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;