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2d093499 QL |
1 | /** @file\r |
2 | Pkcs7Verify Driver to produce the UEFI PKCS7 Verification Protocol.\r | |
3 | \r | |
4 | The driver will produce the UEFI PKCS7 Verification Protocol which is used to\r | |
5 | verify data signed using PKCS7 structure. The PKCS7 data to be verified must\r | |
6 | be ASN.1 (DER) encoded.\r | |
7 | \r | |
76b35710 | 8 | Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>\r |
289b714b | 9 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
2d093499 QL |
10 | \r |
11 | **/\r | |
12 | \r | |
13 | #include <Library/BaseLib.h>\r | |
14 | #include <Library/BaseMemoryLib.h>\r | |
15 | #include <Library/MemoryAllocationLib.h>\r | |
16 | #include <Library/UefiBootServicesTableLib.h>\r | |
17 | #include <Library/BaseCryptLib.h>\r | |
18 | #include <Protocol/Pkcs7Verify.h>\r | |
19 | \r | |
20 | #define MAX_DIGEST_SIZE SHA512_DIGEST_SIZE\r | |
21 | \r | |
22 | /**\r | |
23 | Calculates the hash of the given data based on the specified hash GUID.\r | |
24 | \r | |
25 | @param[in] Data Pointer to the data buffer to be hashed.\r | |
26 | @param[in] DataSize The size of data buffer in bytes.\r | |
27 | @param[in] CertGuid The GUID to identify the hash algorithm to be used.\r | |
28 | @param[out] HashValue Pointer to a buffer that receives the hash result.\r | |
29 | \r | |
30 | @retval TRUE Data hash calculation succeeded.\r | |
31 | @retval FALSE Data hash calculation failed.\r | |
32 | \r | |
33 | **/\r | |
34 | BOOLEAN\r | |
35 | CalculateDataHash (\r | |
36 | IN VOID *Data,\r | |
37 | IN UINTN DataSize,\r | |
38 | IN EFI_GUID *CertGuid,\r | |
39 | OUT UINT8 *HashValue\r | |
40 | )\r | |
41 | {\r | |
42 | BOOLEAN Status;\r | |
43 | VOID *HashCtx;\r | |
44 | UINTN CtxSize;\r | |
45 | \r | |
46 | Status = FALSE;\r | |
47 | HashCtx = NULL;\r | |
48 | \r | |
49 | if (CompareGuid (CertGuid, &gEfiCertSha1Guid)) {\r | |
50 | //\r | |
51 | // SHA-1 Hash\r | |
52 | //\r | |
53 | CtxSize = Sha1GetContextSize ();\r | |
54 | HashCtx = AllocatePool (CtxSize);\r | |
55 | if (HashCtx == NULL) {\r | |
56 | goto _Exit;\r | |
57 | }\r | |
58 | Status = Sha1Init (HashCtx);\r | |
59 | Status = Sha1Update (HashCtx, Data, DataSize);\r | |
60 | Status = Sha1Final (HashCtx, HashValue);\r | |
61 | \r | |
62 | } else if (CompareGuid (CertGuid, &gEfiCertSha256Guid)) {\r | |
63 | //\r | |
64 | // SHA256 Hash\r | |
65 | //\r | |
66 | CtxSize = Sha256GetContextSize ();\r | |
67 | HashCtx = AllocatePool (CtxSize);\r | |
68 | if (HashCtx == NULL) {\r | |
69 | goto _Exit;\r | |
70 | }\r | |
71 | Status = Sha256Init (HashCtx);\r | |
72 | Status = Sha256Update (HashCtx, Data, DataSize);\r | |
73 | Status = Sha256Final (HashCtx, HashValue);\r | |
74 | \r | |
75 | } else if (CompareGuid (CertGuid, &gEfiCertSha384Guid)) {\r | |
76 | //\r | |
77 | // SHA384 Hash\r | |
78 | //\r | |
79 | CtxSize = Sha384GetContextSize ();\r | |
80 | HashCtx = AllocatePool (CtxSize);\r | |
81 | if (HashCtx == NULL) {\r | |
82 | goto _Exit;\r | |
83 | }\r | |
84 | Status = Sha384Init (HashCtx);\r | |
85 | Status = Sha384Update (HashCtx, Data, DataSize);\r | |
86 | Status = Sha384Final (HashCtx, HashValue);\r | |
87 | \r | |
88 | } else if (CompareGuid (CertGuid, &gEfiCertSha512Guid)) {\r | |
89 | //\r | |
90 | // SHA512 Hash\r | |
91 | //\r | |
92 | CtxSize = Sha512GetContextSize ();\r | |
93 | HashCtx = AllocatePool (CtxSize);\r | |
94 | if (HashCtx == NULL) {\r | |
95 | goto _Exit;\r | |
96 | }\r | |
97 | Status = Sha512Init (HashCtx);\r | |
98 | Status = Sha512Update (HashCtx, Data, DataSize);\r | |
99 | Status = Sha512Final (HashCtx, HashValue);\r | |
100 | }\r | |
101 | \r | |
102 | _Exit:\r | |
103 | if (HashCtx != NULL) {\r | |
104 | FreePool (HashCtx);\r | |
105 | }\r | |
106 | \r | |
107 | return Status;\r | |
108 | }\r | |
109 | \r | |
a2481f81 LQ |
110 | /**\r |
111 | Check whether the hash of data content is revoked by the revocation database.\r | |
112 | \r | |
113 | @param[in] Hash Pointer to the hash that is searched for.\r | |
114 | @param[in] HashSize The size of the hash in bytes.\r | |
115 | @param[in] RevokedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
116 | structure which contains list of X.509 certificates\r | |
117 | of revoked signers and revoked content hashes.\r | |
118 | \r | |
119 | @return TRUE The matched content hash is found in the revocation database.\r | |
120 | @return FALSE The matched content hash is not found in the revocation database.\r | |
121 | \r | |
122 | **/\r | |
123 | BOOLEAN\r | |
124 | IsContentHashRevokedByHash (\r | |
125 | IN UINT8 *Hash,\r | |
126 | IN UINTN HashSize,\r | |
127 | IN EFI_SIGNATURE_LIST **RevokedDb\r | |
128 | )\r | |
129 | {\r | |
130 | EFI_SIGNATURE_LIST *SigList;\r | |
131 | EFI_SIGNATURE_DATA *SigData;\r | |
132 | UINTN Index;\r | |
133 | UINTN EntryIndex;\r | |
134 | UINTN EntryCount;\r | |
135 | BOOLEAN Status;\r | |
136 | \r | |
137 | if (RevokedDb == NULL) {\r | |
138 | return FALSE;\r | |
139 | }\r | |
140 | \r | |
141 | Status = FALSE;\r | |
142 | //\r | |
143 | // Check if any hash matching content hash can be found in RevokedDB\r | |
144 | //\r | |
145 | for (Index = 0; ; Index++) {\r | |
146 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
147 | \r | |
148 | //\r | |
149 | // The list is terminated by a NULL pointer.\r | |
150 | //\r | |
151 | if (SigList == NULL) {\r | |
152 | break;\r | |
153 | }\r | |
154 | \r | |
155 | //\r | |
156 | // Search the signature database to search the revoked content hash\r | |
157 | //\r | |
158 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
159 | SigList->SignatureHeaderSize);\r | |
160 | EntryCount = (SigList->SignatureListSize - SigList->SignatureHeaderSize -\r | |
161 | sizeof (EFI_SIGNATURE_LIST)) / SigList->SignatureSize;\r | |
162 | for (EntryIndex = 0; EntryIndex < EntryCount; EntryIndex++) {\r | |
163 | //\r | |
164 | // The problem case. There's a revocation hash but the sizes\r | |
165 | // don't match, meaning it's a different hash algorithm and we\r | |
166 | // can't tell if it's revoking our binary or not. Assume not.\r | |
167 | //\r | |
168 | if (SigList->SignatureSize - sizeof(EFI_GUID) == HashSize) {\r | |
169 | //\r | |
170 | // Compare Data Hash with Signature Data\r | |
171 | //\r | |
172 | if (CompareMem (SigData->SignatureData, Hash, HashSize) == 0) {\r | |
173 | Status = TRUE;\r | |
174 | goto _Exit;\r | |
175 | }\r | |
176 | }\r | |
177 | \r | |
178 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigData + SigList->SignatureSize);\r | |
179 | }\r | |
180 | }\r | |
181 | \r | |
182 | _Exit:\r | |
183 | return Status;\r | |
184 | }\r | |
185 | \r | |
2d093499 QL |
186 | /**\r |
187 | Check whether the hash of data content is revoked by the revocation database.\r | |
188 | \r | |
189 | @param[in] Content Pointer to the content buffer that is searched for.\r | |
190 | @param[in] ContentSize The size of data content in bytes.\r | |
191 | @param[in] RevokedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
192 | structure which contains list of X.509 certificates\r | |
193 | of revoked signers and revoked content hashes.\r | |
194 | \r | |
195 | @return TRUE The matched content hash is found in the revocation database.\r | |
196 | @return FALSE The matched content hash is not found in the revocation database.\r | |
