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 * ====================================================================
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 DECLARE_ASN1_ITEM(CMS_SignedData)
69 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
71 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
72 CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
75 return cms->d.signedData;
78 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
80 if (cms->d.other == NULL) {
81 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
82 if (!cms->d.signedData) {
83 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE);
86 cms->d.signedData->version = 1;
87 cms->d.signedData->encapContentInfo->eContentType =
88 OBJ_nid2obj(NID_pkcs7_data);
89 cms->d.signedData->encapContentInfo->partial = 1;
90 ASN1_OBJECT_free(cms->contentType);
91 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
92 return cms->d.signedData;
94 return cms_get0_signed(cms);
97 /* Just initialize SignedData e.g. for certs only structure */
99 int CMS_SignedData_init(CMS_ContentInfo *cms)
101 if (cms_signed_data_init(cms))
107 /* Check structures and fixup version numbers (if necessary) */
109 static void cms_sd_set_version(CMS_SignedData *sd)
112 CMS_CertificateChoices *cch;
113 CMS_RevocationInfoChoice *rch;
116 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
117 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
118 if (cch->type == CMS_CERTCHOICE_OTHER) {
121 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
124 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
130 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
131 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
132 if (rch->type == CMS_REVCHOICE_OTHER) {
138 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
139 && (sd->version < 3))
142 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
143 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
144 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
149 } else if (si->version < 1)
158 /* Copy an existing messageDigest value */
160 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
162 STACK_OF(CMS_SignerInfo) *sinfos;
163 CMS_SignerInfo *sitmp;
165 sinfos = CMS_get0_SignerInfos(cms);
166 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
167 ASN1_OCTET_STRING *messageDigest;
168 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
171 if (CMS_signed_get_attr_count(sitmp) < 0)
173 if (OBJ_cmp(si->digestAlgorithm->algorithm,
174 sitmp->digestAlgorithm->algorithm))
176 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
178 (NID_pkcs9_messageDigest),
179 -3, V_ASN1_OCTET_STRING);
180 if (!messageDigest) {
181 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
182 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
186 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
193 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
197 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type)
200 case CMS_SIGNERINFO_ISSUER_SERIAL:
201 if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
205 case CMS_SIGNERINFO_KEYIDENTIFIER:
206 if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
211 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
220 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
221 ASN1_OCTET_STRING **keyid,
225 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
227 *issuer = sid->d.issuerAndSerialNumber->issuer;
229 *sno = sid->d.issuerAndSerialNumber->serialNumber;
230 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
232 *keyid = sid->d.subjectKeyIdentifier;
238 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
240 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
241 return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
242 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
243 return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
248 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
250 EVP_PKEY *pkey = si->pkey;
252 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
254 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
256 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
260 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE);
266 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
267 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
271 CMS_SignerInfo *si = NULL;
274 if (!X509_check_private_key(signer, pk)) {
275 CMSerr(CMS_F_CMS_ADD1_SIGNER,
276 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
279 sd = cms_signed_data_init(cms);
282 si = M_ASN1_new_of(CMS_SignerInfo);
285 X509_check_purpose(signer, -1, -1);
287 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
288 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
292 EVP_MD_CTX_init(&si->mctx);
295 if (flags & CMS_USE_KEYID) {
299 type = CMS_SIGNERINFO_KEYIDENTIFIER;
301 type = CMS_SIGNERINFO_ISSUER_SERIAL;
305 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
310 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
312 md = EVP_get_digestbynid(def_nid);
314 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
320 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
324 X509_ALGOR_set_md(si->digestAlgorithm, md);
326 /* See if digest is present in digestAlgorithms */
327 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
329 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
330 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
331 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
335 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
336 alg = X509_ALGOR_new();
339 X509_ALGOR_set_md(alg, md);
340 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
341 X509_ALGOR_free(alg);
346 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
348 if (!(flags & CMS_NOATTR)) {
350 * Initialialize signed attributes strutucture so other attributes
351 * such as signing time etc are added later even if we add none here.
