1 /* crypto/cms/cms_sd.c */
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 * ====================================================================
55 #include <openssl/asn1t.h>
56 #include <openssl/pem.h>
57 #include <openssl/x509v3.h>
58 #include <openssl/err.h>
59 #include <openssl/cms.h>
61 #include "asn1_locl.h"
63 /* CMS SignedData Utilities */
65 DECLARE_ASN1_ITEM(CMS_SignedData
)
67 static CMS_SignedData
*cms_get0_signed(CMS_ContentInfo
*cms
)
69 if (OBJ_obj2nid(cms
->contentType
) != NID_pkcs7_signed
)
71 CMSerr(CMS_F_CMS_GET0_SIGNED
, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA
);
74 return cms
->d
.signedData
;
77 static CMS_SignedData
*cms_signed_data_init(CMS_ContentInfo
*cms
)
79 if (cms
->d
.other
== NULL
)
81 cms
->d
.signedData
= M_ASN1_new_of(CMS_SignedData
);
82 if (!cms
->d
.signedData
)
84 CMSerr(CMS_F_CMS_SIGNED_DATA_INIT
, ERR_R_MALLOC_FAILURE
);
87 cms
->d
.signedData
->version
= 1;
88 cms
->d
.signedData
->encapContentInfo
->eContentType
=
89 OBJ_nid2obj(NID_pkcs7_data
);
90 ASN1_OBJECT_free(cms
->contentType
);
91 cms
->contentType
= OBJ_nid2obj(NID_pkcs7_signed
);
92 return cms
->d
.signedData
;
94 return cms_get0_signed(cms
);
97 /* Just initialize SignedData e.g. for certs only structure */
99 int CMS_SignedData_init(CMS_ContentInfo
*cms
)
101 if (cms_signed_data_init(cms
))
107 /* Check structures and fixup version numbers (if necessary) */
109 static void cms_sd_set_version(CMS_SignedData
*sd
)
112 CMS_CertificateChoices
*cch
;
113 CMS_RevocationInfoChoice
*rch
;
116 for (i
= 0; i
< sk_CMS_CertificateChoices_num(sd
->certificates
); i
++)
118 cch
= sk_CMS_CertificateChoices_value(sd
->certificates
, i
);
119 if (cch
->type
== CMS_CERTCHOICE_OTHER
)
124 else if (cch
->type
== CMS_CERTCHOICE_V2ACERT
)
129 else if (cch
->type
== CMS_CERTCHOICE_V1ACERT
)
136 for (i
= 0; i
< sk_CMS_RevocationInfoChoice_num(sd
->crls
); i
++)
138 rch
= sk_CMS_RevocationInfoChoice_value(sd
->crls
, i
);
139 if (rch
->type
== CMS_REVCHOICE_OTHER
)
146 if ((OBJ_obj2nid(sd
->encapContentInfo
->eContentType
) != NID_pkcs7_data
)
147 && (sd
->version
< 3))
150 for (i
= 0; i
< sk_CMS_SignerInfo_num(sd
->signerInfos
); i
++)
152 si
= sk_CMS_SignerInfo_value(sd
->signerInfos
, i
);
153 if (si
->sid
->type
== CMS_SIGNERINFO_KEYIDENTIFIER
)
169 /* Copy an existing messageDigest value */
171 static int cms_copy_messageDigest(CMS_ContentInfo
*cms
, CMS_SignerInfo
*si
)
173 STACK_OF(CMS_SignerInfo
) *sinfos
;
174 CMS_SignerInfo
*sitmp
;
176 sinfos
= CMS_get0_SignerInfos(cms
);
177 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++)
179 ASN1_OCTET_STRING
*messageDigest
;
180 sitmp
= sk_CMS_SignerInfo_value(sinfos
, i
);
183 if (CMS_signed_get_attr_count(sitmp
) < 0)
