2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
54 #include "internal/cryptlib.h"
55 #include <openssl/asn1t.h>
56 #include <openssl/pem.h>
57 #include <openssl/x509.h>
58 #include <openssl/x509v3.h>
59 #include <openssl/err.h>
60 #include <openssl/cms.h>
62 #include "internal/asn1_int.h"
63 #include "internal/evp_int.h"
65 /* CMS SignedData Utilities */
67 static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms)
69 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) {
70 CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA);
73 return cms->d.signedData;
76 static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms)
78 if (cms->d.other == NULL) {
79 cms->d.signedData = M_ASN1_new_of(CMS_SignedData);
80 if (!cms->d.signedData) {
81 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE);
84 cms->d.signedData->version = 1;
85 cms->d.signedData->encapContentInfo->eContentType =
86 OBJ_nid2obj(NID_pkcs7_data);
87 cms->d.signedData->encapContentInfo->partial = 1;
88 ASN1_OBJECT_free(cms->contentType);
89 cms->contentType = OBJ_nid2obj(NID_pkcs7_signed);
90 return cms->d.signedData;
92 return cms_get0_signed(cms);
95 /* Just initialise SignedData e.g. for certs only structure */
97 int CMS_SignedData_init(CMS_ContentInfo *cms)
99 if (cms_signed_data_init(cms))
105 /* Check structures and fixup version numbers (if necessary) */
107 static void cms_sd_set_version(CMS_SignedData *sd)
110 CMS_CertificateChoices *cch;
111 CMS_RevocationInfoChoice *rch;
114 for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) {
115 cch = sk_CMS_CertificateChoices_value(sd->certificates, i);
116 if (cch->type == CMS_CERTCHOICE_OTHER) {
119 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
122 } else if (cch->type == CMS_CERTCHOICE_V1ACERT) {
128 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) {
129 rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i);
130 if (rch->type == CMS_REVCHOICE_OTHER) {
136 if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data)
137 && (sd->version < 3))
140 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
141 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
142 if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
147 } else if (si->version < 1)
156 /* Copy an existing messageDigest value */
158 static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si)
160 STACK_OF(CMS_SignerInfo) *sinfos;
161 CMS_SignerInfo *sitmp;
163 sinfos = CMS_get0_SignerInfos(cms);
164 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
165 ASN1_OCTET_STRING *messageDigest;
166 sitmp = sk_CMS_SignerInfo_value(sinfos, i);
169 if (CMS_signed_get_attr_count(sitmp) < 0)
171 if (OBJ_cmp(si->digestAlgorithm->algorithm,
172 sitmp->digestAlgorithm->algorithm))
174 messageDigest = CMS_signed_get0_data_by_OBJ(sitmp,
176 (NID_pkcs9_messageDigest),
177 -3, V_ASN1_OCTET_STRING);
178 if (!messageDigest) {
179 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST,
180 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
184 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
191 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST);
195 int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type)
198 case CMS_SIGNERINFO_ISSUER_SERIAL:
199 if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert))
203 case CMS_SIGNERINFO_KEYIDENTIFIER:
204 if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert))
209 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID);
218 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid,
219 ASN1_OCTET_STRING **keyid,
223 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) {
225 *issuer = sid->d.issuerAndSerialNumber->issuer;
227 *sno = sid->d.issuerAndSerialNumber->serialNumber;
228 } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) {
230 *keyid = sid->d.subjectKeyIdentifier;
236 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert)
238 if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL)
239 return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert);
240 else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER)
241 return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert);
246 static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
248 EVP_PKEY *pkey = si->pkey;
250 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
252 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si);
254 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
258 CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE);
264 CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
265 X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
269 CMS_SignerInfo *si = NULL;
272 if (!X509_check_private_key(signer, pk)) {
273 CMSerr(CMS_F_CMS_ADD1_SIGNER,
274 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
277 sd = cms_signed_data_init(cms);
280 si = M_ASN1_new_of(CMS_SignerInfo);
283 /* Call for side-effect of computing hash and caching extensions */
284 X509_check_purpose(signer, -1, -1);
286 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
291 si->mctx = EVP_MD_CTX_new();
294 if (si->mctx == NULL) {
295 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
299 if (flags & CMS_USE_KEYID) {
303 type = CMS_SIGNERINFO_KEYIDENTIFIER;
305 type = CMS_SIGNERINFO_ISSUER_SERIAL;
309 if (!cms_set1_SignerIdentifier(si->sid, signer, type))
314 if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
316 md = EVP_get_digestbynid(def_nid);
318 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
324 CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
328 X509_ALGOR_set_md(si->digestAlgorithm, md);
330 /* See if digest is present in digestAlgorithms */
331 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
333 alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
334 X509_ALGOR_get0(&aoid, NULL, NULL, alg);
335 if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
339 if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
340 alg = X509_ALGOR_new();
343 X509_ALGOR_set_md(alg, md);
344 if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
345 X509_ALGOR_free(alg);
350 if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
352 if (!(flags & CMS_NOATTR)) {
354 * Initialize signed attributes structure so other attributes
355 * such as signing time etc are added later even if we add none here.
