1 /* crypto/cms/cms_env.c */
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
55 #include "internal/cryptlib.h"
56 #include <openssl/asn1t.h>
57 #include <openssl/pem.h>
58 #include <openssl/x509v3.h>
59 #include <openssl/err.h>
60 #include <openssl/cms.h>
61 #include <openssl/rand.h>
62 #include <openssl/aes.h>
64 #include "internal/asn1_int.h"
65 #include "internal/evp_int.h"
67 /* CMS EnvelopedData Utilities */
69 CMS_EnvelopedData *cms_get0_enveloped(CMS_ContentInfo *cms)
71 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_enveloped) {
72 CMSerr(CMS_F_CMS_GET0_ENVELOPED,
73 CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
76 return cms->d.envelopedData;
79 static CMS_EnvelopedData *cms_enveloped_data_init(CMS_ContentInfo *cms)
81 if (cms->d.other == NULL) {
82 cms->d.envelopedData = M_ASN1_new_of(CMS_EnvelopedData);
83 if (!cms->d.envelopedData) {
84 CMSerr(CMS_F_CMS_ENVELOPED_DATA_INIT, ERR_R_MALLOC_FAILURE);
87 cms->d.envelopedData->version = 0;
88 cms->d.envelopedData->encryptedContentInfo->contentType =
89 OBJ_nid2obj(NID_pkcs7_data);
90 ASN1_OBJECT_free(cms->contentType);
91 cms->contentType = OBJ_nid2obj(NID_pkcs7_enveloped);
92 return cms->d.envelopedData;
94 return cms_get0_enveloped(cms);
97 int cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
101 if (ri->type == CMS_RECIPINFO_TRANS)
102 pkey = ri->d.ktri->pkey;
103 else if (ri->type == CMS_RECIPINFO_AGREE) {
104 EVP_PKEY_CTX *pctx = ri->d.kari->pctx;
107 pkey = EVP_PKEY_CTX_get0_pkey(pctx);
112 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
114 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_ENVELOPE, cmd, ri);
116 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL,
117 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
121 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL, CMS_R_CTRL_FAILURE);
127 STACK_OF(CMS_RecipientInfo) *CMS_get0_RecipientInfos(CMS_ContentInfo *cms)
129 CMS_EnvelopedData *env;
130 env = cms_get0_enveloped(cms);
133 return env->recipientInfos;
136 int CMS_RecipientInfo_type(CMS_RecipientInfo *ri)
141 EVP_PKEY_CTX *CMS_RecipientInfo_get0_pkey_ctx(CMS_RecipientInfo *ri)
143 if (ri->type == CMS_RECIPINFO_TRANS)
144 return ri->d.ktri->pctx;
145 else if (ri->type == CMS_RECIPINFO_AGREE)
146 return ri->d.kari->pctx;
150 CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher)
152 CMS_ContentInfo *cms;
153 CMS_EnvelopedData *env;
154 cms = CMS_ContentInfo_new();
157 env = cms_enveloped_data_init(cms);
160 if (!cms_EncryptedContent_init(env->encryptedContentInfo,
165 CMS_ContentInfo_free(cms);
166 CMSerr(CMS_F_CMS_ENVELOPEDDATA_CREATE, ERR_R_MALLOC_FAILURE);
170 /* Key Transport Recipient Info (KTRI) routines */
172 /* Initialise a ktri based on passed certificate and key */
174 static int cms_RecipientInfo_ktri_init(CMS_RecipientInfo *ri, X509 *recip,
175 EVP_PKEY *pk, unsigned int flags)
177 CMS_KeyTransRecipientInfo *ktri;
180 ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo);
183 ri->type = CMS_RECIPINFO_TRANS;
187 if (flags & CMS_USE_KEYID) {
189 idtype = CMS_RECIPINFO_KEYIDENTIFIER;
192 idtype = CMS_RECIPINFO_ISSUER_SERIAL;
196 * Not a typo: RecipientIdentifier and SignerIdentifier are the same
200 if (!cms_set1_SignerIdentifier(ktri->rid, recip, idtype))
204 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
208 if (flags & CMS_KEY_PARAM) {
