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4a567c96 | 1 | /** @file\r |
2 | X.509 Certificate Handler Wrapper Implementation over OpenSSL.\r | |
3 | \r | |
1463ce18 | 4 | Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r |
4a567c96 | 5 | This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "InternalCryptLib.h"\r | |
16 | #include <openssl/x509.h>\r | |
1cae0c83 | 17 | #include <openssl/rsa.h>\r |
b7d320f8 | 18 | \r |
19 | /**\r | |
20 | Construct a X509 object from DER-encoded certificate data.\r | |
21 | \r | |
16d2c32c | 22 | If Cert is NULL, then return FALSE.\r |
23 | If SingleX509Cert is NULL, then return FALSE.\r | |
b7d320f8 | 24 | \r |
25 | @param[in] Cert Pointer to the DER-encoded certificate data.\r | |
26 | @param[in] CertSize The size of certificate data in bytes.\r | |
27 | @param[out] SingleX509Cert The generated X509 object.\r | |
28 | \r | |
29 | @retval TRUE The X509 object generation succeeded.\r | |
30 | @retval FALSE The operation failed.\r | |
31 | \r | |
32 | **/\r | |
33 | BOOLEAN\r | |
34 | EFIAPI\r | |
35 | X509ConstructCertificate (\r | |
36 | IN CONST UINT8 *Cert,\r | |
37 | IN UINTN CertSize,\r | |
38 | OUT UINT8 **SingleX509Cert\r | |
39 | )\r | |
40 | {\r | |
1463ce18 QL |
41 | X509 *X509Cert;\r |
42 | CONST UINT8 *Temp;\r | |
b7d320f8 | 43 | \r |
44 | //\r | |
16d2c32c | 45 | // Check input parameters.\r |
b7d320f8 | 46 | //\r |
16d2c32c | 47 | if (Cert == NULL || SingleX509Cert == NULL || CertSize > INT_MAX) {\r |
48 | return FALSE;\r | |
49 | }\r | |
da9e7418 | 50 | \r |
b7d320f8 | 51 | //\r |
52 | // Read DER-encoded X509 Certificate and Construct X509 object.\r | |
53 | //\r | |
1463ce18 QL |
54 | Temp = Cert;\r |
55 | X509Cert = d2i_X509 (NULL, &Temp, (long) CertSize);\r | |
b7d320f8 | 56 | if (X509Cert == NULL) {\r |
02ee8d3b | 57 | return FALSE;\r |
b7d320f8 | 58 | }\r |
59 | \r | |
60 | *SingleX509Cert = (UINT8 *) X509Cert;\r | |
b7d320f8 | 61 | \r |
02ee8d3b | 62 | return TRUE;\r |
b7d320f8 | 63 | }\r |
64 | \r | |
65 | /**\r | |
66 | Construct a X509 stack object from a list of DER-encoded certificate data.\r | |
67 | \r | |
16d2c32c | 68 | If X509Stack is NULL, then return FALSE.\r |
b7d320f8 | 69 | \r |
952bd229 | 70 | @param[in, out] X509Stack On input, pointer to an existing or NULL X509 stack object.\r |
b7d320f8 | 71 | On output, pointer to the X509 stack object with new\r |
72 | inserted X509 certificate.\r | |
73 | @param ... A list of DER-encoded single certificate data followed\r | |
74 | by certificate size. A NULL terminates the list. The\r | |
75 | pairs are the arguments to X509ConstructCertificate().\r | |
76 | \r | |
77 | @retval TRUE The X509 stack construction succeeded.\r | |
78 | @retval FALSE The construction operation failed.\r | |
79 | \r | |
80 | **/\r | |
81 | BOOLEAN\r | |
82 | EFIAPI\r | |
83 | X509ConstructCertificateStack (\r | |
84 | IN OUT UINT8 **X509Stack,\r | |
85 | ... \r | |
86 | )\r | |
87 | {\r | |
88 | UINT8 *Cert;\r | |
89 | UINTN CertSize;\r | |
90 | X509 *X509Cert;\r | |
91 | STACK_OF(X509) *CertStack;\r | |
92 | BOOLEAN Status;\r | |
93 | VA_LIST Args;\r | |