357 if (!si->signedAttrs) {
358 si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
359 if (!si->signedAttrs)
363 if (!(flags & CMS_NOSMIMECAP)) {
364 STACK_OF(X509_ALGOR) *smcap = NULL;
365 i = CMS_add_standard_smimecap(&smcap);
367 i = CMS_add_smimecap(si, smcap);
368 sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
372 if (flags & CMS_REUSE_DIGEST) {
373 if (!cms_copy_messageDigest(cms, si))
375 if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
376 !CMS_SignerInfo_sign(si))
381 if (!(flags & CMS_NOCERTS)) {
382 /* NB ignore -1 return for duplicate cert */
383 if (!CMS_add1_cert(cms, signer))
387 if (flags & CMS_KEY_PARAM) {
388 if (flags & CMS_NOATTR) {
389 si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL);
390 if (si->pctx == NULL)
392 if (EVP_PKEY_sign_init(si->pctx) <= 0)
394 if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
396 } else if (EVP_DigestSignInit(si->mctx, &si->pctx, md, NULL, pk) <=
401 if (!sd->signerInfos)
402 sd->signerInfos = sk_CMS_SignerInfo_new_null();
403 if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
409 CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
411 M_ASN1_free_of(si, CMS_SignerInfo);
416 static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t)
423 tt = X509_gmtime_adj(NULL, 0);
428 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime,
429 tt->type, tt, -1) <= 0)
440 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE);
446 EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si)
451 EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si)
456 STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms)
459 sd = cms_get0_signed(cms);
462 return sd->signerInfos;
465 STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms)
467 STACK_OF(X509) *signers = NULL;
468 STACK_OF(CMS_SignerInfo) *sinfos;
471 sinfos = CMS_get0_SignerInfos(cms);
472 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
473 si = sk_CMS_SignerInfo_value(sinfos, i);
476 signers = sk_X509_new_null();
480 if (!sk_X509_push(signers, si->signer)) {
481 sk_X509_free(signers);
489 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer)
493 EVP_PKEY_free(si->pkey);
494 si->pkey = X509_get_pubkey(signer);
496 X509_free(si->signer);
500 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si,
501 ASN1_OCTET_STRING **keyid,
502 X509_NAME **issuer, ASN1_INTEGER **sno)
504 return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno);
507 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert)
509 return cms_SignerIdentifier_cert_cmp(si->sid, cert);
512 int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts,
517 CMS_CertificateChoices *cch;
518 STACK_OF(CMS_CertificateChoices) *certs;
522 sd = cms_get0_signed(cms);
525 certs = sd->certificates;
526 for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) {
527 si = sk_CMS_SignerInfo_value(sd->signerInfos, i);
531 for (j = 0; j < sk_X509_num(scerts); j++) {
532 x = sk_X509_value(scerts, j);
533 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
534 CMS_SignerInfo_set1_signer_cert(si, x);
540 if (si->signer || (flags & CMS_NOINTERN))
543 for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) {
544 cch = sk_CMS_CertificateChoices_value(certs, j);
547 x = cch->d.certificate;
548 if (CMS_SignerInfo_cert_cmp(si, x) == 0) {
549 CMS_SignerInfo_set1_signer_cert(si, x);
558 void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk,
559 X509 **signer, X509_ALGOR **pdig,
565 *signer = si->signer;
567 *pdig = si->digestAlgorithm;
569 *psig = si->signatureAlgorithm;
572 ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
574 return si->signature;
577 static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
578 CMS_SignerInfo *si, BIO *chain)
580 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
582 EVP_PKEY_CTX *pctx = NULL;
585 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
590 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY);
594 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
596 /* Set SignerInfo algorithm details if we used custom parameter */
597 if (si->pctx && !cms_sd_asn1_ctrl(si, 0))
601 * If any signed attributes calculate and add messageDigest attribute
604 if (CMS_signed_get_attr_count(si) >= 0) {
606 cms->d.signedData->encapContentInfo->eContentType;
607 unsigned char md[EVP_MAX_MD_SIZE];
609 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
611 if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest,
612 V_ASN1_OCTET_STRING, md, mdlen))
614 /* Copy content type across */
615 if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType,
616 V_ASN1_OBJECT, ctype, -1) <= 0)
618 if (!CMS_SignerInfo_sign(si))
620 } else if (si->pctx) {
623 unsigned char md[EVP_MAX_MD_SIZE];
626 if (!EVP_DigestFinal_ex(mctx, md, &mdlen))
628 siglen = EVP_PKEY_size(si->pkey);
629 sig = OPENSSL_malloc(siglen);
631 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
634 if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) {
638 ASN1_STRING_set0(si->signature, sig, siglen);
642 sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
644 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE);
647 if (!EVP_SignFinal(mctx, sig, &siglen, si->pkey)) {
648 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR);
652 ASN1_STRING_set0(si->signature, sig, siglen);
658 EVP_MD_CTX_free(mctx);
659 EVP_PKEY_CTX_free(pctx);
664 int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain)
666 STACK_OF(CMS_SignerInfo) *sinfos;
669 sinfos = CMS_get0_SignerInfos(cms);
670 for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
671 si = sk_CMS_SignerInfo_value(sinfos, i);
672 if (!cms_SignerInfo_content_sign(cms, si, chain))
675 cms->d.signedData->encapContentInfo->partial = 0;
679 int CMS_SignerInfo_sign(CMS_SignerInfo *si)
681 EVP_MD_CTX *mctx = si->mctx;
683 unsigned char *abuf = NULL;
686 const EVP_MD *md = NULL;
