++)
2644 size += attr->rgAttr[i].rgValue[j].cbData;
2645 }
2646 /* align pointer again to be conservative */
2647 size = ALIGN_DWORD_PTR(size);
2648 return size;
2649 }
2650
2651 static DWORD CRYPT_SizeOfKeyIdAsIssuerAndSerial(const CRYPT_DATA_BLOB *keyId)
2652 {
2653 static char oid_key_rdn[] = szOID_KEYID_RDN;
2654 DWORD size = 0;
2655 CERT_RDN_ATTR attr;
2656 CERT_RDN rdn = { 1, &attr };
2657 CERT_NAME_INFO name = { 1, &rdn };
2658
2659 attr.pszObjId = oid_key_rdn;
2660 attr.dwValueType = CERT_RDN_OCTET_STRING;
2661 attr.Value.cbData = keyId->cbData;
2662 attr.Value.pbData = keyId->pbData;
2663 if (CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, NULL, &size))
2664 size++; /* Only include size of special zero serial number on success */
2665 return size;
2666 }
2667
2668 static BOOL CRYPT_CopyKeyIdAsIssuerAndSerial(CERT_NAME_BLOB *issuer,
2669 CRYPT_INTEGER_BLOB *serialNumber, const CRYPT_DATA_BLOB *keyId, DWORD encodedLen,
2670 LPBYTE *nextData)
2671 {
2672 static char oid_key_rdn[] = szOID_KEYID_RDN;
2673 CERT_RDN_ATTR attr;
2674 CERT_RDN rdn = { 1, &attr };
2675 CERT_NAME_INFO name = { 1, &rdn };
2676 BOOL ret;
2677
2678 /* Encode special zero serial number */
2679 serialNumber->cbData = 1;
2680 serialNumber->pbData = *nextData;
2681 **nextData = 0;
2682 (*nextData)++;
2683 /* Encode issuer */
2684 issuer->pbData = *nextData;
2685 attr.pszObjId = oid_key_rdn;
2686 attr.dwValueType = CERT_RDN_OCTET_STRING;
2687 attr.Value.cbData = keyId->cbData;
2688 attr.Value.pbData = keyId->pbData;
2689 ret = CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, *nextData,
2690 &encodedLen);
2691 if (ret)
2692 {
2693 *nextData += encodedLen;
2694 issuer->cbData = encodedLen;
2695 }
2696 return ret;
2697 }
2698
2699 static BOOL CRYPT_CopySignerInfo(void *pvData, DWORD *pcbData,
2700 const CMSG_CMS_SIGNER_INFO *in)
2701 {
2702 DWORD size = sizeof(CMSG_SIGNER_INFO), rdnSize = 0;
2703 BOOL ret;
2704
2705 TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2706
2707 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2708 {
2709 size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2710 size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2711 }
2712 else
2713 {
2714 rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2715 size += rdnSize;
2716 }
2717 if (in->HashAlgorithm.pszObjId)
2718 size += strlen(in->HashAlgorithm.pszObjId) + 1;
2719 size += in->HashAlgorithm.Parameters.cbData;
2720 if (in->HashEncryptionAlgorithm.pszObjId)
2721 size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2722 size += in->HashEncryptionAlgorithm.Parameters.cbData;
2723 size += in->EncryptedHash.cbData;
2724 /* align pointer */
2725 size = ALIGN_DWORD_PTR(size);
2726 size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2727 size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2728 if (!pvData)
2729 {
2730 *pcbData = size;
2731 ret = TRUE;
2732 }
2733 else if (*pcbData < size)
2734 {
2735 *pcbData = size;
2736 SetLastError(ERROR_MORE_DATA);
2737 ret = FALSE;
2738 }
2739 else
2740 {
2741 LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_SIGNER_INFO);
2742 CMSG_SIGNER_INFO *out = pvData;
2743
2744 ret = TRUE;
2745 out->dwVersion = in->dwVersion;
2746 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2747 {
2748 CRYPT_CopyBlob(&out->Issuer,
2749 &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2750 CRYPT_CopyBlob(&out->SerialNumber,
2751 &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2752 }
2753 else
2754 ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2755 &in->SignerId.u.KeyId, rdnSize, &nextData);
2756 if (ret)
2757 {
2758 CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2759 &nextData);
2760 CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2761 &in->HashEncryptionAlgorithm, &nextData);
2762 CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2763 nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2764 CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2765 CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2766 }
2767 }
2768 TRACE("returning %d\n", ret);
2769 return ret;
2770 }
2771
2772 static BOOL CRYPT_CopyCMSSignerInfo(void *pvData, DWORD *pcbData,
2773 const CMSG_CMS_SIGNER_INFO *in)
2774 {
2775 DWORD size = sizeof(CMSG_CMS_SIGNER_INFO);
2776 BOOL ret;
2777
2778 TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2779
2780 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2781 {
