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Diffstat (limited to 'src/lib/libcrypto/cms/cms_sd.c')
-rw-r--r--src/lib/libcrypto/cms/cms_sd.c934
1 files changed, 0 insertions, 934 deletions
diff --git a/src/lib/libcrypto/cms/cms_sd.c b/src/lib/libcrypto/cms/cms_sd.c
deleted file mode 100644
index 1623126e77..0000000000
--- a/src/lib/libcrypto/cms/cms_sd.c
+++ /dev/null
@@ -1,934 +0,0 @@
1/* $OpenBSD: cms_sd.c,v 1.10 2016/03/11 07:08:44 mmcc Exp $ */
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 <openssl/asn1t.h>
55#include <openssl/cms.h>
56#include <openssl/err.h>
57#include <openssl/pem.h>
58#include <openssl/x509v3.h>
59
60#include "asn1_locl.h"
61#include "cms_lcl.h"
62
63/* CMS SignedData Utilities */
64
65DECLARE_ASN1_ITEM(CMS_SignedData)
66
67static CMS_SignedData *
68cms_get0_signed(CMS_ContentInfo *cms)
69{
70 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
71 CMSerr(CMS_F_CMS_GET0_SIGNED,
72 CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
73 return NULL;
74 }
75 return cms->d.signedData;
76}
77
78static CMS_SignedData *
79cms_signed_data_init(CMS_ContentInfo *cms)
80{
81 if (cms->d.other == NULL) {
82 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
83 if (!cms->d.signedData) {
84 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT,
85 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);
91 cms->d.signedData->encapContentInfo->partial = 1;
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
101int
102CMS_SignedData_init(CMS_ContentInfo *cms)
103{
104 if (cms_signed_data_init(cms))
105 return 1;
106 else
107 return 0;
108}
109
110/* Check structures and fixup version numbers (if necessary) */
111
112static void
113cms_sd_set_version(CMS_SignedData *sd)
114{
115 int i;
116 CMS_CertificateChoices *cch;
117 CMS_RevocationInfoChoice *rch;
118 CMS_SignerInfo *si;
119
120 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
121 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
122 if (cch->type == CMS_CERTCHOICE_OTHER) {
123 if (sd->version < 5)
124 sd->version = 5;
125 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
126 if (sd->version < 4)
127 sd->version = 4;
128 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
129 if (sd->version < 3)
130 sd->version = 3;
131 }
132 }
133
134 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
135 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
136 if (rch->type == CMS_REVCHOICE_OTHER) {
137 if (sd->version < 5)
138 sd->version = 5;
139 }
140 }
141
142 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) !=
143 NID_pkcs7_data) && (sd->version < 3))
144 sd->version = 3;
145
146 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
147 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
148 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
149 if (si->version < 3)
150 si->version = 3;
151 if (sd->version < 3)
152 sd->version = 3;
153 } else if (si->version < 1)
154 si->version = 1;
155 }
156
157 if (sd->version < 1)
158 sd->version = 1;
159}
160
161/* Copy an existing messageDigest value */
162
163static int
164cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
165{
166 STACK_OF(CMS_SignerInfo) *sinfos;
167 CMS_SignerInfo *sitmp;
168 int i;
169
170 sinfos = CMS_get0_SignerInfos(cms);
171 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
172 ASN1_OCTET_STRING *messageDigest;
173 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
174 if (sitmp == si)
175 continue;
176 if (CMS_signed_get_attr_count(sitmp) < 0)
177 continue;
178 if (OBJ_cmp(si->digestAlgorithm->algorithm,
179 sitmp->digestAlgorithm->algorithm))
180 continue;
181 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
182 OBJ_nid2obj(NID_pkcs9_messageDigest),
183 -3, V_ASN1_OCTET_STRING);
184 if (!messageDigest) {
