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 /* CMS SignedData Utilities */
27 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
29 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
30 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
33 return cms->d.signedData;
36 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
38 if (cms->d.other == NULL) {
39 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
40 if (!cms->d.signedData) {
41 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
44 cms->d.signedData->version = 1;
45 cms->d.signedData->encapContentInfo->eContentType =
46 OBJ_nid2obj(NID_pkcs7_data);
47 cms->d.signedData->encapContentInfo->partial = 1;
48 ASN1_OBJECT_free(cms->contentType);
49 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
50 return cms->d.signedData;
52 return cms_get0_signed(cms);
55 /* Just initialise SignedData e.g. for certs only structure */
57 int CMS_SignedData_init(CMS_ContentInfo *cms)
59 if (cms_signed_data_init(cms))
66 /* Check structures and fixup version numbers (if necessary) */
68 static void cms_sd_set_version(CMS_SignedData *sd)
71 CMS_CertificateChoices *cch;
72 CMS_RevocationInfoChoice *rch;
75 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
76 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
77 if (cch->type == CMS_CERTCHOICE_OTHER) {
80 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
83 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
89 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
90 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
91 if (rch->type == CMS_REVCHOICE_OTHER) {
97 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
101 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
102 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
103 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
108 } else if (si->version < 1)
118 * RFC 5652 Section 11.1 Content Type
119 * The content-type attribute within signed-data MUST
120 * 1) be present if there are signed attributes
121 * 2) match the content type in the signed-data,
122 * 3) be a signed attribute.
123 * 4) not have more than one copy of the attribute.
125 * Note that since the CMS_SignerInfo_sign() always adds the "signing time"
126 * attribute, the content type attribute MUST be added also.
127 * Assumptions: This assumes that the attribute does not already exist.
129 static int cms_set_si_contentType_attr(CMS_ContentInfo *cms, CMS_SignerInfo *si)
131 ASN1_OBJECT *ctype = cms->d.signedData->encapContentInfo->eContentType;
133 /* Add the contentType attribute */
134 return CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
135 V_ASN1_OBJECT, ctype, -1) > 0;
138 /* Copy an existing messageDigest value */
140 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
142 STACK_OF(CMS_SignerInfo) *sinfos;
143 CMS_SignerInfo *sitmp;
146 sinfos = CMS_get0_SignerInfos(cms);
147 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
148 ASN1_OCTET_STRING *messageDigest;
150 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
153 if (CMS_signed_get_attr_count(sitmp) < 0)
155 if (OBJ_cmp(si->digestAlgorithm->algorithm,
156 sitmp->digestAlgorithm->algorithm))
158 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
160 (NID_pkcs9_messageDigest),
161 -3, V_ASN1_OCTET_STRING);
162 if (!messageDigest) {
163 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
167 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
174 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_DIGEST);
178 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type,
182 case CMS_SIGNERINFO_ISSUER_SERIAL:
183 if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
187 case CMS_SIGNERINFO_KEYIDENTIFIER:
188 if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
193 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_ID);
202 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
203 ASN1_OCTET_STRING **keyid,
207 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
209 *issuer = sid->d.issuerAndSerialNumber->issuer;
211 *sno = sid->d.issuerAndSerialNumber->serialNumber;
212 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
214 *keyid = sid->d.subjectKeyIdentifier;
220 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
222 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
223 return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
224 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
225 return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
230 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
232 EVP_PKEY *pkey = si->pkey;
235 if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC"))
236 return cms_ecdsa_dsa_sign(si, cmd);
237 else if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
238 return cms_rsa_sign(si, cmd);
240 /* Something else? We'll give engines etc a chance to handle this */
241 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
243 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
245 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
249 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_FAILURE);
255 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
256 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
260 CMS_SignerInfo *si = NULL;
263 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
265 if (!X509_check_private_key(signer, pk)) {
266 ERR_raise(ERR_LIB_CMS, CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
269 sd = cms_signed_data_init(cms);
272 si = M_ASN1_new_of(CMS_SignerInfo);
275 /* Call for side-effect of computing hash and caching extensions */
276 X509_check_purpose(signer, -1, -1);
284 si->mctx = EVP_MD_CTX_new();
287 if (si->mctx == NULL) {
288 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
292 if (flags & CMS_USE_KEYID) {
296 type = CMS_SIGNERINFO_KEYIDENTIFIER;
298 type = CMS_SIGNERINFO_ISSUER_SERIAL;
302 if (!cms_set1_SignerIdentifier(si->sid, signer, type, ctx))
307 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
309 md = EVP_get_digestbynid(def_nid);
311 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST);
317 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DIGEST_SET);
322 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DIGEST_SET);
326 X509_ALGOR_set_md(si->digestAlgorithm, md);
328 /* See if digest is present in digestAlgorithms */
329 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
330 const ASN1_OBJECT *aoid;
331 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
332 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
333 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
337 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
338 alg = X509_ALGOR_new();
341 X509_ALGOR_set_md(alg, md);
342 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
343 X509_ALGOR_free(alg);
348 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
350 if (!(flags & CMS_NOATTR)) {
352 * Initialize signed attributes structure so other attributes
353 * such as signing time etc are added later even if we add none here.
