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 EVP_MD_CTX_init(&si->mctx);
293 if (flags & CMS_USE_KEYID) {
297 type = CMS_SIGNERINFO_KEYIDENTIFIER;
299 type = CMS_SIGNERINFO_ISSUER_SERIAL;
303 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
308 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
310 md = EVP_get_digestbynid(def_nid);
312 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
318 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
322 X509_ALGOR_set_md(si->digestAlgorithm, md);
324 /* See if digest is present in digestAlgorithms */
325 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
327 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
328 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
329 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
333 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
334 alg = X509_ALGOR_new();
337 X509_ALGOR_set_md(alg, md);
338 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
339 X509_ALGOR_free(alg);
344 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
346 if (!(flags & CMS_NOATTR)) {
348 * Initialialize signed attributes strutucture so other attributes
349 * such as signing time etc are added later even if we add none here.
351 if (!si->signedAttrs) {
352 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
353 if (!si->signedAttrs)
357 if (!(flags & CMS_NOSMIMECAP)) {
358 STACK_OF(X509_ALGOR) *smcap = NULL;
359 i = CMS_add_standard_smimecap(&smcap);
361 i = CMS_add_smimecap(si, smcap);
362 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
366 if (flags & CMS_REUSE_DIGEST) {
367 if (!cms_copy_messageDigest(cms, si))
369 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
370 !CMS_SignerInfo_sign(si))
375 if (!(flags & CMS_NOCERTS)) {
376 /* NB ignore -1 return for duplicate cert */
377 if (!CMS_add1_cert(cms, signer))
381 if (flags & CMS_KEY_PARAM) {
382 if (flags & CMS_NOATTR) {
383 si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL);
386 if (EVP_PKEY_sign_init(si->pctx) <= 0)
388 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
390 } else if (EVP_DigestSignInit(&si->mctx, &si->pctx, md, NULL, pk) <=
395 if (!sd->signerInfos)
396 sd->signerInfos = sk_CMS_SignerInfo_new_null();
397 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
403 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
405 M_ASN1_free_of(si, CMS_SignerInfo);
410 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
417 tt = X509_gmtime_adj(NULL, 0);
422 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
423 tt->type, tt, -1) <= 0)
434 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
440 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
445 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
450 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
453 sd = cms_get0_signed(cms);
456 return sd->signerInfos;
459 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
461 STACK_OF(X509) *signers = NULL;
462 STACK_OF(CMS_SignerInfo) *sinfos;
465 sinfos = CMS_get0_SignerInfos(cms);
466 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
467 si = sk_CMS_SignerInfo_value(sinfos, i);
470 signers = sk_X509_new_null();
474 if (!sk_X509_push(signers, si->signer)) {
475 sk_X509_free(signers);
483 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
487 EVP_PKEY_free(si->pkey);
488 si->pkey = X509_get_pubkey(signer);
490 X509_free(si->signer);
494 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
495 ASN1_OCTET_STRING **keyid,
496 X509_NAME **issuer, ASN1_INTEGER **sno)
498 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
501 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
503 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
506 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
511 CMS_CertificateChoices *cch;
512 STACK_OF(CMS_CertificateChoices) *certs;
516 sd = cms_get0_signed(cms);
519 certs = sd->certificates;
520 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
521 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
525 for (j = 0; j < sk_X509_num(scerts); j++) {
526 x = sk_X509_value(scerts, j);
527 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
528 CMS_SignerInfo_set1_signer_cert(si, x);
534 if (si->signer || (flags & CMS_NOINTERN))
537 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
538 cch = sk_CMS_CertificateChoices_value(certs, j);
541 x = cch->d.certificate;
542 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
543 CMS_SignerInfo_set1_signer_cert(si, x);
552 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
553 X509 **signer, X509_ALGOR **pdig,
559 *signer = si->signer;
561 *pdig = si->digestAlgorithm;
563 *psig = si->signatureAlgorithm;
566 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
568 return si->signature;
571 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
572 CMS_SignerInfo *si, BIO *chain)
576 EVP_PKEY_CTX *pctx = NULL;
577 EVP_MD_CTX_init(&mctx);
580 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
584 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
586 /* Set SignerInfo algortihm details if we used custom parametsr */
587 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
591 * If any signed attributes calculate and add messageDigest attribute
594 if (CMS_signed_get_attr_count(si) >= 0) {
596 cms->d.signedData->encapContentInfo->eContentType;
597 unsigned char md[EVP_MAX_MD_SIZE];
599 if (!EVP_DigestFinal_ex(&mctx, md, &mdlen))
601 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
602 V_ASN1_OCTET_STRING, md, mdlen))
604 /* Copy content type across */
605 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
606 V_ASN1_OBJECT, ctype, -1) <= 0)
608 if (!CMS_SignerInfo_sign(si))
610 } else if (si->pctx) {
613 unsigned char md[EVP_MAX_MD_SIZE];
616 if (!EVP_DigestFinal_ex(&mctx, md, &mdlen))
618 siglen = EVP_PKEY_size(si->pkey);
619 sig = OPENSSL_malloc(siglen);
621 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
624 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
628 ASN1_STRING_set0(si->signature, sig, siglen);
632 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
634 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
637 if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) {
638 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR);
