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(CMS_ContentInfo
)
64 IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo
)
66 DECLARE_ASN1_ITEM(CMS_CertificateChoices
)
67 DECLARE_ASN1_ITEM(CMS_RevocationInfoChoice
)
68 DECLARE_STACK_OF(CMS_CertificateChoices
)
69 DECLARE_STACK_OF(CMS_RevocationInfoChoice
)
71 const ASN1_OBJECT
*CMS_get0_type(CMS_ContentInfo
*cms
)
73 return cms
->contentType
;
76 CMS_ContentInfo
*cms_Data_create(void)
79 cms
= CMS_ContentInfo_new();
82 cms
->contentType
= OBJ_nid2obj(NID_pkcs7_data
);
84 CMS_set_detached(cms
, 0);
89 BIO
*cms_content_bio(CMS_ContentInfo
*cms
)
91 ASN1_OCTET_STRING
**pos
= CMS_get0_content(cms
);
94 /* If content detached data goes nowhere: create NULL BIO */
96 return BIO_new(BIO_s_null());
97 /* If content not detached and created return memory BIO
99 if (!*pos
|| ((*pos
)->flags
== ASN1_STRING_FLAG_CONT
))
100 return BIO_new(BIO_s_mem());
101 /* Else content was read in: return read only BIO for it */
102 return BIO_new_mem_buf((*pos
)->data
, (*pos
)->length
);
105 BIO
*CMS_dataInit(CMS_ContentInfo
*cms
, BIO
*icont
)
111 cont
= cms_content_bio(cms
);
114 CMSerr(CMS_F_CMS_DATAINIT
, CMS_R_NO_CONTENT
);
117 switch (OBJ_obj2nid(cms
->contentType
))
123 case NID_pkcs7_signed
:
124 cmsbio
= cms_SignedData_init_bio(cms
);
127 case NID_pkcs7_digest
:
128 cmsbio
= cms_DigestedData_init_bio(cms
);
131 case NID_id_smime_ct_compressedData
:
132 cmsbio
= cms_CompressedData_init_bio(cms
);
136 case NID_pkcs7_encrypted
:
137 cmsbio
= cms_EncryptedData_init_bio(cms
);
141 CMSerr(CMS_F_CMS_DATAINIT
, CMS_R_UNSUPPORTED_TYPE
);
146 return BIO_push(cmsbio
, cont
);
154 int CMS_dataFinal(CMS_ContentInfo
*cms
, BIO
*cmsbio
)
156 ASN1_OCTET_STRING
**pos
= CMS_get0_content(cms
);
159 /* If ebmedded content find memory BIO and set content */
160 if (*pos
&& ((*pos
)->flags
& ASN1_STRING_FLAG_CONT
))
165 mbio
= BIO_find_type(cmsbio
, BIO_TYPE_MEM
);
168 CMSerr(CMS_F_CMS_DATAFINAL
, CMS_R_CONTENT_NOT_FOUND
);
171 contlen
= BIO_get_mem_data(mbio
, &cont
);
172 /* Set bio as read only so its content can't be clobbered */
173 BIO_set_flags(mbio
, BIO_FLAGS_MEM_RDONLY
);
174 BIO_set_mem_eof_return(mbio
, 0);
175 ASN1_STRING_set0(*pos
, cont
, contlen
);
176 (*pos
)->flags
&= ~ASN1_STRING_FLAG_CONT
;
179 switch (OBJ_obj2nid(cms
->contentType
))
183 case NID_pkcs7_encrypted
:
184 case NID_id_smime_ct_compressedData
:
188 case NID_pkcs7_signed
:
189 return cms_SignedData_final(cms
, cmsbio
);
191 case NID_pkcs7_digest
:
192 return cms_DigestedData_do_final(cms
, cmsbio
, 0);
195 CMSerr(CMS_F_CMS_DATAFINAL
, CMS_R_UNSUPPORTED_TYPE
);
200 /* Return an OCTET STRING pointer to content. This allows it to
201 * be accessed or set later.
204 ASN1_OCTET_STRING
**CMS_get0_content(CMS_ContentInfo
*cms
)
206 switch (OBJ_obj2nid(cms
->contentType
))
212 case NID_pkcs7_signed
:
213 return &cms
->d
.signedData
->encapContentInfo
->eContent
;
215 case NID_pkcs7_enveloped
:
216 return &cms
->d
.envelopedData
->encryptedContentInfo
->encryptedContent
;
218 case NID_pkcs7_digest
:
219 return &cms
->d
.digestedData
->encapContentInfo
->eContent
;
221 case NID_pkcs7_encrypted
:
222 return &cms
->d
.encryptedData
->encryptedContentInfo
->encryptedContent
;
224 case NID_id_smime_ct_authData
:
225 return &cms
->d
.authenticatedData
->encapContentInfo
->eContent
;
227 case NID_id_smime_ct_compressedData
:
228 return &cms
->d
.compressedData
->encapContentInfo
->eContent
;
231 if (cms
->d
.other
->type
== V_ASN1_OCTET_STRING
)
232 return &cms
->d
.other
->value
.octet_string
;
233 CMSerr(CMS_F_CMS_GET0_CONTENT
, CMS_R_UNSUPPORTED_CONTENT_TYPE
);
239 /* Return an ASN1_OBJECT pointer to content type. This allows it to
240 * be accessed or set later.
