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[wine/wine64.git] / dlls / crypt32 / cert.c
blob4e5fcfdcfdc0219a25f2f6d65e85a24970a2616a
1 /*
2 * Copyright 2004-2006 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
20 #include <assert.h>
21 #include <stdarg.h>
22
23 #define NONAMELESSUNION
24 #include "windef.h"
25 #include "winbase.h"
26 #include "wincrypt.h"
27 #include "winnls.h"
28 #include "rpc.h"
29 #include "wine/debug.h"
30 #include "crypt32_private.h"
31
32 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
33
34 /* Internal version of CertGetCertificateContextProperty that gets properties
35 * directly from the context (or the context it's linked to, depending on its
36 * type.) Doesn't handle special-case properties, since they are handled by
37 * CertGetCertificateContextProperty, and are particular to the store in which
38 * the property exists (which is separate from the context.)
39 */
40 static BOOL WINAPI CertContext_GetProperty(void *context, DWORD dwPropId,
41 void *pvData, DWORD *pcbData);
42
43 /* Internal version of CertSetCertificateContextProperty that sets properties
44 * directly on the context (or the context it's linked to, depending on its
45 * type.) Doesn't handle special cases, since they're handled by
46 * CertSetCertificateContextProperty anyway.
47 */
48 static BOOL WINAPI CertContext_SetProperty(void *context, DWORD dwPropId,
49 DWORD dwFlags, const void *pvData);
50
51 BOOL WINAPI CertAddEncodedCertificateToStore(HCERTSTORE hCertStore,
52 DWORD dwCertEncodingType, const BYTE *pbCertEncoded, DWORD cbCertEncoded,
53 DWORD dwAddDisposition, PCCERT_CONTEXT *ppCertContext)
54 {
55 PCCERT_CONTEXT cert = CertCreateCertificateContext(dwCertEncodingType,
56 pbCertEncoded, cbCertEncoded);
57 BOOL ret;
58
59 TRACE("(%p, %08x, %p, %d, %08x, %p)\n", hCertStore, dwCertEncodingType,
60 pbCertEncoded, cbCertEncoded, dwAddDisposition, ppCertContext);
61
62 if (cert)
63 {
64 ret = CertAddCertificateContextToStore(hCertStore, cert,
65 dwAddDisposition, ppCertContext);
66 CertFreeCertificateContext(cert);
67 }
68 else
69 ret = FALSE;
70 return ret;
71 }
72
73 PCCERT_CONTEXT WINAPI CertCreateCertificateContext(DWORD dwCertEncodingType,
74 const BYTE *pbCertEncoded, DWORD cbCertEncoded)
75 {
76 PCERT_CONTEXT cert = NULL;
77 BOOL ret;
78 PCERT_INFO certInfo = NULL;
79 DWORD size = 0;
80
81 TRACE("(%08x, %p, %d)\n", dwCertEncodingType, pbCertEncoded,
82 cbCertEncoded);
83
84 ret = CryptDecodeObjectEx(dwCertEncodingType, X509_CERT_TO_BE_SIGNED,
85 pbCertEncoded, cbCertEncoded, CRYPT_DECODE_ALLOC_FLAG, NULL,
86 (BYTE *)&certInfo, &size);
87 if (ret)
88 {
89 BYTE *data = NULL;
90
91 cert = (PCERT_CONTEXT)Context_CreateDataContext(sizeof(CERT_CONTEXT));
92 if (!cert)
93 goto end;
94 data = CryptMemAlloc(cbCertEncoded);
95 if (!data)
96 {
97 CryptMemFree(cert);
98 cert = NULL;
99 goto end;
100 }
101 memcpy(data, pbCertEncoded, cbCertEncoded);
102 cert->dwCertEncodingType = dwCertEncodingType;
103 cert->pbCertEncoded = data;
104 cert->cbCertEncoded = cbCertEncoded;
105 cert->pCertInfo = certInfo;
106 cert->hCertStore = 0;
107 }
108
109 end:
110 return (PCCERT_CONTEXT)cert;
111 }
112
113 PCCERT_CONTEXT WINAPI CertDuplicateCertificateContext(
114 PCCERT_CONTEXT pCertContext)
115 {
116 TRACE("(%p)\n", pCertContext);
117 Context_AddRef((void *)pCertContext, sizeof(CERT_CONTEXT));
118 return pCertContext;
119 }
120
121 static void CertDataContext_Free(void *context)
122 {
123 PCERT_CONTEXT certContext = (PCERT_CONTEXT)context;
124
125 CryptMemFree(certContext->pbCertEncoded);
126 LocalFree(certContext->pCertInfo);
127 }
128
129 BOOL WINAPI CertFreeCertificateContext(PCCERT_CONTEXT pCertContext)
130 {
131 TRACE("(%p)\n", pCertContext);
132
133 if (pCertContext)
134 Context_Release((void *)pCertContext, sizeof(CERT_CONTEXT),
135 CertDataContext_Free);
136 return TRUE;
137 }
138
139 DWORD WINAPI CertEnumCertificateContextProperties(PCCERT_CONTEXT pCertContext,
140 DWORD dwPropId)
141 {
142 PCONTEXT_PROPERTY_LIST properties = Context_GetProperties(
143 (void *)pCertContext, sizeof(CERT_CONTEXT));
144 DWORD ret;
145
146 TRACE("(%p, %d)\n", pCertContext, dwPropId);
147
148 if (properties)
149 ret = ContextPropertyList_EnumPropIDs(properties, dwPropId);
150 else
151 ret = 0;
152 return ret;
153 }
154
155 static BOOL CertContext_GetHashProp(void *context, DWORD dwPropId,
156 ALG_ID algID, const BYTE *toHash, DWORD toHashLen, void *pvData,
157 DWORD *pcbData)
158 {
159 BOOL ret = CryptHashCertificate(0, algID, 0, toHash, toHashLen, pvData,
160 pcbData);
161 if (ret && pvData)
162 {
163 CRYPT_DATA_BLOB blob = { *pcbData, pvData };
164
165 ret = CertContext_SetProperty(context, dwPropId, 0, &blob);
166 }
167 return ret;
168 }
169
170 static BOOL CertContext_CopyParam(void *pvData, DWORD *pcbData, const void *pb,
171 DWORD cb)
172 {
173 BOOL ret = TRUE;
174
175 if (!pvData)
176 *pcbData = cb;
177 else if (*pcbData < cb)
178 {
179 SetLastError(ERROR_MORE_DATA);
180 *pcbData = cb;
181 ret = FALSE;
182 }
183 else
184 {
185 memcpy(pvData, pb, cb);
186 *pcbData = cb;
187 }
188 return ret;
189 }
190
191 static BOOL WINAPI CertContext_GetProperty(void *context, DWORD dwPropId,
192 void *pvData, DWORD *pcbData)
193 {
194 PCCERT_CONTEXT pCertContext = (PCCERT_CONTEXT)context;
195 PCONTEXT_PROPERTY_LIST properties =
196 Context_GetProperties(context, sizeof(CERT_CONTEXT));
197 BOOL ret;
198 CRYPT_DATA_BLOB blob;
199
200 TRACE("(%p, %d, %p, %p)\n", context, dwPropId, pvData, pcbData);
201
202 if (properties)
203 ret = ContextPropertyList_FindProperty(properties, dwPropId, &blob);
204 else
205 ret = FALSE;
206 if (ret)
207 ret = CertContext_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
208 else
209 {
210 /* Implicit properties */
211 switch (dwPropId)
212 {
213 case CERT_SHA1_HASH_PROP_ID:
214 ret = CertContext_GetHashProp(context, dwPropId, CALG_SHA1,
215 pCertContext->pbCertEncoded, pCertContext->cbCertEncoded, pvData,
216 pcbData);
217 break;
218 case CERT_MD5_HASH_PROP_ID:
219 ret = CertContext_GetHashProp(context, dwPropId, CALG_MD5,
220 pCertContext->pbCertEncoded, pCertContext->cbCertEncoded, pvData,
221 pcbData);
222 break;
223 case CERT_SUBJECT_NAME_MD5_HASH_PROP_ID:
224 ret = CertContext_GetHashProp(context, dwPropId, CALG_MD5,
225 pCertContext->pCertInfo->Subject.pbData,
226 pCertContext->pCertInfo->Subject.cbData,
227 pvData, pcbData);
228 break;
229 case CERT_SUBJECT_PUBLIC_KEY_MD5_HASH_PROP_ID:
230 ret = CertContext_GetHashProp(context, dwPropId, CALG_MD5,
231 pCertContext->pCertInfo->SubjectPublicKeyInfo.PublicKey.pbData,
232 pCertContext->pCertInfo->SubjectPublicKeyInfo.PublicKey.cbData,
233 pvData, pcbData);
234 break;
235 case CERT_ISSUER_SERIAL_NUMBER_MD5_HASH_PROP_ID:
236 ret = CertContext_GetHashProp(context, dwPropId, CALG_MD5,
237 pCertContext->pCertInfo->SerialNumber.pbData,
238 pCertContext->pCertInfo->SerialNumber.cbData,
239 pvData, pcbData);
240 break;
241 case CERT_SIGNATURE_HASH_PROP_ID:
242 FIXME("CERT_SIGNATURE_HASH_PROP_ID unimplemented\n");
243 SetLastError(CRYPT_E_NOT_FOUND);
244 break;
245 case CERT_KEY_IDENTIFIER_PROP_ID:
246 {
247 PCERT_EXTENSION ext = CertFindExtension(
248 szOID_SUBJECT_KEY_IDENTIFIER, pCertContext->pCertInfo->cExtension,
249 pCertContext->pCertInfo->rgExtension);
250
251 if (ext)
252 {
253 CRYPT_DATA_BLOB value;
254 DWORD size;
255
256 ret = CryptDecodeObjectEx(X509_ASN_ENCODING,
257 szOID_SUBJECT_KEY_IDENTIFIER, ext->Value.pbData,
258 ext->Value.cbData, CRYPT_DECODE_NOCOPY_FLAG, NULL, &value,
259 &size);
260 if (ret)
261 {
262 ret = CertContext_CopyParam(pvData, pcbData, value.pbData,
263 value.cbData);
264 CertContext_SetProperty(context, dwPropId, 0, &value);
265 }
266 }
267 else
268 SetLastError(ERROR_INVALID_DATA);
269 break;
270 }
271 default:
272 SetLastError(CRYPT_E_NOT_FOUND);
273 }
274 }
275 TRACE("returning %d\n", ret);
276 return ret;
277 }
278
279 void CRYPT_FixKeyProvInfoPointers(PCRYPT_KEY_PROV_INFO info)
280 {
281 DWORD i, containerLen, provNameLen;
282 LPBYTE data = (LPBYTE)info + sizeof(CRYPT_KEY_PROV_INFO);
283
284 info->pwszContainerName = (LPWSTR)data;
285 containerLen = (lstrlenW(info->pwszContainerName) + 1) * sizeof(WCHAR);
286 data += containerLen;
287
288 info->pwszProvName = (LPWSTR)data;
289 provNameLen = (lstrlenW(info->pwszProvName) + 1) * sizeof(WCHAR);
290 data += provNameLen;
291
292 info->rgProvParam = (PCRYPT_KEY_PROV_PARAM)data;
293 data += info->cProvParam * sizeof(CRYPT_KEY_PROV_PARAM);
294
295 for (i = 0; i < info->cProvParam; i++)
296 {
297 info->rgProvParam[i].pbData = data;
298 data += info->rgProvParam[i].cbData;
299 }
300 }
301
302 BOOL WINAPI CertGetCertificateContextProperty(PCCERT_CONTEXT pCertContext,
303 DWORD dwPropId, void *pvData, DWORD *pcbData)
304 {
305 BOOL ret;
306
307 TRACE("(%p, %d, %p, %p)\n", pCertContext, dwPropId, pvData, pcbData);
308
309 switch (dwPropId)
310 {
311 case 0:
312 case CERT_CERT_PROP_ID:
313 case CERT_CRL_PROP_ID:
314 case CERT_CTL_PROP_ID:
315 SetLastError(E_INVALIDARG);
316 ret = FALSE;
317 break;
318 case CERT_ACCESS_STATE_PROP_ID:
319 if (pCertContext->hCertStore)
320 ret = CertGetStoreProperty(pCertContext->hCertStore, dwPropId,
321 pvData, pcbData);
322 else
323 {
324 DWORD state = 0;
325
326 ret = CertContext_CopyParam(pvData, pcbData, &state, sizeof(state));
327 }
328 break;
329 case CERT_KEY_PROV_HANDLE_PROP_ID:
330 {
331 CERT_KEY_CONTEXT keyContext;
332 DWORD size = sizeof(keyContext);
333
334 ret = CertContext_GetProperty((void *)pCertContext,
335 CERT_KEY_CONTEXT_PROP_ID, &keyContext, &size);
336 if (ret)
337 ret = CertContext_CopyParam(pvData, pcbData, &keyContext.hCryptProv,
338 sizeof(keyContext.hCryptProv));
339 break;
340 }
341 case CERT_KEY_PROV_INFO_PROP_ID:
342 ret = CertContext_GetProperty((void *)pCertContext, dwPropId, pvData,
343 pcbData);
344 if (ret && pvData)
345 CRYPT_FixKeyProvInfoPointers((PCRYPT_KEY_PROV_INFO)pvData);
346 break;
347 default:
348 ret = CertContext_GetProperty((void *)pCertContext, dwPropId, pvData,
349 pcbData);
350 }
351
352 TRACE("returning %d\n", ret);
353 return ret;
354 }
355
356 /* Copies key provider info from from into to, where to is assumed to be a
357 * contiguous buffer of memory large enough for from and all its associated
358 * data, but whose pointers are uninitialized.
