2 * Copyright 2008-2021 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 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 ossl_cms_ecdsa_dsa_sign(si, cmd);
237 else if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
238 return ossl_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 /* Add SigningCertificate signed attribute to the signer info. */
256 static int ossl_cms_add1_signing_cert(CMS_SignerInfo *si,
257 const ESS_SIGNING_CERT *sc)
259 ASN1_STRING *seq = NULL;
260 unsigned char *p, *pp = NULL;
261 int ret, len = i2d_ESS_SIGNING_CERT(sc, NULL);
263 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
267 i2d_ESS_SIGNING_CERT(sc, &p);
268 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
269 ASN1_STRING_free(seq);
274 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
275 V_ASN1_SEQUENCE, seq, -1);
276 ASN1_STRING_free(seq);
280 /* Add SigningCertificateV2 signed attribute to the signer info. */
281 static int ossl_cms_add1_signing_cert_v2(CMS_SignerInfo *si,
282 const ESS_SIGNING_CERT_V2 *sc)
284 ASN1_STRING *seq = NULL;
285 unsigned char *p, *pp = NULL;
286 int ret, len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
288 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
292 i2d_ESS_SIGNING_CERT_V2(sc, &p);
293 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
294 ASN1_STRING_free(seq);
299 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
300 V_ASN1_SEQUENCE, seq, -1);
301 ASN1_STRING_free(seq);
305 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
306 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
310 CMS_SignerInfo *si = NULL;
313 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
315 if (!X509_check_private_key(signer, pk)) {
316 ERR_raise(ERR_LIB_CMS, CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
319 sd = cms_signed_data_init(cms);
322 si = M_ASN1_new_of(CMS_SignerInfo);
325 /* Call for side-effect of computing hash and caching extensions */
326 X509_check_purpose(signer, -1, -1);
334 si->mctx = EVP_MD_CTX_new();
337 if (si->mctx == NULL) {
338 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
342 if (flags & CMS_USE_KEYID) {
346 type = CMS_SIGNERINFO_KEYIDENTIFIER;
348 type = CMS_SIGNERINFO_ISSUER_SERIAL;
352 if (!ossl_cms_set1_SignerIdentifier(si->sid, signer, type, ctx))
357 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
359 md = EVP_get_digestbynid(def_nid);
361 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST);
367 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DIGEST_SET);
372 ERR_raise(ERR_LIB_CMS, CMS_R_NO_DIGEST_SET);
376 X509_ALGOR_set_md(si->digestAlgorithm, md);
378 /* See if digest is present in digestAlgorithms */
379 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
380 const ASN1_OBJECT *aoid;
381 char name[OSSL_MAX_NAME_SIZE];
383 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
384 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
385 OBJ_obj2txt(name, sizeof(name), aoid, 0);
386 if (EVP_MD_is_a(md, name))
390 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
391 alg = X509_ALGOR_new();
394 X509_ALGOR_set_md(alg, md);
395 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
396 X509_ALGOR_free(alg);
401 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
403 if (!(flags & CMS_NOATTR)) {
405 * Initialize signed attributes structure so other attributes
406 * such as signing time etc are added later even if we add none here.
