1 /* crypto/cms/cms_lib.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
55 #include <openssl/asn1t.h>
56 #include <openssl/x509v3.h>
57 #include <openssl/err.h>
58 #include <openssl/pem.h>
59 #include <openssl/bio.h>
60 #include <openssl/asn1.h>
61 #include <openssl/cms.h>
64 IMPLEMENT_ASN1_FUNCTIONS(CMS_ContentInfo)
65 IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
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();
80 cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
82 CMS_set_detached(cms, 0);
87 BIO *cms_content_bio(CMS_ContentInfo *cms)
89 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
92 /* If content detached data goes nowhere: create NULL BIO */
94 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);
112 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_NO_CONTENT);
115 switch (OBJ_obj2nid(cms->contentType)) {
120 case NID_pkcs7_signed:
121 cmsbio = cms_SignedData_init_bio(cms);
124 case NID_pkcs7_digest:
125 cmsbio = cms_DigestedData_init_bio(cms);
128 case NID_id_smime_ct_compressedData:
129 cmsbio = cms_CompressedData_init_bio(cms);
133 case NID_pkcs7_encrypted:
134 cmsbio = cms_EncryptedData_init_bio(cms);
137 case NID_pkcs7_enveloped:
138 cmsbio = cms_EnvelopedData_init_bio(cms);
142 CMSerr(CMS_F_CMS_DATAINIT, CMS_R_UNSUPPORTED_TYPE);
147 return BIO_push(cmsbio, cont);
155 int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
157 ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
160 /* If ebmedded content find memory BIO and set content */
161 if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
165 mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
167 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
170 contlen = BIO_get_mem_data(mbio, &cont);
171 /* Set bio as read only so its content can't be clobbered */
172 BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
173 BIO_set_mem_eof_return(mbio, 0);
174 ASN1_STRING_set0(*pos, cont, contlen);
175 (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
178 switch (OBJ_obj2nid(cms->contentType)) {
181 case NID_pkcs7_enveloped:
182 case NID_pkcs7_encrypted:
183 case NID_id_smime_ct_compressedData:
187 case NID_pkcs7_signed:
188 return cms_SignedData_final(cms, cmsbio);
190 case NID_pkcs7_digest:
191 return cms_DigestedData_do_final(cms, cmsbio, 0);
194 CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
200 * Return an OCTET STRING pointer to content. This allows it to be accessed
204 ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
206 switch (OBJ_obj2nid(cms->contentType)) {
211 case NID_pkcs7_signed:
212 return &cms->d.signedData->encapContentInfo->eContent;
214 case NID_pkcs7_enveloped:
215 return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
217 case NID_pkcs7_digest:
218 return &cms->d.digestedData->encapContentInfo->eContent;
220 case NID_pkcs7_encrypted:
221 return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
223 case NID_id_smime_ct_authData:
224 return &cms->d.authenticatedData->encapContentInfo->eContent;
226 case NID_id_smime_ct_compressedData:
227 return &cms->d.compressedData->encapContentInfo->eContent;
230 if (cms->d.other->type == V_ASN1_OCTET_STRING)
231 return &cms->d.other->value.octet_string;
232 CMSerr(CMS_F_CMS_GET0_CONTENT, CMS_R_UNSUPPORTED_CONTENT_TYPE);
239 * Return an ASN1_OBJECT pointer to content type. This allows it to be
240 * accessed or set later.
