1 /* crypto/cms/cms_sd.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
55 #include "internal/cryptlib.h"
56 #include <openssl/asn1t.h>
57 #include <openssl/pem.h>
58 #include <openssl/x509.h>
59 #include <openssl/x509v3.h>
60 #include <openssl/err.h>
61 #include <openssl/cms.h>
63 #include "internal/asn1_int.h"
65 /* CMS SignedData Utilities */
67 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
69 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
70 CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
73 return cms->d.signedData;
76 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
78 if (cms->d.other == NULL) {
79 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
80 if (!cms->d.signedData) {
81 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE);
84 cms->d.signedData->version = 1;
85 cms->d.signedData->encapContentInfo->eContentType =
86 OBJ_nid2obj(NID_pkcs7_data);
87 cms->d.signedData->encapContentInfo->partial = 1;
88 ASN1_OBJECT_free(cms->contentType);
89 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
90 return cms->d.signedData;
92 return cms_get0_signed(cms);
95 /* Just initialize SignedData e.g. for certs only structure */
97 int CMS_SignedData_init(CMS_ContentInfo *cms)
99 if (cms_signed_data_init(cms))
105 /* Check structures and fixup version numbers (if necessary) */
107 static void cms_sd_set_version(CMS_SignedData *sd)
110 CMS_CertificateChoices *cch;
111 CMS_RevocationInfoChoice *rch;
114 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
115 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
116 if (cch->type == CMS_CERTCHOICE_OTHER) {
119 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
122 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
128 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
129 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
130 if (rch->type == CMS_REVCHOICE_OTHER) {
136 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
137 && (sd->version < 3))
140 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
141 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
142 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
147 } else if (si->version < 1)
156 /* Copy an existing messageDigest value */
158 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
160 STACK_OF(CMS_SignerInfo) *sinfos;
161 CMS_SignerInfo *sitmp;
163 sinfos = CMS_get0_SignerInfos(cms);
164 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
165 ASN1_OCTET_STRING *messageDigest;
166 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
169 if (CMS_signed_get_attr_count(sitmp) < 0)
171 if (OBJ_cmp(si->digestAlgorithm->algorithm,
172 sitmp->digestAlgorithm->algorithm))
174 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
176 (NID_pkcs9_messageDigest),
177 -3, V_ASN1_OCTET_STRING);
178 if (!messageDigest) {
179 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
180 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
184 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
191 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
195 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type)
198 case CMS_SIGNERINFO_ISSUER_SERIAL:
199 if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
203 case CMS_SIGNERINFO_KEYIDENTIFIER:
204 if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
209 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
218 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
219 ASN1_OCTET_STRING **keyid,
223 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
225 *issuer = sid->d.issuerAndSerialNumber->issuer;
227 *sno = sid->d.issuerAndSerialNumber->serialNumber;
228 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
230 *keyid = sid->d.subjectKeyIdentifier;
236 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
238 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
239 return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
240 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
241 return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
246 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
248 EVP_PKEY *pkey = si->pkey;
250 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
252 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
254 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
258 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE);
264 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
265 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
269 CMS_SignerInfo *si = NULL;
272 if (!X509_check_private_key(signer, pk)) {
273 CMSerr(CMS_F_CMS_ADD1_SIGNER,
274 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
277 sd = cms_signed_data_init(cms);
280 si = M_ASN1_new_of(CMS_SignerInfo);
283 X509_check_purpose(signer, -1, -1);
285 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
290 si->mctx = EVP_MD_CTX_create();
293 if (si->mctx == NULL) {
294 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
298 if (flags & CMS_USE_KEYID) {
302 type = CMS_SIGNERINFO_KEYIDENTIFIER;
304 type = CMS_SIGNERINFO_ISSUER_SERIAL;
308 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
313 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
315 md = EVP_get_digestbynid(def_nid);
317 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
323 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
327 X509_ALGOR_set_md(si->digestAlgorithm, md);
329 /* See if digest is present in digestAlgorithms */
330 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
332 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
333 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
334 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
338 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
339 alg = X509_ALGOR_new();
342 X509_ALGOR_set_md(alg, md);
343 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
344 X509_ALGOR_free(alg);
349 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
351 if (!(flags & CMS_NOATTR)) {
353 * Initialialize signed attributes strutucture so other attributes
354 * such as signing time etc are added later even if we add none here.
