2 * Copyright 2008-2016 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
10 #include "internal/cryptlib.h"
11 #include <openssl/asn1t.h>
12 #include <openssl/pem.h>
13 #include <openssl/x509v3.h>
14 #include <openssl/err.h>
15 #include <openssl/cms.h>
16 #include <openssl/aes.h>
18 #include "internal/asn1_int.h"
19 #include "internal/evp_int.h"
21 /* CMS EnvelopedData Utilities */
23 CMS_EnvelopedData *cms_get0_enveloped(CMS_ContentInfo *cms)
25 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_enveloped) {
26 CMSerr(CMS_F_CMS_GET0_ENVELOPED,
27 CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
30 return cms->d.envelopedData;
33 static CMS_EnvelopedData *cms_enveloped_data_init(CMS_ContentInfo *cms)
35 if (cms->d.other == NULL) {
36 cms->d.envelopedData = M_ASN1_new_of(CMS_EnvelopedData);
37 if (!cms->d.envelopedData) {
38 CMSerr(CMS_F_CMS_ENVELOPED_DATA_INIT, ERR_R_MALLOC_FAILURE);
41 cms->d.envelopedData->version = 0;
42 cms->d.envelopedData->encryptedContentInfo->contentType =
43 OBJ_nid2obj(NID_pkcs7_data);
44 ASN1_OBJECT_free(cms->contentType);
45 cms->contentType = OBJ_nid2obj(NID_pkcs7_enveloped);
46 return cms->d.envelopedData;
48 return cms_get0_enveloped(cms);
51 int cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
55 if (ri->type == CMS_RECIPINFO_TRANS)
56 pkey = ri->d.ktri->pkey;
57 else if (ri->type == CMS_RECIPINFO_AGREE) {
58 EVP_PKEY_CTX *pctx = ri->d.kari->pctx;
61 pkey = EVP_PKEY_CTX_get0_pkey(pctx);
66 if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
68 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_ENVELOPE, cmd, ri);
70 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL,
71 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
75 CMSerr(CMS_F_CMS_ENV_ASN1_CTRL, CMS_R_CTRL_FAILURE);
81 STACK_OF(CMS_RecipientInfo) *CMS_get0_RecipientInfos(CMS_ContentInfo *cms)
83 CMS_EnvelopedData *env;
84 env = cms_get0_enveloped(cms);
87 return env->recipientInfos;
90 int CMS_RecipientInfo_type(CMS_RecipientInfo *ri)
95 EVP_PKEY_CTX *CMS_RecipientInfo_get0_pkey_ctx(CMS_RecipientInfo *ri)
97 if (ri->type == CMS_RECIPINFO_TRANS)
98 return ri->d.ktri->pctx;
99 else if (ri->type == CMS_RECIPINFO_AGREE)
100 return ri->d.kari->pctx;
104 CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher)
106 CMS_ContentInfo *cms;
107 CMS_EnvelopedData *env;
108 cms = CMS_ContentInfo_new();
111 env = cms_enveloped_data_init(cms);
114 if (!cms_EncryptedContent_init(env->encryptedContentInfo,
119 CMS_ContentInfo_free(cms);
120 CMSerr(CMS_F_CMS_ENVELOPEDDATA_CREATE, ERR_R_MALLOC_FAILURE);
124 /* Key Transport Recipient Info (KTRI) routines */
126 /* Initialise a ktri based on passed certificate and key */
128 static int cms_RecipientInfo_ktri_init(CMS_RecipientInfo *ri, X509 *recip,
129 EVP_PKEY *pk, unsigned int flags)
131 CMS_KeyTransRecipientInfo *ktri;
134 ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo);
137 ri->type = CMS_RECIPINFO_TRANS;
141 if (flags & CMS_USE_KEYID) {
143 idtype = CMS_RECIPINFO_KEYIDENTIFIER;
146 idtype = CMS_RECIPINFO_ISSUER_SERIAL;
150 * Not a typo: RecipientIdentifier and SignerIdentifier are the same
154 if (!cms_set1_SignerIdentifier(ktri->rid, recip, idtype))
163 if (flags & CMS_KEY_PARAM) {
164 ktri->pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
165 if (ktri->pctx == NULL)
167 if (EVP_PKEY_encrypt_init(ktri->pctx) <= 0)