185 if (OBJ_cmp(si
->digestAlgorithm
->algorithm
,
186 sitmp
->digestAlgorithm
->algorithm
))
188 messageDigest
= CMS_signed_get0_data_by_OBJ(sitmp
,
189 OBJ_nid2obj(NID_pkcs9_messageDigest
),
190 -3, V_ASN1_OCTET_STRING
);
193 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST
,
194 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE
);
198 if (CMS_signed_add1_attr_by_NID(si
, NID_pkcs9_messageDigest
,
205 CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST
, CMS_R_NO_MATCHING_DIGEST
);
209 int cms_set1_SignerIdentifier(CMS_SignerIdentifier
*sid
, X509
*cert
, int type
)
213 case CMS_SIGNERINFO_ISSUER_SERIAL
:
214 sid
->d
.issuerAndSerialNumber
=
215 M_ASN1_new_of(CMS_IssuerAndSerialNumber
);
216 if (!sid
->d
.issuerAndSerialNumber
)
218 if (!X509_NAME_set(&sid
->d
.issuerAndSerialNumber
->issuer
,
219 X509_get_issuer_name(cert
)))
221 if (!ASN1_STRING_copy(
222 sid
->d
.issuerAndSerialNumber
->serialNumber
,
223 X509_get_serialNumber(cert
)))
227 case CMS_SIGNERINFO_KEYIDENTIFIER
:
228 sid
->d
.subjectKeyIdentifier
= ASN1_STRING_dup(cert
->skid
);
229 if (!sid
->d
.subjectKeyIdentifier
)
234 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER
, CMS_R_UNKNOWN_ID
);
243 CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER
, ERR_R_MALLOC_FAILURE
);
248 int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier
*sid
,
249 ASN1_OCTET_STRING
**keyid
,
250 X509_NAME
**issuer
, ASN1_INTEGER
**sno
)
252 if (sid
->type
== CMS_SIGNERINFO_ISSUER_SERIAL
)
255 *issuer
= sid
->d
.issuerAndSerialNumber
->issuer
;
257 *sno
= sid
->d
.issuerAndSerialNumber
->serialNumber
;
259 else if (sid
->type
== CMS_SIGNERINFO_KEYIDENTIFIER
)
262 *keyid
= sid
->d
.subjectKeyIdentifier
;
269 int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier
*sid
, X509
*cert
)
272 if (sid
->type
== CMS_SIGNERINFO_ISSUER_SERIAL
)
274 ret
= X509_NAME_cmp(sid
->d
.issuerAndSerialNumber
->issuer
,
275 X509_get_issuer_name(cert
));
278 return ASN1_INTEGER_cmp(sid
->d
.issuerAndSerialNumber
->serialNumber
,
279 X509_get_serialNumber(cert
));
281 else if (sid
->type
== CMS_SIGNERINFO_KEYIDENTIFIER
)
283 X509_check_purpose(cert
, -1, -1);
286 return ASN1_OCTET_STRING_cmp(sid
->d
.subjectKeyIdentifier
,
293 CMS_SignerInfo
*CMS_add1_signer(CMS_ContentInfo
*cms
,
294 X509
*signer
, EVP_PKEY
*pk
, const EVP_MD
*md
,
298 CMS_SignerInfo
*si
= NULL
;
301 if(!X509_check_private_key(signer
, pk
))
303 CMSerr(CMS_F_CMS_ADD1_SIGNER
,
304 CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE
);
307 sd
= cms_signed_data_init(cms
);
310 si
= M_ASN1_new_of(CMS_SignerInfo
);
313 X509_check_purpose(signer
, -1, -1);
315 CRYPTO_add(&pk
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
316 CRYPTO_add(&signer
->references