185 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
186 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
187 return 0;
188 }
189
190 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
191 V_ASN1_OCTET_STRING,
192 messageDigest, -1))
193 return 1;
194 else
195 return 0;
196 }
197 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
198 return 0;
199}
200
201int
202cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type)
203{
204 switch (type) {
205 case CMS_SIGNERINFO_ISSUER_SERIAL:
206 sid->d.issuerAndSerialNumber =
207 M_ASN1_new_of(CMS_IssuerAndSerialNumber);
208 if (!sid->d.issuerAndSerialNumber)
209 goto merr;
210 if (!X509_NAME_set(&sid->d.issuerAndSerialNumber->issuer,
211 X509_get_issuer_name(cert)))
212 goto merr;
213 if (!ASN1_STRING_copy(
214 sid->d.issuerAndSerialNumber->serialNumber,
215 X509_get_serialNumber(cert)))
216 goto merr;
217 break;
218
219 case CMS_SIGNERINFO_KEYIDENTIFIER:
220 if (!cert->skid) {
221 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER,
222 CMS_R_CERTIFICATE_HAS_NO_KEYID);
223 return 0;
224 }
225 sid->d.subjectKeyIdentifier = ASN1_STRING_dup(cert->skid);
226 if (!sid->d.subjectKeyIdentifier)
227 goto merr;
228 break;
229
230 default:
231 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
232 return 0;
233 }
234
235 sid->type = type;
236
237 return 1;
238
239merr:
240 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, ERR_R_MALLOC_FAILURE);
241 return 0;
242}
243
244int
245cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
246 ASN1_OCTET_STRING **keyid, X509_NAME **issuer, ASN1_INTEGER **sno)
247{
248 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
249 if (issuer)
250 *issuer = sid->d.issuerAndSerialNumber->issuer;
251 if (sno)
252 *sno = sid->d.issuerAndSerialNumber->serialNumber;
253 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
254 if (keyid)
255 *keyid = sid->d.subjectKeyIdentifier;
256 } else
257 return 0;
258 return 1;
259}
260
261int
262cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
263{
264 int ret;
265
266 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
267 ret = X509_NAME_cmp(sid->d.issuerAndSerialNumber->issuer,
268 X509_get_issuer_name(cert));
269 if (ret)
270 return ret;
271 return ASN1_INTEGER_cmp(sid->d.issuerAndSerialNumber->serialNumber,
272 X509_get_serialNumber(cert));
273 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
274 X509_check_purpose(cert, -1, -1);
275 if (!cert->skid)
276 return -1;
277 return ASN1_OCTET_STRING_cmp(sid->d.subjectKeyIdentifier,
278 cert->skid);
279 } else
280 return -1;
281}
282
283CMS_SignerInfo *
284CMS_add1_signer(CMS_ContentInfo *cms, X509 *signer, EVP_PKEY *pk,
285 const EVP_MD *md, unsigned int flags)
286{
287 CMS_SignedData *sd;
288 CMS_SignerInfo *si = NULL;
289 X509_ALGOR *alg;
290 int i, type;
291
292 if (!X509_check_private_key(signer, pk)) {
293 CMSerr(CMS_F_CMS_ADD1_SIGNER,
294 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
295 return NULL;
296 }
297 sd = cms_signed_data_init(cms);
298 if (!sd)
299 goto err;
300 si = M_ASN1_new_of(CMS_SignerInfo);
301 if (!si)
302 goto merr;
303 X509_check_purpose(signer, -1, -1);
304
305 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
306 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
307
308 si->pkey = pk;
309 si->signer = signer;
310
311 if (flags & CMS_USE_KEYID) {
312 si->version = 3;
313 if (sd->version < 3)
314 sd->version = 3;
315 type = CMS_SIGNERINFO_KEYIDENTIFIER;
316 } else {
317 type = CMS_SIGNERINFO_ISSUER_SERIAL;
318 si->version = 1;
319 }
320
321 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
322 goto err;
323
324 if (md == NULL) {
325 int def_nid;
326 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
327 goto err;
328 md = EVP_get_digestbynid(def_nid);
329 if (md == NULL) {
