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_ASN1_ITEM(CMS_EnvelopedData)
69 DECLARE_ASN1_ITEM(CMS_KeyTransRecipientInfo)
70 DECLARE_ASN1_ITEM(CMS_KEKRecipientInfo)
71 DECLARE_ASN1_ITEM(CMS_OtherKeyAttribute)
73 DECLARE_STACK_OF(CMS_RecipientInfo)
75 CMS_EnvelopedData *cms_get0_enveloped(CMS_ContentInfo *cms)
77 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_enveloped) {
78 CMSerr(CMS_F_CMS_GET0_ENVELOPED,
79 CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
82 return cms->d.envelopedData;
85 static CMS_EnvelopedData *cms_enveloped_data_init(CMS_ContentInfo *cms)
87 if (cms->d.other == NULL) {
88 cms->d.envelopedData = M_ASN1_new_of(CMS_EnvelopedData);
89 if (!cms->d.envelopedData) {
90 CMSerr(CMS_F_CMS_ENVELOPED_DATA_INIT, ERR_R_MALLOC_FAILURE);
93 cms->d.envelopedData->version = 0;
94 cms->d.envelopedData->encryptedContentInfo->contentType =
95 OBJ_nid2obj(NID_pkcs7_data);
96 ASN1_OBJECT_free(cms->contentType);
97 cms->contentType = OBJ_nid2obj(NID_pkcs7_enveloped);
98 return cms->d.envelopedData;
100 return cms_get0_enveloped(cms);
103 int cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
107 if (ri->type == CMS_RECIPINFO_TRANS)
108 pkey = ri->d.ktri->pkey;
109 else if (ri->type == CMS_RECIPINFO_AGREE) {
110 EVP_PKEY_CTX *pctx = ri->d.kari->pctx;
113 pkey = EVP_PKEY_CTX_get0_pkey(pctx);
118 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
120 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_ENVELOPE, cmd, ri);
122 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL,
123 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
127 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL, CMS_R_CTRL_FAILURE);
133 STACK_OF(CMS_RecipientInfo) *CMS_get0_RecipientInfos(CMS_ContentInfo *cms)
135 CMS_EnvelopedData *env;
136 env = cms_get0_enveloped(cms);
139 return env->recipientInfos;
142 int CMS_RecipientInfo_type(CMS_RecipientInfo *ri)
147 EVP_PKEY_CTX *CMS_RecipientInfo_get0_pkey_ctx(CMS_RecipientInfo *ri)
149 if (ri->type == CMS_RECIPINFO_TRANS)
150 return ri->d.ktri->pctx;
151 else if (ri->type == CMS_RECIPINFO_AGREE)
152 return ri->d.kari->pctx;
156 CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher)
158 CMS_ContentInfo *cms;
159 CMS_EnvelopedData *env;
160 cms = CMS_ContentInfo_new();
163 env = cms_enveloped_data_init(cms);
166 if (!cms_EncryptedContent_init(env->encryptedContentInfo,
171 CMS_ContentInfo_free(cms);
172 CMSerr(CMS_F_CMS_ENVELOPEDDATA_CREATE, ERR_R_MALLOC_FAILURE);
176 /* Key Transport Recipient Info (KTRI) routines */
178 /* Initialise a ktri based on passed certificate and key */
180 static int cms_RecipientInfo_ktri_init(CMS_RecipientInfo *ri, X509 *recip,
181 EVP_PKEY *pk, unsigned int flags)
183 CMS_KeyTransRecipientInfo *ktri;
186 ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo);
189 ri->type = CMS_RECIPINFO_TRANS;
193 if (flags & CMS_USE_KEYID) {
195 idtype = CMS_RECIPINFO_KEYIDENTIFIER;
198 idtype = CMS_RECIPINFO_ISSUER_SERIAL;
202 * Not a typo: RecipientIdentifier and SignerIdentifier are the same
206 if (!cms_set1_SignerIdentifier(ktri->rid, recip, idtype))
209 CRYPTO_add(&recip->references, 1, CRYPTO_LOCK_X509);
210 CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
214 if (flags & CMS_KEY_PARAM) {
215 ktri->pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
218 if (EVP_PKEY_encrypt_init(ktri->pctx) <= 0)