359 * Upon return, to contains a contiguous copy of from, packed in the following
360 * order:
361 * - CRYPT_KEY_PROV_INFO
362 * - pwszContainerName
363 * - pwszProvName
364 * - rgProvParam[0]...
365 */
366 static void CRYPT_CopyKeyProvInfo(PCRYPT_KEY_PROV_INFO to,
367 const CRYPT_KEY_PROV_INFO *from)
368 {
369 DWORD i;
370 LPBYTE nextData = (LPBYTE)to + sizeof(CRYPT_KEY_PROV_INFO);
371
372 if (from->pwszContainerName)
373 {
374 to->pwszContainerName = (LPWSTR)nextData;
375 lstrcpyW(to->pwszContainerName, from->pwszContainerName);
376 nextData += (lstrlenW(from->pwszContainerName) + 1) * sizeof(WCHAR);
377 }
378 else
379 to->pwszContainerName = NULL;
380 if (from->pwszProvName)
381 {
382 to->pwszProvName = (LPWSTR)nextData;
383 lstrcpyW(to->pwszProvName, from->pwszProvName);
384 nextData += (lstrlenW(from->pwszProvName) + 1) * sizeof(WCHAR);
385 }
386 else
387 to->pwszProvName = NULL;
388 to->dwProvType = from->dwProvType;
389 to->dwFlags = from->dwFlags;
390 to->cProvParam = from->cProvParam;
391 to->rgProvParam = (PCRYPT_KEY_PROV_PARAM)nextData;
392 nextData += to->cProvParam * sizeof(CRYPT_KEY_PROV_PARAM);
393 to->dwKeySpec = from->dwKeySpec;
394 for (i = 0; i < to->cProvParam; i++)
395 {
396 memcpy(&to->rgProvParam[i], &from->rgProvParam[i],
397 sizeof(CRYPT_KEY_PROV_PARAM));
398 to->rgProvParam[i].pbData = nextData;
399 memcpy(to->rgProvParam[i].pbData, from->rgProvParam[i].pbData,
400 from->rgProvParam[i].cbData);
401 nextData += from->rgProvParam[i].cbData;
402 }
403 }
404
405 static BOOL CertContext_SetKeyProvInfoProperty(PCONTEXT_PROPERTY_LIST properties,
406 const CRYPT_KEY_PROV_INFO *info)
407 {
408 BOOL ret;
409 LPBYTE buf = NULL;
410 DWORD size = sizeof(CRYPT_KEY_PROV_INFO), i, containerSize, provNameSize;
411
412 if (info->pwszContainerName)
413 containerSize = (lstrlenW(info->pwszContainerName) + 1) * sizeof(WCHAR);
414 else
415 containerSize = 0;
416 if (info->pwszProvName)
417 provNameSize = (lstrlenW(info->pwszProvName) + 1) * sizeof(WCHAR);
418 else
419 provNameSize = 0;
420 size += containerSize + provNameSize;
421 for (i = 0; i < info->cProvParam; i++)
422 size += sizeof(CRYPT_KEY_PROV_PARAM) + info->rgProvParam[i].cbData;
423 buf = CryptMemAlloc(size);
424 if (buf)
425 {
426 CRYPT_CopyKeyProvInfo((PCRYPT_KEY_PROV_INFO)buf, info);
427 ret = ContextPropertyList_SetProperty(properties,
428 CERT_KEY_PROV_INFO_PROP_ID, buf, size);
429 CryptMemFree(buf);
430 }
431 else
432 ret = FALSE;
433 return ret;
434 }
435
436 static BOOL WINAPI CertContext_SetProperty(void *context, DWORD dwPropId,
437 DWORD dwFlags, const void *pvData)
438 {
439 PCONTEXT_PROPERTY_LIST properties =
440 Context_GetProperties(context, sizeof(CERT_CONTEXT));
441 BOOL ret;
442
443 TRACE("(%p, %d, %08x, %p)\n", context, dwPropId, dwFlags, pvData);
444
445 if (!properties)
446 ret = FALSE;
447 else
448 {
449 switch (dwPropId)
450 {
451 case CERT_AUTO_ENROLL_PROP_ID:
452 case CERT_CTL_USAGE_PROP_ID: /* same as CERT_ENHKEY_USAGE_PROP_ID */
453 case CERT_DESCRIPTION_PROP_ID:
454 case CERT_FRIENDLY_NAME_PROP_ID:
455 case CERT_HASH_PROP_ID:
456 case CERT_KEY_IDENTIFIER_PROP_ID:
457 case CERT_MD5_HASH_PROP_ID:
458 case CERT_NEXT_UPDATE_LOCATION_PROP_ID:
459 case CERT_PUBKEY_ALG_PARA_PROP_ID:
460 case CERT_PVK_FILE_PROP_ID:
461 case CERT_SIGNATURE_HASH_PROP_ID:
462 case CERT_ISSUER_PUBLIC_KEY_MD5_HASH_PROP_ID:
463 case CERT_SUBJECT_NAME_MD5_HASH_PROP_ID:
464 case CERT_SUBJECT_PUBLIC_KEY_MD5_HASH_PROP_ID:
465 case CERT_ENROLLMENT_PROP_ID:
466 case CERT_CROSS_CERT_DIST_POINTS_PROP_ID:
467 case CERT_RENEWAL_PROP_ID:
468 {
469 if (pvData)
470 {
471 const CRYPT_DATA_BLOB *blob = (const CRYPT_DATA_BLOB *)pvData;
472
473 ret = ContextPropertyList_SetProperty(properties, dwPropId,
474 blob->pbData, blob->cbData);
475 }
476 else
477 {
478 ContextPropertyList_RemoveProperty(properties, dwPropId);
479 ret = TRUE;
480 }
481 break;
482 }
483 case CERT_DATE_STAMP_PROP_ID:
484 if (pvData)
485 ret = ContextPropertyList_SetProperty(properties, dwPropId,
486 (const BYTE *)pvData, sizeof(FILETIME));
487 else
488 {
489 ContextPropertyList_RemoveProperty(properties, dwPropId);
490 ret = TRUE;
491 }
492 break;
493 case CERT_KEY_CONTEXT_PROP_ID:
494 {
495 if (pvData)
496 {
497 const CERT_KEY_CONTEXT *keyContext = (const CERT_KEY_CONTEXT *)pvData;
498
499 if (keyContext->cbSize != sizeof(CERT_KEY_CONTEXT))
500 {
501 SetLastError(E_INVALIDARG);
502 ret = FALSE;
503 }
504 else
505 ret = ContextPropertyList_SetProperty(properties, dwPropId,
506 (const BYTE *)keyContext, keyContext->cbSize);
507 }
508 else
509 {
510 ContextPropertyList_RemoveProperty(properties, dwPropId);
511 ret = TRUE;
512 }
513 break;
514 }
515 case CERT_KEY_PROV_INFO_PROP_ID:
516 if (pvData)
517 ret = CertContext_SetKeyProvInfoProperty(properties,
518 (const CRYPT_KEY_PROV_INFO *)pvData);
519 else
520 {
521 ContextPropertyList_RemoveProperty(properties, dwPropId);
522 ret = TRUE;
523 }
524 break;
525 case CERT_KEY_PROV_HANDLE_PROP_ID:
526 {
527 CERT_KEY_CONTEXT keyContext;
528 DWORD size = sizeof(keyContext);
529
530 ret = CertContext_GetProperty(context, CERT_KEY_CONTEXT_PROP_ID,
531 &keyContext, &size);
532 if (ret)
533 {
534 if (!(dwFlags & CERT_STORE_NO_CRYPT_RELEASE_FLAG))
535 CryptReleaseContext(keyContext.hCryptProv, 0);
536 if (pvData)
537 keyContext.hCryptProv = *(const HCRYPTPROV *)pvData;
538 else
539 keyContext.hCryptProv = 0;
540 ret = CertContext_SetProperty(context, CERT_KEY_CONTEXT_PROP_ID,
541 0, &keyContext);
542 }
543 break;
544 }
545 default:
546 FIXME("%d: stub\n", dwPropId);
547 ret = FALSE;
548 }
549 }
550 TRACE("returning %d\n", ret);
551 return ret;
552 }
553
554 BOOL WINAPI CertSetCertificateContextProperty(PCCERT_CONTEXT pCertContext,
555 DWORD dwPropId, DWORD dwFlags, const void *pvData)
556 {
557 BOOL ret;
558
559 TRACE("(%p, %d, %08x, %p)\n", pCertContext, dwPropId, dwFlags, pvData);
560
561 /* Handle special cases for "read-only"/invalid prop IDs. Windows just
562 * crashes on most of these, I'll be safer.
563 */
564 switch (dwPropId)
565 {
566 case 0:
567 case CERT_ACCESS_STATE_PROP_ID:
568 case CERT_CERT_PROP_ID:
569 case CERT_CRL_PROP_ID:
570 case CERT_CTL_PROP_ID:
571 SetLastError(E_INVALIDARG);
572 return FALSE;
573 }
574 ret = CertContext_SetProperty((void *)pCertContext, dwPropId, dwFlags,
575 pvData);
576 TRACE("returning %d\n", ret);
577 return ret;
578 }
579
580 /* Acquires the private key using the key provider info, retrieving info from
581 * the certificate if info is NULL. The acquired provider is returned in
582 * *phCryptProv, and the key spec for the provider is returned in *pdwKeySpec.
