1 /* crypto/cms/cms_lib.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 * ====================================================================
54 #include <openssl/asn1t.h>
55 #include <openssl/x509.h>
56 #include <openssl/err.h>
57 #include <openssl/pem.h>
58 #include <openssl/bio.h>
59 #include <openssl/asn1.h>
63 IMPLEMENT_ASN1_FUNCTIONS_const(CMS_ContentInfo
)
65 DECLARE_ASN1_ITEM(CMS_CertificateChoices
)
66 DECLARE_ASN1_ITEM(CMS_RevocationInfoChoice
)
67 DECLARE_STACK_OF(CMS_CertificateChoices
)
68 DECLARE_STACK_OF(CMS_RevocationInfoChoice
)
70 const ASN1_OBJECT
*CMS_get0_type(CMS_ContentInfo
*cms
)
72 return cms
->contentType
;
75 CMS_ContentInfo
*cms_Data_create(void)
78 cms
= CMS_ContentInfo_new();
81 cms
->contentType
= OBJ_nid2obj(NID_pkcs7_data
);
83 CMS_set_detached(cms
, 0);
88 BIO
*cms_content_bio(CMS_ContentInfo
*cms
)
90 ASN1_OCTET_STRING
**pos
= CMS_get0_content(cms
);
93 /* If content detached data goes nowhere: create NULL BIO */
95 return BIO_new(BIO_s_null());
96 /* If content not detached and created return memory BIO
98 if (!*pos
|| ((*pos
)->flags
== ASN1_STRING_FLAG_CONT
))
99 return BIO_new(BIO_s_mem());
100 /* Else content was read in: return read only BIO for it */
101 return BIO_new_mem_buf((*pos
)->data
, (*pos
)->length
);
104 BIO
*CMS_dataInit(CMS_ContentInfo
*cms
, BIO
*icont
)
110 cont
= cms_content_bio(cms
);
113 CMSerr(CMS_F_CMS_DATAINIT
, CMS_R_NO_CONTENT
);
116 switch (OBJ_obj2nid(cms
->contentType
))
122 case NID_pkcs7_signed
:
123 cmsbio
= cms_SignedData_init_bio(cms
);
126 case NID_pkcs7_digest
:
127 cmsbio
= cms_DigestedData_init_bio(cms
);
130 case NID_id_smime_ct_compressedData
:
131 cmsbio
= cms_CompressedData_init_bio(cms
);
135 case NID_pkcs7_encrypted
:
136 cmsbio
= cms_EncryptedData_init_bio(cms
);
139 case NID_pkcs7_enveloped
:
140 cmsbio
= cms_EnvelopedData_init_bio(cms
);
144 CMSerr(CMS_F_CMS_DATAINIT
, CMS_R_UNSUPPORTED_TYPE
);
149 return BIO_push(cmsbio
, cont
);
157 int CMS_dataFinal(CMS_ContentInfo
*cms
, BIO
*cmsbio
)
159 ASN1_OCTET_STRING
**pos
= CMS_get0_content(cms
);
162 /* If ebmedded content find memory BIO and set content */
163 if (*pos
&& ((*pos
)->flags
& ASN1_STRING_FLAG_CONT
))
168 mbio
= BIO_find_type(cmsbio
, BIO_TYPE_MEM
);
171 CMSerr(CMS_F_CMS_DATAFINAL
, CMS_R_CONTENT_NOT_FOUND
);
174 contlen
= BIO_get_mem_data(mbio
, &cont
);
175 /* Set bio as read only so its content can't be clobbered */
176 BIO_set_flags(mbio
, BIO_FLAGS_MEM_RDONLY
);
177 BIO_set_mem_eof_return(mbio
, 0);
178 ASN1_STRING_set0(*pos
, cont
, contlen
);
179 (*pos
)->flags
&= ~ASN1_STRING_FLAG_CONT
;
182 switch (OBJ_obj2nid(cms
->contentType
))
186 case NID_pkcs7_enveloped
:
187 case NID_pkcs7_encrypted
:
188 case NID_id_smime_ct_compressedData
:
192 case NID_pkcs7_signed
:
193 return cms_SignedData_final(cms
, cmsbio
);
195 case NID_pkcs7_digest
:
196 return cms_DigestedData_do_final(cms
, cmsbio
, 0);
199 CMSerr(CMS_F_CMS_DATAFINAL
, CMS_R_UNSUPPORTED_TYPE
);
204 /* Return an OCTET STRING pointer to content. This allows it to
205 * be accessed or set later.
