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) <= 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))