583 */
584 static BOOL CRYPT_AcquirePrivateKeyFromProvInfo(PCCERT_CONTEXT pCert,
585 PCRYPT_KEY_PROV_INFO info, HCRYPTPROV *phCryptProv, DWORD *pdwKeySpec)
586 {
587 DWORD size = 0;
588 BOOL allocated = FALSE, ret = TRUE;
589
590 if (!info)
591 {
592 ret = CertGetCertificateContextProperty(pCert,
593 CERT_KEY_PROV_INFO_PROP_ID, 0, &size);
594 if (ret)
595 {
596 info = (PCRYPT_KEY_PROV_INFO)HeapAlloc(GetProcessHeap(), 0, size);
597 if (info)
598 {
599 ret = CertGetCertificateContextProperty(pCert,
600 CERT_KEY_PROV_INFO_PROP_ID, info, &size);
601 allocated = TRUE;
602 }
603 }
604 else
605 SetLastError(CRYPT_E_NO_KEY_PROPERTY);
606 }
607 if (ret)
608 {
609 ret = CryptAcquireContextW(phCryptProv, info->pwszContainerName,
610 info->pwszProvName, info->dwProvType, 0);
611 if (ret)
612 {
613 DWORD i;
614
615 for (i = 0; i < info->cProvParam; i++)
616 {
617 CryptSetProvParam(*phCryptProv,
618 info->rgProvParam[i].dwParam, info->rgProvParam[i].pbData,
619 info->rgProvParam[i].dwFlags);
620 }
621 *pdwKeySpec = info->dwKeySpec;
622 }
623 else
624 SetLastError(CRYPT_E_NO_KEY_PROPERTY);
625 }
626 if (allocated)
627 HeapFree(GetProcessHeap(), 0, info);
628 return ret;
629 }
630
631 BOOL WINAPI CryptAcquireCertificatePrivateKey(PCCERT_CONTEXT pCert,
632 DWORD dwFlags, void *pvReserved, HCRYPTPROV_OR_NCRYPT_KEY_HANDLE *phCryptProv,
633 DWORD *pdwKeySpec, BOOL *pfCallerFreeProv)
634 {
635 BOOL ret = FALSE, cache = FALSE;
636 PCRYPT_KEY_PROV_INFO info = NULL;
637 CERT_KEY_CONTEXT keyContext;
638 DWORD size;
639
640 TRACE("(%p, %08x, %p, %p, %p, %p)\n", pCert, dwFlags, pvReserved,
641 phCryptProv, pdwKeySpec, pfCallerFreeProv);
642
643 if (dwFlags & CRYPT_ACQUIRE_USE_PROV_INFO_FLAG)
644 {
645 DWORD size = 0;
646
647 ret = CertGetCertificateContextProperty(pCert,
648 CERT_KEY_PROV_INFO_PROP_ID, 0, &size);
649 if (ret)
650 {
651 info = (PCRYPT_KEY_PROV_INFO)HeapAlloc(
652 GetProcessHeap(), 0, size);
653 ret = CertGetCertificateContextProperty(pCert,
654 CERT_KEY_PROV_INFO_PROP_ID, info, &size);
655 if (ret)
656 cache = info->dwFlags & CERT_SET_KEY_CONTEXT_PROP_ID;
657 }
658 }
659 else if (dwFlags & CRYPT_ACQUIRE_CACHE_FLAG)
660 cache = TRUE;
661 *phCryptProv = 0;
662 if (cache)
663 {
664 size = sizeof(keyContext);
665 ret = CertGetCertificateContextProperty(pCert, CERT_KEY_CONTEXT_PROP_ID,
666 &keyContext, &size);
667 if (ret)
668 {
669 *phCryptProv = keyContext.hCryptProv;
670 if (pdwKeySpec)
671 *pdwKeySpec = keyContext.dwKeySpec;
672 if (pfCallerFreeProv)
673 *pfCallerFreeProv = !cache;
674 }
675 }
676 if (!*phCryptProv)
677 {
678 ret = CRYPT_AcquirePrivateKeyFromProvInfo(pCert, info,
679 &keyContext.hCryptProv, &keyContext.dwKeySpec);
680 if (ret)
681 {
682 *phCryptProv = keyContext.hCryptProv;
683 if (pdwKeySpec)
684 *pdwKeySpec = keyContext.dwKeySpec;
685 if (cache)
686 {
687 keyContext.cbSize = sizeof(keyContext);
688 if (CertSetCertificateContextProperty(pCert,
689 CERT_KEY_CONTEXT_PROP_ID, 0, &keyContext))
690 {
691 if (pfCallerFreeProv)
692 *pfCallerFreeProv = FALSE;
693 }
694 }
695 else
696 {
697 if (pfCallerFreeProv)
698 *pfCallerFreeProv = TRUE;
699 }
700 }
701 }
702 HeapFree(GetProcessHeap(), 0, info);
703 return ret;
704 }
705
706 BOOL WINAPI CertCompareCertificate(DWORD dwCertEncodingType,
707 PCERT_INFO pCertId1, PCERT_INFO pCertId2)
708 {
709 BOOL ret;
710
711 TRACE("(%08x, %p, %p)\n", dwCertEncodingType, pCertId1, pCertId2);
712
713 ret = CertCompareCertificateName(dwCertEncodingType, &pCertId1->Issuer,
714 &pCertId2->Issuer) && CertCompareIntegerBlob(&pCertId1->SerialNumber,
715 &pCertId2->SerialNumber);
716 TRACE("returning %d\n", ret);
717 return ret;
718 }
719
720 BOOL WINAPI CertCompareCertificateName(DWORD dwCertEncodingType,
721 PCERT_NAME_BLOB pCertName1, PCERT_NAME_BLOB pCertName2)
722 {
723 BOOL ret;
724
725 TRACE("(%08x, %p, %p)\n", dwCertEncodingType, pCertName1, pCertName2);
726
727 if (pCertName1->cbData == pCertName2->cbData)
728 {
729 if (pCertName1->cbData)
730 ret = !memcmp(pCertName1->pbData, pCertName2->pbData,
731 pCertName1->cbData);
732 else
733 ret = TRUE;
734 }
735 else
736 ret = FALSE;
737 TRACE("returning %d\n", ret);
738 return ret;
739 }
740
741 /* Returns the number of significant bytes in pInt, where a byte is
742 * insignificant if it's a leading 0 for positive numbers or a leading 0xff
743 * for negative numbers. pInt is assumed to be little-endian.
744 */
745 static DWORD CRYPT_significantBytes(const CRYPT_INTEGER_BLOB *pInt)
746 {
747 DWORD ret = pInt->cbData;
748
749 while (ret > 1)
750 {
751 if (pInt->pbData[ret - 2] <= 0x7f && pInt->pbData[ret - 1] == 0)
752 ret--;
753 else if (pInt->pbData[ret - 2] >= 0x80 && pInt->pbData[ret - 1] == 0xff)
754 ret--;
755 else
756 break;
757 }
758 return ret;
759 }
760
761 BOOL WINAPI CertCompareIntegerBlob(PCRYPT_INTEGER_BLOB pInt1,
762 PCRYPT_INTEGER_BLOB pInt2)
763 {
764 BOOL ret;
765 DWORD cb1, cb2;
766
767 TRACE("(%p, %p)\n", pInt1, pInt2);
768
769 cb1 = CRYPT_significantBytes(pInt1);
770 cb2 = CRYPT_significantBytes(pInt2);
771 if (cb1 == cb2)
772 {
773 if (cb1)
774 ret = !memcmp(pInt1->pbData, pInt2->pbData, cb1);
775 else
776 ret = TRUE;
777 }
778 else
779 ret = FALSE;
780 TRACE("returning %d\n", ret);
781 return ret;
782 }
783
784 BOOL WINAPI CertComparePublicKeyInfo(DWORD dwCertEncodingType,
785 PCERT_PUBLIC_KEY_INFO pPublicKey1, PCERT_PUBLIC_KEY_INFO pPublicKey2)
786 {
787 BOOL ret;
788
789 TRACE("(%08x, %p, %p)\n", dwCertEncodingType, pPublicKey1, pPublicKey2);
790
791 if (pPublicKey1->PublicKey.cbData == pPublicKey2->PublicKey.cbData &&
792 pPublicKey1->PublicKey.cUnusedBits == pPublicKey2->PublicKey.cUnusedBits)
793 {
794 if (pPublicKey2->PublicKey.cbData)
795 ret = !memcmp(pPublicKey1->PublicKey.pbData,
796 pPublicKey2->PublicKey.pbData, pPublicKey1->PublicKey.cbData);
797 else
798 ret = TRUE;
799 }
800 else
801 ret = FALSE;
802 return ret;
803 }
804
805 DWORD WINAPI CertGetPublicKeyLength(DWORD dwCertEncodingType,
806 PCERT_PUBLIC_KEY_INFO pPublicKey)
807 {
808 DWORD len = 0;
809
810 TRACE("(%08x, %p)\n", dwCertEncodingType, pPublicKey);
811
812 if (dwCertEncodingType != X509_ASN_ENCODING)
813 {
814 SetLastError(ERROR_FILE_NOT_FOUND);
815 return 0;
816 }
817 if (pPublicKey->Algorithm.pszObjId &&
818 !strcmp(pPublicKey->Algorithm.pszObjId, szOID_RSA_DH))
819 {
820 FIXME("unimplemented for DH public keys\n");
821 SetLastError(CRYPT_E_ASN1_BADTAG);
822 }
823 else
824 {
825 DWORD size;
826 PBYTE buf;
827 BOOL ret = CryptDecodeObjectEx(dwCertEncodingType,
828 RSA_CSP_PUBLICKEYBLOB, pPublicKey->PublicKey.pbData,
829 pPublicKey->PublicKey.cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &buf,
830 &size);
831
832 if (ret)
833 {
834 RSAPUBKEY *rsaPubKey = (RSAPUBKEY *)((LPBYTE)buf +
835 sizeof(BLOBHEADER));
836
837 len = rsaPubKey->bitlen;
838 LocalFree(buf);
839 }
840 }
841 return len;
842 }
843
844 typedef BOOL (*CertCompareFunc)(PCCERT_CONTEXT pCertContext, DWORD dwType,
845 DWORD dwFlags, const void *pvPara);
846
847 static BOOL compare_cert_any(PCCERT_CONTEXT pCertContext, DWORD dwType,
848 DWORD dwFlags, const void *pvPara)
849 {
850 return TRUE;
851 }
852
853 static BOOL compare_cert_by_md5_hash(PCCERT_CONTEXT pCertContext, DWORD dwType,
854 DWORD dwFlags, const void *pvPara)
855 {
856 BOOL ret;
857 BYTE hash[16];
858 DWORD size = sizeof(hash);
859
860 ret = CertGetCertificateContextProperty(pCertContext,
861 CERT_MD5_HASH_PROP_ID, hash, &size);
862 if (ret)
863 {
864 const CRYPT_HASH_BLOB *pHash = (const CRYPT_HASH_BLOB *)pvPara;
865
866 if (size == pHash->cbData)
867 ret = !memcmp(pHash->pbData, hash, size);
868 else
869 ret = FALSE;
870 }
871 return ret;
872 }
873
874 static BOOL compare_cert_by_sha1_hash(PCCERT_CONTEXT pCertContext, DWORD dwType,
875 DWORD dwFlags, const void *pvPara)
876 {
877 BOOL ret;
878 BYTE hash[20];
879 DWORD size = sizeof(hash);
880
881 ret = CertGetCertificateContextProperty(pCertContext,
882 CERT_SHA1_HASH_PROP_ID, hash, &size);
883 if (ret)
884 {
885 const CRYPT_HASH_BLOB *pHash = (const CRYPT_HASH_BLOB *)pvPara;
886
887 if (size == pHash->cbData)
888 ret = !memcmp(pHash->pbData, hash, size);
889 else
890 ret = FALSE;
891 }
892 return ret;
893 }
894
895 static BOOL compare_cert_by_name(PCCERT_CONTEXT pCertContext, DWORD dwType,
896 DWORD dwFlags, const void *pvPara)
897 {
898 CERT_NAME_BLOB *blob = (CERT_NAME_BLOB *)pvPara, *toCompare;
899 BOOL ret;
900
901 if (dwType & CERT_INFO_SUBJECT_FLAG)
902 toCompare = &pCertContext->pCertInfo->Subject;
903 else
904 toCompare = &pCertContext->pCertInfo->Issuer;
905 ret = CertCompareCertificateName(pCertContext->dwCertEncodingType,
906 toCompare, blob);
907 return ret;
908 }
909
910 static BOOL compare_cert_by_subject_cert(PCCERT_CONTEXT pCertContext,
911 DWORD dwType, DWORD dwFlags, const void *pvPara)
912 {
913 CERT_INFO *pCertInfo = (CERT_INFO *)pvPara;
914 BOOL ret;
915
