2 * Copyright 2008-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "internal/cryptlib.h"
11 #include <openssl/asn1t.h>
12 #include <openssl/x509.h>
13 #include <openssl/x509v3.h>
14 #include <openssl/err.h>
15 #include <openssl/cms.h>
17 #include "crypto/asn1.h"
19 static BIO
*cms_get_text_bio(BIO
*out
, unsigned int flags
)
23 rbio
= BIO_new(BIO_s_null());
24 else if (flags
& CMS_TEXT
) {
25 rbio
= BIO_new(BIO_s_mem());
26 BIO_set_mem_eof_return(rbio
, 0);
32 static int cms_copy_content(BIO
*out
, BIO
*in
, unsigned int flags
)
34 unsigned char buf
[4096];
38 tmpout
= cms_get_text_bio(out
, flags
);
41 CMSerr(CMS_F_CMS_COPY_CONTENT
, ERR_R_MALLOC_FAILURE
);
45 /* Read all content through chain to process digest, decrypt etc */
47 i
= BIO_read(in
, buf
, sizeof(buf
));
49 if (BIO_method_type(in
) == BIO_TYPE_CIPHER
) {
50 if (!BIO_get_cipher_status(in
))
58 if (tmpout
&& (BIO_write(tmpout
, buf
, i
) != i
))
62 if (flags
& CMS_TEXT
) {
63 if (!SMIME_text(tmpout
, out
)) {
64 CMSerr(CMS_F_CMS_COPY_CONTENT
, CMS_R_SMIME_TEXT_ERROR
);
78 static int check_content(CMS_ContentInfo
*cms
)
80 ASN1_OCTET_STRING
**pos
= CMS_get0_content(cms
);
82 CMSerr(CMS_F_CHECK_CONTENT
, CMS_R_NO_CONTENT
);
88 static void do_free_upto(BIO
*f
, BIO
*upto
)
97 while (f
&& f
!= upto
);
102 int CMS_data(CMS_ContentInfo
*cms
, BIO
*out
, unsigned int flags
)
106 if (OBJ_obj2nid(CMS_get0_type(cms
)) != NID_pkcs7_data
) {
107 CMSerr(CMS_F_CMS_DATA
, CMS_R_TYPE_NOT_DATA
);
110 cont
= CMS_dataInit(cms
, NULL
);
113 r
= cms_copy_content(out
, cont
, flags
);
118 CMS_ContentInfo
*CMS_data_create(BIO
*in
, unsigned int flags
)
120 CMS_ContentInfo
*cms
;
121 cms
= cms_Data_create();
125 if ((flags
& CMS_STREAM
) || CMS_final(cms
, in
, NULL
, flags
))
128 CMS_ContentInfo_free(cms
);
133 int CMS_digest_verify(CMS_ContentInfo
*cms
, BIO
*dcont
, BIO
*out
,
138 if (OBJ_obj2nid(CMS_get0_type(cms
)) != NID_pkcs7_digest
) {
139 CMSerr(CMS_F_CMS_DIGEST_VERIFY
, CMS_R_TYPE_NOT_DIGESTED_DATA
);
143 if (!dcont
&& !check_content(cms
))
146 cont
= CMS_dataInit(cms
, dcont
);
149 r
= cms_copy_content(out
, cont
, flags
);
151 r
= cms_DigestedData_do_final(cms
, cont
, 1);
152 do_free_upto(cont
, dcont
);
156 CMS_ContentInfo
*CMS_digest_create(BIO
*in
, const EVP_MD
*md
,
159 CMS_ContentInfo
*cms
;
162 cms
= cms_DigestedData_create(md
);
166 if (!(flags
& CMS_DETACHED
))
167 CMS_set_detached(cms
, 0);
169 if ((flags
& CMS_STREAM
) || CMS_final(cms
, in
, NULL
, flags
))
172 CMS_ContentInfo_free(cms
);
176 int CMS_EncryptedData_decrypt(CMS_ContentInfo
*cms
,
177 const unsigned char *key
, size_t keylen
,
178 BIO
*dcont
, BIO
*out
, unsigned int flags
)
182 if (OBJ_obj2nid(CMS_get0_type(cms
)) != NID_pkcs7_encrypted
) {
183 CMSerr(CMS_F_CMS_ENCRYPTEDDATA_DECRYPT
,
184 CMS_R_TYPE_NOT_ENCRYPTED_DATA
);
188 if (!dcont
&& !check_content(cms
))
191 if (CMS_EncryptedData_set1_key(cms
, NULL
, key
, keylen
) <= 0)
193 cont
= CMS_dataInit(cms
, dcont
);
196 r
= cms_copy_content(out
, cont
, flags
);
197 do_free_upto(cont
, dcont
);
201 CMS_ContentInfo
*CMS_EncryptedData_encrypt(BIO
*in
, const EVP_CIPHER
*cipher
,
202 const unsigned char *key
,
203 size_t keylen
, unsigned int flags
)
205 CMS_ContentInfo
*cms
;
207 CMSerr(CMS_F_CMS_ENCRYPTEDDATA_ENCRYPT
, CMS_R_NO_CIPHER
);
210 cms
= CMS_ContentInfo_new();