356 if (!si->signedAttrs) {
357 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
358 if (!si->signedAttrs)
362 if (!(flags & CMS_NOSMIMECAP)) {
363 STACK_OF(X509_ALGOR) *smcap = NULL;
364 i = CMS_add_standard_smimecap(&smcap);
366 i = CMS_add_smimecap(si, smcap);
367 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
371 if (flags & CMS_REUSE_DIGEST) {
372 if (!cms_copy_messageDigest(cms, si))
374 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
375 !CMS_SignerInfo_sign(si))
380 if (!(flags & CMS_NOCERTS)) {
381 /* NB ignore -1 return for duplicate cert */
382 if (!CMS_add1_cert(cms, signer))
386 if (flags & CMS_KEY_PARAM) {
387 if (flags & CMS_NOATTR) {
388 si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL);
389 if (si->pctx == NULL)
391 if (EVP_PKEY_sign_init(si->pctx) <= 0)
393 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
395 } else if (EVP_DigestSignInit(si->mctx, &si->pctx, md, NULL, pk) <=
400 if (!sd->signerInfos)
401 sd->signerInfos = sk_CMS_SignerInfo_new_null();
402 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
408 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
410 M_ASN1_free_of(si, CMS_SignerInfo);
415 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
422 tt = X509_gmtime_adj(NULL, 0);
427 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
428 tt->type, tt, -1) <= 0)
439 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
445 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
450 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
455 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
458 sd = cms_get0_signed(cms);
461 return sd->signerInfos;
464 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
466 STACK_OF(X509) *signers = NULL;
467 STACK_OF(CMS_SignerInfo) *sinfos;
470 sinfos = CMS_get0_SignerInfos(cms);
471 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
472 si = sk_CMS_SignerInfo_value(sinfos, i);
475 signers = sk_X509_new_null();
479 if (!sk_X509_push(signers, si->signer)) {
480 sk_X509_free(signers);
488 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
492 EVP_PKEY_free(si->pkey);
493 si->pkey = X509_get_pubkey(signer);
495 X509_free(si->signer);
499 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
500 ASN1_OCTET_STRING **keyid,
501 X509_NAME **issuer, ASN1_INTEGER **sno)
503 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
506 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
508 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
511 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
516 CMS_CertificateChoices *cch;
517 STACK_OF(CMS_CertificateChoices) *certs;
521 sd = cms_get0_signed(cms);
524 certs = sd->certificates;
525 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
526 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
530 for (j = 0; j < sk_X509_num(scerts); j++) {
531 x = sk_X509_value(scerts, j);
532 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
533 CMS_SignerInfo_set1_signer_cert(si, x);
539 if (si->signer || (flags & CMS_NOINTERN))
542 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
543 cch = sk_CMS_CertificateChoices_value(certs, j);
546 x = cch->d.certificate;
547 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
548 CMS_SignerInfo_set1_signer_cert(si, x);
557 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
558 X509 **signer, X509_ALGOR **pdig,
564 *signer = si->signer;
566 *pdig = si->digestAlgorithm;
568 *psig = si->signatureAlgorithm;
571 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
573 return si->signature;
576 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
577 CMS_SignerInfo *si, BIO *chain)
579 EVP_MD_CTX *mctx = EVP_MD_CTX_create();
581 EVP_PKEY_CTX *pctx = NULL;
584 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
589 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
593 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
595 /* Set SignerInfo algortihm details if we used custom parametsr */
596 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
600 * If any signed attributes calculate and add messageDigest attribute
603 if (CMS_signed_get_attr_count(si) >= 0) {
605 cms->d.signedData->encapContentInfo->eContentType;
606 unsigned char md[EVP_MAX_MD_SIZE];
608 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
610 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
611 V_ASN1_OCTET_STRING, md, mdlen))
613 /* Copy content type across */
614 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
615 V_ASN1_OBJECT, ctype, -1) <= 0)
617 if (!CMS_SignerInfo_sign(si))
619 } else if (si->pctx) {
622 unsigned char md[EVP_MAX_MD_SIZE];
625 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
627 siglen = EVP_PKEY_size(si->pkey);
628 sig = OPENSSL_malloc(siglen);
630 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
633 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
637 ASN1_STRING_set0(si->signature, sig, siglen);
641 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
643 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
646 if (!EVP_SignFinal(mctx, sig, &siglen, si->pkey)) {
647 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR);
651 ASN1_STRING_set0(si->signature, sig, siglen);
657 EVP_MD_CTX_destroy(mctx);
658 EVP_PKEY_CTX_free(pctx);
663 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
665 STACK_OF(CMS_SignerInfo) *sinfos;
668 sinfos = CMS_get0_SignerInfos(cms);
669 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
670 si = sk_CMS_SignerInfo_value(sinfos, i);
671 if (!cms_SignerInfo_content_sign(cms, si, chain))
674 cms->d.signedData->encapContentInfo->partial = 0;
678 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
680 EVP_MD_CTX *mctx = si->mctx;
682 unsigned char *abuf = NULL;
685 const EVP_MD *md = NULL;