220 } else if (!cms_env_asn1_ctrl(ri, 0))
226 * Add a recipient certificate using appropriate type of RecipientInfo
229 CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms,
230 X509 *recip, unsigned int flags)
232 CMS_RecipientInfo *ri = NULL;
233 CMS_EnvelopedData *env;
235 env = cms_get0_enveloped(cms);
239 /* Initialize recipient info */
240 ri = M_ASN1_new_of(CMS_RecipientInfo);
244 pk = X509_get_pubkey(recip);
246 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY);
250 switch (cms_pkey_get_ri_type(pk)) {
252 case CMS_RECIPINFO_TRANS:
253 if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags))
257 case CMS_RECIPINFO_AGREE:
258 if (!cms_RecipientInfo_kari_init(ri, recip, pk, flags))
263 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT,
264 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
269 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
277 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE);
279 M_ASN1_free_of(ri, CMS_RecipientInfo);
285 int CMS_RecipientInfo_ktri_get0_algs(CMS_RecipientInfo *ri,
286 EVP_PKEY **pk, X509 **recip,
289 CMS_KeyTransRecipientInfo *ktri;
290 if (ri->type != CMS_RECIPINFO_TRANS) {
291 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_ALGS,
292 CMS_R_NOT_KEY_TRANSPORT);
301 *recip = ktri->recip;
303 *palg = ktri->keyEncryptionAlgorithm;
307 int CMS_RecipientInfo_ktri_get0_signer_id(CMS_RecipientInfo *ri,
308 ASN1_OCTET_STRING **keyid,
312 CMS_KeyTransRecipientInfo *ktri;
313 if (ri->type != CMS_RECIPINFO_TRANS) {
314 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_SIGNER_ID,
315 CMS_R_NOT_KEY_TRANSPORT);
320 return cms_SignerIdentifier_get0_signer_id(ktri->rid, keyid, issuer, sno);
323 int CMS_RecipientInfo_ktri_cert_cmp(CMS_RecipientInfo *ri, X509 *cert)
325 if (ri->type != CMS_RECIPINFO_TRANS) {
326 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_CERT_CMP,
327 CMS_R_NOT_KEY_TRANSPORT);
330 return cms_SignerIdentifier_cert_cmp(ri->d.ktri->rid, cert);
333 int CMS_RecipientInfo_set0_pkey(CMS_RecipientInfo *ri, EVP_PKEY *pkey)
335 if (ri->type != CMS_RECIPINFO_TRANS) {
336 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_PKEY, CMS_R_NOT_KEY_TRANSPORT);
339 ri->d.ktri->pkey = pkey;
343 /* Encrypt content key in key transport recipient info */
345 static int cms_RecipientInfo_ktri_encrypt(CMS_ContentInfo *cms,
346 CMS_RecipientInfo *ri)
348 CMS_KeyTransRecipientInfo *ktri;
349 CMS_EncryptedContentInfo *ec;
351 unsigned char *ek = NULL;
356 if (ri->type != CMS_RECIPINFO_TRANS) {
357 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_NOT_KEY_TRANSPORT);
361 ec = cms->d.envelopedData->encryptedContentInfo;
366 if (!cms_env_asn1_ctrl(ri, 0))
369 pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
373 if (EVP_PKEY_encrypt_init(pctx) <= 0)
377 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
378 EVP_PKEY_CTRL_CMS_ENCRYPT, 0, ri) <= 0) {
379 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_CTRL_ERROR);
383 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, ec->key, ec->keylen) <= 0)
386 ek = OPENSSL_malloc(eklen);
389 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
393 if (EVP_PKEY_encrypt(pctx, ek, &eklen, ec->key, ec->keylen) <= 0)
396 ASN1_STRING_set0(ktri->encryptedKey, ek, eklen);
402 EVP_PKEY_CTX_free(pctx);
409 /* Decrypt content key from KTRI */
