2 * Copyright 2008-2022 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 "internal/sizes.h"
19 #include "crypto/asn1.h"
20 #include "crypto/evp.h"
21 #include "crypto/ess.h"
22 #include "crypto/x509.h" /* for ossl_x509_add_cert_new() */
23 #include "cms_local.h"
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 ossl_cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert,
179 int type, const CMS_CTX *ctx)
182 case CMS_SIGNERINFO_ISSUER_SERIAL:
183 if (!ossl_cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
187 case CMS_SIGNERINFO_KEYIDENTIFIER:
188 if (!ossl_cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
193 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_ID);
202 int ossl_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 ossl_cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
222 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
223 return ossl_cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
224 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
225 return ossl_cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
230 /* Method to map any, incl. provider-implemented PKEY types to OIDs */
231 /* ECDSA and DSA and all provider-delivered signatures implementation is the same */
232 static int cms_generic_sign(CMS_SignerInfo *si, int verify)
234 if (!ossl_assert(verify == 0 || verify == 1))
238 int snid, hnid, pknid;
239 X509_ALGOR *alg1, *alg2;
240 EVP_PKEY *pkey = si->pkey;
241 pknid = EVP_PKEY_get_id(pkey);
243 CMS_SignerInfo_get0_algs(si, NULL, NULL, &alg1, &alg2);
244 if (alg1 == NULL || alg1->algorithm == NULL)
246 hnid = OBJ_obj2nid(alg1->algorithm);
247 if (hnid == NID_undef)
249 if (pknid <= 0) { /* check whether a provider registered a NID */
250 const char *typename = EVP_PKEY_get0_type_name(pkey);
251 if (typename != NULL)
252 pknid = OBJ_txt2nid(typename);
254 if (!OBJ_find_sigid_by_algs(&snid, hnid, pknid))
256 return X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, NULL);
261 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
263 EVP_PKEY *pkey = si->pkey;
266 if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC"))
267 return cms_generic_sign(si, cmd);
268 else if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
269 return ossl_cms_rsa_sign(si, cmd);
271 /* Now give engines, providers, etc a chance to handle this */
272 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
273 return cms_generic_sign(si, cmd);
274 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
276 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
280 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_FAILURE);
286 /* Add SigningCertificate signed attribute to the signer info. */
287 static int ossl_cms_add1_signing_cert(CMS_SignerInfo *si,
288 const ESS_SIGNING_CERT *sc)
290 ASN1_STRING *seq = NULL;
291 unsigned char *p, *pp = NULL;
292 int ret, len = i2d_ESS_SIGNING_CERT(sc, NULL);
294 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
298 i2d_ESS_SIGNING_CERT(sc, &p);
299 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
300 ASN1_STRING_free(seq);
305 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
306 V_ASN1_SEQUENCE, seq, -1);
307 ASN1_STRING_free(seq);
311 /* Add SigningCertificateV2 signed attribute to the signer info. */
312 static int ossl_cms_add1_signing_cert_v2(CMS_SignerInfo *si,
313 const ESS_SIGNING_CERT_V2 *sc)
315 ASN1_STRING *seq = NULL;
316 unsigned char *p, *pp = NULL;
317 int ret, len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
319 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
323 i2d_ESS_SIGNING_CERT_V2(sc, &p);
324 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
325 ASN1_STRING_free(seq);
330 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
331 V_ASN1_SEQUENCE, seq, -1);
332 ASN1_STRING_free(seq);
336 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
337 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
341 CMS_SignerInfo *si = NULL;
344 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
346 if (!X509_check_private_key(signer, pk)) {
347 ERR_raise(ERR_LIB_CMS, CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
350 sd = cms_signed_data_init(cms);
353 si = M_ASN1_new_of(CMS_SignerInfo);
356 /* Call for side-effect of computing hash and caching extensions */
357 X509_check_purpose(signer, -1, -1);
365 si->mctx = EVP_MD_CTX_new();
368 if (si->mctx == NULL) {
369 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
373 if (flags & CMS_USE_KEYID) {
377 type = CMS_SIGNERINFO_KEYIDENTIFIER;
379 type = CMS_SIGNERINFO_ISSUER_SERIAL;
383 if (!ossl_cms_set1_SignerIdentifier(si->sid, signer, type, ctx))
389 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
391 md = EVP_get_digestbynid(def_nid);
393 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST);
399 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DIGEST_SET);
403 X509_ALGOR_set_md(si->digestAlgorithm, md);
405 /* See if digest is present in digestAlgorithms */
406 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
407 const ASN1_OBJECT *aoid;
408 char name[OSSL_MAX_NAME_SIZE];
410 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
411 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
412 OBJ_obj2txt(name, sizeof(name), aoid, 0);
413 if (EVP_MD_is_a(md, name))
417 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
418 if ((alg = X509_ALGOR_new()) == NULL)
420 X509_ALGOR_set_md(alg, md);
421 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
422 X509_ALGOR_free(alg);
427 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
429 if (!(flags & CMS_NOATTR)) {
431 * Initialize signed attributes structure so other attributes
432 * such as signing time etc are added later even if we add none here.