, 1, CRYPTO_LOCK_X509
);
321 if (flags
& CMS_USE_KEYID
)
326 type
= CMS_SIGNERINFO_KEYIDENTIFIER
;
330 type
= CMS_SIGNERINFO_ISSUER_SERIAL
;
334 if (!cms_set1_SignerIdentifier(si
->sid
, signer
, type
))
340 if (EVP_PKEY_get_default_digest_nid(pk
, &def_nid
) <= 0)
342 md
= EVP_get_digestbynid(def_nid
);
345 CMSerr(CMS_F_CMS_ADD1_SIGNER
, CMS_R_NO_DEFAULT_DIGEST
);
352 CMSerr(CMS_F_CMS_ADD1_SIGNER
, CMS_R_NO_DIGEST_SET
);
356 cms_DigestAlgorithm_set(si
->digestAlgorithm
, md
);
358 /* See if digest is present in digestAlgorithms */
359 for (i
= 0; i
< sk_X509_ALGOR_num(sd
->digestAlgorithms
); i
++)
362 alg
= sk_X509_ALGOR_value(sd
->digestAlgorithms
, i
);
363 X509_ALGOR_get0(&aoid
, NULL
, NULL
, alg
);
364 if (OBJ_obj2nid(aoid
) == EVP_MD_type(md
))
368 if (i
== sk_X509_ALGOR_num(sd
->digestAlgorithms
))
370 alg
= X509_ALGOR_new();
373 cms_DigestAlgorithm_set(alg
, md
);
374 if (!sk_X509_ALGOR_push(sd
->digestAlgorithms
, alg
))
376 X509_ALGOR_free(alg
);
381 if (pk
->ameth
&& pk
->ameth
->pkey_ctrl
)
383 i
= pk
->ameth
->pkey_ctrl(pk
, ASN1_PKEY_CTRL_CMS_SIGN
,
387 CMSerr(CMS_F_CMS_ADD1_SIGNER
,
388 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
);
393 CMSerr(CMS_F_CMS_ADD1_SIGNER
, CMS_R_CTRL_FAILURE
);
398 if (!(flags
& CMS_NOATTR
))
400 /* Copy content type across */
402 OBJ_dup(sd
->encapContentInfo
->eContentType
);
405 i
= CMS_signed_add1_attr_by_NID(si
, NID_pkcs9_contentType
,
406 V_ASN1_OBJECT
, ctype
, -1);
407 ASN1_OBJECT_free(ctype
);
410 if (!(flags
& CMS_NOSMIMECAP
))
412 STACK_OF(X509_ALGOR
) *smcap
= NULL
;
413 i
= CMS_add_standard_smimecap(&smcap
);
415 i
= CMS_add_smimecap(si
, smcap
);
416 sk_X509_ALGOR_pop_free(smcap
, X509_ALGOR_free
);
420 if (flags
& CMS_REUSE_DIGEST
)
422 if (!cms_copy_messageDigest(cms
, si
))
424 if (!(flags
& CMS_PARTIAL
) &&
425 !CMS_SignerInfo_sign(si
))
430 if (!(flags
& CMS_NOCERTS
))
432 /* NB ignore -1 return for duplicate cert */
433 if (!CMS_add1_cert(cms
, signer
))
437 if (!sd
->signerInfos
)
438 sd
->signerInfos
= sk_CMS_SignerInfo_new_null();
439 if (!sd
->signerInfos
||
440 !sk_CMS_SignerInfo_push(sd
->signerInfos
, si
))
446 CMSerr(CMS_F_CMS_ADD1_SIGNER
, ERR_R_MALLOC_FAILURE
);
449 M_ASN1_free_of(si
, CMS_SignerInfo
);
454 int CMS_add1_signingTime(CMS_SignerInfo
*si
, ASN1_TIME
*t
)
461 tt
= X509_gmtime_adj(NULL
, 0);
466 if (CMS_signed_add1_attr_by_NID(si
, NID_pkcs9_signingTime
,
467 tt
->type
, tt
, -1) <= 0)
478 CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME
, ERR_R_MALLOC_FAILURE
);
484 STACK_OF(CMS_SignerInfo
) *CMS_get0_SignerInfos(CMS_ContentInfo
*cms
)
487 sd
= cms_get0_signed(cms
);
490 return sd
->signerInfos
;
493 STACK_OF(X509
) *CMS_get0_signers(CMS_ContentInfo
*cms
)
495 STACK_OF(X509
) *signers