213 if (!CMS_EncryptedData_set1_key(cms
, cipher
, key
, keylen
))
216 if (!(flags
& CMS_DETACHED
))
217 CMS_set_detached(cms
, 0);
219 if ((flags
& (CMS_STREAM
| CMS_PARTIAL
))
220 || CMS_final(cms
, in
, NULL
, flags
))
223 CMS_ContentInfo_free(cms
);
227 static int cms_signerinfo_verify_cert(CMS_SignerInfo
*si
,
229 STACK_OF(X509
) *certs
,
230 STACK_OF(X509_CRL
) *crls
)
232 X509_STORE_CTX
*ctx
= X509_STORE_CTX_new();
237 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT
, ERR_R_MALLOC_FAILURE
);
240 CMS_SignerInfo_get0_algs(si
, NULL
, &signer
, NULL
, NULL
);
241 if (!X509_STORE_CTX_init(ctx
, store
, signer
, certs
)) {
242 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT
, CMS_R_STORE_INIT_ERROR
);
245 X509_STORE_CTX_set_default(ctx
, "smime_sign");
247 X509_STORE_CTX_set0_crls(ctx
, crls
);
249 i
= X509_verify_cert(ctx
);
251 j
= X509_STORE_CTX_get_error(ctx
);
252 CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT
,
253 CMS_R_CERTIFICATE_VERIFY_ERROR
);
254 ERR_add_error_data(2, "Verify error:",
255 X509_verify_cert_error_string(j
));
260 X509_STORE_CTX_free(ctx
);
265 int CMS_verify(CMS_ContentInfo
*cms
, STACK_OF(X509
) *certs
,
266 X509_STORE
*store
, BIO
*dcont
, BIO
*out
, unsigned int flags
)
269 STACK_OF(CMS_SignerInfo
) *sinfos
;
270 STACK_OF(X509
) *cms_certs
= NULL
;
271 STACK_OF(X509_CRL
) *crls
= NULL
;
273 int i
, scount
= 0, ret
= 0;
274 BIO
*cmsbio
= NULL
, *tmpin
= NULL
, *tmpout
= NULL
;
276 if (!dcont
&& !check_content(cms
))
278 if (dcont
&& !(flags
& CMS_BINARY
)) {
279 const ASN1_OBJECT
*coid
= CMS_get0_eContentType(cms
);
280 if (OBJ_obj2nid(coid
) == NID_id_ct_asciiTextWithCRLF
)
281 flags
|= CMS_ASCIICRLF
;
284 /* Attempt to find all signer certificates */
286 sinfos
= CMS_get0_SignerInfos(cms
);
288 if (sk_CMS_SignerInfo_num(sinfos
) <= 0) {
289 CMSerr(CMS_F_CMS_VERIFY
, CMS_R_NO_SIGNERS
);
293 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++) {
294 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
295 CMS_SignerInfo_get0_algs(si
, NULL
, &signer
, NULL
, NULL
);
300 if (scount
!= sk_CMS_SignerInfo_num(sinfos
))
301 scount
+= CMS_set1_signers_certs(cms
, certs
, flags
);
303 if (scount
!= sk_CMS_SignerInfo_num(sinfos
)) {
304 CMSerr(CMS_F_CMS_VERIFY
, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND
);
308 /* Attempt to verify all signers certs */
310 if (!(flags
& CMS_NO_SIGNER_CERT_VERIFY
)) {
311 cms_certs
= CMS_get1_certs(cms
);
312 if (!(flags
& CMS_NOCRL
))
313 crls
= CMS_get1_crls(cms
);
314 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++) {
315 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
316 if (!cms_signerinfo_verify_cert(si
, store
, cms_certs
, crls
))
321 /* Attempt to verify all SignerInfo signed attribute signatures */
323 if (!(flags
& CMS_NO_ATTR_VERIFY
)) {
324 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++) {
325 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
326 if (CMS_signed_get_attr_count(si
) < 0)
328 if (CMS_SignerInfo_verify(si
) <= 0)
334 * Performance optimization: if the content is a memory BIO then store
335 * its contents in a temporary read only memory BIO. This avoids
336 * potentially large numbers of slow copies of data which will occur when
337 * reading from a read write memory BIO when signatures are calculated.
