2 * Copyright 2006-2016 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
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1t.h>
13 #include <openssl/x509.h>
14 #include <openssl/bn.h>
15 #include <openssl/cms.h>
16 #include "internal/asn1_int.h"
17 #include "internal/evp_int.h"
20 #ifndef OPENSSL_NO_CMS
21 static int rsa_cms_sign(CMS_SignerInfo *si);
22 static int rsa_cms_verify(CMS_SignerInfo *si);
23 static int rsa_cms_decrypt(CMS_RecipientInfo *ri);
24 static int rsa_cms_encrypt(CMS_RecipientInfo *ri);
27 /* Set any parameters associated with pkey */
28 static int rsa_param_encode(const EVP_PKEY *pkey,
29 ASN1_STRING **pstr, int *pstrtype)
31 const RSA *rsa = pkey->pkey.rsa;
33 /* If RSA it's just NULL type */
34 if (pkey->ameth->pkey_id == EVP_PKEY_RSA) {
35 *pstrtype = V_ASN1_NULL;
38 /* If no PSS parameters we omit parameters entirely */
39 if (rsa->pss == NULL) {
40 *pstrtype = V_ASN1_UNDEF;
43 /* Encode PSS parameters */
44 if (!ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr)) {
45 ASN1_STRING_free(*pstr);
50 *pstrtype = V_ASN1_SEQUENCE;
53 /* Decode any parameters and set them in RSA structure */
54 static int rsa_param_decode(RSA *rsa, const X509_ALGOR *alg)
56 const ASN1_OBJECT *algoid;
60 X509_ALGOR_get0(&algoid, &algptype, &algp, alg);
61 if (OBJ_obj2nid(algoid) == EVP_PKEY_RSA)
63 if (algptype == V_ASN1_UNDEF)
65 if (algptype != V_ASN1_SEQUENCE)
67 rsa->pss = ASN1_item_unpack(algp, ASN1_ITEM_rptr(RSA_PSS_PARAMS));
73 static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
75 unsigned char *penc = NULL;
79 if (!rsa_param_encode(pkey, &str, &strtype))
81 penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
84 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id),
85 strtype, str, penc, penclen))
92 static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
94 const unsigned char *p;
99 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &alg, pubkey))
101 if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL) {
102 RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
105 if (!rsa_param_decode(rsa, alg)) {
109 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
113 static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
115 if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0
116 || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0)
121 static int old_rsa_priv_decode(EVP_PKEY *pkey,
122 const unsigned char **pder, int derlen)
126 if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL) {
127 RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
130 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
134 static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
136 return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
139 static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
141 unsigned char *rk = NULL;
145 if (!rsa_param_encode(pkey, &str, &strtype))
147 rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
150 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
154 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0,
155 strtype, str, rk, rklen)) {
156 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
163 static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
165 const unsigned char *p;
168 const X509_ALGOR *alg;
170 if (!PKCS8_pkey_get0(NULL, &p, &pklen, &alg, p8))
172 rsa = d2i_RSAPrivateKey(NULL, &p, pklen);
174 RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
177 if (!rsa_param_decode(rsa, alg)) {
181 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
185 static int int_rsa_size(const EVP_PKEY *pkey)
187 return RSA_size(pkey->pkey.rsa);
190 static int rsa_bits(const EVP_PKEY *pkey)
192 return BN_num_bits(pkey->pkey.rsa->n);
195 static int rsa_security_bits(const EVP_PKEY *pkey)
197 return RSA_security_bits(pkey->pkey.rsa);
200 static void int_rsa_free(EVP_PKEY *pkey)
202 RSA_free(pkey->pkey.rsa);
205 static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
209 int ret = 0, mod_len = 0;
212 mod_len = BN_num_bits(x->n);
214 if (!BIO_indent(bp, off, 128))
218 if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len) <= 0)
221 s = "publicExponent:";
223 if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0)
228 if (!ASN1_bn_print(bp, str, x->n, NULL, off))
230 if (!ASN1_bn_print(bp, s, x->e, NULL, off))
233 if (!ASN1_bn_print(bp, "privateExponent:", x->d, NULL, off))
235 if (!ASN1_bn_print(bp, "prime1:", x->p, NULL, off))
237 if (!ASN1_bn_print(bp, "prime2:", x->q, NULL, off))
239 if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, NULL, off))
