2 * Copyright 2008-2023 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_ASN1_LIB);
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 */
56 int CMS_SignedData_init(CMS_ContentInfo *cms)
58 if (cms_signed_data_init(cms))
64 /* Check structures and fixup version numbers (if necessary) */
65 static void cms_sd_set_version(CMS_SignedData *sd)
68 CMS_CertificateChoices *cch;
69 CMS_RevocationInfoChoice *rch;
72 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
73 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
74 if (cch->type == CMS_CERTCHOICE_OTHER) {
77 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
80 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
86 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
87 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
88 if (rch->type == CMS_REVCHOICE_OTHER) {
94 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
98 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
99 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
100 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
105 } else if (si->version < 1) {
116 * RFC 5652 Section 11.1 Content Type
117 * The content-type attribute within signed-data MUST
118 * 1) be present if there are signed attributes
119 * 2) match the content type in the signed-data,
120 * 3) be a signed attribute.
121 * 4) not have more than one copy of the attribute.
123 * Note that since the CMS_SignerInfo_sign() always adds the "signing time"
124 * attribute, the content type attribute MUST be added also.
125 * Assumptions: This assumes that the attribute does not already exist.
127 static int cms_set_si_contentType_attr(CMS_ContentInfo *cms, CMS_SignerInfo *si)
129 ASN1_OBJECT *ctype = cms->d.signedData->encapContentInfo->eContentType;
131 /* Add the contentType attribute */
132 return CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
133 V_ASN1_OBJECT, ctype, -1) > 0;
136 /* Copy an existing messageDigest value */
137 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
139 STACK_OF(CMS_SignerInfo) *sinfos;
140 CMS_SignerInfo *sitmp;
143 sinfos = CMS_get0_SignerInfos(cms);
144 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
145 ASN1_OCTET_STRING *messageDigest;
147 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
150 if (CMS_signed_get_attr_count(sitmp) < 0)
152 if (OBJ_cmp(si->digestAlgorithm->algorithm,
153 sitmp->digestAlgorithm->algorithm))
155 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
157 (NID_pkcs9_messageDigest),
158 -3, V_ASN1_OCTET_STRING);
159 if (!messageDigest) {
160 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
164 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
171 ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_DIGEST);
175 int ossl_cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert,
176 int type, const CMS_CTX *ctx)
179 case CMS_SIGNERINFO_ISSUER_SERIAL:
180 if (!ossl_cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
184 case CMS_SIGNERINFO_KEYIDENTIFIER:
185 if (!ossl_cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
190 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_ID);
199 int ossl_cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
200 ASN1_OCTET_STRING **keyid,
204 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
206 *issuer = sid->d.issuerAndSerialNumber->issuer;
208 *sno = sid->d.issuerAndSerialNumber->serialNumber;
209 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
211 *keyid = sid->d.subjectKeyIdentifier;
218 int ossl_cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
220 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
221 return ossl_cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
222 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
223 return ossl_cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
228 /* Method to map any, incl. provider-implemented PKEY types to OIDs */
229 /* (EC)DSA and all provider-delivered signatures implementation is the same */
230 static int cms_generic_sign(CMS_SignerInfo *si, int verify)
232 if (!ossl_assert(verify == 0 || verify == 1))
236 EVP_PKEY *pkey = si->pkey;
237 int snid, hnid, pknid = EVP_PKEY_get_id(pkey);
238 X509_ALGOR *alg1, *alg2;
