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source: vbox/trunk/src/libs/openssl-3.1.0/crypto/cms/cms_env.c@ 100908

最後變更 在這個檔案從100908是 99366,由 vboxsync 提交於 22 月 前

openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
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1/*
2 * Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
8 */
9
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/evp.h>
17#include "internal/sizes.h"
18#include "crypto/asn1.h"
19#include "crypto/evp.h"
20#include "crypto/x509.h"
21#include "cms_local.h"
22
23/* CMS EnvelopedData Utilities */
24static void cms_env_set_version(CMS_EnvelopedData *env);
25
26#define CMS_ENVELOPED_STANDARD 1
27#define CMS_ENVELOPED_AUTH 2
28
29static int cms_get_enveloped_type(const CMS_ContentInfo *cms)
30{
31 int nid = OBJ_obj2nid(cms->contentType);
32
33 switch (nid) {
34 case NID_pkcs7_enveloped:
35 return CMS_ENVELOPED_STANDARD;
36
37 case NID_id_smime_ct_authEnvelopedData:
38 return CMS_ENVELOPED_AUTH;
39
40 default:
41 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
42 return 0;
43 }
44}
45
46CMS_EnvelopedData *ossl_cms_get0_enveloped(CMS_ContentInfo *cms)
47{
48 if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_enveloped) {
49 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
50 return NULL;
51 }
52 return cms->d.envelopedData;
53}
54
55CMS_AuthEnvelopedData *ossl_cms_get0_auth_enveloped(CMS_ContentInfo *cms)
56{
57 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_authEnvelopedData) {
58 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_TYPE_NOT_ENVELOPED_DATA);
59 return NULL;
60 }
61 return cms->d.authEnvelopedData;
62}
63
64static CMS_EnvelopedData *cms_enveloped_data_init(CMS_ContentInfo *cms)
65{
66 if (cms->d.other == NULL) {
67 cms->d.envelopedData = M_ASN1_new_of(CMS_EnvelopedData);
68 if (cms->d.envelopedData == NULL) {
69 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
70 return NULL;
71 }
72 cms->d.envelopedData->version = 0;
73 cms->d.envelopedData->encryptedContentInfo->contentType =
74 OBJ_nid2obj(NID_pkcs7_data);
75 ASN1_OBJECT_free(cms->contentType);
76 cms->contentType = OBJ_nid2obj(NID_pkcs7_enveloped);
77 return cms->d.envelopedData;
78 }
79 return ossl_cms_get0_enveloped(cms);
80}
81
82static CMS_AuthEnvelopedData *
83cms_auth_enveloped_data_init(CMS_ContentInfo *cms)
84{
85 if (cms->d.other == NULL) {
86 cms->d.authEnvelopedData = M_ASN1_new_of(CMS_AuthEnvelopedData);
87 if (cms->d.authEnvelopedData == NULL) {
88 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
89 return NULL;
90 }
91 /* Defined in RFC 5083 - Section 2.1. "AuthEnvelopedData Type" */
92 cms->d.authEnvelopedData->version = 0;
93 cms->d.authEnvelopedData->authEncryptedContentInfo->contentType =
94 OBJ_nid2obj(NID_pkcs7_data);
95 ASN1_OBJECT_free(cms->contentType);
96 cms->contentType = OBJ_nid2obj(NID_id_smime_ct_authEnvelopedData);
97 return cms->d.authEnvelopedData;
98 }
99 return ossl_cms_get0_auth_enveloped(cms);
100}
101
102int ossl_cms_env_asn1_ctrl(CMS_RecipientInfo *ri, int cmd)
103{
104 EVP_PKEY *pkey;
105 int i;
106 if (ri->type == CMS_RECIPINFO_TRANS)
107 pkey = ri->d.ktri->pkey;
108 else if (ri->type == CMS_RECIPINFO_AGREE) {
109 EVP_PKEY_CTX *pctx = ri->d.kari->pctx;
110
111 if (pctx == NULL)
112 return 0;
113 pkey = EVP_PKEY_CTX_get0_pkey(pctx);
114 if (pkey == NULL)
115 return 0;
116 } else
117 return 0;
118
119 if (EVP_PKEY_is_a(pkey, "DHX") || EVP_PKEY_is_a(pkey, "DH"))
120 return ossl_cms_dh_envelope(ri, cmd);
121 else if (EVP_PKEY_is_a(pkey, "EC"))
122 return ossl_cms_ecdh_envelope(ri, cmd);
123 else if (EVP_PKEY_is_a(pkey, "RSA"))
124 return ossl_cms_rsa_envelope(ri, cmd);
125
126 /* Something else? We'll give engines etc a chance to handle this */
127 if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
128 return 1;
129 i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_ENVELOPE, cmd, ri);
130 if (i == -2) {
131 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
132 return 0;
133 }
134 if (i <= 0) {
135 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_FAILURE);
136 return 0;
137 }
138 return 1;
139}
140
141CMS_EncryptedContentInfo *ossl_cms_get0_env_enc_content(const CMS_ContentInfo *cms)