330 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
331 goto err;
332 }
333 }
334
335 if (!md) {
336 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
337 goto err;
338 }
339
340 cms_DigestAlgorithm_set(si->digestAlgorithm, md);
341
342 /* See if digest is present in digestAlgorithms */
343 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
344 ASN1_OBJECT *aoid;
345 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
346 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
347 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
348 break;
349 }
350
351 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
352 alg = X509_ALGOR_new();
353 if (!alg)
354 goto merr;
355 cms_DigestAlgorithm_set(alg, md);
356 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
357 X509_ALGOR_free(alg);
358 goto merr;
359 }
360 }
361
362 if (pk->ameth && pk->ameth->pkey_ctrl) {
363 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_SIGN,
364 0, si);
365 if (i == -2) {
366 CMSerr(CMS_F_CMS_ADD1_SIGNER,
367 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
368 goto err;
369 }
370 if (i <= 0) {
371 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_CTRL_FAILURE);
372 goto err;
373 }
374 }
375
376 if (!(flags & CMS_NOATTR)) {
377 /* Initialialize signed attributes strutucture so other
378 * attributes such as signing time etc are added later
379 * even if we add none here.
380 */
381 if (!si->signedAttrs) {
382 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
383 if (!si->signedAttrs)
384 goto merr;
385 }
386
387 if (!(flags & CMS_NOSMIMECAP)) {
388 STACK_OF(X509_ALGOR) *smcap = NULL;
389 i = CMS_add_standard_smimecap(&smcap);
390 if (i)
391 i = CMS_add_smimecap(si, smcap);
392 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
393 if (!i)
394 goto merr;
395 }
396 if (flags & CMS_REUSE_DIGEST) {
397 if (!cms_copy_messageDigest(cms, si))
398 goto err;
399 if (!(flags & CMS_PARTIAL) &&
400 !CMS_SignerInfo_sign(si))
401 goto err;
402 }
403 }
404
405 if (!(flags & CMS_NOCERTS)) {
406 /* NB ignore -1 return for duplicate cert */
407 if (!CMS_add1_cert(cms, signer))
408 goto merr;
409 }
410
411 if (!sd->signerInfos)
412 sd->signerInfos = sk_CMS_SignerInfo_new_null();
413 if (!sd->signerInfos ||
414 !sk_CMS_SignerInfo_push(sd->signerInfos, si))
415 goto merr;
416
417 return si;
418
419merr:
420 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
421err:
422 if (si)
423 M_ASN1_free_of(si, CMS_SignerInfo);
424 return NULL;
425}
426
427static int
428cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
429{
430 ASN1_TIME *tt;
431 int r = 0;
432
433 if (t)
434 tt = t;
435 else
436 tt = X509_gmtime_adj(NULL, 0);
437
438 if (!tt)
439 goto merr;
440
441 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
442 tt->type, tt, -1) <= 0)
443 goto merr;
444
445 r = 1;
446
447merr:
448 if (!t)
449 ASN1_TIME_free(tt);
450 if (!r)
451 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
452
453 return r;
454}
455
456STACK_OF(CMS_SignerInfo) *
457CMS_get0_SignerInfos(CMS_ContentInfo *cms)
458{
459 CMS_SignedData *sd;
460
461 sd = cms_get0_signed(cms);
462 if (!sd)
463 return NULL;
464 return sd->signerInfos;
465}
466
467STACK_OF(X509) *
468CMS_get0_signers(CMS_ContentInfo *cms)
469{
470 STACK_OF(X509) *signers = NULL;
471 STACK_OF(CMS_SignerInfo) *sinfos;
472 CMS_SignerInfo *si;
473 int i;
474
475 sinfos = CMS_get0_SignerInfos(cms);
476 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
477 si = sk_CMS_SignerInfo_value(sinfos, i);
478 if (si->signer) {
479 if (!signers) {
480 signers = sk_X509_new_null();
481 if (!signers)
482 return NULL;
483 }
484 if (!sk_X509_push(signers, si->signer)) {
485 sk_X509_free(signers);
486 return NULL;
487 }
488 }
489 }
490 return signers;
491}
492
493void
494CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