243 static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
245 switch (OBJ_obj2nid(cms->contentType)) {
247 case NID_pkcs7_signed:
248 return &cms->d.signedData->encapContentInfo->eContentType;
250 case NID_pkcs7_enveloped:
251 return &cms->d.envelopedData->encryptedContentInfo->contentType;
253 case NID_pkcs7_digest:
254 return &cms->d.digestedData->encapContentInfo->eContentType;
256 case NID_pkcs7_encrypted:
257 return &cms->d.encryptedData->encryptedContentInfo->contentType;
259 case NID_id_smime_ct_authData:
260 return &cms->d.authenticatedData->encapContentInfo->eContentType;
262 case NID_id_smime_ct_compressedData:
263 return &cms->d.compressedData->encapContentInfo->eContentType;
266 CMSerr(CMS_F_CMS_GET0_ECONTENT_TYPE, CMS_R_UNSUPPORTED_CONTENT_TYPE);
272 const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
274 ASN1_OBJECT **petype;
275 petype = cms_get0_econtent_type(cms);
281 int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
283 ASN1_OBJECT **petype, *etype;
284 petype = cms_get0_econtent_type(cms);
289 etype = OBJ_dup(oid);
292 ASN1_OBJECT_free(*petype);
297 int CMS_is_detached(CMS_ContentInfo *cms)
299 ASN1_OCTET_STRING **pos;
300 pos = CMS_get0_content(cms);
308 int CMS_set_detached(CMS_ContentInfo *cms, int detached)
310 ASN1_OCTET_STRING **pos;
311 pos = CMS_get0_content(cms);
315 ASN1_OCTET_STRING_free(*pos);
320 *pos = ASN1_OCTET_STRING_new();
323 * NB: special flag to show content is created and not read in.
325 (*pos)->flags |= ASN1_STRING_FLAG_CONT;
328 CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
332 /* Create a digest BIO from an X509_ALGOR structure */
334 BIO *cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm)
337 ASN1_OBJECT *digestoid;
338 const EVP_MD *digest;
339 X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
340 digest = EVP_get_digestbyobj(digestoid);
342 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO,
343 CMS_R_UNKNOWN_DIGEST_ALGORIHM);
346 mdbio = BIO_new(BIO_f_md());
347 if (mdbio == NULL || !BIO_set_md(mdbio, digest)) {
348 CMSerr(CMS_F_CMS_DIGESTALGORITHM_INIT_BIO, CMS_R_MD_BIO_INIT_ERROR);
357 /* Locate a message digest content from a BIO chain based on SignerInfo */
359 int cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
364 X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
365 nid = OBJ_obj2nid(mdoid);
366 /* Look for digest type to match signature */
369 chain = BIO_find_type(chain, BIO_TYPE_MD);
371 CMSerr(CMS_F_CMS_DIGESTALGORITHM_FIND_CTX,
372 CMS_R_NO_MATCHING_DIGEST);
375 BIO_get_md_ctx(chain, &mtmp);
376 if (EVP_MD_CTX_type(mtmp) == nid
378 * Workaround for broken implementations that use signature
379 * algorithm OID instead of digest.
381 || EVP_MD_pkey_type(EVP_MD_CTX_md(mtmp)) == nid)
382 return EVP_MD_CTX_copy_ex(mctx, mtmp);
383 chain = BIO_next(chain);
387 static STACK_OF(CMS_CertificateChoices)
388 **cms_get0_certificate_choices(CMS_ContentInfo *cms)
390 switch (OBJ_obj2nid(cms->contentType)) {
392 case NID_pkcs7_signed:
393 return &cms->d.signedData->certificates;
395 case NID_pkcs7_enveloped:
396 return &cms->d.envelopedData->originatorInfo->certificates;
399 CMSerr(CMS_F_CMS_GET0_CERTIFICATE_CHOICES,
400 CMS_R_UNSUPPORTED_CONTENT_TYPE);
406 CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
408 STACK_OF(CMS_CertificateChoices) **pcerts;
409 CMS_CertificateChoices *cch;
410 pcerts = cms_get0_certificate_choices(cms);
414 *pcerts = sk_CMS_CertificateChoices_new_null();
417 cch = M_ASN1_new_of(CMS_CertificateChoices);
420 if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
421 M_ASN1_free_of(cch, CMS_CertificateChoices);
427 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
429 CMS_CertificateChoices *cch;
430 STACK_OF(CMS_CertificateChoices) **pcerts;
432 pcerts = cms_get0_certificate_choices(cms);
435 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
