1 /* $OpenBSD: pk7_lib.c,v 1.17 2015/09/30 17:30:15 jsing Exp $ */
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/err.h>
62 #include <openssl/objects.h>
63 #include <openssl/x509.h>
65 #include "asn1_locl.h"
68 PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
73 nid = OBJ_obj2nid(p7->type);
76 case PKCS7_OP_SET_DETACHED_SIGNATURE:
77 if (nid == NID_pkcs7_signed) {
78 ret = p7->detached = (int)larg;
79 if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
80 ASN1_OCTET_STRING *os;
81 os = p7->d.sign->contents->d.data;
82 ASN1_OCTET_STRING_free(os);
83 p7->d.sign->contents->d.data = NULL;
86 PKCS7err(PKCS7_F_PKCS7_CTRL,
87 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
91 case PKCS7_OP_GET_DETACHED_SIGNATURE:
92 if (nid == NID_pkcs7_signed) {
93 if (!p7->d.sign || !p7->d.sign->contents->d.ptr)
100 PKCS7err(PKCS7_F_PKCS7_CTRL,
101 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
107 PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
114 PKCS7_content_new(PKCS7 *p7, int type)
118 if ((ret = PKCS7_new()) == NULL)
120 if (!PKCS7_set_type(ret, type))
122 if (!PKCS7_set_content(p7, ret))
133 PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
137 i = OBJ_obj2nid(p7->type);
139 case NID_pkcs7_signed:
140 if (p7->d.sign->contents != NULL)
141 PKCS7_free(p7->d.sign->contents);
142 p7->d.sign->contents = p7_data;
144 case NID_pkcs7_digest:
145 if (p7->d.digest->contents != NULL)
146 PKCS7_free(p7->d.digest->contents);
147 p7->d.digest->contents = p7_data;
150 case NID_pkcs7_enveloped:
151 case NID_pkcs7_signedAndEnveloped:
152 case NID_pkcs7_encrypted:
154 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,
155 PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
164 PKCS7_set_type(PKCS7 *p7, int type)
168 /*PKCS7_content_free(p7);*/
169 obj=OBJ_nid2obj(type); /* will not fail */
172 case NID_pkcs7_signed:
174 if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
176 if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
177 PKCS7_SIGNED_free(p7->d.sign);
184 if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
187 case NID_pkcs7_signedAndEnveloped:
189 if ((p7->d.signed_and_enveloped =
190 PKCS7_SIGN_ENVELOPE_new()) == NULL)
192 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
193 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
195 p7->d.signed_and_enveloped->enc_data->content_type =
196 OBJ_nid2obj(NID_pkcs7_data);
198 case NID_pkcs7_enveloped:
200 if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) == NULL)
202 if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
204 p7->d.enveloped->enc_data->content_type =
205 OBJ_nid2obj(NID_pkcs7_data);
207 case NID_pkcs7_encrypted:
209 if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) == NULL)
211 if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
213 p7->d.encrypted->enc_data->content_type =
214 OBJ_nid2obj(NID_pkcs7_data);
217 case NID_pkcs7_digest:
219 if ((p7->d.digest = PKCS7_DIGEST_new()) == NULL)
221 if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
225 PKCS7err(PKCS7_F_PKCS7_SET_TYPE,
226 PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
235 PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
237 p7->type = OBJ_nid2obj(type);
243 PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
247 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
248 STACK_OF(X509_ALGOR) *md_sk;
250 i = OBJ_obj2nid(p7->type);
252 case NID_pkcs7_signed:
253 signer_sk = p7->d.sign->signer_info;
254 md_sk = p7->d.sign->md_algs;
256 case NID_pkcs7_signedAndEnveloped:
257 signer_sk = p7->d.signed_and_enveloped->signer_info;
258 md_sk = p7->d.signed_and_enveloped->md_algs;
261 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
265 nid = OBJ_obj2nid(psi->digest_alg->algorithm);
267 /* If the digest is not currently listed, add it */
269 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
270 alg = sk_X509_ALGOR_value(md_sk, i);
271 if (OBJ_obj2nid(alg->algorithm) == nid) {
276 if (!j) /* we need to add another algorithm */
278 if (!(alg = X509_ALGOR_new()) ||
279 !(alg->parameter = ASN1_TYPE_new())) {
280 X509_ALGOR_free(alg);
281 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,
282 ERR_R_MALLOC_FAILURE);
285 alg->algorithm = OBJ_nid2obj(nid);
286 alg->parameter->type = V_ASN1_NULL;
287 if (!sk_X509_ALGOR_push(md_sk, alg)) {
288 X509_ALGOR_free(alg);
293 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
299 PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
304 i = OBJ_obj2nid(p7->type);
306 case NID_pkcs7_signed:
307 sk = &(p7->d.sign->cert);
309 case NID_pkcs7_signedAndEnveloped:
310 sk = &(p7->d.signed_and_enveloped->cert);
313 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,
314 PKCS7_R_WRONG_CONTENT_TYPE);
319 *sk = sk_X509_new_null();
321 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
324 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
325 if (!sk_X509_push(*sk, x509)) {
333 PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
336 STACK_OF(X509_CRL) **sk;
338 i = OBJ_obj2nid(p7->type);
340 case NID_pkcs7_signed:
341 sk = &(p7->d.sign->crl);
343 case NID_pkcs7_signedAndEnveloped:
344 sk = &(p7->d.signed_and_enveloped->crl);
347 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
352 *sk = sk_X509_CRL_new_null();
354 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
358 CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
359 if (!sk_X509_CRL_push(*sk, crl)) {