2782 size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2783 size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2784 }
2785 else
2786 size += in->SignerId.u.KeyId.cbData;
2787 if (in->HashAlgorithm.pszObjId)
2788 size += strlen(in->HashAlgorithm.pszObjId) + 1;
2789 size += in->HashAlgorithm.Parameters.cbData;
2790 if (in->HashEncryptionAlgorithm.pszObjId)
2791 size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2792 size += in->HashEncryptionAlgorithm.Parameters.cbData;
2793 size += in->EncryptedHash.cbData;
2794 /* align pointer */
2795 size = ALIGN_DWORD_PTR(size);
2796 size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2797 size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2798 if (!pvData)
2799 {
2800 *pcbData = size;
2801 ret = TRUE;
2802 }
2803 else if (*pcbData < size)
2804 {
2805 *pcbData = size;
2806 SetLastError(ERROR_MORE_DATA);
2807 ret = FALSE;
2808 }
2809 else
2810 {
2811 LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_CMS_SIGNER_INFO);
2812 CMSG_CMS_SIGNER_INFO *out = pvData;
2813
2814 out->dwVersion = in->dwVersion;
2815 out->SignerId.dwIdChoice = in->SignerId.dwIdChoice;
2816 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2817 {
2818 CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.Issuer,
2819 &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2820 CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.SerialNumber,
2821 &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2822 }
2823 else
2824 CRYPT_CopyBlob(&out->SignerId.u.KeyId, &in->SignerId.u.KeyId, &nextData);
2825 CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2826 &nextData);
2827 CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2828 &in->HashEncryptionAlgorithm, &nextData);
2829 CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2830 nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2831 CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2832 CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2833 ret = TRUE;
2834 }
2835 TRACE("returning %d\n", ret);
2836 return ret;
2837 }
2838
2839 static BOOL CRYPT_CopySignerCertInfo(void *pvData, DWORD *pcbData,
2840 const CMSG_CMS_SIGNER_INFO *in)
2841 {
2842 DWORD size = sizeof(CERT_INFO), rdnSize = 0;
2843 BOOL ret;
2844
2845 TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2846
2847 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2848 {
2849 size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2850 size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2851 }
2852 else
2853 {
2854 rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2855 size += rdnSize;
2856 }
2857 if (!pvData)
2858 {
2859 *pcbData = size;
2860 ret = TRUE;
2861 }
2862 else if (*pcbData < size)
2863 {
2864 *pcbData = size;
2865 SetLastError(ERROR_MORE_DATA);
2866 ret = FALSE;
2867 }
2868 else
2869 {
2870 LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
2871 CERT_INFO *out = pvData;
2872
2873 memset(out, 0, sizeof(CERT_INFO));
2874 if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2875 {
2876 CRYPT_CopyBlob(&out->Issuer,
2877 &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2878 CRYPT_CopyBlob(&out->SerialNumber,
2879 &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2880 ret = TRUE;
2881 }
2882 else
2883 ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2884 &in->SignerId.u.KeyId, rdnSize, &nextData);
2885 }
2886 TRACE("returning %d\n", ret);
2887 return ret;
2888 }
2889
2890 static BOOL CRYPT_CopyRecipientInfo(void *pvData, DWORD *pcbData,
2891 const CERT_ISSUER_SERIAL_NUMBER *in)
2892 {
2893 DWORD size = sizeof(CERT_INFO);
2894 BOOL ret;
2895
2896 TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2897
2898 size += in->SerialNumber.cbData;
2899 size += in->Issuer.cbData;
2900 if (!pvData)
2901 {
2902 *pcbData = size;
2903 ret = TRUE;
2904 }
2905 else if (*pcbData < size)
2906 {
2907 *pcbData = size;
2908 SetLastError(ERROR_MORE_DATA);
2909 ret = FALSE;
2910 }
2911 else
2912 {
2913 LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
2914 CERT_INFO *out = pvData;
2915
2916 CRYPT_CopyBlob(&out->SerialNumber, &in->SerialNumber, &nextData);
2917 CRYPT_CopyBlob(&out->Issuer, &in->Issuer, &nextData);
2918 ret = TRUE;
2919 }
2920 TRACE("returning %d\n", ret);
2921 return ret;
2922 }
2923
2924 static BOOL CDecodeEnvelopedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2925 DWORD dwIndex, void *pvData, DWORD *pcbData)