209 ktri->pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
210 if (ktri->pctx == NULL)
212 if (EVP_PKEY_encrypt_init(ktri->pctx) <= 0)
214 } else if (!cms_env_asn1_ctrl(ri, 0))
220 * Add a recipient certificate using appropriate type of RecipientInfo
223 CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms,
224 X509 *recip, unsigned int flags)
226 CMS_RecipientInfo *ri = NULL;
227 CMS_EnvelopedData *env;
229 env = cms_get0_enveloped(cms);
233 /* Initialize recipient info */
234 ri = M_ASN1_new_of(CMS_RecipientInfo);
238 pk = X509_get0_pubkey(recip);
240 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY);
244 switch (cms_pkey_get_ri_type(pk)) {
246 case CMS_RECIPINFO_TRANS:
247 if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags))
251 case CMS_RECIPINFO_AGREE:
252 if (!cms_RecipientInfo_kari_init(ri, recip, pk, flags))
257 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT,
258 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
263 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
269 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE);
271 M_ASN1_free_of(ri, CMS_RecipientInfo);
276 int CMS_RecipientInfo_ktri_get0_algs(CMS_RecipientInfo *ri,
277 EVP_PKEY **pk, X509 **recip,
280 CMS_KeyTransRecipientInfo *ktri;
281 if (ri->type != CMS_RECIPINFO_TRANS) {
282 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_ALGS,
283 CMS_R_NOT_KEY_TRANSPORT);
292 *recip = ktri->recip;
294 *palg = ktri->keyEncryptionAlgorithm;
298 int CMS_RecipientInfo_ktri_get0_signer_id(CMS_RecipientInfo *ri,
299 ASN1_OCTET_STRING **keyid,
303 CMS_KeyTransRecipientInfo *ktri;
304 if (ri->type != CMS_RECIPINFO_TRANS) {
305 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_SIGNER_ID,
306 CMS_R_NOT_KEY_TRANSPORT);
311 return cms_SignerIdentifier_get0_signer_id(ktri->rid, keyid, issuer, sno);
314 int CMS_RecipientInfo_ktri_cert_cmp(CMS_RecipientInfo *ri, X509 *cert)
316 if (ri->type != CMS_RECIPINFO_TRANS) {
317 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_CERT_CMP,
318 CMS_R_NOT_KEY_TRANSPORT);
321 return cms_SignerIdentifier_cert_cmp(ri->d.ktri->rid, cert);
324 int CMS_RecipientInfo_set0_pkey(CMS_RecipientInfo *ri, EVP_PKEY *pkey)
326 if (ri->type != CMS_RECIPINFO_TRANS) {
327 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_PKEY, CMS_R_NOT_KEY_TRANSPORT);
330 ri->d.ktri->pkey = pkey;
334 /* Encrypt content key in key transport recipient info */
336 static int cms_RecipientInfo_ktri_encrypt(CMS_ContentInfo *cms,
337 CMS_RecipientInfo *ri)
339 CMS_KeyTransRecipientInfo *ktri;
340 CMS_EncryptedContentInfo *ec;
342 unsigned char *ek = NULL;
347 if (ri->type != CMS_RECIPINFO_TRANS) {
348 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_NOT_KEY_TRANSPORT);
352 ec = cms->d.envelopedData->encryptedContentInfo;
357 if (!cms_env_asn1_ctrl(ri, 0))
360 pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
364 if (EVP_PKEY_encrypt_init(pctx) <= 0)
368 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
369 EVP_PKEY_CTRL_CMS_ENCRYPT, 0, ri) <= 0) {
370 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_CTRL_ERROR);
374 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, ec->key, ec->keylen) <= 0)
377 ek = OPENSSL_malloc(eklen);
380 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
384 if (EVP_PKEY_encrypt(pctx, ek, &eklen, ec->key, ec->keylen) <= 0)
387 ASN1_STRING_set0(ktri->encryptedKey, ek, eklen);
