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"
66 /* CMS EnvelopedData Utilities */
68 DECLARE_STACK_OF(CMS_RecipientInfo)
70 CMS_EnvelopedData *cms_get0_enveloped(CMS_ContentInfo *cms)
72 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_enveloped) {
73 CMSerr(CMS_F_CMS_GET0_ENVELOPED,
74 CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
77 return cms->d.envelopedData;
80 static CMS_EnvelopedData *cms_enveloped_data_init(CMS_ContentInfo *cms)
82 if (cms->d.other == NULL) {
83 cms->d.envelopedData = M_ASN1_new_of(CMS_EnvelopedData);
84 if (!cms->d.envelopedData) {
85 CMSerr(CMS_F_CMS_ENVELOPED_DATA_INIT, ERR_R_MALLOC_FAILURE);
88 cms->d.envelopedData->version = 0;
89 cms->d.envelopedData->encryptedContentInfo->contentType =
90 OBJ_nid2obj(NID_pkcs7_data);
91 ASN1_OBJECT_free(cms->contentType);
92 cms->contentType = OBJ_nid2obj(NID_pkcs7_enveloped);
93 return cms->d.envelopedData;
95 return cms_get0_enveloped(cms);
98 int cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
102 if (ri->type == CMS_RECIPINFO_TRANS)
103 pkey = ri->d.ktri->pkey;
104 else if (ri->type == CMS_RECIPINFO_AGREE) {
105 EVP_PKEY_CTX *pctx = ri->d.kari->pctx;
108 pkey = EVP_PKEY_CTX_get0_pkey(pctx);
113 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
115 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_ENVELOPE, cmd, ri);
117 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL,
118 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
122 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL, CMS_R_CTRL_FAILURE);
128 STACK_OF(CMS_RecipientInfo) *CMS_get0_RecipientInfos(CMS_ContentInfo *cms)
130 CMS_EnvelopedData *env;
131 env = cms_get0_enveloped(cms);
134 return env->recipientInfos;
137 int CMS_RecipientInfo_type(CMS_RecipientInfo *ri)
142 EVP_PKEY_CTX *CMS_RecipientInfo_get0_pkey_ctx(CMS_RecipientInfo *ri)
144 if (ri->type == CMS_RECIPINFO_TRANS)
145 return ri->d.ktri->pctx;
146 else if (ri->type == CMS_RECIPINFO_AGREE)
147 return ri->d.kari->pctx;
151 CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher)
153 CMS_ContentInfo *cms;
154 CMS_EnvelopedData *env;
155 cms = CMS_ContentInfo_new();
158 env = cms_enveloped_data_init(cms);
161 if (!cms_EncryptedContent_init(env->encryptedContentInfo,
166 CMS_ContentInfo_free(cms);
167 CMSerr(CMS_F_CMS_ENVELOPEDDATA_CREATE, ERR_R_MALLOC_FAILURE);
171 /* Key Transport Recipient Info (KTRI) routines */
173 /* Initialise a ktri based on passed certificate and key */
175 static int cms_RecipientInfo_ktri_init(CMS_RecipientInfo *ri, X509 *recip,
176 EVP_PKEY *pk, unsigned int flags)
178 CMS_KeyTransRecipientInfo *ktri;
181 ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo);
184 ri->type = CMS_RECIPINFO_TRANS;
188 if (flags & CMS_USE_KEYID) {
190 idtype = CMS_RECIPINFO_KEYIDENTIFIER;
193 idtype = CMS_RECIPINFO_ISSUER_SERIAL;
197 * Not a typo: RecipientIdentifier and SignerIdentifier are the same
201 if (!cms_set1_SignerIdentifier(ktri->rid, recip, idtype))
205 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
209 if (flags & CMS_KEY_PARAM) {
210 ktri->pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
213 if (EVP_PKEY_encrypt_init(ktri->pctx) <= 0)
215 } else if (!cms_env_asn1_ctrl(ri, 0))
221 * Add a recipient certificate using appropriate type of RecipientInfo