241 if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, NULL, off))
243 if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, NULL, off))
251 static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
254 return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
257 static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
260 return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
263 static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg)
265 if (OBJ_obj2nid(alg->algorithm) != NID_mgf1)
267 return ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(X509_ALGOR),
271 static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg)
275 pss = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_PSS_PARAMS),
281 if (pss->maskGenAlgorithm != NULL) {
282 pss->maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
283 if (pss->maskHash == NULL) {
284 RSA_PSS_PARAMS_free(pss);
292 static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, int indent)
296 if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
300 if (BIO_puts(bp, "\n") <= 0)
302 if (!BIO_indent(bp, indent, 128))
304 if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
307 if (pss->hashAlgorithm) {
308 if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
310 } else if (BIO_puts(bp, "sha1 (default)") <= 0)
313 if (BIO_puts(bp, "\n") <= 0)
316 if (!BIO_indent(bp, indent, 128))
319 if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
321 if (pss->maskGenAlgorithm) {
322 if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
324 if (BIO_puts(bp, " with ") <= 0)
327 if (i2a_ASN1_OBJECT(bp, pss->maskHash->algorithm) <= 0)
329 } else if (BIO_puts(bp, "INVALID") <= 0)
331 } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
335 if (!BIO_indent(bp, indent, 128))
337 if (BIO_puts(bp, "Salt Length: 0x") <= 0)
339 if (pss->saltLength) {
340 if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
342 } else if (BIO_puts(bp, "14 (default)") <= 0)
346 if (!BIO_indent(bp, indent, 128))
348 if (BIO_puts(bp, "Trailer Field: 0x") <= 0)
350 if (pss->trailerField) {
351 if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
353 } else if (BIO_puts(bp, "BC (default)") <= 0)
364 static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
365 const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
367 if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) {
370 pss = rsa_pss_decode(sigalg);
371 rv = rsa_pss_param_print(bp, pss, indent);
372 RSA_PSS_PARAMS_free(pss);
375 } else if (!sig && BIO_puts(bp, "\n") <= 0)
378 return X509_signature_dump(bp, sig, indent);
382 static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
384 X509_ALGOR *alg = NULL;
387 case ASN1_PKEY_CTRL_PKCS7_SIGN:
389 PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
392 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
394 PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
396 #ifndef OPENSSL_NO_CMS
397 case ASN1_PKEY_CTRL_CMS_SIGN:
399 return rsa_cms_sign(arg2);
401 return rsa_cms_verify(arg2);
404 case ASN1_PKEY_CTRL_CMS_ENVELOPE:
406 return rsa_cms_encrypt(arg2);
408 return rsa_cms_decrypt(arg2);
411 case ASN1_PKEY_CTRL_CMS_RI_TYPE:
412 *(int *)arg2 = CMS_RECIPINFO_TRANS;
416 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
417 *(int *)arg2 = NID_sha256;
426 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
432 /* allocate and set algorithm ID from EVP_MD, default SHA1 */
433 static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md)
435 if (md == NULL || EVP_MD_type(md) == NID_sha1)
437 *palg = X509_ALGOR_new();
440 X509_ALGOR_set_md(*palg, md);
444 /* Allocate and set MGF1 algorithm ID from EVP_MD */
445 static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md)
447 X509_ALGOR *algtmp = NULL;
448 ASN1_STRING *stmp = NULL;
450 if (mgf1md == NULL || EVP_MD_type(mgf1md) == NID_sha1)
452 /* need to embed algorithm ID inside another */
453 if (!rsa_md_to_algor(&algtmp, mgf1md))
455 if (!ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp))
457 *palg = X509_ALGOR_new();
460 X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
463 ASN1_STRING_free(stmp);
464 X509_ALGOR_free(algtmp);
470 /* convert algorithm ID to EVP_MD, default SHA1 */
471 static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg)
476 md = EVP_get_digestbyobj(alg->algorithm);
478 RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_R_UNKNOWN_DIGEST);
483 * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter,
484 * suitable for setting an AlgorithmIdentifier.