240 CMS_SignerInfo_get0_algs(si, NULL, NULL, &alg1, &alg2);
241 if (alg1 == NULL || alg1->algorithm == NULL)
243 hnid = OBJ_obj2nid(alg1->algorithm);
244 if (hnid == NID_undef)
246 if (pknid <= 0) { /* check whether a provider registered a NID */
247 const char *typename = EVP_PKEY_get0_type_name(pkey);
249 if (typename != NULL)
250 pknid = OBJ_txt2nid(typename);
252 if (!OBJ_find_sigid_by_algs(&snid, hnid, pknid))
254 return X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, NULL);
259 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
261 EVP_PKEY *pkey = si->pkey;
264 if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC"))
265 return cms_generic_sign(si, cmd) > 0;
266 else if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
267 return ossl_cms_rsa_sign(si, cmd) > 0;
269 /* Now give engines, providers, etc a chance to handle this */
270 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
271 return cms_generic_sign(si, cmd) > 0;
272 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
274 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
278 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_FAILURE);
284 /* Add SigningCertificate signed attribute to the signer info. */
285 static int ossl_cms_add1_signing_cert(CMS_SignerInfo *si,
286 const ESS_SIGNING_CERT *sc)
288 ASN1_STRING *seq = NULL;
289 unsigned char *p, *pp = NULL;
290 int ret, len = i2d_ESS_SIGNING_CERT(sc, NULL);
292 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
296 i2d_ESS_SIGNING_CERT(sc, &p);
297 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
298 ASN1_STRING_free(seq);
303 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
304 V_ASN1_SEQUENCE, seq, -1);
305 ASN1_STRING_free(seq);
309 /* Add SigningCertificateV2 signed attribute to the signer info. */
310 static int ossl_cms_add1_signing_cert_v2(CMS_SignerInfo *si,
311 const ESS_SIGNING_CERT_V2 *sc)
313 ASN1_STRING *seq = NULL;
314 unsigned char *p, *pp = NULL;
315 int ret, len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
317 if (len <= 0 || (pp = OPENSSL_malloc(len)) == NULL)
321 i2d_ESS_SIGNING_CERT_V2(sc, &p);
322 if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) {
323 ASN1_STRING_free(seq);
328 ret = CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
329 V_ASN1_SEQUENCE, seq, -1);
330 ASN1_STRING_free(seq);
334 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
335 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
339 CMS_SignerInfo *si = NULL;
342 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
344 if (!X509_check_private_key(signer, pk)) {
345 ERR_raise(ERR_LIB_CMS, CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
348 sd = cms_signed_data_init(cms);
351 si = M_ASN1_new_of(CMS_SignerInfo);
353 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
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_EVP_LIB);
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) {
390 ERR_raise_data(ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST,
391 "pkey nid=%d", EVP_PKEY_get_id(pk));
394 md = EVP_get_digestbynid(def_nid);
396 ERR_raise_data(ERR_LIB_CMS, CMS_R_NO_DEFAULT_DIGEST,
397 "default md nid=%d", def_nid);
402 X509_ALGOR_set_md(si->digestAlgorithm, md);
404 /* See if digest is present in digestAlgorithms */
405 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
406 const ASN1_OBJECT *aoid;
407 char name[OSSL_MAX_NAME_SIZE];
409 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
410 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
411 OBJ_obj2txt(name, sizeof(name), aoid, 0);
412 if (EVP_MD_is_a(md, name))
416 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
417 if ((alg = X509_ALGOR_new()) == NULL) {
418 ERR_raise(ERR_LIB_CMS, ERR_R_ASN1_LIB);
421 X509_ALGOR_set_md(alg, md);
422 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
423 X509_ALGOR_free(alg);
424 ERR_raise(ERR_LIB_CMS, ERR_R_CRYPTO_LIB);
429 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) {
430 ERR_raise_data(ERR_LIB_CMS, CMS_R_UNSUPPORTED_SIGNATURE_ALGORITHM,
431 "pkey nid=%d", EVP_PKEY_get_id(pk));
434 if (!(flags & CMS_NOATTR)) {
436 * Initialize signed attributes structure so other attributes
437 * such as signing time etc are added later even if we add none here.