142{
143 switch (cms_get_enveloped_type(cms)) {
144 case CMS_ENVELOPED_STANDARD:
145 return cms->d.envelopedData->encryptedContentInfo;
146
147 case CMS_ENVELOPED_AUTH:
148 return cms->d.authEnvelopedData->authEncryptedContentInfo;
149
150 default:
151 return NULL;
152 }
153}
154
155STACK_OF(CMS_RecipientInfo) *CMS_get0_RecipientInfos(CMS_ContentInfo *cms)
156{
157 switch (cms_get_enveloped_type(cms)) {
158 case CMS_ENVELOPED_STANDARD:
159 return cms->d.envelopedData->recipientInfos;
160
161 case CMS_ENVELOPED_AUTH:
162 return cms->d.authEnvelopedData->recipientInfos;
163
164 default:
165 return NULL;
166 }
167}
168
169void ossl_cms_RecipientInfos_set_cmsctx(CMS_ContentInfo *cms)
170{
171 int i;
172 CMS_RecipientInfo *ri;
173 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
174 STACK_OF(CMS_RecipientInfo) *rinfos = CMS_get0_RecipientInfos(cms);
175
176 for (i = 0; i < sk_CMS_RecipientInfo_num(rinfos); i++) {
177 ri = sk_CMS_RecipientInfo_value(rinfos, i);
178 if (ri != NULL) {
179 switch (ri->type) {
180 case CMS_RECIPINFO_AGREE:
181 ri->d.kari->cms_ctx = ctx;
182 break;
183 case CMS_RECIPINFO_TRANS:
184 ri->d.ktri->cms_ctx = ctx;
185 ossl_x509_set0_libctx(ri->d.ktri->recip,
186 ossl_cms_ctx_get0_libctx(ctx),
187 ossl_cms_ctx_get0_propq(ctx));
188 break;
189 case CMS_RECIPINFO_KEK:
190 ri->d.kekri->cms_ctx = ctx;
191 break;
192 case CMS_RECIPINFO_PASS:
193 ri->d.pwri->cms_ctx = ctx;
194 break;
195 default:
196 break;
197 }
198 }
199 }
200}
201
202int CMS_RecipientInfo_type(CMS_RecipientInfo *ri)
203{
204 return ri->type;
205}
206
207EVP_PKEY_CTX *CMS_RecipientInfo_get0_pkey_ctx(CMS_RecipientInfo *ri)
208{
209 if (ri->type == CMS_RECIPINFO_TRANS)
210 return ri->d.ktri->pctx;
211 else if (ri->type == CMS_RECIPINFO_AGREE)
212 return ri->d.kari->pctx;
213 return NULL;
214}
215
216CMS_ContentInfo *CMS_EnvelopedData_create_ex(const EVP_CIPHER *cipher,
217 OSSL_LIB_CTX *libctx,
218 const char *propq)
219{
220 CMS_ContentInfo *cms;
221 CMS_EnvelopedData *env;
222
223 cms = CMS_ContentInfo_new_ex(libctx, propq);
224 if (cms == NULL)
225 goto merr;
226 env = cms_enveloped_data_init(cms);
227 if (env == NULL)
228 goto merr;
229
230 if (!ossl_cms_EncryptedContent_init(env->encryptedContentInfo, cipher, NULL,
231 0, ossl_cms_get0_cmsctx(cms)))
232 goto merr;
233 return cms;
234 merr:
235 CMS_ContentInfo_free(cms);
236 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
237 return NULL;
238}
239
240CMS_ContentInfo *CMS_EnvelopedData_create(const EVP_CIPHER *cipher)
241{
242 return CMS_EnvelopedData_create_ex(cipher, NULL, NULL);
243}
244
245CMS_ContentInfo *
246CMS_AuthEnvelopedData_create_ex(const EVP_CIPHER *cipher, OSSL_LIB_CTX *libctx,
247 const char *propq)
248{
249 CMS_ContentInfo *cms;
250 CMS_AuthEnvelopedData *aenv;
251
252 cms = CMS_ContentInfo_new_ex(libctx, propq);
253 if (cms == NULL)
254 goto merr;
255 aenv = cms_auth_enveloped_data_init(cms);
256 if (aenv == NULL)
257 goto merr;
258 if (!ossl_cms_EncryptedContent_init(aenv->authEncryptedContentInfo,
259 cipher, NULL, 0,
260 ossl_cms_get0_cmsctx(cms)))
261 goto merr;
262 return cms;
263 merr:
264 CMS_ContentInfo_free(cms);
265 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
266 return NULL;
267}
268
269
270CMS_ContentInfo *CMS_AuthEnvelopedData_create(const EVP_CIPHER *cipher)
271{
272 return CMS_AuthEnvelopedData_create_ex(cipher, NULL, NULL);
273}
274
275/* Key Transport Recipient Info (KTRI) routines */
276
277/* Initialise a ktri based on passed certificate and key */
278
279static int cms_RecipientInfo_ktri_init(CMS_RecipientInfo *ri, X509 *recip,
280 EVP_PKEY *pk, unsigned int flags,
281 const CMS_CTX *ctx)
282{
283 CMS_KeyTransRecipientInfo *ktri;
284 int idtype;
285
286 ri->d.ktri = M_ASN1_new_of(CMS_KeyTransRecipientInfo);
287 if (!ri->d.ktri)
288 return 0;
289 ri->type = CMS_RECIPINFO_TRANS;
290
291 ktri = ri->d.ktri;
292 ktri->cms_ctx = ctx;
293
294 if (flags & CMS_USE_KEYID) {
295 ktri->version = 2;
296 idtype = CMS_RECIPINFO_KEYIDENTIFIER;
297 } else {
298 ktri->version = 0;
299 idtype = CMS_RECIPINFO_ISSUER_SERIAL;
300 }
301
302 /*
303 * Not a typo: RecipientIdentifier and SignerIdentifier are the same
304 * structure.