434 if (!si->signedAttrs) {
435 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
436 if (!si->signedAttrs)
440 if (!(flags & CMS_NOSMIMECAP)) {
441 STACK_OF(X509_ALGOR) *smcap = NULL;
442 i = CMS_add_standard_smimecap(&smcap);
444 i = CMS_add_smimecap(si, smcap);
445 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
449 if (flags & CMS_CADES) {
450 ESS_SIGNING_CERT *sc = NULL;
451 ESS_SIGNING_CERT_V2 *sc2 = NULL;
454 if (md == NULL || EVP_MD_is_a(md, SN_sha1)) {
455 if ((sc = OSSL_ESS_signing_cert_new_init(signer,
458 add_sc = ossl_cms_add1_signing_cert(si, sc);
459 ESS_SIGNING_CERT_free(sc);
461 if ((sc2 = OSSL_ESS_signing_cert_v2_new_init(md, signer,
464 add_sc = ossl_cms_add1_signing_cert_v2(si, sc2);
465 ESS_SIGNING_CERT_V2_free(sc2);
470 if (flags & CMS_REUSE_DIGEST) {
471 if (!cms_copy_messageDigest(cms, si))
473 if (!cms_set_si_contentType_attr(cms, si))
475 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
476 !CMS_SignerInfo_sign(si))
481 if (!(flags & CMS_NOCERTS)) {
482 /* NB ignore -1 return for duplicate cert */
483 if (!CMS_add1_cert(cms, signer))
487 if (flags & CMS_KEY_PARAM) {
488 if (flags & CMS_NOATTR) {
489 si->pctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
491 ossl_cms_ctx_get0_propq(ctx));
492 if (si->pctx == NULL)
494 if (EVP_PKEY_sign_init(si->pctx) <= 0)
496 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
498 } else if (EVP_DigestSignInit_ex(si->mctx, &si->pctx,
499 EVP_MD_get0_name(md),
500 ossl_cms_ctx_get0_libctx(ctx),
501 ossl_cms_ctx_get0_propq(ctx),
507 if (!sd->signerInfos)
508 sd->signerInfos = sk_CMS_SignerInfo_new_null();
509 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
515 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
517 M_ASN1_free_of(si, CMS_SignerInfo);
522 void ossl_cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms)
526 STACK_OF(CMS_SignerInfo) *sinfos;
527 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
530 sinfos = CMS_get0_SignerInfos(cms);
531 ERR_pop_to_mark(); /* removes error in case sinfos == NULL */
533 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
534 si = sk_CMS_SignerInfo_value(sinfos, i);
540 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
548 tt = X509_gmtime_adj(NULL, 0);
553 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
554 tt->type, tt, -1) <= 0)
563 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
569 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
574 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
579 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
581 CMS_SignedData *sd = cms_get0_signed(cms);
583 return sd != NULL ? sd->signerInfos : NULL;
586 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
588 STACK_OF(X509) *signers = NULL;
589 STACK_OF(CMS_SignerInfo) *sinfos;
593 sinfos = CMS_get0_SignerInfos(cms);
594 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
595 si = sk_CMS_SignerInfo_value(sinfos, i);
596 if (si->signer != NULL) {
597 if (!ossl_x509_add_cert_new(&signers, si->signer,
598 X509_ADD_FLAG_DEFAULT)) {
599 sk_X509_free(signers);
607 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
609 if (signer != NULL) {
611 EVP_PKEY_free(si->pkey);
612 si->pkey = X509_get_pubkey(signer);
614 X509_free(si->signer);
618 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
619 ASN1_OCTET_STRING **keyid,
620 X509_NAME **issuer, ASN1_INTEGER **sno)
622 return ossl_cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
625 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
627 return ossl_cms_SignerIdentifier_cert_cmp(si->sid, cert);
630 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
635 CMS_CertificateChoices *cch;
636 STACK_OF(CMS_CertificateChoices) *certs;
641 sd = cms_get0_signed(cms);
644 certs = sd->certificates;
645 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
646 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
647 if (si->signer != NULL)
650 for (j = 0; j < sk_X509_num(scerts); j++) {
651 x = sk_X509_value(scerts, j);
652 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
653 CMS_SignerInfo_set1_signer_cert(si, x);
659 if (si->signer != NULL || (flags & CMS_NOINTERN))
662 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
663 cch = sk_CMS_CertificateChoices_value(certs, j);
666 x = cch->d.certificate;
667 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
668 CMS_SignerInfo_set1_signer_cert(si, x);
677 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
678 X509 **signer, X509_ALGOR **pdig,