208 ASN1_OCTET_STRING
**CMS_get0_content(CMS_ContentInfo
*cms
)
210 switch (OBJ_obj2nid(cms
->contentType
))
216 case NID_pkcs7_signed
:
217 return &cms
->d
.signedData
->encapContentInfo
->eContent
;
219 case NID_pkcs7_enveloped
:
220 return &cms
->d
.envelopedData
->encryptedContentInfo
->encryptedContent
;
222 case NID_pkcs7_digest
:
223 return &cms
->d
.digestedData
->encapContentInfo
->eContent
;
225 case NID_pkcs7_encrypted
:
226 return &cms
->d
.encryptedData
->encryptedContentInfo
->encryptedContent
;
228 case NID_id_smime_ct_authData
:
229 return &cms
->d
.authenticatedData
->encapContentInfo
->eContent
;
231 case NID_id_smime_ct_compressedData
:
232 return &cms
->d
.compressedData
->encapContentInfo
->eContent
;
235 if (cms
->d
.other
->type
== V_ASN1_OCTET_STRING
)
236 return &cms
->d
.other
->value
.octet_string
;
237 CMSerr(CMS_F_CMS_GET0_CONTENT
, CMS_R_UNSUPPORTED_CONTENT_TYPE
);
243 /* Return an ASN1_OBJECT pointer to content type. This allows it to
244 * be accessed or set later.
247 static ASN1_OBJECT
**cms_get0_econtent_type(CMS_ContentInfo
*cms
)
249 switch (OBJ_obj2nid(cms
->contentType
))
252 case NID_pkcs7_signed
:
253 return &cms
->d
.signedData
->encapContentInfo
->eContentType
;
255 case NID_pkcs7_enveloped
:
256 return &cms
->d
.envelopedData
->encryptedContentInfo
->contentType
;
258 case NID_pkcs7_digest
:
259 return &cms
->d
.digestedData
->encapContentInfo
->eContentType
;
261 case NID_pkcs7_encrypted
:
262 return &cms
->d
.encryptedData
->encryptedContentInfo
->contentType
;
264 case NID_id_smime_ct_authData
:
265 return &cms
->d
.authenticatedData
->encapContentInfo
->eContentType
;
267 case NID_id_smime_ct_compressedData
:
268 return &cms
->d
.compressedData
->encapContentInfo
->eContentType
;
271 CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE
,
272 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
278 const ASN1_OBJECT
*CMS_get0_eContentType(CMS_ContentInfo
*cms
)
280 ASN1_OBJECT
**petype
;
281 petype
= cms_get0_econtent_type(cms
);
287 int CMS_set1_eContentType(CMS_ContentInfo
*cms
, const ASN1_OBJECT
*oid
)
289 ASN1_OBJECT
**petype
, *etype
;
290 petype
= cms_get0_econtent_type(cms
);
295 etype
= OBJ_dup(oid
);
298 ASN1_OBJECT_free(*petype
);
303 int CMS_is_detached(CMS_ContentInfo
*cms
)
305 ASN1_OCTET_STRING
**pos
;
306 pos
= CMS_get0_content(cms
);
314 int CMS_set_detached(CMS_ContentInfo
*cms
, int detached
)
316 ASN1_OCTET_STRING
**pos
;
317 pos
= CMS_get0_content(cms
);
324 ASN1_OCTET_STRING_free(*pos
);
330 *pos
= ASN1_OCTET_STRING_new();
333 /* NB: special flag to show content is created and not
336 (*pos
)->flags
|= ASN1_STRING_FLAG_CONT
