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.]
60 #include "internal/cryptlib.h"
61 #include <openssl/objects.h>
62 #include <openssl/x509.h>
63 #include "internal/asn1_int.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))
128 int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
132 i = OBJ_obj2nid(p7->type);
134 case NID_pkcs7_signed:
135 PKCS7_free(p7->d.sign->contents);
136 p7->d.sign->contents = p7_data;
138 case NID_pkcs7_digest:
139 PKCS7_free(p7->d.digest->contents);
140 p7->d.digest->contents = p7_data;
143 case NID_pkcs7_enveloped:
144 case NID_pkcs7_signedAndEnveloped:
145 case NID_pkcs7_encrypted:
147 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
155 int PKCS7_set_type(PKCS7 *p7, int type)
160 * PKCS7_content_free(p7);
162 obj = OBJ_nid2obj(type); /* will not fail */
165 case NID_pkcs7_signed:
167 if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
169 if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
170 PKCS7_SIGNED_free(p7->d.sign);
177 if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
180 case NID_pkcs7_signedAndEnveloped:
182 if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new())
185 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
186 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
188 p7->d.signed_and_enveloped->enc_data->content_type
189 = OBJ_nid2obj(NID_pkcs7_data);
191 case NID_pkcs7_enveloped:
193 if ((p7->d.enveloped = PKCS7_ENVELOPE_new())
196 if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
198 p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
200 case NID_pkcs7_encrypted:
202 if ((p7->d.encrypted = PKCS7_ENCRYPT_new())
205 if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
207 p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
210 case NID_pkcs7_digest:
212 if ((p7->d.digest = PKCS7_DIGEST_new())
215 if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
219 PKCS7err(PKCS7_F_PKCS7_SET_TYPE, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
227 int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
229 p7->type = OBJ_nid2obj(type);
234 int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
238 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
239 STACK_OF(X509_ALGOR) *md_sk;
241 i = OBJ_obj2nid(p7->type);
243 case NID_pkcs7_signed:
244 signer_sk = p7->d.sign->signer_info;
245 md_sk = p7->d.sign->md_algs;
247 case NID_pkcs7_signedAndEnveloped:
248 signer_sk = p7->d.signed_and_enveloped->signer_info;
249 md_sk = p7->d.signed_and_enveloped->md_algs;
252 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
256 nid = OBJ_obj2nid(psi->digest_alg->algorithm);
258 /* If the digest is not currently listed, add it */
260 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
261 alg = sk_X509_ALGOR_value(md_sk, i);
262 if (OBJ_obj2nid(alg->algorithm) == nid) {
267 if (!j) { /* we need to add another algorithm */
268 if ((alg = X509_ALGOR_new()) == NULL
269 || (alg->parameter = ASN1_TYPE_new()) == NULL) {
270 X509_ALGOR_free(alg);
271 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, ERR_R_MALLOC_FAILURE);
274 alg->algorithm = OBJ_nid2obj(nid);
275 alg->parameter->type = V_ASN1_NULL;
276 if (!sk_X509_ALGOR_push(md_sk, alg)) {
277 X509_ALGOR_free(alg);
282 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
287 int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
292 i = OBJ_obj2nid(p7->type);
294 case NID_pkcs7_signed:
295 sk = &(p7->d.sign->cert);
297 case NID_pkcs7_signedAndEnveloped:
298 sk = &(p7->d.signed_and_enveloped->cert);
301 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, PKCS7_R_WRONG_CONTENT_TYPE);
306 *sk = sk_X509_new_null();
308 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
311 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
312 if (!sk_X509_push(*sk, x509)) {
319 int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
322 STACK_OF(X509_CRL) **sk;
324 i = OBJ_obj2nid(p7->type);
326 case NID_pkcs7_signed:
327 sk = &(p7->d.sign->crl);
329 case NID_pkcs7_signedAndEnveloped:
330 sk = &(p7->d.signed_and_enveloped->crl);
333 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
338 *sk = sk_X509_CRL_new_null();
340 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
344 CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
345 if (!sk_X509_CRL_push(*sk, crl)) {
352 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
357 /* We now need to add another PKCS7_SIGNER_INFO entry */
358 if (!ASN1_INTEGER_set(p7i->version, 1))
360 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
361 X509_get_issuer_name(x509)))
365 * because ASN1_INTEGER_set is used to set a 'long' we will do things the
368 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
369 if (!(p7i->issuer_and_serial->serial =
370 ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
373 /* lets keep the pkey around for a while */
374 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