197 | \r | |
198 | **/\r | |
199 | BOOLEAN\r | |
200 | IsContentHashRevoked (\r | |
201 | IN UINT8 *Content,\r | |
202 | IN UINTN ContentSize,\r | |
203 | IN EFI_SIGNATURE_LIST **RevokedDb\r | |
204 | )\r | |
205 | {\r | |
206 | EFI_SIGNATURE_LIST *SigList;\r | |
207 | EFI_SIGNATURE_DATA *SigData;\r | |
208 | UINTN Index;\r | |
209 | UINT8 HashVal[MAX_DIGEST_SIZE];\r | |
210 | UINTN EntryIndex;\r | |
211 | UINTN EntryCount;\r | |
212 | BOOLEAN Status;\r | |
213 | \r | |
214 | if (RevokedDb == NULL) {\r | |
215 | return FALSE;\r | |
216 | }\r | |
217 | \r | |
218 | Status = FALSE;\r | |
219 | //\r | |
220 | // Check if any hash matching content hash can be found in RevokedDB\r | |
221 | //\r | |
222 | for (Index = 0; ; Index++) {\r | |
223 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
224 | \r | |
225 | //\r | |
226 | // The list is terminated by a NULL pointer.\r | |
227 | //\r | |
228 | if (SigList == NULL) {\r | |
229 | break;\r | |
230 | }\r | |
231 | \r | |
232 | //\r | |
233 | // Calculate the digest of supplied data based on the signature hash type.\r | |
234 | //\r | |
235 | if (!CalculateDataHash (Content, ContentSize, &SigList->SignatureType, HashVal)) {\r | |
236 | //\r | |
237 | // Un-matched Hash GUID or other failure.\r | |
238 | //\r | |
239 | continue;\r | |
240 | }\r | |
241 | \r | |
242 | //\r | |
243 | // Search the signature database to search the revoked content hash\r | |
244 | //\r | |
245 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
246 | SigList->SignatureHeaderSize);\r | |
247 | EntryCount = (SigList->SignatureListSize - SigList->SignatureHeaderSize -\r | |
248 | sizeof (EFI_SIGNATURE_LIST)) / SigList->SignatureSize;\r | |
249 | for (EntryIndex = 0; EntryIndex < EntryCount; EntryIndex++) {\r | |
250 | //\r | |
251 | // Compare Data Hash with Signature Data\r | |
252 | //\r | |
253 | if (CompareMem (SigData->SignatureData, HashVal, (SigList->SignatureSize - sizeof (EFI_GUID))) == 0) {\r | |
254 | Status = TRUE;\r | |
255 | goto _Exit;\r | |
256 | }\r | |
257 | \r | |
258 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigData + SigList->SignatureSize);\r | |
259 | }\r | |
260 | }\r | |
261 | \r | |
262 | _Exit:\r | |
263 | return Status;\r | |
264 | }\r | |
265 | \r | |
266 | /**\r | |
267 | Check whether the hash of an given certificate is revoked by the revocation database.\r | |
268 | \r | |
269 | @param[in] Certificate Pointer to the certificate that is searched for.\r | |
270 | @param[in] CertSize Size of certificate in bytes.\r | |
271 | @param[in] RevokedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
272 | structures which contains list of X.509 certificate\r | |
273 | of revoked signers and revoked content hashes.\r | |
274 | @param[out] RevocationTime Return the time that the certificate was revoked.\r | |
275 | \r | |
276 | @return TRUE The certificate hash is found in the revocation database.\r | |
277 | @return FALSE The certificate hash is not found in the revocation database.\r | |
278 | \r | |
279 | **/\r | |
280 | BOOLEAN\r | |
281 | IsCertHashRevoked (\r | |
282 | IN UINT8 *Certificate,\r | |
283 | IN UINTN CertSize,\r | |
284 | IN EFI_SIGNATURE_LIST **RevokedDb,\r | |
285 | OUT EFI_TIME *RevocationTime\r | |
286 | )\r | |
287 | {\r | |
288 | BOOLEAN Status;\r | |
289 | EFI_SIGNATURE_LIST *SigList;\r | |
290 | EFI_SIGNATURE_DATA *SigData;\r | |
291 | UINT8 *TBSCert;\r | |
292 | UINTN TBSCertSize;\r | |
293 | UINTN Index;\r | |
294 | UINTN EntryIndex;\r | |
295 | UINTN EntryCount;\r | |
296 | UINT8 CertHashVal[MAX_DIGEST_SIZE];\r | |
297 | \r | |
298 | if ((RevocationTime == NULL) || (RevokedDb == NULL)) {\r | |
299 | return FALSE;\r | |
300 | }\r | |
301 | \r | |
302 | //\r | |
303 | // Retrieve the TBSCertificate from the X.509 Certificate for hash calculation\r | |
304 | //\r | |
305 | if (!X509GetTBSCert (Certificate, CertSize, &TBSCert, &TBSCertSize)) {\r | |
306 | return FALSE;\r | |
307 | }\r | |
308 | \r | |
309 | Status = FALSE;\r | |
310 | for (Index = 0; ; Index++) {\r | |
311 | \r | |
312 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
313 | //\r | |
314 | // The list is terminated by a NULL pointer.\r | |
315 | //\r | |
316 | if (SigList == NULL) {\r | |
317 | break;\r | |
318 | }\r | |
319 | \r | |
320 | //\r | |
321 | // Determine Hash Algorithm based on the entry type in revocation database, and\r | |
322 | // calculate the certificate hash.\r | |
323 | //\r | |
324 | if (CompareGuid (&SigList->SignatureType, &gEfiCertX509Sha256Guid)) {\r | |
325 | Status = CalculateDataHash (TBSCert, TBSCertSize, &gEfiCertSha256Guid, CertHashVal);\r | |
326 | \r | |
327 | } else if (CompareGuid (&SigList->SignatureType, &gEfiCertX509Sha384Guid)) {\r | |
328 | Status = CalculateDataHash (TBSCert, TBSCertSize, &gEfiCertSha384Guid, CertHashVal);\r | |
329 | \r | |
330 | } else if (CompareGuid (&SigList->SignatureType, &gEfiCertX509Sha512Guid)) {\r | |
331 | Status = CalculateDataHash (TBSCert, TBSCertSize, &gEfiCertSha512Guid, CertHashVal);\r | |
332 | \r | |
333 | } else {\r | |
334 | //\r | |
335 | // Un-matched Cert Hash GUID\r | |
336 | //\r | |
337 | continue;\r | |
338 | }\r | |
339 | \r | |
340 | if (!Status) {\r | |
341 | continue;\r | |
342 | }\r | |
343 | \r | |
344 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
345 | SigList->SignatureHeaderSize);\r | |
346 | EntryCount = (SigList->SignatureListSize - SigList->SignatureHeaderSize -\r | |
347 | sizeof (EFI_SIGNATURE_LIST)) / SigList->SignatureSize;\r | |
348 | for (EntryIndex = 0; EntryIndex < EntryCount; Index++) {\r | |
349 | //\r | |
350 | // Check if the Certificate Hash is revoked.\r | |
351 | //\r | |
352 | if (CompareMem (SigData->SignatureData, CertHashVal,\r | |
353 | SigList->SignatureSize - sizeof (EFI_GUID) - sizeof (EFI_TIME)) == 0) {\r | |
354 | Status = TRUE;\r | |
355 | //\r | |
356 | // Return the revocation time of this revoked certificate.\r | |
357 | //\r | |
358 | CopyMem (\r | |
359 | RevocationTime,\r | |
360 | (EFI_TIME *)((UINT8 *)SigData + SigList->SignatureSize - sizeof (EFI_TIME)),\r | |
361 | sizeof (EFI_TIME)\r | |
362 | );\r | |
363 | goto _Exit;\r | |
364 | }\r | |
365 | \r | |
366 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigData + SigList->SignatureSize);\r | |
367 | }\r | |
368 | }\r | |
369 | \r | |
370 | _Exit:\r | |
371 | return Status;\r | |
372 | }\r | |
373 | \r | |
374 | /**\r | |
375 | Check if the given time value is zero.\r | |
376 | \r | |
377 | @param[in] Time Pointer of a time value.\r | |
378 | \r | |
379 | @retval TRUE The Time is Zero.\r | |
380 | @retval FALSE The Time is not Zero.\r | |
381 | \r | |
382 | **/\r | |
383 | BOOLEAN\r | |
384 | IsTimeZero (\r | |
385 | IN EFI_TIME *Time\r | |
386 | )\r | |
387 | {\r | |
388 | if ((Time->Year == 0) && (Time->Month == 0) && (Time->Day == 0) &&\r | |
389 | (Time->Hour == 0) && (Time->Minute == 0) && (Time->Second == 0)) {\r | |
390 | return TRUE;\r | |
391 | }\r | |
392 | \r | |
393 | return FALSE;\r | |
394 | }\r | |
395 | \r | |
396 | /**\r | |
397 | Check whether the timestamp is valid by comparing the signing time and the revocation time.\r | |
398 | \r | |
399 | @param SigningTime Pointer to the signing time.\r | |
400 | @param RevocationTime Pointer to the revocation time.\r | |
401 | \r | |
