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);
140 case NID_pkcs7_enveloped:
141 cmsbio = cms_EnvelopedData_init_bio(cms);
145 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
150 return BIO_push(cmsbio, cont);
158 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
160 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
163 /* If ebmedded content find memory BIO and set content */
164 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT))
169 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
172 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
175 contlen = BIO_get_mem_data(mbio, &cont);
176 /* Set bio as read only so its content can't be clobbered */
177 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
178 BIO_set_mem_eof_return(mbio, 0);
179 ASN1_STRING_set0(*pos, cont, contlen);
180 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
183 switch (OBJ_obj2nid(cms->contentType))
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 if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT)
350 param_type = V_ASN1_UNDEF;
352 param_type = V_ASN1_NULL;
354 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL);
358 /* Create a digest BIO from an X509_ALGOR structure */
360 BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
363 ASN1_OBJECT *digestoid;
364 const EVP_MD *digest;
365 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
366 digest = EVP_get_digestbyobj(digestoid);
369 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
370 CMS_R_UNKNOWN_DIGEST_ALGORIHM);
373 mdbio = BIO_new(BIO_f_md());
374 if (!mdbio || !BIO_set_md(mdbio, digest))
376 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
377 CMS_R_MD_BIO_INIT_ERROR);
387 /* Locate a message digest content from a BIO chain based on SignerInfo */
389 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
394 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
395 nid = OBJ_obj2nid(mdoid);
396 /* Look for digest type to match signature */
400 chain = BIO_find_type(chain, BIO_TYPE_MD);
403 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
404 CMS_R_NO_MATCHING_DIGEST);
407 BIO_get_md_ctx(chain, &mtmp);
408 if (EVP_MD_CTX_type(mtmp) == nid)
410 EVP_MD_CTX_copy_ex(mctx, mtmp);
413 chain = BIO_next(chain);
417 STACK_OF(CMS_CertificateChoices) **cms_get0_certificate_choices(CMS_ContentInfo *cms)
419 switch (OBJ_obj2nid(cms->contentType))
422 case NID_pkcs7_signed:
423 return &cms->d.signedData->certificates;
425 case NID_pkcs7_enveloped:
426 return &cms->d.envelopedData->originatorInfo->certificates;
429 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
430 CMS_R_UNSUPPORTED_CONTENT_TYPE);
436 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
438 STACK_OF(CMS_CertificateChoices) **pcerts;
439 CMS_CertificateChoices *cch;
440 pcerts = cms_get0_certificate_choices(cms);
444 *pcerts = sk_CMS_CertificateChoices_new_null();
447 cch = M_ASN1_new_of(CMS_CertificateChoices);
450 if (!sk_CMS_CertificateChoices_push(*pcerts, cch))
452 M_ASN1_free_of(cch, CMS_CertificateChoices);
458 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
460 CMS_CertificateChoices *cch;
461 STACK_OF(CMS_CertificateChoices) **pcerts;
463 pcerts = cms_get0_certificate_choices(cms);
468 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++)
470 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
471 if (cch->type == CMS_CERTCHOICE_CERT)
473 if (!X509_cmp(cch->d.certificate, cert))
478 cch = CMS_add0_CertificateChoices(cms);
481 cch->type = CMS_CERTCHOICE_CERT;
482 cch->d.certificate = cert;
486 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
489 r = CMS_add0_cert(cms, cert);
491 CRYPTO_add(&cert->references, 1, CRYPTO_LOCK_X509);
495 STACK_OF(CMS_RevocationInfoChoice) **cms_get0_revocation_choices(CMS_ContentInfo *cms)
497 switch (OBJ_obj2nid(cms->contentType))
500 case NID_pkcs7_signed:
501 return &cms->d.signedData->crls;
503 case NID_pkcs7_enveloped:
504 return &cms->d.envelopedData->originatorInfo->crls;
507 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
508 CMS_R_UNSUPPORTED_CONTENT_TYPE);
514 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
516 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
517 CMS_RevocationInfoChoice *rch;
518 pcrls = cms_get0_revocation_choices(cms);
522 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
525 rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
528 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch))
530 M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
536 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
538 CMS_RevocationInfoChoice *rch;
539 rch = CMS_add0_RevocationInfoChoice(cms);
542 rch->type = CMS_REVCHOICE_CRL;
547 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
549 STACK_OF(X509) *certs = NULL;
550 CMS_CertificateChoices *cch;
551 STACK_OF(CMS_CertificateChoices) **pcerts;
553 pcerts = cms_get0_certificate_choices(cms);
556 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++)
558 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
563 certs = sk_X509_new_null();
567 if (!sk_X509_push(certs, cch->d.certificate))
569 sk_X509_pop_free(certs, X509_free);
572 CRYPTO_add(&cch->d.certificate->references,
573 1, CRYPTO_LOCK_X509);
580 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
582 STACK_OF(X509_CRL) *crls = NULL;
583 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
584 CMS_RevocationInfoChoice *rch;
586 pcrls = cms_get0_revocation_choices(cms);
589 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++)
591 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
596 crls = sk_X509_CRL_new_null();
600 if (!sk_X509_CRL_push(crls, rch->d.crl))
602 sk_X509_CRL_pop_free(crls, X509_CRL_free);
605 CRYPTO_add(&rch->d.crl->references,
606 1, CRYPTO_LOCK_X509_CRL);