687 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
691 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
692 if (!cms_add1_signingTime(si, NULL))
699 EVP_MD_CTX_init(mctx);
700 if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0)
704 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
705 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
706 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
710 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
711 ASN1_ITEM_rptr(CMS_Attributes_Sign));
714 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
716 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
719 abuf = OPENSSL_malloc(siglen);
722 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
725 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
726 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
727 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
731 EVP_MD_CTX_init(mctx);
733 ASN1_STRING_set0(si->signature, abuf, siglen);
739 EVP_MD_CTX_init(mctx);
744 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
746 EVP_MD_CTX *mctx = NULL;
747 unsigned char *abuf = NULL;
749 const EVP_MD *md = NULL;
752 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
756 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
759 if (si->mctx == NULL)
760 si->mctx = EVP_MD_CTX_create();
762 if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0)
765 if (!cms_sd_asn1_ctrl(si, 1))
768 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
769 ASN1_ITEM_rptr(CMS_Attributes_Verify));
772 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
778 r = EVP_DigestVerifyFinal(mctx,
779 si->signature->data, si->signature->length);
781 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
783 EVP_MD_CTX_init(mctx);
787 /* Create a chain of digest BIOs from a CMS ContentInfo */
789 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
794 sd = cms_get0_signed(cms);
797 if (cms->d.signedData->encapContentInfo->partial)
798 cms_sd_set_version(sd);
799 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
800 X509_ALGOR *digestAlgorithm;
802 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
803 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
807 BIO_push(chain, mdbio);
817 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
819 ASN1_OCTET_STRING *os = NULL;
820 EVP_MD_CTX *mctx = EVP_MD_CTX_create();
821 EVP_PKEY_CTX *pkctx = NULL;
823 unsigned char mval[EVP_MAX_MD_SIZE];
827 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, ERR_R_MALLOC_FAILURE);
830 /* If we have any signed attributes look for messageDigest value */
831 if (CMS_signed_get_attr_count(si) >= 0) {
832 os = CMS_signed_get0_data_by_OBJ(si,
833 OBJ_nid2obj(NID_pkcs9_messageDigest),
834 -3, V_ASN1_OCTET_STRING);
836 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
837 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
842 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
845 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
846 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
847 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
851 /* If messageDigest found compare it */
854 if (mlen != (unsigned int)os->length) {
855 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
856 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
860 if (memcmp(mval, os->data, mlen)) {
861 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
862 CMS_R_VERIFICATION_FAILURE);
867 const EVP_MD *md = EVP_MD_CTX_md(mctx);
868 pkctx = EVP_PKEY_CTX_new(si->pkey, NULL);
871 if (EVP_PKEY_verify_init(pkctx) <= 0)
873 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
876 if (!cms_sd_asn1_ctrl(si, 1))
878 r = EVP_PKEY_verify(pkctx, si->signature->data,
879 si->signature->length, mval, mlen);
881 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
882 CMS_R_VERIFICATION_FAILURE);
888 EVP_PKEY_CTX_free(pkctx);
889 EVP_MD_CTX_destroy(mctx);
894 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
896 unsigned char *smder = NULL;
898 smderlen = i2d_X509_ALGORS(algs, &smder);
901 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
902 V_ASN1_SEQUENCE, smder, smderlen);
907 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
908 int algnid, int keysize)
911 ASN1_INTEGER *key = NULL;
913 key = ASN1_INTEGER_new();
914 if (key == NULL || !ASN1_INTEGER_set(key, keysize))
917 alg = X509_ALGOR_new();
919 ASN1_INTEGER_free(key);
923 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
924 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
926 *algs = sk_X509_ALGOR_new_null();
927 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
928 X509_ALGOR_free(alg);
934 /* Check to see if a cipher exists and if so add S/MIME capabilities */
936 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
938 if (EVP_get_cipherbynid(nid))
939 return CMS_add_simple_smimecap(sk, nid, arg);
943 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
945 if (EVP_get_digestbynid(nid))
946 return CMS_add_simple_smimecap(sk, nid, arg);
950 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
952 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
953 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
954 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
955 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
956 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
957 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
958 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
959 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
960 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
961 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
962 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
963 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))