411 static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
412 CMS_RecipientInfo *ri)
414 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
415 EVP_PKEY *pkey = ktri->pkey;
416 unsigned char *ek = NULL;
419 CMS_EncryptedContentInfo *ec;
420 ec = cms->d.envelopedData->encryptedContentInfo;
422 if (ktri->pkey == NULL) {
423 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_NO_PRIVATE_KEY);
427 ktri->pctx = EVP_PKEY_CTX_new(pkey, NULL);
431 if (EVP_PKEY_decrypt_init(ktri->pctx) <= 0)
434 if (!cms_env_asn1_ctrl(ri, 1))
437 if (EVP_PKEY_CTX_ctrl(ktri->pctx, -1, EVP_PKEY_OP_DECRYPT,
438 EVP_PKEY_CTRL_CMS_DECRYPT, 0, ri) <= 0) {
439 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CTRL_ERROR);
443 if (EVP_PKEY_decrypt(ktri->pctx, NULL, &eklen,
444 ktri->encryptedKey->data,
445 ktri->encryptedKey->length) <= 0)
448 ek = OPENSSL_malloc(eklen);
451 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, ERR_R_MALLOC_FAILURE);
455 if (EVP_PKEY_decrypt(ktri->pctx, ek, &eklen,
456 ktri->encryptedKey->data,
457 ktri->encryptedKey->length) <= 0) {
458 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
464 OPENSSL_clear_free(ec->key, ec->keylen);
469 EVP_PKEY_CTX_free(ktri->pctx);
477 /* Key Encrypted Key (KEK) RecipientInfo routines */
479 int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
480 const unsigned char *id, size_t idlen)
482 ASN1_OCTET_STRING tmp_os;
483 CMS_KEKRecipientInfo *kekri;
484 if (ri->type != CMS_RECIPINFO_KEK) {
485 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ID_CMP, CMS_R_NOT_KEK);
489 tmp_os.type = V_ASN1_OCTET_STRING;
491 tmp_os.data = (unsigned char *)id;
492 tmp_os.length = (int)idlen;
493 return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
496 /* For now hard code AES key wrap info */
498 static size_t aes_wrap_keylen(int nid)
501 case NID_id_aes128_wrap:
504 case NID_id_aes192_wrap:
507 case NID_id_aes256_wrap:
515 CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid,
516 unsigned char *key, size_t keylen,
517 unsigned char *id, size_t idlen,
518 ASN1_GENERALIZEDTIME *date,
519 ASN1_OBJECT *otherTypeId,
520 ASN1_TYPE *otherType)
522 CMS_RecipientInfo *ri = NULL;
523 CMS_EnvelopedData *env;
524 CMS_KEKRecipientInfo *kekri;
525 env = cms_get0_enveloped(cms);
529 if (nid == NID_undef) {
532 nid = NID_id_aes128_wrap;
536 nid = NID_id_aes192_wrap;
540 nid = NID_id_aes256_wrap;
544 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
550 size_t exp_keylen = aes_wrap_keylen(nid);
553 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY,
554 CMS_R_UNSUPPORTED_KEK_ALGORITHM);
558 if (keylen != exp_keylen) {
559 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
565 /* Initialize recipient info */
566 ri = M_ASN1_new_of(CMS_RecipientInfo);
570 ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo);
573 ri->type = CMS_RECIPINFO_KEK;
578 kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute);
579 if (kekri->kekid->other == NULL)
583 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
586 /* After this point no calls can fail */
591 kekri->keylen = keylen;
593 ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen);
595 kekri->kekid->date = date;
597 if (kekri->kekid->other) {
598 kekri->kekid->other->keyAttrId = otherTypeId;
599 kekri->kekid->other->keyAttr = otherType;
602 X509_ALGOR_set0(kekri->keyEncryptionAlgorithm,