436 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
437 if (cch->type == CMS_CERTCHOICE_CERT) {
438 if (!X509_cmp(cch->d.certificate, cert)) {
439 CMSerr(CMS_F_CMS_ADD0_CERT,
440 CMS_R_CERTIFICATE_ALREADY_PRESENT);
445 cch = CMS_add0_CertificateChoices(cms);
448 cch->type = CMS_CERTCHOICE_CERT;
449 cch->d.certificate = cert;
453 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
456 r = CMS_add0_cert(cms, cert);
462 static STACK_OF(CMS_RevocationInfoChoice)
463 **cms_get0_revocation_choices(CMS_ContentInfo *cms)
465 switch (OBJ_obj2nid(cms->contentType)) {
467 case NID_pkcs7_signed:
468 return &cms->d.signedData->crls;
470 case NID_pkcs7_enveloped:
471 return &cms->d.envelopedData->originatorInfo->crls;
474 CMSerr(CMS_F_CMS_GET0_REVOCATION_CHOICES,
475 CMS_R_UNSUPPORTED_CONTENT_TYPE);
481 CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
483 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
484 CMS_RevocationInfoChoice *rch;
485 pcrls = cms_get0_revocation_choices(cms);
489 *pcrls = sk_CMS_RevocationInfoChoice_new_null();
492 rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
495 if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
496 M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
502 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
504 CMS_RevocationInfoChoice *rch;
505 rch = CMS_add0_RevocationInfoChoice(cms);
508 rch->type = CMS_REVCHOICE_CRL;
513 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
516 r = CMS_add0_crl(cms, crl);
518 X509_CRL_up_ref(crl);
522 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
524 STACK_OF(X509) *certs = NULL;
525 CMS_CertificateChoices *cch;
526 STACK_OF(CMS_CertificateChoices) **pcerts;
528 pcerts = cms_get0_certificate_choices(cms);
531 for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
532 cch = sk_CMS_CertificateChoices_value(*pcerts, i);
533 if (cch->type == 0) {
535 certs = sk_X509_new_null();
539 if (!sk_X509_push(certs, cch->d.certificate)) {
540 sk_X509_pop_free(certs, X509_free);
543 X509_up_ref(cch->d.certificate);
550 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
552 STACK_OF(X509_CRL) *crls = NULL;
553 STACK_OF(CMS_RevocationInfoChoice) **pcrls;
554 CMS_RevocationInfoChoice *rch;
556 pcrls = cms_get0_revocation_choices(cms);
559 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
560 rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
561 if (rch->type == 0) {
563 crls = sk_X509_CRL_new_null();
567 if (!sk_X509_CRL_push(crls, rch->d.crl)) {
568 sk_X509_CRL_pop_free(crls, X509_CRL_free);
571 X509_CRL_up_ref(rch->d.crl);
577 int cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
580 ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
583 return ASN1_INTEGER_cmp(ias->serialNumber, X509_get_serialNumber(cert));
586 int cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
588 const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
590 if (cert_keyid == NULL)
592 return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
595 int cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
597 CMS_IssuerAndSerialNumber *ias;
598 ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
601 if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
603 if (!ASN1_STRING_copy(ias->serialNumber, X509_get_serialNumber(cert)))
605 M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
609 M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
610 CMSerr(CMS_F_CMS_SET1_IAS, ERR_R_MALLOC_FAILURE);
614 int cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
616 ASN1_OCTET_STRING *keyid = NULL;
617 const ASN1_OCTET_STRING *cert_keyid;
618 cert_keyid = X509_get0_subject_key_id(cert);
619 if (cert_keyid == NULL) {
620 CMSerr(CMS_F_CMS_SET1_KEYID, CMS_R_CERTIFICATE_HAS_NO_KEYID);
623 keyid = ASN1_STRING_dup(cert_keyid);
625 CMSerr(CMS_F_CMS_SET1_KEYID, ERR_R_MALLOC_FAILURE);
628 ASN1_OCTET_STRING_free(*pkeyid);