305 */
306
307 if (!ossl_cms_set1_SignerIdentifier(ktri->rid, recip, idtype, ctx))
308 return 0;
309
310 X509_up_ref(recip);
311 EVP_PKEY_up_ref(pk);
312
313 ktri->pkey = pk;
314 ktri->recip = recip;
315
316 if (flags & CMS_KEY_PARAM) {
317 ktri->pctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
318 ktri->pkey,
319 ossl_cms_ctx_get0_propq(ctx));
320 if (ktri->pctx == NULL)
321 return 0;
322 if (EVP_PKEY_encrypt_init(ktri->pctx) <= 0)
323 return 0;
324 } else if (!ossl_cms_env_asn1_ctrl(ri, 0))
325 return 0;
326 return 1;
327}
328
329/*
330 * Add a recipient certificate using appropriate type of RecipientInfo
331 */
332
333CMS_RecipientInfo *CMS_add1_recipient(CMS_ContentInfo *cms, X509 *recip,
334 EVP_PKEY *originatorPrivKey,
335 X509 *originator, unsigned int flags)
336{
337 CMS_RecipientInfo *ri = NULL;
338 STACK_OF(CMS_RecipientInfo) *ris;
339 EVP_PKEY *pk = NULL;
340 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
341
342 ris = CMS_get0_RecipientInfos(cms);
343 if (ris == NULL)
344 goto err;
345
346 /* Initialize recipient info */
347 ri = M_ASN1_new_of(CMS_RecipientInfo);
348 if (ri == NULL)
349 goto merr;
350
351 pk = X509_get0_pubkey(recip);
352 if (pk == NULL) {
353 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_GETTING_PUBLIC_KEY);
354 goto err;
355 }
356
357 switch (ossl_cms_pkey_get_ri_type(pk)) {
358
359 case CMS_RECIPINFO_TRANS:
360 if (!cms_RecipientInfo_ktri_init(ri, recip, pk, flags, ctx))
361 goto err;
362 break;
363
364 case CMS_RECIPINFO_AGREE:
365 if (!ossl_cms_RecipientInfo_kari_init(ri, recip, pk, originator,
366 originatorPrivKey, flags, ctx))
367 goto err;
368 break;
369
370 default:
371 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
372 goto err;
373
374 }
375
376 if (!sk_CMS_RecipientInfo_push(ris, ri))
377 goto merr;
378
379 return ri;
380
381 merr:
382 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
383 err:
384 M_ASN1_free_of(ri, CMS_RecipientInfo);
385 return NULL;
386
387}
388
389CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms, X509 *recip,
390 unsigned int flags)
391{
392 return CMS_add1_recipient(cms, recip, NULL, NULL, flags);
393}
394
395int CMS_RecipientInfo_ktri_get0_algs(CMS_RecipientInfo *ri,
396 EVP_PKEY **pk, X509 **recip,
397 X509_ALGOR **palg)
398{
399 CMS_KeyTransRecipientInfo *ktri;
400 if (ri->type != CMS_RECIPINFO_TRANS) {
401 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT);
402 return 0;
403 }
404
405 ktri = ri->d.ktri;
406
407 if (pk)
408 *pk = ktri->pkey;
409 if (recip)
410 *recip = ktri->recip;
411 if (palg)
412 *palg = ktri->keyEncryptionAlgorithm;
413 return 1;
414}
415
416int CMS_RecipientInfo_ktri_get0_signer_id(CMS_RecipientInfo *ri,
417 ASN1_OCTET_STRING **keyid,
418 X509_NAME **issuer,
419 ASN1_INTEGER **sno)
420{
421 CMS_KeyTransRecipientInfo *ktri;
422 if (ri->type != CMS_RECIPINFO_TRANS) {
423 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT);
424 return 0;
425 }
426 ktri = ri->d.ktri;
427
428 return ossl_cms_SignerIdentifier_get0_signer_id(ktri->rid, keyid, issuer,
429 sno);
430}
431
432int CMS_RecipientInfo_ktri_cert_cmp(CMS_RecipientInfo *ri, X509 *cert)
433{
434 if (ri->type != CMS_RECIPINFO_TRANS) {
435 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT);
436 return -2;
437 }
438 return ossl_cms_SignerIdentifier_cert_cmp(ri->d.ktri->rid, cert);
439}
440
441int CMS_RecipientInfo_set0_pkey(CMS_RecipientInfo *ri, EVP_PKEY *pkey)
442{
443 if (ri->type != CMS_RECIPINFO_TRANS) {
444 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT);
445 return 0;
446 }
447 EVP_PKEY_free(ri->d.ktri->pkey);
448 ri->d.ktri->pkey = pkey;
449 return 1;
450}
451
452/* Encrypt content key in key transport recipient info */
453
454static int cms_RecipientInfo_ktri_encrypt(const CMS_ContentInfo *cms,
455 CMS_RecipientInfo *ri)
456{
457 CMS_KeyTransRecipientInfo *ktri;
458 CMS_EncryptedContentInfo *ec;
459 EVP_PKEY_CTX *pctx;
460 unsigned char *ek = NULL;
461 size_t eklen;
462 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
463
464 int ret = 0;
465
466 if (ri->type != CMS_RECIPINFO_TRANS) {
467 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEY_TRANSPORT);
468 return 0;
469 }
470 ktri = ri->d.ktri;
471 ec = ossl_cms_get0_env_enc_content(cms);
472
473 pctx = ktri->pctx;
474
475 if (pctx) {
476 if (!ossl_cms_env_asn1_ctrl(ri, 0))
477 goto err;
478 } else {
479 pctx = EVP_PKEY_CTX_new_from_pkey(ossl_cms_ctx_get0_libctx(ctx),
480 ktri->pkey,
481 ossl_cms_ctx_get0_propq(ctx));
482 if (pctx == NULL)
483 return 0;
484
485 if (EVP_PKEY_encrypt_init(pctx) <= 0)
486 goto err;
487 }
488