94 | UINTN Index;\r | |
95 | \r | |
96 | //\r | |
16d2c32c | 97 | // Check input parameters.\r |
b7d320f8 | 98 | //\r |
16d2c32c | 99 | if (X509Stack == NULL) {\r |
100 | return FALSE;\r | |
101 | }\r | |
b7d320f8 | 102 | \r |
103 | Status = FALSE;\r | |
104 | \r | |
105 | //\r | |
106 | // Initialize X509 stack object.\r | |
107 | //\r | |
108 | CertStack = (STACK_OF(X509) *) (*X509Stack);\r | |
109 | if (CertStack == NULL) {\r | |
110 | CertStack = sk_X509_new_null ();\r | |
111 | if (CertStack == NULL) {\r | |
112 | return Status;\r | |
113 | }\r | |
114 | }\r | |
115 | \r | |
116 | VA_START (Args, X509Stack);\r | |
117 | \r | |
118 | for (Index = 0; ; Index++) {\r | |
119 | //\r | |
120 | // If Cert is NULL, then it is the end of the list.\r | |
121 | //\r | |
122 | Cert = VA_ARG (Args, UINT8 *);\r | |
123 | if (Cert == NULL) {\r | |
124 | break;\r | |
125 | }\r | |
126 | \r | |
127 | CertSize = VA_ARG (Args, UINTN);\r | |
1463ce18 QL |
128 | if (CertSize == 0) {\r |
129 | break;\r | |
130 | }\r | |
b7d320f8 | 131 | \r |
132 | //\r | |
133 | // Construct X509 Object from the given DER-encoded certificate data.\r | |
134 | //\r | |
952bd229 | 135 | X509Cert = NULL;\r |
b7d320f8 | 136 | Status = X509ConstructCertificate (\r |
137 | (CONST UINT8 *) Cert,\r | |
138 | CertSize,\r | |
139 | (UINT8 **) &X509Cert\r | |
140 | );\r | |
141 | if (!Status) {\r | |
1463ce18 QL |
142 | if (X509Cert != NULL) {\r |
143 | X509_free (X509Cert);\r | |
144 | }\r | |
b7d320f8 | 145 | break;\r |
146 | }\r | |
147 | \r | |
148 | //\r | |
149 | // Insert the new X509 object into X509 stack object.\r | |
150 | //\r | |
151 | sk_X509_push (CertStack, X509Cert);\r | |
152 | }\r | |
153 | \r | |
154 | VA_END (Args);\r | |
155 | \r | |
156 | if (!Status) {\r | |
157 | sk_X509_pop_free (CertStack, X509_free);\r | |
158 | } else {\r | |
159 | *X509Stack = (UINT8 *) CertStack;\r | |
160 | }\r | |
161 | \r | |
162 | return Status;\r | |
163 | }\r | |
164 | \r | |
165 | /**\r | |
166 | Release the specified X509 object.\r | |
167 | \r | |
16d2c32c | 168 | If X509Cert is NULL, then return FALSE.\r |
b7d320f8 | 169 | \r |
170 | @param[in] X509Cert Pointer to the X509 object to be released.\r | |
171 | \r | |
172 | **/\r | |
173 | VOID\r | |
174 | EFIAPI\r | |
175 | X509Free (\r | |
176 | IN VOID *X509Cert\r | |
177 | )\r | |
16d2c32c | 178 | { \r |
179 | //\r | |
180 | // Check input parameters.\r | |
181 | //\r | |
182 | if (X509Cert == NULL) {\r | |
183 | return;\r | |
184 | }\r | |
185 | \r | |
b7d320f8 | 186 | //\r |
187 | // Free OpenSSL X509 object.\r | |
188 | //\r | |
189 | X509_free ((X509 *) X509Cert);\r | |
190 | }\r | |
191 | \r | |
192 | /**\r | |
193 | Release the specified X509 stack object.\r | |
194 | \r | |
16d2c32c | 195 | If X509Stack is NULL, then return FALSE.\r |
b7d320f8 | 196 | \r |
197 | @param[in] X509Stack Pointer to the X509 stack object to be released.\r | |
198 | \r | |
199 | **/\r | |
200 | VOID\r | |
201 | EFIAPI\r | |
202 | X509StackFree (\r | |
203 | IN VOID *X509Stack\r | |
204 | )\r | |
205 | {\r | |
16d2c32c | 206 | //\r |
207 | // Check input parameters.\r | |
