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 /* NOTE(emilia): does not support detached digested data. */
74 case PKCS7_OP_SET_DETACHED_SIGNATURE:
75 if (nid == NID_pkcs7_signed) {
76 ret = p7->detached = (int)larg;
77 if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
78 ASN1_OCTET_STRING *os;
79 os = p7->d.sign->contents->d.data;
80 ASN1_OCTET_STRING_free(os);
81 p7->d.sign->contents->d.data = NULL;
84 PKCS7err(PKCS7_F_PKCS7_CTRL,
85 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
89 case PKCS7_OP_GET_DETACHED_SIGNATURE:
90 if (nid == NID_pkcs7_signed) {
91 if (!p7->d.sign || !p7->d.sign->contents->d.ptr)
98 PKCS7err(PKCS7_F_PKCS7_CTRL,
99 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
105 PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
111 int PKCS7_content_new(PKCS7 *p7, int type)
115 if ((ret = PKCS7_new()) == NULL)
117 if (!PKCS7_set_type(ret, type))
119 if (!PKCS7_set_content(p7, ret))
129 int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
133 i = OBJ_obj2nid(p7->type);
135 case NID_pkcs7_signed:
136 if (p7->d.sign->contents != NULL)
137 PKCS7_free(p7->d.sign->contents);
138 p7->d.sign->contents = p7_data;
140 case NID_pkcs7_digest:
141 if (p7->d.digest->contents != NULL)
142 PKCS7_free(p7->d.digest->contents);
143 p7->d.digest->contents = p7_data;
146 case NID_pkcs7_enveloped:
147 case NID_pkcs7_signedAndEnveloped:
148 case NID_pkcs7_encrypted:
150 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
158 int PKCS7_set_type(PKCS7 *p7, int type)
163 * PKCS7_content_free(p7);
165 obj = OBJ_nid2obj(type); /* will not fail */
168 case NID_pkcs7_signed:
170 if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
172 if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
173 PKCS7_SIGNED_free(p7->d.sign);
180 if ((p7->d.data = M_ASN1_OCTET_STRING_new()) == NULL)
183 case NID_pkcs7_signedAndEnveloped:
185 if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new())
188 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
189 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
191 p7->d.signed_and_enveloped->enc_data->content_type
192 = OBJ_nid2obj(NID_pkcs7_data);
194 case NID_pkcs7_enveloped:
196 if ((p7->d.enveloped = PKCS7_ENVELOPE_new())
199 if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
201 p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
203 case NID_pkcs7_encrypted:
205 if ((p7->d.encrypted = PKCS7_ENCRYPT_new())
208 if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
210 p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
213 case NID_pkcs7_digest:
215 if ((p7->d.digest = PKCS7_DIGEST_new())
218 if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
222 PKCS7err(PKCS7_F_PKCS7_SET_TYPE, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
230 int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
232 p7->type = OBJ_nid2obj(type);
237 int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
241 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
242 STACK_OF(X509_ALGOR) *md_sk;
244 i = OBJ_obj2nid(p7->type);
246 case NID_pkcs7_signed:
247 signer_sk = p7->d.sign->signer_info;
248 md_sk = p7->d.sign->md_algs;
250 case NID_pkcs7_signedAndEnveloped:
251 signer_sk = p7->d.signed_and_enveloped->signer_info;
252 md_sk = p7->d.signed_and_enveloped->md_algs;
255 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
259 nid = OBJ_obj2nid(psi->digest_alg->algorithm);
261 /* If the digest is not currently listed, add it */
263 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
264 alg = sk_X509_ALGOR_value(md_sk, i);
265 if (OBJ_obj2nid(alg->algorithm) == nid) {
270 if (!j) { /* we need to add another algorithm */
271 if (!(alg = X509_ALGOR_new())
272 || !(alg->parameter = ASN1_TYPE_new())) {
273 X509_ALGOR_free(alg);
274 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, ERR_R_MALLOC_FAILURE);
277 alg->algorithm = OBJ_nid2obj(nid);
278 alg->parameter->type = V_ASN1_NULL;
279 if (!sk_X509_ALGOR_push(md_sk, alg)) {
280 X509_ALGOR_free(alg);
285 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
290 int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
295 i = OBJ_obj2nid(p7->type);
297 case NID_pkcs7_signed:
298 sk = &(p7->d.sign->cert);
300 case NID_pkcs7_signedAndEnveloped:
301 sk = &(p7->d.signed_and_enveloped->cert);
304 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, PKCS7_R_WRONG_CONTENT_TYPE);
309 *sk = sk_X509_new_null();
311 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
314 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
315 if (!sk_X509_push(*sk, x509)) {
322 int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
325 STACK_OF(X509_CRL) **sk;
327 i = OBJ_obj2nid(p7->type);
329 case NID_pkcs7_signed:
330 sk = &(p7->d.sign->crl);
332 case NID_pkcs7_signedAndEnveloped:
333 sk = &(p7->d.signed_and_enveloped->crl);
336 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
341 *sk = sk_X509_CRL_new_null();
343 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
347 CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
348 if (!sk_X509_CRL_push(*sk, crl)) {
355 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
360 /* We now need to add another PKCS7_SIGNER_INFO entry */
361 if (!ASN1_INTEGER_set(p7i->version, 1))