495{
496 if (signer) {
497 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
498 EVP_PKEY_free(si->pkey);
499 si->pkey = X509_get_pubkey(signer);
500 }
501 X509_free(si->signer);
502 si->signer = signer;
503}
504
505int
506CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, ASN1_OCTET_STRING **keyid,
507 X509_NAME **issuer, ASN1_INTEGER **sno)
508{
509 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
510}
511
512int
513CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
514{
515 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
516}
517
518int
519CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
520 unsigned int flags)
521{
522 CMS_SignedData *sd;
523 CMS_SignerInfo *si;
524 CMS_CertificateChoices *cch;
525 STACK_OF(CMS_CertificateChoices) *certs;
526 X509 *x;
527 int i, j;
528 int ret = 0;
529
530 sd = cms_get0_signed(cms);
531 if (!sd)
532 return -1;
533 certs = sd->certificates;
534 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
535 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
536 if (si->signer)
537 continue;
538
539 for (j = 0; j < sk_X509_num(scerts); j++) {
540 x = sk_X509_value(scerts, j);
541 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
542 CMS_SignerInfo_set1_signer_cert(si, x);
543 ret++;
544 break;
545 }
546 }
547
548 if (si->signer || (flags & CMS_NOINTERN))
549 continue;
550
551 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
552 cch = sk_CMS_CertificateChoices_value(certs, j);
553 if (cch->type != 0)
554 continue;
555 x = cch->d.certificate;
556 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
557 CMS_SignerInfo_set1_signer_cert(si, x);
558 ret++;
559 break;
560 }
561 }
562 }
563 return ret;
564}
565
566void
567CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, X509 **signer,
568 X509_ALGOR **pdig, X509_ALGOR **psig)
569{
570 if (pk)
571 *pk = si->pkey;
572 if (signer)
573 *signer = si->signer;
574 if (pdig)
575 *pdig = si->digestAlgorithm;
576 if (psig)
577 *psig = si->signatureAlgorithm;
578}
579
580static int
581cms_SignerInfo_content_sign(CMS_ContentInfo *cms, CMS_SignerInfo *si,
582 BIO *chain)
583{
584 EVP_MD_CTX mctx;
585 int r = 0;
586 EVP_MD_CTX_init(&mctx);
587
588 if (!si->pkey) {
589 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
590 return 0;
591 }
592
593 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
594 goto err;
595
596 /* If any signed attributes calculate and add messageDigest attribute */
597
598 if (CMS_signed_get_attr_count(si) >= 0) {
599 ASN1_OBJECT *ctype =
600 cms->d.signedData->encapContentInfo->eContentType;
601 unsigned char md[EVP_MAX_MD_SIZE];
602 unsigned int mdlen;
603 if (!EVP_DigestFinal_ex(&mctx, md, &mdlen))
604 goto err;
605 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
606 V_ASN1_OCTET_STRING,
607 md, mdlen))
608 goto err;
609 /* Copy content type across */
610 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
611 V_ASN1_OBJECT, ctype, -1) <= 0)
612 goto err;
613 if (!CMS_SignerInfo_sign(si))
614 goto err;
615 } else {
616 unsigned char *sig;
617 unsigned int siglen;
618 sig = malloc(EVP_PKEY_size(si->pkey));
619 if (!sig) {
620 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN,
621 ERR_R_MALLOC_FAILURE);
622 goto err;
623 }
624 if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) {
625 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN,
626 CMS_R_SIGNFINAL_ERROR);
627 free(sig);
628 goto err;
629 }
630 ASN1_STRING_set0(si->signature, sig, siglen);
631 }
632
633 r = 1;
634
635err:
636 EVP_MD_CTX_cleanup(&mctx);
637 return r;
638}
639
640int
641cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
642{
643 STACK_OF(CMS_SignerInfo) *sinfos;
644 CMS_SignerInfo *si;
645 int i;
646
647 sinfos = CMS_get0_SignerInfos(cms);
