2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/objects.h>
13 #include <openssl/x509.h>
14 #include "internal/asn1_int.h"
15 #include "internal/evp_int.h"
17 long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
22 nid = OBJ_obj2nid(p7->type);
25 /* NOTE(emilia): does not support detached digested data. */
26 case PKCS7_OP_SET_DETACHED_SIGNATURE:
27 if (nid == NID_pkcs7_signed) {
28 ret = p7->detached = (int)larg;
29 if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
30 ASN1_OCTET_STRING *os;
31 os = p7->d.sign->contents->d.data;
32 ASN1_OCTET_STRING_free(os);
33 p7->d.sign->contents->d.data = NULL;
36 PKCS7err(PKCS7_F_PKCS7_CTRL,
37 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
41 case PKCS7_OP_GET_DETACHED_SIGNATURE:
42 if (nid == NID_pkcs7_signed) {
43 if (!p7->d.sign || !p7->d.sign->contents->d.ptr)
50 PKCS7err(PKCS7_F_PKCS7_CTRL,
51 PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
57 PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
63 int PKCS7_content_new(PKCS7 *p7, int type)
67 if ((ret = PKCS7_new()) == NULL)
69 if (!PKCS7_set_type(ret, type))
71 if (!PKCS7_set_content(p7, ret))
80 int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
84 i = OBJ_obj2nid(p7->type);
86 case NID_pkcs7_signed:
87 PKCS7_free(p7->d.sign->contents);
88 p7->d.sign->contents = p7_data;
90 case NID_pkcs7_digest:
91 PKCS7_free(p7->d.digest->contents);
92 p7->d.digest->contents = p7_data;
95 case NID_pkcs7_enveloped:
96 case NID_pkcs7_signedAndEnveloped:
97 case NID_pkcs7_encrypted:
99 PKCS7err(PKCS7_F_PKCS7_SET_CONTENT, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
107 int PKCS7_set_type(PKCS7 *p7, int type)
112 * PKCS7_content_free(p7);
114 obj = OBJ_nid2obj(type); /* will not fail */
117 case NID_pkcs7_signed:
119 if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
121 if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
122 PKCS7_SIGNED_free(p7->d.sign);
129 if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL)
132 case NID_pkcs7_signedAndEnveloped:
134 if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new())
137 ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
138 if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
140 p7->d.signed_and_enveloped->enc_data->content_type
141 = OBJ_nid2obj(NID_pkcs7_data);
143 case NID_pkcs7_enveloped:
145 if ((p7->d.enveloped = PKCS7_ENVELOPE_new())
148 if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
150 p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
152 case NID_pkcs7_encrypted:
154 if ((p7->d.encrypted = PKCS7_ENCRYPT_new())
157 if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
159 p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
162 case NID_pkcs7_digest:
164 if ((p7->d.digest = PKCS7_DIGEST_new())
167 if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
171 PKCS7err(PKCS7_F_PKCS7_SET_TYPE, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
179 int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
181 p7->type = OBJ_nid2obj(type);
186 int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
190 STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
191 STACK_OF(X509_ALGOR) *md_sk;
193 i = OBJ_obj2nid(p7->type);
195 case NID_pkcs7_signed:
196 signer_sk = p7->d.sign->signer_info;
197 md_sk = p7->d.sign->md_algs;
199 case NID_pkcs7_signedAndEnveloped:
200 signer_sk = p7->d.signed_and_enveloped->signer_info;
201 md_sk = p7->d.signed_and_enveloped->md_algs;
204 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
208 nid = OBJ_obj2nid(psi->digest_alg->algorithm);
210 /* If the digest is not currently listed, add it */
212 for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
213 alg = sk_X509_ALGOR_value(md_sk, i);
214 if (OBJ_obj2nid(alg->algorithm) == nid) {
219 if (!j) { /* we need to add another algorithm */
220 if ((alg = X509_ALGOR_new()) == NULL
221 || (alg->parameter = ASN1_TYPE_new()) == NULL) {
222 X509_ALGOR_free(alg);
223 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, ERR_R_MALLOC_FAILURE);
226 alg->algorithm = OBJ_nid2obj(nid);
227 alg->parameter->type = V_ASN1_NULL;
228 if (!sk_X509_ALGOR_push(md_sk, alg)) {
229 X509_ALGOR_free(alg);
234 if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
239 int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
244 i = OBJ_obj2nid(p7->type);
246 case NID_pkcs7_signed:
247 sk = &(p7->d.sign->cert);
249 case NID_pkcs7_signedAndEnveloped:
250 sk = &(p7->d.signed_and_enveloped->cert);
253 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, PKCS7_R_WRONG_CONTENT_TYPE);
258 *sk = sk_X509_new_null();
260 PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
264 if (!sk_X509_push(*sk, x509)) {
271 int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
274 STACK_OF(X509_CRL) **sk;
276 i = OBJ_obj2nid(p7->type);
278 case NID_pkcs7_signed:
279 sk = &(p7->d.sign->crl);
281 case NID_pkcs7_signedAndEnveloped:
282 sk = &(p7->d.signed_and_enveloped->crl);
285 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
290 *sk = sk_X509_CRL_new_null();
292 PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
296 X509_CRL_up_ref(crl);
297 if (!sk_X509_CRL_push(*sk, crl)) {
304 int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
309 /* We now need to add another PKCS7_SIGNER_INFO entry */
