2 * Copyright 2008-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "internal/cryptlib.h"
11 #include <openssl/asn1t.h>
12 #include <openssl/pem.h>
13 #include <openssl/x509.h>
14 #include <openssl/x509v3.h>
15 #include <openssl/err.h>
16 #include <openssl/cms.h>
17 #include <openssl/ess.h>
18 #include "cms_local.h"
19 #include "crypto/asn1.h"
20 #include "crypto/evp.h"
21 #include "crypto/cms.h"
22 #include "crypto/ess.h"
23 #include "crypto/x509.h" /* for X509_add_cert_new() */
25 DEFINE_STACK_OF(CMS_RevocationInfoChoice)
26 DEFINE_STACK_OF(CMS_SignerInfo)
28 /* CMS SignedData Utilities */
30 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
32 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
33 CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
36 return cms->d.signedData;
39 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
41 if (cms->d.other == NULL) {
42 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
43 if (!cms->d.signedData) {
44 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE);
47 cms->d.signedData->version = 1;
48 cms->d.signedData->encapContentInfo->eContentType =
49 OBJ_nid2obj(NID_pkcs7_data);
50 cms->d.signedData->encapContentInfo->partial = 1;
51 ASN1_OBJECT_free(cms->contentType);
52 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
53 return cms->d.signedData;
55 return cms_get0_signed(cms);
58 /* Just initialise SignedData e.g. for certs only structure */
60 int CMS_SignedData_init(CMS_ContentInfo *cms)
62 if (cms_signed_data_init(cms))
69 /* Check structures and fixup version numbers (if necessary) */
71 static void cms_sd_set_version(CMS_SignedData *sd)
74 CMS_CertificateChoices *cch;
75 CMS_RevocationInfoChoice *rch;
78 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
79 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
80 if (cch->type == CMS_CERTCHOICE_OTHER) {
83 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
86 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
92 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
93 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
94 if (rch->type == CMS_REVCHOICE_OTHER) {
100 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
101 && (sd->version < 3))
104 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
105 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
106 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
111 } else if (si->version < 1)
121 * RFC 5652 Section 11.1 Content Type
122 * The content-type attribute within signed-data MUST
123 * 1) be present if there are signed attributes
124 * 2) match the content type in the signed-data,
125 * 3) be a signed attribute.
126 * 4) not have more than one copy of the attribute.
128 * Note that since the CMS_SignerInfo_sign() always adds the "signing time"
129 * attribute, the content type attribute MUST be added also.
130 * Assumptions: This assumes that the attribute does not already exist.
132 static int cms_set_si_contentType_attr(CMS_ContentInfo *cms, CMS_SignerInfo *si)
134 ASN1_OBJECT *ctype = cms->d.signedData->encapContentInfo->eContentType;
136 /* Add the contentType attribute */
137 return CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
138 V_ASN1_OBJECT, ctype, -1) > 0;
141 /* Copy an existing messageDigest value */
143 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
145 STACK_OF(CMS_SignerInfo) *sinfos;
146 CMS_SignerInfo *sitmp;
149 sinfos = CMS_get0_SignerInfos(cms);
150 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
151 ASN1_OCTET_STRING *messageDigest;
153 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
156 if (CMS_signed_get_attr_count(sitmp) < 0)
158 if (OBJ_cmp(si->digestAlgorithm->algorithm,
159 sitmp->digestAlgorithm->algorithm))
161 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
163 (NID_pkcs9_messageDigest),
164 -3, V_ASN1_OCTET_STRING);
165 if (!messageDigest) {
166 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
167 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
171 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
178 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
182 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type,
186 case CMS_SIGNERINFO_ISSUER_SERIAL:
187 if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
191 case CMS_SIGNERINFO_KEYIDENTIFIER:
192 if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
197 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
206 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
207 ASN1_OCTET_STRING **keyid,
211 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
213 *issuer = sid->d.issuerAndSerialNumber->issuer;
215 *sno = sid->d.issuerAndSerialNumber->serialNumber;
216 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
218 *keyid = sid->d.subjectKeyIdentifier;
224 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
226 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
227 return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
228 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
229 return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
234 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
236 EVP_PKEY *pkey = si->pkey;
239 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
241 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
243 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
247 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE);
253 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
254 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
258 CMS_SignerInfo *si = NULL;
261 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
263 if (!X509_check_private_key(signer, pk)) {
264 CMSerr(CMS_F_CMS_ADD1_SIGNER,
265 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
268 sd = cms_signed_data_init(cms);
271 si = M_ASN1_new_of(CMS_SignerInfo);
274 /* Call for side-effect of computing hash and caching extensions */
275 X509_check_purpose(signer, -1, -1);
283 si->mctx = EVP_MD_CTX_new();
286 if (si->mctx == NULL) {
287 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
291 if (flags & CMS_USE_KEYID) {
295 type = CMS_SIGNERINFO_KEYIDENTIFIER;
297 type = CMS_SIGNERINFO_ISSUER_SERIAL;
301 if (!cms_set1_SignerIdentifier(si->sid, signer, type, ctx))
306 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
308 md = EVP_get_digestbynid(def_nid);
310 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
316 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
321 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
325 X509_ALGOR_set_md(si->digestAlgorithm, md);
327 /* See if digest is present in digestAlgorithms */
328 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
329 const ASN1_OBJECT *aoid;
330 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
331 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
332 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
336 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
337 alg = X509_ALGOR_new();
340 X509_ALGOR_set_md(alg, md);
341 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
342 X509_ALGOR_free(alg);
347 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
349 if (!(flags & CMS_NOATTR)) {
351 * Initialize signed attributes structure so other attributes
352 * such as signing time etc are added later even if we add none here.