916 /* Matching serial number and subject match.. */
917 ret = CertCompareCertificateName(pCertContext->dwCertEncodingType,
918 &pCertInfo->Issuer, &pCertContext->pCertInfo->Subject);
919 if (ret)
920 ret = CertCompareIntegerBlob(&pCertContext->pCertInfo->SerialNumber,
921 &pCertInfo->SerialNumber);
922 else
923 {
924 /* failing that, if the serial number and issuer match, we match */
925 ret = CertCompareIntegerBlob(&pCertContext->pCertInfo->SerialNumber,
926 &pCertInfo->SerialNumber);
927 if (ret)
928 ret = CertCompareCertificateName(pCertContext->dwCertEncodingType,
929 &pCertInfo->Issuer, &pCertContext->pCertInfo->Issuer);
930 }
931 TRACE("returning %d\n", ret);
932 return ret;
933 }
934
935 static BOOL compare_cert_by_cert_id(PCCERT_CONTEXT pCertContext, DWORD dwType,
936 DWORD dwFlags, const void *pvPara)
937 {
938 CERT_ID *id = (CERT_ID *)pvPara;
939 BOOL ret;
940
941 switch (id->dwIdChoice)
942 {
943 case CERT_ID_ISSUER_SERIAL_NUMBER:
944 ret = CertCompareCertificateName(pCertContext->dwCertEncodingType,
945 &pCertContext->pCertInfo->Issuer, &id->u.IssuerSerialNumber.Issuer);
946 if (ret)
947 ret = CertCompareIntegerBlob(&pCertContext->pCertInfo->SerialNumber,
948 &id->u.IssuerSerialNumber.SerialNumber);
949 break;
950 case CERT_ID_SHA1_HASH:
951 ret = compare_cert_by_sha1_hash(pCertContext, dwType, dwFlags,
952 &id->u.HashId);
953 break;
954 case CERT_ID_KEY_IDENTIFIER:
955 {
956 DWORD size = 0;
957
958 ret = CertGetCertificateContextProperty(pCertContext,
959 CERT_KEY_IDENTIFIER_PROP_ID, NULL, &size);
960 if (ret && size == id->u.KeyId.cbData)
961 {
962 LPBYTE buf = CryptMemAlloc(size);
963
964 if (buf)
965 {
966 CertGetCertificateContextProperty(pCertContext,
967 CERT_KEY_IDENTIFIER_PROP_ID, buf, &size);
968 ret = !memcmp(buf, id->u.KeyId.pbData, size);
969 CryptMemFree(buf);
970 }
971 }
972 else
973 ret = FALSE;
974 break;
975 }
976 default:
977 ret = FALSE;
978 break;
979 }
980 return ret;
981 }
982
983 static BOOL compare_cert_by_issuer(PCCERT_CONTEXT pCertContext, DWORD dwType,
984 DWORD dwFlags, const void *pvPara)
985 {
986 BOOL ret = FALSE;
987 PCCERT_CONTEXT subject = (PCCERT_CONTEXT)pvPara;
988 PCERT_EXTENSION ext;
989 DWORD size;
990
991 if ((ext = CertFindExtension(szOID_AUTHORITY_KEY_IDENTIFIER,
992 subject->pCertInfo->cExtension, subject->pCertInfo->rgExtension)))
993 {
994 CERT_AUTHORITY_KEY_ID_INFO *info;
995
996 ret = CryptDecodeObjectEx(subject->dwCertEncodingType,
997 X509_AUTHORITY_KEY_ID, ext->Value.pbData, ext->Value.cbData,
998 CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG, NULL,
999 &info, &size);
1000 if (ret)
1001 {
1002 CERT_ID id;
1003
1004 if (info->CertIssuer.cbData && info->CertSerialNumber.cbData)
1005 {
1006 id.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
1007 memcpy(&id.u.IssuerSerialNumber.Issuer, &info->CertIssuer,
1008 sizeof(CERT_NAME_BLOB));
1009 memcpy(&id.u.IssuerSerialNumber.SerialNumber,
1010 &info->CertSerialNumber, sizeof(CRYPT_INTEGER_BLOB));
1011 ret = compare_cert_by_cert_id(pCertContext, dwType, dwFlags,
1012 &id);
1013 }
1014 else if (info->KeyId.cbData)
1015 {
1016 id.dwIdChoice = CERT_ID_KEY_IDENTIFIER;
1017 memcpy(&id.u.KeyId, &info->KeyId, sizeof(CRYPT_HASH_BLOB));
1018 ret = compare_cert_by_cert_id(pCertContext, dwType, dwFlags,
1019 &id);
1020 }
1021 else
1022 ret = FALSE;
1023 LocalFree(info);
1024 }
1025 }
1026 else if ((ext = CertFindExtension(szOID_AUTHORITY_KEY_IDENTIFIER2,
1027 subject->pCertInfo->cExtension, subject->pCertInfo->rgExtension)))
1028 {
1029 CERT_AUTHORITY_KEY_ID2_INFO *info;
1030
1031 ret = CryptDecodeObjectEx(subject->dwCertEncodingType,
1032 X509_AUTHORITY_KEY_ID2, ext->Value.pbData, ext->Value.cbData,
1033 CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG, NULL,
1034 &info, &size);
1035 if (ret)
1036 {
1037 CERT_ID id;
1038
1039 if (info->AuthorityCertIssuer.cAltEntry &&
1040 info->AuthorityCertSerialNumber.cbData)
1041 {
1042 PCERT_ALT_NAME_ENTRY directoryName = NULL;
1043 DWORD i;
1044
1045 for (i = 0; !directoryName &&
1046 i < info->AuthorityCertIssuer.cAltEntry; i++)
1047 if (info->AuthorityCertIssuer.rgAltEntry[i].dwAltNameChoice
1048 == CERT_ALT_NAME_DIRECTORY_NAME)
1049 directoryName =
1050 &info->AuthorityCertIssuer.rgAltEntry[i];
1051 if (directoryName)
1052 {
1053 id.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
1054 memcpy(&id.u.IssuerSerialNumber.Issuer,
1055 &directoryName->u.DirectoryName, sizeof(CERT_NAME_BLOB));
1056 memcpy(&id.u.IssuerSerialNumber.SerialNumber,
1057 &info->AuthorityCertSerialNumber,
1058 sizeof(CRYPT_INTEGER_BLOB));
1059 ret = compare_cert_by_cert_id(pCertContext, dwType, dwFlags,
1060 &id);
1061 }
1062 else
1063 {
1064 FIXME("no supported name type in authority key id2\n");
1065 ret = FALSE;
1066 }
1067 }
1068 else if (info->KeyId.cbData)
1069 {
1070 id.dwIdChoice = CERT_ID_KEY_IDENTIFIER;
1071 memcpy(&id.u.KeyId, &info->KeyId, sizeof(CRYPT_HASH_BLOB));
1072 ret = compare_cert_by_cert_id(pCertContext, dwType, dwFlags,
1073 &id);
1074 }
1075 else
1076 ret = FALSE;
1077 LocalFree(info);
1078 }
1079 }
1080 else
1081 ret = compare_cert_by_name(pCertContext,
1082 CERT_COMPARE_NAME | CERT_COMPARE_SUBJECT_CERT, dwFlags,
1083 &subject->pCertInfo->Issuer);
1084 return ret;
1085 }
1086
1087 PCCERT_CONTEXT WINAPI CertFindCertificateInStore(HCERTSTORE hCertStore,
1088 DWORD dwCertEncodingType, DWORD dwFlags, DWORD dwType, const void *pvPara,
1089 PCCERT_CONTEXT pPrevCertContext)
1090 {
1091 PCCERT_CONTEXT ret;
1092 CertCompareFunc compare;
1093
1094 TRACE("(%p, %d, %d, %d, %p, %p)\n", hCertStore, dwCertEncodingType,
1095 dwFlags, dwType, pvPara, pPrevCertContext);
1096
1097 switch (dwType >> CERT_COMPARE_SHIFT)
1098 {
1099 case CERT_COMPARE_ANY:
1100 compare = compare_cert_any;
1101 break;
1102 case CERT_COMPARE_MD5_HASH:
1103 compare = compare_cert_by_md5_hash;
1104 break;
1105 case CERT_COMPARE_SHA1_HASH:
1106 compare = compare_cert_by_sha1_hash;
1107 break;
1108 case CERT_COMPARE_NAME:
1109 compare = compare_cert_by_name;
1110 break;
1111 case CERT_COMPARE_SUBJECT_CERT:
1112 compare = compare_cert_by_subject_cert;
1113 break;
1114 case CERT_COMPARE_CERT_ID:
1115 compare = compare_cert_by_cert_id;
1116 break;
1117 case CERT_COMPARE_ISSUER_OF:
1118 compare = compare_cert_by_issuer;
1119 break;
1120 default:
1121 FIXME("find type %08x unimplemented\n", dwType);
1122 compare = NULL;
1123 }
1124
1125 if (compare)
1126 {
1127 BOOL matches = FALSE;
1128
1129 ret = pPrevCertContext;
1130 do {
1131 ret = CertEnumCertificatesInStore(hCertStore, ret);
1132 if (ret)
1133 matches = compare(ret, dwType, dwFlags, pvPara);
1134 } while (ret != NULL && !matches);
1135 if (!ret)
1136 SetLastError(CRYPT_E_NOT_FOUND);
1137 }
1138 else
1139 {
1140 SetLastError(CRYPT_E_NOT_FOUND);
1141 ret = NULL;
1142 }
1143 TRACE("returning %p\n", ret);
1144 return ret;
1145 }
1146
1147 PCCERT_CONTEXT WINAPI CertGetSubjectCertificateFromStore(HCERTSTORE hCertStore,
1148 DWORD dwCertEncodingType, PCERT_INFO pCertId)
1149 {
1150 TRACE("(%p, %08x, %p)\n", hCertStore, dwCertEncodingType, pCertId);
1151
1152 if (!pCertId)
1153 {
1154 SetLastError(E_INVALIDARG);
1155 return NULL;
1156 }
1157 return CertFindCertificateInStore(hCertStore, dwCertEncodingType, 0,
1158 CERT_FIND_SUBJECT_CERT, pCertId, NULL);
1159 }
1160
1161 BOOL WINAPI CertVerifySubjectCertificateContext(PCCERT_CONTEXT pSubject,
1162 PCCERT_CONTEXT pIssuer, DWORD *pdwFlags)
1163 {
1164 static const DWORD supportedFlags = CERT_STORE_REVOCATION_FLAG |
1165 CERT_STORE_SIGNATURE_FLAG | CERT_STORE_TIME_VALIDITY_FLAG;
1166
1167 if (*pdwFlags & ~supportedFlags)
1168 {
1169 SetLastError(E_INVALIDARG);
1170 return FALSE;
1171 }
1172 if (*pdwFlags & CERT_STORE_REVOCATION_FLAG)
1173 {
1174 DWORD flags = 0;
1175 PCCRL_CONTEXT crl = CertGetCRLFromStore(pSubject->hCertStore, pSubject,
1176 NULL, &flags);
1177
1178 /* FIXME: what if the CRL has expired? */
1179 if (crl)
1180 {
1181 if (CertVerifyCRLRevocation(pSubject->dwCertEncodingType,
1182 pSubject->pCertInfo, 1, (PCRL_INFO *)&crl->pCrlInfo))
1183 *pdwFlags &= CERT_STORE_REVOCATION_FLAG;
1184 }
1185 else
1186 *pdwFlags |= CERT_STORE_NO_CRL_FLAG;
1187 }
1188 if (*pdwFlags & CERT_STORE_TIME_VALIDITY_FLAG)
1189 {
1190 if (0 == CertVerifyTimeValidity(NULL, pSubject->pCertInfo))
1191 *pdwFlags &= ~CERT_STORE_TIME_VALIDITY_FLAG;
1192 }
1193 if (*pdwFlags & CERT_STORE_SIGNATURE_FLAG)
1194 {
1195 if (CryptVerifyCertificateSignatureEx(0, pSubject->dwCertEncodingType,
1196 CRYPT_VERIFY_CERT_SIGN_SUBJECT_CERT, (void *)pSubject,
1197 CRYPT_VERIFY_CERT_SIGN_ISSUER_CERT, (void *)pIssuer, 0, NULL))
1198 *pdwFlags &= ~CERT_STORE_SIGNATURE_FLAG;
1199 }
1200 return TRUE;
1201 }
1202
1203 PCCERT_CONTEXT WINAPI CertGetIssuerCertificateFromStore(HCERTSTORE hCertStore,
1204 PCCERT_CONTEXT pSubjectContext, PCCERT_CONTEXT pPrevIssuerContext,
1205 DWORD *pdwFlags)
1206 {
1207 PCCERT_CONTEXT ret;
1208