224 CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms,
225 X509 *recip, unsigned int flags)
227 CMS_RecipientInfo *ri = NULL;
228 CMS_EnvelopedData *env;
230 env = cms_get0_enveloped(cms);
234 /* Initialize recipient info */
235 ri = M_ASN1_new_of(CMS_RecipientInfo);
239 pk = X509_get_pubkey(recip);
241 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY);
245 switch (cms_pkey_get_ri_type(pk)) {
247 case CMS_RECIPINFO_TRANS:
248 if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags))
252 case CMS_RECIPINFO_AGREE:
253 if (!cms_RecipientInfo_kari_init(ri, recip, pk, flags))
258 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT,
259 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
264 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
272 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE);
274 M_ASN1_free_of(ri, CMS_RecipientInfo);
280 int CMS_RecipientInfo_ktri_get0_algs(CMS_RecipientInfo *ri,
281 EVP_PKEY **pk, X509 **recip,
284 CMS_KeyTransRecipientInfo *ktri;
285 if (ri->type != CMS_RECIPINFO_TRANS) {
286 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_ALGS,
287 CMS_R_NOT_KEY_TRANSPORT);
296 *recip = ktri->recip;
298 *palg = ktri->keyEncryptionAlgorithm;
302 int CMS_RecipientInfo_ktri_get0_signer_id(CMS_RecipientInfo *ri,
303 ASN1_OCTET_STRING **keyid,
307 CMS_KeyTransRecipientInfo *ktri;
308 if (ri->type != CMS_RECIPINFO_TRANS) {
309 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_SIGNER_ID,
310 CMS_R_NOT_KEY_TRANSPORT);
315 return cms_SignerIdentifier_get0_signer_id(ktri->rid, keyid, issuer, sno);
318 int CMS_RecipientInfo_ktri_cert_cmp(CMS_RecipientInfo *ri, X509 *cert)
320 if (ri->type != CMS_RECIPINFO_TRANS) {
321 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_CERT_CMP,
322 CMS_R_NOT_KEY_TRANSPORT);
325 return cms_SignerIdentifier_cert_cmp(ri->d.ktri->rid, cert);
328 int CMS_RecipientInfo_set0_pkey(CMS_RecipientInfo *ri, EVP_PKEY *pkey)
330 if (ri->type != CMS_RECIPINFO_TRANS) {
331 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_PKEY, CMS_R_NOT_KEY_TRANSPORT);
334 ri->d.ktri->pkey = pkey;
338 /* Encrypt content key in key transport recipient info */
340 static int cms_RecipientInfo_ktri_encrypt(CMS_ContentInfo *cms,
341 CMS_RecipientInfo *ri)
343 CMS_KeyTransRecipientInfo *ktri;
344 CMS_EncryptedContentInfo *ec;
346 unsigned char *ek = NULL;
351 if (ri->type != CMS_RECIPINFO_TRANS) {
352 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_NOT_KEY_TRANSPORT);
356 ec = cms->d.envelopedData->encryptedContentInfo;
361 if (!cms_env_asn1_ctrl(ri, 0))
364 pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
368 if (EVP_PKEY_encrypt_init(pctx) <= 0)
372 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
373 EVP_PKEY_CTRL_CMS_ENCRYPT, 0, ri) <= 0) {
374 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_CTRL_ERROR);
378 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, ec->key, ec->keylen) <= 0)
381 ek = OPENSSL_malloc(eklen);
384 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
388 if (EVP_PKEY_encrypt(pctx, ek, &eklen, ec->key, ec->keylen) <= 0)
391 ASN1_STRING_set0(ktri->encryptedKey, ek, eklen);
397 EVP_PKEY_CTX_free(pctx);
404 /* Decrypt content key from KTRI */
406 static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
407 CMS_RecipientInfo *ri)