243 static ASN1_OBJECT
**cms_get0_econtent_type(CMS_ContentInfo
*cms
)
245 switch (OBJ_obj2nid(cms
->contentType
))
248 case NID_pkcs7_signed
:
249 return &cms
->d
.signedData
->encapContentInfo
->eContentType
;
251 case NID_pkcs7_enveloped
:
252 return &cms
->d
.envelopedData
->encryptedContentInfo
->contentType
;
254 case NID_pkcs7_digest
:
255 return &cms
->d
.digestedData
->encapContentInfo
->eContentType
;
257 case NID_pkcs7_encrypted
:
258 return &cms
->d
.encryptedData
->encryptedContentInfo
->contentType
;
260 case NID_id_smime_ct_authData
:
261 return &cms
->d
.authenticatedData
->encapContentInfo
->eContentType
;
263 case NID_id_smime_ct_compressedData
:
264 return &cms
->d
.compressedData
->encapContentInfo
->eContentType
;
267 CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE
,
268 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
274 const ASN1_OBJECT
*CMS_get0_eContentType(CMS_ContentInfo
*cms
)
276 ASN1_OBJECT
**petype
;
277 petype
= cms_get0_econtent_type(cms
);
283 int CMS_set1_eContentType(CMS_ContentInfo
*cms
, const ASN1_OBJECT
*oid
)
285 ASN1_OBJECT
**petype
, *etype
;
286 petype
= cms_get0_econtent_type(cms
);
291 etype
= OBJ_dup(oid
);
294 ASN1_OBJECT_free(*petype
);
299 int CMS_is_detached(CMS_ContentInfo
*cms
)
301 ASN1_OCTET_STRING
**pos
;
302 pos
= CMS_get0_content(cms
);
310 int CMS_set_detached(CMS_ContentInfo
*cms
, int detached
)
312 ASN1_OCTET_STRING
**pos
;
313 pos
= CMS_get0_content(cms
);
320 ASN1_OCTET_STRING_free(*pos
);
326 *pos
= ASN1_OCTET_STRING_new();
329 /* NB: special flag to show content is created and not
332 (*pos
)->flags
|= ASN1_STRING_FLAG_CONT
;
335 CMSerr(CMS_F_CMS_SET_DETACHED
, ERR_R_MALLOC_FAILURE
);
339 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */
341 void cms_DigestAlgorithm_set(X509_ALGOR
*alg
, const EVP_MD
*md
)
345 if (md
->flags
& EVP_MD_FLAG_DIGALGID_ABSENT
)
346 param_type
= V_ASN1_UNDEF
;
348 param_type
= V_ASN1_NULL
;
350 X509_ALGOR_set0(alg
, OBJ_nid2obj(EVP_MD_type(md
)), param_type
, NULL
);
354 /* Create a digest BIO from an X509_ALGOR structure */
356 BIO
*cms_DigestAlgorithm_init_bio(X509_ALGOR
*digestAlgorithm
)
359 ASN1_OBJECT
*digestoid
;
360 const EVP_MD
*digest
;
361 X509_ALGOR_get0(&digestoid
, NULL
, NULL
, digestAlgorithm
);
362 digest
= EVP_get_digestbyobj(digestoid
);
365 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO
,
366 CMS_R_UNKNOWN_DIGEST_ALGORIHM
);
369 mdbio
= BIO_new(BIO_f_md());
370 if (!mdbio
|| !BIO_set_md(mdbio
, digest
))
372 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO
,
373 CMS_R_MD_BIO_INIT_ERROR
);
383 /* Locate a message digest content from a BIO chain based on SignerInfo */
385 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX
*mctx
, BIO
*chain
,
390 X509_ALGOR_get0(&mdoid
, NULL
, NULL
, mdalg
);
391 nid
= OBJ_obj2nid(mdoid
);
392 /* Look for digest type to match signature */
396 chain
= BIO_find_type(chain
, BIO_TYPE_MD
);
399 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX
,
400 CMS_R_NO_MATCHING_DIGEST
);
403 BIO_get_md_ctx(chain
, &mtmp
);
404 if (EVP_MD_CTX_type(mtmp
) == nid
)
406 EVP_MD_CTX_copy_ex(mctx
, mtmp
);
409 chain
= BIO_next(chain
);
413 STACK_OF(CMS_CertificateChoices
) **cms_get0_certificate_choices(CMS_ContentInfo
*cms
)
415 switch (OBJ_obj2nid(cms
->contentType
))
418 case NID_pkcs7_signed
:
419 return &cms
->d
.signedData
->certificates
;
421 case NID_pkcs7_enveloped
:
422 return &cms