;
339 CMSerr(CMS_F_CMS_SET_DETACHED
, ERR_R_MALLOC_FAILURE
);
343 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
345 void cms_DigestAlgorithm_set(X509_ALGOR
*alg
, const EVP_MD
*md
)
349 switch (EVP_MD_type(md
))
356 param_type
= V_ASN1_UNDEF
;
360 param_type
= V_ASN1_NULL
;
364 X509_ALGOR_set0(alg
, OBJ_nid2obj(EVP_MD_type(md
)), param_type
, NULL
);
368 /* Create a digest BIO from an X509_ALGOR structure */
370 BIO
*cms_DigestAlgorithm_init_bio(X509_ALGOR
*digestAlgorithm
)
373 ASN1_OBJECT
*digestoid
;
374 const EVP_MD
*digest
;
375 X509_ALGOR_get0(&digestoid
, NULL
, NULL
, digestAlgorithm
);
376 digest
= EVP_get_digestbyobj(digestoid
);
379 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO
,
380 CMS_R_UNKNOWN_DIGEST_ALGORIHM
);
383 mdbio
= BIO_new(BIO_f_md());
384 if (!mdbio
|| !BIO_set_md(mdbio
, digest
))
386 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO
,
387 CMS_R_MD_BIO_INIT_ERROR
);
397 /* Locate a message digest content from a BIO chain based on SignerInfo */
399 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX
*mctx
, BIO
*chain
,
404 X509_ALGOR_get0(&mdoid
, NULL
, NULL
, mdalg
);
405 nid
= OBJ_obj2nid(mdoid
);
406 /* Look for digest type to match signature */
410 chain
= BIO_find_type(chain
, BIO_TYPE_MD
);
413 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX
,
414 CMS_R_NO_MATCHING_DIGEST
);
417 BIO_get_md_ctx(chain
, &mtmp
);
418 if (EVP_MD_CTX_type(mtmp
) == nid
)
420 EVP_MD_CTX_copy_ex(mctx
, mtmp
);
423 chain
= BIO_next(chain
);
427 static STACK_OF(CMS_CertificateChoices
) **cms_get0_certificate_choices(CMS_ContentInfo
*cms
)
429 switch (OBJ_obj2nid(cms
->contentType
))
432 case NID_pkcs7_signed
:
433 return &cms
->d
.signedData
->certificates
;
435 case NID_pkcs7_enveloped
:
436 return &cms
->d
.envelopedData
->originatorInfo
->certificates
;
439 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES
,
440 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
446 CMS_CertificateChoices
*CMS_add0_CertificateChoices(CMS_ContentInfo
*cms
)
448 STACK_OF(CMS_CertificateChoices
) **pcerts
;
449 CMS_CertificateChoices
*cch
;
450 pcerts
= cms_get0_certificate_choices(cms
);
454 *pcerts
= sk_CMS_CertificateChoices_new_null();
457 cch
= M_ASN1_new_of(CMS_CertificateChoices
);
460 if (!sk_CMS_CertificateChoices_push(*pcerts
, cch
))
462 M_ASN1_free_of(cch
, CMS_CertificateChoices
);
468 int CMS_add0_cert(CMS_ContentInfo
*cms
, X509
*cert
)
470 CMS_CertificateChoices
*cch
;
471 STACK_OF(CMS_CertificateChoices
) **pcerts
;
473 pcerts
= cms_get0_certificate_choices(cms
);
478 for (i
= 0; i
< sk_CMS_CertificateChoices_num(*pcerts
); i
++)
480 cch