648 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
649 si = sk_CMS_SignerInfo_value(sinfos, i);
650 if (!cms_SignerInfo_content_sign(cms, si, chain))
651 return 0;
652 }
653 cms->d.signedData->encapContentInfo->partial = 0;
654 return 1;
655}
656
657int
658CMS_SignerInfo_sign(CMS_SignerInfo *si)
659{
660 EVP_MD_CTX mctx;
661 EVP_PKEY_CTX *pctx;
662 unsigned char *abuf = NULL;
663 int alen;
664 size_t siglen;
665 const EVP_MD *md = NULL;
666
667 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
668 if (md == NULL)
669 return 0;
670
671 EVP_MD_CTX_init(&mctx);
672
673 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
674 if (!cms_add1_signingTime(si, NULL))
675 goto err;
676 }
677
678 if (EVP_DigestSignInit(&mctx, &pctx, md, NULL, si->pkey) <= 0)
679 goto err;
680
681 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
682 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
683 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
684 goto err;
685 }
686
687 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
688 ASN1_ITEM_rptr(CMS_Attributes_Sign));
689 if (!abuf)
690 goto err;
691 if (EVP_DigestSignUpdate(&mctx, abuf, alen) <= 0)
692 goto err;
693 if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0)
694 goto err;
695 free(abuf);
696 abuf = malloc(siglen);
697 if (!abuf)
698 goto err;
699 if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0)
700 goto err;
701
702 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
703 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
704 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
705 goto err;
706 }
707
708 EVP_MD_CTX_cleanup(&mctx);
709
710 ASN1_STRING_set0(si->signature, abuf, siglen);
711
712 return 1;
713
714err:
715 free(abuf);
716 EVP_MD_CTX_cleanup(&mctx);
717 return 0;
718}
719
720int
721CMS_SignerInfo_verify(CMS_SignerInfo *si)
722{
723 EVP_MD_CTX mctx;
724 EVP_PKEY_CTX *pctx;
725 unsigned char *abuf = NULL;
726 int alen, r = -1;
727 const EVP_MD *md = NULL;
728
729 if (!si->pkey) {
730 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
731 return -1;
732 }
733
734 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
735 if (md == NULL)
736 return -1;
737 EVP_MD_CTX_init(&mctx);
738 if (EVP_DigestVerifyInit(&mctx, &pctx, md, NULL, si->pkey) <= 0)
739 goto err;
740
741 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
742 ASN1_ITEM_rptr(CMS_Attributes_Verify));
743 if (!abuf)
744 goto err;
745 r = EVP_DigestVerifyUpdate(&mctx, abuf, alen);
746 free(abuf);
747 if (r <= 0) {
748 r = -1;
749 goto err;
750 }
751 r = EVP_DigestVerifyFinal(&mctx,
752 si->signature->data, si->signature->length);
753 if (r <= 0)
754 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
755
756err:
757 EVP_MD_CTX_cleanup(&mctx);
758 return r;
759}
760
761/* Create a chain of digest BIOs from a CMS ContentInfo */
762
763BIO *
764cms_SignedData_init_bio(CMS_ContentInfo *cms)
765{
766 int i;
767 CMS_SignedData *sd;
768 BIO *chain = NULL;
769
770 sd = cms_get0_signed(cms);
771 if (!sd)
772 return NULL;
773 if (cms->d.signedData->encapContentInfo->partial)
774 cms_sd_set_version(sd);
775 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
776 X509_ALGOR *digestAlgorithm;
777 BIO *mdbio;
778 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
779 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
780 if (!mdbio)
781 goto err;
782 if (chain)
783 BIO_push(chain, mdbio);
784 else
785 chain = mdbio;
786 }
787 return chain;
788
789err:
790 if (chain)
791 BIO_free_all(chain);
792 return NULL;
793}
794
795int
796CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
797{
798 ASN1_OCTET_STRING *os = NULL;
799 EVP_MD_CTX mctx;
800 int r = -1;
801
802 EVP_MD_CTX_init(&mctx);
803 /* If we have any signed attributes look for messageDigest value */