408 if (!si->signedAttrs) {
409 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
410 if (!si->signedAttrs)
414 if (!(flags & CMS_NOSMIMECAP)) {
415 STACK_OF(X509_ALGOR) *smcap = NULL;
416 i = CMS_add_standard_smimecap(&smcap);
418 i = CMS_add_smimecap(si, smcap);
419 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
423 if (flags & CMS_CADES) {
424 ESS_SIGNING_CERT *sc = NULL;
425 ESS_SIGNING_CERT_V2 *sc2 = NULL;
428 if (md == NULL || EVP_MD_is_a(md, SN_sha1)) {
429 if ((sc = OSSL_ESS_signing_cert_new_init(signer,
432 add_sc = ossl_cms_add1_signing_cert(si, sc);
433 ESS_SIGNING_CERT_free(sc);
435 if ((sc2 = OSSL_ESS_signing_cert_v2_new_init(md, signer,
438 add_sc = ossl_cms_add1_signing_cert_v2(si, sc2);
439 ESS_SIGNING_CERT_V2_free(sc2);
444 if (flags & CMS_REUSE_DIGEST) {
445 if (!cms_copy_messageDigest(cms, si))
447 if (!cms_set_si_contentType_attr(cms, si))
449 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
450 !CMS_SignerInfo_sign(si))
455 if (!(flags & CMS_NOCERTS)) {
456 /* NB ignore -1 return for duplicate cert */
457 if (!CMS_add1_cert(cms, signer))
461 if (flags & CMS_KEY_PARAM) {
462 if (flags & CMS_NOATTR) {
463 si->pctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
465 ossl_cms_ctx_get0_propq(ctx));
466 if (si->pctx == NULL)
468 if (EVP_PKEY_sign_init(si->pctx) <= 0)
470 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
472 } else if (EVP_DigestSignInit_ex(si->mctx, &si->pctx,
473 EVP_MD_get0_name(md),
474 ossl_cms_ctx_get0_libctx(ctx),
475 ossl_cms_ctx_get0_propq(ctx),
481 if (!sd->signerInfos)
482 sd->signerInfos = sk_CMS_SignerInfo_new_null();
483 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
489 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
491 M_ASN1_free_of(si, CMS_SignerInfo);
496 void ossl_cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms)
500 STACK_OF(CMS_SignerInfo) *sinfos;
501 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
504 sinfos = CMS_get0_SignerInfos(cms);
505 ERR_pop_to_mark(); /* removes error in case sinfos == NULL */
507 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
508 si = sk_CMS_SignerInfo_value(sinfos, i);
514 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
522 tt = X509_gmtime_adj(NULL, 0);
527 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
528 tt->type, tt, -1) <= 0)
537 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
543 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
548 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
553 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
555 CMS_SignedData *sd = cms_get0_signed(cms);
557 return sd != NULL ? sd->signerInfos : NULL;
560 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
562 STACK_OF(X509) *signers = NULL;
563 STACK_OF(CMS_SignerInfo) *sinfos;
567 sinfos = CMS_get0_SignerInfos(cms);
568 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
569 si = sk_CMS_SignerInfo_value(sinfos, i);
570 if (si->signer != NULL) {
571 if (!ossl_x509_add_cert_new(&signers, si->signer,
572 X509_ADD_FLAG_DEFAULT)) {
573 sk_X509_free(signers);
581 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
583 if (signer != NULL) {
585 EVP_PKEY_free(si->pkey);
586 si->pkey = X509_get_pubkey(signer);
588 X509_free(si->signer);
592 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
593 ASN1_OCTET_STRING **keyid,
594 X509_NAME **issuer, ASN1_INTEGER **sno)
596 return ossl_cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
599 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
601 return ossl_cms_SignerIdentifier_cert_cmp(si->sid, cert);
604 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
609 CMS_CertificateChoices *cch;
610 STACK_OF(CMS_CertificateChoices) *certs;
615 sd = cms_get0_signed(cms);
618 certs = sd->certificates;
619 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
620 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
621 if (si->signer != NULL)
624 for (j = 0; j < sk_X509_num(scerts); j++) {
625 x = sk_X509_value(scerts, j);
626 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
627 CMS_SignerInfo_set1_signer_cert(si, x);
633 if (si->signer != NULL || (flags & CMS_NOINTERN))
636 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
637 cch = sk_CMS_CertificateChoices_value(certs, j);
640 x = cch->d.certificate;
641 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
642 CMS_SignerInfo_set1_signer_cert(si, x);
651 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