439 if (!si->signedAttrs) {
440 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
441 if (!si->signedAttrs) {
442 ERR_raise(ERR_LIB_CMS, ERR_R_CRYPTO_LIB);
447 if (!(flags & CMS_NOSMIMECAP)) {
448 STACK_OF(X509_ALGOR) *smcap = NULL;
450 i = CMS_add_standard_smimecap(&smcap);
452 i = CMS_add_smimecap(si, smcap);
453 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
455 ERR_raise(ERR_LIB_CMS, ERR_R_CMS_LIB);
459 if (flags & CMS_CADES) {
460 ESS_SIGNING_CERT *sc = NULL;
461 ESS_SIGNING_CERT_V2 *sc2 = NULL;
464 if (md == NULL || EVP_MD_is_a(md, SN_sha1)) {
465 if ((sc = OSSL_ESS_signing_cert_new_init(signer,
468 add_sc = ossl_cms_add1_signing_cert(si, sc);
469 ESS_SIGNING_CERT_free(sc);
471 if ((sc2 = OSSL_ESS_signing_cert_v2_new_init(md, signer,
474 add_sc = ossl_cms_add1_signing_cert_v2(si, sc2);
475 ESS_SIGNING_CERT_V2_free(sc2);
480 if (flags & CMS_REUSE_DIGEST) {
481 if (!cms_copy_messageDigest(cms, si))
483 if (!cms_set_si_contentType_attr(cms, si))
485 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
486 !CMS_SignerInfo_sign(si))
491 if (!(flags & CMS_NOCERTS)) {
492 /* NB ignore -1 return for duplicate cert */
493 if (!CMS_add1_cert(cms, signer)) {
494 ERR_raise(ERR_LIB_CMS, ERR_R_CMS_LIB);
499 if (flags & CMS_KEY_PARAM) {
500 if (flags & CMS_NOATTR) {
501 si->pctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
503 ossl_cms_ctx_get0_propq(ctx));
504 if (si->pctx == NULL)
506 if (EVP_PKEY_sign_init(si->pctx) <= 0)
508 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
510 } else if (EVP_DigestSignInit_ex(si->mctx, &si->pctx,
511 EVP_MD_get0_name(md),
512 ossl_cms_ctx_get0_libctx(ctx),
513 ossl_cms_ctx_get0_propq(ctx),
519 if (sd->signerInfos == NULL)
520 sd->signerInfos = sk_CMS_SignerInfo_new_null();
521 if (sd->signerInfos == NULL || !sk_CMS_SignerInfo_push(sd->signerInfos, si)) {
522 ERR_raise(ERR_LIB_CMS, ERR_R_CRYPTO_LIB);
529 M_ASN1_free_of(si, CMS_SignerInfo);
534 void ossl_cms_SignerInfos_set_cmsctx(CMS_ContentInfo *cms)
538 STACK_OF(CMS_SignerInfo) *sinfos;
539 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
542 sinfos = CMS_get0_SignerInfos(cms);
543 ERR_pop_to_mark(); /* removes error in case sinfos == NULL */
545 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
546 si = sk_CMS_SignerInfo_value(sinfos, i);
552 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
560 tt = X509_gmtime_adj(NULL, 0);
563 ERR_raise(ERR_LIB_CMS, ERR_R_X509_LIB);
567 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
568 tt->type, tt, -1) <= 0) {
569 ERR_raise(ERR_LIB_CMS, ERR_R_CMS_LIB);
582 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
587 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
592 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
594 CMS_SignedData *sd = cms_get0_signed(cms);
596 return sd != NULL ? sd->signerInfos : NULL;
599 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
601 STACK_OF(X509) *signers = NULL;
602 STACK_OF(CMS_SignerInfo) *sinfos;
606 sinfos = CMS_get0_SignerInfos(cms);
607 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
608 si = sk_CMS_SignerInfo_value(sinfos, i);
609 if (si->signer != NULL) {
610 if (!ossl_x509_add_cert_new(&signers, si->signer,
611 X509_ADD_FLAG_DEFAULT)) {
612 sk_X509_free(signers);
620 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
622 if (signer != NULL) {
624 EVP_PKEY_free(si->pkey);
625 si->pkey = X509_get_pubkey(signer);
627 X509_free(si->signer);
631 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
632 ASN1_OCTET_STRING **keyid,
633 X509_NAME **issuer, ASN1_INTEGER **sno)
635 return ossl_cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
