1 /* crypto/pkcs7/pk7_lib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/objects.h>
62 #include <openssl/x509.h>
63 #include "asn1_locl.h"
65 long PKCS7_ctrl(PKCS7
*p7
, int cmd
, long larg
, char *parg
)
70 nid
= OBJ_obj2nid(p7
->type
);
73 case PKCS7_OP_SET_DETACHED_SIGNATURE
:
74 if (nid
== NID_pkcs7_signed
) {
75 ret
= p7
->detached
= (int)larg
;
76 if (ret
&& PKCS7_type_is_data(p7
->d
.sign
->contents
)) {
77 ASN1_OCTET_STRING
*os
;
78 os
= p7
->d
.sign
->contents
->d
.data
;
79 ASN1_OCTET_STRING_free(os
);
80 p7
->d
.sign
->contents
->d
.data
= NULL
;
83 PKCS7err(PKCS7_F_PKCS7_CTRL
,
84 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE
);
88 case PKCS7_OP_GET_DETACHED_SIGNATURE
:
89 if (nid
== NID_pkcs7_signed
) {
90 if (!p7
->d
.sign
|| !p7
->d
.sign
->contents
->d
.ptr
)
97 PKCS7err(PKCS7_F_PKCS7_CTRL
,
98 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE
);
104 PKCS7err(PKCS7_F_PKCS7_CTRL
, PKCS7_R_UNKNOWN_OPERATION
);
110 int PKCS7_content_new(PKCS7
*p7
, int type
)
114 if ((ret
= PKCS7_new()) == NULL
)
116 if (!PKCS7_set_type(ret
, type
))
118 if (!PKCS7_set_content(p7
, ret
))
128 int PKCS7_set_content(PKCS7
*p7
, PKCS7
*p7_data
)
132 i
= OBJ_obj2nid(p7
->type
);
134 case NID_pkcs7_signed
:
135 if (p7
->d
.sign
->contents
!= NULL
)
136 PKCS7_free(p7
->d
.sign
->contents
);
137 p7
->d
.sign
->contents
= p7_data
;
139 case NID_pkcs7_digest
:
140 if (p7
->d
.digest
->contents
!= NULL
)
141 PKCS7_free(p7
->d
.digest
->contents
);
142 p7
->d
.digest
->contents
= p7_data
;
145 case NID_pkcs7_enveloped
:
146 case NID_pkcs7_signedAndEnveloped
:
147 case NID_pkcs7_encrypted
:
149 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT
, PKCS7_R_UNSUPPORTED_CONTENT_TYPE
);
157 int PKCS7_set_type(PKCS7
*p7
, int type
)
162 * PKCS7_content_free(p7);
164 obj
= OBJ_nid2obj(type
); /* will not fail */
167 case NID_pkcs7_signed
:
169 if ((p7
->d
.sign
= PKCS7_SIGNED_new()) == NULL
)
171 if (!ASN1_INTEGER_set(p7
->d
.sign
->version
, 1)) {
172 PKCS7_SIGNED_free(p7
->d
.sign
);
179 if ((p7
->d
.data
= M_ASN1_OCTET_STRING_new()) == NULL
)
182 case NID_pkcs7_signedAndEnveloped
:
184 if ((p7
->d
.signed_and_enveloped
= PKCS7_SIGN_ENVELOPE_new())
187 ASN1_INTEGER_set(p7
->d
.signed_and_enveloped
->version
, 1);
188 if (!ASN1_INTEGER_set(p7
->d
.signed_and_enveloped
->version
, 1))
190 p7
->d
.signed_and_enveloped
->enc_data
->content_type
191 = OBJ_nid2obj(NID_pkcs7_data
);
193 case NID_pkcs7_enveloped
:
195 if ((p7
->d
.enveloped
= PKCS7_ENVELOPE_new())
198 if (!ASN1_INTEGER_set(p7
->d
.enveloped
->version
, 0))
200 p7
->d
.enveloped
->enc_data
->content_type
= OBJ_nid2obj(NID_pkcs7_data
);
202 case NID_pkcs7_encrypted
:
204 if ((p7
->d
.encrypted
= PKCS7_ENCRYPT_new())
207 if (!ASN1_INTEGER_set(p7
->d
.encrypted
->version
, 0))
209 p7
->d
.encrypted
->enc_data
->content_type
= OBJ_nid2obj(NID_pkcs7_data