354 if (!si->signedAttrs) {
355 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
356 if (!si->signedAttrs)
360 if (!(flags & CMS_NOSMIMECAP)) {
361 STACK_OF(X509_ALGOR) *smcap = NULL;
362 i = CMS_add_standard_smimecap(&smcap);
364 i = CMS_add_smimecap(si, smcap);
365 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
369 if (flags & CMS_CADES) {
370 ESS_SIGNING_CERT *sc = NULL;
371 ESS_SIGNING_CERT_V2 *sc2 = NULL;
374 if (md == EVP_sha1() || md == NULL) {
375 if ((sc = ESS_SIGNING_CERT_new_init(signer,
378 add_sc = cms_add1_signing_cert(si, sc);
379 ESS_SIGNING_CERT_free(sc);
381 if ((sc2 = ESS_SIGNING_CERT_V2_new_init(md, signer,
384 add_sc = cms_add1_signing_cert_v2(si, sc2);
385 ESS_SIGNING_CERT_V2_free(sc2);
390 if (flags & CMS_REUSE_DIGEST) {
391 if (!cms_copy_messageDigest(cms, si))
393 if (!cms_set_si_contentType_attr(cms, si))
395 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
396 !CMS_SignerInfo_sign(si))
401 if (!(flags & CMS_NOCERTS)) {
402 /* NB ignore -1 return for duplicate cert */
403 if (!CMS_add1_cert(cms, signer))
407 if (flags & CMS_KEY_PARAM) {
408 if (flags & CMS_NOATTR) {
409 si->pctx = EVP_PKEY_CTX_new_from_pkey(ctx->libctx, si->pkey,
411 if (si->pctx == NULL)
413 if (EVP_PKEY_sign_init(si->pctx) <= 0)
415 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
417 } else if (EVP_DigestSignInit_with_libctx(si->mctx, &si->pctx,
419 ctx->libctx, ctx->propq,
425 if (!sd->signerInfos)
426 sd->signerInfos = sk_CMS_SignerInfo_new_null();
427 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
433 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
435 M_ASN1_free_of(si, CMS_SignerInfo);
440 void cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms)
444 STACK_OF(CMS_SignerInfo) *sinfos = CMS_get0_SignerInfos(cms);
445 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
447 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
448 si = sk_CMS_SignerInfo_value(sinfos, i);
454 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
462 tt = X509_gmtime_adj(NULL, 0);
467 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
468 tt->type, tt, -1) <= 0)
477 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
483 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
488 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
493 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
495 CMS_SignedData *sd = cms_get0_signed(cms);
497 return sd != NULL ? sd->signerInfos : NULL;
500 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
502 STACK_OF(X509) *signers = NULL;
503 STACK_OF(CMS_SignerInfo) *sinfos;
507 sinfos = CMS_get0_SignerInfos(cms);
508 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
509 si = sk_CMS_SignerInfo_value(sinfos, i);
510 if (si->signer != NULL) {
511 if (!X509_add_cert_new(&signers, si->signer,
512 X509_ADD_FLAG_DEFAULT)) {
513 sk_X509_free(signers);
521 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
523 if (signer != NULL) {
525 EVP_PKEY_free(si->pkey);
526 si->pkey = X509_get_pubkey(signer);
528 X509_free(si->signer);
532 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
533 ASN1_OCTET_STRING **keyid,
534 X509_NAME **issuer, ASN1_INTEGER **sno)
536 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
539 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
541 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
544 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
549 CMS_CertificateChoices *cch;
550 STACK_OF(CMS_CertificateChoices) *certs;
555 sd = cms_get0_signed(cms);
558 certs = sd->certificates;
559 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
560 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
561 if (si->signer != NULL)
564 for (j = 0; j < sk_X509_num(scerts); j++) {
565 x = sk_X509_value(scerts, j);
566 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
567 CMS_SignerInfo_set1_signer_cert(si, x);
573 if (si->signer != NULL || (flags & CMS_NOINTERN))
576 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
577 cch = sk_CMS_CertificateChoices_value(certs, j);
580 x = cch->d.certificate;
581 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
582 CMS_SignerInfo_set1_signer_cert(si, x);
591 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
592 X509 **signer, X509_ALGOR **pdig,
598 *signer = si->signer;
600 *pdig = si->digestAlgorithm;
602 *psig = si->signatureAlgorithm;