684 *signer = si->signer;
686 *pdig = si->digestAlgorithm;
688 *psig = si->signatureAlgorithm;
691 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
693 return si->signature;
696 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
697 CMS_SignerInfo *si, BIO *chain,
698 const unsigned char *md,
701 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
703 EVP_PKEY_CTX *pctx = NULL;
704 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
707 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
711 if (si->pkey == NULL) {
712 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY);
716 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
718 /* Set SignerInfo algorithm details if we used custom parameter */
719 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
723 * If any signed attributes calculate and add messageDigest attribute
726 if (CMS_signed_get_attr_count(si) >= 0) {
727 unsigned char computed_md[EVP_MAX_MD_SIZE];
730 if (!EVP_DigestFinal_ex(mctx, computed_md, &mdlen))
734 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
735 V_ASN1_OCTET_STRING, md, mdlen))
737 /* Copy content type across */
738 if (!cms_set_si_contentType_attr(cms, si))
741 if (!CMS_SignerInfo_sign(si))
743 } else if (si->pctx) {
746 unsigned char computed_md[EVP_MAX_MD_SIZE];
750 if (!EVP_DigestFinal_ex(mctx, computed_md, &mdlen))
754 siglen = EVP_PKEY_get_size(si->pkey);
755 sig = OPENSSL_malloc(siglen);
757 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
760 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
764 ASN1_STRING_set0(si->signature, sig, siglen);
770 ERR_raise(ERR_LIB_CMS, CMS_R_OPERATION_UNSUPPORTED);
773 sig = OPENSSL_malloc(EVP_PKEY_get_size(si->pkey));
775 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
778 if (!EVP_SignFinal_ex(mctx, sig, &siglen, si->pkey,
779 ossl_cms_ctx_get0_libctx(ctx),
780 ossl_cms_ctx_get0_propq(ctx))) {
781 ERR_raise(ERR_LIB_CMS, CMS_R_SIGNFINAL_ERROR);
785 ASN1_STRING_set0(si->signature, sig, siglen);
791 EVP_MD_CTX_free(mctx);
792 EVP_PKEY_CTX_free(pctx);
797 int ossl_cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain,
798 const unsigned char *precomp_md,
799 unsigned int precomp_mdlen)
801 STACK_OF(CMS_SignerInfo) *sinfos;
805 sinfos = CMS_get0_SignerInfos(cms);
806 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
807 si = sk_CMS_SignerInfo_value(sinfos, i);
808 if (!cms_SignerInfo_content_sign(cms, si, chain, precomp_md, precomp_mdlen))
811 cms->d.signedData->encapContentInfo->partial = 0;
815 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
817 EVP_MD_CTX *mctx = si->mctx;
818 EVP_PKEY_CTX *pctx = NULL;
819 unsigned char *abuf = NULL;
822 const CMS_CTX *ctx = si->cms_ctx;
823 char md_name[OSSL_MAX_NAME_SIZE];
825 if (OBJ_obj2txt(md_name, sizeof(md_name),
826 si->digestAlgorithm->algorithm, 0) <= 0)
829 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
830 if (!cms_add1_signingTime(si, NULL))
834 if (!ossl_cms_si_check_attributes(si))
840 EVP_MD_CTX_reset(mctx);
841 if (EVP_DigestSignInit_ex(mctx, &pctx, md_name,
842 ossl_cms_ctx_get0_libctx(ctx),
843 ossl_cms_ctx_get0_propq(ctx), si->pkey,
849 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
850 ASN1_ITEM_rptr(CMS_Attributes_Sign));
853 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
855 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
858 abuf = OPENSSL_malloc(siglen);
861 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
864 EVP_MD_CTX_reset(mctx);
866 ASN1_STRING_set0(si->signature, abuf, siglen);
872 EVP_MD_CTX_reset(mctx);
876 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
878 EVP_MD_CTX *mctx = NULL;
879 unsigned char *abuf = NULL;
881 char name[OSSL_MAX_NAME_SIZE];
883 EVP_MD *fetched_md = NULL;
884 const CMS_CTX *ctx = si->cms_ctx;
885 OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
886 const char *propq = ossl_cms_ctx_get0_propq(ctx);
888 if (si->pkey == NULL) {
889 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PUBLIC_KEY);
893 if (!ossl_cms_si_check_attributes(si))
896 OBJ_obj2txt(name, sizeof(name), si->digestAlgorithm->algorithm, 0);
898 (void)ERR_set_mark();
899 fetched_md = EVP_MD_fetch(libctx, name, propq);
901 if (fetched_md != NULL)
904 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
906 (void)ERR_clear_last_mark();
907 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
910 (void)ERR_pop_to_mark();
912 if (si->mctx == NULL && (si->mctx = EVP_MD_CTX_new()) == NULL) {
913 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