402 | @retval TRUE The SigningTime is not later than the RevocationTime.\r | |
403 | @retval FALSE The SigningTime is later than the RevocationTime.\r | |
404 | \r | |
405 | **/\r | |
406 | BOOLEAN\r | |
407 | CompareTimestamp (\r | |
408 | IN EFI_TIME *SigningTime,\r | |
409 | IN EFI_TIME *RevocationTime\r | |
410 | )\r | |
411 | {\r | |
412 | if (SigningTime->Year != RevocationTime->Year) {\r | |
413 | return (BOOLEAN) (SigningTime->Year < RevocationTime->Year);\r | |
414 | } else if (SigningTime->Month != RevocationTime->Month) {\r | |
415 | return (BOOLEAN) (SigningTime->Month < RevocationTime->Month);\r | |
416 | } else if (SigningTime->Day != RevocationTime->Day) {\r | |
417 | return (BOOLEAN) (SigningTime->Day < RevocationTime->Day);\r | |
418 | } else if (SigningTime->Hour != RevocationTime->Hour) {\r | |
419 | return (BOOLEAN) (SigningTime->Hour < RevocationTime->Hour);\r | |
420 | } else if (SigningTime->Minute != RevocationTime->Minute) {\r | |
421 | return (BOOLEAN) (SigningTime->Minute < RevocationTime->Minute);\r | |
422 | }\r | |
423 | \r | |
424 | return (BOOLEAN) (SigningTime->Second <= RevocationTime->Second);\r | |
425 | }\r | |
426 | \r | |
427 | /**\r | |
428 | Check whether the timestamp signature embedded in PKCS7 signedData is valid and\r | |
429 | the signing time is also earlier than the revocation time.\r | |
430 | \r | |
431 | @param[in] SignedData Pointer to the PKCS#7 signedData.\r | |
432 | @param[in] SignedDataSize Size of SignedData in bytes.\r | |
433 | @param[in] TimeStampDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
434 | structures which is used to pass a list of X.509\r | |
435 | certificates of trusted timestamp signers.\r | |
436 | @param[in] RevocationTime The time that the certificate was revoked.\r | |
437 | \r | |
438 | @retval TRUE Timestamp signature is valid and the signing time is no later\r | |
439 | than the revocation time.\r | |
440 | @retval FALSE Timestamp signature is not valid or the signing time is later\r | |
441 | than the revocation time.\r | |
442 | \r | |
443 | **/\r | |
444 | BOOLEAN\r | |
445 | IsValidTimestamp (\r | |
446 | IN UINT8 *SignedData,\r | |
447 | IN UINTN SignedDataSize,\r | |
448 | IN EFI_SIGNATURE_LIST **TimeStampDb,\r | |
449 | IN EFI_TIME *RevocationTime\r | |
450 | )\r | |
451 | {\r | |
452 | BOOLEAN Status;\r | |
453 | EFI_SIGNATURE_LIST *SigList;\r | |
454 | EFI_SIGNATURE_DATA *SigData;\r | |
455 | UINT8 *TsaCert;\r | |
456 | UINTN TsaCertSize;\r | |
457 | UINTN Index;\r | |
458 | EFI_TIME SigningTime;\r | |
459 | \r | |
460 | //\r | |
461 | // If no supplied database for verification or RevocationTime is zero,\r | |
462 | // the certificate shall be considered to always be revoked.\r | |
463 | //\r | |
464 | if ((TimeStampDb == NULL) || (IsTimeZero (RevocationTime))) {\r | |
465 | return FALSE;\r | |
466 | }\r | |
467 | \r | |
468 | Status = FALSE;\r | |
469 | //\r | |
470 | // RevocationTime is non-zero, the certificate should be considered to be revoked\r | |
471 | // from that time and onwards.\r | |
472 | //\r | |
473 | for (Index = 0; ; Index++) {\r | |
474 | SigList = (EFI_SIGNATURE_LIST *) (TimeStampDb[Index]);\r | |
475 | \r | |
476 | //\r | |
477 | // The list is terminated by a NULL pointer.\r | |
478 | //\r | |
479 | if (SigList == NULL) {\r | |
480 | break;\r | |
481 | }\r | |
482 | \r | |
483 | //\r | |
484 | // Ignore any non-X509-format entry in the list\r | |
485 | //\r | |
486 | if (!CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r | |
487 | continue;\r | |
488 | }\r | |
489 | \r | |
490 | \r | |
491 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
492 | SigList->SignatureHeaderSize);\r | |
493 | TsaCert = SigData->SignatureData;\r | |
494 | TsaCertSize = SigList->SignatureSize - sizeof (EFI_GUID);\r | |
495 | \r | |
496 | //\r | |
497 | // Each TSA Certificate will normally be in a seperate EFI_SIGNATURE_LIST\r | |
498 | // Leverage ImageTimestampVerify interface for Timestamp counterSignature Verification\r | |
499 | //\r | |
500 | if (ImageTimestampVerify (SignedData, SignedDataSize, TsaCert, TsaCertSize, &SigningTime)) {\r | |
501 | //\r | |
502 | // The signer signature is valid only when the signing time is earlier than revocation time.\r | |
503 | //\r | |
504 | if (CompareTimestamp (&SigningTime, RevocationTime)) {\r | |
505 | Status = TRUE;\r | |
506 | break;\r | |
507 | }\r | |
508 | }\r | |
509 | }\r | |
510 | \r | |
511 | return Status;\r | |
512 | }\r | |
513 | \r | |
a2481f81 LQ |
514 | /**\r |
515 | Check whether the PKCS7 signedData is revoked by verifying with the revoked\r | |
516 | certificates database, and if the signedData is timestamped, the embedded timestamp\r | |
517 | couterSignature will be checked with the supplied timestamp database.\r | |
518 | \r | |
519 | @param[in] SignedData Pointer to buffer containing ASN.1 DER-encoded PKCS7\r | |
520 | signature.\r | |
521 | @param[in] SignedDataSize The size of SignedData buffer in bytes.\r | |
522 | @param[in] InHash Pointer to the buffer containing the hash of the mesage data\r | |
523 | previously signed and to be verified.\r | |
524 | @param[in] InHashSize The size of InHash buffer in bytes.\r | |
525 | @param[in] RevokedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
526 | structure which contains list of X.509 certificates\r | |
527 | of revoked signers and revoked content hashes.\r | |
528 | @param[in] TimeStampDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
529 | structures which is used to pass a list of X.509\r | |
530 | certificates of trusted timestamp signers.\r | |
531 | \r | |
532 | @retval EFI_SUCCESS The PKCS7 signedData is revoked.\r | |
533 | @retval EFI_SECURITY_VIOLATION Fail to verify the signature in PKCS7 signedData.\r | |
534 | @retval EFI_INVALID_PARAMETER SignedData is NULL or SignedDataSize is zero.\r | |
535 | AllowedDb is NULL.\r | |
536 | Content is not NULL and ContentSize is NULL.\r | |
537 | @retval EFI_NOT_FOUND Content not found because InData is NULL and no\r | |
538 | content embedded in PKCS7 signedData.\r | |
539 | @retval EFI_UNSUPPORTED The PKCS7 signedData was not correctly formatted.\r | |
540 | \r | |
541 | **/\r | |
542 | EFI_STATUS\r | |
543 | P7CheckRevocationByHash (\r | |
544 | IN UINT8 *SignedData,\r | |
545 | IN UINTN SignedDataSize,\r | |
546 | IN UINT8 *InHash,\r | |
547 | IN UINTN InHashSize,\r | |
548 | IN EFI_SIGNATURE_LIST **RevokedDb,\r | |
549 | IN EFI_SIGNATURE_LIST **TimeStampDb\r | |
550 | )\r | |
551 | {\r | |
552 | EFI_STATUS Status;\r | |
553 | EFI_SIGNATURE_LIST *SigList;\r | |
554 | EFI_SIGNATURE_DATA *SigData;\r | |
555 | UINT8 *RevokedCert;\r | |
556 | UINTN RevokedCertSize;\r | |
557 | UINTN Index;\r | |
558 | UINT8 *CertBuffer;\r | |
559 | UINTN BufferLength;\r | |
560 | UINT8 *TrustedCert;\r | |
561 | UINTN TrustedCertLength;\r | |
562 | UINT8 CertNumber;\r | |
563 | UINT8 *CertPtr;\r | |
564 | UINT8 *Cert;\r | |
565 | UINTN CertSize;\r | |
566 | EFI_TIME RevocationTime;\r | |
567 | \r | |
568 | Status = EFI_SECURITY_VIOLATION;\r | |
569 | SigData = NULL;\r | |
570 | RevokedCert = NULL;\r | |
571 | RevokedCertSize = 0;\r | |
572 | CertBuffer = NULL;\r | |
573 | TrustedCert = NULL;\r | |
574 | \r | |
575 | //\r | |
576 | // The signedData is revoked if the hash of content existed in RevokedDb\r | |
577 | //\r | |