->d
.envelopedData
->originatorInfo
->certificates
;
425 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES
,
426 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
432 CMS_CertificateChoices
*CMS_add0_CertificateChoices(CMS_ContentInfo
*cms
)
434 STACK_OF(CMS_CertificateChoices
) **pcerts
;
435 CMS_CertificateChoices
*cch
;
436 pcerts
= cms_get0_certificate_choices(cms
);
440 *pcerts
= sk_CMS_CertificateChoices_new_null();
443 cch
= M_ASN1_new_of(CMS_CertificateChoices
);
446 if (!sk_CMS_CertificateChoices_push(*pcerts
, cch
))
448 M_ASN1_free_of(cch
, CMS_CertificateChoices
);
454 int CMS_add0_cert(CMS_ContentInfo
*cms
, X509
*cert
)
456 CMS_CertificateChoices
*cch
;
457 STACK_OF(CMS_CertificateChoices
) **pcerts
;
459 pcerts
= cms_get0_certificate_choices(cms
);
464 for (i
= 0; i
< sk_CMS_CertificateChoices_num(*pcerts
); i
++)
466 cch
= sk_CMS_CertificateChoices_value(*pcerts
, i
);
467 if (cch
->type
== CMS_CERTCHOICE_CERT
)
469 if (!X509_cmp(cch
->d
.certificate
, cert
))
474 cch
= CMS_add0_CertificateChoices(cms
);
477 cch
->type
= CMS_CERTCHOICE_CERT
;
478 cch
->d
.certificate
= cert
;
482 int CMS_add1_cert(CMS_ContentInfo
*cms
, X509
*cert
)
485 r
= CMS_add0_cert(cms
, cert
);
487 CRYPTO_add(&cert
->references
, 1, CRYPTO_LOCK_X509
);
491 STACK_OF(CMS_RevocationInfoChoice
) **cms_get0_revocation_choices(CMS_ContentInfo
*cms
)
493 switch (OBJ_obj2nid(cms
->contentType
))
496 case NID_pkcs7_signed
:
497 return &cms
->d
.signedData
->crls
;
499 case NID_pkcs7_enveloped
:
500 return &cms
->d
.envelopedData
->originatorInfo
->crls
;
503 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES
,
504 CMS_R_UNSUPPORTED_CONTENT_TYPE
);
510 CMS_RevocationInfoChoice
*CMS_add0_RevocationInfoChoice(CMS_ContentInfo
*cms
)
512 STACK_OF(CMS_RevocationInfoChoice
) **pcrls
;
513 CMS_RevocationInfoChoice
*rch
;
514 pcrls
= cms_get0_revocation_choices(cms
);
518 *pcrls
= sk_CMS_RevocationInfoChoice_new_null();
521 rch
= M_ASN1_new_of(CMS_RevocationInfoChoice
);
524 if (!sk_CMS_RevocationInfoChoice_push(*pcrls
, rch
))
526 M_ASN1_free_of(rch
, CMS_RevocationInfoChoice
);
532 int CMS_add0_crl(CMS_ContentInfo
*cms
, X509_CRL
*crl
)
534 CMS_RevocationInfoChoice
*rch
;
535 rch
= CMS_add0_RevocationInfoChoice(cms
);
538 rch
->type
= CMS_REVCHOICE_CRL
;
543 STACK_OF(X509
) *CMS_get1_certs(CMS_ContentInfo
*cms
)
545 STACK_OF(X509
) *certs
= NULL
;
546 CMS_CertificateChoices
*cch
;
547 STACK_OF(CMS_CertificateChoices
) **pcerts
;
549 pcerts
= cms_get0_certificate_choices(cms
);
552 for (i
= 0; i
< sk_CMS_CertificateChoices_num(*pcerts
); i
++)
554 cch
= sk_CMS_CertificateChoices_value(*pcerts
, i
);
559 certs
= sk_X509_new_null();
563 if (!sk_X509_push(certs
, cch
->d
.certificate
))
565 sk_X509_pop_free(certs
, X509_free
);
568 CRYPTO_add(&cch
->d
.certificate
->references
,
569 1, CRYPTO_LOCK_X509
);
576 STACK_OF(X509_CRL
) *CMS_get1_crls(CMS_ContentInfo
*cms
)
578 STACK_OF(X509_CRL
) *crls
= NULL
;
579 STACK_OF(CMS_RevocationInfoChoice
) **pcrls
;
580 CMS_RevocationInfoChoice
*rch
;
582 pcrls
= cms_get0_revocation_choices(cms
);
585 for (i
= 0; i
< sk_CMS_RevocationInfoChoice_num(*pcrls
); i
++)
587 rch
= sk_CMS_RevocationInfoChoice_value(*pcrls
, i
);
592 crls
= sk_X509_CRL_new_null();
596 if (!sk_X509_CRL_push(crls
, rch
->d
.crl
))
598 sk_X509_CRL_pop_free(crls
, X509_CRL_free
);
601 CRYPTO_add(&rch
->d
.crl
->references
,
602 1, CRYPTO_LOCK_X509_CRL
);