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8931b30d DSH |
1 | /* crypto/cms/cms_sd.c */ |
2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
3 | * project. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2008 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | */ | |
53 | ||
54 | #include "cryptlib.h" | |
55 | #include <openssl/asn1t.h> | |
56 | #include <openssl/pem.h> | |
17c2764d | 57 | #include <openssl/x509.h> |
8931b30d DSH |
58 | #include <openssl/x509v3.h> |
59 | #include <openssl/err.h> | |
60 | #include <openssl/cms.h> | |
61 | #include "cms_lcl.h" | |
62 | #include "asn1_locl.h" | |
63 | ||
64 | /* CMS SignedData Utilities */ | |
65 | ||
66 | DECLARE_ASN1_ITEM(CMS_SignedData) | |
67 | ||
68 | static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms) | |
69 | { | |
70 | if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) | |
71 | { | |
72 | CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA); | |
73 | return NULL; | |
74 | } | |
75 | return cms->d.signedData; | |
76 | } | |
77 | ||
78 | static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms) | |
79 | { | |
80 | if (cms->d.other == NULL) | |
81 | { | |
82 | cms->d.signedData = M_ASN1_new_of(CMS_SignedData); | |
83 | if (!cms->d.signedData) | |
84 | { | |
85 | CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE); | |
86 | return NULL; | |
87 | } | |
88 | cms->d.signedData->version = 1; | |
89 | cms->d.signedData->encapContentInfo->eContentType = | |
90 | OBJ_nid2obj(NID_pkcs7_data); | |
761ffa72 | 91 | cms->d.signedData->encapContentInfo->partial = 1; |
8931b30d DSH |
92 | ASN1_OBJECT_free(cms->contentType); |
93 | cms->contentType = OBJ_nid2obj(NID_pkcs7_signed); | |
94 | return cms->d.signedData; | |
95 | } | |
96 | return cms_get0_signed(cms); | |
97 | } | |
98 | ||
99 | /* Just initialize SignedData e.g. for certs only structure */ | |
100 | ||
101 | int CMS_SignedData_init(CMS_ContentInfo *cms) | |
102 | { | |
103 | if (cms_signed_data_init(cms)) | |
104 | return 1; | |
105 | else | |
106 | return 0; | |
107 | } | |
108 | ||
109 | /* Check structures and fixup version numbers (if necessary) */ | |
110 | ||
111 | static void cms_sd_set_version(CMS_SignedData *sd) | |
112 | { | |
113 | int i; | |
114 | CMS_CertificateChoices *cch; | |
115 | CMS_RevocationInfoChoice *rch; | |
116 | CMS_SignerInfo *si; | |
117 | ||
118 | for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) | |
119 | { | |
120 | cch = sk_CMS_CertificateChoices_value(sd->certificates, i); | |
121 | if (cch->type == CMS_CERTCHOICE_OTHER) | |
122 | { | |
123 | if (sd->version < 5) | |
124 | sd->version = 5; | |
125 | } | |
126 | else if (cch->type == CMS_CERTCHOICE_V2ACERT) | |
127 | { | |
128 | if (sd->version < 4) | |
129 | sd->version = 4; | |
130 | } | |
131 | else if (cch->type == CMS_CERTCHOICE_V1ACERT) | |
132 | { | |
133 | if (sd->version < 3) | |
134 | sd->version = 3; | |
135 | } | |
136 | } | |
137 | ||
138 | for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) | |
139 | { | |
140 | rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i); | |
141 | if (rch->type == CMS_REVCHOICE_OTHER) | |
142 | { | |
143 | if (sd->version < 5) | |
144 | sd->version = 5; | |
145 | } | |
146 | } | |
147 | ||
148 | if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data) | |
149 | && (sd->version < 3)) | |
150 | sd->version = 3; | |
151 | ||
152 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) | |
153 | { | |
154 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
155 | if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) | |
156 | { | |
157 | if (si->version < 3) | |
158 | si->version = 3; | |
159 | if (sd->version < 3) | |
160 | sd->version = 3; | |
161 | } | |
162 | else | |
163 | sd->version = 1; | |
164 | } | |
165 | ||
166 | if (sd->version < 1) | |
167 | sd->version = 1; | |
168 | ||
169 | } | |
170 | ||