603 OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL);
608 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, ERR_R_MALLOC_FAILURE);
610 M_ASN1_free_of(ri, CMS_RecipientInfo);
615 int CMS_RecipientInfo_kekri_get0_id(CMS_RecipientInfo *ri,
617 ASN1_OCTET_STRING **pid,
618 ASN1_GENERALIZEDTIME **pdate,
619 ASN1_OBJECT **potherid,
620 ASN1_TYPE **pothertype)
622 CMS_KEKIdentifier *rkid;
623 if (ri->type != CMS_RECIPINFO_KEK) {
624 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_GET0_ID, CMS_R_NOT_KEK);
627 rkid = ri->d.kekri->kekid;
629 *palg = ri->d.kekri->keyEncryptionAlgorithm;
631 *pid = rkid->keyIdentifier;
636 *potherid = rkid->other->keyAttrId;
642 *pothertype = rkid->other->keyAttr;
649 int CMS_RecipientInfo_set0_key(CMS_RecipientInfo *ri,
650 unsigned char *key, size_t keylen)
652 CMS_KEKRecipientInfo *kekri;
653 if (ri->type != CMS_RECIPINFO_KEK) {
654 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_KEY, CMS_R_NOT_KEK);
660 kekri->keylen = keylen;
664 /* Encrypt content key in KEK recipient info */
666 static int cms_RecipientInfo_kekri_encrypt(CMS_ContentInfo *cms,
667 CMS_RecipientInfo *ri)
669 CMS_EncryptedContentInfo *ec;
670 CMS_KEKRecipientInfo *kekri;
672 unsigned char *wkey = NULL;
676 ec = cms->d.envelopedData->encryptedContentInfo;
681 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_NO_KEY);
685 if (AES_set_encrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
686 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT,
687 CMS_R_ERROR_SETTING_KEY);
691 wkey = OPENSSL_malloc(ec->keylen + 8);
694 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
698 wkeylen = AES_wrap_key(&actx, NULL, wkey, ec->key, ec->keylen);
701 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_WRAP_ERROR);
705 ASN1_STRING_set0(kekri->encryptedKey, wkey, wkeylen);
713 OPENSSL_cleanse(&actx, sizeof(actx));
719 /* Decrypt content key in KEK recipient info */
721 static int cms_RecipientInfo_kekri_decrypt(CMS_ContentInfo *cms,
722 CMS_RecipientInfo *ri)
724 CMS_EncryptedContentInfo *ec;
725 CMS_KEKRecipientInfo *kekri;
727 unsigned char *ukey = NULL;
731 ec = cms->d.envelopedData->encryptedContentInfo;
736 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_NO_KEY);
740 wrap_nid = OBJ_obj2nid(kekri->keyEncryptionAlgorithm->algorithm);
741 if (aes_wrap_keylen(wrap_nid) != kekri->keylen) {
742 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
743 CMS_R_INVALID_KEY_LENGTH);
747 /* If encrypted key length is invalid don't bother */
749 if (kekri->encryptedKey->length < 16) {
750 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
751 CMS_R_INVALID_ENCRYPTED_KEY_LENGTH);
755 if (AES_set_decrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
756 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
757 CMS_R_ERROR_SETTING_KEY);
761 ukey = OPENSSL_malloc(kekri->encryptedKey->length - 8);
764 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, ERR_R_MALLOC_FAILURE);
768 ukeylen = AES_unwrap_key(&actx, NULL, ukey,
769 kekri->encryptedKey->data,
770 kekri->encryptedKey->length);
773 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_UNWRAP_ERROR);
778 ec->keylen = ukeylen;
786 OPENSSL_cleanse(&actx, sizeof(actx));
792 int CMS_RecipientInfo_decrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
795 case CMS_RECIPINFO_TRANS:
796 return cms_RecipientInfo_ktri_decrypt(cms, ri);
798 case CMS_RECIPINFO_KEK:
799 return cms_RecipientInfo_kekri_decrypt(cms, ri);
801 case CMS_RECIPINFO_PASS:
802 return cms_RecipientInfo_pwri_crypt(cms, ri, 0);
805 CMSerr(CMS_F_CMS_RECIPIENTINFO_DECRYPT,
806 CMS_R_UNSUPPORTED_RECPIENTINFO_TYPE);
811 int CMS_RecipientInfo_encrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
814 case CMS_RECIPINFO_TRANS:
815 return cms_RecipientInfo_ktri_encrypt(cms, ri);
817 case CMS_RECIPINFO_AGREE:
818 return cms_RecipientInfo_kari_encrypt(cms, ri);
820 case CMS_RECIPINFO_KEK:
821 return cms_RecipientInfo_kekri_encrypt(cms, ri);
823 case CMS_RECIPINFO_PASS:
824 return cms_RecipientInfo_pwri_crypt(cms, ri, 1);
827 CMSerr(CMS_F_CMS_RECIPIENTINFO_ENCRYPT,
828 CMS_R_UNSUPPORTED_RECIPIENT_TYPE);
833 /* Check structures and fixup version numbers (if necessary) */
835 static void cms_env_set_originfo_version(CMS_EnvelopedData *env)
837 CMS_OriginatorInfo *org = env->originatorInfo;
841 for (i = 0; i < sk_CMS_CertificateChoices_num(org->certificates); i++) {
842 CMS_CertificateChoices *cch;
843 cch = sk_CMS_CertificateChoices_value(org->certificates, i);
844 if (cch->type == CMS_CERTCHOICE_OTHER) {
847 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
848 if (env->version < 3)
853 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(org->crls); i++) {
854 CMS_RevocationInfoChoice *rch;
855 rch = sk_CMS_RevocationInfoChoice_value(org->crls, i);
856 if (rch->type == CMS_REVCHOICE_OTHER) {
863 static void cms_env_set_version(CMS_EnvelopedData *env)
866 CMS_RecipientInfo *ri;
869 * Can't set version higher than 4 so if 4 or more already nothing to do.
871 if (env->version >= 4)
874 cms_env_set_originfo_version(env);
876 if (env->version >= 3)
879 for (i = 0; i < sk_CMS_RecipientInfo_num(env->recipientInfos); i++) {
880 ri = sk_CMS_RecipientInfo_value(env->recipientInfos, i);
881 if (ri->type == CMS_RECIPINFO_PASS || ri->type == CMS_RECIPINFO_OTHER) {
884 } else if (ri->type != CMS_RECIPINFO_TRANS
885 || ri->d.ktri->version != 0) {
889 if (env->version == 2)
891 if (env->originatorInfo || env->unprotectedAttrs)
896 BIO *cms_EnvelopedData_init_bio(CMS_ContentInfo *cms)
898 CMS_EncryptedContentInfo *ec;
899 STACK_OF(CMS_RecipientInfo) *rinfos;
900 CMS_RecipientInfo *ri;
904 /* Get BIO first to set up key */
906 ec = cms->d.envelopedData->encryptedContentInfo;
907 ret = cms_EncryptedContent_init_bio(ec);
909 /* If error or no cipher end of processing */
911 if (!ret || !ec->cipher)
914 /* Now encrypt content key according to each RecipientInfo type */
916 rinfos = cms->d.envelopedData->recipientInfos;
918 for (i = 0; i < sk_CMS_RecipientInfo_num(rinfos); i++) {
919 ri = sk_CMS_RecipientInfo_value(rinfos, i);
920 if (CMS_RecipientInfo_encrypt(cms, ri) <= 0) {
921 CMSerr(CMS_F_CMS_ENVELOPEDDATA_INIT_BIO,
922 CMS_R_ERROR_SETTING_RECIPIENTINFO);
926 cms_env_set_version(cms->d.envelopedData);
932 OPENSSL_clear_free(ec->key, ec->keylen);
943 * Get RecipientInfo type (if any) supported by a key (public or private). To
944 * retain compatibility with previous behaviour if the ctrl value isn't
945 * supported we assume key transport.
947 int cms_pkey_get_ri_type(EVP_PKEY *pk)
949 if (pk->ameth && pk->ameth->pkey_ctrl) {
951 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_RI_TYPE, 0, &r);
955 return CMS_RECIPINFO_TRANS;