578 | if (IsContentHashRevokedByHash (InHash, InHashSize, RevokedDb)) {\r | |
579 | Status = EFI_SUCCESS;\r | |
580 | goto _Exit;\r | |
581 | }\r | |
582 | \r | |
583 | //\r | |
584 | // Check if the signer's certificate can be found in Revoked database\r | |
585 | //\r | |
586 | for (Index = 0; ; Index++) {\r | |
587 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
588 | \r | |
589 | //\r | |
590 | // The list is terminated by a NULL pointer.\r | |
591 | //\r | |
592 | if (SigList == NULL) {\r | |
593 | break;\r | |
594 | }\r | |
595 | \r | |
596 | //\r | |
597 | // Ignore any non-X509-format entry in the list.\r | |
598 | //\r | |
599 | if (!CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r | |
600 | continue;\r | |
601 | }\r | |
602 | \r | |
603 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
604 | SigList->SignatureHeaderSize);\r | |
605 | \r | |
606 | RevokedCert = SigData->SignatureData;\r | |
607 | RevokedCertSize = SigList->SignatureSize - sizeof (EFI_GUID);\r | |
608 | \r | |
609 | //\r | |
610 | // Verifying the PKCS#7 SignedData with the revoked certificate in RevokedDb\r | |
611 | //\r | |
612 | if (AuthenticodeVerify (SignedData, SignedDataSize, RevokedCert, RevokedCertSize, InHash, InHashSize)) {\r | |
613 | //\r | |
614 | // The signedData was verified by one entry in Revoked Database\r | |
615 | //\r | |
616 | Status = EFI_SUCCESS;\r | |
617 | break;\r | |
618 | }\r | |
619 | }\r | |
620 | \r | |
621 | if (!EFI_ERROR (Status)) {\r | |
622 | //\r | |
623 | // The signedData was revoked, since it was hit by RevokedDb\r | |
624 | //\r | |
625 | goto _Exit;\r | |
626 | }\r | |
627 | \r | |
628 | //\r | |
629 | // Now we will continue to check the X.509 Certificate Hash & Possible Timestamp\r | |
630 | //\r | |
631 | if ((TimeStampDb == NULL) || (*TimeStampDb == NULL)) {\r | |
632 | goto _Exit;\r | |
633 | }\r | |
634 | \r | |
635 | Pkcs7GetSigners (SignedData, SignedDataSize, &CertBuffer, &BufferLength, &TrustedCert, &TrustedCertLength);\r | |
636 | if ((BufferLength == 0) || (CertBuffer == NULL)) {\r | |
637 | Status = EFI_SUCCESS;\r | |
638 | goto _Exit;\r | |
639 | }\r | |
640 | \r | |
641 | //\r | |
642 | // Check if any hash of certificates embedded in P7 data is in the revoked database.\r | |
643 | //\r | |
644 | CertNumber = (UINT8) (*CertBuffer);\r | |
645 | CertPtr = CertBuffer + 1;\r | |
646 | for (Index = 0; Index < CertNumber; Index++) {\r | |
647 | //\r | |
648 | // Retrieve the Certificate data\r | |
649 | //\r | |
650 | CertSize = (UINTN) ReadUnaligned32 ((UINT32 *) CertPtr);\r | |
651 | Cert = (UINT8 *)CertPtr + sizeof (UINT32);\r | |
652 | \r | |
653 | if (IsCertHashRevoked (Cert, CertSize, RevokedDb, &RevocationTime)) {\r | |
654 | //\r | |
655 | // Check the timestamp signature and signing time to determine if p7 data can be trusted.\r | |
656 | //\r | |
657 | Status = EFI_SUCCESS;\r | |
658 | if (IsValidTimestamp (SignedData, SignedDataSize, TimeStampDb, &RevocationTime)) {\r | |
659 | //\r | |
660 | // Use EFI_NOT_READY to identify the P7Data is not reovked, because the timestamping\r | |
661 | // occured prior to the time of certificate revocation.\r | |
662 | //\r | |
663 | Status = EFI_NOT_READY;\r | |
664 | }\r | |
665 | \r | |
666 | goto _Exit;\r | |
667 | }\r | |
668 | \r | |
669 | CertPtr = CertPtr + sizeof (UINT32) + CertSize;\r | |
670 | }\r | |
671 | \r | |
672 | _Exit:\r | |
673 | Pkcs7FreeSigners (CertBuffer);\r | |
674 | Pkcs7FreeSigners (TrustedCert);\r | |
675 | \r | |
676 | return Status;\r | |
677 | }\r | |
678 | \r | |
2d093499 QL |
679 | /**\r |
680 | Check whether the PKCS7 signedData is revoked by verifying with the revoked\r | |
681 | certificates database, and if the signedData is timestamped, the embedded timestamp\r | |
682 | couterSignature will be checked with the supplied timestamp database.\r | |
683 | \r | |
684 | @param[in] SignedData Pointer to buffer containing ASN.1 DER-encoded PKCS7\r | |
685 | signature.\r | |
686 | @param[in] SignedDataSize The size of SignedData buffer in bytes.\r | |
687 | @param[in] InData Pointer to the buffer containing the raw message data\r | |
688 | previously signed and to be verified.\r | |
689 | @param[in] InDataSize The size of InData buffer in bytes.\r | |
690 | @param[in] RevokedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
691 | structure which contains list of X.509 certificates\r | |
692 | of revoked signers and revoked content hashes.\r | |
693 | @param[in] TimeStampDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
694 | structures which is used to pass a list of X.509\r | |
695 | certificates of trusted timestamp signers.\r | |
696 | \r | |
697 | @retval EFI_SUCCESS The PKCS7 signedData is revoked.\r | |
698 | @retval EFI_SECURITY_VIOLATION Fail to verify the signature in PKCS7 signedData.\r | |
699 | @retval EFI_INVALID_PARAMETER SignedData is NULL or SignedDataSize is zero.\r | |
700 | AllowedDb is NULL.\r | |
701 | Content is not NULL and ContentSize is NULL.\r | |
702 | @retval EFI_NOT_FOUND Content not found because InData is NULL and no\r | |
703 | content embedded in PKCS7 signedData.\r | |
704 | @retval EFI_UNSUPPORTED The PKCS7 signedData was not correctly formatted.\r | |
705 | \r | |
706 | **/\r | |
707 | EFI_STATUS\r | |
708 | P7CheckRevocation (\r | |
709 | IN UINT8 *SignedData,\r | |
710 | IN UINTN SignedDataSize,\r | |
711 | IN UINT8 *InData,\r | |
712 | IN UINTN InDataSize,\r | |
713 | IN EFI_SIGNATURE_LIST **RevokedDb,\r | |
714 | IN EFI_SIGNATURE_LIST **TimeStampDb\r | |
715 | )\r | |
716 | {\r | |
717 | EFI_STATUS Status;\r | |
718 | EFI_SIGNATURE_LIST *SigList;\r | |
719 | EFI_SIGNATURE_DATA *SigData;\r | |
720 | UINT8 *RevokedCert;\r | |
721 | UINTN RevokedCertSize;\r | |
722 | UINTN Index;\r | |
723 | UINT8 *CertBuffer;\r | |
724 | UINTN BufferLength;\r | |
725 | UINT8 *TrustedCert;\r | |
726 | UINTN TrustedCertLength;\r | |
727 | UINT8 CertNumber;\r | |
728 | UINT8 *CertPtr;\r | |
729 | UINT8 *Cert;\r | |
730 | UINTN CertSize;\r | |
731 | EFI_TIME RevocationTime;\r | |
732 | \r | |
733 | Status = EFI_UNSUPPORTED;\r | |
734 | SigData = NULL;\r | |
735 | RevokedCert = NULL;\r | |
736 | RevokedCertSize = 0;\r | |
737 | CertBuffer = NULL;\r | |
738 | TrustedCert = NULL;\r | |
739 | \r | |
740 | //\r | |
741 | // The signedData is revoked if the hash of content existed in RevokedDb\r | |
742 | //\r | |
743 | if (IsContentHashRevoked (InData, InDataSize, RevokedDb)) {\r | |
744 | Status = EFI_SUCCESS;\r | |
745 | goto _Exit;\r | |
746 | }\r | |
747 | \r | |
748 | //\r | |
749 | // Check if the signer's certificate can be found in Revoked database\r | |
750 | //\r | |
751 | for (Index = 0; ; Index++) {\r | |
752 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
753 | \r | |
754 | //\r | |
755 | // The list is terminated by a NULL pointer.\r | |
756 | //\r | |
757 | if (SigList == NULL) {\r | |
758 | break;\r | |
759 | }\r | |
760 | \r | |
761 | //\r | |
762 | // Ignore any non-X509-format entry in the list.\r | |
763 | //\r | |
764 | if (!CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r | |
765 | continue;\r | |
766 | }\r | |
767 | \r | |
768 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
769 | SigList->SignatureHeaderSize);\r | |
770 | \r | |
771 | RevokedCert = SigData->SignatureData;\r | |
772 | RevokedCertSize = SigList->SignatureSize - sizeof (EFI_GUID);\r | |