2926 {
2927 BOOL ret = FALSE;
2928
2929 switch (dwParamType)
2930 {
2931 case CMSG_TYPE_PARAM:
2932 ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2933 break;
2934 case CMSG_CONTENT_PARAM:
2935 if (msg->u.enveloped_data.data)
2936 ret = CRYPT_CopyParam(pvData, pcbData,
2937 msg->u.enveloped_data.content.pbData,
2938 msg->u.enveloped_data.content.cbData);
2939 else
2940 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2941 break;
2942 case CMSG_RECIPIENT_COUNT_PARAM:
2943 if (msg->u.enveloped_data.data)
2944 ret = CRYPT_CopyParam(pvData, pcbData,
2945 &msg->u.enveloped_data.data->cRecipientInfo, sizeof(DWORD));
2946 else
2947 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2948 break;
2949 case CMSG_RECIPIENT_INFO_PARAM:
2950 if (msg->u.enveloped_data.data)
2951 {
2952 if (dwIndex < msg->u.enveloped_data.data->cRecipientInfo)
2953 {
2954 PCMSG_KEY_TRANS_RECIPIENT_INFO recipientInfo =
2955 &msg->u.enveloped_data.data->rgRecipientInfo[dwIndex];
2956
2957 ret = CRYPT_CopyRecipientInfo(pvData, pcbData,
2958 &recipientInfo->RecipientId.u.IssuerSerialNumber);
2959 }
2960 else
2961 SetLastError(CRYPT_E_INVALID_INDEX);
2962 }
2963 else
2964 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2965 break;
2966 default:
2967 FIXME("unimplemented for %d\n", dwParamType);
2968 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2969 }
2970 return ret;
2971 }
2972
2973 static BOOL CDecodeSignedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2974 DWORD dwIndex, void *pvData, DWORD *pcbData)
2975 {
2976 BOOL ret = FALSE;
2977
2978 switch (dwParamType)
2979 {
2980 case CMSG_TYPE_PARAM:
2981 ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2982 break;
2983 case CMSG_CONTENT_PARAM:
2984 if (msg->u.signed_data.info)
2985 {
2986 if (!strcmp(msg->u.signed_data.info->content.pszObjId,
2987 szOID_RSA_data))
2988 {
2989 CRYPT_DATA_BLOB *blob;
2990 DWORD size;
2991
2992 ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
2993 msg->u.signed_data.info->content.Content.pbData,
2994 msg->u.signed_data.info->content.Content.cbData,
2995 CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
2996 if (ret)
2997 {
2998 ret = CRYPT_CopyParam(pvData, pcbData, blob->pbData,
2999 blob->cbData);
3000 LocalFree(blob);
3001 }
3002 }
3003 else
3004 ret = CRYPT_CopyParam(pvData, pcbData,
3005 msg->u.signed_data.info->content.Content.pbData,
3006 msg->u.signed_data.info->content.Content.cbData);
3007 }
3008 else
3009 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3010 break;
3011 case CMSG_INNER_CONTENT_TYPE_PARAM:
3012 if (msg->u.signed_data.info)
3013 ret = CRYPT_CopyParam(pvData, pcbData,
3014 msg->u.signed_data.info->content.pszObjId,
3015 strlen(msg->u.signed_data.info->content.pszObjId) + 1);
3016 else
3017 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3018 break;
3019 case CMSG_SIGNER_COUNT_PARAM:
3020 if (msg->u.signed_data.info)
3021 ret = CRYPT_CopyParam(pvData, pcbData,
3022 &msg->u.signed_data.info->cSignerInfo, sizeof(DWORD));
3023 else
3024 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3025 break;
3026 case CMSG_SIGNER_INFO_PARAM:
3027 if (msg->u.signed_data.info)
3028 {
3029 if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
3030 SetLastError(CRYPT_E_INVALID_INDEX);
3031 else
3032 ret = CRYPT_CopySignerInfo(pvData, pcbData,
3033 &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
3034 }
3035 else
3036 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3037 break;
3038 case CMSG_SIGNER_CERT_INFO_PARAM:
3039 if (msg->u.signed_data.info)
3040 {
3041 if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
3042 SetLastError(CRYPT_E_INVALID_INDEX);
3043 else
3044 ret = CRYPT_CopySignerCertInfo(pvData, pcbData,
3045 &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
3046 }
3047 else
3048 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3049 break;
3050 case CMSG_CERT_COUNT_PARAM:
3051 if (msg->u.signed_data.info)
3052 ret = CRYPT_CopyParam(pvData, pcbData,
3053 &msg->u.signed_data.info->cCertEncoded, sizeof(DWORD));
3054 else
3055 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3056 break;
3057 case CMSG_CERT_PARAM:
3058 if (msg->u.signed_data.info)
3059 {
3060 if (dwIndex >= msg->u.signed_data.info->cCertEncoded)
3061 SetLastError(CRYPT_E_INVALID_INDEX);
3062 else
3063 ret = CRYPT_CopyParam(pvData, pcbData,