171 | /* Copy an existing messageDigest value */ | |
172 | ||
173 | static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si) | |
174 | { | |
175 | STACK_OF(CMS_SignerInfo) *sinfos; | |
176 | CMS_SignerInfo *sitmp; | |
177 | int i; | |
178 | sinfos = CMS_get0_SignerInfos(cms); | |
179 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) | |
180 | { | |
181 | ASN1_OCTET_STRING *messageDigest; | |
182 | sitmp = sk_CMS_SignerInfo_value(sinfos, i); | |
183 | if (sitmp == si) | |
184 | continue; | |
185 | if (CMS_signed_get_attr_count(sitmp) < 0) | |
186 | continue; | |
187 | if (OBJ_cmp(si->digestAlgorithm->algorithm, | |
188 | sitmp->digestAlgorithm->algorithm)) | |
189 | continue; | |
190 | messageDigest = CMS_signed_get0_data_by_OBJ(sitmp, | |
191 | OBJ_nid2obj(NID_pkcs9_messageDigest), | |
192 | -3, V_ASN1_OCTET_STRING); | |
193 | if (!messageDigest) | |
194 | { | |
195 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, | |
196 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, | |
201 | V_ASN1_OCTET_STRING, | |
202 | messageDigest, -1)) | |
203 | return 1; | |
204 | else | |
205 | return 0; | |
206 | } | |
207 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type) | |
212 | { | |
213 | switch(type) | |
214 | { | |
215 | case CMS_SIGNERINFO_ISSUER_SERIAL: | |
17c2764d DSH |
216 | if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert)) |
217 | return 0; | |
8931b30d DSH |
218 | break; |
219 | ||
220 | case CMS_SIGNERINFO_KEYIDENTIFIER: | |
17c2764d | 221 | if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert)) |
054307e7 | 222 | return 0; |
8931b30d DSH |
223 | break; |
224 | ||
225 | default: | |
226 | CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | sid->type = type; | |
231 | ||
232 | return 1; | |
8931b30d DSH |
233 | } |
234 | ||
235 | int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid, | |
236 | ASN1_OCTET_STRING **keyid, | |
237 | X509_NAME **issuer, ASN1_INTEGER **sno) | |
238 | { | |
239 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) | |
240 | { | |
241 | if (issuer) | |
242 | *issuer = sid->d.issuerAndSerialNumber->issuer; | |
243 | if (sno) | |
244 | *sno = sid->d.issuerAndSerialNumber->serialNumber; | |
245 | } | |
246 | else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) | |
247 | { | |
248 | if (keyid) | |
249 | *keyid = sid->d.subjectKeyIdentifier; | |
250 | } | |
251 | else | |
252 | return 0; | |
253 | return 1; | |
254 | } | |
255 | ||
256 | int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert) | |
257 | { | |
8931b30d | 258 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) |
17c2764d | 259 | return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert); |
8931b30d | 260 | else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) |
17c2764d | 261 | return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert); |
8931b30d DSH |
262 | else |
263 | return -1; | |
264 | } | |
265 | ||
e365352d DSH |
266 | static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd) |
267 | { | |
268 | EVP_PKEY *pkey = si->pkey; | |
269 | int i; | |
270 | if (!pkey->ameth || !pkey->ameth->pkey_ctrl) | |
271 | return 1; | |
272 | i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si); | |
273 | if (i == -2) | |
274 | { | |
275 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, | |
276 | CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); | |
277 | return 0; | |
278 | } | |
279 | if (i <= 0) | |
280 | { | |
281 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE); | |
282 | return 0; | |
283 | } | |
284 | return 1; | |
285 | } | |
286 | ||
8931b30d DSH |
287 | CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms, |
288 | X509 *signer, EVP_PKEY *pk, const EVP_MD *md, | |
289 | unsigned int flags) | |
290 | { | |
291 | CMS_SignedData *sd; | |
292 | CMS_SignerInfo *si = NULL; | |
293 | X509_ALGOR *alg; | |
294 | int i, type; | |