773 | \r | |
774 | //\r | |
775 | // Verifying the PKCS#7 SignedData with the revoked certificate in RevokedDb\r | |
776 | //\r | |
777 | if (Pkcs7Verify (SignedData, SignedDataSize, RevokedCert, RevokedCertSize, InData, InDataSize)) {\r | |
778 | //\r | |
779 | // The signedData was verified by one entry in Revoked Database\r | |
780 | //\r | |
781 | Status = EFI_SUCCESS;\r | |
782 | break;\r | |
783 | }\r | |
784 | }\r | |
785 | \r | |
786 | if (!EFI_ERROR (Status)) {\r | |
787 | //\r | |
788 | // The signedData was revoked, since it was hit by RevokedDb\r | |
789 | //\r | |
790 | goto _Exit;\r | |
791 | }\r | |
792 | \r | |
793 | //\r | |
794 | // Now we will continue to check the X.509 Certificate Hash & Possible Timestamp\r | |
795 | //\r | |
796 | if ((TimeStampDb == NULL) || (*TimeStampDb == NULL)) {\r | |
797 | goto _Exit;\r | |
798 | }\r | |
799 | \r | |
800 | Pkcs7GetSigners (SignedData, SignedDataSize, &CertBuffer, &BufferLength, &TrustedCert, &TrustedCertLength);\r | |
801 | if ((BufferLength == 0) || (CertBuffer == NULL)) {\r | |
802 | Status = EFI_SUCCESS;\r | |
803 | goto _Exit;\r | |
804 | }\r | |
805 | \r | |
806 | //\r | |
807 | // Check if any hash of certificates embedded in P7 data is in the revoked database.\r | |
808 | //\r | |
809 | CertNumber = (UINT8) (*CertBuffer);\r | |
810 | CertPtr = CertBuffer + 1;\r | |
811 | for (Index = 0; Index < CertNumber; Index++) {\r | |
812 | //\r | |
813 | // Retrieve the Certificate data\r | |
814 | //\r | |
815 | CertSize = (UINTN) ReadUnaligned32 ((UINT32 *) CertPtr);\r | |
816 | Cert = (UINT8 *)CertPtr + sizeof (UINT32);\r | |
817 | \r | |
818 | if (IsCertHashRevoked (Cert, CertSize, RevokedDb, &RevocationTime)) {\r | |
819 | //\r | |
820 | // Check the timestamp signature and signing time to determine if p7 data can be trusted.\r | |
821 | //\r | |
822 | Status = EFI_SUCCESS;\r | |
823 | if (IsValidTimestamp (SignedData, SignedDataSize, TimeStampDb, &RevocationTime)) {\r | |
824 | //\r | |
825 | // Use EFI_NOT_READY to identify the P7Data is not reovked, because the timestamping\r | |
826 | // occured prior to the time of certificate revocation.\r | |
827 | //\r | |
828 | Status = EFI_NOT_READY;\r | |
829 | }\r | |
830 | \r | |
831 | goto _Exit;\r | |
832 | }\r | |
833 | \r | |
834 | CertPtr = CertPtr + sizeof (UINT32) + CertSize;\r | |
835 | }\r | |
836 | \r | |
837 | _Exit:\r | |
838 | Pkcs7FreeSigners (CertBuffer);\r | |
839 | Pkcs7FreeSigners (TrustedCert);\r | |
840 | \r | |
841 | return Status;\r | |
842 | }\r | |
843 | \r | |
a2481f81 LQ |
844 | /**\r |
845 | Check whether the PKCS7 signedData can be verified by the trusted certificates\r | |
846 | database, and return the content of the signedData if requested.\r | |
847 | \r | |
848 | @param[in] SignedData Pointer to buffer containing ASN.1 DER-encoded PKCS7\r | |
849 | signature.\r | |
850 | @param[in] SignedDataSize The size of SignedData buffer in bytes.\r | |
851 | @param[in] InHash Pointer to the buffer containing the hash of the message data\r | |
852 | previously signed and to be verified.\r | |
853 | @param[in] InHashSize The size of InHash buffer in bytes.\r | |
854 | @param[in] AllowedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
855 | structures which contains lists of X.509 certificates\r | |
856 | of approved signers.\r | |
857 | \r | |
858 | @retval EFI_SUCCESS The PKCS7 signedData is trusted.\r | |
859 | @retval EFI_SECURITY_VIOLATION Fail to verify the signature in PKCS7 signedData.\r | |
860 | @retval EFI_INVALID_PARAMETER SignedData is NULL or SignedDataSize is zero.\r | |
861 | AllowedDb is NULL.\r | |
862 | Content is not NULL and ContentSize is NULL.\r | |
863 | @retval EFI_NOT_FOUND Content not found because InData is NULL and no\r | |
864 | content embedded in PKCS7 signedData.\r | |
865 | @retval EFI_UNSUPPORTED The PKCS7 signedData was not correctly formatted.\r | |
866 | @retval EFI_BUFFER_TOO_SMALL The size of buffer indicated by ContentSize is too\r | |
867 | small to hold the content. ContentSize updated to\r | |
868 | the required size.\r | |
869 | \r | |
870 | **/\r | |
871 | EFI_STATUS\r | |
872 | P7CheckTrustByHash (\r | |
873 | IN UINT8 *SignedData,\r | |
874 | IN UINTN SignedDataSize,\r | |
875 | IN UINT8 *InHash,\r | |
876 | IN UINTN InHashSize,\r | |
877 | IN EFI_SIGNATURE_LIST **AllowedDb\r | |
878 | )\r | |
879 | {\r | |
880 | EFI_STATUS Status;\r | |
881 | EFI_SIGNATURE_LIST *SigList;\r | |
882 | EFI_SIGNATURE_DATA *SigData;\r | |
883 | UINT8 *TrustCert;\r | |
884 | UINTN TrustCertSize;\r | |
885 | UINTN Index;\r | |
886 | \r | |
887 | Status = EFI_SECURITY_VIOLATION;\r | |
888 | SigData = NULL;\r | |
889 | TrustCert = NULL;\r | |
890 | TrustCertSize = 0;\r | |
891 | \r | |
892 | if (AllowedDb == NULL) {\r | |
893 | return EFI_INVALID_PARAMETER;\r | |
894 | }\r | |
895 | \r | |
896 | //\r | |
897 | // Build Certificate Stack with all valid X509 certificates in the supplied\r | |
898 | // Signature List for PKCS7 Verification.\r | |
899 | //\r | |
900 | for (Index = 0; ; Index++) {\r | |
901 | SigList = (EFI_SIGNATURE_LIST *)(AllowedDb[Index]);\r | |
902 | \r | |
903 | //\r | |
904 | // The list is terminated by a NULL pointer.\r | |
905 | //\r | |
906 | if (SigList == NULL) {\r | |
907 | break;\r | |
908 | }\r | |
909 | \r | |
910 | //\r | |
911 | // Ignore any non-X509-format entry in the list.\r | |
912 | //\r | |
913 | if (!CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r | |
914 | continue;\r | |
915 | }\r | |
916 | \r | |
917 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
918 | SigList->SignatureHeaderSize);\r | |
919 | \r | |
920 | TrustCert = SigData->SignatureData;\r | |
921 | TrustCertSize = SigList->SignatureSize - sizeof (EFI_GUID);\r | |
922 | \r | |
923 | //\r | |
924 | // Verifying the PKCS#7 SignedData with the trusted certificate from AllowedDb\r | |
925 | //\r | |
926 | if (AuthenticodeVerify (SignedData, SignedDataSize, TrustCert, TrustCertSize, InHash, InHashSize)) {\r | |
927 | //\r | |
928 | // The SignedData was verified successfully by one entry in Trusted Database\r | |
929 | //\r | |
930 | Status = EFI_SUCCESS;\r | |
931 | break;\r | |
932 | }\r | |
933 | }\r | |
934 | \r | |
935 | return Status;\r | |
936 | }\r | |
937 | \r | |
2d093499 QL |
938 | /**\r |
939 | Check whether the PKCS7 signedData can be verified by the trusted certificates\r | |
940 | database, and return the content of the signedData if requested.\r | |
941 | \r | |
942 | @param[in] SignedData Pointer to buffer containing ASN.1 DER-encoded PKCS7\r | |
943 | signature.\r | |
944 | @param[in] SignedDataSize The size of SignedData buffer in bytes.\r | |
945 | @param[in] InData Pointer to the buffer containing the raw message data\r | |
946 | previously signed and to be verified.\r | |
947 | @param[in] InDataSize The size of InData buffer in bytes.\r | |
948 | @param[in] AllowedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
949 | structures which contains lists of X.509 certificates\r | |
950 | of approved signers.\r | |
2d093499 QL |
951 | \r |
952 | @retval EFI_SUCCESS The PKCS7 signedData is trusted.\r | |
953 | @retval EFI_SECURITY_VIOLATION Fail to verify the signature in PKCS7 signedData.\r | |
954 | @retval EFI_INVALID_PARAMETER SignedData is NULL or SignedDataSize is zero.\r | |