340 if (dcont
&& (BIO_method_type(dcont
) == BIO_TYPE_MEM
)) {
343 len
= BIO_get_mem_data(dcont
, &ptr
);
344 tmpin
= BIO_new_mem_buf(ptr
, len
);
346 CMSerr(CMS_F_CMS_VERIFY
, ERR_R_MALLOC_FAILURE
);
352 * If not binary mode and detached generate digests by *writing* through
353 * the BIO. That makes it possible to canonicalise the input.
355 if (!(flags
& SMIME_BINARY
) && dcont
) {
357 * Create output BIO so we can either handle text or to ensure
358 * included content doesn't override detached content.
360 tmpout
= cms_get_text_bio(out
, flags
);
362 CMSerr(CMS_F_CMS_VERIFY
, ERR_R_MALLOC_FAILURE
);
365 cmsbio
= CMS_dataInit(cms
, tmpout
);
369 * Don't use SMIME_TEXT for verify: it adds headers and we want to
372 SMIME_crlf_copy(dcont
, cmsbio
, flags
& ~SMIME_TEXT
);
374 if (flags
& CMS_TEXT
) {
375 if (!SMIME_text(tmpout
, out
)) {
376 CMSerr(CMS_F_CMS_VERIFY
, CMS_R_SMIME_TEXT_ERROR
);
381 cmsbio
= CMS_dataInit(cms
, tmpin
);
385 if (!cms_copy_content(out
, cmsbio
, flags
))
389 if (!(flags
& CMS_NO_CONTENT_VERIFY
)) {
390 for (i
= 0; i
< sk_CMS_SignerInfo_num(sinfos
); i
++) {
391 si
= sk_CMS_SignerInfo_value(sinfos
, i
);
392 if (CMS_SignerInfo_verify_content(si
, cmsbio
) <= 0) {
393 CMSerr(CMS_F_CMS_VERIFY
, CMS_R_CONTENT_VERIFY_ERROR
);
402 if (!(flags
& SMIME_BINARY
) && dcont
) {
403 do_free_upto(cmsbio
, tmpout
);
407 if (dcont
&& (tmpin
== dcont
))
408 do_free_upto(cmsbio
, dcont
);
410 BIO_free_all(cmsbio
);
414 BIO_free_all(tmpout
);
417 sk_X509_pop_free(cms_certs
, X509_free
);
418 sk_X509_CRL_pop_free(crls
, X509_CRL_free
);
423 int CMS_verify_receipt(CMS_ContentInfo
*rcms
, CMS_ContentInfo
*ocms
,
424 STACK_OF(X509
) *certs
,
425 X509_STORE
*store
, unsigned int flags
)
428 flags
&= ~(CMS_DETACHED
| CMS_TEXT
);
429 r
= CMS_verify(rcms
, certs
, store
, NULL
, NULL
, flags
);
432 return cms_Receipt_verify(rcms
, ocms
);
435 CMS_ContentInfo
*CMS_sign(X509
*signcert
, EVP_PKEY
*pkey
,
436 STACK_OF(X509
) *certs
, BIO
*data
,
439 CMS_ContentInfo
*cms
;
442 cms
= CMS_ContentInfo_new();
443 if (cms
== NULL
|| !CMS_SignedData_init(cms
))
445 if (flags
& CMS_ASCIICRLF
446 && !CMS_set1_eContentType(cms
,
447 OBJ_nid2obj(NID_id_ct_asciiTextWithCRLF
)))
450 if (pkey
&& !CMS_add1_signer(cms
, signcert
, pkey
, NULL
, flags
)) {
451 CMSerr(CMS_F_CMS_SIGN
, CMS_R_ADD_SIGNER_ERROR
);
455 for (i
= 0; i
< sk_X509_num(certs
); i
++) {
456 X509
*x
= sk_X509_value(certs
, i
);
457 if (!CMS_add1_cert(cms
, x
))
461 if (!(flags
& CMS_DETACHED
))
462 CMS_set_detached(cms
, 0);
464 if ((flags
& (CMS_STREAM
| CMS_PARTIAL
))
465 || CMS_final(cms
, data
, NULL
, flags
))
471 CMSerr(CMS_F_CMS_SIGN
, ERR_R_MALLOC_FAILURE
);