652 X509 **signer, X509_ALGOR **pdig,
658 *signer = si->signer;
660 *pdig = si->digestAlgorithm;
662 *psig = si->signatureAlgorithm;
665 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
667 return si->signature;
670 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
671 CMS_SignerInfo *si, BIO *chain)
673 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
675 EVP_PKEY_CTX *pctx = NULL;
676 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
679 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
683 if (si->pkey == NULL) {
684 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY);
688 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
690 /* Set SignerInfo algorithm details if we used custom parameter */
691 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
695 * If any signed attributes calculate and add messageDigest attribute
698 if (CMS_signed_get_attr_count(si) >= 0) {
699 unsigned char md[EVP_MAX_MD_SIZE];
702 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
704 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
705 V_ASN1_OCTET_STRING, md, mdlen))
707 /* Copy content type across */
708 if (!cms_set_si_contentType_attr(cms, si))
711 if (!CMS_SignerInfo_sign(si))
713 } else if (si->pctx) {
716 unsigned char md[EVP_MAX_MD_SIZE];
720 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
722 siglen = EVP_PKEY_get_size(si->pkey);
723 sig = OPENSSL_malloc(siglen);
725 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
728 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
732 ASN1_STRING_set0(si->signature, sig, siglen);
737 sig = OPENSSL_malloc(EVP_PKEY_get_size(si->pkey));
739 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
742 if (!EVP_SignFinal_ex(mctx, sig, &siglen, si->pkey,
743 ossl_cms_ctx_get0_libctx(ctx),
744 ossl_cms_ctx_get0_propq(ctx))) {
745 ERR_raise(ERR_LIB_CMS, CMS_R_SIGNFINAL_ERROR);
749 ASN1_STRING_set0(si->signature, sig, siglen);
755 EVP_MD_CTX_free(mctx);
756 EVP_PKEY_CTX_free(pctx);
761 int ossl_cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
763 STACK_OF(CMS_SignerInfo) *sinfos;
767 sinfos = CMS_get0_SignerInfos(cms);
768 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
769 si = sk_CMS_SignerInfo_value(sinfos, i);
770 if (!cms_SignerInfo_content_sign(cms, si, chain))
773 cms->d.signedData->encapContentInfo->partial = 0;
777 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
779 EVP_MD_CTX *mctx = si->mctx;
780 EVP_PKEY_CTX *pctx = NULL;
781 unsigned char *abuf = NULL;
784 const CMS_CTX *ctx = si->cms_ctx;
785 char md_name[OSSL_MAX_NAME_SIZE];
787 if (!OBJ_obj2txt(md_name, sizeof(md_name),
788 si->digestAlgorithm->algorithm, 0))
791 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
792 if (!cms_add1_signingTime(si, NULL))
796 if (!ossl_cms_si_check_attributes(si))
802 EVP_MD_CTX_reset(mctx);
803 if (EVP_DigestSignInit_ex(mctx, &pctx, md_name,
804 ossl_cms_ctx_get0_libctx(ctx),
805 ossl_cms_ctx_get0_propq(ctx), si->pkey,
811 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
812 ASN1_ITEM_rptr(CMS_Attributes_Sign));
815 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
817 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
820 abuf = OPENSSL_malloc(siglen);
823 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
826 EVP_MD_CTX_reset(mctx);
828 ASN1_STRING_set0(si->signature, abuf, siglen);
834 EVP_MD_CTX_reset(mctx);
838 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
840 EVP_MD_CTX *mctx = NULL;
841 unsigned char *abuf = NULL;
843 char name[OSSL_MAX_NAME_SIZE];
845 EVP_MD *fetched_md = NULL;
846 const CMS_CTX *ctx = si->cms_ctx;
847 OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
848 const char *propq = ossl_cms_ctx_get0_propq(ctx);
850 if (si->pkey == NULL) {
851 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PUBLIC_KEY);
855 if (!ossl_cms_si_check_attributes(si))
858 OBJ_obj2txt(name, sizeof(name), si->digestAlgorithm->algorithm, 0);
860 (void)ERR_set_mark();
861 fetched_md = EVP_MD_fetch(libctx, name, propq);
863 if (fetched_md != NULL)
866 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
868 (void)ERR_clear_last_mark();
869 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
872 (void)ERR_pop_to_mark();
874 if (si->mctx == NULL && (si->mctx = EVP_MD_CTX_new()) == NULL) {
875 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
879 if (EVP_DigestVerifyInit_ex(mctx, &si->pctx, EVP_MD_get0_name(md), libctx,
880 propq, si->pkey, NULL) <= 0)