638 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
640 return ossl_cms_SignerIdentifier_cert_cmp(si->sid, cert);
643 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
648 CMS_CertificateChoices *cch;
649 STACK_OF(CMS_CertificateChoices) *certs;
654 sd = cms_get0_signed(cms);
657 certs = sd->certificates;
658 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
659 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
660 if (si->signer != NULL)
663 for (j = 0; j < sk_X509_num(scerts); j++) {
664 x = sk_X509_value(scerts, j);
665 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
666 CMS_SignerInfo_set1_signer_cert(si, x);
672 if (si->signer != NULL || (flags & CMS_NOINTERN))
675 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
676 cch = sk_CMS_CertificateChoices_value(certs, j);
677 if (cch->type != CMS_CERTCHOICE_CERT)
679 x = cch->d.certificate;
680 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
681 CMS_SignerInfo_set1_signer_cert(si, x);
690 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
691 X509 **signer, X509_ALGOR **pdig,
697 *signer = si->signer;
699 *pdig = si->digestAlgorithm;
701 *psig = si->signatureAlgorithm;
704 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
706 return si->signature;
709 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
710 CMS_SignerInfo *si, BIO *chain,
711 const unsigned char *md,
714 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
716 EVP_PKEY_CTX *pctx = NULL;
717 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
720 ERR_raise(ERR_LIB_CMS, ERR_R_CMS_LIB);
724 if (si->pkey == NULL) {
725 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY);
729 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
731 /* Set SignerInfo algorithm details if we used custom parameter */
732 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
736 * If any signed attributes calculate and add messageDigest attribute
738 if (CMS_signed_get_attr_count(si) >= 0) {
739 unsigned char computed_md[EVP_MAX_MD_SIZE];
742 if (!EVP_DigestFinal_ex(mctx, computed_md, &mdlen))
746 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
747 V_ASN1_OCTET_STRING, md, mdlen))
749 /* Copy content type across */
750 if (!cms_set_si_contentType_attr(cms, si))
753 if (!CMS_SignerInfo_sign(si))
755 } else if (si->pctx) {
758 unsigned char computed_md[EVP_MAX_MD_SIZE];
762 if (!EVP_DigestFinal_ex(mctx, computed_md, &mdlen))
766 siglen = EVP_PKEY_get_size(si->pkey);
767 if (siglen == 0 || (sig = OPENSSL_malloc(siglen)) == NULL)
769 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
773 ASN1_STRING_set0(si->signature, sig, siglen);
779 ERR_raise(ERR_LIB_CMS, CMS_R_OPERATION_UNSUPPORTED);
782 siglen = EVP_PKEY_get_size(si->pkey);
783 if (siglen == 0 || (sig = OPENSSL_malloc(siglen)) == NULL)
785 if (!EVP_SignFinal_ex(mctx, sig, &siglen, si->pkey,
786 ossl_cms_ctx_get0_libctx(ctx),
787 ossl_cms_ctx_get0_propq(ctx))) {
788 ERR_raise(ERR_LIB_CMS, CMS_R_SIGNFINAL_ERROR);
792 ASN1_STRING_set0(si->signature, sig, siglen);
798 EVP_MD_CTX_free(mctx);
799 EVP_PKEY_CTX_free(pctx);
804 int ossl_cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain,
805 const unsigned char *precomp_md,
806 unsigned int precomp_mdlen)
808 STACK_OF(CMS_SignerInfo) *sinfos;
812 sinfos = CMS_get0_SignerInfos(cms);
813 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
814 si = sk_CMS_SignerInfo_value(sinfos, i);
815 if (!cms_SignerInfo_content_sign(cms, si, chain,
816 precomp_md, precomp_mdlen))
819 cms->d.signedData->encapContentInfo->partial = 0;
823 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
825 EVP_MD_CTX *mctx = si->mctx;