295 | if(!X509_check_private_key(signer, pk)) | |
296 | { | |
297 | CMSerr(CMS_F_CMS_ADD1_SIGNER, | |
298 | CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
299 | return NULL; | |
300 | } | |
301 | sd = cms_signed_data_init(cms); | |
302 | if (!sd) | |
303 | goto err; | |
304 | si = M_ASN1_new_of(CMS_SignerInfo); | |
305 | if (!si) | |
306 | goto merr; | |
307 | X509_check_purpose(signer, -1, -1); | |
308 | ||
309 | CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY); | |
310 | CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); | |
311 | ||
312 | si->pkey = pk; | |
313 | si->signer = signer; | |
e365352d DSH |
314 | EVP_MD_CTX_init(&si->mctx); |
315 | si->pctx = NULL; | |
8931b30d DSH |
316 | |
317 | if (flags & CMS_USE_KEYID) | |
318 | { | |
319 | si->version = 3; | |
320 | if (sd->version < 3) | |
321 | sd->version = 3; | |
322 | type = CMS_SIGNERINFO_KEYIDENTIFIER; | |
323 | } | |
324 | else | |
325 | { | |
326 | type = CMS_SIGNERINFO_ISSUER_SERIAL; | |
327 | si->version = 1; | |
328 | } | |
329 | ||
330 | if (!cms_set1_SignerIdentifier(si->sid, signer, type)) | |
331 | goto err; | |
332 | ||
333 | if (md == NULL) | |
334 | { | |
335 | int def_nid; | |
336 | if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0) | |
337 | goto err; | |
338 | md = EVP_get_digestbynid(def_nid); | |
339 | if (md == NULL) | |
340 | { | |
341 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST); | |
342 | goto err; | |
343 | } | |
344 | } | |
345 | ||
346 | if (!md) | |
347 | { | |
348 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET); | |
349 | goto err; | |
350 | } | |
351 | ||
31d66c2a | 352 | X509_ALGOR_set_md(si->digestAlgorithm, md); |
8931b30d DSH |
353 | |
354 | /* See if digest is present in digestAlgorithms */ | |
355 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) | |
356 | { | |
357 | ASN1_OBJECT *aoid; | |
358 | alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i); | |
359 | X509_ALGOR_get0(&aoid, NULL, NULL, alg); | |
360 | if (OBJ_obj2nid(aoid) == EVP_MD_type(md)) | |
361 | break; | |
362 | } | |
363 | ||
364 | if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) | |
365 | { | |
366 | alg = X509_ALGOR_new(); | |
367 | if (!alg) | |
368 | goto merr; | |
31d66c2a | 369 | X509_ALGOR_set_md(alg, md); |
8931b30d DSH |
370 | if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) |
371 | { | |
372 | X509_ALGOR_free(alg); | |
373 | goto merr; | |
374 | } | |
375 | } | |
376 | ||
e365352d DSH |
377 | if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) |
378 | goto err; | |
8931b30d DSH |
379 | if (!(flags & CMS_NOATTR)) |
380 | { | |
ff80280b DSH |
381 | /* Initialialize signed attributes strutucture so other |
382 | * attributes such as signing time etc are added later | |
383 | * even if we add none here. | |
384 | */ | |
385 | if (!si->signedAttrs) | |
386 | { | |
387 | si->signedAttrs = sk_X509_ATTRIBUTE_new_null(); | |
388 | if (!si->signedAttrs) | |
389 | goto merr; | |
390 | } | |
391 | ||
8931b30d DSH |
392 | if (!(flags & CMS_NOSMIMECAP)) |
393 | { | |
394 | STACK_OF(X509_ALGOR) *smcap = NULL; | |
395 | i = CMS_add_standard_smimecap(&smcap); | |
396 | if (i) | |
397 | i = CMS_add_smimecap(si, smcap); | |
398 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); | |
399 | if (!i) | |
400 | goto merr; | |
401 | } | |
402 | if (flags & CMS_REUSE_DIGEST) | |
403 | { | |
404 | if (!cms_copy_messageDigest(cms, si)) | |
405 | goto err; | |
e365352d | 406 | if (!(flags & (CMS_PARTIAL|CMS_KEY_PARAM)) && |
8931b30d DSH |
407 | !CMS_SignerInfo_sign(si)) |
408 | goto err; | |
409 | } | |
410 | } | |
411 | ||
412 | if (!(flags & CMS_NOCERTS)) | |
413 | { | |
414 | /* NB ignore -1 return for duplicate cert */ | |
415 | if (!CMS_add1_cert(cms, signer)) | |
416 | goto merr; | |
417 | } | |
418 | ||
e365352d DSH |
419 | if (flags & CMS_KEY_PARAM) |
420 | { | |
421 | if (flags & CMS_NOATTR) | |