955 | AllowedDb is NULL.\r | |
956 | Content is not NULL and ContentSize is NULL.\r | |
957 | @retval EFI_NOT_FOUND Content not found because InData is NULL and no\r | |
958 | content embedded in PKCS7 signedData.\r | |
959 | @retval EFI_UNSUPPORTED The PKCS7 signedData was not correctly formatted.\r | |
960 | @retval EFI_BUFFER_TOO_SMALL The size of buffer indicated by ContentSize is too\r | |
961 | small to hold the content. ContentSize updated to\r | |
962 | the required size.\r | |
963 | \r | |
964 | **/\r | |
965 | EFI_STATUS\r | |
966 | P7CheckTrust (\r | |
967 | IN UINT8 *SignedData,\r | |
968 | IN UINTN SignedDataSize,\r | |
969 | IN UINT8 *InData,\r | |
970 | IN UINTN InDataSize,\r | |
971 | IN EFI_SIGNATURE_LIST **AllowedDb\r | |
972 | )\r | |
973 | {\r | |
974 | EFI_STATUS Status;\r | |
975 | EFI_SIGNATURE_LIST *SigList;\r | |
976 | EFI_SIGNATURE_DATA *SigData;\r | |
977 | UINT8 *TrustCert;\r | |
978 | UINTN TrustCertSize;\r | |
979 | UINTN Index;\r | |
980 | \r | |
981 | Status = EFI_SECURITY_VIOLATION;\r | |
982 | SigData = NULL;\r | |
983 | TrustCert = NULL;\r | |
984 | TrustCertSize = 0;\r | |
985 | \r | |
986 | if (AllowedDb == NULL) {\r | |
987 | return EFI_INVALID_PARAMETER;\r | |
988 | }\r | |
989 | \r | |
990 | //\r | |
991 | // Build Certificate Stack with all valid X509 certificates in the supplied\r | |
992 | // Signature List for PKCS7 Verification.\r | |
993 | //\r | |
994 | for (Index = 0; ; Index++) {\r | |
995 | SigList = (EFI_SIGNATURE_LIST *)(AllowedDb[Index]);\r | |
996 | \r | |
997 | //\r | |
998 | // The list is terminated by a NULL pointer.\r | |
999 | //\r | |
1000 | if (SigList == NULL) {\r | |
1001 | break;\r | |
1002 | }\r | |
1003 | \r | |
1004 | //\r | |
1005 | // Ignore any non-X509-format entry in the list.\r | |
1006 | //\r | |
1007 | if (!CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r | |
1008 | continue;\r | |
1009 | }\r | |
1010 | \r | |
1011 | SigData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) +\r | |
1012 | SigList->SignatureHeaderSize);\r | |
1013 | \r | |
1014 | TrustCert = SigData->SignatureData;\r | |
1015 | TrustCertSize = SigList->SignatureSize - sizeof (EFI_GUID);\r | |
1016 | \r | |
1017 | //\r | |
1018 | // Verifying the PKCS#7 SignedData with the trusted certificate from AllowedDb\r | |
1019 | //\r | |
1020 | if (Pkcs7Verify (SignedData, SignedDataSize, TrustCert, TrustCertSize, InData, InDataSize)) {\r | |
1021 | //\r | |
1022 | // The SignedData was verified successfully by one entry in Trusted Database\r | |
1023 | //\r | |
1024 | Status = EFI_SUCCESS;\r | |
1025 | break;\r | |
1026 | }\r | |
1027 | }\r | |
1028 | \r | |
1029 | return Status;\r | |
1030 | }\r | |
1031 | \r | |
1032 | /**\r | |
1033 | Processes a buffer containing binary DER-encoded PKCS7 signature.\r | |
1034 | The signed data content may be embedded within the buffer or separated. Function\r | |
1035 | verifies the signature of the content is valid and signing certificate was not\r | |
1036 | revoked and is contained within a list of trusted signers.\r | |
1037 | \r | |
1038 | @param[in] This Pointer to EFI_PKCS7_VERIFY_PROTOCOL instance.\r | |
1039 | @param[in] SignedData Points to buffer containing ASN.1 DER-encoded PKCS7\r | |
1040 | signature.\r | |
1041 | @param[in] SignedDataSize The size of SignedData buffer in bytes.\r | |
1042 | @param[in] InData In case of detached signature, InData points to\r | |
1043 | buffer containing the raw message data previously\r | |
1044 | signed and to be verified by function. In case of\r | |
1045 | SignedData containing embedded data, InData must be\r | |
1046 | NULL.\r | |
1047 | @param[in] InDataSize When InData is used, the size of InData buffer in\r | |
1048 | bytes. When InData is NULL. This parameter must be\r | |
1049 | 0.\r | |
1050 | @param[in] AllowedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
1051 | structures. The list is terminated by a null\r | |
1052 | pointer. The EFI_SIGNATURE_LIST structures contain\r | |
1053 | lists of X.509 certificates of approved signers.\r | |
1054 | Function recognizes signer certificates of type\r | |
1055 | EFI_CERT_X509_GUID. Any hash certificate in AllowedDb\r | |
1056 | list is ignored by this function. Function returns\r | |
1057 | success if signer of the buffer is within this list\r | |
1058 | (and not within RevokedDb). This parameter is\r | |
1059 | required.\r | |
1060 | @param[in] RevokedDb Optional pointer to a list of pointers to\r | |
1061 | EFI_SIGNATURE_LIST structures. The list is terminated\r | |
1062 | by a null pointer. List of X.509 certificates of\r | |
1063 | revoked signers and revoked file hashes. Except as\r | |
1064 | noted in description of TimeStampDb signature\r | |
1065 | verification will always fail if the signer of the\r | |
1066 | file or the hash of the data component of the buffer\r | |
1067 | is in RevokedDb list. This list is optional and\r | |
1068 | caller may pass Null or pointer to NULL if not\r | |
1069 | required.\r | |
1070 | @param[in] TimeStampDb Optional pointer to a list of pointers to\r | |
1071 | EFI_SIGNATURE_LIST structures. The list is terminated\r | |
1072 | by a null pointer. This parameter can be used to pass\r | |
1073 | a list of X.509 certificates of trusted time stamp\r | |
1074 | signers. This list is optional and caller must pass\r | |
1075 | Null or pointer to NULL if not required.\r | |
1076 | @param[out] Content On input, points to an optional caller-allocated\r | |
1077 | buffer into which the function will copy the content\r | |
1078 | portion of the file after verification succeeds.\r | |
1079 | This parameter is optional and if NULL, no copy of\r | |
1080 | content from file is performed.\r | |
1081 | @param[in,out] ContentSize On input, points to the size in bytes of the optional\r | |
1082 | buffer Content previously allocated by caller. On\r | |
1083 | output, if the verification succeeds, the value\r | |
1084 | referenced by ContentSize will contain the actual\r | |
1085 | size of the content from signed file. If ContentSize\r | |
1086 | indicates the caller-allocated buffer is too small\r | |
1087 | to contain content, an error is returned, and\r | |
1088 | ContentSize will be updated with the required size.\r | |
1089 | This parameter must be 0 if Content is Null.\r | |
1090 | \r | |
1091 | @retval EFI_SUCCESS Content signature was verified against hash of\r | |
1092 | content, the signer's certificate was not found in\r | |
1093 | RevokedDb, and was found in AllowedDb or if in signer\r | |
1094 | is found in both AllowedDb and RevokedDb, the\r | |
1095 | signing was allowed by reference to TimeStampDb as\r | |
1096 | described above, and no hash matching content hash\r | |
1097 | was found in RevokedDb.\r | |
1098 | @retval EFI_SECURITY_VIOLATION The SignedData buffer was correctly formatted but\r | |
1099 | signer was in RevokedDb or not in AllowedDb. Also\r | |
1100 | returned if matching content hash found in RevokedDb.\r | |
1101 | @retval EFI_COMPROMISED_DATA Calculated hash differs from signed hash.\r | |
1102 | @retval EFI_INVALID_PARAMETER SignedData is NULL or SignedDataSize is zero.\r | |
1103 | AllowedDb is NULL.\r | |
1104 | @retval EFI_INVALID_PARAMETER Content is not NULL and ContentSize is NULL.\r | |
1105 | @retval EFI_ABORTED Unsupported or invalid format in TimeStampDb,\r | |