1209 TRACE("(%p, %p, %p, %08x)\n", hCertStore, pSubjectContext,
1210 pPrevIssuerContext, *pdwFlags);
1211
1212 if (!pSubjectContext)
1213 {
1214 SetLastError(E_INVALIDARG);
1215 return NULL;
1216 }
1217
1218 ret = CertFindCertificateInStore(hCertStore,
1219 pSubjectContext->dwCertEncodingType, 0, CERT_FIND_ISSUER_OF,
1220 pSubjectContext, pPrevIssuerContext);
1221 if (ret)
1222 {
1223 if (!CertVerifySubjectCertificateContext(pSubjectContext, ret,
1224 pdwFlags))
1225 {
1226 CertFreeCertificateContext(ret);
1227 ret = NULL;
1228 }
1229 }
1230 TRACE("returning %p\n", ret);
1231 return ret;
1232 }
1233
1234 PCRYPT_ATTRIBUTE WINAPI CertFindAttribute(LPCSTR pszObjId, DWORD cAttr,
1235 CRYPT_ATTRIBUTE rgAttr[])
1236 {
1237 PCRYPT_ATTRIBUTE ret = NULL;
1238 DWORD i;
1239
1240 TRACE("%s %d %p\n", debugstr_a(pszObjId), cAttr, rgAttr);
1241
1242 if (!cAttr)
1243 return NULL;
1244 if (!pszObjId)
1245 {
1246 SetLastError(ERROR_INVALID_PARAMETER);
1247 return NULL;
1248 }
1249
1250 for (i = 0; !ret && i < cAttr; i++)
1251 if (rgAttr[i].pszObjId && !strcmp(pszObjId, rgAttr[i].pszObjId))
1252 ret = &rgAttr[i];
1253 return ret;
1254 }
1255
1256 PCERT_EXTENSION WINAPI CertFindExtension(LPCSTR pszObjId, DWORD cExtensions,
1257 CERT_EXTENSION rgExtensions[])
1258 {
1259 PCERT_EXTENSION ret = NULL;
1260 DWORD i;
1261
1262 TRACE("%s %d %p\n", debugstr_a(pszObjId), cExtensions, rgExtensions);
1263
1264 if (!cExtensions)
1265 return NULL;
1266 if (!pszObjId)
1267 {
1268 SetLastError(ERROR_INVALID_PARAMETER);
1269 return NULL;
1270 }
1271
1272 for (i = 0; !ret && i < cExtensions; i++)
1273 if (rgExtensions[i].pszObjId && !strcmp(pszObjId,
1274 rgExtensions[i].pszObjId))
1275 ret = &rgExtensions[i];
1276 return ret;
1277 }
1278
1279 PCERT_RDN_ATTR WINAPI CertFindRDNAttr(LPCSTR pszObjId, PCERT_NAME_INFO pName)
1280 {
1281 PCERT_RDN_ATTR ret = NULL;
1282 DWORD i, j;
1283
1284 TRACE("%s %p\n", debugstr_a(pszObjId), pName);
1285
1286 if (!pszObjId)
1287 {
1288 SetLastError(ERROR_INVALID_PARAMETER);
1289 return NULL;
1290 }
1291
1292 for (i = 0; !ret && i < pName->cRDN; i++)
1293 for (j = 0; !ret && j < pName->rgRDN[i].cRDNAttr; j++)
1294 if (pName->rgRDN[i].rgRDNAttr[j].pszObjId && !strcmp(pszObjId,
1295 pName->rgRDN[i].rgRDNAttr[j].pszObjId))
1296 ret = &pName->rgRDN[i].rgRDNAttr[j];
1297 return ret;
1298 }
1299
1300 LONG WINAPI CertVerifyTimeValidity(LPFILETIME pTimeToVerify,
1301 PCERT_INFO pCertInfo)
1302 {
1303 FILETIME fileTime;
1304 LONG ret;
1305
1306 if (!pTimeToVerify)
1307 {
1308 SYSTEMTIME sysTime;
1309
1310 GetSystemTime(&sysTime);
1311 SystemTimeToFileTime(&sysTime, &fileTime);
1312 pTimeToVerify = &fileTime;
1313 }
1314 if ((ret = CompareFileTime(pTimeToVerify, &pCertInfo->NotBefore)) >= 0)
1315 {
1316 ret = CompareFileTime(pTimeToVerify, &pCertInfo->NotAfter);
1317 if (ret < 0)
1318 ret = 0;
1319 }
1320 return ret;
1321 }
1322
1323 BOOL WINAPI CertVerifyValidityNesting(PCERT_INFO pSubjectInfo,
1324 PCERT_INFO pIssuerInfo)
1325 {
1326 TRACE("(%p, %p)\n", pSubjectInfo, pIssuerInfo);
1327
1328 return CertVerifyTimeValidity(&pSubjectInfo->NotBefore, pIssuerInfo) == 0
1329 && CertVerifyTimeValidity(&pSubjectInfo->NotAfter, pIssuerInfo) == 0;
1330 }
1331
1332 BOOL WINAPI CryptHashCertificate(HCRYPTPROV_LEGACY hCryptProv, ALG_ID Algid,
1333 DWORD dwFlags, const BYTE *pbEncoded, DWORD cbEncoded, BYTE *pbComputedHash,
1334 DWORD *pcbComputedHash)
1335 {
1336 BOOL ret = TRUE;
1337 HCRYPTHASH hHash = 0;
1338
1339 TRACE("(%08lx, %d, %08x, %p, %d, %p, %p)\n", hCryptProv, Algid, dwFlags,
1340 pbEncoded, cbEncoded, pbComputedHash, pcbComputedHash);
1341
1342 if (!hCryptProv)
1343 hCryptProv = CRYPT_GetDefaultProvider();
1344 if (!Algid)
1345 Algid = CALG_SHA1;
1346 if (ret)
1347 {
1348 ret = CryptCreateHash(hCryptProv, Algid, 0, 0, &hHash);
1349 if (ret)
1350 {
1351 ret = CryptHashData(hHash, pbEncoded, cbEncoded, 0);
1352 if (ret)
1353 ret = CryptGetHashParam(hHash, HP_HASHVAL, pbComputedHash,
1354 pcbComputedHash, 0);
1355 CryptDestroyHash(hHash);
1356 }
1357 }
1358 return ret;
1359 }
1360
1361 BOOL WINAPI CryptHashPublicKeyInfo(HCRYPTPROV_LEGACY hCryptProv, ALG_ID Algid,
1362 DWORD dwFlags, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo,
1363 BYTE *pbComputedHash, DWORD *pcbComputedHash)
1364 {
1365 BOOL ret = TRUE;
1366 HCRYPTHASH hHash = 0;
1367
1368 TRACE("(%08lx, %d, %08x, %d, %p, %p, %p)\n", hCryptProv, Algid, dwFlags,
1369 dwCertEncodingType, pInfo, pbComputedHash, pcbComputedHash);
1370
1371 if (!hCryptProv)
1372 hCryptProv = CRYPT_GetDefaultProvider();
1373 if (!Algid)
1374 Algid = CALG_MD5;
1375 if (ret)
1376 {
1377 BYTE *buf;
1378 DWORD size = 0;
1379
1380 ret = CryptEncodeObjectEx(dwCertEncodingType, X509_PUBLIC_KEY_INFO,
1381 pInfo, CRYPT_ENCODE_ALLOC_FLAG, NULL, &buf, &size);
1382 if (ret)
1383 {
1384 ret = CryptCreateHash(hCryptProv, Algid, 0, 0, &hHash);
1385 if (ret)
1386 {
1387 ret = CryptHashData(hHash, buf, size, 0);
1388 if (ret)
1389 ret = CryptGetHashParam(hHash, HP_HASHVAL, pbComputedHash,
1390 pcbComputedHash, 0);
1391 CryptDestroyHash(hHash);
1392 }
1393 LocalFree(buf);
1394 }
1395 }
1396 return ret;
1397 }
1398
1399 BOOL WINAPI CryptSignCertificate(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv,
1400 DWORD dwKeySpec, DWORD dwCertEncodingType, const BYTE *pbEncodedToBeSigned,
1401 DWORD cbEncodedToBeSigned, PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm,
1402 const void *pvHashAuxInfo, BYTE *pbSignature, DWORD *pcbSignature)
1403 {
1404 BOOL ret;
1405 PCCRYPT_OID_INFO info;
1406 HCRYPTHASH hHash;
1407
1408 TRACE("(%08lx, %d, %d, %p, %d, %p, %p, %p, %p)\n", hCryptProv,
1409 dwKeySpec, dwCertEncodingType, pbEncodedToBeSigned, cbEncodedToBeSigned,
1410 pSignatureAlgorithm, pvHashAuxInfo, pbSignature, pcbSignature);
1411
1412 info = CryptFindOIDInfo(CRYPT_OID_INFO_OID_KEY,
1413 pSignatureAlgorithm->pszObjId, 0);
1414 if (!info)
1415 {
1416 SetLastError(NTE_BAD_ALGID);
1417 return FALSE;
1418 }
1419 if (info->dwGroupId == CRYPT_HASH_ALG_OID_GROUP_ID)
1420 {
1421 if (!hCryptProv)
1422 hCryptProv = CRYPT_GetDefaultProvider();
1423 ret = CryptCreateHash(hCryptProv, info->u.Algid, 0, 0, &hHash);
1424 if (ret)
1425 {
1426 ret = CryptHashData(hHash, pbEncodedToBeSigned,
1427 cbEncodedToBeSigned, 0);
1428 if (ret)
1429 ret = CryptGetHashParam(hHash, HP_HASHVAL, pbSignature,
1430 pcbSignature, 0);
1431 CryptDestroyHash(hHash);
1432 }
1433 }
1434 else
1435 {
1436 if (!hCryptProv)
1437 {
1438 SetLastError(ERROR_INVALID_PARAMETER);
1439 ret = FALSE;
1440 }
1441 else
1442 {
1443 ret = CryptCreateHash(hCryptProv, info->u.Algid, 0, 0, &hHash);
1444 if (ret)
1445 {
1446 ret = CryptHashData(hHash, pbEncodedToBeSigned,
1447 cbEncodedToBeSigned, 0);
1448 if (ret)
1449 ret = CryptSignHashW(hHash, dwKeySpec, NULL, 0, pbSignature,
1450 pcbSignature);
1451 CryptDestroyHash(hHash);
1452 }
1453 }
1454 }
1455 return ret;
1456 }
1457
1458 BOOL WINAPI CryptSignAndEncodeCertificate(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv,
1459 DWORD dwKeySpec, DWORD dwCertEncodingType, LPCSTR lpszStructType,
1460 const void *pvStructInfo, PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm,
1461 const void *pvHashAuxInfo, BYTE *pbEncoded, DWORD *pcbEncoded)
1462 {
1463 BOOL ret;
1464 DWORD encodedSize, hashSize;
1465
1466 TRACE("(%08lx, %d, %d, %s, %p, %p, %p, %p, %p)\n", hCryptProv, dwKeySpec,
1467 dwCertEncodingType, debugstr_a(lpszStructType), pvStructInfo,
1468 pSignatureAlgorithm, pvHashAuxInfo, pbEncoded, pcbEncoded);
1469
1470 ret = CryptEncodeObject(dwCertEncodingType, lpszStructType, pvStructInfo,
1471 NULL, &encodedSize);
1472 if (ret)
1473 {
1474 PBYTE encoded = CryptMemAlloc(encodedSize);
1475
1476 if (encoded)
1477 {
1478 ret = CryptEncodeObject(dwCertEncodingType, lpszStructType,
1479 pvStructInfo, encoded, &encodedSize);
1480 if (ret)
1481 {
1482 ret = CryptSignCertificate(hCryptProv, dwKeySpec,
1483 dwCertEncodingType, encoded, encodedSize, pSignatureAlgorithm,
1484 pvHashAuxInfo, NULL, &hashSize);
1485 if (ret)
1486 {
1487 PBYTE hash = CryptMemAlloc(hashSize);
1488
1489 if (hash)
1490 {
1491 ret = CryptSignCertificate(hCryptProv, dwKeySpec,
1492 dwCertEncodingType, encoded, encodedSize,
1493 pSignatureAlgorithm, pvHashAuxInfo, hash, &hashSize);
1494 if (ret)
1495 {
1496 CERT_SIGNED_CONTENT_INFO info = { { 0 } };
1497
1498 info.ToBeSigned.cbData = encodedSize;
1499 info.ToBeSigned.pbData = encoded;
1500 memcpy(&info.SignatureAlgorithm,
1501 pSignatureAlgorithm,
1502 sizeof(info.SignatureAlgorithm));
1503 info.Signature.cbData = hashSize;
1504 info.Signature.pbData = hash;
1505 info.Signature.cUnusedBits = 0;
1506 ret = CryptEncodeObject(dwCertEncodingType,
1507 X509_CERT, &info, pbEncoded, pcbEncoded);
1508 }
1509 CryptMemFree(hash);
1510 }
1511 }
1512 }
1513 CryptMemFree(encoded);
1514 }
1515 }
1516 return ret;
1517 }
1518