642 ASN1_STRING_set0(si->signature, sig, siglen);
648 EVP_MD_CTX_cleanup(&mctx);
649 EVP_PKEY_CTX_free(pctx);
654 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
656 STACK_OF(CMS_SignerInfo) *sinfos;
659 sinfos = CMS_get0_SignerInfos(cms);
660 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
661 si = sk_CMS_SignerInfo_value(sinfos, i);
662 if (!cms_SignerInfo_content_sign(cms, si, chain))
665 cms->d.signedData->encapContentInfo->partial = 0;
669 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
671 EVP_MD_CTX *mctx = &si->mctx;
673 unsigned char *abuf = NULL;
676 const EVP_MD *md = NULL;
678 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
682 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
683 if (!cms_add1_signingTime(si, NULL))
690 EVP_MD_CTX_init(mctx);
691 if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0)
695 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
696 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
697 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
701 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
702 ASN1_ITEM_rptr(CMS_Attributes_Sign));
705 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
707 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
710 abuf = OPENSSL_malloc(siglen);
713 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
716 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
717 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
718 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
722 EVP_MD_CTX_cleanup(mctx);
724 ASN1_STRING_set0(si->signature, abuf, siglen);
730 EVP_MD_CTX_cleanup(mctx);
735 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
737 EVP_MD_CTX *mctx = &si->mctx;
738 unsigned char *abuf = NULL;
740 const EVP_MD *md = NULL;
743 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
747 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
750 EVP_MD_CTX_init(mctx);
751 if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0)
754 if (!cms_sd_asn1_ctrl(si, 1))
757 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
758 ASN1_ITEM_rptr(CMS_Attributes_Verify));
761 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
767 r = EVP_DigestVerifyFinal(mctx,
768 si->signature->data, si->signature->length);
770 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
772 EVP_MD_CTX_cleanup(mctx);
776 /* Create a chain of digest BIOs from a CMS ContentInfo */
778 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
783 sd = cms_get0_signed(cms);
786 if (cms->d.signedData->encapContentInfo->partial)
787 cms_sd_set_version(sd);
788 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
789 X509_ALGOR *digestAlgorithm;
791 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
792 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
796 BIO_push(chain, mdbio);
806 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
808 ASN1_OCTET_STRING *os = NULL;
810 EVP_PKEY_CTX *pkctx = NULL;
812 unsigned char mval[EVP_MAX_MD_SIZE];
814 EVP_MD_CTX_init(&mctx);
815 /* If we have any signed attributes look for messageDigest value */
816 if (CMS_signed_get_attr_count(si) >= 0) {
817 os = CMS_signed_get0_data_by_OBJ(si,
818 OBJ_nid2obj(NID_pkcs9_messageDigest),
819 -3, V_ASN1_OCTET_STRING);
821 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
822 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
827 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
830 if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) {
831 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
832 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
836 /* If messageDigest found compare it */
839 if (mlen != (unsigned int)os->length) {
840 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
841 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
845 if (memcmp(mval, os->data, mlen)) {
846 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
847 CMS_R_VERIFICATION_FAILURE);
852 const EVP_MD *md = EVP_MD_CTX_md(&mctx);
853 pkctx = EVP_PKEY_CTX_new(si->pkey, NULL);
854 if (EVP_PKEY_verify_init(pkctx) <= 0)
856 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
859 if (!cms_sd_asn1_ctrl(si, 1))
861 r = EVP_PKEY_verify(pkctx, si->signature->data,
862 si->signature->length, mval, mlen);
864 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
865 CMS_R_VERIFICATION_FAILURE);
871 EVP_PKEY_CTX_free(pkctx);
872 EVP_MD_CTX_cleanup(&mctx);
877 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
879 unsigned char *smder = NULL;
881 smderlen = i2d_X509_ALGORS(algs, &smder);
884 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
885 V_ASN1_SEQUENCE, smder, smderlen);
890 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
891 int algnid, int keysize)
894 ASN1_INTEGER *key = NULL;
896 key = ASN1_INTEGER_new();
897 if (!key || !ASN1_INTEGER_set(key, keysize))
900 alg = X509_ALGOR_new();
902 ASN1_INTEGER_free(key);
906 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
907 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
909 *algs = sk_X509_ALGOR_new_null();
910 if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) {
911 X509_ALGOR_free(alg);
917 /* Check to see if a cipher exists and if so add S/MIME capabilities */
919 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
921 if (EVP_get_cipherbynid(nid))
922 return CMS_add_simple_smimecap(sk, nid, arg);
926 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
928 if (EVP_get_digestbynid(nid))
929 return CMS_add_simple_smimecap(sk, nid, arg);
933 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
935 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
936 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
937 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
938 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
939 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
940 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
941 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
942 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
943 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
944 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
945 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
946 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))