474 CMS_ContentInfo_free(cms
);
478 CMS_ContentInfo
*CMS_sign_receipt(CMS_SignerInfo
*si
,
479 X509
*signcert
, EVP_PKEY
*pkey
,
480 STACK_OF(X509
) *certs
, unsigned int flags
)
482 CMS_SignerInfo
*rct_si
;
483 CMS_ContentInfo
*cms
= NULL
;
484 ASN1_OCTET_STRING
**pos
, *os
;
485 BIO
*rct_cont
= NULL
;
488 flags
&= ~(CMS_STREAM
| CMS_TEXT
);
489 /* Not really detached but avoids content being allocated */
490 flags
|= CMS_PARTIAL
| CMS_BINARY
| CMS_DETACHED
;
491 if (!pkey
|| !signcert
) {
492 CMSerr(CMS_F_CMS_SIGN_RECEIPT
, CMS_R_NO_KEY_OR_CERT
);
496 /* Initialize signed data */
498 cms
= CMS_sign(NULL
, NULL
, certs
, NULL
, flags
);
502 /* Set inner content type to signed receipt */
503 if (!CMS_set1_eContentType(cms
, OBJ_nid2obj(NID_id_smime_ct_receipt
)))
506 rct_si
= CMS_add1_signer(cms
, signcert
, pkey
, NULL
, flags
);
508 CMSerr(CMS_F_CMS_SIGN_RECEIPT
, CMS_R_ADD_SIGNER_ERROR
);
512 os
= cms_encode_Receipt(si
);
517 /* Set content to digest */
518 rct_cont
= BIO_new_mem_buf(os
->data
, os
->length
);
522 /* Add msgSigDigest attribute */
524 if (!cms_msgSigDigest_add1(rct_si
, si
))
527 /* Finalize structure */
528 if (!CMS_final(cms
, rct_cont
, NULL
, flags
))
531 /* Set embedded content */
532 pos
= CMS_get0_content(cms
);
541 CMS_ContentInfo_free(cms
);
546 CMS_ContentInfo
*CMS_encrypt(STACK_OF(X509
) *certs
, BIO
*data
,
547 const EVP_CIPHER
*cipher
, unsigned int flags
)
549 CMS_ContentInfo
*cms
;
552 cms
= CMS_EnvelopedData_create(cipher
);
555 for (i
= 0; i
< sk_X509_num(certs
); i
++) {
556 recip
= sk_X509_value(certs
, i
);
557 if (!CMS_add1_recipient_cert(cms
, recip
, flags
)) {
558 CMSerr(CMS_F_CMS_ENCRYPT
, CMS_R_RECIPIENT_ERROR
);
563 if (!(flags
& CMS_DETACHED
))
564 CMS_set_detached(cms
, 0);
566 if ((flags
& (CMS_STREAM
| CMS_PARTIAL
))
567 || CMS_final(cms
, data
, NULL
, flags
))
573 CMSerr(CMS_F_CMS_ENCRYPT
, ERR_R_MALLOC_FAILURE
);
575 CMS_ContentInfo_free(cms
);
579 static int cms_kari_set1_pkey(CMS_ContentInfo
*cms
, CMS_RecipientInfo
*ri
,
580 EVP_PKEY
*pk
, X509
*cert
)
583 STACK_OF(CMS_RecipientEncryptedKey
) *reks
;
584 CMS_RecipientEncryptedKey
*rek
;
585 reks
= CMS_RecipientInfo_kari_get0_reks(ri
);
586 for (i
= 0; i
< sk_CMS_RecipientEncryptedKey_num(reks
); i
++) {
588 rek
= sk_CMS_RecipientEncryptedKey_value(reks
, i
);
589 if (cert
!= NULL
&& CMS_RecipientEncryptedKey_cert_cmp(rek
, cert
))
591 CMS_RecipientInfo_kari_set0_pkey(ri
, pk
);
592 rv
= CMS_RecipientInfo_kari_decrypt(cms
, ri
, rek
);
593 CMS_RecipientInfo_kari_set0_pkey(ri
, NULL
);
596 return cert
== NULL
? 0 : -1;
601 int CMS_decrypt_set1_pkey(CMS_ContentInfo
*cms
, EVP_PKEY
*pk
, X509
*cert
)
603 STACK_OF(CMS_RecipientInfo