409 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
410 EVP_PKEY *pkey = ktri->pkey;
411 unsigned char *ek = NULL;
414 CMS_EncryptedContentInfo *ec;
415 ec = cms->d.envelopedData->encryptedContentInfo;
417 if (ktri->pkey == NULL) {
418 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_NO_PRIVATE_KEY);
422 ktri->pctx = EVP_PKEY_CTX_new(pkey, NULL);
426 if (EVP_PKEY_decrypt_init(ktri->pctx) <= 0)
429 if (!cms_env_asn1_ctrl(ri, 1))
432 if (EVP_PKEY_CTX_ctrl(ktri->pctx, -1, EVP_PKEY_OP_DECRYPT,
433 EVP_PKEY_CTRL_CMS_DECRYPT, 0, ri) <= 0) {
434 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CTRL_ERROR);
438 if (EVP_PKEY_decrypt(ktri->pctx, NULL, &eklen,
439 ktri->encryptedKey->data,
440 ktri->encryptedKey->length) <= 0)
443 ek = OPENSSL_malloc(eklen);
446 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, ERR_R_MALLOC_FAILURE);
450 if (EVP_PKEY_decrypt(ktri->pctx, ek, &eklen,
451 ktri->encryptedKey->data,
452 ktri->encryptedKey->length) <= 0) {
453 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
459 OPENSSL_clear_free(ec->key, ec->keylen);
464 EVP_PKEY_CTX_free(ktri->pctx);
472 /* Key Encrypted Key (KEK) RecipientInfo routines */
474 int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
475 const unsigned char *id, size_t idlen)
477 ASN1_OCTET_STRING tmp_os;
478 CMS_KEKRecipientInfo *kekri;
479 if (ri->type != CMS_RECIPINFO_KEK) {
480 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ID_CMP, CMS_R_NOT_KEK);
484 tmp_os.type = V_ASN1_OCTET_STRING;
486 tmp_os.data = (unsigned char *)id;
487 tmp_os.length = (int)idlen;
488 return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
491 /* For now hard code AES key wrap info */
493 static size_t aes_wrap_keylen(int nid)
496 case NID_id_aes128_wrap:
499 case NID_id_aes192_wrap:
502 case NID_id_aes256_wrap:
510 CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid,
511 unsigned char *key, size_t keylen,
512 unsigned char *id, size_t idlen,
513 ASN1_GENERALIZEDTIME *date,
514 ASN1_OBJECT *otherTypeId,
515 ASN1_TYPE *otherType)
517 CMS_RecipientInfo *ri = NULL;
518 CMS_EnvelopedData *env;
519 CMS_KEKRecipientInfo *kekri;
520 env = cms_get0_enveloped(cms);
524 if (nid == NID_undef) {
527 nid = NID_id_aes128_wrap;
531 nid = NID_id_aes192_wrap;
535 nid = NID_id_aes256_wrap;
539 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
545 size_t exp_keylen = aes_wrap_keylen(nid);
548 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY,
549 CMS_R_UNSUPPORTED_KEK_ALGORITHM);
553 if (keylen != exp_keylen) {
554 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
560 /* Initialize recipient info */
561 ri = M_ASN1_new_of(CMS_RecipientInfo);
565 ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo);
568 ri->type = CMS_RECIPINFO_KEK;
573 kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute);
574 if (kekri->kekid->other == NULL)
578 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
581 /* After this point no calls can fail */
586 kekri->keylen = keylen;
588 ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen);
590 kekri->kekid->date = date;
592 if (kekri->kekid->other) {
593 kekri->kekid->other->keyAttrId = otherTypeId;
594 kekri->kekid->other->keyAttr = otherType;
597 X509_ALGOR_set0(kekri->keyEncryptionAlgorithm,
598 OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL);