422 | { | |
423 | si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL); | |
424 | if (!si->pctx) | |
425 | goto err; | |
426 | if (EVP_PKEY_sign_init(si->pctx) <= 0) | |
427 | goto err; | |
428 | if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0) | |
429 | goto err; | |
430 | } | |
431 | else if (EVP_DigestSignInit(&si->mctx, &si->pctx, md, NULL, pk) <= 0) | |
432 | goto err; | |
433 | } | |
434 | ||
8931b30d DSH |
435 | if (!sd->signerInfos) |
436 | sd->signerInfos = sk_CMS_SignerInfo_new_null(); | |
437 | if (!sd->signerInfos || | |
438 | !sk_CMS_SignerInfo_push(sd->signerInfos, si)) | |
439 | goto merr; | |
440 | ||
441 | return si; | |
442 | ||
443 | merr: | |
444 | CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE); | |
445 | err: | |
446 | if (si) | |
447 | M_ASN1_free_of(si, CMS_SignerInfo); | |
448 | return NULL; | |
449 | ||
450 | } | |
451 | ||
1e26a8ba | 452 | static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t) |
8931b30d DSH |
453 | { |
454 | ASN1_TIME *tt; | |
455 | int r = 0; | |
456 | if (t) | |
457 | tt = t; | |
458 | else | |
459 | tt = X509_gmtime_adj(NULL, 0); | |
460 | ||
461 | if (!tt) | |
462 | goto merr; | |
463 | ||
464 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime, | |
465 | tt->type, tt, -1) <= 0) | |
466 | goto merr; | |
467 | ||
468 | r = 1; | |
469 | ||
470 | merr: | |
471 | ||
472 | if (!t) | |
473 | ASN1_TIME_free(tt); | |
474 | ||
475 | if (!r) | |
476 | CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE); | |
477 | ||
478 | return r; | |
479 | ||
480 | } | |
481 | ||
e365352d DSH |
482 | EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si) |
483 | { | |
484 | return si->pctx; | |
485 | } | |
486 | ||
487 | EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si) | |
488 | { | |
489 | return &si->mctx; | |
490 | } | |
491 | ||
8931b30d DSH |
492 | STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms) |
493 | { | |
494 | CMS_SignedData *sd; | |
495 | sd = cms_get0_signed(cms); | |
496 | if (!sd) | |
497 | return NULL; | |
498 | return sd->signerInfos; | |
499 | } | |
500 | ||
501 | STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms) | |
502 | { | |
503 | STACK_OF(X509) *signers = NULL; | |
504 | STACK_OF(CMS_SignerInfo) *sinfos; | |
505 | CMS_SignerInfo *si; | |
506 | int i; | |
507 | sinfos = CMS_get0_SignerInfos(cms); | |
508 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) | |
509 | { | |
510 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
511 | if (si->signer) | |
512 | { | |
513 | if (!signers) | |
514 | { | |
515 | signers = sk_X509_new_null(); | |
516 | if (!signers) | |
517 | return NULL; | |
518 | } | |
519 | if (!sk_X509_push(signers, si->signer)) | |
520 | { | |
521 | sk_X509_free(signers); | |
522 | return NULL; | |
523 | } | |
524 | } | |
525 | } | |
526 | return signers; | |
527 | } | |
528 | ||
529 | void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer) | |
530 | { | |
531 | if (signer) | |
532 | { | |
533 | CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); | |
534 | if (si->pkey) | |
535 | EVP_PKEY_free(si->pkey); | |
536 | si->pkey = X509_get_pubkey(signer); | |
537 | } | |
538 | if (si->signer) | |
539 | X509_free(si->signer); | |
540 | si->signer = signer; | |
541 | } | |
542 | ||
543 | int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, | |
544 | ASN1_OCTET_STRING **keyid, | |
545 | X509_NAME **issuer, ASN1_INTEGER **sno) | |
546 | { | |
547 | return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno); | |
548 | } | |
549 | ||
550 | int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert) | |
551 | { | |
552 | return cms_SignerIdentifier_cert_cmp(si->sid, cert); | |
553 | } | |
554 | ||
555 | int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts, | |
556 | unsigned int flags) | |
557 | { | |
558 | CMS_SignedData *sd; | |
559 | CMS_SignerInfo *si; | |