310 if (!ASN1_INTEGER_set(p7i->version, 1))
312 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
313 X509_get_issuer_name(x509)))
317 * because ASN1_INTEGER_set is used to set a 'long' we will do things the
320 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
321 if (!(p7i->issuer_and_serial->serial =
322 ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
325 /* lets keep the pkey around for a while */
326 EVP_PKEY_up_ref(pkey);
329 /* Set the algorithms */
331 X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
334 if (pkey->ameth && pkey->ameth->pkey_ctrl) {
335 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i);
339 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
340 PKCS7_R_SIGNING_CTRL_FAILURE);
344 PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
345 PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
350 PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
353 PKCS7_SIGNER_INFO *si = NULL;
357 if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
359 dgst = EVP_get_digestbynid(def_nid);
361 PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, PKCS7_R_NO_DEFAULT_DIGEST);
366 if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
368 if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
370 if (!PKCS7_add_signer(p7, si))
374 PKCS7_SIGNER_INFO_free(si);
378 int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
380 if (PKCS7_type_is_digest(p7)) {
381 if ((p7->d.digest->md->parameter = ASN1_TYPE_new()) == NULL) {
382 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, ERR_R_MALLOC_FAILURE);
385 p7->d.digest->md->parameter->type = V_ASN1_NULL;
386 p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
390 PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
394 STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
396 if (p7 == NULL || p7->d.ptr == NULL)
398 if (PKCS7_type_is_signed(p7)) {
399 return (p7->d.sign->signer_info);
400 } else if (PKCS7_type_is_signedAndEnveloped(p7)) {
401 return (p7->d.signed_and_enveloped->signer_info);
406 void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
407 X509_ALGOR **pdig, X509_ALGOR **psig)
412 *pdig = si->digest_alg;
414 *psig = si->digest_enc_alg;
417 void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
420 *penc = ri->key_enc_algor;
423 PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
425 PKCS7_RECIP_INFO *ri;
427 if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
429 if (!PKCS7_RECIP_INFO_set(ri, x509))
431 if (!PKCS7_add_recipient_info(p7, ri))
435 PKCS7_RECIP_INFO_free(ri);
439 int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
442 STACK_OF(PKCS7_RECIP_INFO) *sk;
444 i = OBJ_obj2nid(p7->type);
446 case NID_pkcs7_signedAndEnveloped:
447 sk = p7->d.signed_and_enveloped->recipientinfo;
449 case NID_pkcs7_enveloped:
450 sk = p7->d.enveloped->recipientinfo;
453 PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
454 PKCS7_R_WRONG_CONTENT_TYPE);
458 if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
463 int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
466 EVP_PKEY *pkey = NULL;
467 if (!ASN1_INTEGER_set(p7i->version, 0))
469 if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
470 X509_get_issuer_name(x509)))
473 ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
474 if (!(p7i->issuer_and_serial->serial =
475 ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
478 pkey = X509_get0_pubkey(x509);
480 if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
481 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
482 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
486 ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i);
488 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
489 PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
493 PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
494 PKCS7_R_ENCRYPTION_CTRL_FAILURE);
507 X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
509 if (PKCS7_type_is_signed(p7))
510 return (X509_find_by_issuer_and_serial(p7->d.sign->cert,
511 si->issuer_and_serial->issuer,
513 issuer_and_serial->serial));
518 int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
521 PKCS7_ENC_CONTENT *ec;
523 i = OBJ_obj2nid(p7->type);
525 case NID_pkcs7_signedAndEnveloped:
526 ec = p7->d.signed_and_enveloped->enc_data;
528 case NID_pkcs7_enveloped:
529 ec = p7->d.enveloped->enc_data;
532 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
536 /* Check cipher OID exists and has data in it */
537 i = EVP_CIPHER_type(cipher);
538 if (i == NID_undef) {
539 PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
540 PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
548 int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
550 ASN1_OCTET_STRING *os = NULL;
552 switch (OBJ_obj2nid(p7->type)) {
557 case NID_pkcs7_signedAndEnveloped:
558 os = p7->d.signed_and_enveloped->enc_data->enc_data;
560 os = ASN1_OCTET_STRING_new();
561 p7->d.signed_and_enveloped->enc_data->enc_data = os;
565 case NID_pkcs7_enveloped:
566 os = p7->d.enveloped->enc_data->enc_data;
568 os = ASN1_OCTET_STRING_new();
569 p7->d.enveloped->enc_data->enc_data = os;
573 case NID_pkcs7_signed:
574 os = p7->d.sign->contents->d.data;
585 os->flags |= ASN1_STRING_FLAG_NDEF;
586 *boundary = &os->data;