355 if (!si->signedAttrs) {
356 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
357 if (!si->signedAttrs)
361 if (!(flags & CMS_NOSMIMECAP)) {
362 STACK_OF(X509_ALGOR) *smcap = NULL;
363 i = CMS_add_standard_smimecap(&smcap);
365 i = CMS_add_smimecap(si, smcap);
366 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
370 if (flags & CMS_CADES) {
371 ESS_SIGNING_CERT *sc = NULL;
372 ESS_SIGNING_CERT_V2 *sc2 = NULL;
375 if (md == EVP_sha1() || md == NULL) {
376 if ((sc = ESS_SIGNING_CERT_new_init(signer,
379 add_sc = cms_add1_signing_cert(si, sc);
380 ESS_SIGNING_CERT_free(sc);
382 if ((sc2 = ESS_SIGNING_CERT_V2_new_init(md, signer,
385 add_sc = cms_add1_signing_cert_v2(si, sc2);
386 ESS_SIGNING_CERT_V2_free(sc2);
391 if (flags & CMS_REUSE_DIGEST) {
392 if (!cms_copy_messageDigest(cms, si))
394 if (!cms_set_si_contentType_attr(cms, si))
396 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
397 !CMS_SignerInfo_sign(si))
402 if (!(flags & CMS_NOCERTS)) {
403 /* NB ignore -1 return for duplicate cert */
404 if (!CMS_add1_cert(cms, signer))
408 if (flags & CMS_KEY_PARAM) {
409 if (flags & CMS_NOATTR) {
410 si->pctx = EVP_PKEY_CTX_new_from_pkey(cms_ctx_get0_libctx(ctx),
412 cms_ctx_get0_propq(ctx));
413 if (si->pctx == NULL)
415 if (EVP_PKEY_sign_init(si->pctx) <= 0)
417 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
419 } else if (EVP_DigestSignInit_ex(si->mctx, &si->pctx, EVP_MD_name(md),
420 cms_ctx_get0_libctx(ctx),
421 cms_ctx_get0_propq(ctx), pk) <= 0) {
426 if (!sd->signerInfos)
427 sd->signerInfos = sk_CMS_SignerInfo_new_null();
428 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
434 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
436 M_ASN1_free_of(si, CMS_SignerInfo);
441 void cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms)
445 STACK_OF(CMS_SignerInfo) *sinfos = CMS_get0_SignerInfos(cms);
446 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
448 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
449 si = sk_CMS_SignerInfo_value(sinfos, i);
455 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
463 tt = X509_gmtime_adj(NULL, 0);
468 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
469 tt->type, tt, -1) <= 0)
478 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
484 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
489 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
494 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
496 CMS_SignedData *sd = cms_get0_signed(cms);
498 return sd != NULL ? sd->signerInfos : NULL;
501 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
503 STACK_OF(X509) *signers = NULL;
504 STACK_OF(CMS_SignerInfo) *sinfos;
508 sinfos = CMS_get0_SignerInfos(cms);
509 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
510 si = sk_CMS_SignerInfo_value(sinfos, i);
511 if (si->signer != NULL) {
512 if (!X509_add_cert_new(&signers, si->signer,
513 X509_ADD_FLAG_DEFAULT)) {
514 sk_X509_free(signers);
522 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
524 if (signer != NULL) {
526 EVP_PKEY_free(si->pkey);
527 si->pkey = X509_get_pubkey(signer);
529 X509_free(si->signer);
533 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
534 ASN1_OCTET_STRING **keyid,
535 X509_NAME **issuer, ASN1_INTEGER **sno)
537 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
540 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
542 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
545 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
550 CMS_CertificateChoices *cch;
551 STACK_OF(CMS_CertificateChoices) *certs;
556 sd = cms_get0_signed(cms);
559 certs = sd->certificates;
560 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
561 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
562 if (si->signer != NULL)
565 for (j = 0; j < sk_X509_num(scerts); j++) {
566 x = sk_X509_value(scerts, j);
567 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
568 CMS_SignerInfo_set1_signer_cert(si, x);
574 if (si->signer != NULL || (flags & CMS_NOINTERN))
577 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
578 cch = sk_CMS_CertificateChoices_value(certs, j);
581 x = cch->d.certificate;
582 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
583 CMS_SignerInfo_set1_signer_cert(si, x);
592 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
593 X509 **signer, X509_ALGOR **pdig,
599 *signer = si->signer;
601 *pdig = si->digestAlgorithm;
603 *psig = si->signatureAlgorithm;