826 EVP_PKEY_CTX *pctx = NULL;
827 unsigned char *abuf = NULL;
830 const CMS_CTX *ctx = si->cms_ctx;
831 char md_name[OSSL_MAX_NAME_SIZE];
833 if (OBJ_obj2txt(md_name, sizeof(md_name),
834 si->digestAlgorithm->algorithm, 0) <= 0)
837 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
838 if (!cms_add1_signingTime(si, NULL))
842 if (!ossl_cms_si_check_attributes(si))
848 EVP_MD_CTX_reset(mctx);
849 if (EVP_DigestSignInit_ex(mctx, &pctx, md_name,
850 ossl_cms_ctx_get0_libctx(ctx),
851 ossl_cms_ctx_get0_propq(ctx), si->pkey,
857 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
858 ASN1_ITEM_rptr(CMS_Attributes_Sign));
861 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
863 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
866 abuf = OPENSSL_malloc(siglen);
869 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
872 EVP_MD_CTX_reset(mctx);
874 ASN1_STRING_set0(si->signature, abuf, siglen);
880 EVP_MD_CTX_reset(mctx);
884 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
886 EVP_MD_CTX *mctx = NULL;
887 unsigned char *abuf = NULL;
889 char name[OSSL_MAX_NAME_SIZE];
891 EVP_MD *fetched_md = NULL;
892 const CMS_CTX *ctx = si->cms_ctx;
893 OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
894 const char *propq = ossl_cms_ctx_get0_propq(ctx);
896 if (si->pkey == NULL) {
897 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PUBLIC_KEY);
901 if (!ossl_cms_si_check_attributes(si))
904 OBJ_obj2txt(name, sizeof(name), si->digestAlgorithm->algorithm, 0);
906 (void)ERR_set_mark();
907 fetched_md = EVP_MD_fetch(libctx, name, propq);
909 if (fetched_md != NULL)
912 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
914 (void)ERR_clear_last_mark();
915 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
918 (void)ERR_pop_to_mark();
920 if (si->mctx == NULL && (si->mctx = EVP_MD_CTX_new()) == NULL) {
921 ERR_raise(ERR_LIB_CMS, ERR_R_EVP_LIB);
925 if (EVP_DigestVerifyInit_ex(mctx, &si->pctx, EVP_MD_get0_name(md), libctx,
926 propq, si->pkey, NULL) <= 0)
929 if (!cms_sd_asn1_ctrl(si, 1))
932 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
933 ASN1_ITEM_rptr(CMS_Attributes_Verify));
934 if (abuf == NULL || alen < 0)
936 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
942 r = EVP_DigestVerifyFinal(mctx,
943 si->signature->data, si->signature->length);
945 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
947 EVP_MD_free(fetched_md);
948 EVP_MD_CTX_reset(mctx);
952 /* Create a chain of digest BIOs from a CMS ContentInfo */
953 BIO *ossl_cms_SignedData_init_bio(CMS_ContentInfo *cms)
959 sd = cms_get0_signed(cms);
962 if (cms->d.signedData->encapContentInfo->partial)
963 cms_sd_set_version(sd);
964 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
965 X509_ALGOR *digestAlgorithm;
968 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
969 mdbio = ossl_cms_DigestAlgorithm_init_bio(digestAlgorithm,
970 ossl_cms_get0_cmsctx(cms));
974 BIO_push(chain, mdbio);
984 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
986 ASN1_OCTET_STRING *os = NULL;
987 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
988 EVP_PKEY_CTX *pkctx = NULL;
990 unsigned char mval[EVP_MAX_MD_SIZE];
994 ERR_raise(ERR_LIB_CMS, ERR_R_EVP_LIB);
997 /* If we have any signed attributes look for messageDigest value */
998 if (CMS_signed_get_attr_count(si) >= 0) {
999 os = CMS_signed_get0_data_by_OBJ(si,
1000 OBJ_nid2obj(NID_pkcs9_messageDigest),
1001 -3, V_ASN1_OCTET_STRING);
1003 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
1008 if (!ossl_cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
1011 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