1519 BOOL WINAPI CryptVerifyCertificateSignature(HCRYPTPROV_LEGACY hCryptProv,
1520 DWORD dwCertEncodingType, const BYTE *pbEncoded, DWORD cbEncoded,
1521 PCERT_PUBLIC_KEY_INFO pPublicKey)
1522 {
1523 return CryptVerifyCertificateSignatureEx(hCryptProv, dwCertEncodingType,
1524 CRYPT_VERIFY_CERT_SIGN_SUBJECT_BLOB, (void *)pbEncoded,
1525 CRYPT_VERIFY_CERT_SIGN_ISSUER_PUBKEY, pPublicKey, 0, NULL);
1526 }
1527
1528 static BOOL CRYPT_VerifyCertSignatureFromPublicKeyInfo(HCRYPTPROV_LEGACY hCryptProv,
1529 DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pubKeyInfo,
1530 const CERT_SIGNED_CONTENT_INFO *signedCert)
1531 {
1532 BOOL ret;
1533 HCRYPTKEY key;
1534 PCCRYPT_OID_INFO info;
1535 ALG_ID pubKeyID, hashID;
1536
1537 info = CryptFindOIDInfo(CRYPT_OID_INFO_OID_KEY,
1538 signedCert->SignatureAlgorithm.pszObjId, 0);
1539 if (!info || info->dwGroupId != CRYPT_SIGN_ALG_OID_GROUP_ID)
1540 {
1541 SetLastError(NTE_BAD_ALGID);
1542 return FALSE;
1543 }
1544 hashID = info->u.Algid;
1545 if (info->ExtraInfo.cbData >= sizeof(ALG_ID))
1546 pubKeyID = *(ALG_ID *)info->ExtraInfo.pbData;
1547 else
1548 pubKeyID = hashID;
1549 /* Load the default provider if necessary */
1550 if (!hCryptProv)
1551 hCryptProv = CRYPT_GetDefaultProvider();
1552 ret = CryptImportPublicKeyInfoEx(hCryptProv, dwCertEncodingType,
1553 pubKeyInfo, pubKeyID, 0, NULL, &key);
1554 if (ret)
1555 {
1556 HCRYPTHASH hash;
1557
1558 ret = CryptCreateHash(hCryptProv, hashID, 0, 0, &hash);
1559 if (ret)
1560 {
1561 ret = CryptHashData(hash, signedCert->ToBeSigned.pbData,
1562 signedCert->ToBeSigned.cbData, 0);
1563 if (ret)
1564 ret = CryptVerifySignatureW(hash, signedCert->Signature.pbData,
1565 signedCert->Signature.cbData, key, NULL, 0);
1566 CryptDestroyHash(hash);
1567 }
1568 CryptDestroyKey(key);
1569 }
1570 return ret;
1571 }
1572
1573 BOOL WINAPI CryptVerifyCertificateSignatureEx(HCRYPTPROV_LEGACY hCryptProv,
1574 DWORD dwCertEncodingType, DWORD dwSubjectType, void *pvSubject,
1575 DWORD dwIssuerType, void *pvIssuer, DWORD dwFlags, void *pvReserved)
1576 {
1577 BOOL ret = TRUE;
1578 CRYPT_DATA_BLOB subjectBlob;
1579
1580 TRACE("(%08lx, %d, %d, %p, %d, %p, %08x, %p)\n", hCryptProv,
1581 dwCertEncodingType, dwSubjectType, pvSubject, dwIssuerType, pvIssuer,
1582 dwFlags, pvReserved);
1583
1584 switch (dwSubjectType)
1585 {
1586 case CRYPT_VERIFY_CERT_SIGN_SUBJECT_BLOB:
1587 {
1588 PCRYPT_DATA_BLOB blob = (PCRYPT_DATA_BLOB)pvSubject;
1589
1590 subjectBlob.pbData = blob->pbData;
1591 subjectBlob.cbData = blob->cbData;
1592 break;
1593 }
1594 case CRYPT_VERIFY_CERT_SIGN_SUBJECT_CERT:
1595 {
1596 PCERT_CONTEXT context = (PCERT_CONTEXT)pvSubject;
1597
1598 subjectBlob.pbData = context->pbCertEncoded;
1599 subjectBlob.cbData = context->cbCertEncoded;
1600 break;
1601 }
1602 case CRYPT_VERIFY_CERT_SIGN_SUBJECT_CRL:
1603 {
1604 PCRL_CONTEXT context = (PCRL_CONTEXT)pvSubject;
1605
1606 subjectBlob.pbData = context->pbCrlEncoded;
1607 subjectBlob.cbData = context->cbCrlEncoded;
1608 break;
1609 }
1610 default:
1611 SetLastError(E_INVALIDARG);
1612 ret = FALSE;
1613 }
1614
1615 if (ret)
1616 {
1617 PCERT_SIGNED_CONTENT_INFO signedCert = NULL;
1618 DWORD size = 0;
1619
1620 ret = CryptDecodeObjectEx(dwCertEncodingType, X509_CERT,
1621 subjectBlob.pbData, subjectBlob.cbData,
1622 CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG, NULL,
1623 (BYTE *)&signedCert, &size);
1624 if (ret)
1625 {
1626 switch (dwIssuerType)
1627 {
1628 case CRYPT_VERIFY_CERT_SIGN_ISSUER_PUBKEY:
1629 ret = CRYPT_VerifyCertSignatureFromPublicKeyInfo(hCryptProv,
1630 dwCertEncodingType, (PCERT_PUBLIC_KEY_INFO)pvIssuer,
1631 signedCert);
1632 break;
1633 case CRYPT_VERIFY_CERT_SIGN_ISSUER_CERT:
1634 ret = CRYPT_VerifyCertSignatureFromPublicKeyInfo(hCryptProv,
1635 dwCertEncodingType,
1636 &((PCCERT_CONTEXT)pvIssuer)->pCertInfo->SubjectPublicKeyInfo,
1637 signedCert);
1638 break;
1639 case CRYPT_VERIFY_CERT_SIGN_ISSUER_CHAIN:
1640 FIXME("CRYPT_VERIFY_CERT_SIGN_ISSUER_CHAIN: stub\n");
1641 ret = FALSE;
1642 break;
1643 case CRYPT_VERIFY_CERT_SIGN_ISSUER_NULL:
1644 if (pvIssuer)
1645 {
1646 SetLastError(E_INVALIDARG);
1647 ret = FALSE;
1648 }
1649 else
1650 {
1651 FIXME("unimplemented for NULL signer\n");
1652 SetLastError(E_INVALIDARG);
1653 ret = FALSE;
1654 }
1655 break;
1656 default:
1657 SetLastError(E_INVALIDARG);
1658 ret = FALSE;
1659 }
1660 LocalFree(signedCert);
1661 }
1662 }
1663 return ret;
1664 }
1665
1666 BOOL WINAPI CertGetEnhancedKeyUsage(PCCERT_CONTEXT pCertContext, DWORD dwFlags,
1667 PCERT_ENHKEY_USAGE pUsage, DWORD *pcbUsage)
1668 {
1669 PCERT_ENHKEY_USAGE usage = NULL;
1670 DWORD bytesNeeded;
1671 BOOL ret = TRUE;
1672
1673 if (!pCertContext || !pcbUsage)
1674 {
1675 SetLastError(ERROR_INVALID_PARAMETER);
1676 return FALSE;
1677 }
1678
1679 TRACE("(%p, %08x, %p, %d)\n", pCertContext, dwFlags, pUsage, *pcbUsage);
1680
1681 if (!(dwFlags & CERT_FIND_EXT_ONLY_ENHKEY_USAGE_FLAG))
1682 {
1683 DWORD propSize = 0;
1684
1685 if (CertGetCertificateContextProperty(pCertContext,
1686 CERT_ENHKEY_USAGE_PROP_ID, NULL, &propSize))
1687 {
1688 LPBYTE buf = CryptMemAlloc(propSize);
1689
1690 if (buf)
1691 {
1692 if (CertGetCertificateContextProperty(pCertContext,
1693 CERT_ENHKEY_USAGE_PROP_ID, buf, &propSize))
1694 {
1695 ret = CryptDecodeObjectEx(pCertContext->dwCertEncodingType,
1696 X509_ENHANCED_KEY_USAGE, buf, propSize,
1697 CRYPT_ENCODE_ALLOC_FLAG, NULL, &usage, &bytesNeeded);
1698 }
1699 CryptMemFree(buf);
1700 }
1701 }
1702 }
1703 if (!usage && !(dwFlags & CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG))
1704 {
1705 PCERT_EXTENSION ext = CertFindExtension(szOID_ENHANCED_KEY_USAGE,
1706 pCertContext->pCertInfo->cExtension,
1707 pCertContext->pCertInfo->rgExtension);
1708
1709 if (ext)
1710 {
1711 ret = CryptDecodeObjectEx(pCertContext->dwCertEncodingType,
1712 X509_ENHANCED_KEY_USAGE, ext->Value.pbData, ext->Value.cbData,
1713 CRYPT_ENCODE_ALLOC_FLAG, NULL, &usage, &bytesNeeded);
1714 }
1715 }
1716 if (!usage)
1717 {
1718 /* If a particular location is specified, this should fail. Otherwise
1719 * it should succeed with an empty usage. (This is true on Win2k and
1720 * later, which we emulate.)
1721 */
1722 if (dwFlags)
1723 {
1724 SetLastError(CRYPT_E_NOT_FOUND);
1725 ret = FALSE;
1726 }
1727 else
1728 bytesNeeded = sizeof(CERT_ENHKEY_USAGE);
1729 }
1730
1731 if (ret)
1732 {
1733 if (!pUsage)
1734 *pcbUsage = bytesNeeded;
1735 else if (*pcbUsage < bytesNeeded)
1736 {
1737 SetLastError(ERROR_MORE_DATA);
1738 *pcbUsage = bytesNeeded;
1739 ret = FALSE;
1740 }
1741 else
1742 {
1743 *pcbUsage = bytesNeeded;
1744 if (usage)
1745 {
1746 DWORD i;
1747 LPSTR nextOID = (LPSTR)((LPBYTE)pUsage +
1748 sizeof(CERT_ENHKEY_USAGE) +
1749 usage->cUsageIdentifier * sizeof(LPSTR));
1750
1751 pUsage->cUsageIdentifier = usage->cUsageIdentifier;
1752 pUsage->rgpszUsageIdentifier = (LPSTR *)((LPBYTE)pUsage +
1753 sizeof(CERT_ENHKEY_USAGE));
1754 for (i = 0; i < usage->cUsageIdentifier; i++)
1755 {
1756 pUsage->rgpszUsageIdentifier[i] = nextOID;
1757 strcpy(nextOID, usage->rgpszUsageIdentifier[i]);
1758 nextOID += strlen(nextOID) + 1;
1759 }
1760 }
1761 else
1762 pUsage->cUsageIdentifier = 0;
1763 }
1764 }
1765 if (usage)
1766 LocalFree(usage);
1767 TRACE("returning %d\n", ret);
1768 return ret;
1769 }
1770
1771 BOOL WINAPI CertSetEnhancedKeyUsage(PCCERT_CONTEXT pCertContext,
1772 PCERT_ENHKEY_USAGE pUsage)
1773 {
1774 BOOL ret;
1775
1776 TRACE("(%p, %p)\n", pCertContext, pUsage);
1777
1778 if (pUsage)
1779 {
1780 CRYPT_DATA_BLOB blob = { 0, NULL };
1781
1782 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_ENHANCED_KEY_USAGE,
1783 pUsage, CRYPT_ENCODE_ALLOC_FLAG, NULL, &blob.pbData, &blob.cbData);
1784 if (ret)
1785 {
1786 ret = CertSetCertificateContextProperty(pCertContext,
1787 CERT_ENHKEY_USAGE_PROP_ID, 0, &blob);
1788 LocalFree(blob.pbData);
1789 }
1790 }
1791 else
1792 ret = CertSetCertificateContextProperty(pCertContext,
1793 CERT_ENHKEY_USAGE_PROP_ID, 0, NULL);
1794 return ret;
1795 }
1796
1797 BOOL WINAPI CertAddEnhancedKeyUsageIdentifier(PCCERT_CONTEXT pCertContext,
1798 LPCSTR pszUsageIdentifier)
1799 {
1800 BOOL ret;
1801 DWORD size;
1802
1803 TRACE("(%p, %s)\n", pCertContext, debugstr_a(pszUsageIdentifier));
1804
1805 if (CertGetEnhancedKeyUsage(pCertContext,
1806 CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, NULL, &size))
1807 {
1808 PCERT_ENHKEY_USAGE usage = CryptMemAlloc(size);
1809
1810 if (usage)
1811 {
1812 ret = CertGetEnhancedKeyUsage(pCertContext,
1813 CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, usage, &size);
1814 if (ret)
1815 {
1816 PCERT_ENHKEY_USAGE newUsage = CryptMemAlloc(size +
1817 sizeof(LPSTR) + strlen(pszUsageIdentifier) + 1);
1818
1819 if (newUsage)
1820 {
1821 LPSTR nextOID;
1822 DWORD i;
1823
1824 newUsage->rgpszUsageIdentifier =
1825 (LPSTR *)((LPBYTE)newUsage + sizeof(CERT_ENHKEY_USAGE));