688 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
692 if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) {
693 if (!cms_add1_signingTime(si, NULL))
700 EVP_MD_CTX_reset(mctx);
701 if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0)
705 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
706 EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) {
707 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
711 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
712 ASN1_ITEM_rptr(CMS_Attributes_Sign));
715 if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0)
717 if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0)
720 abuf = OPENSSL_malloc(siglen);
723 if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0)
726 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN,
727 EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) {
728 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR);
732 EVP_MD_CTX_reset(mctx);
734 ASN1_STRING_set0(si->signature, abuf, siglen);
740 EVP_MD_CTX_reset(mctx);
745 int CMS_SignerInfo_verify(CMS_SignerInfo *si)
747 EVP_MD_CTX *mctx = NULL;
748 unsigned char *abuf = NULL;
750 const EVP_MD *md = NULL;
753 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY);
757 md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
760 if (si->mctx == NULL)
761 si->mctx = EVP_MD_CTX_new();
763 if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0)
766 if (!cms_sd_asn1_ctrl(si, 1))
769 alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf,
770 ASN1_ITEM_rptr(CMS_Attributes_Verify));
773 r = EVP_DigestVerifyUpdate(mctx, abuf, alen);
779 r = EVP_DigestVerifyFinal(mctx,
780 si->signature->data, si->signature->length);
782 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE);
784 EVP_MD_CTX_reset(mctx);
788 /* Create a chain of digest BIOs from a CMS ContentInfo */
790 BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms)
795 sd = cms_get0_signed(cms);
798 if (cms->d.signedData->encapContentInfo->partial)
799 cms_sd_set_version(sd);
800 for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
801 X509_ALGOR *digestAlgorithm;
803 digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
804 mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm);
808 BIO_push(chain, mdbio);
818 int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain)
820 ASN1_OCTET_STRING *os = NULL;
821 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
822 EVP_PKEY_CTX *pkctx = NULL;
824 unsigned char mval[EVP_MAX_MD_SIZE];
828 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, ERR_R_MALLOC_FAILURE);
831 /* If we have any signed attributes look for messageDigest value */
832 if (CMS_signed_get_attr_count(si) >= 0) {
833 os = CMS_signed_get0_data_by_OBJ(si,
834 OBJ_nid2obj(NID_pkcs9_messageDigest),
835 -3, V_ASN1_OCTET_STRING);
837 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
838 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE);
843 if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm))
846 if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) {
847 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
848 CMS_R_UNABLE_TO_FINALIZE_CONTEXT);
852 /* If messageDigest found compare it */
855 if (mlen != (unsigned int)os->length) {
856 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
857 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH);
861 if (memcmp(mval, os->data, mlen)) {
862 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
863 CMS_R_VERIFICATION_FAILURE);
868 const EVP_MD *md = EVP_MD_CTX_md(mctx);
869 pkctx = EVP_PKEY_CTX_new(si->pkey, NULL);
872 if (EVP_PKEY_verify_init(pkctx) <= 0)
874 if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0)
877 if (!cms_sd_asn1_ctrl(si, 1))
879 r = EVP_PKEY_verify(pkctx, si->signature->data,
880 si->signature->length, mval, mlen);
882 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT,
883 CMS_R_VERIFICATION_FAILURE);
889 EVP_PKEY_CTX_free(pkctx);
890 EVP_MD_CTX_free(mctx);
895 int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs)
897 unsigned char *smder = NULL;
899 smderlen = i2d_X509_ALGORS(algs, &smder);
902 r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities,
903 V_ASN1_SEQUENCE, smder, smderlen);
908 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs,
909 int algnid, int keysize)
912 ASN1_INTEGER *key = NULL;
914 key = ASN1_INTEGER_new();
915 if (key == NULL || !ASN1_INTEGER_set(key, keysize))
918 alg = X509_ALGOR_new();
920 ASN1_INTEGER_free(key);
924 X509_ALGOR_set0(alg, OBJ_nid2obj(algnid),
925 key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key);
927 *algs = sk_X509_ALGOR_new_null();
928 if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) {
929 X509_ALGOR_free(alg);
935 /* Check to see if a cipher exists and if so add S/MIME capabilities */
937 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
939 if (EVP_get_cipherbynid(nid))
940 return CMS_add_simple_smimecap(sk, nid, arg);
944 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg)
946 if (EVP_get_digestbynid(nid))
947 return CMS_add_simple_smimecap(sk, nid, arg);
951 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap)
953 if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
954 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1)
955 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1)
956 || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
957 || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
958 || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
959 || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
960 || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
961 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128)
962 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64)
963 || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1)
964 || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40))