489 if (EVP_PKEY_encrypt(pctx, NULL, &eklen, ec->key, ec->keylen) <= 0)
490 goto err;
491
492 ek = OPENSSL_malloc(eklen);
493
494 if (ek == NULL) {
495 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
496 goto err;
497 }
498
499 if (EVP_PKEY_encrypt(pctx, ek, &eklen, ec->key, ec->keylen) <= 0)
500 goto err;
501
502 ASN1_STRING_set0(ktri->encryptedKey, ek, eklen);
503 ek = NULL;
504
505 ret = 1;
506
507 err:
508 EVP_PKEY_CTX_free(pctx);
509 ktri->pctx = NULL;
510 OPENSSL_free(ek);
511 return ret;
512}
513
514/* Decrypt content key from KTRI */
515
516static int cms_RecipientInfo_ktri_decrypt(CMS_ContentInfo *cms,
517 CMS_RecipientInfo *ri)
518{
519 CMS_KeyTransRecipientInfo *ktri = ri->d.ktri;
520 EVP_PKEY *pkey = ktri->pkey;
521 unsigned char *ek = NULL;
522 size_t eklen;
523 int ret = 0;
524 size_t fixlen = 0;
525 const EVP_CIPHER *cipher = NULL;
526 EVP_CIPHER *fetched_cipher = NULL;
527 CMS_EncryptedContentInfo *ec;
528 const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
529 OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
530 const char *propq = ossl_cms_ctx_get0_propq(ctx);
531
532 ec = ossl_cms_get0_env_enc_content(cms);
533
534 if (ktri->pkey == NULL) {
535 ERR_raise(ERR_LIB_CMS, CMS_R_NO_PRIVATE_KEY);
536 return 0;
537 }
538
539 if (cms->d.envelopedData->encryptedContentInfo->havenocert
540 && !cms->d.envelopedData->encryptedContentInfo->debug) {
541 X509_ALGOR *calg = ec->contentEncryptionAlgorithm;
542 char name[OSSL_MAX_NAME_SIZE];
543
544 OBJ_obj2txt(name, sizeof(name), calg->algorithm, 0);
545
546 (void)ERR_set_mark();
547 fetched_cipher = EVP_CIPHER_fetch(libctx, name, propq);
548
549 if (fetched_cipher != NULL)
550 cipher = fetched_cipher;
551 else
552 cipher = EVP_get_cipherbyobj(calg->algorithm);
553 if (cipher == NULL) {
554 (void)ERR_clear_last_mark();
555 ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_CIPHER);
556 return 0;
557 }
558 (void)ERR_pop_to_mark();
559
560 fixlen = EVP_CIPHER_get_key_length(cipher);
561 EVP_CIPHER_free(fetched_cipher);
562 }
563
564 ktri->pctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq);
565 if (ktri->pctx == NULL)
566 goto err;
567
568 if (EVP_PKEY_decrypt_init(ktri->pctx) <= 0)
569 goto err;
570
571 if (!ossl_cms_env_asn1_ctrl(ri, 1))
572 goto err;
573
574 if (EVP_PKEY_decrypt(ktri->pctx, NULL, &eklen,
575 ktri->encryptedKey->data,
576 ktri->encryptedKey->length) <= 0)
577 goto err;
578
579 ek = OPENSSL_malloc(eklen);
580 if (ek == NULL) {
581 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
582 goto err;
583 }
584
585 if (EVP_PKEY_decrypt(ktri->pctx, ek, &eklen,
586 ktri->encryptedKey->data,
587 ktri->encryptedKey->length) <= 0
588 || eklen == 0
589 || (fixlen != 0 && eklen != fixlen)) {
590 ERR_raise(ERR_LIB_CMS, CMS_R_CMS_LIB);
591 goto err;
592 }
593
594 ret = 1;
595
596 OPENSSL_clear_free(ec->key, ec->keylen);
597 ec->key = ek;
598 ec->keylen = eklen;
599
600 err:
601 EVP_PKEY_CTX_free(ktri->pctx);
602 ktri->pctx = NULL;
603 if (!ret)
604 OPENSSL_free(ek);
605
606 return ret;
607}
608
609/* Key Encrypted Key (KEK) RecipientInfo routines */
610
611int CMS_RecipientInfo_kekri_id_cmp(CMS_RecipientInfo *ri,
612 const unsigned char *id, size_t idlen)
613{
614 ASN1_OCTET_STRING tmp_os;
615 CMS_KEKRecipientInfo *kekri;
616 if (ri->type != CMS_RECIPINFO_KEK) {
617 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEK);
618 return -2;
619 }
620 kekri = ri->d.kekri;
621 tmp_os.type = V_ASN1_OCTET_STRING;
622 tmp_os.flags = 0;
623 tmp_os.data = (unsigned char *)id;
624 tmp_os.length = (int)idlen;
625 return ASN1_OCTET_STRING_cmp(&tmp_os, kekri->kekid->keyIdentifier);
626}
627
628/* For now hard code AES key wrap info */
629
630static size_t aes_wrap_keylen(int nid)
631{
632 switch (nid) {
633 case NID_id_aes128_wrap:
634 return 16;
635
636 case NID_id_aes192_wrap:
637 return 24;
638
639 case NID_id_aes256_wrap:
640 return 32;
641
642 default:
643 return 0;
644 }
645}
646
647CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid,
648 unsigned char *key, size_t keylen,
649 unsigned char *id, size_t idlen,
650 ASN1_GENERALIZEDTIME *date,
651 ASN1_OBJECT *otherTypeId,
652 ASN1_TYPE *otherType)
653{
654 CMS_RecipientInfo *ri = NULL;
655 CMS_KEKRecipientInfo *kekri;
656 STACK_OF(CMS_RecipientInfo) *ris = CMS_get0_RecipientInfos(cms);
657
658 if (ris == NULL)
659 goto err;
660
661 if (nid == NID_undef) {
662 switch (keylen) {
663 case 16:
664 nid = NID_id_aes128_wrap;
665 break;
666
667 case 24:
668 nid = NID_id_aes192_wrap;
669 break;
670
671 case 32:
672 nid = NID_id_aes256_wrap;
673 break;
674
675 default:
676 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH);