605 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
607 return si->signature;
610 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
611 CMS_SignerInfo *si, BIO *chain)
613 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
615 EVP_PKEY_CTX *pctx = NULL;
616 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
619 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
623 if (si->pkey == NULL) {
624 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
628 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
630 /* Set SignerInfo algorithm details if we used custom parameter */
631 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
635 * If any signed attributes calculate and add messageDigest attribute
638 if (CMS_signed_get_attr_count(si) >= 0) {
639 unsigned char md[EVP_MAX_MD_SIZE];
642 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
644 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
645 V_ASN1_OCTET_STRING, md, mdlen))
647 /* Copy content type across */
648 if (!cms_set_si_contentType_attr(cms, si))
651 if (!CMS_SignerInfo_sign(si))
653 } else if (si->pctx) {
656 unsigned char md[EVP_MAX_MD_SIZE];
660 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
662 siglen = EVP_PKEY_size(si->pkey);
663 sig = OPENSSL_malloc(siglen);
665 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
668 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
672 ASN1_STRING_set0(si->signature, sig, siglen);
677 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
679 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
682 if (!EVP_SignFinal_with_libctx(mctx, sig, &siglen, si->pkey,
683 ctx->libctx, ctx->propq)) {
684 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR);
688 ASN1_STRING_set0(si->signature, sig, siglen);
694 EVP_MD_CTX_free(mctx);
695 EVP_PKEY_CTX_free(pctx);
700 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
702 STACK_OF(CMS_SignerInfo) *sinfos;
706 sinfos = CMS_get0_SignerInfos(cms);
707 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
708 si = sk_CMS_SignerInfo_value(sinfos, i);
709 if (!cms_SignerInfo_content_sign(cms, si, chain))
712 cms->d.signedData->encapContentInfo->partial = 0;
716 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
718 EVP_MD_CTX *mctx = si->mctx;
719 EVP_PKEY_CTX *pctx = NULL;
720 unsigned char *abuf = NULL;
723 const CMS_CTX *ctx = si->cms_ctx;
724 const char *md_name = OBJ_nid2sn(OBJ_obj2nid(si->digestAlgorithm->algorithm));
729 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
730 if (!cms_add1_signingTime(si, NULL))
734 if (!CMS_si_check_attributes(si))
740 EVP_MD_CTX_reset(mctx);
741 if (EVP_DigestSignInit_with_libctx(mctx, &pctx,
742 md_name, ctx->libctx, ctx->propq,
749 * TODO(3.0): This causes problems when providers are in use, so disabled
750 * for now. Can we get rid of this completely? AFAICT this ctrl has been
751 * present since CMS was first put in - but has never been used to do
752 * anything. All internal implementations just return 1 and ignore this ctrl
753 * and have always done so by the looks of things. To fix this we could
754 * convert this ctrl into a param, which would require us to send all the
755 * signer info data as a set of params...but that is non-trivial and since
756 * this isn't used by anything it may be better just to remove it.
759 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
760 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
761 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
766 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
767 ASN1_ITEM_rptr(CMS_Attributes_Sign));
770 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
772 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
775 abuf = OPENSSL_malloc(siglen);
778 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
782 * TODO(3.0): This causes problems when providers are in use, so disabled
783 * for now. Can we get rid of this completely? AFAICT this ctrl has been
784 * present since CMS was first put in - but has never been used to do
785 * anything. All internal implementations just return 1 and ignore this ctrl
786 * and have always done so by the looks of things. To fix this we could
787 * convert this ctrl into a param, which would require us to send all the
788 * signer info data as a set of params...but that is non-trivial and since
789 * this isn't used by anything it may be better just to remove it.