1106 | RevokedDb or AllowedDb list contents was detected.\r | |
1107 | @retval EFI_NOT_FOUND Content not found because InData is NULL and no\r | |
1108 | content embedded in SignedData.\r | |
1109 | @retval EFI_UNSUPPORTED The SignedData buffer was not correctly formatted\r | |
1110 | for processing by the function.\r | |
1111 | @retval EFI_UNSUPPORTED Signed data embedded in SignedData but InData is not\r | |
1112 | NULL.\r | |
1113 | @retval EFI_BUFFER_TOO_SMALL The size of buffer indicated by ContentSize is too\r | |
1114 | small to hold the content. ContentSize updated to\r | |
1115 | required size.\r | |
1116 | \r | |
1117 | **/\r | |
1118 | EFI_STATUS\r | |
1119 | EFIAPI\r | |
1120 | VerifyBuffer (\r | |
1121 | IN EFI_PKCS7_VERIFY_PROTOCOL *This,\r | |
1122 | IN VOID *SignedData,\r | |
1123 | IN UINTN SignedDataSize,\r | |
1124 | IN VOID *InData OPTIONAL,\r | |
1125 | IN UINTN InDataSize,\r | |
1126 | IN EFI_SIGNATURE_LIST **AllowedDb,\r | |
1127 | IN EFI_SIGNATURE_LIST **RevokedDb OPTIONAL,\r | |
1128 | IN EFI_SIGNATURE_LIST **TimeStampDb OPTIONAL,\r | |
1129 | OUT VOID *Content OPTIONAL,\r | |
1130 | IN OUT UINTN *ContentSize\r | |
1131 | )\r | |
1132 | {\r | |
76b35710 LQ |
1133 | EFI_STATUS Status;\r |
1134 | EFI_SIGNATURE_LIST *SigList;\r | |
1135 | UINTN Index;\r | |
1136 | UINT8 *AttachedData;\r | |
1137 | UINTN AttachedDataSize;\r | |
1138 | UINT8 *DataPtr;\r | |
1139 | UINTN DataSize;\r | |
2d093499 QL |
1140 | \r |
1141 | //\r | |
1142 | // Parameters Checking\r | |
1143 | //\r | |
1144 | if ((SignedData == NULL) || (SignedDataSize == 0) || (AllowedDb == NULL)) {\r | |
1145 | return EFI_INVALID_PARAMETER;\r | |
1146 | }\r | |
1147 | if ((Content != NULL) && (ContentSize == NULL)) {\r | |
1148 | return EFI_INVALID_PARAMETER;\r | |
1149 | }\r | |
1150 | \r | |
76b35710 LQ |
1151 | //\r |
1152 | // Check if any invalid entry format in AllowedDb list contents\r | |
1153 | //\r | |
1154 | for (Index = 0; ; Index++) {\r | |
1155 | SigList = (EFI_SIGNATURE_LIST *)(AllowedDb[Index]);\r | |
1156 | \r | |
1157 | if (SigList == NULL) {\r | |
1158 | break;\r | |
1159 | }\r | |
1160 | if (SigList->SignatureListSize < sizeof (EFI_SIGNATURE_LIST) +\r | |
1161 | SigList->SignatureHeaderSize +\r | |
1162 | SigList->SignatureSize) {\r | |
1163 | return EFI_ABORTED;\r | |
1164 | }\r | |
1165 | }\r | |
1166 | \r | |
1167 | //\r | |
1168 | // Check if any invalid entry format in RevokedDb list contents\r | |
1169 | //\r | |
1170 | if (RevokedDb != NULL) {\r | |
1171 | for (Index = 0; ; Index++) {\r | |
1172 | SigList = (EFI_SIGNATURE_LIST *)(RevokedDb[Index]);\r | |
1173 | \r | |
1174 | if (SigList == NULL) {\r | |
1175 | break;\r | |
1176 | }\r | |
1177 | if (SigList->SignatureListSize < sizeof (EFI_SIGNATURE_LIST) +\r | |
1178 | SigList->SignatureHeaderSize +\r | |
1179 | SigList->SignatureSize) {\r | |
1180 | return EFI_ABORTED;\r | |
1181 | }\r | |
1182 | }\r | |
1183 | }\r | |
1184 | \r | |
1185 | //\r | |
1186 | // Check if any invalid entry format in TimeStampDb list contents\r | |
1187 | //\r | |
1188 | if (TimeStampDb != NULL) {\r | |
1189 | for (Index = 0; ; Index++) {\r | |
1190 | SigList = (EFI_SIGNATURE_LIST *)(TimeStampDb[Index]);\r | |
1191 | \r | |
1192 | if (SigList == NULL) {\r | |
1193 | break;\r | |
1194 | }\r | |
1195 | if (SigList->SignatureListSize < sizeof (EFI_SIGNATURE_LIST) +\r | |
1196 | SigList->SignatureHeaderSize +\r | |
1197 | SigList->SignatureSize) {\r | |
1198 | return EFI_ABORTED;\r | |
1199 | }\r | |
1200 | }\r | |
1201 | }\r | |
1202 | \r | |
2d093499 QL |
1203 | //\r |
1204 | // Try to retrieve the attached content from PKCS7 signedData\r | |
1205 | //\r | |
1206 | AttachedData = NULL;\r | |
1207 | AttachedDataSize = 0;\r | |
1208 | if (!Pkcs7GetAttachedContent (\r | |
1209 | SignedData,\r | |
1210 | SignedDataSize,\r | |
1211 | (VOID **)&AttachedData,\r | |
1212 | &AttachedDataSize)) {\r | |
1213 | //\r | |
1214 | // The SignedData buffer was not correctly formatted for processing\r | |
1215 | //\r | |
1216 | return EFI_UNSUPPORTED;\r | |
1217 | }\r | |
1218 | if (AttachedData != NULL) {\r | |
173a1e68 QL |
1219 | if (InData != NULL) {\r |
1220 | //\r | |
1221 | // The embedded content is found in SignedData but InData is not NULL\r | |
1222 | //\r | |
1223 | Status = EFI_UNSUPPORTED;\r | |
1224 | goto _Exit;\r | |
1225 | }\r | |
2d093499 QL |
1226 | //\r |
1227 | // PKCS7-formatted signedData with attached content; Use the embedded\r | |
1228 | // content for verification\r | |
1229 | //\r | |
1230 | DataPtr = AttachedData;\r | |
1231 | DataSize = AttachedDataSize;\r | |
1232 | \r | |
1233 | } else if (InData != NULL) {\r | |
1234 | //\r | |
1235 | // PKCS7-formatted signedData with detached content; Use the user-supplied\r | |
1236 | // input data for verification\r | |
1237 | //\r | |
1238 | DataPtr = (UINT8 *)InData;\r | |
1239 | DataSize = InDataSize;\r | |
1240 | } else {\r | |
1241 | //\r | |
1242 | // Content not found because InData is NULL and no content attached in SignedData\r | |
1243 | //\r | |
1244 | Status = EFI_NOT_FOUND;\r | |
1245 | goto _Exit;\r | |
1246 | }\r | |
1247 | \r | |
1248 | Status = EFI_UNSUPPORTED;\r | |
1249 | \r | |
1250 | //\r | |
1251 | // Verify PKCS7 SignedData with Revoked database\r | |
1252 | //\r | |
1253 | if (RevokedDb != NULL) {\r | |
1254 | Status = P7CheckRevocation (\r | |
1255 | SignedData,\r | |
1256 | SignedDataSize,\r | |
1257 | DataPtr,\r | |
1258 | DataSize,\r | |
1259 | RevokedDb,\r | |
1260 | TimeStampDb\r | |
1261 | );\r | |
1262 | if (!EFI_ERROR (Status)) {\r | |
1263 | //\r | |
1264 | // The PKCS7 SignedData is reovked\r | |
1265 | //\r | |
1266 | Status = EFI_SECURITY_VIOLATION;\r | |
1267 | goto _Exit;\r | |
1268 | }\r | |
1269 | }\r | |
1270 | \r | |
1271 | //\r | |
1272 | // Verify PKCS7 SignedData with AllowedDB\r | |
1273 | //\r | |
1274 | Status = P7CheckTrust (\r | |
1275 | SignedData,\r | |
1276 | SignedDataSize,\r | |
1277 | DataPtr,\r | |
1278 | DataSize,\r | |
1279 | AllowedDb\r | |
1280 | );\r | |
1281 | if (EFI_ERROR (Status)) {\r | |
1282 | //\r | |
1283 | // Verification failed with AllowedDb\r | |
1284 | //\r | |
1285 | goto _Exit;\r | |
1286 | }\r | |
1287 | \r | |
1288 | //\r | |
1289 | // Copy the content portion after verification succeeds\r | |
1290 | //\r | |
1291 | if (Content != NULL) {\r | |
1292 | if (*ContentSize < DataSize) {\r | |
1293 | //\r | |
1294 | // Caller-allocated buffer is too small to contain content\r | |
1295 | //\r | |
1296 | *ContentSize = DataSize;\r | |
1297 | Status = EFI_BUFFER_TOO_SMALL;\r | |
1298 | } else {\r | |
1299 | *ContentSize = DataSize;\r | |
1300 | CopyMem (Content, DataPtr, DataSize);\r | |
1301 | }\r | |
1302 | }\r | |
1303 | \r | |
1304 | _Exit:\r | |
1305 | if (AttachedData != NULL) {\r | |
1306 | FreePool (AttachedData);\r | |
1307 | }\r | |
1308 | \r | |
1309 | return Status;\r | |
1310 | }\r | |
1311 | \r | |
1312 | /**\r | |
1313 | Processes a buffer containing binary DER-encoded detached PKCS7 signature.\r | |
1314 | The hash of the signed data content is calculated and passed by the caller. Function\r | |
1315 | verifies the signature of the content is valid and signing certificate was not revoked\r | |
1316 | and is contained within a list of trusted signers.\r | |
1317 | \r | |
6ded1955 LQ |