) *ris
;
604 CMS_RecipientInfo
*ri
;
606 int debug
= 0, match_ri
= 0;
607 ris
= CMS_get0_RecipientInfos(cms
);
609 debug
= cms
->d
.envelopedData
->encryptedContentInfo
->debug
;
610 ri_type
= cms_pkey_get_ri_type(pk
);
611 if (ri_type
== CMS_RECIPINFO_NONE
) {
612 CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY
,
613 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
);
617 for (i
= 0; i
< sk_CMS_RecipientInfo_num(ris
); i
++) {
618 ri
= sk_CMS_RecipientInfo_value(ris
, i
);
619 if (CMS_RecipientInfo_type(ri
) != ri_type
)
622 if (ri_type
== CMS_RECIPINFO_AGREE
) {
623 r
= cms_kari_set1_pkey(cms
, ri
, pk
, cert
);
630 * If we have a cert try matching RecipientInfo otherwise try them
633 else if (!cert
|| !CMS_RecipientInfo_ktri_cert_cmp(ri
, cert
)) {
635 CMS_RecipientInfo_set0_pkey(ri
, pk
);
636 r
= CMS_RecipientInfo_decrypt(cms
, ri
);
637 CMS_RecipientInfo_set0_pkey(ri
, NULL
);
640 * If not debugging clear any error and return success to
641 * avoid leaking of information useful to MMA
649 CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY
, CMS_R_DECRYPT_ERROR
);
653 * If no cert and not debugging don't leave loop after first
654 * successful decrypt. Always attempt to decrypt all recipients
655 * to avoid leaking timing of a successful decrypt.
657 else if (r
> 0 && debug
)
661 /* If no cert, key transport and not debugging always return success */
662 if (cert
== NULL
&& ri_type
== CMS_RECIPINFO_TRANS
&& match_ri
&& !debug
) {
667 CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY
, CMS_R_NO_MATCHING_RECIPIENT
);
672 int CMS_decrypt_set1_key(CMS_ContentInfo
*cms
,
673 unsigned char *key
, size_t keylen
,
674 const unsigned char *id
, size_t idlen
)
676 STACK_OF(CMS_RecipientInfo
) *ris
;
677 CMS_RecipientInfo
*ri
;
679 ris
= CMS_get0_RecipientInfos(cms
);
680 for (i
= 0; i
< sk_CMS_RecipientInfo_num(ris
); i
++) {
681 ri
= sk_CMS_RecipientInfo_value(ris
, i
);
682 if (CMS_RecipientInfo_type(ri
) != CMS_RECIPINFO_KEK
)
686 * If we have an id try matching RecipientInfo otherwise try them
689 if (!id
|| (CMS_RecipientInfo_kekri_id_cmp(ri
, id
, idlen
) == 0)) {
690 CMS_RecipientInfo_set0_key(ri
, key
, keylen
);
691 r
= CMS_RecipientInfo_decrypt(cms
, ri
);
692 CMS_RecipientInfo_set0_key(ri
, NULL
, 0);
696 CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY
, CMS_R_DECRYPT_ERROR
);
703 CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY
, CMS_R_NO_MATCHING_RECIPIENT
);
708 int CMS_decrypt_set1_password(CMS_ContentInfo
*cms
,
709 unsigned char *pass
, ossl_ssize_t passlen
)
711 STACK_OF(CMS_RecipientInfo
) *ris
;
712 CMS_RecipientInfo
*ri
;
714 ris
= CMS_get0_RecipientInfos(cms
);