606 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
608 return si->signature;
611 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
612 CMS_SignerInfo *si, BIO *chain)
614 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
616 EVP_PKEY_CTX *pctx = NULL;
617 const CMS_CTX *ctx = cms_get0_cmsctx(cms);
620 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
624 if (si->pkey == NULL) {
625 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY);
629 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
631 /* Set SignerInfo algorithm details if we used custom parameter */
632 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
636 * If any signed attributes calculate and add messageDigest attribute
639 if (CMS_signed_get_attr_count(si) >= 0) {
640 unsigned char md[EVP_MAX_MD_SIZE];
643 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
645 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
646 V_ASN1_OCTET_STRING, md, mdlen))
648 /* Copy content type across */
649 if (!cms_set_si_contentType_attr(cms, si))
652 if (!CMS_SignerInfo_sign(si))
654 } else if (si->pctx) {
657 unsigned char md[EVP_MAX_MD_SIZE];
661 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
663 siglen = EVP_PKEY_size(si->pkey);
664 sig = OPENSSL_malloc(siglen);
666 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
669 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
673 ASN1_STRING_set0(si->signature, sig, siglen);
678 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
680 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
683 if (!EVP_SignFinal_ex(mctx, sig, &siglen, si->pkey,
684 cms_ctx_get0_libctx(ctx),
685 cms_ctx_get0_propq(ctx))) {
686 ERR_raise(ERR_LIB_CMS, CMS_R_SIGNFINAL_ERROR);
690 ASN1_STRING_set0(si->signature, sig, siglen);
696 EVP_MD_CTX_free(mctx);
697 EVP_PKEY_CTX_free(pctx);
702 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
704 STACK_OF(CMS_SignerInfo) *sinfos;
708 sinfos = CMS_get0_SignerInfos(cms);
709 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
710 si = sk_CMS_SignerInfo_value(sinfos, i);
711 if (!cms_SignerInfo_content_sign(cms, si, chain))
714 cms->d.signedData->encapContentInfo->partial = 0;
718 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
720 EVP_MD_CTX *mctx = si->mctx;
721 EVP_PKEY_CTX *pctx = NULL;
722 unsigned char *abuf = NULL;
725 const CMS_CTX *ctx = si->cms_ctx;
726 const char *md_name = OBJ_nid2sn(OBJ_obj2nid(si->digestAlgorithm->algorithm));
731 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
732 if (!cms_add1_signingTime(si, NULL))
736 if (!CMS_si_check_attributes(si))
742 EVP_MD_CTX_reset(mctx);
743 if (EVP_DigestSignInit_ex(mctx, &pctx, md_name, cms_ctx_get0_libctx(ctx),
744 cms_ctx_get0_propq(ctx), si->pkey) <= 0)
750 * TODO(3.0): This causes problems when providers are in use, so disabled
751 * for now. Can we get rid of this completely? AFAICT this ctrl has been
752 * present since CMS was first put in - but has never been used to do
753 * anything. All internal implementations just return 1 and ignore this ctrl
754 * and have always done so by the looks of things. To fix this we could
755 * convert this ctrl into a param, which would require us to send all the
756 * signer info data as a set of params...but that is non-trivial and since
757 * this isn't used by anything it may be better just to remove it.
760 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
761 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
762 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_ERROR);
767 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
768 ASN1_ITEM_rptr(CMS_Attributes_Sign));
771 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
773 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
776 abuf = OPENSSL_malloc(siglen);
779 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
783 * TODO(3.0): This causes problems when providers are in use, so disabled
784 * for now. Can we get rid of this completely? AFAICT this ctrl has been
785 * present since CMS was first put in - but has never been used to do
786 * anything. All internal implementations just return 1 and ignore this ctrl
787 * and have always done so by the looks of things. To fix this we could
788 * convert this ctrl into a param, which would require us to send all the
789 * signer info data as a set of params...but that is non-trivial and since
790 * this isn't used by anything it may be better just to remove it.