353 if (!si->signedAttrs) {
354 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
355 if (!si->signedAttrs)
359 if (!(flags & CMS_NOSMIMECAP)) {
360 STACK_OF(X509_ALGOR) *smcap = NULL;
361 i = CMS_add_standard_smimecap(&smcap);
363 i = CMS_add_smimecap(si, smcap);
364 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
368 if (flags & CMS_REUSE_DIGEST) {
369 if (!cms_copy_messageDigest(cms, si))
371 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
372 !CMS_SignerInfo_sign(si))
377 if (!(flags & CMS_NOCERTS)) {
378 /* NB ignore -1 return for duplicate cert */
379 if (!CMS_add1_cert(cms, signer))
383 if (flags & CMS_KEY_PARAM) {
384 if (flags & CMS_NOATTR) {
385 si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL);
388 if (EVP_PKEY_sign_init(si->pctx) <= 0)
390 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
392 } else if (EVP_DigestSignInit(&si->mctx, &si->pctx, md, NULL, pk) <=
397 if (!sd->signerInfos)
398 sd->signerInfos = sk_CMS_SignerInfo_new_null();
399 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
405 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
408 M_ASN1_free_of(si, CMS_SignerInfo);
413 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
420 tt = X509_gmtime_adj(NULL, 0);
425 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
426 tt->type, tt, -1) <= 0)
437 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
443 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
448 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
453 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
456 sd = cms_get0_signed(cms);
459 return sd->signerInfos;
462 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
464 STACK_OF(X509) *signers = NULL;
465 STACK_OF(CMS_SignerInfo) *sinfos;
468 sinfos = CMS_get0_SignerInfos(cms);
469 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
470 si = sk_CMS_SignerInfo_value(sinfos, i);
473 signers = sk_X509_new_null();
477 if (!sk_X509_push(signers, si->signer)) {
478 sk_X509_free(signers);
486 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
489 CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
491 EVP_PKEY_free(si->pkey);
492 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)
581 EVP_PKEY_CTX *pctx = NULL;
582 EVP_MD_CTX_init(&mctx);
585 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
589 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
591 /* Set SignerInfo algortihm details if we used custom parametsr */
592 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
596 * If any signed attributes calculate and add messageDigest attribute
599 if (CMS_signed_get_attr_count(si) >= 0) {
601 cms->d.signedData->encapContentInfo->eContentType;
602 unsigned char md[EVP_MAX_MD_SIZE];
604 if (!EVP_DigestFinal_ex(&mctx, md, &mdlen))
606 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
607 V_ASN1_OCTET_STRING, md, mdlen))
609 /* Copy content type across */
610 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
611 V_ASN1_OBJECT, ctype, -1) <= 0)
613 if (!CMS_SignerInfo_sign(si))
615 } else if (si->pctx) {
618 unsigned char md[EVP_MAX_MD_SIZE];
621 if (!EVP_DigestFinal_ex(&mctx, md, &mdlen))
623 siglen = EVP_PKEY_size(si->pkey);
624 sig = OPENSSL_malloc(siglen);
626 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
629 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
633 ASN1_STRING_set0(si->signature, sig, siglen);
637 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
639 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
642 if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) {
643 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR);
647 ASN1_STRING_set0(si->signature, sig, siglen);
653 EVP_MD_CTX_cleanup(&mctx);
655 EVP_PKEY_CTX_free(pctx);
660 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
662 STACK_OF(CMS_SignerInfo) *sinfos;
665 sinfos = CMS_get0_SignerInfos(cms);
666 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
667 si = sk_CMS_SignerInfo_value(sinfos, i);
668 if (!cms_SignerInfo_content_sign(cms, si, chain))
671 cms->d.signedData->encapContentInfo->partial = 0;
675 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
677 EVP_MD_CTX *mctx = &si->mctx;
679 unsigned char *abuf = NULL;
682 const EVP_MD *md = NULL;
684 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
688 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
689 if (!cms_add1_signingTime(si, NULL))
696 EVP_MD_CTX_init(mctx);
697 if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0)
701 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
702 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
703 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
707 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
708 ASN1_ITEM_rptr(CMS_Attributes_Sign));
711 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
713 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