= NULL
;
496 STACK_OF(CMS_SignerInfo
) *sinfos
;
499 sinfos
= CMS_get0_SignerInfos(cms
);
500 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++)
502 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
507 signers
= sk_X509_new_null();
511 if (!sk_X509_push(signers
, si
->signer
))
513 sk_X509_free(signers
);
521 void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo
*si
, X509
*signer
)
525 CRYPTO_add(&signer
->references
, 1, CRYPTO_LOCK_X509
);
527 EVP_PKEY_free(si
->pkey
);
528 si
->pkey
= X509_get_pubkey(signer
);
531 X509_free(si
->signer
);
535 int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo
*si
,
536 ASN1_OCTET_STRING
**keyid
,
537 X509_NAME
**issuer
, ASN1_INTEGER
**sno
)
539 return cms_SignerIdentifier_get0_signer_id(si
->sid
, keyid
, issuer
, sno
);
542 int CMS_SignerInfo_cert_cmp(CMS_SignerInfo
*si
, X509
*cert
)
544 return cms_SignerIdentifier_cert_cmp(si
->sid
, cert
);
547 int CMS_set1_signers_certs(CMS_ContentInfo
*cms
, STACK_OF(X509
) *scerts
,
552 CMS_CertificateChoices
*cch
;
553 STACK_OF(CMS_CertificateChoices
) *certs
;
557 sd
= cms_get0_signed(cms
);
560 certs
= sd
->certificates
;
561 for (i
= 0; i
< sk_CMS_SignerInfo_num(sd
->signerInfos
); i
++)
563 si
= sk_CMS_SignerInfo_value(sd
->signerInfos
, i
);
567 for (j
= 0; j
< sk_X509_num(scerts
); j
++)
569 x
= sk_X509_value(scerts
, j
);
570 if (CMS_SignerInfo_cert_cmp(si
, x
) == 0)
572 CMS_SignerInfo_set1_signer_cert(si
, x
);
578 if (si
->signer
|| (flags
& CMS_NOINTERN
))
581 for (j
= 0; j
< sk_CMS_CertificateChoices_num(certs
); j
++)
583 cch
= sk_CMS_CertificateChoices_value(certs
, j
);
586 x
= cch
->d
.certificate
;
587 if (CMS_SignerInfo_cert_cmp(si
, x
) == 0)
589 CMS_SignerInfo_set1_signer_cert(si
, x
);
598 void CMS_SignerInfo_get0_algs(CMS_SignerInfo
*si
, EVP_PKEY
**pk
, X509
**signer
,
599 X509_ALGOR
**pdig
, X509_ALGOR
**psig
)
604 *signer
= si
->signer
;
606 *pdig
= si
->digestAlgorithm
;
608 *psig
= si
->signatureAlgorithm
;
611 int cms_SignerInfo_content_sign(CMS_SignerInfo
*si
, BIO
*chain
)
615 EVP_MD_CTX_init(&mctx
);
620 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN
, CMS_R_NO_PRIVATE_KEY
);
624 if (!cms_DigestAlgorithm_find_ctx(&mctx
, chain
, si
->digestAlgorithm
))
627 /* If any signed attributes calculate and add messageDigest attribute */
629 if (CMS_signed_get_attr_count(si
) >= 0)
631 unsigned char md
[EVP_MAX_MD_SIZE
];
633 EVP_DigestFinal_ex(&mctx
, md
, &mdlen
);
634 if (!CMS_signed_add1_attr_by_NID(si
, NID_pkcs9_messageDigest
,
638 if (!CMS_SignerInfo_sign(si
))
645 sig
= OPENSSL_malloc(EVP_PKEY_size(si
->pkey
));
648 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN
,
649 ERR_R_MALLOC_FAILURE
);
652 if (!EVP_SignFinal(&mctx
, sig
, &siglen
, si