3064 msg->u.signed_data.info->rgCertEncoded[dwIndex].pbData,
3065 msg->u.signed_data.info->rgCertEncoded[dwIndex].cbData);
3066 }
3067 else
3068 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3069 break;
3070 case CMSG_CRL_COUNT_PARAM:
3071 if (msg->u.signed_data.info)
3072 ret = CRYPT_CopyParam(pvData, pcbData,
3073 &msg->u.signed_data.info->cCrlEncoded, sizeof(DWORD));
3074 else
3075 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3076 break;
3077 case CMSG_CRL_PARAM:
3078 if (msg->u.signed_data.info)
3079 {
3080 if (dwIndex >= msg->u.signed_data.info->cCrlEncoded)
3081 SetLastError(CRYPT_E_INVALID_INDEX);
3082 else
3083 ret = CRYPT_CopyParam(pvData, pcbData,
3084 msg->u.signed_data.info->rgCrlEncoded[dwIndex].pbData,
3085 msg->u.signed_data.info->rgCrlEncoded[dwIndex].cbData);
3086 }
3087 else
3088 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3089 break;
3090 case CMSG_COMPUTED_HASH_PARAM:
3091 if (msg->u.signed_data.info)
3092 {
3093 if (dwIndex >= msg->u.signed_data.cSignerHandle)
3094 SetLastError(CRYPT_E_INVALID_INDEX);
3095 else
3096 ret = CryptGetHashParam(
3097 msg->u.signed_data.signerHandles[dwIndex].contentHash,
3098 HP_HASHVAL, pvData, pcbData, 0);
3099 }
3100 else
3101 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3102 break;
3103 case CMSG_ENCODED_SIGNER:
3104 if (msg->u.signed_data.info)
3105 {
3106 if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
3107 SetLastError(CRYPT_E_INVALID_INDEX);
3108 else
3109 ret = CryptEncodeObjectEx(
3110 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, CMS_SIGNER_INFO,
3111 &msg->u.signed_data.info->rgSignerInfo[dwIndex], 0, NULL,
3112 pvData, pcbData);
3113 }
3114 else
3115 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3116 break;
3117 case CMSG_ATTR_CERT_COUNT_PARAM:
3118 if (msg->u.signed_data.info)
3119 {
3120 DWORD attrCertCount = 0;
3121
3122 ret = CRYPT_CopyParam(pvData, pcbData,
3123 &attrCertCount, sizeof(DWORD));
3124 }
3125 else
3126 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3127 break;
3128 case CMSG_ATTR_CERT_PARAM:
3129 if (msg->u.signed_data.info)
3130 SetLastError(CRYPT_E_INVALID_INDEX);
3131 else
3132 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3133 break;
3134 case CMSG_CMS_SIGNER_INFO_PARAM:
3135 if (msg->u.signed_data.info)
3136 {
3137 if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
3138 SetLastError(CRYPT_E_INVALID_INDEX);
3139 else
3140 ret = CRYPT_CopyCMSSignerInfo(pvData, pcbData,
3141 &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
3142 }
3143 else
3144 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3145 break;
3146 default:
3147 FIXME("unimplemented for %d\n", dwParamType);
3148 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3149 }
3150 return ret;
3151 }
3152
3153 static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
3154 DWORD dwIndex, void *pvData, DWORD *pcbData)
3155 {
3156 CDecodeMsg *msg = hCryptMsg;
3157 BOOL ret = FALSE;
3158
3159 switch (msg->type)
3160 {
3161 case CMSG_HASHED:
3162 ret = CDecodeHashMsg_GetParam(msg, dwParamType, dwIndex, pvData,
3163 pcbData);
3164 break;
3165 case CMSG_ENVELOPED:
3166 ret = CDecodeEnvelopedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
3167 pcbData);
3168 break;
3169 case CMSG_SIGNED:
3170 ret = CDecodeSignedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
3171 pcbData);
3172 break;
3173 default:
3174 switch (dwParamType)
3175 {
3176 case CMSG_TYPE_PARAM:
3177 ret = CRYPT_CopyParam(pvData, pcbData, &msg->type,
3178 sizeof(msg->type));
3179 break;
3180 default:
3181 {
3182 CRYPT_DATA_BLOB blob;
3183
3184 ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
3185 &blob);
3186 if (ret)
3187 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData,
3188 blob.cbData);
3189 else
3190 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3191 }
3192 }
3193 }
3194 return ret;
3195 }
3196
3197 static BOOL CDecodeHashMsg_VerifyHash(CDecodeMsg *msg)
3198 {
3199 BOOL ret;
3200 CRYPT_DATA_BLOB hashBlob;
3201
3202 ret = ContextPropertyList_FindProperty(msg->properties,
3203 CMSG_HASH_DATA_PARAM, &hashBlob);
3204 if (ret)
3205 {
3206 DWORD computedHashSize = 0;
3207
3208 ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0, NULL,
3209 &computedHashSize);
3210 if (hashBlob.cbData == computedHashSize)
3211 {
3212 LPBYTE computedHash = CryptMemAlloc(computedHashSize);
3213
3214 if (computedHash)
3215 {