208 | //\r | |
209 | if (X509Stack == NULL) {\r | |
210 | return;\r | |
211 | }\r | |
212 | \r | |
b7d320f8 | 213 | //\r |
214 | // Free OpenSSL X509 stack object.\r | |
215 | //\r | |
216 | sk_X509_pop_free ((STACK_OF(X509) *) X509Stack, X509_free);\r | |
217 | }\r | |
218 | \r | |
4a567c96 | 219 | /**\r |
220 | Retrieve the subject bytes from one X.509 certificate.\r | |
221 | \r | |
222 | @param[in] Cert Pointer to the DER-encoded X509 certificate.\r | |
223 | @param[in] CertSize Size of the X509 certificate in bytes.\r | |
224 | @param[out] CertSubject Pointer to the retrieved certificate subject bytes.\r | |
225 | @param[in, out] SubjectSize The size in bytes of the CertSubject buffer on input,\r | |
226 | and the size of buffer returned CertSubject on output.\r | |
227 | \r | |
16d2c32c | 228 | If Cert is NULL, then return FALSE.\r |
229 | If SubjectSize is NULL, then return FALSE.\r | |
4a567c96 | 230 | \r |
231 | @retval TRUE The certificate subject retrieved successfully.\r | |
232 | @retval FALSE Invalid certificate, or the SubjectSize is too small for the result.\r | |
233 | The SubjectSize will be updated with the required size.\r | |
234 | \r | |
235 | **/\r | |
236 | BOOLEAN\r | |
237 | EFIAPI\r | |
238 | X509GetSubjectName (\r | |
239 | IN CONST UINT8 *Cert,\r | |
240 | IN UINTN CertSize,\r | |
241 | OUT UINT8 *CertSubject,\r | |
242 | IN OUT UINTN *SubjectSize\r | |
243 | )\r | |
244 | {\r | |
245 | BOOLEAN Status;\r | |
4a567c96 | 246 | X509 *X509Cert;\r |
247 | X509_NAME *X509Name;\r | |
eeb8928a | 248 | UINTN X509NameSize;\r |
4a567c96 | 249 | \r |
250 | //\r | |
16d2c32c | 251 | // Check input parameters.\r |
4a567c96 | 252 | //\r |
16d2c32c | 253 | if (Cert == NULL || SubjectSize == NULL) {\r |
254 | return FALSE;\r | |
255 | }\r | |
4a567c96 | 256 | \r |
4a567c96 | 257 | X509Cert = NULL;\r |
258 | \r | |
259 | //\r | |
260 | // Read DER-encoded X509 Certificate and Construct X509 object.\r | |
261 | //\r | |
b7d320f8 | 262 | Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r |
263 | if ((X509Cert == NULL) || (!Status)) {\r | |
dda39f3a | 264 | Status = FALSE;\r |
4a567c96 | 265 | goto _Exit;\r |
266 | }\r | |
267 | \r | |
dda39f3a | 268 | Status = FALSE;\r |
269 | \r | |
4a567c96 | 270 | //\r |
271 | // Retrieve subject name from certificate object.\r | |
272 | //\r | |
273 | X509Name = X509_get_subject_name (X509Cert);\r | |
dda39f3a | 274 | if (X509Name == NULL) {\r |
275 | goto _Exit;\r | |
276 | }\r | |
277 | \r | |
eeb8928a DW |
278 | X509NameSize = i2d_X509_NAME(X509Name, NULL);\r |
279 | if (*SubjectSize < X509NameSize) {\r | |
280 | *SubjectSize = X509NameSize;\r | |
4a567c96 | 281 | goto _Exit;\r |
282 | }\r | |
eeb8928a | 283 | *SubjectSize = X509NameSize;\r |
4a567c96 | 284 | if (CertSubject != NULL) {\r |
eeb8928a | 285 | i2d_X509_NAME(X509Name, &CertSubject);\r |
4a567c96 | 286 | Status = TRUE;\r |
287 | }\r | |
288 | \r | |
289 | _Exit:\r | |
290 | //\r | |
291 | // Release Resources.\r | |
292 | //\r | |
dda39f3a | 293 | if (X509Cert != NULL) {\r |
294 | X509_free (X509Cert);\r | |
295 | }\r | |
4a567c96 | 296 | \r |