->pkey
))
654 CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN
,
655 CMS_R_SIGNFINAL_ERROR
);
659 ASN1_STRING_set0(si
->signature
, sig
, siglen
);
665 EVP_MD_CTX_cleanup(&mctx
);
670 int cms_SignedData_final(CMS_ContentInfo
*cms
, BIO
*chain
)
672 STACK_OF(CMS_SignerInfo
) *sinfos
;
675 sinfos
= CMS_get0_SignerInfos(cms
);
676 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++)
678 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
679 if (!cms_SignerInfo_content_sign(si
, chain
))
685 int CMS_SignerInfo_sign(CMS_SignerInfo
*si
)
689 unsigned char *abuf
= NULL
;
692 const EVP_MD
*md
= NULL
;
694 md
= EVP_get_digestbyobj(si
->digestAlgorithm
->algorithm
);
698 EVP_MD_CTX_init(&mctx
);
700 if (CMS_signed_get_attr_by_NID(si
, NID_pkcs9_signingTime
, -1) < 0)
702 if (!CMS_add1_signingTime(si
, NULL
))
706 if (EVP_DigestSignInit(&mctx
, &pctx
, md
, NULL
, si
->pkey
) <= 0)
709 if (EVP_PKEY_CTX_ctrl(pctx
, -1, EVP_PKEY_OP_SIGN
,
710 EVP_PKEY_CTRL_CMS_SIGN
, 0, si
) <= 0)
712 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN
, CMS_R_CTRL_ERROR
);
716 alen
= ASN1_item_i2d((ASN1_VALUE
*)si
->signedAttrs
,&abuf
,
717 ASN1_ITEM_rptr(CMS_Attributes_Sign
));
720 if (EVP_DigestSignUpdate(&mctx
, abuf
, alen
) <= 0)
722 if (EVP_DigestSignFinal(&mctx
, NULL
, &siglen
) <= 0)
725 abuf
= OPENSSL_malloc(siglen
);
728 if (EVP_DigestSignFinal(&mctx
, abuf
, &siglen
) <= 0)
731 if (EVP_PKEY_CTX_ctrl(pctx
, -1, EVP_PKEY_OP_SIGN
,
732 EVP_PKEY_CTRL_CMS_SIGN
, 1, si
) <= 0)
734 CMSerr(CMS_F_CMS_SIGNERINFO_SIGN
, CMS_R_CTRL_ERROR
);
738 EVP_MD_CTX_cleanup(&mctx
);
740 ASN1_STRING_set0(si
->signature
, abuf
, siglen
);
747 EVP_MD_CTX_cleanup(&mctx
);
752 int CMS_SignerInfo_verify(CMS_SignerInfo
*si
)
756 unsigned char *abuf
= NULL
;
758 const EVP_MD
*md
= NULL
;
762 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY
, CMS_R_NO_PUBLIC_KEY
);
766 md
= EVP_get_digestbyobj(si
->digestAlgorithm
->algorithm
);
769 EVP_MD_CTX_init(&mctx
);
770 if (EVP_DigestVerifyInit(&mctx
, &pctx
, md
, NULL
, si
->pkey
) <= 0)
773 alen
= ASN1_item_i2d((ASN1_VALUE
*)si
->signedAttrs
,&abuf
,
774 ASN1_ITEM_rptr(CMS_Attributes_Verify
));
777 r
= EVP_DigestVerifyUpdate(&mctx
, abuf
, alen
);
784 r
= EVP_DigestVerifyFinal(&mctx
,
785 si
->signature
->data
, si
->signature
->length
);
787 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY
, CMS_R_VERIFICATION_FAILURE
);
789 EVP_MD_CTX_cleanup(&mctx
);
793 /* Create a chain of digest BIOs from a CMS ContentInfo */
795 BIO
*cms_SignedData_init_bio(CMS_ContentInfo
*cms
)
800 sd
= cms_get0_signed(cms
);
801 cms_sd_set_version(sd
);
804 for (i
= 0; i
< sk_X509_ALGOR_num(sd
->digestAlgorithms
); i
++)
806 X509_ALGOR
*digestAlgorithm
;
808 digestAlgorithm