883 if (!cms_sd_asn1_ctrl(si, 1))
886 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
887 ASN1_ITEM_rptr(CMS_Attributes_Verify));
888 if (abuf == NULL || alen < 0)
890 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
896 r = EVP_DigestVerifyFinal(mctx,
897 si->signature->data, si->signature->length);
899 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
901 EVP_MD_free(fetched_md);
902 EVP_MD_CTX_reset(mctx);
906 /* Create a chain of digest BIOs from a CMS ContentInfo */
908 BIO *ossl_cms_SignedData_init_bio(CMS_ContentInfo *cms)
914 sd = cms_get0_signed(cms);
917 if (cms->d.signedData->encapContentInfo->partial)
918 cms_sd_set_version(sd);
919 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
920 X509_ALGOR *digestAlgorithm;
923 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
924 mdbio = ossl_cms_DigestAlgorithm_init_bio(digestAlgorithm,
925 ossl_cms_get0_cmsctx(cms));
929 BIO_push(chain, mdbio);
939 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
941 ASN1_OCTET_STRING *os = NULL;
942 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
943 EVP_PKEY_CTX *pkctx = NULL;
945 unsigned char mval[EVP_MAX_MD_SIZE];
949 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
952 /* If we have any signed attributes look for messageDigest value */
953 if (CMS_signed_get_attr_count(si) >= 0) {
954 os = CMS_signed_get0_data_by_OBJ(si,
955 OBJ_nid2obj(NID_pkcs9_messageDigest),
956 -3, V_ASN1_OCTET_STRING);
958 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
963 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
966 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
967 ERR_raise(ERR_LIB_CMS, CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
971 /* If messageDigest found compare it */
974 if (mlen != (unsigned int)os->length) {
975 ERR_raise(ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
979 if (memcmp(mval, os->data, mlen)) {
980 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
985 const EVP_MD *md = EVP_MD_CTX_get0_md(mctx);
986 const CMS_CTX *ctx = si->cms_ctx;
988 pkctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
990 ossl_cms_ctx_get0_propq(ctx));
993 if (EVP_PKEY_verify_init(pkctx) <= 0)
995 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
998 if (!cms_sd_asn1_ctrl(si, 1))
1000 r = EVP_PKEY_verify(pkctx, si->signature->data,
1001 si->signature->length, mval, mlen);
1003 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
1009 EVP_PKEY_CTX_free(pkctx);
1010 EVP_MD_CTX_free(mctx);
1015 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
1017 unsigned char *smder = NULL;
1020 smderlen = i2d_X509_ALGORS(algs, &smder);
1023 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
1024 V_ASN1_SEQUENCE, smder, smderlen);
1025 OPENSSL_free(smder);
1029 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
1030 int algnid, int keysize)
1033 ASN1_INTEGER *key = NULL;
1036 key = ASN1_INTEGER_new();
1037 if (key == NULL || !ASN1_INTEGER_set(key, keysize)) {
1038 ASN1_INTEGER_free(key);
1042 alg = X509_ALGOR_new();
1044 ASN1_INTEGER_free(key);
1048 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
1049 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
1051 *algs = sk_X509_ALGOR_new_null();
1052 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
1053 X509_ALGOR_free(alg);
1059 /* Check to see if a cipher exists and if so add S/MIME capabilities */
1061 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1063 if (EVP_get_cipherbynid(nid))
1064 return CMS_add_simple_smimecap(sk, nid, arg);
1068 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1070 if (EVP_get_digestbynid(nid))
1071 return CMS_add_simple_smimecap(sk, nid, arg);
1075 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
1077 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
1078 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
1079 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
1080 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
1081 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
1082 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
1083 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
1084 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
1085 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
1086 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
1087 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
1088 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))