560 | CMS_CertificateChoices *cch; | |
561 | STACK_OF(CMS_CertificateChoices) *certs; | |
562 | X509 *x; | |
563 | int i, j; | |
564 | int ret = 0; | |
565 | sd = cms_get0_signed(cms); | |
566 | if (!sd) | |
567 | return -1; | |
568 | certs = sd->certificates; | |
569 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) | |
570 | { | |
571 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
572 | if (si->signer) | |
573 | continue; | |
574 | ||
575 | for (j = 0; j < sk_X509_num(scerts); j++) | |
576 | { | |
577 | x = sk_X509_value(scerts, j); | |
578 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) | |
579 | { | |
580 | CMS_SignerInfo_set1_signer_cert(si, x); | |
581 | ret++; | |
582 | break; | |
583 | } | |
584 | } | |
585 | ||
586 | if (si->signer || (flags & CMS_NOINTERN)) | |
587 | continue; | |
588 | ||
589 | for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) | |
590 | { | |
591 | cch = sk_CMS_CertificateChoices_value(certs, j); | |
592 | if (cch->type != 0) | |
593 | continue; | |
594 | x = cch->d.certificate; | |
595 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) | |
596 | { | |
597 | CMS_SignerInfo_set1_signer_cert(si, x); | |
598 | ret++; | |
599 | break; | |
600 | } | |
601 | } | |
602 | } | |
603 | return ret; | |
604 | } | |
605 | ||
606 | void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, X509 **signer, | |
607 | X509_ALGOR **pdig, X509_ALGOR **psig) | |
608 | { | |
609 | if (pk) | |
610 | *pk = si->pkey; | |
611 | if (signer) | |
612 | *signer = si->signer; | |
613 | if (pdig) | |
614 | *pdig = si->digestAlgorithm; | |
615 | if (psig) | |
616 | *psig = si->signatureAlgorithm; | |
617 | } | |
618 | ||
da15c616 DSH |
619 | ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si) |
620 | { | |
621 | return si->signature; | |
622 | } | |
623 | ||
ff80280b DSH |
624 | static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms, |
625 | CMS_SignerInfo *si, BIO *chain) | |
8931b30d DSH |
626 | { |
627 | EVP_MD_CTX mctx; | |
628 | int r = 0; | |
e365352d | 629 | EVP_PKEY_CTX *pctx = NULL; |
8931b30d DSH |
630 | EVP_MD_CTX_init(&mctx); |
631 | ||
8931b30d DSH |
632 | if (!si->pkey) |
633 | { | |
634 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY); | |
635 | return 0; | |
636 | } | |
637 | ||
638 | if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) | |
639 | goto err; | |
e365352d DSH |
640 | /* Set SignerInfo algortihm details if we used custom parametsr */ |
641 | if (si->pctx && !cms_sd_asn1_ctrl(si, 0)) | |
642 | goto err; | |
8931b30d DSH |
643 | |
644 | /* If any signed attributes calculate and add messageDigest attribute */ | |
645 | ||
646 | if (CMS_signed_get_attr_count(si) >= 0) | |
647 | { | |
ff80280b DSH |
648 | ASN1_OBJECT *ctype = |
649 | cms->d.signedData->encapContentInfo->eContentType; | |
8931b30d DSH |
650 | unsigned char md[EVP_MAX_MD_SIZE]; |
651 | unsigned int mdlen; | |
b6dcdbfc DSH |
652 | if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) |
653 | goto err; | |
8931b30d DSH |
654 | if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, |
655 | V_ASN1_OCTET_STRING, | |
656 | md, mdlen)) | |
657 | goto err; | |
ff80280b DSH |
658 | /* Copy content type across */ |
659 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType, | |
660 | V_ASN1_OBJECT, ctype, -1) <= 0) | |
661 | goto err; | |
8931b30d DSH |
662 | if (!CMS_SignerInfo_sign(si)) |
663 | goto err; | |
664 | } | |
e365352d DSH |
665 | else if (si->pctx) |
666 | { | |
667 | unsigned char *sig; | |
668 | size_t siglen; | |
669 | unsigned char md[EVP_MAX_MD_SIZE]; | |
670 | unsigned int mdlen; | |
671 | pctx = si->pctx; | |
672 | if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) | |
673 | goto err; | |
e0f7cfda DSH |
674 | siglen = EVP_PKEY_size(si->pkey); |
675 | sig = OPENSSL_malloc(siglen); | |
e365352d DSH |
676 | if (!sig) |
677 | { | |
678 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, | |