);
212 case NID_pkcs7_digest
:
214 if ((p7
->d
.digest
= PKCS7_DIGEST_new())
217 if (!ASN1_INTEGER_set(p7
->d
.digest
->version
, 0))
221 PKCS7err(PKCS7_F_PKCS7_SET_TYPE
, PKCS7_R_UNSUPPORTED_CONTENT_TYPE
);
229 int PKCS7_set0_type_other(PKCS7
*p7
, int type
, ASN1_TYPE
*other
)
231 p7
->type
= OBJ_nid2obj(type
);
236 int PKCS7_add_signer(PKCS7
*p7
, PKCS7_SIGNER_INFO
*psi
)
240 STACK_OF(PKCS7_SIGNER_INFO
) *signer_sk
;
241 STACK_OF(X509_ALGOR
) *md_sk
;
243 i
= OBJ_obj2nid(p7
->type
);
245 case NID_pkcs7_signed
:
246 signer_sk
= p7
->d
.sign
->signer_info
;
247 md_sk
= p7
->d
.sign
->md_algs
;
249 case NID_pkcs7_signedAndEnveloped
:
250 signer_sk
= p7
->d
.signed_and_enveloped
->signer_info
;
251 md_sk
= p7
->d
.signed_and_enveloped
->md_algs
;
254 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER
, PKCS7_R_WRONG_CONTENT_TYPE
);
258 nid
= OBJ_obj2nid(psi
->digest_alg
->algorithm
);
260 /* If the digest is not currently listed, add it */
262 for (i
= 0; i
< sk_X509_ALGOR_num(md_sk
); i
++) {
263 alg
= sk_X509_ALGOR_value(md_sk
, i
);
264 if (OBJ_obj2nid(alg
->algorithm
) == nid
) {
269 if (!j
) { /* we need to add another algorithm */
270 if (!(alg
= X509_ALGOR_new())
271 || !(alg
->parameter
= ASN1_TYPE_new())) {
272 X509_ALGOR_free(alg
);
273 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER
, ERR_R_MALLOC_FAILURE
);
276 alg
->algorithm
= OBJ_nid2obj(nid
);
277 alg
->parameter
->type
= V_ASN1_NULL
;
278 if (!sk_X509_ALGOR_push(md_sk
, alg
)) {
279 X509_ALGOR_free(alg
);
284 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk
, psi
))
289 int PKCS7_add_certificate(PKCS7
*p7
, X509
*x509
)
294 i
= OBJ_obj2nid(p7
->type
);
296 case NID_pkcs7_signed
:
297 sk
= &(p7
->d
.sign
->cert
);
299 case NID_pkcs7_signedAndEnveloped
:
300 sk
= &(p7
->d
.signed_and_enveloped
->cert
);
303 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE
, PKCS7_R_WRONG_CONTENT_TYPE
);
308 *sk
= sk_X509_new_null();
310 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE
, ERR_R_MALLOC_FAILURE
);
313 CRYPTO_add(&x509
->references
, 1, CRYPTO_LOCK_X509
);
314 if (!sk_X509_push(*sk
, x509
)) {
321 int PKCS7_add_crl(PKCS7
*p7
, X509_CRL
*crl
)
324 STACK_OF(X509_CRL
) **sk
;
326 i
= OBJ_obj2nid(p7
->type
);
328 case NID_pkcs7_signed
:
329 sk
= &(p7
->d
.sign
->crl
);
331 case NID_pkcs7_signedAndEnveloped
:
332 sk
= &(p7
->d
.signed_and_enveloped
->crl
);
335 PKCS7err(PKCS7_F_PKCS7_ADD_CRL
, PKCS7_R_WRONG_CONTENT_TYPE
);
340 *sk
= sk_X509_CRL_new_null();
342 PKCS7err(PKCS7_F_PKCS7_ADD_CRL
, ERR_R_MALLOC_FAILURE
);
346 CRYPTO_add(&crl
->references
, 1, CRYPTO_LOCK_X509_CRL
);
347 if (!sk_X509_CRL_push(*sk
, crl
)) {
354 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO
*p7i
, X509
*x509
, EVP_PKEY
*pkey
,
359 /* We now need to add another PKCS7_SIGNER_INFO entry */
360 if (!ASN1_INTEGER_set(p7i