1826 nextOID = (LPSTR)((LPBYTE)newUsage->rgpszUsageIdentifier +
1827 (usage->cUsageIdentifier + 1) * sizeof(LPSTR));
1828 for (i = 0; i < usage->cUsageIdentifier; i++)
1829 {
1830 newUsage->rgpszUsageIdentifier[i] = nextOID;
1831 strcpy(nextOID, usage->rgpszUsageIdentifier[i]);
1832 nextOID += strlen(nextOID) + 1;
1833 }
1834 newUsage->rgpszUsageIdentifier[i] = nextOID;
1835 strcpy(nextOID, pszUsageIdentifier);
1836 newUsage->cUsageIdentifier = i + 1;
1837 ret = CertSetEnhancedKeyUsage(pCertContext, newUsage);
1838 CryptMemFree(newUsage);
1839 }
1840 }
1841 CryptMemFree(usage);
1842 }
1843 else
1844 ret = FALSE;
1845 }
1846 else
1847 {
1848 PCERT_ENHKEY_USAGE usage = CryptMemAlloc(sizeof(CERT_ENHKEY_USAGE) +
1849 sizeof(LPSTR) + strlen(pszUsageIdentifier) + 1);
1850
1851 if (usage)
1852 {
1853 usage->rgpszUsageIdentifier =
1854 (LPSTR *)((LPBYTE)usage + sizeof(CERT_ENHKEY_USAGE));
1855 usage->rgpszUsageIdentifier[0] = (LPSTR)((LPBYTE)usage +
1856 sizeof(CERT_ENHKEY_USAGE) + sizeof(LPSTR));
1857 strcpy(usage->rgpszUsageIdentifier[0], pszUsageIdentifier);
1858 usage->cUsageIdentifier = 1;
1859 ret = CertSetEnhancedKeyUsage(pCertContext, usage);
1860 CryptMemFree(usage);
1861 }
1862 else
1863 ret = FALSE;
1864 }
1865 return ret;
1866 }
1867
1868 BOOL WINAPI CertRemoveEnhancedKeyUsageIdentifier(PCCERT_CONTEXT pCertContext,
1869 LPCSTR pszUsageIdentifier)
1870 {
1871 BOOL ret;
1872 DWORD size;
1873 CERT_ENHKEY_USAGE usage;
1874
1875 TRACE("(%p, %s)\n", pCertContext, debugstr_a(pszUsageIdentifier));
1876
1877 size = sizeof(usage);
1878 ret = CertGetEnhancedKeyUsage(pCertContext,
1879 CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, &usage, &size);
1880 if (!ret && GetLastError() == ERROR_MORE_DATA)
1881 {
1882 PCERT_ENHKEY_USAGE pUsage = CryptMemAlloc(size);
1883
1884 if (pUsage)
1885 {
1886 ret = CertGetEnhancedKeyUsage(pCertContext,
1887 CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, pUsage, &size);
1888 if (ret)
1889 {
1890 if (pUsage->cUsageIdentifier)
1891 {
1892 DWORD i;
1893 BOOL found = FALSE;
1894
1895 for (i = 0; i < pUsage->cUsageIdentifier; i++)
1896 {
1897 if (!strcmp(pUsage->rgpszUsageIdentifier[i],
1898 pszUsageIdentifier))
1899 found = TRUE;
1900 if (found && i < pUsage->cUsageIdentifier - 1)
1901 pUsage->rgpszUsageIdentifier[i] =
1902 pUsage->rgpszUsageIdentifier[i + 1];
1903 }
1904 pUsage->cUsageIdentifier--;
1905 /* Remove the usage if it's empty */
1906 if (pUsage->cUsageIdentifier)
1907 ret = CertSetEnhancedKeyUsage(pCertContext, pUsage);
1908 else
1909 ret = CertSetEnhancedKeyUsage(pCertContext, NULL);
1910 }
1911 }
1912 CryptMemFree(pUsage);
1913 }
1914 else
1915 ret = FALSE;
1916 }
1917 else
1918 {
1919 /* it fit in an empty usage, therefore there's nothing to remove */
1920 ret = TRUE;
1921 }
1922 return ret;
1923 }
1924
1925 BOOL WINAPI CertGetValidUsages(DWORD cCerts, PCCERT_CONTEXT *rghCerts,
1926 int *cNumOIDSs, LPSTR *rghOIDs, DWORD *pcbOIDs)
1927 {
1928 BOOL ret = TRUE;
1929 DWORD i, cbOIDs = 0;
1930 BOOL allUsagesValid = TRUE;
1931 CERT_ENHKEY_USAGE validUsages = { 0, NULL };
1932
1933 TRACE("(%d, %p, %p, %p, %d)\n", cCerts, *rghCerts, cNumOIDSs,
1934 rghOIDs, *pcbOIDs);
1935
1936 for (i = 0; ret && i < cCerts; i++)
1937 {
1938 CERT_ENHKEY_USAGE usage;
1939 DWORD size = sizeof(usage);
1940
1941 ret = CertGetEnhancedKeyUsage(rghCerts[i], 0, &usage, &size);
1942 /* Success is deliberately ignored: it implies all usages are valid */
1943 if (!ret && GetLastError() == ERROR_MORE_DATA)
1944 {
1945 PCERT_ENHKEY_USAGE pUsage = CryptMemAlloc(size);
1946
1947 allUsagesValid = FALSE;
1948 if (pUsage)
1949 {
1950 ret = CertGetEnhancedKeyUsage(rghCerts[i], 0, pUsage, &size);
1951 if (ret)
1952 {
1953 if (!validUsages.cUsageIdentifier)
1954 {
1955 DWORD j;
1956
1957 cbOIDs = pUsage->cUsageIdentifier * sizeof(LPSTR);
1958 validUsages.cUsageIdentifier = pUsage->cUsageIdentifier;
1959 for (j = 0; j < validUsages.cUsageIdentifier; j++)
1960 cbOIDs += lstrlenA(pUsage->rgpszUsageIdentifier[j])
1961 + 1;
1962 validUsages.rgpszUsageIdentifier =
1963 CryptMemAlloc(cbOIDs);
1964 if (validUsages.rgpszUsageIdentifier)
1965 {
1966 LPSTR nextOID = (LPSTR)
1967 ((LPBYTE)validUsages.rgpszUsageIdentifier +
1968 validUsages.cUsageIdentifier * sizeof(LPSTR));
1969
1970 for (j = 0; j < validUsages.cUsageIdentifier; j++)
1971 {
1972 validUsages.rgpszUsageIdentifier[j] = nextOID;
1973 lstrcpyA(validUsages.rgpszUsageIdentifier[j],
1974 pUsage->rgpszUsageIdentifier[j]);
1975 nextOID += lstrlenA(nextOID) + 1;
1976 }
1977 }
1978 else
1979 ret = FALSE;
1980 }
1981 else
1982 {
1983 DWORD j, k, validIndexes = 0, numRemoved = 0;
1984
1985 /* Merge: build a bitmap of all the indexes of
1986 * validUsages.rgpszUsageIdentifier that are in pUsage.
1987 */
1988 for (j = 0; j < pUsage->cUsageIdentifier; j++)
1989 {
1990 for (k = 0; k < validUsages.cUsageIdentifier; k++)
1991 {
1992 if (!strcmp(pUsage->rgpszUsageIdentifier[j],
1993 validUsages.rgpszUsageIdentifier[k]))
1994 {
1995 validIndexes |= (1 << k);
1996 break;
1997 }
1998 }
1999 }
2000 /* Merge by removing from validUsages those that are
2001 * not in the bitmap.
2002 */
2003 for (j = 0; j < validUsages.cUsageIdentifier; j++)
2004 {
2005 if (!(validIndexes & (1 << j)))
2006 {
2007 if (j < validUsages.cUsageIdentifier - 1)
2008 {
2009 memcpy(&validUsages.rgpszUsageIdentifier[j],
2010 &validUsages.rgpszUsageIdentifier[j +
2011 numRemoved + 1],
2012 (validUsages.cUsageIdentifier - numRemoved
2013 - j - 1) * sizeof(LPSTR));
2014 cbOIDs -= lstrlenA(
2015 validUsages.rgpszUsageIdentifier[j]) + 1 +
2016 sizeof(LPSTR);
2017 numRemoved++;
2018 }
2019 else
2020 validUsages.cUsageIdentifier--;
2021 }
2022 }
2023 }
2024 }
2025 CryptMemFree(pUsage);
2026 }
2027 else
2028 ret = FALSE;
2029 }
2030 }
2031 if (ret)
2032 {
2033 if (allUsagesValid)
2034 {
2035 *cNumOIDSs = -1;
2036 *pcbOIDs = 0;
2037 }
2038 else
2039 {
2040 if (!rghOIDs || *pcbOIDs < cbOIDs)
2041 {
2042 *pcbOIDs = cbOIDs;
2043 SetLastError(ERROR_MORE_DATA);
2044 ret = FALSE;
2045 }
2046 else
2047 {
2048 LPSTR nextOID = (LPSTR)((LPBYTE)rghOIDs +
2049 validUsages.cUsageIdentifier * sizeof(LPSTR));
2050
2051 *pcbOIDs = cbOIDs;
2052 *cNumOIDSs = validUsages.cUsageIdentifier;
2053 for (i = 0; i < validUsages.cUsageIdentifier; i++)
2054 {
2055 rghOIDs[i] = nextOID;
2056 lstrcpyA(nextOID, validUsages.rgpszUsageIdentifier[i]);
2057 nextOID += lstrlenA(nextOID) + 1;
2058 }
2059 }
2060 }
2061 }
2062 CryptMemFree(validUsages.rgpszUsageIdentifier);
2063 return ret;
2064 }
2065
2066 /* Sets the CERT_KEY_PROV_INFO_PROP_ID property of context from pInfo, or, if
2067 * pInfo is NULL, from the attributes of hProv.
2068 */
2069 static void CertContext_SetKeyProvInfo(PCCERT_CONTEXT context,
2070 const CRYPT_KEY_PROV_INFO *pInfo, HCRYPTPROV hProv)
2071 {
2072 CRYPT_KEY_PROV_INFO info = { 0 };
2073 BOOL ret;
2074
2075 if (!pInfo)
2076 {
2077 DWORD size;
2078 int len;
2079
2080 ret = CryptGetProvParam(hProv, PP_CONTAINER, NULL, &size, 0);
2081 if (ret)
2082 {
2083 LPSTR szContainer = CryptMemAlloc(size);
2084
2085 if (szContainer)
2086 {
2087 ret = CryptGetProvParam(hProv, PP_CONTAINER,
2088 (BYTE *)szContainer, &size, 0);
2089 if (ret)
2090 {
2091 len = MultiByteToWideChar(CP_ACP, 0, szContainer, -1,
2092 NULL, 0);
2093 if (len)
2094 {
2095 info.pwszContainerName = CryptMemAlloc(len *
2096 sizeof(WCHAR));
2097 len = MultiByteToWideChar(CP_ACP, 0, szContainer, -1,
2098 info.pwszContainerName, len);
2099 }
2100 }
2101 CryptMemFree(szContainer);
2102 }
2103 }
2104 ret = CryptGetProvParam(hProv, PP_NAME, NULL, &size, 0);
2105 if (ret)
2106 {
2107 LPSTR szProvider = CryptMemAlloc(size);
2108
2109 if (szProvider)
2110 {
2111 ret = CryptGetProvParam(hProv, PP_NAME, (BYTE *)szProvider,
2112 &size, 0);
2113 if (ret)
2114 {
2115 len = MultiByteToWideChar(CP_ACP, 0, szProvider, -1,
2116 NULL, 0);
2117 if (len)
2118 {
2119 info.pwszProvName = CryptMemAlloc(len *
2120 sizeof(WCHAR));
2121 len = MultiByteToWideChar(CP_ACP, 0, szProvider, -1,
2122 info.pwszProvName, len);
2123 }
2124 }
2125 CryptMemFree(szProvider);
2126 }
2127 }
2128 size = sizeof(info.dwKeySpec);
2129 /* in case no CRYPT_KEY_PROV_INFO given,
2130 * we always use AT_SIGNATURE key spec
2131 */
2132 info.dwKeySpec = AT_SIGNATURE;
2133 size = sizeof(info.dwProvType);
2134 ret = CryptGetProvParam(hProv, PP_PROVTYPE, (LPBYTE)&info.dwProvType,
2135 &size, 0);
2136 if (!ret)
2137 info.dwProvType = PROV_RSA_FULL;
2138 pInfo = &info;
2139 }
2140
2141 ret = CertSetCertificateContextProperty(context, CERT_KEY_PROV_INFO_PROP_ID,
2142 0, pInfo);
2143
2144 if (pInfo == &info)
2145 {
2146 CryptMemFree(info.pwszContainerName);
2147 CryptMemFree(info.pwszProvName);
2148 }
2149 }
2150
2151 /* Creates a signed certificate context from the unsigned, encoded certificate
2152 * in blob, using the crypto provider hProv and the signature algorithm sigAlgo.