297 | return Status;\r | |
298 | }\r | |
299 | \r | |
300 | /**\r | |
301 | Retrieve the RSA Public Key from one DER-encoded X509 certificate.\r | |
302 | \r | |
303 | @param[in] Cert Pointer to the DER-encoded X509 certificate.\r | |
304 | @param[in] CertSize Size of the X509 certificate in bytes.\r | |
305 | @param[out] RsaContext Pointer to new-generated RSA context which contain the retrieved\r | |
306 | RSA public key component. Use RsaFree() function to free the\r | |
307 | resource.\r | |
308 | \r | |
16d2c32c | 309 | If Cert is NULL, then return FALSE.\r |
310 | If RsaContext is NULL, then return FALSE.\r | |
4a567c96 | 311 | \r |
312 | @retval TRUE RSA Public Key was retrieved successfully.\r | |
313 | @retval FALSE Fail to retrieve RSA public key from X509 certificate.\r | |
314 | \r | |
315 | **/\r | |
316 | BOOLEAN\r | |
317 | EFIAPI\r | |
318 | RsaGetPublicKeyFromX509 (\r | |
319 | IN CONST UINT8 *Cert,\r | |
320 | IN UINTN CertSize,\r | |
321 | OUT VOID **RsaContext\r | |
322 | )\r | |
323 | {\r | |
324 | BOOLEAN Status;\r | |
325 | EVP_PKEY *Pkey;\r | |
4a567c96 | 326 | X509 *X509Cert;\r |
16d2c32c | 327 | \r |
4a567c96 | 328 | //\r |
16d2c32c | 329 | // Check input parameters.\r |
4a567c96 | 330 | //\r |
16d2c32c | 331 | if (Cert == NULL || RsaContext == NULL) {\r |
332 | return FALSE;\r | |
333 | }\r | |
4a567c96 | 334 | \r |
4a567c96 | 335 | Pkey = NULL;\r |
4a567c96 | 336 | X509Cert = NULL;\r |
337 | \r | |
338 | //\r | |
339 | // Read DER-encoded X509 Certificate and Construct X509 object.\r | |
340 | //\r | |
b7d320f8 | 341 | Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r |
342 | if ((X509Cert == NULL) || (!Status)) {\r | |
dda39f3a | 343 | Status = FALSE;\r |
4a567c96 | 344 | goto _Exit;\r |
345 | }\r | |
346 | \r | |
dda39f3a | 347 | Status = FALSE;\r |
348 | \r | |
4a567c96 | 349 | //\r |
350 | // Retrieve and check EVP_PKEY data from X509 Certificate.\r | |
351 | //\r | |
352 | Pkey = X509_get_pubkey (X509Cert);\r | |
353 | if ((Pkey == NULL) || (Pkey->type != EVP_PKEY_RSA)) {\r | |
354 | goto _Exit;\r | |
355 | }\r | |
356 | \r | |
357 | //\r | |
358 | // Duplicate RSA Context from the retrieved EVP_PKEY.\r | |
359 | //\r | |
360 | if ((*RsaContext = RSAPublicKey_dup (Pkey->pkey.rsa)) != NULL) {\r | |
361 | Status = TRUE;\r | |
362 | }\r | |
363 | \r | |
364 | _Exit:\r | |
365 | //\r | |
366 | // Release Resources.\r | |
367 | //\r | |
dda39f3a | 368 | if (X509Cert != NULL) {\r |
369 | X509_free (X509Cert);\r | |
370 | }\r | |
371 | \r | |
372 | if (Pkey != NULL) {\r | |
373 | EVP_PKEY_free (Pkey);\r | |
374 | } \r | |
4a567c96 | 375 | \r |
376 | return Status;\r | |
377 | }\r | |
378 | \r | |
379 | /**\r | |
380 | Verify one X509 certificate was issued by the trusted CA.\r | |
381 | \r | |
382 | @param[in] Cert Pointer to the DER-encoded X509 certificate to be verified.\r | |
383 | @param[in] CertSize Size of the X509 certificate in bytes.\r | |
384 | @param[in] CACert Pointer to the DER-encoded trusted CA certificate.\r | |
385 | @param[in] CACertSize Size of the CA Certificate in bytes.\r | |
386 | \r | |