169 } else if (!cms_env_asn1_ctrl(ri, 0))
175 * Add a recipient certificate using appropriate type of RecipientInfo
178 CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms,
179 X509 *recip, unsigned int flags)
181 CMS_RecipientInfo *ri = NULL;
182 CMS_EnvelopedData *env;
184 env = cms_get0_enveloped(cms);
188 /* Initialize recipient info */
189 ri = M_ASN1_new_of(CMS_RecipientInfo);
193 pk = X509_get0_pubkey(recip);
195 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, CMS_R_ERROR_GETTING_PUBLIC_KEY);
199 switch (cms_pkey_get_ri_type(pk)) {
201 case CMS_RECIPINFO_TRANS:
202 if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags))
206 case CMS_RECIPINFO_AGREE:
207 if (!cms_RecipientInfo_kari_init(ri, recip, pk, flags))
212 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT,
213 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
218 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
224 CMSerr(CMS_F_CMS_ADD1_RECIPIENT_CERT, ERR_R_MALLOC_FAILURE);
226 M_ASN1_free_of(ri, CMS_RecipientInfo);
231 int CMS_RecipientInfo_ktri_get0_algs(CMS_RecipientInfo *ri,
232 EVP_PKEY **pk, X509 **recip,
235 CMS_KeyTransRecipientInfo *ktri;
236 if (ri->type != CMS_RECIPINFO_TRANS) {
237 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_ALGS,
238 CMS_R_NOT_KEY_TRANSPORT);
247 *recip = ktri->recip;
249 *palg = ktri->keyEncryptionAlgorithm;
253 int CMS_RecipientInfo_ktri_get0_signer_id(CMS_RecipientInfo *ri,
254 ASN1_OCTET_STRING **keyid,
258 CMS_KeyTransRecipientInfo *ktri;
259 if (ri->type != CMS_RECIPINFO_TRANS) {
260 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_GET0_SIGNER_ID,
261 CMS_R_NOT_KEY_TRANSPORT);
266 return cms_SignerIdentifier_get0_signer_id(ktri->rid, keyid, issuer, sno);
269 int CMS_RecipientInfo_ktri_cert_cmp(CMS_RecipientInfo *ri, X509 *cert)
271 if (ri->type != CMS_RECIPINFO_TRANS) {
272 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_CERT_CMP,
273 CMS_R_NOT_KEY_TRANSPORT);
276 return cms_SignerIdentifier_cert_cmp(ri->d.ktri->rid, cert);
279 int CMS_RecipientInfo_set0_pkey(CMS_RecipientInfo *ri, EVP_PKEY *pkey)
281 if (ri->type != CMS_RECIPINFO_TRANS) {
282 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_PKEY, CMS_R_NOT_KEY_TRANSPORT);
285 ri->d.ktri->pkey = pkey;
289 /* Encrypt content key in key transport recipient info */
291 static int cms_RecipientInfo_ktri_encrypt(CMS_ContentInfo *cms,
292 CMS_RecipientInfo *ri)
294 CMS_KeyTransRecipientInfo *ktri;
295 CMS_EncryptedContentInfo *ec;
297 unsigned char *ek = NULL;
302 if (ri->type != CMS_RECIPINFO_TRANS) {
303 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_NOT_KEY_TRANSPORT);
307 ec = cms->d.envelopedData->encryptedContentInfo;
312 if (!cms_env_asn1_ctrl(ri, 0))
315 pctx = EVP_PKEY_CTX_new(ktri->pkey, NULL);
319 if (EVP_PKEY_encrypt_init(pctx) <= 0)
323 if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT,
324 EVP_PKEY_CTRL_CMS_ENCRYPT, 0, ri) <= 0) {
325 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, CMS_R_CTRL_ERROR);
329 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, ec->key, ec->keylen) <= 0)
332 ek = OPENSSL_malloc(eklen);
335 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
339 if (EVP_PKEY_encrypt(pctx, ek, &eklen, ec->key, ec->keylen) <= 0)
342 ASN1_STRING_set0(ktri->encryptedKey, ek, eklen);
348 EVP_PKEY_CTX_free(pctx);
355 /* Decrypt content key from KTRI */