716 abuf = OPENSSL_malloc(siglen);
719 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
722 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
723 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
724 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
728 EVP_MD_CTX_cleanup(mctx);
730 ASN1_STRING_set0(si->signature, abuf, siglen);
737 EVP_MD_CTX_cleanup(mctx);
742 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
744 EVP_MD_CTX *mctx = &si->mctx;
745 unsigned char *abuf = NULL;
747 const EVP_MD *md = NULL;
750 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
754 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
757 EVP_MD_CTX_init(mctx);
758 if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0)
761 if (!cms_sd_asn1_ctrl(si, 1))
764 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
765 ASN1_ITEM_rptr(CMS_Attributes_Verify));
768 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
774 r = EVP_DigestVerifyFinal(mctx,
775 si->signature->data, si->signature->length);
777 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
779 EVP_MD_CTX_cleanup(mctx);
783 /* Create a chain of digest BIOs from a CMS ContentInfo */
785 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
790 sd = cms_get0_signed(cms);
793 if (cms->d.signedData->encapContentInfo->partial)
794 cms_sd_set_version(sd);
795 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
796 X509_ALGOR *digestAlgorithm;
798 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
799 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
803 BIO_push(chain, mdbio);
813 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
815 ASN1_OCTET_STRING *os = NULL;
817 EVP_PKEY_CTX *pkctx = NULL;
819 unsigned char mval[EVP_MAX_MD_SIZE];
821 EVP_MD_CTX_init(&mctx);
822 /* If we have any signed attributes look for messageDigest value */
823 if (CMS_signed_get_attr_count(si) >= 0) {
824 os = CMS_signed_get0_data_by_OBJ(si,
825 OBJ_nid2obj(NID_pkcs9_messageDigest),
826 -3, V_ASN1_OCTET_STRING);
828 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
829 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
834 if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm))
837 if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) {
838 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
839 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
843 /* If messageDigest found compare it */
846 if (mlen != (unsigned int)os->length) {
847 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
848 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
852 if (memcmp(mval, os->data, mlen)) {
853 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
854 CMS_R_VERIFICATION_FAILURE);
859 const EVP_MD *md = EVP_MD_CTX_md(&mctx);
860 pkctx = EVP_PKEY_CTX_new(si->pkey, NULL);
861 if (EVP_PKEY_verify_init(pkctx) <= 0)
863 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
866 if (!cms_sd_asn1_ctrl(si, 1))
868 r = EVP_PKEY_verify(pkctx, si->signature->data,
869 si->signature->length, mval, mlen);
871 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
872 CMS_R_VERIFICATION_FAILURE);
879 EVP_PKEY_CTX_free(pkctx);
880 EVP_MD_CTX_cleanup(&mctx);
885 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
887 unsigned char *smder = NULL;
889 smderlen = i2d_X509_ALGORS(algs, &smder);
892 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
893 V_ASN1_SEQUENCE, smder, smderlen);
898 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
899 int algnid, int keysize)
902 ASN1_INTEGER *key = NULL;
904 key = ASN1_INTEGER_new();
905 if (!key || !ASN1_INTEGER_set(key, keysize))
908 alg = X509_ALGOR_new();
911 ASN1_INTEGER_free(key);
915 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
916 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
918 *algs = sk_X509_ALGOR_new_null();
919 if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) {
920 X509_ALGOR_free(alg);
926 /* Check to see if a cipher exists and if so add S/MIME capabilities */
928 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
930 if (EVP_get_cipherbynid(nid))
931 return CMS_add_simple_smimecap(sk, nid, arg);
935 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
937 if (EVP_get_digestbynid(nid))
938 return CMS_add_simple_smimecap(sk, nid, arg);
942 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
944 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
945 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
946 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
947 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
948 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
949 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
950 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
951 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
952 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
953 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))