2153 */
2154 static PCCERT_CONTEXT CRYPT_CreateSignedCert(const CRYPT_DER_BLOB *blob,
2155 HCRYPTPROV hProv, DWORD dwKeySpec, PCRYPT_ALGORITHM_IDENTIFIER sigAlgo)
2156 {
2157 PCCERT_CONTEXT context = NULL;
2158 BOOL ret;
2159 DWORD sigSize = 0;
2160
2161 ret = CryptSignCertificate(hProv, dwKeySpec, X509_ASN_ENCODING,
2162 blob->pbData, blob->cbData, sigAlgo, NULL, NULL, &sigSize);
2163 if (ret)
2164 {
2165 LPBYTE sig = CryptMemAlloc(sigSize);
2166
2167 ret = CryptSignCertificate(hProv, dwKeySpec, X509_ASN_ENCODING,
2168 blob->pbData, blob->cbData, sigAlgo, NULL, sig, &sigSize);
2169 if (ret)
2170 {
2171 CERT_SIGNED_CONTENT_INFO signedInfo;
2172 BYTE *encodedSignedCert = NULL;
2173 DWORD encodedSignedCertSize = 0;
2174
2175 signedInfo.ToBeSigned.cbData = blob->cbData;
2176 signedInfo.ToBeSigned.pbData = blob->pbData;
2177 memcpy(&signedInfo.SignatureAlgorithm, sigAlgo,
2178 sizeof(signedInfo.SignatureAlgorithm));
2179 signedInfo.Signature.cbData = sigSize;
2180 signedInfo.Signature.pbData = sig;
2181 signedInfo.Signature.cUnusedBits = 0;
2182 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_CERT,
2183 &signedInfo, CRYPT_ENCODE_ALLOC_FLAG, NULL,
2184 (BYTE *)&encodedSignedCert, &encodedSignedCertSize);
2185 if (ret)
2186 {
2187 context = CertCreateCertificateContext(X509_ASN_ENCODING,
2188 encodedSignedCert, encodedSignedCertSize);
2189 LocalFree(encodedSignedCert);
2190 }
2191 }
2192 CryptMemFree(sig);
2193 }
2194 return context;
2195 }
2196
2197 /* Copies data from the parameters into info, where:
2198 * pSerialNumber: The serial number. Must not be NULL.
2199 * pSubjectIssuerBlob: Specifies both the subject and issuer for info.
2200 * Must not be NULL
2201 * pSignatureAlgorithm: Optional.
2202 * pStartTime: The starting time of the certificate. If NULL, the current
2203 * system time is used.
2204 * pEndTime: The ending time of the certificate. If NULL, one year past the
2205 * starting time is used.
2206 * pubKey: The public key of the certificate. Must not be NULL.
2207 * pExtensions: Extensions to be included with the certificate. Optional.
2208 */
2209 static void CRYPT_MakeCertInfo(PCERT_INFO info, const CRYPT_DATA_BLOB *pSerialNumber,
2210 const CERT_NAME_BLOB *pSubjectIssuerBlob,
2211 const CRYPT_ALGORITHM_IDENTIFIER *pSignatureAlgorithm, const SYSTEMTIME *pStartTime,
2212 const SYSTEMTIME *pEndTime, const CERT_PUBLIC_KEY_INFO *pubKey,
2213 const CERT_EXTENSIONS *pExtensions)
2214 {
2215 static CHAR oid[] = szOID_RSA_SHA1RSA;
2216
2217 assert(info);
2218 assert(pSerialNumber);
2219 assert(pSubjectIssuerBlob);
2220 assert(pubKey);
2221
2222 info->dwVersion = CERT_V3;
2223 info->SerialNumber.cbData = pSerialNumber->cbData;
2224 info->SerialNumber.pbData = pSerialNumber->pbData;
2225 if (pSignatureAlgorithm)
2226 memcpy(&info->SignatureAlgorithm, pSignatureAlgorithm,
2227 sizeof(info->SignatureAlgorithm));
2228 else
2229 {
2230 info->SignatureAlgorithm.pszObjId = oid;
2231 info->SignatureAlgorithm.Parameters.cbData = 0;
2232 info->SignatureAlgorithm.Parameters.pbData = NULL;
2233 }
2234 info->Issuer.cbData = pSubjectIssuerBlob->cbData;
2235 info->Issuer.pbData = pSubjectIssuerBlob->pbData;
2236 if (pStartTime)
2237 SystemTimeToFileTime(pStartTime, &info->NotBefore);
2238 else
2239 GetSystemTimeAsFileTime(&info->NotBefore);
2240 if (pEndTime)
2241 SystemTimeToFileTime(pEndTime, &info->NotAfter);
2242 else
2243 {
2244 SYSTEMTIME endTime;
2245
2246 if (FileTimeToSystemTime(&info->NotBefore, &endTime))
2247 {
2248 endTime.wYear++;
2249 SystemTimeToFileTime(&endTime, &info->NotAfter);
2250 }
2251 }
2252 info->Subject.cbData = pSubjectIssuerBlob->cbData;
2253 info->Subject.pbData = pSubjectIssuerBlob->pbData;
2254 memcpy(&info->SubjectPublicKeyInfo, pubKey,
2255 sizeof(info->SubjectPublicKeyInfo));
2256 if (pExtensions)
2257 {
2258 info->cExtension = pExtensions->cExtension;
2259 info->rgExtension = pExtensions->rgExtension;
2260 }
2261 else
2262 {
2263 info->cExtension = 0;
2264 info->rgExtension = NULL;
2265 }
2266 }
2267
2268 typedef RPC_STATUS (RPC_ENTRY *UuidCreateFunc)(UUID *);
2269 typedef RPC_STATUS (RPC_ENTRY *UuidToStringFunc)(UUID *, unsigned char **);
2270 typedef RPC_STATUS (RPC_ENTRY *RpcStringFreeFunc)(unsigned char **);
2271
2272 static HCRYPTPROV CRYPT_CreateKeyProv(void)
2273 {
2274 HCRYPTPROV hProv = 0;
2275 HMODULE rpcrt = LoadLibraryA("rpcrt4");
2276
2277 if (rpcrt)
2278 {
2279 UuidCreateFunc uuidCreate = (UuidCreateFunc)GetProcAddress(rpcrt,
2280 "UuidCreate");
2281 UuidToStringFunc uuidToString = (UuidToStringFunc)GetProcAddress(rpcrt,
2282 "UuidToStringA");
2283 RpcStringFreeFunc rpcStringFree = (RpcStringFreeFunc)GetProcAddress(
2284 rpcrt, "RpcStringFreeA");
2285
2286 if (uuidCreate && uuidToString && rpcStringFree)
2287 {
2288 UUID uuid;
2289 RPC_STATUS status = uuidCreate(&uuid);
2290
2291 if (status == RPC_S_OK || status == RPC_S_UUID_LOCAL_ONLY)
2292 {
2293 unsigned char *uuidStr;
2294
2295 status = uuidToString(&uuid, &uuidStr);
2296 if (status == RPC_S_OK)
2297 {
2298 BOOL ret = CryptAcquireContextA(&hProv, (LPCSTR)uuidStr,
2299 MS_DEF_PROV_A, PROV_RSA_FULL, CRYPT_NEWKEYSET);
2300
2301 if (ret)
2302 {
2303 HCRYPTKEY key;
2304
2305 ret = CryptGenKey(hProv, AT_SIGNATURE, 0, &key);
2306 if (ret)
2307 CryptDestroyKey(key);
2308 }
2309 rpcStringFree(&uuidStr);
2310 }
2311 }
2312 }
2313 FreeLibrary(rpcrt);
2314 }
2315 return hProv;
2316 }
2317
2318 PCCERT_CONTEXT WINAPI CertCreateSelfSignCertificate(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hProv,
2319 PCERT_NAME_BLOB pSubjectIssuerBlob, DWORD dwFlags,
2320 PCRYPT_KEY_PROV_INFO pKeyProvInfo,
2321 PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm, PSYSTEMTIME pStartTime,
2322 PSYSTEMTIME pEndTime, PCERT_EXTENSIONS pExtensions)
2323 {
2324 PCCERT_CONTEXT context = NULL;
2325 BOOL ret, releaseContext = FALSE;
2326 PCERT_PUBLIC_KEY_INFO pubKey = NULL;
2327 DWORD pubKeySize = 0,dwKeySpec = AT_SIGNATURE;
2328
2329 TRACE("(%08lx, %p, %08x, %p, %p, %p, %p, %p)\n", hProv,
2330 pSubjectIssuerBlob, dwFlags, pKeyProvInfo, pSignatureAlgorithm, pStartTime,
2331 pExtensions, pExtensions);
2332
2333 if(!pSubjectIssuerBlob)
2334 {
2335 SetLastError(ERROR_INVALID_PARAMETER);
2336 return NULL;
2337 }
2338
2339 if (!hProv)
2340 {
2341 if (!pKeyProvInfo)
2342 {
2343 hProv = CRYPT_CreateKeyProv();
2344 releaseContext = TRUE;
2345 }
2346 else if (pKeyProvInfo->dwFlags & CERT_SET_KEY_PROV_HANDLE_PROP_ID)
2347 {
2348 SetLastError(NTE_BAD_FLAGS);
2349 return NULL;
2350 }
2351 else
2352 {
2353 HCRYPTKEY hKey = 0;
2354 /* acquire the context using the given information*/
2355 ret = CryptAcquireContextW(&hProv,pKeyProvInfo->pwszContainerName,
2356 pKeyProvInfo->pwszProvName,pKeyProvInfo->dwProvType,
2357 pKeyProvInfo->dwFlags);
2358 if (!ret)
2359 {
2360 if(GetLastError() != NTE_BAD_KEYSET)
2361 return NULL;
2362 /* create the key set */
2363 ret = CryptAcquireContextW(&hProv,pKeyProvInfo->pwszContainerName,
2364 pKeyProvInfo->pwszProvName,pKeyProvInfo->dwProvType,
2365 pKeyProvInfo->dwFlags|CRYPT_NEWKEYSET);
2366 if (!ret)
2367 return NULL;
2368 }
2369 dwKeySpec = pKeyProvInfo->dwKeySpec;
2370 /* check if the key is here */
2371 ret = CryptGetUserKey(hProv,dwKeySpec,&hKey);
2372 if(!ret)
2373 {
2374 if (NTE_NO_KEY == GetLastError())
2375 { /* generate the key */
2376 ret = CryptGenKey(hProv,dwKeySpec,0,&hKey);
2377 }
2378 if (!ret)
2379 {
2380 CryptReleaseContext(hProv,0);
2381 SetLastError(NTE_BAD_KEYSET);
2382 return NULL;
2383 }
2384 }
2385 CryptDestroyKey(hKey);
2386 releaseContext = TRUE;
2387 }
2388 }
2389 else if (pKeyProvInfo)
2390 {
2391 SetLastError(ERROR_INVALID_PARAMETER);
2392 return NULL;
2393 }
2394
2395 CryptExportPublicKeyInfo(hProv, dwKeySpec, X509_ASN_ENCODING, NULL,
2396 &pubKeySize);
2397 pubKey = CryptMemAlloc(pubKeySize);
2398 if (pubKey)
2399 {
2400 ret = CryptExportPublicKeyInfo(hProv, dwKeySpec, X509_ASN_ENCODING,
2401 pubKey, &pubKeySize);
2402 if (ret)
2403 {
2404 CERT_INFO info = { 0 };
2405 CRYPT_DER_BLOB blob = { 0, NULL };
2406 BYTE serial[16];
2407 CRYPT_DATA_BLOB serialBlob = { sizeof(serial), serial };
2408
2409 CryptGenRandom(hProv, sizeof(serial), serial);
2410 CRYPT_MakeCertInfo(&info, &serialBlob, pSubjectIssuerBlob,
2411 pSignatureAlgorithm, pStartTime, pEndTime, pubKey, pExtensions);
2412 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_CERT_TO_BE_SIGNED,
2413 &info, CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&blob.pbData,
2414 &blob.cbData);
2415 if (ret)
2416 {
2417 if (!(dwFlags & CERT_CREATE_SELFSIGN_NO_SIGN))
2418 context = CRYPT_CreateSignedCert(&blob, hProv,dwKeySpec,
2419 &info.SignatureAlgorithm);
2420 else
2421 context = CertCreateCertificateContext(X509_ASN_ENCODING,
2422 blob.pbData, blob.cbData);
2423 if (context && !(dwFlags & CERT_CREATE_SELFSIGN_NO_KEY_INFO))
2424 CertContext_SetKeyProvInfo(context, pKeyProvInfo, hProv);
2425 LocalFree(blob.pbData);
2426 }
2427 }
2428 CryptMemFree(pubKey);
2429 }
2430 if (releaseContext)
2431 CryptReleaseContext(hProv, 0);
2432 return context;
2433 }