357 static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
358 CMS_RecipientInfo *ri)
360 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
361 EVP_PKEY *pkey = ktri->pkey;
362 unsigned char *ek = NULL;
365 CMS_EncryptedContentInfo *ec;
366 ec = cms->d.envelopedData->encryptedContentInfo;
368 if (ktri->pkey == NULL) {
369 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_NO_PRIVATE_KEY);
373 ktri->pctx = EVP_PKEY_CTX_new(pkey, NULL);
374 if (ktri->pctx == NULL)
377 if (EVP_PKEY_decrypt_init(ktri->pctx) <= 0)
380 if (!cms_env_asn1_ctrl(ri, 1))
383 if (EVP_PKEY_CTX_ctrl(ktri->pctx, -1, EVP_PKEY_OP_DECRYPT,
384 EVP_PKEY_CTRL_CMS_DECRYPT, 0, ri) <= 0) {
385 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CTRL_ERROR);
389 if (EVP_PKEY_decrypt(ktri->pctx, NULL, &eklen,
390 ktri->encryptedKey->data,
391 ktri->encryptedKey->length) <= 0)
394 ek = OPENSSL_malloc(eklen);
397 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, ERR_R_MALLOC_FAILURE);
401 if (EVP_PKEY_decrypt(ktri->pctx, ek, &eklen,
402 ktri->encryptedKey->data,
403 ktri->encryptedKey->length) <= 0) {
404 CMSerr(CMS_F_CMS_RECIPIENTINFO_KTRI_DECRYPT, CMS_R_CMS_LIB);
410 OPENSSL_clear_free(ec->key, ec->keylen);
415 EVP_PKEY_CTX_free(ktri->pctx);
423 /* Key Encrypted Key (KEK) RecipientInfo routines */
425 int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
426 const unsigned char *id, size_t idlen)
428 ASN1_OCTET_STRING tmp_os;
429 CMS_KEKRecipientInfo *kekri;
430 if (ri->type != CMS_RECIPINFO_KEK) {
431 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ID_CMP, CMS_R_NOT_KEK);
435 tmp_os.type = V_ASN1_OCTET_STRING;
437 tmp_os.data = (unsigned char *)id;
438 tmp_os.length = (int)idlen;
439 return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
442 /* For now hard code AES key wrap info */
444 static size_t aes_wrap_keylen(int nid)
447 case NID_id_aes128_wrap:
450 case NID_id_aes192_wrap:
453 case NID_id_aes256_wrap:
461 CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid,
462 unsigned char *key, size_t keylen,
463 unsigned char *id, size_t idlen,
464 ASN1_GENERALIZEDTIME *date,
465 ASN1_OBJECT *otherTypeId,
466 ASN1_TYPE *otherType)
468 CMS_RecipientInfo *ri = NULL;
469 CMS_EnvelopedData *env;
470 CMS_KEKRecipientInfo *kekri;
471 env = cms_get0_enveloped(cms);
475 if (nid == NID_undef) {
478 nid = NID_id_aes128_wrap;
482 nid = NID_id_aes192_wrap;
486 nid = NID_id_aes256_wrap;
490 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
496 size_t exp_keylen = aes_wrap_keylen(nid);
499 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY,
500 CMS_R_UNSUPPORTED_KEK_ALGORITHM);
504 if (keylen != exp_keylen) {
505 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, CMS_R_INVALID_KEY_LENGTH);
511 /* Initialize recipient info */
512 ri = M_ASN1_new_of(CMS_RecipientInfo);
516 ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo);
519 ri->type = CMS_RECIPINFO_KEK;
524 kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute);
525 if (kekri->kekid->other == NULL)
529 if (!sk_CMS_RecipientInfo_push(env->recipientInfos, ri))
532 /* After this point no calls can fail */
537 kekri->keylen = keylen;
539 ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen);
541 kekri->kekid->date = date;
543 if (kekri->kekid->other) {
544 kekri->kekid->other->keyAttrId = otherTypeId;
545 kekri->kekid->other->keyAttr = otherType;