367 PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
372 /* We now need to add another PKCS7_SIGNER_INFO entry */
373 if (!ASN1_INTEGER_set(p7i->version, 1))
375 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
376 X509_get_issuer_name(x509)))
379 /* because ASN1_INTEGER_set is used to set a 'long' we will do
380 * things the ugly way. */
381 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
382 if (!(p7i->issuer_and_serial->serial =
383 ASN1_STRING_dup(X509_get_serialNumber(x509))))
386 /* lets keep the pkey around for a while */
387 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
390 /* Set the algorithms */
392 X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
395 if (pkey->ameth && pkey->ameth->pkey_ctrl) {
396 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN,
401 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
402 PKCS7_R_SIGNING_CTRL_FAILURE);
406 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
407 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
413 PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey, const EVP_MD *dgst)
415 PKCS7_SIGNER_INFO *si = NULL;
419 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
421 dgst = EVP_get_digestbynid(def_nid);
423 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE,
424 PKCS7_R_NO_DEFAULT_DIGEST);
429 if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
431 if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
433 if (!PKCS7_add_signer(p7, si))
438 PKCS7_SIGNER_INFO_free(si);
443 PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
445 if (PKCS7_type_is_digest(p7)) {
446 if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
447 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,
448 ERR_R_MALLOC_FAILURE);
451 p7->d.digest->md->parameter->type = V_ASN1_NULL;
452 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
456 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
460 STACK_OF(PKCS7_SIGNER_INFO) *
461 PKCS7_get_signer_info(PKCS7 *p7)
463 if (p7 == NULL || p7->d.ptr == NULL)
465 if (PKCS7_type_is_signed(p7)) {
466 return (p7->d.sign->signer_info);
467 } else if (PKCS7_type_is_signedAndEnveloped(p7)) {
468 return (p7->d.signed_and_enveloped->signer_info);
474 PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
475 X509_ALGOR **pdig, X509_ALGOR **psig)
480 *pdig = si->digest_alg;
482 *psig = si->digest_enc_alg;
486 PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
489 *penc = ri->key_enc_algor;
493 PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
495 PKCS7_RECIP_INFO *ri;
497 if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
499 if (!PKCS7_RECIP_INFO_set(ri, x509))
501 if (!PKCS7_add_recipient_info(p7, ri))
506 PKCS7_RECIP_INFO_free(ri);
511 PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
514 STACK_OF(PKCS7_RECIP_INFO) *sk;
516 i = OBJ_obj2nid(p7->type);
518 case NID_pkcs7_signedAndEnveloped:
519 sk = p7->d.signed_and_enveloped->recipientinfo;
521 case NID_pkcs7_enveloped:
522 sk = p7->d.enveloped->recipientinfo;
525 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
526 PKCS7_R_WRONG_CONTENT_TYPE);
530 if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
536 PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
539 EVP_PKEY *pkey = NULL;
540 if (!ASN1_INTEGER_set(p7i->version, 0))
542 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
543 X509_get_issuer_name(x509)))
546 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
547 if (!(p7i->issuer_and_serial->serial =
548 ASN1_STRING_dup(X509_get_serialNumber(x509))))
551 pkey = X509_get_pubkey(x509);
553 if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
554 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
555 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
559 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT,
562 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
563 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
567 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
568 PKCS7_R_ENCRYPTION_CTRL_FAILURE);
574 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
585 PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
587 if (PKCS7_type_is_signed(p7))
588 return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
589 si->issuer_and_serial->issuer,
590 si->issuer_and_serial->serial));
596 PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
599 PKCS7_ENC_CONTENT *ec;
601 i = OBJ_obj2nid(p7->type);
603 case NID_pkcs7_signedAndEnveloped:
604 ec = p7->d.signed_and_enveloped->enc_data;
606 case NID_pkcs7_enveloped:
607 ec = p7->d.enveloped->enc_data;
610 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
614 /* Check cipher OID exists and has data in it*/
615 i = EVP_CIPHER_type(cipher);
616 if (i == NID_undef) {
617 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
618 PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
627 PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
629 ASN1_OCTET_STRING *os = NULL;
631 switch (OBJ_obj2nid(p7->type)) {
636 case NID_pkcs7_signedAndEnveloped:
637 os = p7->d.signed_and_enveloped->enc_data->enc_data;
639 os = ASN1_OCTET_STRING_new();
640 p7->d.signed_and_enveloped->enc_data->enc_data = os;
644 case NID_pkcs7_enveloped:
645 os = p7->d.enveloped->enc_data->enc_data;
647 os = ASN1_OCTET_STRING_new();
648 p7->d.enveloped->enc_data->enc_data = os;
652 case NID_pkcs7_signed:
653 os = p7->d.sign->contents->d.data;
664 os->flags |= ASN1_STRING_FLAG_NDEF;
665 *boundary = &os->data;