1318 | Note: because this function uses hashes and the specification contains a variety of\r |
1319 | hash choices, you should be aware that the check against the RevokedDb list\r | |
1320 | will improperly succeed if the signature is revoked using a different hash\r | |
1321 | algorithm. For this reason, you should either cycle through all UEFI supported\r | |
1322 | hashes to see if one is forbidden, or rely on a single hash choice only if the\r | |
1323 | UEFI signature authority only signs and revokes with a single hash (at time\r | |
1324 | of writing, this hash choice is SHA256).\r | |
1325 | \r | |
2d093499 QL |
1326 | @param[in] This Pointer to EFI_PKCS7_VERIFY_PROTOCOL instance.\r |
1327 | @param[in] Signature Points to buffer containing ASN.1 DER-encoded PKCS\r | |
1328 | detached signature.\r | |
1329 | @param[in] SignatureSize The size of Signature buffer in bytes.\r | |
1330 | @param[in] InHash InHash points to buffer containing the caller\r | |
1331 | calculated hash of the data. The parameter may not\r | |
1332 | be NULL.\r | |
1333 | @param[in] InHashSize The size in bytes of InHash buffer.\r | |
1334 | @param[in] AllowedDb Pointer to a list of pointers to EFI_SIGNATURE_LIST\r | |
1335 | structures. The list is terminated by a null\r | |
1336 | pointer. The EFI_SIGNATURE_LIST structures contain\r | |
1337 | lists of X.509 certificates of approved signers.\r | |
1338 | Function recognizes signer certificates of type\r | |
1339 | EFI_CERT_X509_GUID. Any hash certificate in AllowedDb\r | |
1340 | list is ignored by this function. Function returns\r | |
1341 | success if signer of the buffer is within this list\r | |
1342 | (and not within RevokedDb). This parameter is\r | |
1343 | required.\r | |
1344 | @param[in] RevokedDb Optional pointer to a list of pointers to\r | |
1345 | EFI_SIGNATURE_LIST structures. The list is terminated\r | |
1346 | by a null pointer. List of X.509 certificates of\r | |
1347 | revoked signers and revoked file hashes. Signature\r | |
1348 | verification will always fail if the signer of the\r | |
1349 | file or the hash of the data component of the buffer\r | |
1350 | is in RevokedDb list. This parameter is optional\r | |
1351 | and caller may pass Null if not required.\r | |
1352 | @param[in] TimeStampDb Optional pointer to a list of pointers to\r | |
1353 | EFI_SIGNATURE_LIST structures. The list is terminated\r | |
1354 | by a null pointer. This parameter can be used to pass\r | |
1355 | a list of X.509 certificates of trusted time stamp\r | |
1356 | counter-signers.\r | |
1357 | \r | |
1358 | @retval EFI_SUCCESS Signed hash was verified against caller-provided\r | |
1359 | hash of content, the signer's certificate was not\r | |
1360 | found in RevokedDb, and was found in AllowedDb or\r | |
1361 | if in signer is found in both AllowedDb and\r | |
1362 | RevokedDb, the signing was allowed by reference to\r | |
1363 | TimeStampDb as described above, and no hash matching\r | |
1364 | content hash was found in RevokedDb.\r | |
1365 | @retval EFI_SECURITY_VIOLATION The SignedData buffer was correctly formatted but\r | |
1366 | signer was in RevokedDb or not in AllowedDb. Also\r | |
1367 | returned if matching content hash found in RevokedDb.\r | |
1368 | @retval EFI_COMPROMISED_DATA Caller provided hash differs from signed hash. Or,\r | |
1369 | caller and encrypted hash are different sizes.\r | |
1370 | @retval EFI_INVALID_PARAMETER Signature is NULL or SignatureSize is zero. InHash\r | |
1371 | is NULL or InHashSize is zero. AllowedDb is NULL.\r | |
1372 | @retval EFI_ABORTED Unsupported or invalid format in TimeStampDb,\r | |
1373 | RevokedDb or AllowedDb list contents was detected.\r | |
1374 | @retval EFI_UNSUPPORTED The Signature buffer was not correctly formatted\r | |
1375 | for processing by the function.\r | |
1376 | \r | |
1377 | **/\r | |
1378 | EFI_STATUS\r | |
1379 | EFIAPI\r | |
1380 | VerifySignature (\r | |
1381 | IN EFI_PKCS7_VERIFY_PROTOCOL *This,\r | |
1382 | IN VOID *Signature,\r | |
1383 | IN UINTN SignatureSize,\r | |
1384 | IN VOID *InHash,\r | |
1385 | IN UINTN InHashSize,\r | |
1386 | IN EFI_SIGNATURE_LIST **AllowedDb,\r | |
1387 | IN EFI_SIGNATURE_LIST **RevokedDb OPTIONAL,\r | |
1388 | IN EFI_SIGNATURE_LIST **TimeStampDb OPTIONAL\r | |
1389 | )\r | |
1390 | {\r | |
a2481f81 LQ |
1391 | EFI_STATUS Status;\r |
1392 | \r | |
1393 | //\r | |
1394 | // Parameters Checking\r | |
2d093499 | 1395 | //\r |
a2481f81 LQ |
1396 | if ((Signature == NULL) || (SignatureSize == 0) || (AllowedDb == NULL)\r |
1397 | || (InHash == NULL) || (InHashSize == 0)) {\r | |
1398 | return EFI_INVALID_PARAMETER;\r | |
1399 | }\r | |
1400 | \r | |
2d093499 | 1401 | //\r |
a2481f81 LQ |
1402 | // Verify PKCS7 SignedData with Revoked database\r |
1403 | //\r | |
1404 | if (RevokedDb != NULL) {\r | |
1405 | Status = P7CheckRevocationByHash (\r | |
1406 | Signature,\r | |
1407 | SignatureSize,\r | |
1408 | InHash,\r | |
1409 | InHashSize,\r | |
1410 | RevokedDb,\r | |
1411 | TimeStampDb\r | |
1412 | );\r | |
1413 | \r | |
1414 | if (!EFI_ERROR (Status)) {\r | |
1415 | //\r | |
1416 | // The PKCS7 SignedData is reovked\r | |
1417 | //\r | |
1418 | return EFI_SECURITY_VIOLATION;\r | |
1419 | }\r | |
1420 | }\r | |
1421 | \r | |
1422 | //\r | |
1423 | // Verify PKCS7 SignedData with AllowedDB\r | |
1424 | //\r | |
1425 | Status = P7CheckTrustByHash (\r | |
1426 | Signature,\r | |
1427 | SignatureSize,\r | |
1428 | InHash,\r | |
1429 | InHashSize,\r | |
1430 | AllowedDb\r | |
1431 | );\r | |
1432 | \r | |
1433 | return Status;\r | |
2d093499 QL |
1434 | }\r |
1435 | \r | |
1436 | //\r | |
1437 | // The PKCS7 Verification Protocol\r | |
1438 | //\r | |
1439 | EFI_PKCS7_VERIFY_PROTOCOL mPkcs7Verify = {\r | |
1440 | VerifyBuffer,\r | |
1441 | VerifySignature\r | |
1442 | };\r | |
1443 | \r | |
1444 | /**\r | |
1445 | The user Entry Point for the PKCS7 Verification driver.\r | |
1446 | \r | |
1447 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
1448 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
1449 | \r | |
1450 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1451 | @retval EFI_NOT_SUPPORTED Platform does not support PKCS7 Verification.\r | |
1452 | @retval Other Some error occurs when executing this entry point.\r | |
1453 | \r | |
1454 | **/\r | |
1455 | EFI_STATUS\r | |
1456 | EFIAPI\r | |
1457 | Pkcs7VerifyDriverEntry (\r | |
1458 | IN EFI_HANDLE ImageHandle,\r | |
1459 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1460 | )\r | |
1461 | {\r | |
56e88e9e PJ |
1462 | EFI_STATUS Status;\r |
1463 | EFI_HANDLE Handle;\r | |
1464 | EFI_PKCS7_VERIFY_PROTOCOL Useless;\r | |
1465 | \r | |
1466 | //\r | |
1467 | // Avoid loading a second copy if this is built as an external module\r | |
1468 | //\r | |
1469 | Status = gBS->LocateProtocol (&gEfiPkcs7VerifyProtocolGuid, NULL, (VOID **)&Useless);\r | |
1470 | if (!EFI_ERROR (Status)) {\r | |
1471 | return EFI_ABORTED;\r | |
1472 | }\r | |
2d093499 QL |
1473 | \r |
1474 | //\r | |
1475 | // Install UEFI Pkcs7 Verification Protocol\r | |
1476 | //\r | |
1477 | Handle = NULL;\r | |
1478 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1479 | &Handle,\r | |
1480 | &gEfiPkcs7VerifyProtocolGuid,\r | |
1481 | &mPkcs7Verify,\r | |
1482 | NULL\r | |
1483 | );\r | |
1484 | \r | |
1485 | return Status;\r | |
1486 | }\r |