792 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
793 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
794 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
799 EVP_MD_CTX_reset(mctx);
801 ASN1_STRING_set0(si->signature, abuf, siglen);
807 EVP_MD_CTX_reset(mctx);
811 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
813 EVP_MD_CTX *mctx = NULL;
814 unsigned char *abuf = NULL;
818 EVP_MD *fetched_md = NULL;
819 const CMS_CTX *ctx = si->cms_ctx;
821 if (si->pkey == NULL) {
822 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
826 if (!CMS_si_check_attributes(si))
829 name = OBJ_nid2sn(OBJ_obj2nid(si->digestAlgorithm->algorithm));
831 (void)ERR_set_mark();
832 fetched_md = EVP_MD_fetch(ctx->libctx, name, ctx->propq);
834 if (fetched_md != NULL)
837 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
839 (void)ERR_clear_last_mark();
840 CMSerr(0, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
843 (void)ERR_pop_to_mark();
845 if (si->mctx == NULL && (si->mctx = EVP_MD_CTX_new()) == NULL) {
846 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, ERR_R_MALLOC_FAILURE);
850 if (EVP_DigestVerifyInit_with_libctx(mctx, &si->pctx,
851 EVP_MD_name(md), ctx->libctx, NULL,
855 if (!cms_sd_asn1_ctrl(si, 1))
858 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
859 ASN1_ITEM_rptr(CMS_Attributes_Verify));
862 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
868 r = EVP_DigestVerifyFinal(mctx,
869 si->signature->data, si->signature->length);
871 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
873 EVP_MD_free(fetched_md);
874 EVP_MD_CTX_reset(mctx);
878 /* Create a chain of digest BIOs from a CMS ContentInfo */
880 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
886 sd = cms_get0_signed(cms);
889 if (cms->d.signedData->encapContentInfo->partial)
890 cms_sd_set_version(sd);
891 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
892 X509_ALGOR *digestAlgorithm;
895 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
896 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm, cms_get0_cmsctx(cms));
900 BIO_push(chain, mdbio);
910 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
912 ASN1_OCTET_STRING *os = NULL;
913 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
914 EVP_PKEY_CTX *pkctx = NULL;
916 unsigned char mval[EVP_MAX_MD_SIZE];
920 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, ERR_R_MALLOC_FAILURE);
923 /* If we have any signed attributes look for messageDigest value */
924 if (CMS_signed_get_attr_count(si) >= 0) {
925 os = CMS_signed_get0_data_by_OBJ(si,
926 OBJ_nid2obj(NID_pkcs9_messageDigest),
927 -3, V_ASN1_OCTET_STRING);
929 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
930 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
935 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
938 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
939 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
940 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
944 /* If messageDigest found compare it */
947 if (mlen != (unsigned int)os->length) {
948 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
949 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
953 if (memcmp(mval, os->data, mlen)) {
954 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
955 CMS_R_VERIFICATION_FAILURE);
960 const EVP_MD *md = EVP_MD_CTX_md(mctx);
961 const CMS_CTX *ctx = si->cms_ctx;
963 pkctx = EVP_PKEY_CTX_new_from_pkey(ctx->libctx, si->pkey, ctx->propq);
966 if (EVP_PKEY_verify_init(pkctx) <= 0)
968 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
971 if (!cms_sd_asn1_ctrl(si, 1))
973 r = EVP_PKEY_verify(pkctx, si->signature->data,
974 si->signature->length, mval, mlen);
976 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
977 CMS_R_VERIFICATION_FAILURE);
983 EVP_PKEY_CTX_free(pkctx);
984 EVP_MD_CTX_free(mctx);
989 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
991 unsigned char *smder = NULL;
994 smderlen = i2d_X509_ALGORS(algs, &smder);
997 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
998 V_ASN1_SEQUENCE, smder, smderlen);
1003 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
1004 int algnid, int keysize)
1007 ASN1_INTEGER *key = NULL;
1010 key = ASN1_INTEGER_new();
1011 if (key == NULL || !ASN1_INTEGER_set(key, keysize)) {
1012 ASN1_INTEGER_free(key);
1016 alg = X509_ALGOR_new();
1018 ASN1_INTEGER_free(key);
1022 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
1023 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
1025 *algs = sk_X509_ALGOR_new_null();
1026 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
1027 X509_ALGOR_free(alg);
1033 /* Check to see if a cipher exists and if so add S/MIME capabilities */
1035 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1037 if (EVP_get_cipherbynid(nid))
1038 return CMS_add_simple_smimecap(sk, nid, arg);
1042 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1044 if (EVP_get_digestbynid(nid))
1045 return CMS_add_simple_smimecap(sk, nid, arg);
1049 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
1051 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
1052 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
1053 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
1054 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
1055 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
1056 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
1057 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
1058 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
1059 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
1060 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
1061 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
1062 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))