603 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, ERR_R_MALLOC_FAILURE);
605 M_ASN1_free_of(ri, CMS_RecipientInfo);
610 int CMS_RecipientInfo_kekri_get0_id(CMS_RecipientInfo *ri,
612 ASN1_OCTET_STRING **pid,
613 ASN1_GENERALIZEDTIME **pdate,
614 ASN1_OBJECT **potherid,
615 ASN1_TYPE **pothertype)
617 CMS_KEKIdentifier *rkid;
618 if (ri->type != CMS_RECIPINFO_KEK) {
619 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_GET0_ID, CMS_R_NOT_KEK);
622 rkid = ri->d.kekri->kekid;
624 *palg = ri->d.kekri->keyEncryptionAlgorithm;
626 *pid = rkid->keyIdentifier;
631 *potherid = rkid->other->keyAttrId;
637 *pothertype = rkid->other->keyAttr;
644 int CMS_RecipientInfo_set0_key(CMS_RecipientInfo *ri,
645 unsigned char *key, size_t keylen)
647 CMS_KEKRecipientInfo *kekri;
648 if (ri->type != CMS_RECIPINFO_KEK) {
649 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_KEY, CMS_R_NOT_KEK);
655 kekri->keylen = keylen;
659 /* Encrypt content key in KEK recipient info */
661 static int cms_RecipientInfo_kekri_encrypt(CMS_ContentInfo *cms,
662 CMS_RecipientInfo *ri)
664 CMS_EncryptedContentInfo *ec;
665 CMS_KEKRecipientInfo *kekri;
667 unsigned char *wkey = NULL;
671 ec = cms->d.envelopedData->encryptedContentInfo;
676 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_NO_KEY);
680 if (AES_set_encrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
681 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT,
682 CMS_R_ERROR_SETTING_KEY);
686 wkey = OPENSSL_malloc(ec->keylen + 8);
689 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
693 wkeylen = AES_wrap_key(&actx, NULL, wkey, ec->key, ec->keylen);
696 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_WRAP_ERROR);
700 ASN1_STRING_set0(kekri->encryptedKey, wkey, wkeylen);
708 OPENSSL_cleanse(&actx, sizeof(actx));
714 /* Decrypt content key in KEK recipient info */
716 static int cms_RecipientInfo_kekri_decrypt(CMS_ContentInfo *cms,
717 CMS_RecipientInfo *ri)
719 CMS_EncryptedContentInfo *ec;
720 CMS_KEKRecipientInfo *kekri;
722 unsigned char *ukey = NULL;
726 ec = cms->d.envelopedData->encryptedContentInfo;
731 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_NO_KEY);
735 wrap_nid = OBJ_obj2nid(kekri->keyEncryptionAlgorithm->algorithm);
736 if (aes_wrap_keylen(wrap_nid) != kekri->keylen) {
737 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
738 CMS_R_INVALID_KEY_LENGTH);
742 /* If encrypted key length is invalid don't bother */
744 if (kekri->encryptedKey->length < 16) {
745 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
746 CMS_R_INVALID_ENCRYPTED_KEY_LENGTH);
750 if (AES_set_decrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
751 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
752 CMS_R_ERROR_SETTING_KEY);
756 ukey = OPENSSL_malloc(kekri->encryptedKey->length - 8);
759 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, ERR_R_MALLOC_FAILURE);
763 ukeylen = AES_unwrap_key(&actx, NULL, ukey,
764 kekri->encryptedKey->data,
765 kekri->encryptedKey->length);
768 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_UNWRAP_ERROR);
773 ec->keylen = ukeylen;
781 OPENSSL_cleanse(&actx, sizeof(actx));
787 int CMS_RecipientInfo_decrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
790 case CMS_RECIPINFO_TRANS:
791 return cms_RecipientInfo_ktri_decrypt(cms, ri);