363 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
364 X509_get_issuer_name(x509)))
368 * because ASN1_INTEGER_set is used to set a 'long' we will do things the
371 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
372 if (!(p7i->issuer_and_serial->serial =
373 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
376 /* lets keep the pkey around for a while */
377 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
380 /* Set the algorithms */
382 X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
385 if (pkey->ameth && pkey->ameth->pkey_ctrl) {
386 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i);
390 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
391 PKCS7_R_SIGNING_CTRL_FAILURE);
395 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
396 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
401 PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
404 PKCS7_SIGNER_INFO *si = NULL;
408 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
410 dgst = EVP_get_digestbynid(def_nid);
412 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, PKCS7_R_NO_DEFAULT_DIGEST);
417 if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
419 if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
421 if (!PKCS7_add_signer(p7, si))
426 PKCS7_SIGNER_INFO_free(si);
430 int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
432 if (PKCS7_type_is_digest(p7)) {
433 if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
434 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, ERR_R_MALLOC_FAILURE);
437 p7->d.digest->md->parameter->type = V_ASN1_NULL;
438 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
442 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
446 STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
448 if (p7 == NULL || p7->d.ptr == NULL)
450 if (PKCS7_type_is_signed(p7)) {
451 return (p7->d.sign->signer_info);
452 } else if (PKCS7_type_is_signedAndEnveloped(p7)) {
453 return (p7->d.signed_and_enveloped->signer_info);
458 void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
459 X509_ALGOR **pdig, X509_ALGOR **psig)
464 *pdig = si->digest_alg;
466 *psig = si->digest_enc_alg;
469 void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
472 *penc = ri->key_enc_algor;
475 PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
477 PKCS7_RECIP_INFO *ri;
479 if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
481 if (!PKCS7_RECIP_INFO_set(ri, x509))
483 if (!PKCS7_add_recipient_info(p7, ri))
488 PKCS7_RECIP_INFO_free(ri);
492 int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
495 STACK_OF(PKCS7_RECIP_INFO) *sk;
497 i = OBJ_obj2nid(p7->type);
499 case NID_pkcs7_signedAndEnveloped:
500 sk = p7->d.signed_and_enveloped->recipientinfo;
502 case NID_pkcs7_enveloped:
503 sk = p7->d.enveloped->recipientinfo;
506 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
507 PKCS7_R_WRONG_CONTENT_TYPE);
511 if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
516 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
519 EVP_PKEY *pkey = NULL;
520 if (!ASN1_INTEGER_set(p7i->version, 0))
522 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
523 X509_get_issuer_name(x509)))
526 M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
527 if (!(p7i->issuer_and_serial->serial =
528 M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
531 pkey = X509_get_pubkey(x509);
533 if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
534 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
535 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
539 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i);
541 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
542 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
546 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
547 PKCS7_R_ENCRYPTION_CTRL_FAILURE);
553 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
564 X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
566 if (PKCS7_type_is_signed(p7))
567 return (X509_find_by_issuer_and_serial(p7->d.sign->cert,
568 si->issuer_and_serial->issuer,
570 issuer_and_serial->serial));
575 int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
578 PKCS7_ENC_CONTENT *ec;
580 i = OBJ_obj2nid(p7->type);
582 case NID_pkcs7_signedAndEnveloped:
583 ec = p7->d.signed_and_enveloped->enc_data;
585 case NID_pkcs7_enveloped:
586 ec = p7->d.enveloped->enc_data;
589 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
593 /* Check cipher OID exists and has data in it */
594 i = EVP_CIPHER_type(cipher);
595 if (i == NID_undef) {
596 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
597 PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
605 int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
607 ASN1_OCTET_STRING *os = NULL;
609 switch (OBJ_obj2nid(p7->type)) {
614 case NID_pkcs7_signedAndEnveloped:
615 os = p7->d.signed_and_enveloped->enc_data->enc_data;
617 os = M_ASN1_OCTET_STRING_new();
618 p7->d.signed_and_enveloped->enc_data->enc_data = os;
622 case NID_pkcs7_enveloped:
623 os = p7->d.enveloped->enc_data->enc_data;
625 os = M_ASN1_OCTET_STRING_new();
626 p7->d.enveloped->enc_data->enc_data = os;
630 case NID_pkcs7_signed:
631 os = p7->d.sign->contents->d.data;
642 os->flags |= ASN1_STRING_FLAG_NDEF;
643 *boundary = &os->data;