793 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
794 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
795 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_ERROR);
800 EVP_MD_CTX_reset(mctx);
802 ASN1_STRING_set0(si->signature, abuf, siglen);
808 EVP_MD_CTX_reset(mctx);
812 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
814 EVP_MD_CTX *mctx = NULL;
815 unsigned char *abuf = NULL;
819 EVP_MD *fetched_md = NULL;
820 const CMS_CTX *ctx = si->cms_ctx;
821 OSSL_LIB_CTX *libctx = cms_ctx_get0_libctx(ctx);
822 const char *propq = cms_ctx_get0_propq(ctx);
824 if (si->pkey == NULL) {
825 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PUBLIC_KEY);
829 if (!CMS_si_check_attributes(si))
832 name = OBJ_nid2sn(OBJ_obj2nid(si->digestAlgorithm->algorithm));
834 (void)ERR_set_mark();
835 fetched_md = EVP_MD_fetch(libctx, name, propq);
837 if (fetched_md != NULL)
840 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
842 (void)ERR_clear_last_mark();
843 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
846 (void)ERR_pop_to_mark();
848 if (si->mctx == NULL && (si->mctx = EVP_MD_CTX_new()) == NULL) {
849 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
853 if (EVP_DigestVerifyInit_ex(mctx, &si->pctx, EVP_MD_name(md), libctx,
854 propq, si->pkey) <= 0)
857 if (!cms_sd_asn1_ctrl(si, 1))
860 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
861 ASN1_ITEM_rptr(CMS_Attributes_Verify));
862 if (abuf == NULL || alen < 0)
864 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
870 r = EVP_DigestVerifyFinal(mctx,
871 si->signature->data, si->signature->length);
873 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
875 EVP_MD_free(fetched_md);
876 EVP_MD_CTX_reset(mctx);
880 /* Create a chain of digest BIOs from a CMS ContentInfo */
882 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
888 sd = cms_get0_signed(cms);
891 if (cms->d.signedData->encapContentInfo->partial)
892 cms_sd_set_version(sd);
893 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
894 X509_ALGOR *digestAlgorithm;
897 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
898 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm, cms_get0_cmsctx(cms));
902 BIO_push(chain, mdbio);
912 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
914 ASN1_OCTET_STRING *os = NULL;
915 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
916 EVP_PKEY_CTX *pkctx = NULL;
918 unsigned char mval[EVP_MAX_MD_SIZE];
922 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
925 /* If we have any signed attributes look for messageDigest value */
926 if (CMS_signed_get_attr_count(si) >= 0) {
927 os = CMS_signed_get0_data_by_OBJ(si,
928 OBJ_nid2obj(NID_pkcs9_messageDigest),
929 -3, V_ASN1_OCTET_STRING);
931 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
936 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
939 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
940 ERR_raise(ERR_LIB_CMS, CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
944 /* If messageDigest found compare it */
947 if (mlen != (unsigned int)os->length) {
948 ERR_raise(ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
952 if (memcmp(mval, os->data, mlen)) {
953 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
958 const EVP_MD *md = EVP_MD_CTX_md(mctx);
959 const CMS_CTX *ctx = si->cms_ctx;
961 pkctx = EVP_PKEY_CTX_new_from_pkey(cms_ctx_get0_libctx(ctx), si->pkey,
962 cms_ctx_get0_propq(ctx));
965 if (EVP_PKEY_verify_init(pkctx) <= 0)
967 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
970 if (!cms_sd_asn1_ctrl(si, 1))
972 r = EVP_PKEY_verify(pkctx, si->signature->data,
973 si->signature->length, mval, mlen);
975 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
981 EVP_PKEY_CTX_free(pkctx);
982 EVP_MD_CTX_free(mctx);
987 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
989 unsigned char *smder = NULL;
992 smderlen = i2d_X509_ALGORS(algs, &smder);
995 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
996 V_ASN1_SEQUENCE, smder, smderlen);
1001 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
1002 int algnid, int keysize)
1005 ASN1_INTEGER *key = NULL;
1008 key = ASN1_INTEGER_new();
1009 if (key == NULL || !ASN1_INTEGER_set(key, keysize)) {
1010 ASN1_INTEGER_free(key);
1014 alg = X509_ALGOR_new();
1016 ASN1_INTEGER_free(key);
1020 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
1021 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
1023 *algs = sk_X509_ALGOR_new_null();
1024 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
1025 X509_ALGOR_free(alg);
1031 /* Check to see if a cipher exists and if so add S/MIME capabilities */
1033 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1035 if (EVP_get_cipherbynid(nid))
1036 return CMS_add_simple_smimecap(sk, nid, arg);
1040 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1042 if (EVP_get_digestbynid(nid))
1043 return CMS_add_simple_smimecap(sk, nid, arg);
1047 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
1049 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
1050 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
1051 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
1052 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
1053 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
1054 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
1055 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
1056 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
1057 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
1058 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
1059 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
1060 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))