3216 ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0,
3217 computedHash, &computedHashSize);
3218 if (ret)
3219 {
3220 if (memcmp(hashBlob.pbData, computedHash, hashBlob.cbData))
3221 {
3222 SetLastError(CRYPT_E_HASH_VALUE);
3223 ret = FALSE;
3224 }
3225 }
3226 CryptMemFree(computedHash);
3227 }
3228 else
3229 {
3230 SetLastError(ERROR_OUTOFMEMORY);
3231 ret = FALSE;
3232 }
3233 }
3234 else
3235 {
3236 SetLastError(CRYPT_E_HASH_VALUE);
3237 ret = FALSE;
3238 }
3239 }
3240 return ret;
3241 }
3242
3243 static BOOL CDecodeSignedMsg_VerifySignatureWithKey(CDecodeMsg *msg,
3244 HCRYPTPROV prov, DWORD signerIndex, PCERT_PUBLIC_KEY_INFO keyInfo)
3245 {
3246 HCRYPTKEY key;
3247 BOOL ret;
3248
3249 if (!prov)
3250 prov = msg->crypt_prov;
3251 ret = CryptImportPublicKeyInfo(prov, X509_ASN_ENCODING, keyInfo, &key);
3252 if (ret)
3253 {
3254 HCRYPTHASH hash;
3255 CRYPT_HASH_BLOB reversedHash;
3256
3257 if (msg->u.signed_data.info->rgSignerInfo[signerIndex].AuthAttrs.cAttr)
3258 hash = msg->u.signed_data.signerHandles[signerIndex].authAttrHash;
3259 else
3260 hash = msg->u.signed_data.signerHandles[signerIndex].contentHash;
3261 ret = CRYPT_ConstructBlob(&reversedHash,
3262 &msg->u.signed_data.info->rgSignerInfo[signerIndex].EncryptedHash);
3263 if (ret)
3264 {
3265 CRYPT_ReverseBytes(&reversedHash);
3266 ret = CryptVerifySignatureW(hash, reversedHash.pbData,
3267 reversedHash.cbData, key, NULL, 0);
3268 CryptMemFree(reversedHash.pbData);
3269 }
3270 CryptDestroyKey(key);
3271 }
3272 return ret;
3273 }
3274
3275 static BOOL CDecodeSignedMsg_VerifySignature(CDecodeMsg *msg, PCERT_INFO info)
3276 {
3277 BOOL ret = FALSE;
3278 DWORD i;
3279
3280 if (!msg->u.signed_data.signerHandles)
3281 {
3282 SetLastError(NTE_BAD_SIGNATURE);
3283 return FALSE;
3284 }
3285 for (i = 0; !ret && i < msg->u.signed_data.info->cSignerInfo; i++)
3286 {
3287 PCMSG_CMS_SIGNER_INFO signerInfo =
3288 &msg->u.signed_data.info->rgSignerInfo[i];
3289
3290 if (signerInfo->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
3291 {
3292 ret = CertCompareCertificateName(X509_ASN_ENCODING,
3293 &signerInfo->SignerId.u.IssuerSerialNumber.Issuer,
3294 &info->Issuer);
3295 if (ret)
3296 {
3297 ret = CertCompareIntegerBlob(
3298 &signerInfo->SignerId.u.IssuerSerialNumber.SerialNumber,
3299 &info->SerialNumber);
3300 if (ret)
3301 break;
3302 }
3303 }
3304 else
3305 {
3306 FIXME("signer %d: unimplemented for key id\n", i);
3307 }
3308 }
3309 if (ret)
3310 ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, 0, i,
3311 &info->SubjectPublicKeyInfo);
3312 else
3313 SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
3314
3315 return ret;
3316 }
3317
3318 static BOOL CDecodeSignedMsg_VerifySignatureEx(CDecodeMsg *msg,
3319 PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA para)
3320 {
3321 BOOL ret = FALSE;
3322
3323 if (para->cbSize != sizeof(CMSG_CTRL_VERIFY_SIGNATURE_EX_PARA))
3324 SetLastError(ERROR_INVALID_PARAMETER);
3325 else if (para->dwSignerIndex >= msg->u.signed_data.info->cSignerInfo)
3326 SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
3327 else if (!msg->u.signed_data.signerHandles)
3328 SetLastError(NTE_BAD_SIGNATURE);
3329 else
3330 {
3331 switch (para->dwSignerType)
3332 {
3333 case CMSG_VERIFY_SIGNER_PUBKEY:
3334 ret = CDecodeSignedMsg_VerifySignatureWithKey(msg,
3335 para->hCryptProv, para->dwSignerIndex, para->pvSigner);
3336 break;
3337 case CMSG_VERIFY_SIGNER_CERT:
3338 {
3339 PCCERT_CONTEXT cert = para->pvSigner;
3340
3341 ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, para->hCryptProv,
3342 para->dwSignerIndex, &cert->pCertInfo->SubjectPublicKeyInfo);
3343 break;
3344 }
3345 default:
3346 FIXME("unimplemented for signer type %d\n", para->dwSignerType);
3347 SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
3348 }
3349 }
3350 return ret;
3351 }
3352
3353 static BOOL WINAPI CRYPT_ImportKeyTrans(
3354 PCRYPT_ALGORITHM_IDENTIFIER pContentEncryptionAlgorithm,
3355 PCMSG_CTRL_KEY_TRANS_DECRYPT_PARA pKeyTransDecryptPara, DWORD dwFlags,
3356 void *pvReserved, HCRYPTKEY *phContentEncryptKey)
3357 {
3358 BOOL ret;
3359 HCRYPTKEY key;
3360
3361 ret = CryptGetUserKey(pKeyTransDecryptPara->hCryptProv,
3362 pKeyTransDecryptPara->dwKeySpec ? pKeyTransDecryptPara->dwKeySpec :
3363 AT_KEYEXCHANGE, &key);
3364 if (ret)
3365 {
3366 CMSG_KEY_TRANS_RECIPIENT_INFO *info =
3367 &pKeyTransDecryptPara->pKeyTrans[pKeyTransDecryptPara->dwRecipientIndex];