715 for (i
= 0; i
< sk_CMS_RecipientInfo_num(ris
); i
++) {
716 ri
= sk_CMS_RecipientInfo_value(ris
, i
);
717 if (CMS_RecipientInfo_type(ri
) != CMS_RECIPINFO_PASS
)
719 CMS_RecipientInfo_set0_password(ri
, pass
, passlen
);
720 r
= CMS_RecipientInfo_decrypt(cms
, ri
);
721 CMS_RecipientInfo_set0_password(ri
, NULL
, 0);
726 CMSerr(CMS_F_CMS_DECRYPT_SET1_PASSWORD
, CMS_R_NO_MATCHING_RECIPIENT
);
731 int CMS_decrypt(CMS_ContentInfo
*cms
, EVP_PKEY
*pk
, X509
*cert
,
732 BIO
*dcont
, BIO
*out
, unsigned int flags
)
736 if (OBJ_obj2nid(CMS_get0_type(cms
)) != NID_pkcs7_enveloped
) {
737 CMSerr(CMS_F_CMS_DECRYPT
, CMS_R_TYPE_NOT_ENVELOPED_DATA
);
740 if (!dcont
&& !check_content(cms
))
742 if (flags
& CMS_DEBUG_DECRYPT
)
743 cms
->d
.envelopedData
->encryptedContentInfo
->debug
= 1;
745 cms
->d
.envelopedData
->encryptedContentInfo
->debug
= 0;
747 cms
->d
.envelopedData
->encryptedContentInfo
->havenocert
= 1;
749 cms
->d
.envelopedData
->encryptedContentInfo
->havenocert
= 0;
750 if (!pk
&& !cert
&& !dcont
&& !out
)
752 if (pk
&& !CMS_decrypt_set1_pkey(cms
, pk
, cert
))
754 cont
= CMS_dataInit(cms
, dcont
);
757 r
= cms_copy_content(out
, cont
, flags
);
758 do_free_upto(cont
, dcont
);
762 int CMS_final(CMS_ContentInfo
*cms
, BIO
*data
, BIO
*dcont
, unsigned int flags
)
767 if ((cmsbio
= CMS_dataInit(cms
, dcont
)) == NULL
) {
768 CMSerr(CMS_F_CMS_FINAL
, CMS_R_CMS_LIB
);
772 SMIME_crlf_copy(data
, cmsbio
, flags
);
774 (void)BIO_flush(cmsbio
);
776 if (!CMS_dataFinal(cms
, cmsbio
)) {
777 CMSerr(CMS_F_CMS_FINAL
, CMS_R_CMS_DATAFINAL_ERROR
);
784 do_free_upto(cmsbio
, dcont
);
792 int CMS_uncompress(CMS_ContentInfo
*cms
, BIO
*dcont
, BIO
*out
,
797 if (OBJ_obj2nid(CMS_get0_type(cms
)) != NID_id_smime_ct_compressedData
) {
798 CMSerr(CMS_F_CMS_UNCOMPRESS
, CMS_R_TYPE_NOT_COMPRESSED_DATA
);
802 if (!dcont
&& !check_content(cms
))
805 cont
= CMS_dataInit(cms
, dcont
);
808 r
= cms_copy_content(out
, cont
, flags
);
809 do_free_upto(cont
, dcont
);
813 CMS_ContentInfo
*CMS_compress(BIO
*in
, int comp_nid
, unsigned int flags
)
815 CMS_ContentInfo
*cms
;
817 comp_nid
= NID_zlib_compression
;
818 cms
= cms_CompressedData_create(comp_nid
);
822 if (!(flags
& CMS_DETACHED
))
823 CMS_set_detached(cms
, 0);
825 if ((flags
& CMS_STREAM
) || CMS_final(cms
, in
, NULL
, flags
))
828 CMS_ContentInfo_free(cms
);
834 int CMS_uncompress(CMS_ContentInfo
*cms
, BIO
*dcont
, BIO
*out
,
837 CMSerr(CMS_F_CMS_UNCOMPRESS
, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);
841 CMS_ContentInfo
*CMS_compress(BIO
*in
, int comp_nid
, unsigned int flags
)
843 CMSerr(CMS_F_CMS_COMPRESS
, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM
);