679 | ERR_R_MALLOC_FAILURE); | |
680 | goto err; | |
681 | } | |
682 | if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) | |
683 | goto err; | |
684 | ASN1_STRING_set0(si->signature, sig, siglen); | |
685 | } | |
8931b30d DSH |
686 | else |
687 | { | |
688 | unsigned char *sig; | |
689 | unsigned int siglen; | |
690 | sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey)); | |
691 | if (!sig) | |
692 | { | |
693 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, | |
694 | ERR_R_MALLOC_FAILURE); | |
695 | goto err; | |
696 | } | |
697 | if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) | |
698 | { | |
699 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, | |
700 | CMS_R_SIGNFINAL_ERROR); | |
701 | OPENSSL_free(sig); | |
702 | goto err; | |
703 | } | |
704 | ASN1_STRING_set0(si->signature, sig, siglen); | |
705 | } | |
706 | ||
707 | r = 1; | |
708 | ||
709 | err: | |
710 | EVP_MD_CTX_cleanup(&mctx); | |
e365352d DSH |
711 | if (pctx) |
712 | EVP_PKEY_CTX_free(pctx); | |
8931b30d DSH |
713 | return r; |
714 | ||
715 | } | |
716 | ||
717 | int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain) | |
718 | { | |
719 | STACK_OF(CMS_SignerInfo) *sinfos; | |
720 | CMS_SignerInfo *si; | |
721 | int i; | |
722 | sinfos = CMS_get0_SignerInfos(cms); | |
723 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) | |
724 | { | |
725 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
ff80280b | 726 | if (!cms_SignerInfo_content_sign(cms, si, chain)) |
8931b30d DSH |
727 | return 0; |
728 | } | |
761ffa72 | 729 | cms->d.signedData->encapContentInfo->partial = 0; |
8931b30d DSH |
730 | return 1; |
731 | } | |
732 | ||
733 | int CMS_SignerInfo_sign(CMS_SignerInfo *si) | |
734 | { | |
e365352d | 735 | EVP_MD_CTX *mctx = &si->mctx; |
8931b30d DSH |
736 | EVP_PKEY_CTX *pctx; |
737 | unsigned char *abuf = NULL; | |
738 | int alen; | |
739 | size_t siglen; | |
740 | const EVP_MD *md = NULL; | |
741 | ||
742 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
743 | if (md == NULL) | |
744 | return 0; | |
745 | ||
8931b30d DSH |
746 | |
747 | if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) | |
748 | { | |
1e26a8ba | 749 | if (!cms_add1_signingTime(si, NULL)) |
8931b30d DSH |
750 | goto err; |
751 | } | |
752 | ||
e365352d DSH |
753 | if (si->pctx) |
754 | pctx = si->pctx; | |
755 | else | |
756 | { | |
757 | EVP_MD_CTX_init(mctx); | |
758 | if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0) | |
759 | goto err; | |
760 | } | |
8931b30d DSH |
761 | |
762 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
763 | EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) | |
764 | { | |
765 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
766 | goto err; | |
767 | } | |
768 | ||
769 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs,&abuf, | |
770 | ASN1_ITEM_rptr(CMS_Attributes_Sign)); | |
771 | if(!abuf) | |
772 | goto err; | |
e365352d | 773 | if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0) |
8931b30d | 774 | goto err; |
e365352d | 775 | if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0) |
8931b30d DSH |
776 | goto err; |
777 | OPENSSL_free(abuf); | |
778 | abuf = OPENSSL_malloc(siglen); | |
779 | if(!abuf) | |
780 | goto err; | |
e365352d | 781 | if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0) |
8931b30d DSH |
782 | goto err; |
783 | ||
784 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
785 | EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) | |
786 | { | |
787 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
788 | goto err; | |
789 | } | |
790 | ||
e365352d | 791 | EVP_MD_CTX_cleanup(mctx); |
8931b30d DSH |
792 | |
793 | ASN1_STRING_set0(si->signature, abuf, siglen); | |
794 | ||
795 | return 1; | |
796 | ||
797 | err: | |
798 | if (abuf) | |
799 | OPENSSL_free(abuf); | |
e365352d | 800 | EVP_MD_CTX_cleanup(mctx); |