->version
, 1))
362 if (!X509_NAME_set(&p7i
->issuer_and_serial
->issuer
,
363 X509_get_issuer_name(x509
)))
367 * because ASN1_INTEGER_set is used to set a 'long' we will do things the
370 M_ASN1_INTEGER_free(p7i
->issuer_and_serial
->serial
);
371 if (!(p7i
->issuer_and_serial
->serial
=
372 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509
))))
375 /* lets keep the pkey around for a while */
376 CRYPTO_add(&pkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
379 /* Set the algorithms */
381 X509_ALGOR_set0(p7i
->digest_alg
, OBJ_nid2obj(EVP_MD_type(dgst
)),
384 if (pkey
->ameth
&& pkey
->ameth
->pkey_ctrl
) {
385 ret
= pkey
->ameth
->pkey_ctrl(pkey
, ASN1_PKEY_CTRL_PKCS7_SIGN
, 0, p7i
);
389 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET
,
390 PKCS7_R_SIGNING_CTRL_FAILURE
);
394 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET
,
395 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
);
400 PKCS7_SIGNER_INFO
*PKCS7_add_signature(PKCS7
*p7
, X509
*x509
, EVP_PKEY
*pkey
,
403 PKCS7_SIGNER_INFO
*si
= NULL
;
407 if (EVP_PKEY_get_default_digest_nid(pkey
, &def_nid
) <= 0)
409 dgst
= EVP_get_digestbynid(def_nid
);
411 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE
, PKCS7_R_NO_DEFAULT_DIGEST
);
416 if ((si
= PKCS7_SIGNER_INFO_new()) == NULL
)
418 if (!PKCS7_SIGNER_INFO_set(si
, x509
, pkey
, dgst
))
420 if (!PKCS7_add_signer(p7
, si
))
425 PKCS7_SIGNER_INFO_free(si
);
429 int PKCS7_set_digest(PKCS7
*p7
, const EVP_MD
*md
)
431 if (PKCS7_type_is_digest(p7
)) {
432 if (!(p7
->d
.digest
->md
->parameter
= ASN1_TYPE_new())) {
433 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST
, ERR_R_MALLOC_FAILURE
);
436 p7
->d
.digest
->md
->parameter
->type
= V_ASN1_NULL
;
437 p7
->d
.digest
->md
->algorithm
= OBJ_nid2obj(EVP_MD_nid(md
));
441 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST
, PKCS7_R_WRONG_CONTENT_TYPE
);
445 STACK_OF(PKCS7_SIGNER_INFO
) *PKCS7_get_signer_info(PKCS7
*p7
)
447 if (PKCS7_type_is_signed(p7
)) {
448 return (p7
->d
.sign
->signer_info
);
449 } else if (PKCS7_type_is_signedAndEnveloped(p7
)) {
450 return (p7
->d
.signed_and_enveloped
->signer_info
);
455 void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO
*si
, EVP_PKEY
**pk
,
456 X509_ALGOR
**pdig
, X509_ALGOR
**psig
)
461 *pdig
= si
->digest_alg
;
463 *psig
= si
->digest_enc_alg
;
466 void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO
*ri
, X509_ALGOR
**penc
)
469 *penc
= ri
->key_enc_algor
;
472 PKCS7_RECIP_INFO
*PKCS7_add_recipient(PKCS7
*p7
, X509
*x509
)
474 PKCS7_RECIP_INFO
*ri
;
476 if ((ri
= PKCS7_RECIP_INFO_new()) == NULL
)
478 if (!PKCS7_RECIP_INFO_set(ri
, x509
))
480 if (!PKCS7_add_recipient_info(p7
, ri
))
485 PKCS7_RECIP_INFO_free(ri
);
489 int PKCS7_add_recipient_info(PKCS7
*p7
, PKCS7_RECIP_INFO
*ri
)
492 STACK_OF(PKCS7_RECIP_INFO
) *sk
;
494 i
= OBJ_obj2nid(p7