677 goto err;
678 }
679
680 } else {
681
682 size_t exp_keylen = aes_wrap_keylen(nid);
683
684 if (!exp_keylen) {
685 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_KEK_ALGORITHM);
686 goto err;
687 }
688
689 if (keylen != exp_keylen) {
690 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH);
691 goto err;
692 }
693
694 }
695
696 /* Initialize recipient info */
697 ri = M_ASN1_new_of(CMS_RecipientInfo);
698 if (!ri)
699 goto merr;
700
701 ri->d.kekri = M_ASN1_new_of(CMS_KEKRecipientInfo);
702 if (!ri->d.kekri)
703 goto merr;
704 ri->type = CMS_RECIPINFO_KEK;
705
706 kekri = ri->d.kekri;
707
708 if (otherTypeId) {
709 kekri->kekid->other = M_ASN1_new_of(CMS_OtherKeyAttribute);
710 if (kekri->kekid->other == NULL)
711 goto merr;
712 }
713
714 if (!sk_CMS_RecipientInfo_push(ris, ri))
715 goto merr;
716
717 /* After this point no calls can fail */
718
719 kekri->version = 4;
720
721 kekri->key = key;
722 kekri->keylen = keylen;
723
724 ASN1_STRING_set0(kekri->kekid->keyIdentifier, id, idlen);
725
726 kekri->kekid->date = date;
727
728 if (kekri->kekid->other) {
729 kekri->kekid->other->keyAttrId = otherTypeId;
730 kekri->kekid->other->keyAttr = otherType;
731 }
732
733 X509_ALGOR_set0(kekri->keyEncryptionAlgorithm,
734 OBJ_nid2obj(nid), V_ASN1_UNDEF, NULL);
735
736 return ri;
737
738 merr:
739 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
740 err:
741 M_ASN1_free_of(ri, CMS_RecipientInfo);
742 return NULL;
743}
744
745int CMS_RecipientInfo_kekri_get0_id(CMS_RecipientInfo *ri,
746 X509_ALGOR **palg,
747 ASN1_OCTET_STRING **pid,
748 ASN1_GENERALIZEDTIME **pdate,
749 ASN1_OBJECT **potherid,
750 ASN1_TYPE **pothertype)
751{
752 CMS_KEKIdentifier *rkid;
753 if (ri->type != CMS_RECIPINFO_KEK) {
754 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEK);
755 return 0;
756 }
757 rkid = ri->d.kekri->kekid;
758 if (palg)
759 *palg = ri->d.kekri->keyEncryptionAlgorithm;
760 if (pid)
761 *pid = rkid->keyIdentifier;
762 if (pdate)
763 *pdate = rkid->date;
764 if (potherid) {
765 if (rkid->other)
766 *potherid = rkid->other->keyAttrId;
767 else
768 *potherid = NULL;
769 }
770 if (pothertype) {
771 if (rkid->other)
772 *pothertype = rkid->other->keyAttr;
773 else
774 *pothertype = NULL;
775 }
776 return 1;
777}
778
779int CMS_RecipientInfo_set0_key(CMS_RecipientInfo *ri,
780 unsigned char *key, size_t keylen)
781{
782 CMS_KEKRecipientInfo *kekri;
783 if (ri->type != CMS_RECIPINFO_KEK) {
784 ERR_raise(ERR_LIB_CMS, CMS_R_NOT_KEK);
785 return 0;
786 }
787
788 kekri = ri->d.kekri;
789 kekri->key = key;
790 kekri->keylen = keylen;
791 return 1;
792}
793
794static EVP_CIPHER *cms_get_key_wrap_cipher(size_t keylen, const CMS_CTX *ctx)
795{
796 const char *alg = NULL;
797
798 switch(keylen) {
799 case 16:
800 alg = "AES-128-WRAP";
801 break;
802 case 24:
803 alg = "AES-192-WRAP";
804 break;
805 case 32:
806 alg = "AES-256-WRAP";
807 break;
808 default:
809 return NULL;
810 }
811 return EVP_CIPHER_fetch(ossl_cms_ctx_get0_libctx(ctx), alg,
812 ossl_cms_ctx_get0_propq(ctx));
813}
814
815
816/* Encrypt content key in KEK recipient info */
817
818static int cms_RecipientInfo_kekri_encrypt(const CMS_ContentInfo *cms,
819 CMS_RecipientInfo *ri)
820{
821 CMS_EncryptedContentInfo *ec;
822 CMS_KEKRecipientInfo *kekri;
823 unsigned char *wkey = NULL;
824 int wkeylen;
825 int r = 0;
826 EVP_CIPHER *cipher = NULL;
827 int outlen = 0;
828 EVP_CIPHER_CTX *ctx = NULL;
829 const CMS_CTX *cms_ctx = ossl_cms_get0_cmsctx(cms);
830
831 ec = ossl_cms_get0_env_enc_content(cms);
832 if (ec == NULL)
833 return 0;
834
835 kekri = ri->d.kekri;
836
837 if (kekri->key == NULL) {
838 ERR_raise(ERR_LIB_CMS, CMS_R_NO_KEY);
839 return 0;
840 }
841
842 cipher = cms_get_key_wrap_cipher(kekri->keylen, cms_ctx);
843 if (cipher == NULL) {
844 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH);
845 goto err;
846 }
847
848 /* 8 byte prefix for AES wrap ciphers */
849 wkey = OPENSSL_malloc(ec->keylen + 8);
850 if (wkey == NULL) {
851 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
852 goto err;
853 }
854
855 ctx = EVP_CIPHER_CTX_new();
856 if (ctx == NULL) {
857 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
858 goto err;
859 }
860
861 EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPHER_CTX_FLAG_WRAP_ALLOW);
862 if (!EVP_EncryptInit_ex(ctx, cipher, NULL, kekri->key, NULL)
863 || !EVP_EncryptUpdate(ctx, wkey, &wkeylen, ec->key, ec->keylen)
864 || !EVP_EncryptFinal_ex(ctx, wkey + wkeylen, &outlen)) {
865 ERR_raise(ERR_LIB_CMS, CMS_R_WRAP_ERROR);
866 goto err;
867 }
868 wkeylen += outlen;
869 if (!ossl_assert((size_t)wkeylen == ec->keylen + 8)) {