393 EVP_PKEY_CTX_free(pctx);
400 /* Decrypt content key from KTRI */
402 static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
403 CMS_RecipientInfo *ri)
405 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
406 EVP_PKEY *pkey = ktri->pkey;
407 unsigned char *ek = NULL;
410 CMS_EncryptedContentInfo *ec;
411 ec = cms->d.envelopedData->encryptedContentInfo;
413 if (ktri->pkey == NULL) {
414 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_NO_PRIVATE_KEY);
418 ktri->pctx = EVP_PKEY_CTX_new(pkey, NULL);
419 if (ktri->pctx == NULL)
422 if (EVP_PKEY_decrypt_init(ktri->pctx) <= 0)
425 if (!cms_env_asn1_ctrl(ri, 1))
428 if (EVP_PKEY_CTX_ctrl(ktri->pctx, -1, EVP_PKEY_OP_DECRYPT,
429 EVP_PKEY_CTRL_CMS_DECRYPT, 0, ri) <= 0) {
430 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CTRL_ERROR);
434 if (EVP_PKEY_decrypt(ktri->pctx, NULL, &eklen,
435 ktri->encryptedKey->data,
436 ktri->encryptedKey->length) <= 0)
439 ek = OPENSSL_malloc(eklen);
442 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, ERR_R_MALLOC_FAILURE);
446 if (EVP_PKEY_decrypt(ktri->pctx, ek, &eklen,
447 ktri->encryptedKey->data,
448 ktri->encryptedKey->length) <= 0) {
449 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
455 OPENSSL_clear_free(ec->key, ec->keylen);
460 EVP_PKEY_CTX_free(ktri->pctx);
468 /* Key Encrypted Key (KEK) RecipientInfo routines */
470 int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
471 const unsigned char *id, size_t idlen)
473 ASN1_OCTET_STRING tmp_os;
474 CMS_KEKRecipientInfo *kekri;
475 if (ri->type != CMS_RECIPINFO_KEK) {
476 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ID_CMP, CMS_R_NOT_KEK);
480 tmp_os.type = V_ASN1_OCTET_STRING;
482 tmp_os.data = (unsigned char *)id;
483 tmp_os.length = (int)idlen;
484 return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
487 /* For now hard code AES key wrap info */
489 static size_t aes_wrap_keylen(int nid)
492 case NID_id_aes128_wrap:
495 case NID_id_aes192_wrap:
498 case NID_id_aes256_wrap:
506 CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid,
507 unsigned char *key, size_t keylen,
508 unsigned char *id, size_t idlen,
509 ASN1_GENERALIZEDTIME *date,
510 ASN1_OBJECT *otherTypeId,
511 ASN1_TYPE *otherType)
513 CMS_RecipientInfo *ri = NULL;
514 CMS_EnvelopedData *env;
515 CMS_KEKRecipientInfo *kekri;
516 env = cms_get0_enveloped(cms);
520 if (nid == NID_undef) {
523 nid = NID_id_aes128_wrap;
527 nid = NID_id_aes192_wrap;
531 nid = NID_id_aes256_wrap;
535 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
541 size_t exp_keylen = aes_wrap_keylen(nid);
544 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY,
545 CMS_R_UNSUPPORTED_KEK_ALGORITHM);
549 if (keylen != exp_keylen) {
550 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
556 /* Initialize recipient info */
557 ri = M_ASN1_new_of(CMS_RecipientInfo);
561 ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo);
564 ri->type = CMS_RECIPINFO_KEK;
569 kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute);
570 if (kekri->kekid->other == NULL)
574 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
577 /* After this point no calls can fail */
582 kekri->keylen = keylen;
584 ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen);
586 kekri->kekid->date = date;
588 if (kekri->kekid->other) {
589 kekri->kekid->other->keyAttrId = otherTypeId;
590 kekri->kekid->other->keyAttr = otherType;