16d2c32c | 387 | If Cert is NULL, then return FALSE.\r |
388 | If CACert is NULL, then return FALSE.\r | |
4a567c96 | 389 | \r |
390 | @retval TRUE The certificate was issued by the trusted CA.\r | |
391 | @retval FALSE Invalid certificate or the certificate was not issued by the given\r | |
392 | trusted CA.\r | |
393 | \r | |
394 | **/\r | |
395 | BOOLEAN\r | |
396 | EFIAPI\r | |
397 | X509VerifyCert (\r | |
398 | IN CONST UINT8 *Cert,\r | |
399 | IN UINTN CertSize,\r | |
400 | IN CONST UINT8 *CACert,\r | |
401 | IN UINTN CACertSize\r | |
402 | )\r | |
403 | {\r | |
404 | BOOLEAN Status;\r | |
4a567c96 | 405 | X509 *X509Cert;\r |
406 | X509 *X509CACert;\r | |
407 | X509_STORE *CertStore;\r | |
408 | X509_STORE_CTX CertCtx;\r | |
16d2c32c | 409 | \r |
4a567c96 | 410 | //\r |
16d2c32c | 411 | // Check input parameters.\r |
4a567c96 | 412 | //\r |
16d2c32c | 413 | if (Cert == NULL || CACert == NULL) {\r |
414 | return FALSE;\r | |
415 | }\r | |
4a567c96 | 416 | \r |
417 | Status = FALSE;\r | |
4a567c96 | 418 | X509Cert = NULL;\r |
419 | X509CACert = NULL;\r | |
420 | CertStore = NULL;\r | |
421 | \r | |
422 | //\r | |
423 | // Register & Initialize necessary digest algorithms for certificate verification.\r | |
424 | //\r | |
dda39f3a | 425 | if (EVP_add_digest (EVP_md5 ()) == 0) {\r |
426 | goto _Exit;\r | |
427 | }\r | |
428 | if (EVP_add_digest (EVP_sha1 ()) == 0) {\r | |
429 | goto _Exit;\r | |
430 | }\r | |
431 | if (EVP_add_digest (EVP_sha256 ()) == 0) {\r | |
432 | goto _Exit;\r | |
433 | }\r | |
4a567c96 | 434 | \r |
435 | //\r | |
436 | // Read DER-encoded certificate to be verified and Construct X509 object.\r | |
437 | //\r | |
b7d320f8 | 438 | Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r |
439 | if ((X509Cert == NULL) || (!Status)) {\r | |
dda39f3a | 440 | Status = FALSE;\r |
4a567c96 | 441 | goto _Exit;\r |
442 | }\r | |
443 | \r | |
444 | //\r | |
445 | // Read DER-encoded root certificate and Construct X509 object.\r | |
446 | //\r | |
b7d320f8 | 447 | Status = X509ConstructCertificate (CACert, CACertSize, (UINT8 **) &X509CACert);\r |
448 | if ((X509CACert == NULL) || (!Status)) {\r | |
dda39f3a | 449 | Status = FALSE;\r |
4a567c96 | 450 | goto _Exit;\r |
451 | }\r | |
452 | \r | |
dda39f3a | 453 | Status = FALSE;\r |
454 | \r | |
4a567c96 | 455 | //\r |
456 | // Set up X509 Store for trusted certificate.\r | |
457 | //\r | |
458 | CertStore = X509_STORE_new ();\r | |
459 | if (CertStore == NULL) {\r | |
460 | goto _Exit;\r | |
461 | }\r | |
462 | if (!(X509_STORE_add_cert (CertStore, X509CACert))) {\r | |
463 | goto _Exit;\r | |
464 | }\r | |
465 | \r | |
466 | //\r | |
467 | // Set up X509_STORE_CTX for the subsequent verification operation.\r | |
468 | //\r | |
469 | if (!X509_STORE_CTX_init (&CertCtx, CertStore, X509Cert, NULL)) {\r | |
470 | goto _Exit;\r | |
471 | }\r | |
472 | \r | |
473 | //\r | |
474 | // X509 Certificate Verification.\r | |
475 | //\r | |
476 | Status = (BOOLEAN) X509_verify_cert (&CertCtx);\r | |
da9e7418 | 477 | X509_STORE_CTX_cleanup (&CertCtx);\r |
4a567c96 | 478 | \r |
479 | _Exit:\r | |
480 | //\r | |