870 ERR_raise(ERR_LIB_CMS, CMS_R_WRAP_ERROR);
871 goto err;
872 }
873
874 ASN1_STRING_set0(kekri->encryptedKey, wkey, wkeylen);
875
876 r = 1;
877
878 err:
879 EVP_CIPHER_free(cipher);
880 if (!r)
881 OPENSSL_free(wkey);
882 EVP_CIPHER_CTX_free(ctx);
883
884 return r;
885}
886
887/* Decrypt content key in KEK recipient info */
888
889static int cms_RecipientInfo_kekri_decrypt(CMS_ContentInfo *cms,
890 CMS_RecipientInfo *ri)
891{
892 CMS_EncryptedContentInfo *ec;
893 CMS_KEKRecipientInfo *kekri;
894 unsigned char *ukey = NULL;
895 int ukeylen;
896 int r = 0, wrap_nid;
897 EVP_CIPHER *cipher = NULL;
898 int outlen = 0;
899 EVP_CIPHER_CTX *ctx = NULL;
900 const CMS_CTX *cms_ctx = ossl_cms_get0_cmsctx(cms);
901
902 ec = ossl_cms_get0_env_enc_content(cms);
903 if (ec == NULL)
904 return 0;
905
906 kekri = ri->d.kekri;
907
908 if (!kekri->key) {
909 ERR_raise(ERR_LIB_CMS, CMS_R_NO_KEY);
910 return 0;
911 }
912
913 wrap_nid = OBJ_obj2nid(kekri->keyEncryptionAlgorithm->algorithm);
914 if (aes_wrap_keylen(wrap_nid) != kekri->keylen) {
915 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH);
916 return 0;
917 }
918
919 /* If encrypted key length is invalid don't bother */
920
921 if (kekri->encryptedKey->length < 16) {
922 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_ENCRYPTED_KEY_LENGTH);
923 goto err;
924 }
925
926 cipher = cms_get_key_wrap_cipher(kekri->keylen, cms_ctx);
927 if (cipher == NULL) {
928 ERR_raise(ERR_LIB_CMS, CMS_R_INVALID_KEY_LENGTH);
929 goto err;
930 }
931
932 ukey = OPENSSL_malloc(kekri->encryptedKey->length - 8);
933 if (ukey == NULL) {
934 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
935 goto err;
936 }
937
938 ctx = EVP_CIPHER_CTX_new();
939 if (ctx == NULL) {
940 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
941 goto err;
942 }
943
944 if (!EVP_DecryptInit_ex(ctx, cipher, NULL, kekri->key, NULL)
945 || !EVP_DecryptUpdate(ctx, ukey, &ukeylen,
946 kekri->encryptedKey->data,
947 kekri->encryptedKey->length)
948 || !EVP_DecryptFinal_ex(ctx, ukey + ukeylen, &outlen)) {
949 ERR_raise(ERR_LIB_CMS, CMS_R_UNWRAP_ERROR);
950 goto err;
951 }
952 ukeylen += outlen;
953
954 OPENSSL_clear_free(ec->key, ec->keylen);
955 ec->key = ukey;
956 ec->keylen = ukeylen;
957
958 r = 1;
959
960 err:
961 EVP_CIPHER_free(cipher);
962 if (!r)
963 OPENSSL_free(ukey);
964 EVP_CIPHER_CTX_free(ctx);
965
966 return r;
967}
968
969int CMS_RecipientInfo_decrypt(CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
970{
971 switch (ri->type) {
972 case CMS_RECIPINFO_TRANS:
973 return cms_RecipientInfo_ktri_decrypt(cms, ri);
974
975 case CMS_RECIPINFO_KEK:
976 return cms_RecipientInfo_kekri_decrypt(cms, ri);
977
978 case CMS_RECIPINFO_PASS:
979 return ossl_cms_RecipientInfo_pwri_crypt(cms, ri, 0);
980
981 default:
982 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_RECIPIENTINFO_TYPE);
983 return 0;
984 }
985}
986
987int CMS_RecipientInfo_encrypt(const CMS_ContentInfo *cms, CMS_RecipientInfo *ri)
988{
989 switch (ri->type) {
990 case CMS_RECIPINFO_TRANS:
991 return cms_RecipientInfo_ktri_encrypt(cms, ri);
992
993 case CMS_RECIPINFO_AGREE:
994 return ossl_cms_RecipientInfo_kari_encrypt(cms, ri);
995
996 case CMS_RECIPINFO_KEK:
997 return cms_RecipientInfo_kekri_encrypt(cms, ri);
998
999 case CMS_RECIPINFO_PASS:
1000 return ossl_cms_RecipientInfo_pwri_crypt(cms, ri, 1);
1001
1002 default:
1003 ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_RECIPIENT_TYPE);
1004 return 0;
1005 }
1006}
1007
1008/* Check structures and fixup version numbers (if necessary) */
1009
1010static void cms_env_set_originfo_version(CMS_EnvelopedData *env)
1011{
1012 CMS_OriginatorInfo *org = env->originatorInfo;
1013 int i;
1014 if (org == NULL)
1015 return;
1016 for (i = 0; i < sk_CMS_CertificateChoices_num(org->certificates); i++) {
1017 CMS_CertificateChoices *cch;
1018 cch = sk_CMS_CertificateChoices_value(org->certificates, i);
1019 if (cch->type == CMS_CERTCHOICE_OTHER) {
1020 env->version = 4;
1021 return;
1022 } else if (cch->type == CMS_CERTCHOICE_V2ACERT) {
1023 if (env->version < 3)
1024 env->version = 3;
1025 }
1026 }
1027
1028 for (i = 0; i < sk_CMS_RevocationInfoChoice_num(org->crls); i++) {
1029 CMS_RevocationInfoChoice *rch;
1030 rch = sk_CMS_RevocationInfoChoice_value(org->crls, i);
1031 if (rch->type == CMS_REVCHOICE_OTHER) {
1032 env->version = 4;
1033 return;
1034 }
1035 }
1036}
1037
1038static void cms_env_set_version(CMS_EnvelopedData *env)
1039{
1040 int i;
1041 CMS_RecipientInfo *ri;
1042
1043 /*
1044 * Can't set version higher than 4 so if 4 or more already nothing to do.