487 static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
489 const EVP_MD *sigmd, *mgf1md;
490 EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
492 if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0)
494 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
496 if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
499 saltlen = EVP_MD_size(sigmd);
500 else if (saltlen == -2) {
501 saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
502 if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0)
506 return rsa_pss_params_create(sigmd, mgf1md, saltlen);
509 RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd,
510 const EVP_MD *mgf1md, int saltlen)
512 RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
516 pss->saltLength = ASN1_INTEGER_new();
517 if (pss->saltLength == NULL)
519 if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
522 if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd))
526 if (!rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md))
530 RSA_PSS_PARAMS_free(pss);
534 static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
536 RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx);
537 ASN1_STRING *os = NULL;
541 if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os)) {
542 ASN1_STRING_free(os);
545 RSA_PSS_PARAMS_free(pss);
550 * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL
551 * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are
552 * passed to pkctx instead.
555 static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
556 X509_ALGOR *sigalg, EVP_PKEY *pkey)
560 const EVP_MD *mgf1md = NULL, *md = NULL;
562 /* Sanity check: make sure it is PSS */
563 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
564 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
567 /* Decode PSS parameters */
568 pss = rsa_pss_decode(sigalg);
571 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS);
574 mgf1md = rsa_algor_to_md(pss->maskHash);
577 md = rsa_algor_to_md(pss->hashAlgorithm);
581 if (pss->saltLength) {
582 saltlen = ASN1_INTEGER_get(pss->saltLength);
585 * Could perform more salt length sanity checks but the main RSA
586 * routines will trap other invalid values anyway.
589 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_SALT_LENGTH);
596 * low-level routines support only trailer field 0xbc (value 1) and
597 * PKCS#1 says we should reject any other value anyway.
599 if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) {
600 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_TRAILER);
604 /* We have all parameters now set up context */
607 if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
610 const EVP_MD *checkmd;
611 if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0)
613 if (EVP_MD_type(md) != EVP_MD_type(checkmd)) {
614 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH);
619 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
622 if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
625 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
631 RSA_PSS_PARAMS_free(pss);
635 #ifndef OPENSSL_NO_CMS
636 static int rsa_cms_verify(CMS_SignerInfo *si)
640 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
641 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
642 nid = OBJ_obj2nid(alg->algorithm);
643 if (nid == NID_rsaEncryption)
645 if (nid == EVP_PKEY_RSA_PSS)
646 return rsa_pss_to_ctx(NULL, pkctx, alg, NULL);
647 /* Workaround for some implementation that use a signature OID */
648 if (OBJ_find_sigid_algs(nid, NULL, &nid2)) {
649 if (nid2 == NID_rsaEncryption)
657 * Customised RSA item verification routine. This is called when a signature
658 * is encountered requiring special handling. We currently only handle PSS.