= sk_X509_ALGOR_value(sd
->digestAlgorithms
, i
);
809 mdbio
= cms_DigestAlgorithm_init_bio(digestAlgorithm
);
813 BIO_push(chain
, mdbio
);
824 int CMS_SignerInfo_verify_content(CMS_SignerInfo
*si
, BIO
*chain
)
826 ASN1_OCTET_STRING
*os
= NULL
;
829 EVP_MD_CTX_init(&mctx
);
830 /* If we have any signed attributes look for messageDigest value */
831 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
);
838 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT
,
839 CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE
);
844 if (!cms_DigestAlgorithm_find_ctx(&mctx
, chain
, si
->digestAlgorithm
))
847 /* If messageDigest found compare it */
851 unsigned char mval
[EVP_MAX_MD_SIZE
];
853 if (EVP_DigestFinal_ex(&mctx
, mval
, &mlen
) <= 0)
855 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT
,
856 CMS_R_UNABLE_TO_FINALIZE_CONTEXT
);
859 if (mlen
!= os
->length
)
861 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT
,
862 CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH
);
866 if (memcmp(mval
, os
->data
, mlen
))
868 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT
,
869 CMS_R_VERIFICATION_FAILURE
);
877 r
= EVP_VerifyFinal(&mctx
, si
->signature
->data
,
878 si
->signature
->length
, si
->pkey
);
881 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT
,
882 CMS_R_VERIFICATION_FAILURE
);
888 EVP_MD_CTX_cleanup(&mctx
);
893 int CMS_add_smimecap(CMS_SignerInfo
*si
, STACK_OF(X509_ALGOR
) *algs
)
895 unsigned char *smder
= NULL
;
897 smderlen
= i2d_X509_ALGORS(algs
, &smder
);
900 r
= CMS_signed_add1_attr_by_NID(si
, NID_SMIMECapabilities
,
901 V_ASN1_SEQUENCE
, smder
, smderlen
);
906 int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR
) **algs
,
907 int algnid
, int keysize
)
910 ASN1_INTEGER
*key
= NULL
;
913 key
= ASN1_INTEGER_new();
914 if (!key
|| !ASN1_INTEGER_set(key
, keysize
))
917 alg
= X509_ALGOR_new();
921 ASN1_INTEGER_free(key
);
925 X509_ALGOR_set0(alg
, OBJ_nid2obj(algnid
),
926 key
? V_ASN1_INTEGER
: V_ASN1_UNDEF
, key
);
928 *algs
= sk_X509_ALGOR_new_null();
929 if (!*algs
|| !sk_X509_ALGOR_push(*algs
, alg
))
931 X509_ALGOR_free(alg
);
937 /* Check to see if a cipher exists and if so add S/MIME capabilities */
939 static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR
) **sk
, int nid
, int arg
)
941 if (EVP_get_cipherbynid(nid
))
942 return CMS_add_simple_smimecap(sk
, nid
, arg
);
946 static int cms_add_digest_smcap(STACK_OF(X509_ALGOR
) **sk
, int nid
, int arg
)
948 if (EVP_get_digestbynid(nid
))
949 return CMS_add_simple_smimecap(sk
, nid
, arg
);
953 int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR
) **smcap
)
955 if (!cms_add_cipher_smcap(smcap
, NID_aes_256_cbc
, -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))