793 case CMS_RECIPINFO_KEK:
794 return cms_RecipientInfo_kekri_decrypt(cms, ri);
796 case CMS_RECIPINFO_PASS:
797 return cms_RecipientInfo_pwri_crypt(cms, ri, 0);
800 CMSerr(CMS_F_CMS_RECIPIENTINFO_DECRYPT,
801 CMS_R_UNSUPPORTED_RECPIENTINFO_TYPE);
806 int CMS_RecipientInfo_encrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
809 case CMS_RECIPINFO_TRANS:
810 return cms_RecipientInfo_ktri_encrypt(cms, ri);
812 case CMS_RECIPINFO_AGREE:
813 return cms_RecipientInfo_kari_encrypt(cms, ri);
815 case CMS_RECIPINFO_KEK:
816 return cms_RecipientInfo_kekri_encrypt(cms, ri);
818 case CMS_RECIPINFO_PASS:
819 return cms_RecipientInfo_pwri_crypt(cms, ri, 1);
822 CMSerr(CMS_F_CMS_RECIPIENTINFO_ENCRYPT,
823 CMS_R_UNSUPPORTED_RECIPIENT_TYPE);
828 /* Check structures and fixup version numbers (if necessary) */
830 static void cms_env_set_originfo_version(CMS_EnvelopedData *env)
832 CMS_OriginatorInfo *org = env->originatorInfo;
836 for (i = 0; i < sk_CMS_CertificateChoices_num(org->certificates); i++) {
837 CMS_CertificateChoices *cch;
838 cch = sk_CMS_CertificateChoices_value(org->certificates, i);
839 if (cch->type == CMS_CERTCHOICE_OTHER) {
842 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
843 if (env->version < 3)
848 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(org->crls); i++) {
849 CMS_RevocationInfoChoice *rch;
850 rch = sk_CMS_RevocationInfoChoice_value(org->crls, i);
851 if (rch->type == CMS_REVCHOICE_OTHER) {
858 static void cms_env_set_version(CMS_EnvelopedData *env)
861 CMS_RecipientInfo *ri;
864 * Can't set version higher than 4 so if 4 or more already nothing to do.
866 if (env->version >= 4)
869 cms_env_set_originfo_version(env);
871 if (env->version >= 3)
874 for (i = 0; i < sk_CMS_RecipientInfo_num(env->recipientInfos); i++) {
875 ri = sk_CMS_RecipientInfo_value(env->recipientInfos, i);
876 if (ri->type == CMS_RECIPINFO_PASS || ri->type == CMS_RECIPINFO_OTHER) {
879 } else if (ri->type != CMS_RECIPINFO_TRANS
880 || ri->d.ktri->version != 0) {
884 if (env->version == 2)
886 if (env->originatorInfo || env->unprotectedAttrs)
891 BIO *cms_EnvelopedData_init_bio(CMS_ContentInfo *cms)
893 CMS_EncryptedContentInfo *ec;
894 STACK_OF(CMS_RecipientInfo) *rinfos;
895 CMS_RecipientInfo *ri;
899 /* Get BIO first to set up key */
901 ec = cms->d.envelopedData->encryptedContentInfo;
902 ret = cms_EncryptedContent_init_bio(ec);
904 /* If error or no cipher end of processing */
906 if (!ret || !ec->cipher)
909 /* Now encrypt content key according to each RecipientInfo type */
911 rinfos = cms->d.envelopedData->recipientInfos;
913 for (i = 0; i < sk_CMS_RecipientInfo_num(rinfos); i++) {
914 ri = sk_CMS_RecipientInfo_value(rinfos, i);
915 if (CMS_RecipientInfo_encrypt(cms, ri) <= 0) {
916 CMSerr(CMS_F_CMS_ENVELOPEDDATA_INIT_BIO,
917 CMS_R_ERROR_SETTING_RECIPIENTINFO);
921 cms_env_set_version(cms->d.envelopedData);
927 OPENSSL_clear_free(ec->key, ec->keylen);
938 * Get RecipientInfo type (if any) supported by a key (public or private). To
939 * retain compatibility with previous behaviour if the ctrl value isn't
940 * supported we assume key transport.
942 int cms_pkey_get_ri_type(EVP_PKEY *pk)
944 if (pk->ameth && pk->ameth->pkey_ctrl) {
946 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_RI_TYPE, 0, &r);
950 return CMS_RECIPINFO_TRANS;