1012 ERR_raise(ERR_LIB_CMS, CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
1016 /* If messageDigest found compare it */
1018 if (mlen != (unsigned int)os->length) {
1019 ERR_raise(ERR_LIB_CMS, CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
1023 if (memcmp(mval, os->data, mlen)) {
1024 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
1030 const EVP_MD *md = EVP_MD_CTX_get0_md(mctx);
1031 const CMS_CTX *ctx = si->cms_ctx;
1033 pkctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
1035 ossl_cms_ctx_get0_propq(ctx));
1038 if (EVP_PKEY_verify_init(pkctx) <= 0)
1040 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
1043 if (!cms_sd_asn1_ctrl(si, 1))
1045 r = EVP_PKEY_verify(pkctx, si->signature->data,
1046 si->signature->length, mval, mlen);
1048 ERR_raise(ERR_LIB_CMS, CMS_R_VERIFICATION_FAILURE);
1054 EVP_PKEY_CTX_free(pkctx);
1055 EVP_MD_CTX_free(mctx);
1060 BIO *CMS_SignedData_verify(CMS_SignedData *sd, BIO *detached_data,
1061 STACK_OF(X509) *scerts, X509_STORE *store,
1062 STACK_OF(X509) *extra, STACK_OF(X509_CRL) *crls,
1064 OSSL_LIB_CTX *libctx, const char *propq)
1066 CMS_ContentInfo *ci;
1071 ERR_raise(ERR_LIB_CMS, ERR_R_PASSED_NULL_PARAMETER);
1075 if ((ci = CMS_ContentInfo_new_ex(libctx, propq)) == NULL)
1077 if ((bio = BIO_new(BIO_s_mem())) == NULL)
1079 ci->contentType = OBJ_nid2obj(NID_pkcs7_signed);
1080 ci->d.signedData = sd;
1082 for (i = 0; i < sk_X509_num(extra); i++)
1083 if (!CMS_add1_cert(ci, sk_X509_value(extra, i)))
1085 for (i = 0; i < sk_X509_CRL_num(crls); i++)
1086 if (!CMS_add1_crl(ci, sk_X509_CRL_value(crls, i)))
1088 res = CMS_verify(ci, scerts, store, detached_data, bio, flags);
1092 ci->d.signedData = NULL; /* do not indirectly free |sd| */
1093 CMS_ContentInfo_free(ci);
1101 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
1103 unsigned char *smder = NULL;
1106 smderlen = i2d_X509_ALGORS(algs, &smder);
1109 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
1110 V_ASN1_SEQUENCE, smder, smderlen);
1111 OPENSSL_free(smder);
1115 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
1116 int algnid, int keysize)
1119 ASN1_INTEGER *key = NULL;
1122 key = ASN1_INTEGER_new();
1123 if (key == NULL || !ASN1_INTEGER_set(key, keysize)) {
1124 ASN1_INTEGER_free(key);
1128 alg = ossl_X509_ALGOR_from_nid(algnid, key != NULL ? V_ASN1_INTEGER :
1131 ASN1_INTEGER_free(key);
1136 *algs = sk_X509_ALGOR_new_null();
1137 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
1138 X509_ALGOR_free(alg);
1144 /* Check to see if a cipher exists and if so add S/MIME capabilities */
1145 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1147 if (EVP_get_cipherbynid(nid))
1148 return CMS_add_simple_smimecap(sk, nid, arg);
1152 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
1154 if (EVP_get_digestbynid(nid))
1155 return CMS_add_simple_smimecap(sk, nid, arg);
1159 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
1161 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
1162 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
1163 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
1164 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
1165 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
1166 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
1167 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
1168 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
1169 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
1170 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
1171 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
1172 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))