= sk_CMS_CertificateChoices_value(*pcerts
, i
);
481 if (cch
->type
== CMS_CERTCHOICE_CERT
)
483 if (!X509_cmp(cch
->d
.certificate
, cert
))
485 CMSerr(CMS_F_CMS_ADD0_CERT
,
486 CMS_R_CERTIFICATE_ALREADY_PRESENT
);
491 cch
= CMS_add0_CertificateChoices(cms
);
494 cch
->type
= CMS_CERTCHOICE_CERT
;
495 cch
->d
.certificate
= cert
;
499 int CMS_add1_cert(CMS_ContentInfo
*cms
, X509
*cert
)
502 r
= CMS_add0_cert(cms
, cert
);
504 CRYPTO_add(&cert
->references
, 1, CRYPTO_LOCK_X509
);
508 static STACK_OF(CMS_RevocationInfoChoice
) **cms_get0_revocation_choices(CMS_ContentInfo
*cms
)
510 switch (OBJ_obj2nid(cms
->contentType
))
513 case NID_pkcs7_signed
:
514 return &cms
->d
.signedData
->crls
;
516 case NID_pkcs7_enveloped
:
517 return &cms
->d
.envelopedData
->originatorInfo
->crls
;
520 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES
,
521 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
527 CMS_RevocationInfoChoice
*CMS_add0_RevocationInfoChoice(CMS_ContentInfo
*cms
)
529 STACK_OF(CMS_RevocationInfoChoice
) **pcrls
;
530 CMS_RevocationInfoChoice
*rch
;
531 pcrls
= cms_get0_revocation_choices(cms
);
535 *pcrls
= sk_CMS_RevocationInfoChoice_new_null();
538 rch
= M_ASN1_new_of(CMS_RevocationInfoChoice
);
541 if (!sk_CMS_RevocationInfoChoice_push(*pcrls
, rch
))
543 M_ASN1_free_of(rch
, CMS_RevocationInfoChoice
);
549 int CMS_add0_crl(CMS_ContentInfo
*cms
, X509_CRL
*crl
)
551 CMS_RevocationInfoChoice
*rch
;
552 rch
= CMS_add0_RevocationInfoChoice(cms
);
555 rch
->type
= CMS_REVCHOICE_CRL
;
560 STACK_OF(X509
) *CMS_get1_certs(CMS_ContentInfo
*cms
)
562 STACK_OF(X509
) *certs
= NULL
;
563 CMS_CertificateChoices
*cch
;
564 STACK_OF(CMS_CertificateChoices
) **pcerts
;
566 pcerts
= cms_get0_certificate_choices(cms
);
569 for (i
= 0; i
< sk_CMS_CertificateChoices_num(*pcerts
); i
++)
571 cch
= sk_CMS_CertificateChoices_value(*pcerts
, i
);
576 certs
= sk_X509_new_null();
580 if (!sk_X509_push(certs
, cch
->d
.certificate
))
582 sk_X509_pop_free(certs
, X509_free
);
585 CRYPTO_add(&cch
->d
.certificate
->references
,
586 1, CRYPTO_LOCK_X509
);
593 STACK_OF(X509_CRL
) *CMS_get1_crls(CMS_ContentInfo
*cms
)
595 STACK_OF(X509_CRL
) *crls
= NULL
;
596 STACK_OF(CMS_RevocationInfoChoice
) **pcrls
;
597 CMS_RevocationInfoChoice
*rch
;
599 pcrls
= cms_get0_revocation_choices(cms
);
602 for (i
= 0; i
< sk_CMS_RevocationInfoChoice_num(*pcrls
); i
++)
604 rch
= sk_CMS_RevocationInfoChoice_value(*pcrls
, i
);
609 crls
= sk_X509_CRL_new_null();
613 if (!sk_X509_CRL_push(crls
, rch
->d
.crl
))
615 sk_X509_CRL_pop_free(crls
, X509_CRL_free
);
618 CRYPTO_add(&rch
->d
.crl
->references
,
619 1, CRYPTO_LOCK_X509_CRL
);