3368 CRYPT_DATA_BLOB *encryptedKey = &info->EncryptedKey;
3369 DWORD size = encryptedKey->cbData + sizeof(BLOBHEADER) + sizeof(ALG_ID);
3370 BYTE *keyBlob = CryptMemAlloc(size);
3371
3372 if (keyBlob)
3373 {
3374 DWORD i, k = size - 1;
3375 BLOBHEADER *blobHeader = (BLOBHEADER *)keyBlob;
3376 ALG_ID *algID = (ALG_ID *)(keyBlob + sizeof(BLOBHEADER));
3377
3378 blobHeader->bType = SIMPLEBLOB;
3379 blobHeader->bVersion = CUR_BLOB_VERSION;
3380 blobHeader->reserved = 0;
3381 blobHeader->aiKeyAlg = CertOIDToAlgId(
3382 pContentEncryptionAlgorithm->pszObjId);
3383 *algID = CertOIDToAlgId(info->KeyEncryptionAlgorithm.pszObjId);
3384 for (i = 0; i < encryptedKey->cbData; ++i, --k)
3385 keyBlob[k] = encryptedKey->pbData[i];
3386
3387 ret = CryptImportKey(pKeyTransDecryptPara->hCryptProv, keyBlob,
3388 size, key, 0, phContentEncryptKey);
3389 CryptMemFree(keyBlob);
3390 }
3391 else
3392 ret = FALSE;
3393 CryptDestroyKey(key);
3394 }
3395 return ret;
3396 }
3397
3398 static BOOL CRYPT_ImportEncryptedKey(PCRYPT_ALGORITHM_IDENTIFIER contEncrAlg,
3399 PCMSG_CTRL_DECRYPT_PARA para, PCMSG_KEY_TRANS_RECIPIENT_INFO info,
3400 HCRYPTKEY *key)
3401 {
3402 static HCRYPTOIDFUNCSET set = NULL;
3403 PFN_CMSG_IMPORT_KEY_TRANS importKeyFunc = NULL;
3404 HCRYPTOIDFUNCADDR hFunc = NULL;
3405 CMSG_CTRL_KEY_TRANS_DECRYPT_PARA decryptPara;
3406 BOOL ret;
3407
3408 memset(&decryptPara, 0, sizeof(decryptPara));
3409 decryptPara.cbSize = sizeof(decryptPara);
3410 decryptPara.hCryptProv = para->hCryptProv;
3411 decryptPara.dwKeySpec = para->dwKeySpec;
3412 decryptPara.pKeyTrans = info;
3413 decryptPara.dwRecipientIndex = para->dwRecipientIndex;
3414
3415 if (!set)
3416 set = CryptInitOIDFunctionSet(CMSG_OID_IMPORT_KEY_TRANS_FUNC, 0);
3417 CryptGetOIDFunctionAddress(set, X509_ASN_ENCODING, contEncrAlg->pszObjId, 0,
3418 (void **)&importKeyFunc, &hFunc);
3419 if (!importKeyFunc)
3420 importKeyFunc = CRYPT_ImportKeyTrans;
3421 ret = importKeyFunc(contEncrAlg, &decryptPara, 0, NULL, key);
3422 if (hFunc)
3423 CryptFreeOIDFunctionAddress(hFunc, 0);
3424 return ret;
3425 }
3426
3427 static BOOL CDecodeEnvelopedMsg_CrtlDecrypt(CDecodeMsg *msg,
3428 PCMSG_CTRL_DECRYPT_PARA para)
3429 {
3430 BOOL ret = FALSE;
3431 CEnvelopedDecodeMsg *enveloped_data = &msg->u.enveloped_data;
3432 CRYPT_ENVELOPED_DATA *data = enveloped_data->data;
3433
3434 if (para->cbSize != sizeof(CMSG_CTRL_DECRYPT_PARA))
3435 SetLastError(E_INVALIDARG);
3436 else if (!data)
3437 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3438 else if (para->dwRecipientIndex >= data->cRecipientInfo)
3439 SetLastError(CRYPT_E_INVALID_INDEX);
3440 else if (enveloped_data->decrypted)
3441 SetLastError(CRYPT_E_ALREADY_DECRYPTED);
3442 else if (!para->hCryptProv)
3443 SetLastError(ERROR_INVALID_PARAMETER);
3444 else if (enveloped_data->content.cbData)
3445 {
3446 HCRYPTKEY key;
3447
3448 ret = CRYPT_ImportEncryptedKey(
3449 &data->encryptedContentInfo.contentEncryptionAlgorithm, para,
3450 data->rgRecipientInfo, &key);
3451 if (ret)
3452 {
3453 ret = CryptDecrypt(key, 0, TRUE, 0, enveloped_data->content.pbData,
3454 &enveloped_data->content.cbData);
3455 CryptDestroyKey(key);
3456 }
3457 }
3458 else
3459 ret = TRUE;
3460 if (ret)
3461 enveloped_data->decrypted = TRUE;
3462 return ret;
3463 }
3464
3465 static BOOL CDecodeMsg_Control(HCRYPTMSG hCryptMsg, DWORD dwFlags,
3466 DWORD dwCtrlType, const void *pvCtrlPara)
3467 {
3468 CDecodeMsg *msg = hCryptMsg;
3469 BOOL ret = FALSE;
3470
3471 switch (dwCtrlType)
3472 {
3473 case CMSG_CTRL_VERIFY_SIGNATURE:
3474 switch (msg->type)
3475 {
3476 case CMSG_SIGNED:
3477 ret = CDecodeSignedMsg_VerifySignature(msg, (PCERT_INFO)pvCtrlPara);
3478 break;
3479 default:
3480 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3481 }
3482 break;
3483 case CMSG_CTRL_DECRYPT:
3484 switch (msg->type)
3485 {
3486 case CMSG_ENVELOPED:
3487 ret = CDecodeEnvelopedMsg_CrtlDecrypt(msg,
3488 (PCMSG_CTRL_DECRYPT_PARA)pvCtrlPara);
3489 if (ret && (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
3490 msg->u.enveloped_data.crypt_prov =
3491 ((PCMSG_CTRL_DECRYPT_PARA)pvCtrlPara)->hCryptProv;
3492 break;
3493 default:
3494 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3495 }
3496 break;
3497 case CMSG_CTRL_VERIFY_HASH:
3498 switch (msg->type)
3499 {
3500 case CMSG_HASHED:
3501 ret = CDecodeHashMsg_VerifyHash(msg);
3502 break;
3503 default:
3504 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3505 }
3506 break;
3507 case CMSG_CTRL_VERIFY_SIGNATURE_EX:
3508 switch (msg->type)
3509 {
3510 case CMSG_SIGNED:
3511 ret = CDecodeSignedMsg_VerifySignatureEx(msg,
3512 (PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA)pvCtrlPara);
3513 break;
3514 default:
3515 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
3516 }
3517 break;
3518 default:
3519 SetLastError(CRYPT_E_CONTROL_TYPE);
3520 }
3521 return ret;
3522 }
3523
3524 HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
3525 DWORD dwMsgType, HCRYPTPROV_LEGACY hCryptProv, PCERT_INFO pRecipientInfo,
3526 PCMSG_STREAM_INFO pStreamInfo)
3527 {
3528 CDecodeMsg *msg;
3529
3530 TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
3531 dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
3532
3533 if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
3534 {
3535 SetLastError(E_INVALIDARG);
3536 return NULL;
3537 }
3538 msg = CryptMemAlloc(sizeof(CDecodeMsg));
3539 if (msg)
3540 {
3541 CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
3542 CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update,
3543 CDecodeMsg_Control);
3544 msg->type = dwMsgType;
3545 if (hCryptProv)
3546 msg->crypt_prov = hCryptProv;
3547 else
3548 {
3549 msg->crypt_prov = CRYPT_GetDefaultProvider();
3550 msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
3551 }
3552 memset(&msg->u, 0, sizeof(msg->u));
3553 msg->msg_data.cbData = 0;
3554 msg->msg_data.pbData = NULL;
3555 msg->detached_data.cbData = 0;
3556 msg->detached_data.pbData = NULL;
3557 msg->properties = ContextPropertyList_Create();
3558 }
3559 return msg;
3560 }
3561
3562 HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
3563 {
3564 TRACE("(%p)\n", hCryptMsg);
3565
3566 if (hCryptMsg)
3567 {
3568 CryptMsgBase *msg = hCryptMsg;
3569
3570 InterlockedIncrement(&msg->ref);
3571 }
3572 return hCryptMsg;
3573 }
3574
3575 BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
3576 {
3577 TRACE("(%p)\n", hCryptMsg);
3578
3579 if (hCryptMsg)
3580 {
3581 CryptMsgBase *msg = hCryptMsg;
3582
3583 if (InterlockedDecrement(&msg->ref) == 0)
3584 {
3585 TRACE("freeing %p\n", msg);
3586 if (msg->close)
3587 msg->close(msg);
3588 CryptMemFree(msg);
3589 }
3590 }
3591 return TRUE;
3592 }
3593
3594 BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
3595 DWORD cbData, BOOL fFinal)
3596 {
3597 CryptMsgBase *msg = hCryptMsg;
3598
3599 TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
3600
3601 return msg->update(hCryptMsg, pbData, cbData, fFinal);
3602 }
3603
3604 BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
3605 DWORD dwIndex, void *pvData, DWORD *pcbData)
3606 {
3607 CryptMsgBase *msg = hCryptMsg;
3608
3609 TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
3610 pvData, pcbData);
3611 return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
3612 }
3613
3614 BOOL WINAPI CryptMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
3615 DWORD dwCtrlType, const void *pvCtrlPara)
3616 {
3617 CryptMsgBase *msg = hCryptMsg;
3618
3619 TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType,
3620 pvCtrlPara);
3621 return msg->control(hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
3622 }
3623
3624 static CERT_INFO *CRYPT_GetSignerCertInfoFromMsg(HCRYPTMSG msg,
3625 DWORD dwSignerIndex)
3626 {
3627 CERT_INFO *certInfo = NULL;
3628 DWORD size;
3629
3630 if (CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM, dwSignerIndex, NULL,
3631 &size))
3632 {
3633 certInfo = CryptMemAlloc(size);
3634 if (certInfo)
3635 {
3636 if (!CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM,
3637 dwSignerIndex, certInfo, &size))
3638 {
3639 CryptMemFree(certInfo);
3640 certInfo = NULL;
3641 }
3642 }
3643 }
3644 return certInfo;
3645 }
3646
3647 BOOL WINAPI CryptMsgGetAndVerifySigner(HCRYPTMSG hCryptMsg, DWORD cSignerStore,
3648 HCERTSTORE *rghSignerStore, DWORD dwFlags, PCCERT_CONTEXT *ppSigner,
3649 DWORD *pdwSignerIndex)
3650 {
3651 HCERTSTORE store;
3652 DWORD i, signerIndex = 0;
3653 PCCERT_CONTEXT signerCert = NULL;
3654 BOOL ret = FALSE;
3655
3656 TRACE("(%p, %d, %p, %08x, %p, %p)\n", hCryptMsg, cSignerStore,
3657 rghSignerStore, dwFlags, ppSigner, pdwSignerIndex);
3658
3659 /* Clear output parameters */
3660 if (ppSigner)
3661 *ppSigner = NULL;
3662 if (pdwSignerIndex && !(dwFlags & CMSG_USE_SIGNER_INDEX_FLAG))
3663 *pdwSignerIndex = 0;
3664