548 X509_ALGOR_set0(kekri->keyEncryptionAlgorithm,
549 OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL);
554 CMSerr(CMS_F_CMS_ADD0_RECIPIENT_KEY, ERR_R_MALLOC_FAILURE);
556 M_ASN1_free_of(ri, CMS_RecipientInfo);
561 int CMS_RecipientInfo_kekri_get0_id(CMS_RecipientInfo *ri,
563 ASN1_OCTET_STRING **pid,
564 ASN1_GENERALIZEDTIME **pdate,
565 ASN1_OBJECT **potherid,
566 ASN1_TYPE **pothertype)
568 CMS_KEKIdentifier *rkid;
569 if (ri->type != CMS_RECIPINFO_KEK) {
570 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_GET0_ID, CMS_R_NOT_KEK);
573 rkid = ri->d.kekri->kekid;
575 *palg = ri->d.kekri->keyEncryptionAlgorithm;
577 *pid = rkid->keyIdentifier;
582 *potherid = rkid->other->keyAttrId;
588 *pothertype = rkid->other->keyAttr;
595 int CMS_RecipientInfo_set0_key(CMS_RecipientInfo *ri,
596 unsigned char *key, size_t keylen)
598 CMS_KEKRecipientInfo *kekri;
599 if (ri->type != CMS_RECIPINFO_KEK) {
600 CMSerr(CMS_F_CMS_RECIPIENTINFO_SET0_KEY, CMS_R_NOT_KEK);
606 kekri->keylen = keylen;
610 /* Encrypt content key in KEK recipient info */
612 static int cms_RecipientInfo_kekri_encrypt(CMS_ContentInfo *cms,
613 CMS_RecipientInfo *ri)
615 CMS_EncryptedContentInfo *ec;
616 CMS_KEKRecipientInfo *kekri;
618 unsigned char *wkey = NULL;
622 ec = cms->d.envelopedData->encryptedContentInfo;
627 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_NO_KEY);
631 if (AES_set_encrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
632 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT,
633 CMS_R_ERROR_SETTING_KEY);
637 wkey = OPENSSL_malloc(ec->keylen + 8);
640 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, ERR_R_MALLOC_FAILURE);
644 wkeylen = AES_wrap_key(&actx, NULL, wkey, ec->key, ec->keylen);
647 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_ENCRYPT, CMS_R_WRAP_ERROR);
651 ASN1_STRING_set0(kekri->encryptedKey, wkey, wkeylen);
659 OPENSSL_cleanse(&actx, sizeof(actx));
665 /* Decrypt content key in KEK recipient info */
667 static int cms_RecipientInfo_kekri_decrypt(CMS_ContentInfo *cms,
668 CMS_RecipientInfo *ri)
670 CMS_EncryptedContentInfo *ec;
671 CMS_KEKRecipientInfo *kekri;
673 unsigned char *ukey = NULL;
677 ec = cms->d.envelopedData->encryptedContentInfo;
682 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_NO_KEY);
686 wrap_nid = OBJ_obj2nid(kekri->keyEncryptionAlgorithm->algorithm);
687 if (aes_wrap_keylen(wrap_nid) != kekri->keylen) {
688 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
689 CMS_R_INVALID_KEY_LENGTH);
693 /* If encrypted key length is invalid don't bother */
695 if (kekri->encryptedKey->length < 16) {
696 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
697 CMS_R_INVALID_ENCRYPTED_KEY_LENGTH);
701 if (AES_set_decrypt_key(kekri->key, kekri->keylen << 3, &actx)) {
702 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT,
703 CMS_R_ERROR_SETTING_KEY);
707 ukey = OPENSSL_malloc(kekri->encryptedKey->length - 8);
710 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, ERR_R_MALLOC_FAILURE);
714 ukeylen = AES_unwrap_key(&actx, NULL, ukey,
715 kekri->encryptedKey->data,
716 kekri->encryptedKey->length);
719 CMSerr(CMS_F_CMS_RECIPIENTINFO_KEKRI_DECRYPT, CMS_R_UNWRAP_ERROR);
724 ec->keylen = ukeylen;
732 OPENSSL_cleanse(&actx, sizeof(actx));
738 int CMS_RecipientInfo_decrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
741 case CMS_RECIPINFO_TRANS:
742 return cms_RecipientInfo_ktri_decrypt(cms, ri);
744 case CMS_RECIPINFO_KEK:
745 return cms_RecipientInfo_kekri_decrypt(cms, ri);
747 case CMS_RECIPINFO_PASS:
748 return cms_RecipientInfo_pwri_crypt(cms, ri, 0);
751 CMSerr(CMS_F_CMS_RECIPIENTINFO_DECRYPT,
752 CMS_R_UNSUPPORTED_RECPIENTINFO_TYPE);
757 int CMS_RecipientInfo_encrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
760 case CMS_RECIPINFO_TRANS:
761 return cms_RecipientInfo_ktri_encrypt(cms, ri);
763 case CMS_RECIPINFO_AGREE:
764 return cms_RecipientInfo_kari_encrypt(cms, ri);
766 case CMS_RECIPINFO_KEK:
767 return cms_RecipientInfo_kekri_encrypt(cms, ri);
769 case CMS_RECIPINFO_PASS:
770 return cms_RecipientInfo_pwri_crypt(cms, ri, 1);
773 CMSerr(CMS_F_CMS_RECIPIENTINFO_ENCRYPT,
774 CMS_R_UNSUPPORTED_RECIPIENT_TYPE);
779 /* Check structures and fixup version numbers (if necessary) */
781 static void cms_env_set_originfo_version(CMS_EnvelopedData *env)
783 CMS_OriginatorInfo *org = env->originatorInfo;
787 for (i = 0; i < sk_CMS_CertificateChoices_num(org->certificates); i++) {
788 CMS_CertificateChoices *cch;
789 cch = sk_CMS_CertificateChoices_value(org->certificates, i);
790 if (cch->type == CMS_CERTCHOICE_OTHER) {
793 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
794 if (env->version < 3)
799 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(org->crls); i++) {
800 CMS_RevocationInfoChoice *rch;
801 rch = sk_CMS_RevocationInfoChoice_value(org->crls, i);
802 if (rch->type == CMS_REVCHOICE_OTHER) {
809 static void cms_env_set_version(CMS_EnvelopedData *env)
812 CMS_RecipientInfo *ri;
815 * Can't set version higher than 4 so if 4 or more already nothing to do.
817 if (env->version >= 4)
820 cms_env_set_originfo_version(env);
822 if (env->version >= 3)
825 for (i = 0; i < sk_CMS_RecipientInfo_num(env->recipientInfos); i++) {
826 ri = sk_CMS_RecipientInfo_value(env->recipientInfos, i);
827 if (ri->type == CMS_RECIPINFO_PASS || ri->type == CMS_RECIPINFO_OTHER) {
830 } else if (ri->type != CMS_RECIPINFO_TRANS
831 || ri->d.ktri->version != 0) {
835 if (env->originatorInfo || env->unprotectedAttrs)
837 if (env->version == 2)
842 BIO *cms_EnvelopedData_init_bio(CMS_ContentInfo *cms)
844 CMS_EncryptedContentInfo *ec;
845 STACK_OF(CMS_RecipientInfo) *rinfos;
846 CMS_RecipientInfo *ri;
850 /* Get BIO first to set up key */
852 ec = cms->d.envelopedData->encryptedContentInfo;
853 ret = cms_EncryptedContent_init_bio(ec);
855 /* If error or no cipher end of processing */
857 if (!ret || !ec->cipher)
860 /* Now encrypt content key according to each RecipientInfo type */
862 rinfos = cms->d.envelopedData->recipientInfos;
864 for (i = 0; i < sk_CMS_RecipientInfo_num(rinfos); i++) {
865 ri = sk_CMS_RecipientInfo_value(rinfos, i);
866 if (CMS_RecipientInfo_encrypt(cms, ri) <= 0) {
867 CMSerr(CMS_F_CMS_ENVELOPEDDATA_INIT_BIO,
868 CMS_R_ERROR_SETTING_RECIPIENTINFO);
872 cms_env_set_version(cms->d.envelopedData);
878 OPENSSL_clear_free(ec->key, ec->keylen);
889 * Get RecipientInfo type (if any) supported by a key (public or private). To
890 * retain compatibility with previous behaviour if the ctrl value isn't
891 * supported we assume key transport.
893 int cms_pkey_get_ri_type(EVP_PKEY *pk)
895 if (pk->ameth && pk->ameth->pkey_ctrl) {
897 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_RI_TYPE, 0, &r);
901 return CMS_RECIPINFO_TRANS;