377 /* Set the algorithms */
379 X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
382 if (pkey->ameth && pkey->ameth->pkey_ctrl) {
383 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i);
387 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
388 PKCS7_R_SIGNING_CTRL_FAILURE);
392 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
393 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
398 PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
401 PKCS7_SIGNER_INFO *si = NULL;
405 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
407 dgst = EVP_get_digestbynid(def_nid);
409 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, PKCS7_R_NO_DEFAULT_DIGEST);
414 if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
416 if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
418 if (!PKCS7_add_signer(p7, si))
422 PKCS7_SIGNER_INFO_free(si);
426 int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
428 if (PKCS7_type_is_digest(p7)) {
429 if ((p7->d.digest->md->parameter = ASN1_TYPE_new()) == NULL) {
430 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, ERR_R_MALLOC_FAILURE);
433 p7->d.digest->md->parameter->type = V_ASN1_NULL;
434 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
438 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
442 STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
444 if (p7 == NULL || p7->d.ptr == NULL)
446 if (PKCS7_type_is_signed(p7)) {
447 return (p7->d.sign->signer_info);
448 } else if (PKCS7_type_is_signedAndEnveloped(p7)) {
449 return (p7->d.signed_and_enveloped->signer_info);
454 void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
455 X509_ALGOR **pdig, X509_ALGOR **psig)
460 *pdig = si->digest_alg;
462 *psig = si->digest_enc_alg;
465 void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
468 *penc = ri->key_enc_algor;
471 PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
473 PKCS7_RECIP_INFO *ri;
475 if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
477 if (!PKCS7_RECIP_INFO_set(ri, x509))
479 if (!PKCS7_add_recipient_info(p7, ri))
483 PKCS7_RECIP_INFO_free(ri);
487 int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
490 STACK_OF(PKCS7_RECIP_INFO) *sk;
492 i = OBJ_obj2nid(p7->type);
494 case NID_pkcs7_signedAndEnveloped:
495 sk = p7->d.signed_and_enveloped->recipientinfo;
497 case NID_pkcs7_enveloped:
498 sk = p7->d.enveloped->recipientinfo;
501 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
502 PKCS7_R_WRONG_CONTENT_TYPE);
506 if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
511 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
514 EVP_PKEY *pkey = NULL;
515 if (!ASN1_INTEGER_set(p7i->version, 0))
517 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
518 X509_get_issuer_name(x509)))
521 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
522 if (!(p7i->issuer_and_serial->serial =
523 ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
526 pkey = X509_get_pubkey(x509);
528 if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
529 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
530 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
534 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i);
536 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
537 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
541 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
542 PKCS7_R_ENCRYPTION_CTRL_FAILURE);
548 CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
558 X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
560 if (PKCS7_type_is_signed(p7))
561 return (X509_find_by_issuer_and_serial(p7->d.sign->cert,
562 si->issuer_and_serial->issuer,
564 issuer_and_serial->serial));
569 int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
572 PKCS7_ENC_CONTENT *ec;
574 i = OBJ_obj2nid(p7->type);
576 case NID_pkcs7_signedAndEnveloped:
577 ec = p7->d.signed_and_enveloped->enc_data;
579 case NID_pkcs7_enveloped:
580 ec = p7->d.enveloped->enc_data;
583 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
587 /* Check cipher OID exists and has data in it */
588 i = EVP_CIPHER_type(cipher);
589 if (i == NID_undef) {
590 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
591 PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
599 int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
601 ASN1_OCTET_STRING *os = NULL;
603 switch (OBJ_obj2nid(p7->type)) {
608 case NID_pkcs7_signedAndEnveloped:
609 os = p7->d.signed_and_enveloped->enc_data->enc_data;
611 os = ASN1_OCTET_STRING_new();
612 p7->d.signed_and_enveloped->enc_data->enc_data = os;
616 case NID_pkcs7_enveloped:
617 os = p7->d.enveloped->enc_data->enc_data;
619 os = ASN1_OCTET_STRING_new();
620 p7->d.enveloped->enc_data->enc_data = os;
624 case NID_pkcs7_signed:
625 os = p7->d.sign->contents->d.data;
636 os->flags |= ASN1_STRING_FLAG_NDEF;
637 *boundary = &os->data;