->type
);
496 case NID_pkcs7_signedAndEnveloped
:
497 sk
= p7
->d
.signed_and_enveloped
->recipientinfo
;
499 case NID_pkcs7_enveloped
:
500 sk
= p7
->d
.enveloped
->recipientinfo
;
503 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO
,
504 PKCS7_R_WRONG_CONTENT_TYPE
);
508 if (!sk_PKCS7_RECIP_INFO_push(sk
, ri
))
513 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO
*p7i
, X509
*x509
)
516 EVP_PKEY
*pkey
= NULL
;
517 if (!ASN1_INTEGER_set(p7i
->version
, 0))
519 if (!X509_NAME_set(&p7i
->issuer_and_serial
->issuer
,
520 X509_get_issuer_name(x509
)))
523 M_ASN1_INTEGER_free(p7i
->issuer_and_serial
->serial
);
524 if (!(p7i
->issuer_and_serial
->serial
=
525 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509
))))
528 pkey
= X509_get_pubkey(x509
);
530 if (!pkey
|| !pkey
->ameth
|| !pkey
->ameth
->pkey_ctrl
) {
531 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET
,
532 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
);
536 ret
= pkey
->ameth
->pkey_ctrl(pkey
, ASN1_PKEY_CTRL_PKCS7_ENCRYPT
, 0, p7i
);
538 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET
,
539 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE
);
543 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET
,
544 PKCS7_R_ENCRYPTION_CTRL_FAILURE
);
550 CRYPTO_add(&x509
->references
, 1, CRYPTO_LOCK_X509
);
561 X509
*PKCS7_cert_from_signer_info(PKCS7
*p7
, PKCS7_SIGNER_INFO
*si
)
563 if (PKCS7_type_is_signed(p7
))
564 return (X509_find_by_issuer_and_serial(p7
->d
.sign
->cert
,
565 si
->issuer_and_serial
->issuer
,
567 issuer_and_serial
->serial
));
572 int PKCS7_set_cipher(PKCS7
*p7
, const EVP_CIPHER
*cipher
)
575 PKCS7_ENC_CONTENT
*ec
;
577 i
= OBJ_obj2nid(p7
->type
);
579 case NID_pkcs7_signedAndEnveloped
:
580 ec
= p7
->d
.signed_and_enveloped
->enc_data
;
582 case NID_pkcs7_enveloped
:
583 ec
= p7
->d
.enveloped
->enc_data
;
586 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER
, PKCS7_R_WRONG_CONTENT_TYPE
);
590 /* Check cipher OID exists and has data in it */
591 i
= EVP_CIPHER_type(cipher
);
592 if (i
== NID_undef
) {
593 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER
,
594 PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER
);
602 int PKCS7_stream(unsigned char ***boundary
, PKCS7
*p7
)
604 ASN1_OCTET_STRING
*os
= NULL
;
606 switch (OBJ_obj2nid(p7
->type
)) {
611 case NID_pkcs7_signedAndEnveloped
:
612 os
= p7
->d
.signed_and_enveloped
->enc_data
->enc_data
;
614 os
= M_ASN1_OCTET_STRING_new();
615 p7
->d
.signed_and_enveloped
->enc_data
->enc_data
= os
;
619 case NID_pkcs7_enveloped
:
620 os
= p7
->d
.enveloped
->enc_data
->enc_data
;
622 os
= M_ASN1_OCTET_STRING_new();
623 p7
->d
.enveloped
->enc_data
->enc_data
= os
;
627 case NID_pkcs7_signed
:
628 os
= p7
->d
.sign
->contents
->d
.data
;
639 os
->flags
|= ASN1_STRING_FLAG_NDEF
;
640 *boundary
= &os
->data
;