593 X509_ALGOR_set0(kekri->keyEncryptionAlgorithm,
594 OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL);
599 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, ERR_R_MALLOC_FAILURE);
601 M_ASN1_free_of(ri, CMS_RecipientInfo);
606 int CMS_RecipientInfo_kekri_get0_id(CMS_RecipientInfo *ri,
608 ASN1_OCTET_STRING **pid,
609 ASN1_GENERALIZEDTIME **pdate,
610 ASN1_OBJECT **potherid,
611 ASN1_TYPE **pothertype)
613 CMS_KEKIdentifier *rkid;
614 if (ri->type != CMS_RECIPINFO_KEK) {
615 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_GET0_ID, CMS_R_NOT_KEK);
618 rkid = ri->d.kekri->kekid;
620 *palg = ri->d.kekri->keyEncryptionAlgorithm;
622 *pid = rkid->keyIdentifier;
627 *potherid = rkid->other->keyAttrId;
633 *pothertype = rkid->other->keyAttr;
640 int CMS_RecipientInfo_set0_key(CMS_RecipientInfo *ri,
641 unsigned char *key, size_t keylen)
643 CMS_KEKRecipientInfo *kekri;
644 if (ri->type != CMS_RECIPINFO_KEK) {
645 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_KEY, CMS_R_NOT_KEK);
651 kekri->keylen = keylen;
655 /* Encrypt content key in KEK recipient info */
657 static int cms_RecipientInfo_kekri_encrypt(CMS_ContentInfo *cms,
658 CMS_RecipientInfo *ri)
660 CMS_EncryptedContentInfo *ec;
661 CMS_KEKRecipientInfo *kekri;
663 unsigned char *wkey = NULL;
667 ec = cms->d.envelopedData->encryptedContentInfo;
672 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_NO_KEY);
676 if (AES_set_encrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
677 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT,
678 CMS_R_ERROR_SETTING_KEY);
682 wkey = OPENSSL_malloc(ec->keylen + 8);
685 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
689 wkeylen = AES_wrap_key(&actx, NULL, wkey, ec->key, ec->keylen);
692 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_WRAP_ERROR);
696 ASN1_STRING_set0(kekri->encryptedKey, wkey, wkeylen);
704 OPENSSL_cleanse(&actx, sizeof(actx));
710 /* Decrypt content key in KEK recipient info */
712 static int cms_RecipientInfo_kekri_decrypt(CMS_ContentInfo *cms,
713 CMS_RecipientInfo *ri)
715 CMS_EncryptedContentInfo *ec;
716 CMS_KEKRecipientInfo *kekri;
718 unsigned char *ukey = NULL;
722 ec = cms->d.envelopedData->encryptedContentInfo;
727 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_NO_KEY);
731 wrap_nid = OBJ_obj2nid(kekri->keyEncryptionAlgorithm->algorithm);
732 if (aes_wrap_keylen(wrap_nid) != kekri->keylen) {
733 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
734 CMS_R_INVALID_KEY_LENGTH);
738 /* If encrypted key length is invalid don't bother */
740 if (kekri->encryptedKey->length < 16) {
741 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
742 CMS_R_INVALID_ENCRYPTED_KEY_LENGTH);
746 if (AES_set_decrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
747 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
748 CMS_R_ERROR_SETTING_KEY);
752 ukey = OPENSSL_malloc(kekri->encryptedKey->length - 8);
755 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, ERR_R_MALLOC_FAILURE);
759 ukeylen = AES_unwrap_key(&actx, NULL, ukey,
760 kekri->encryptedKey->data,
761 kekri->encryptedKey->length);
764 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_UNWRAP_ERROR);
769 ec->keylen = ukeylen;
777 OPENSSL_cleanse(&actx, sizeof(actx));
783 int CMS_RecipientInfo_decrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
786 case CMS_RECIPINFO_TRANS:
787 return cms_RecipientInfo_ktri_decrypt(cms, ri);
789 case CMS_RECIPINFO_KEK:
790 return cms_RecipientInfo_kekri_decrypt(cms, ri);
792 case CMS_RECIPINFO_PASS:
793 return cms_RecipientInfo_pwri_crypt(cms, ri, 0);
796 CMSerr(CMS_F_CMS_RECIPIENTINFO_DECRYPT,
797 CMS_R_UNSUPPORTED_RECPIENTINFO_TYPE);
802 int CMS_RecipientInfo_encrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
805 case CMS_RECIPINFO_TRANS:
806 return cms_RecipientInfo_ktri_encrypt(cms, ri);
808 case CMS_RECIPINFO_AGREE:
809 return cms_RecipientInfo_kari_encrypt(cms, ri);
811 case CMS_RECIPINFO_KEK:
812 return cms_RecipientInfo_kekri_encrypt(cms, ri);
814 case CMS_RECIPINFO_PASS:
815 return cms_RecipientInfo_pwri_crypt(cms, ri, 1);
818 CMSerr(CMS_F_CMS_RECIPIENTINFO_ENCRYPT,
819 CMS_R_UNSUPPORTED_RECIPIENT_TYPE);
824 /* Check structures and fixup version numbers (if necessary) */
826 static void cms_env_set_originfo_version(CMS_EnvelopedData *env)
828 CMS_OriginatorInfo *org = env->originatorInfo;
832 for (i = 0; i < sk_CMS_CertificateChoices_num(org->certificates); i++) {
833 CMS_CertificateChoices *cch;
834 cch = sk_CMS_CertificateChoices_value(org->certificates, i);
835 if (cch->type == CMS_CERTCHOICE_OTHER) {
838 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
839 if (env->version < 3)
844 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(org->crls); i++) {
845 CMS_RevocationInfoChoice *rch;
846 rch = sk_CMS_RevocationInfoChoice_value(org->crls, i);
847 if (rch->type == CMS_REVCHOICE_OTHER) {
854 static void cms_env_set_version(CMS_EnvelopedData *env)
857 CMS_RecipientInfo *ri;
860 * Can't set version higher than 4 so if 4 or more already nothing to do.
862 if (env->version >= 4)
865 cms_env_set_originfo_version(env);
867 if (env->version >= 3)
870 for (i = 0; i < sk_CMS_RecipientInfo_num(env->recipientInfos); i++) {
871 ri = sk_CMS_RecipientInfo_value(env->recipientInfos, i);
872 if (ri->type == CMS_RECIPINFO_PASS || ri->type == CMS_RECIPINFO_OTHER) {
875 } else if (ri->type != CMS_RECIPINFO_TRANS
876 || ri->d.ktri->version != 0) {
880 if (env->version == 2)
882 if (env->originatorInfo || env->unprotectedAttrs)
887 BIO *cms_EnvelopedData_init_bio(CMS_ContentInfo *cms)
889 CMS_EncryptedContentInfo *ec;
890 STACK_OF(CMS_RecipientInfo) *rinfos;
891 CMS_RecipientInfo *ri;
895 /* Get BIO first to set up key */
897 ec = cms->d.envelopedData->encryptedContentInfo;
898 ret = cms_EncryptedContent_init_bio(ec);
900 /* If error or no cipher end of processing */
902 if (!ret || !ec->cipher)
905 /* Now encrypt content key according to each RecipientInfo type */
907 rinfos = cms->d.envelopedData->recipientInfos;
909 for (i = 0; i < sk_CMS_RecipientInfo_num(rinfos); i++) {
910 ri = sk_CMS_RecipientInfo_value(rinfos, i);
911 if (CMS_RecipientInfo_encrypt(cms, ri) <= 0) {
912 CMSerr(CMS_F_CMS_ENVELOPEDDATA_INIT_BIO,
913 CMS_R_ERROR_SETTING_RECIPIENTINFO);
917 cms_env_set_version(cms->d.envelopedData);
923 OPENSSL_clear_free(ec->key, ec->keylen);
934 * Get RecipientInfo type (if any) supported by a key (public or private). To
935 * retain compatibility with previous behaviour if the ctrl value isn't
936 * supported we assume key transport.
938 int cms_pkey_get_ri_type(EVP_PKEY *pk)
940 if (pk->ameth && pk->ameth->pkey_ctrl) {
942 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_RI_TYPE, 0, &r);
946 return CMS_RECIPINFO_TRANS;