1045 */
1046 if (env->version >= 4)
1047 return;
1048
1049 cms_env_set_originfo_version(env);
1050
1051 if (env->version >= 3)
1052 return;
1053
1054 for (i = 0; i < sk_CMS_RecipientInfo_num(env->recipientInfos); i++) {
1055 ri = sk_CMS_RecipientInfo_value(env->recipientInfos, i);
1056 if (ri->type == CMS_RECIPINFO_PASS || ri->type == CMS_RECIPINFO_OTHER) {
1057 env->version = 3;
1058 return;
1059 } else if (ri->type != CMS_RECIPINFO_TRANS
1060 || ri->d.ktri->version != 0) {
1061 env->version = 2;
1062 }
1063 }
1064 if (env->originatorInfo || env->unprotectedAttrs)
1065 env->version = 2;
1066 if (env->version == 2)
1067 return;
1068 env->version = 0;
1069}
1070
1071static int cms_env_encrypt_content_key(const CMS_ContentInfo *cms,
1072 STACK_OF(CMS_RecipientInfo) *ris)
1073{
1074 int i;
1075 CMS_RecipientInfo *ri;
1076
1077 for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
1078 ri = sk_CMS_RecipientInfo_value(ris, i);
1079 if (CMS_RecipientInfo_encrypt(cms, ri) <= 0)
1080 return -1;
1081 }
1082 return 1;
1083}
1084
1085static void cms_env_clear_ec(CMS_EncryptedContentInfo *ec)
1086{
1087 ec->cipher = NULL;
1088 OPENSSL_clear_free(ec->key, ec->keylen);
1089 ec->key = NULL;
1090 ec->keylen = 0;
1091}
1092
1093static BIO *cms_EnvelopedData_Decryption_init_bio(CMS_ContentInfo *cms)
1094{
1095 CMS_EncryptedContentInfo *ec = cms->d.envelopedData->encryptedContentInfo;
1096 BIO *contentBio = ossl_cms_EncryptedContent_init_bio(ec,
1097 ossl_cms_get0_cmsctx(cms));
1098 EVP_CIPHER_CTX *ctx = NULL;
1099
1100 if (contentBio == NULL)
1101 return NULL;
1102
1103 BIO_get_cipher_ctx(contentBio, &ctx);
1104 if (ctx == NULL) {
1105 BIO_free(contentBio);
1106 return NULL;
1107 }
1108 /*
1109 * If the selected cipher supports unprotected attributes,
1110 * deal with it using special ctrl function
1111 */
1112 if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ctx))
1113 & EVP_CIPH_FLAG_CIPHER_WITH_MAC) != 0
1114 && EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_PROCESS_UNPROTECTED, 0,
1115 cms->d.envelopedData->unprotectedAttrs) <= 0) {
1116 BIO_free(contentBio);
1117 return NULL;
1118 }
1119 return contentBio;
1120}
1121
1122static BIO *cms_EnvelopedData_Encryption_init_bio(CMS_ContentInfo *cms)
1123{
1124 CMS_EncryptedContentInfo *ec;
1125 STACK_OF(CMS_RecipientInfo) *rinfos;
1126 int ok = 0;
1127 BIO *ret;
1128 CMS_EnvelopedData *env = cms->d.envelopedData;
1129
1130 /* Get BIO first to set up key */
1131
1132 ec = env->encryptedContentInfo;
1133 ret = ossl_cms_EncryptedContent_init_bio(ec, ossl_cms_get0_cmsctx(cms));
1134
1135 /* If error end of processing */
1136 if (!ret)
1137 return ret;
1138
1139 /* Now encrypt content key according to each RecipientInfo type */
1140 rinfos = env->recipientInfos;
1141 if (cms_env_encrypt_content_key(cms, rinfos) < 0) {
1142 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_SETTING_RECIPIENTINFO);
1143 goto err;
1144 }
1145
1146 /* And finally set the version */
1147 cms_env_set_version(env);
1148
1149 ok = 1;
1150
1151 err:
1152 cms_env_clear_ec(ec);
1153 if (ok)
1154 return ret;
1155 BIO_free(ret);
1156 return NULL;
1157}
1158
1159BIO *ossl_cms_EnvelopedData_init_bio(CMS_ContentInfo *cms)
1160{
1161 if (cms->d.envelopedData->encryptedContentInfo->cipher != NULL) {
1162 /* If cipher is set it's encryption */
1163 return cms_EnvelopedData_Encryption_init_bio(cms);
1164 }
1165
1166 /* If cipher is not set it's decryption */
1167 return cms_EnvelopedData_Decryption_init_bio(cms);
1168}
1169
1170BIO *ossl_cms_AuthEnvelopedData_init_bio(CMS_ContentInfo *cms)
1171{
1172 CMS_EncryptedContentInfo *ec;
1173 STACK_OF(CMS_RecipientInfo) *rinfos;
1174 int ok = 0;
1175 BIO *ret;
1176 CMS_AuthEnvelopedData *aenv = cms->d.authEnvelopedData;
1177
1178 /* Get BIO first to set up key */
1179 ec = aenv->authEncryptedContentInfo;
1180 /* Set tag for decryption */
1181 if (ec->cipher == NULL) {
1182 ec->tag = aenv->mac->data;
1183 ec->taglen = aenv->mac->length;
1184 }
1185 ret = ossl_cms_EncryptedContent_init_bio(ec, ossl_cms_get0_cmsctx(cms));
1186
1187 /* If error or no cipher end of processing */