8931b30d DSH |
801 | return 0; |
802 | ||
803 | } | |
804 | ||
805 | int CMS_SignerInfo_verify(CMS_SignerInfo *si) | |
806 | { | |
e365352d | 807 | EVP_MD_CTX *mctx = &si->mctx; |
8931b30d DSH |
808 | unsigned char *abuf = NULL; |
809 | int alen, r = -1; | |
810 | const EVP_MD *md = NULL; | |
811 | ||
812 | if (!si->pkey) | |
813 | { | |
814 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY); | |
815 | return -1; | |
816 | } | |
817 | ||
818 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
819 | if (md == NULL) | |
820 | return -1; | |
e365352d DSH |
821 | EVP_MD_CTX_init(mctx); |
822 | if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0) | |
823 | goto err; | |
824 | ||
825 | if (!cms_sd_asn1_ctrl(si, 1)) | |
8931b30d DSH |
826 | goto err; |
827 | ||
828 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs,&abuf, | |
829 | ASN1_ITEM_rptr(CMS_Attributes_Verify)); | |
830 | if(!abuf) | |
831 | goto err; | |
e365352d | 832 | r = EVP_DigestVerifyUpdate(mctx, abuf, alen); |
8931b30d DSH |
833 | OPENSSL_free(abuf); |
834 | if (r <= 0) | |
835 | { | |
836 | r = -1; | |
837 | goto err; | |
838 | } | |
e365352d | 839 | r = EVP_DigestVerifyFinal(mctx, |
8931b30d | 840 | si->signature->data, si->signature->length); |
d7106112 | 841 | if (r <= 0) |
8931b30d DSH |
842 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE); |
843 | err: | |
e365352d | 844 | EVP_MD_CTX_cleanup(mctx); |
8931b30d DSH |
845 | return r; |
846 | } | |
847 | ||
848 | /* Create a chain of digest BIOs from a CMS ContentInfo */ | |
849 | ||
850 | BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms) | |
851 | { | |
852 | int i; | |
853 | CMS_SignedData *sd; | |
854 | BIO *chain = NULL; | |
855 | sd = cms_get0_signed(cms); | |
8931b30d DSH |
856 | if (!sd) |
857 | return NULL; | |
761ffa72 DSH |
858 | if (cms->d.signedData->encapContentInfo->partial) |
859 | cms_sd_set_version(sd); | |
8931b30d DSH |
860 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) |
861 | { | |
862 | X509_ALGOR *digestAlgorithm; | |
863 | BIO *mdbio; | |
864 | digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i); | |
865 | mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm); | |
866 | if (!mdbio) | |
867 | goto err; | |
868 | if (chain) | |
869 | BIO_push(chain, mdbio); | |
870 | else | |
871 | chain = mdbio; | |
872 | } | |
873 | return chain; | |
874 | err: | |
875 | if (chain) | |
876 | BIO_free_all(chain); | |
877 | return NULL; | |
878 | } | |
879 | ||
880 | int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain) | |
881 | { | |
882 | ASN1_OCTET_STRING *os = NULL; | |
883 | EVP_MD_CTX mctx; | |
e365352d | 884 | EVP_PKEY_CTX *pkctx = NULL; |
8931b30d | 885 | int r = -1; |
e365352d DSH |
886 | unsigned char mval[EVP_MAX_MD_SIZE]; |
887 | unsigned int mlen; | |
8931b30d DSH |
888 | EVP_MD_CTX_init(&mctx); |
889 | /* If we have any signed attributes look for messageDigest value */ | |
890 | if (CMS_signed_get_attr_count(si) >= 0) | |
891 | { | |
892 | os = CMS_signed_get0_data_by_OBJ(si, | |
893 | OBJ_nid2obj(NID_pkcs9_messageDigest), | |
894 | -3, V_ASN1_OCTET_STRING); | |
895 | if (!os) | |
896 | { | |
897 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
898 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
899 | goto err; | |
900 | } | |
901 | } | |
902 | ||
903 | if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) | |
904 | goto err; | |
905 | ||
e365352d DSH |
906 | if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) |
907 | { | |
908 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
909 | CMS_R_UNABLE_TO_FINALIZE_CONTEXT); | |
910 | goto err; | |
911 | } | |
912 | ||
8931b30d DSH |
913 | /* If messageDigest found compare it */ |
914 | ||
915 | if (os) | |
916 | { | |
1e26a8ba | 917 | if (mlen != (unsigned int)os->length) |
8931b30d DSH |
918 | { |
919 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