481 | // Release Resources.\r | |
482 | //\r | |
dda39f3a | 483 | if (X509Cert != NULL) {\r |
484 | X509_free (X509Cert);\r | |
485 | }\r | |
486 | \r | |
487 | if (X509CACert != NULL) {\r | |
488 | X509_free (X509CACert);\r | |
489 | }\r | |
4a567c96 | 490 | \r |
dda39f3a | 491 | if (CertStore != NULL) {\r |
492 | X509_STORE_free (CertStore);\r | |
493 | }\r | |
494 | \r | |
4a567c96 | 495 | return Status;\r |
496 | }\r | |
12d95665 LQ |
497 | \r |
498 | /**\r | |
499 | Retrieve the TBSCertificate from one given X.509 certificate.\r | |
500 | \r | |
501 | @param[in] Cert Pointer to the given DER-encoded X509 certificate.\r | |
502 | @param[in] CertSize Size of the X509 certificate in bytes.\r | |
503 | @param[out] TBSCert DER-Encoded To-Be-Signed certificate.\r | |
504 | @param[out] TBSCertSize Size of the TBS certificate in bytes.\r | |
505 | \r | |
506 | If Cert is NULL, then return FALSE.\r | |
507 | If TBSCert is NULL, then return FALSE.\r | |
508 | If TBSCertSize is NULL, then return FALSE.\r | |
509 | \r | |
510 | @retval TRUE The TBSCertificate was retrieved successfully.\r | |
511 | @retval FALSE Invalid X.509 certificate.\r | |
512 | \r | |
513 | **/\r | |
514 | BOOLEAN\r | |
515 | EFIAPI\r | |
516 | X509GetTBSCert (\r | |
517 | IN CONST UINT8 *Cert,\r | |
518 | IN UINTN CertSize,\r | |
519 | OUT UINT8 **TBSCert,\r | |
520 | OUT UINTN *TBSCertSize\r | |
521 | )\r | |
522 | {\r | |
523 | CONST UINT8 *Temp;\r | |
524 | INTN Asn1Tag;\r | |
525 | INTN ObjClass;\r | |
526 | UINTN Length;\r | |
527 | \r | |
528 | //\r | |
529 | // Check input parameters.\r | |
530 | //\r | |
1463ce18 QL |
531 | if ((Cert == NULL) || (TBSCert == NULL) ||\r |
532 | (TBSCertSize == NULL) || (CertSize > INT_MAX)) {\r | |
12d95665 LQ |
533 | return FALSE;\r |
534 | }\r | |
535 | \r | |
536 | //\r | |
537 | // An X.509 Certificate is: (defined in RFC3280)\r | |
538 | // Certificate ::= SEQUENCE {\r | |
539 | // tbsCertificate TBSCertificate,\r | |
540 | // signatureAlgorithm AlgorithmIdentifier,\r | |
541 | // signature BIT STRING }\r | |
542 | //\r | |
543 | // and\r | |
544 | //\r | |
545 | // TBSCertificate ::= SEQUENCE {\r | |
546 | // version [0] Version DEFAULT v1,\r | |
547 | // ...\r | |
548 | // }\r | |
549 | //\r | |
550 | // So we can just ASN1-parse the x.509 DER-encoded data. If we strip\r | |
551 | // the first SEQUENCE, the second SEQUENCE is the TBSCertificate.\r | |
552 | //\r | |
553 | Temp = Cert;\r | |
554 | ASN1_get_object (&Temp, (long *)&Length, (int *)&Asn1Tag, (int *)&ObjClass, (long)CertSize);\r | |
555 | \r | |
556 | if (Asn1Tag != V_ASN1_SEQUENCE) {\r | |
557 | return FALSE;\r | |
558 | }\r | |
559 | \r | |
560 | *TBSCert = (UINT8 *)Temp;\r | |
561 | \r | |
562 | ASN1_get_object (&Temp, (long *)&Length, (int *)&Asn1Tag, (int *)&ObjClass, (long)Length);\r | |
563 | //\r | |
564 | // Verify the parsed TBSCertificate is one correct SEQUENCE data.\r | |
565 | //\r | |
566 | if (Asn1Tag != V_ASN1_SEQUENCE) {\r | |
567 | return FALSE;\r | |
568 | }\r | |
569 | \r | |
570 | *TBSCertSize = Length + (Temp - *TBSCert);\r | |
571 | \r | |
572 | return TRUE;\r | |
573 | }\r |