1188 if (ret == NULL || ec->cipher == NULL)
1189 return ret;
1190
1191 /* Now encrypt content key according to each RecipientInfo type */
1192 rinfos = aenv->recipientInfos;
1193 if (cms_env_encrypt_content_key(cms, rinfos) < 0) {
1194 ERR_raise(ERR_LIB_CMS, CMS_R_ERROR_SETTING_RECIPIENTINFO);
1195 goto err;
1196 }
1197
1198 /* And finally set the version */
1199 aenv->version = 0;
1200
1201 ok = 1;
1202
1203 err:
1204 cms_env_clear_ec(ec);
1205 if (ok)
1206 return ret;
1207 BIO_free(ret);
1208 return NULL;
1209}
1210
1211int ossl_cms_EnvelopedData_final(CMS_ContentInfo *cms, BIO *chain)
1212{
1213 CMS_EnvelopedData *env = NULL;
1214 EVP_CIPHER_CTX *ctx = NULL;
1215 BIO *mbio = BIO_find_type(chain, BIO_TYPE_CIPHER);
1216
1217 env = ossl_cms_get0_enveloped(cms);
1218 if (env == NULL)
1219 return 0;
1220
1221 if (mbio == NULL) {
1222 ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_NOT_FOUND);
1223 return 0;
1224 }
1225
1226 BIO_get_cipher_ctx(mbio, &ctx);
1227
1228 /*
1229 * If the selected cipher supports unprotected attributes,
1230 * deal with it using special ctrl function
1231 */
1232 if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ctx))
1233 & EVP_CIPH_FLAG_CIPHER_WITH_MAC) != 0) {
1234 if (env->unprotectedAttrs == NULL)
1235 env->unprotectedAttrs = sk_X509_ATTRIBUTE_new_null();
1236
1237 if (env->unprotectedAttrs == NULL) {
1238 ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
1239 return 0;
1240 }
1241
1242 if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_PROCESS_UNPROTECTED,
1243 1, env->unprotectedAttrs) <= 0) {
1244 ERR_raise(ERR_LIB_CMS, CMS_R_CTRL_FAILURE);
1245 return 0;
1246 }
1247 }
1248
1249 cms_env_set_version(cms->d.envelopedData);
1250 return 1;
1251}
1252
1253int ossl_cms_AuthEnvelopedData_final(CMS_ContentInfo *cms, BIO *cmsbio)
1254{
1255 EVP_CIPHER_CTX *ctx;
1256 unsigned char *tag = NULL;
1257 int taglen, ok = 0;
1258
1259 BIO_get_cipher_ctx(cmsbio, &ctx);
1260
1261 /*
1262 * The tag is set only for encryption. There is nothing to do for
1263 * decryption.
1264 */
1265 if (!EVP_CIPHER_CTX_is_encrypting(ctx))
1266 return 1;
1267
1268 taglen = EVP_CIPHER_CTX_get_tag_length(ctx);
1269 if (taglen <= 0
1270 || (tag = OPENSSL_malloc(taglen)) == NULL
1271 || EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, taglen,
1272 tag) <= 0) {
1273 ERR_raise(ERR_LIB_CMS, CMS_R_CIPHER_GET_TAG);
1274 goto err;
1275 }
1276
1277 if (!ASN1_OCTET_STRING_set(cms->d.authEnvelopedData->mac, tag, taglen))
1278 goto err;
1279
1280 ok = 1;
1281err:
1282 OPENSSL_free(tag);
1283 return ok;
1284}
1285
1286/*
1287 * Get RecipientInfo type (if any) supported by a key (public or private). To
1288 * retain compatibility with previous behaviour if the ctrl value isn't
1289 * supported we assume key transport.
1290 */
1291int ossl_cms_pkey_get_ri_type(EVP_PKEY *pk)
1292{
1293 /* Check types that we know about */
1294 if (EVP_PKEY_is_a(pk, "DH"))
1295 return CMS_RECIPINFO_AGREE;
1296 else if (EVP_PKEY_is_a(pk, "DHX"))
1297 return CMS_RECIPINFO_AGREE;
1298 else if (EVP_PKEY_is_a(pk, "DSA"))
1299 return CMS_RECIPINFO_NONE;
1300 else if (EVP_PKEY_is_a(pk, "EC"))
1301 return CMS_RECIPINFO_AGREE;
1302 else if (EVP_PKEY_is_a(pk, "RSA"))
1303 return CMS_RECIPINFO_TRANS;
1304
1305 /*
1306 * Otherwise this might ben an engine implementation, so see if we can get
1307 * the type from the ameth.
1308 */
1309 if (pk->ameth && pk->ameth->pkey_ctrl) {
1310 int i, r;
1311 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_RI_TYPE, 0, &r);
1312 if (i > 0)
1313 return r;
1314 }
1315 return CMS_RECIPINFO_TRANS;
1316}
1317
1318int ossl_cms_pkey_is_ri_type_supported(EVP_PKEY *pk, int ri_type)
1319{
1320 int supportedRiType;
1321
1322 if (pk->ameth != NULL && pk->ameth->pkey_ctrl != NULL) {
1323 int i, r;
1324
1325 i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_IS_RI_TYPE_SUPPORTED,
1326 ri_type, &r);
1327 if (i > 0)
1328 return r;
1329 }
1330
1331 supportedRiType = ossl_cms_pkey_get_ri_type(pk);
1332 if (supportedRiType < 0)
1333 return 0;
1334
1335 return (supportedRiType == ri_type);
1336}
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