920 | CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH); | |
921 | goto err; | |
922 | } | |
923 | ||
924 | if (memcmp(mval, os->data, mlen)) | |
925 | { | |
926 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
927 | CMS_R_VERIFICATION_FAILURE); | |
928 | r = 0; | |
929 | } | |
930 | else | |
931 | r = 1; | |
932 | } | |
933 | else | |
934 | { | |
e365352d DSH |
935 | const EVP_MD *md = EVP_MD_CTX_md(&mctx); |
936 | pkctx = EVP_PKEY_CTX_new(si->pkey, NULL); | |
937 | if (EVP_PKEY_verify_init(pkctx) <= 0) | |
938 | goto err; | |
939 | if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0) | |
940 | goto err; | |
941 | si->pctx = pkctx; | |
942 | if (!cms_sd_asn1_ctrl(si, 1)) | |
943 | goto err; | |
944 | r = EVP_PKEY_verify(pkctx, si->signature->data, | |
945 | si->signature->length, | |
946 | mval, mlen); | |
8931b30d DSH |
947 | if (r <= 0) |
948 | { | |
949 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
950 | CMS_R_VERIFICATION_FAILURE); | |
951 | r = 0; | |
952 | } | |
953 | } | |
954 | ||
955 | err: | |
e365352d DSH |
956 | if (pkctx) |
957 | EVP_PKEY_CTX_free(pkctx); | |
8931b30d DSH |
958 | EVP_MD_CTX_cleanup(&mctx); |
959 | return r; | |
960 | ||
961 | } | |
962 | ||
963 | int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs) | |
964 | { | |
965 | unsigned char *smder = NULL; | |
966 | int smderlen, r; | |
967 | smderlen = i2d_X509_ALGORS(algs, &smder); | |
968 | if (smderlen <= 0) | |
969 | return 0; | |
970 | r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities, | |
971 | V_ASN1_SEQUENCE, smder, smderlen); | |
972 | OPENSSL_free(smder); | |
973 | return r; | |
974 | } | |
975 | ||
976 | int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, | |
977 | int algnid, int keysize) | |
978 | { | |
979 | X509_ALGOR *alg; | |
980 | ASN1_INTEGER *key = NULL; | |
981 | if (keysize > 0) | |
982 | { | |
983 | key = ASN1_INTEGER_new(); | |
984 | if (!key || !ASN1_INTEGER_set(key, keysize)) | |
985 | return 0; | |
986 | } | |
987 | alg = X509_ALGOR_new(); | |
988 | if (!alg) | |
989 | { | |
990 | if (key) | |
991 | ASN1_INTEGER_free(key); | |
992 | return 0; | |
993 | } | |
994 | ||
995 | X509_ALGOR_set0(alg, OBJ_nid2obj(algnid), | |
996 | key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key); | |
997 | if (!*algs) | |
998 | *algs = sk_X509_ALGOR_new_null(); | |
999 | if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) | |
1000 | { | |
1001 | X509_ALGOR_free(alg); | |
1002 | return 0; | |
1003 | } | |
1004 | return 1; | |
1005 | } | |
1006 | ||
1007 | /* Check to see if a cipher exists and if so add S/MIME capabilities */ | |
1008 | ||
1009 | static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
1010 | { | |
1011 | if (EVP_get_cipherbynid(nid)) | |
1012 | return CMS_add_simple_smimecap(sk, nid, arg); | |
1013 | return 1; | |
1014 | } | |
1015 | ||
1016 | static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
1017 | { | |
1018 | if (EVP_get_digestbynid(nid)) | |
1019 | return CMS_add_simple_smimecap(sk, nid, arg); | |
1020 | return 1; | |
1021 | } | |
1022 | ||
1023 | int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap) | |
1024 | { | |
1025 | if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1) | |
1026 | || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1) | |
1027 | || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) | |
1028 | || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1) | |
1029 | || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1) | |
1030 | || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) | |
1031 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128) | |
1032 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64) | |
1033 | || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1) | |
1034 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40)) | |
1035 | return 0; | |
1036 | return 1; | |
1037 | } |