dlls/crypt32/cert.c

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