661 static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
662 X509_ALGOR *sigalg, ASN1_BIT_STRING *sig,
665 /* Sanity check: make sure it is PSS */
666 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
667 RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
670 if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
677 #ifndef OPENSSL_NO_CMS
678 static int rsa_cms_sign(CMS_SignerInfo *si)
680 int pad_mode = RSA_PKCS1_PADDING;
682 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
683 ASN1_STRING *os = NULL;
684 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
686 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
689 if (pad_mode == RSA_PKCS1_PADDING) {
690 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
693 /* We don't support it */
694 if (pad_mode != RSA_PKCS1_PSS_PADDING)
696 os = rsa_ctx_to_pss_string(pkctx);
699 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os);
704 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
705 X509_ALGOR *alg1, X509_ALGOR *alg2,
706 ASN1_BIT_STRING *sig)
709 EVP_PKEY_CTX *pkctx = EVP_MD_CTX_pkey_ctx(ctx);
710 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
712 if (pad_mode == RSA_PKCS1_PADDING)
714 if (pad_mode == RSA_PKCS1_PSS_PADDING) {
715 ASN1_STRING *os1 = NULL;
716 os1 = rsa_ctx_to_pss_string(pkctx);
719 /* Duplicate parameters if we have to */
721 ASN1_STRING *os2 = ASN1_STRING_dup(os1);
723 ASN1_STRING_free(os1);
726 X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
727 V_ASN1_SEQUENCE, os2);
729 X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
730 V_ASN1_SEQUENCE, os1);
736 #ifndef OPENSSL_NO_CMS
737 static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg)
739 RSA_OAEP_PARAMS *oaep;
741 oaep = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_OAEP_PARAMS),
747 if (oaep->maskGenFunc != NULL) {
748 oaep->maskHash = rsa_mgf1_decode(oaep->maskGenFunc);
749 if (oaep->maskHash == NULL) {
750 RSA_OAEP_PARAMS_free(oaep);
757 static int rsa_cms_decrypt(CMS_RecipientInfo *ri)
763 unsigned char *label = NULL;
765 const EVP_MD *mgf1md = NULL, *md = NULL;
766 RSA_OAEP_PARAMS *oaep;
767 pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
770 if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg))
772 nid = OBJ_obj2nid(cmsalg->algorithm);
773 if (nid == NID_rsaEncryption)
775 if (nid != NID_rsaesOaep) {
776 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE);
779 /* Decode OAEP parameters */
780 oaep = rsa_oaep_decode(cmsalg);
783 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS);
787 mgf1md = rsa_algor_to_md(oaep->maskHash);
790 md = rsa_algor_to_md(oaep->hashFunc);
794 if (oaep->pSourceFunc) {
795 X509_ALGOR *plab = oaep->pSourceFunc;
796 if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) {
797 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE);
800 if (plab->parameter->type != V_ASN1_OCTET_STRING) {
801 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL);
805 label = plab->parameter->value.octet_string->data;
806 /* Stop label being freed when OAEP parameters are freed */
807 plab->parameter->value.octet_string->data = NULL;
808 labellen = plab->parameter->value.octet_string->length;
811 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0)
813 if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0)
815 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
817 if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0)
823 RSA_OAEP_PARAMS_free(oaep);
827 static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
829 const EVP_MD *md, *mgf1md;
830 RSA_OAEP_PARAMS *oaep = NULL;
831 ASN1_STRING *os = NULL;
833 EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
834 int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen;
835 unsigned char *label;
836 CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg);
838 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
841 if (pad_mode == RSA_PKCS1_PADDING) {
842 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
846 if (pad_mode != RSA_PKCS1_OAEP_PADDING)
848 if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0)
850 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
852 labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label);
855 oaep = RSA_OAEP_PARAMS_new();
858 if (!rsa_md_to_algor(&oaep->hashFunc, md))
860 if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md))
863 ASN1_OCTET_STRING *los;
864 oaep->pSourceFunc = X509_ALGOR_new();
865 if (oaep->pSourceFunc == NULL)
867 los = ASN1_OCTET_STRING_new();
870 if (!ASN1_OCTET_STRING_set(los, label, labellen)) {
871 ASN1_OCTET_STRING_free(los);
874 X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified),
875 V_ASN1_OCTET_STRING, los);
877 /* create string with pss parameter encoding. */
878 if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os))
880 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os);
884 RSA_OAEP_PARAMS_free(oaep);
885 ASN1_STRING_free(os);
890 const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2] = {
894 ASN1_PKEY_SIGPARAM_NULL,
897 "OpenSSL RSA method",
928 const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth = {
931 ASN1_PKEY_SIGPARAM_NULL,
934 "OpenSSL RSA-PSS method",