804 if (CMS_signed_get_attr_count(si) >= 0) {
805 os = CMS_signed_get0_data_by_OBJ(si,
806 OBJ_nid2obj(NID_pkcs9_messageDigest),
807 -3, V_ASN1_OCTET_STRING);
808 if (!os) {
809 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
810 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
811 goto err;
812 }
813 }
814
815 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
816 goto err;
817
818 /* If messageDigest found compare it */
819
820 if (os) {
821 unsigned char mval[EVP_MAX_MD_SIZE];
822 unsigned int mlen;
823 if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) {
824 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
825 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
826 goto err;
827 }
828 if (mlen != (unsigned int)os->length) {
829 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
830 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
831 goto err;
832 }
833
834 if (memcmp(mval, os->data, mlen)) {
835 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
836 CMS_R_VERIFICATION_FAILURE);
837 r = 0;
838 } else
839 r = 1;
840 } else {
841 r = EVP_VerifyFinal(&mctx, si->signature->data,
842 si->signature->length, si->pkey);
843 if (r <= 0) {
844 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
845 CMS_R_VERIFICATION_FAILURE);
846 r = 0;
847 }
848 }
849
850err:
851 EVP_MD_CTX_cleanup(&mctx);
852 return r;
853}
854
855int
856CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
857{
858 unsigned char *smder = NULL;
859 int smderlen, r;
860
861 smderlen = i2d_X509_ALGORS(algs, &smder);
862 if (smderlen <= 0)
863 return 0;
864 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
865 V_ASN1_SEQUENCE, smder, smderlen);
866 free(smder);
867 return r;
868}
869
870int
871CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, int algnid, int keysize)
872{
873 X509_ALGOR *alg;
874 ASN1_INTEGER *key = NULL;
875
876 if (keysize > 0) {
877 key = ASN1_INTEGER_new();
878 if (!key || !ASN1_INTEGER_set(key, keysize))
879 return 0;
880 }
881 alg = X509_ALGOR_new();
882 if (!alg) {
883 if (key)
884 ASN1_INTEGER_free(key);
885 return 0;
886 }
887
888 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
889 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
890 if (!*algs)
891 *algs = sk_X509_ALGOR_new_null();
892 if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) {
893 X509_ALGOR_free(alg);
894 return 0;
895 }
896 return 1;
897}
898
899/* Check to see if a cipher exists and if so add S/MIME capabilities */
900
901static int
902cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
903{
904 if (EVP_get_cipherbynid(nid))
905 return CMS_add_simple_smimecap(sk, nid, arg);
906 return 1;
907}
908
909static int
910cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
911{
912 if (EVP_get_digestbynid(nid))
913 return CMS_add_simple_smimecap(sk, nid, arg);
914 return 1;
915}
916
917int
918CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
919{
920 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1) ||
921 !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1) ||
922 !cms_add_digest_smcap(smcap, NID_id_tc26_gost3411_2012_256, -1) ||
923 !cms_add_digest_smcap(smcap, NID_id_tc26_gost3411_2012_512, -1) ||
924 !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) ||
925 !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1) ||
926 !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1) ||
927 !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) ||
928 !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128) ||
929 !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64) ||
930 !cms_add_cipher_smcap(smcap, NID_des_cbc, -1) ||
931 !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))
932 return 0;
933 return 1;
934}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-07 20:07:28 +0000