917 if (EVP_DigestVerifyInit_ex(mctx, &si->pctx, EVP_MD_get0_name(md), libctx,
918 propq, si->pkey, NULL) <= 0)
921 if (!cms_sd_asn1_ctrl(si, 1))
924 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
925 ASN1_ITEM_rptr(CMS_Attributes_Verify));
926 if (abuf == NULL || alen < 0)
928 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
934 r = EVP_DigestVerifyFinal(mctx,
935 si->signature->data, si->signature->length);
937 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
939 EVP_MD_free(fetched_md);
940 EVP_MD_CTX_reset(mctx);
944 /* Create a chain of digest BIOs from a CMS ContentInfo */
946 BIO *ossl_cms_SignedData_init_bio(CMS_ContentInfo *cms)
952 sd = cms_get0_signed(cms);
955 if (cms->d.signedData->encapContentInfo->partial)
956 cms_sd_set_version(sd);
957 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
958 X509_ALGOR *digestAlgorithm;
961 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
962 mdbio = ossl_cms_DigestAlgorithm_init_bio(digestAlgorithm,
963 ossl_cms_get0_cmsctx(cms));
967 BIO_push(chain, mdbio);
977 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
979 ASN1_OCTET_STRING *os = NULL;
980 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
981 EVP_PKEY_CTX *pkctx = NULL;
983 unsigned char mval[EVP_MAX_MD_SIZE];
987 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
990 /* If we have any signed attributes look for messageDigest value */
991 if (CMS_signed_get_attr_count(si) >= 0) {
992 os = CMS_signed_get0_data_by_OBJ(si,
993 OBJ_nid2obj(NID_pkcs9_messageDigest),
994 -3, V_ASN1_OCTET_STRING);
996 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
1001 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
1004 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
1005 ERR_raise(ERR_LIB_CMS, CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
1009 /* If messageDigest found compare it */
1012 if (mlen != (unsigned int)os->length) {
1013 ERR_raise(ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
1017 if (memcmp(mval, os->data, mlen)) {
1018 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
1023 const EVP_MD *md = EVP_MD_CTX_get0_md(mctx);
1024 const CMS_CTX *ctx = si->cms_ctx;
1026 pkctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
1028 ossl_cms_ctx_get0_propq(ctx));
1031 if (EVP_PKEY_verify_init(pkctx) <= 0)
1033 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
1036 if (!cms_sd_asn1_ctrl(si, 1))
1038 r = EVP_PKEY_verify(pkctx, si->signature->data,
1039 si->signature->length, mval, mlen);
1041 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
1047 EVP_PKEY_CTX_free(pkctx);
1048 EVP_MD_CTX_free(mctx);
1053 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
1055 unsigned char *smder = NULL;
1058 smderlen = i2d_X509_ALGORS(algs, &smder);
1061 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
1062 V_ASN1_SEQUENCE, smder, smderlen);
1063 OPENSSL_free(smder);
1067 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
1068 int algnid, int keysize)
1071 ASN1_INTEGER *key = NULL;
1074 key = ASN1_INTEGER_new();
1075 if (key == NULL || !ASN1_INTEGER_set(key, keysize)) {
1076 ASN1_INTEGER_free(key);
1080 alg = ossl_X509_ALGOR_from_nid(algnid, key != NULL ? V_ASN1_INTEGER :
1083 ASN1_INTEGER_free(key);
1088 *algs = sk_X509_ALGOR_new_null();
1089 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
1090 X509_ALGOR_free(alg);
1096 /* Check to see if a cipher exists and if so add S/MIME capabilities */
1098 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1100 if (EVP_get_cipherbynid(nid))
1101 return CMS_add_simple_smimecap(sk, nid, arg);
1105 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1107 if (EVP_get_digestbynid(nid))
1108 return CMS_add_simple_smimecap(sk, nid, arg);
1112 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
1114 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
1115 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
1116 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
1117 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
1118 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
1119 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
1120 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
1121 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
1122 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
1123 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
1124 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
1125 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))