3665 /* Create store to search for signer certificates */
3666 store = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0,
3667 CERT_STORE_CREATE_NEW_FLAG, NULL);
3668 if (!(dwFlags & CMSG_TRUSTED_SIGNER_FLAG))
3669 {
3670 HCERTSTORE msgStore = CertOpenStore(CERT_STORE_PROV_MSG, 0, 0, 0,
3671 hCryptMsg);
3672
3673 CertAddStoreToCollection(store, msgStore, 0, 0);
3674 CertCloseStore(msgStore, 0);
3675 }
3676 for (i = 0; i < cSignerStore; i++)
3677 CertAddStoreToCollection(store, rghSignerStore[i], 0, 0);
3678
3679 /* Find signer cert */
3680 if (dwFlags & CMSG_USE_SIGNER_INDEX_FLAG)
3681 {
3682 CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
3683 *pdwSignerIndex);
3684
3685 if (signer)
3686 {
3687 signerIndex = *pdwSignerIndex;
3688 signerCert = CertFindCertificateInStore(store, X509_ASN_ENCODING,
3689 0, CERT_FIND_SUBJECT_CERT, signer, NULL);
3690 CryptMemFree(signer);
3691 }
3692 }
3693 else
3694 {
3695 DWORD count, size = sizeof(count);
3696
3697 if (CryptMsgGetParam(hCryptMsg, CMSG_SIGNER_COUNT_PARAM, 0, &count,
3698 &size))
3699 {
3700 for (i = 0; !signerCert && i < count; i++)
3701 {
3702 CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
3703 i);
3704
3705 if (signer)
3706 {
3707 signerCert = CertFindCertificateInStore(store,
3708 X509_ASN_ENCODING, 0, CERT_FIND_SUBJECT_CERT, signer,
3709 NULL);
3710 if (signerCert)
3711 signerIndex = i;
3712 CryptMemFree(signer);
3713 }
3714 }
3715 }
3716 if (!signerCert)
3717 SetLastError(CRYPT_E_NO_TRUSTED_SIGNER);
3718 }
3719 if (signerCert)
3720 {
3721 if (!(dwFlags & CMSG_SIGNER_ONLY_FLAG))
3722 ret = CryptMsgControl(hCryptMsg, 0, CMSG_CTRL_VERIFY_SIGNATURE,
3723 signerCert->pCertInfo);
3724 else
3725 ret = TRUE;
3726 if (ret)
3727 {
3728 if (ppSigner)
3729 *ppSigner = CertDuplicateCertificateContext(signerCert);
3730 if (pdwSignerIndex)
3731 *pdwSignerIndex = signerIndex;
3732 }
3733 CertFreeCertificateContext(signerCert);
3734 }
3735
3736 CertCloseStore(store, 0);
3737 return ret;
3738 }
3739
3740 BOOL WINAPI CryptMsgVerifyCountersignatureEncodedEx(HCRYPTPROV_LEGACY hCryptProv,
3741 DWORD dwEncodingType, PBYTE pbSignerInfo, DWORD cbSignerInfo,
3742 PBYTE pbSignerInfoCountersignature, DWORD cbSignerInfoCountersignature,
3743 DWORD dwSignerType, void *pvSigner, DWORD dwFlags, void *pvReserved)
3744 {
3745 FIXME("(%08lx, %08x, %p, %d, %p, %d, %d, %p, %08x, %p): stub\n", hCryptProv,
3746 dwEncodingType, pbSignerInfo, cbSignerInfo, pbSignerInfoCountersignature,
3747 cbSignerInfoCountersignature, dwSignerType, pvSigner, dwFlags, pvReserved);
3748 return FALSE;
3749 }
3750
3751 BOOL WINAPI CryptMsgEncodeAndSignCTL(DWORD dwMsgEncodingType,
3752 PCTL_INFO pCtlInfo, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
3753 BYTE *pbEncoded, DWORD *pcbEncoded)
3754 {
3755 BOOL ret;
3756 BYTE *pbCtlContent;
3757 DWORD cbCtlContent;
3758
3759 TRACE("(%08x, %p, %p, %08x, %p, %p)\n", dwMsgEncodingType, pCtlInfo,
3760 pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3761
3762 if (dwFlags)
3763 {
3764 FIXME("unimplemented for flags %08x\n", dwFlags);
3765 return FALSE;
3766 }
3767 if ((ret = CryptEncodeObjectEx(dwMsgEncodingType, PKCS_CTL, pCtlInfo,
3768 CRYPT_ENCODE_ALLOC_FLAG, NULL, &pbCtlContent, &cbCtlContent)))
3769 {
3770 ret = CryptMsgSignCTL(dwMsgEncodingType, pbCtlContent, cbCtlContent,
3771 pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3772 LocalFree(pbCtlContent);
3773 }
3774 return ret;
3775 }
3776
3777 BOOL WINAPI CryptMsgSignCTL(DWORD dwMsgEncodingType, BYTE *pbCtlContent,
3778 DWORD cbCtlContent, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
3779 BYTE *pbEncoded, DWORD *pcbEncoded)
3780 {
3781 static char oid_ctl[] = szOID_CTL;
3782 BOOL ret;
3783 HCRYPTMSG msg;
3784
3785 TRACE("(%08x, %p, %d, %p, %08x, %p, %p)\n", dwMsgEncodingType,
3786 pbCtlContent, cbCtlContent, pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3787
3788 if (dwFlags)
3789 {
3790 FIXME("unimplemented for flags %08x\n", dwFlags);
3791 return FALSE;
3792 }
3793 msg = CryptMsgOpenToEncode(dwMsgEncodingType, 0, CMSG_SIGNED, pSignInfo,
3794 oid_ctl, NULL);
3795 if (msg)
3796 {
3797 ret = CryptMsgUpdate(msg, pbCtlContent, cbCtlContent, TRUE);
3798 if (ret)
3799 ret = CryptMsgGetParam(msg, CMSG_CONTENT_PARAM, 0, pbEncoded,
3800 pcbEncoded);
3801 CryptMsgClose(msg);
3802 }
3803 else
3804 ret = FALSE;
3805 return ret;
3806 }
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