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 static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
29 unsigned char *penc = NULL;
31 penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
34 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
35 V_ASN1_NULL, NULL, penc, penclen))
42 static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
44 const unsigned char *p;
48 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
50 if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL) {
51 RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
54 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
58 static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
60 if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0
61 || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0)
66 static int old_rsa_priv_decode(EVP_PKEY *pkey,
67 const unsigned char **pder, int derlen)
71 if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL) {
72 RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
75 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
79 static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
81 return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
84 static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
86 unsigned char *rk = NULL;
88 rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
91 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
95 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0,
96 V_ASN1_NULL, NULL, rk, rklen)) {
97 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
104 static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
106 const unsigned char *p;
108 if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
110 return old_rsa_priv_decode(pkey, &p, pklen);
113 static int int_rsa_size(const EVP_PKEY *pkey)
115 return RSA_size(pkey->pkey.rsa);
118 static int rsa_bits(const EVP_PKEY *pkey)
120 return BN_num_bits(pkey->pkey.rsa->n);
123 static int rsa_security_bits(const EVP_PKEY *pkey)
125 return RSA_security_bits(pkey->pkey.rsa);
128 static void int_rsa_free(EVP_PKEY *pkey)
130 RSA_free(pkey->pkey.rsa);
133 static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
137 int ret = 0, mod_len = 0;
140 mod_len = BN_num_bits(x->n);
142 if (!BIO_indent(bp, off, 128))
146 if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len) <= 0)
149 s = "publicExponent:";
151 if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0)
156 if (!ASN1_bn_print(bp, str, x->n, NULL, off))
158 if (!ASN1_bn_print(bp, s, x->e, NULL, off))
161 if (!ASN1_bn_print(bp, "privateExponent:", x->d, NULL, off))
163 if (!ASN1_bn_print(bp, "prime1:", x->p, NULL, off))
165 if (!ASN1_bn_print(bp, "prime2:", x->q, NULL, off))
167 if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, NULL, off))
169 if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, NULL, off))
171 if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, NULL, off))
179 static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
182 return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
185 static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
188 return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
191 static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg)
193 if (OBJ_obj2nid(alg->algorithm) != NID_mgf1)
195 return ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(X509_ALGOR),
199 static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg)
203 pss = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_PSS_PARAMS),
209 if (pss->maskGenAlgorithm != NULL) {
210 pss->maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
211 if (pss->maskHash == NULL) {
212 RSA_PSS_PARAMS_free(pss);
220 static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, int indent)
224 if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
228 if (BIO_puts(bp, "\n") <= 0)
230 if (!BIO_indent(bp, indent, 128))
232 if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
235 if (pss->hashAlgorithm) {
236 if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
238 } else if (BIO_puts(bp, "sha1 (default)") <= 0)
241 if (BIO_puts(bp, "\n") <= 0)
244 if (!BIO_indent(bp, indent, 128))
247 if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
249 if (pss->maskGenAlgorithm) {
250 if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
252 if (BIO_puts(bp, " with ") <= 0)
255 if (i2a_ASN1_OBJECT(bp, pss->maskHash->algorithm) <= 0)
257 } else if (BIO_puts(bp, "INVALID") <= 0)
259 } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
263 if (!BIO_indent(bp, indent, 128))
265 if (BIO_puts(bp, "Salt Length: 0x") <= 0)
267 if (pss->saltLength) {
268 if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
270 } else if (BIO_puts(bp, "14 (default)") <= 0)
274 if (!BIO_indent(bp, indent, 128))
276 if (BIO_puts(bp, "Trailer Field: 0x") <= 0)
278 if (pss->trailerField) {
279 if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
281 } else if (BIO_puts(bp, "BC (default)") <= 0)
292 static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
293 const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
295 if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) {
298 pss = rsa_pss_decode(sigalg);
299 rv = rsa_pss_param_print(bp, pss, indent);
300 RSA_PSS_PARAMS_free(pss);
303 } else if (!sig && BIO_puts(bp, "\n") <= 0)
306 return X509_signature_dump(bp, sig, indent);
310 static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
312 X509_ALGOR *alg = NULL;
315 case ASN1_PKEY_CTRL_PKCS7_SIGN:
317 PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
320 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
322 PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
324 #ifndef OPENSSL_NO_CMS
325 case ASN1_PKEY_CTRL_CMS_SIGN:
327 return rsa_cms_sign(arg2);
329 return rsa_cms_verify(arg2);
332 case ASN1_PKEY_CTRL_CMS_ENVELOPE:
334 return rsa_cms_encrypt(arg2);
336 return rsa_cms_decrypt(arg2);
339 case ASN1_PKEY_CTRL_CMS_RI_TYPE:
340 *(int *)arg2 = CMS_RECIPINFO_TRANS;
344 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
345 *(int *)arg2 = NID_sha256;
354 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
360 /* allocate and set algorithm ID from EVP_MD, default SHA1 */
361 static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md)
363 if (md == NULL || EVP_MD_type(md) == NID_sha1)
365 *palg = X509_ALGOR_new();
368 X509_ALGOR_set_md(*palg, md);
372 /* Allocate and set MGF1 algorithm ID from EVP_MD */
373 static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md)
375 X509_ALGOR *algtmp = NULL;
376 ASN1_STRING *stmp = NULL;
378 if (mgf1md == NULL || EVP_MD_type(mgf1md) == NID_sha1)
380 /* need to embed algorithm ID inside another */
381 if (!rsa_md_to_algor(&algtmp, mgf1md))
383 if (!ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp))
385 *palg = X509_ALGOR_new();
388 X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
391 ASN1_STRING_free(stmp);
392 X509_ALGOR_free(algtmp);
398 /* convert algorithm ID to EVP_MD, default SHA1 */
399 static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg)
404 md = EVP_get_digestbyobj(alg->algorithm);
406 RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_R_UNKNOWN_DIGEST);
411 * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter,
412 * suitable for setting an AlgorithmIdentifier.
415 static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
417 const EVP_MD *sigmd, *mgf1md;
418 EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
420 if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0)
422 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
424 if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
427 saltlen = EVP_MD_size(sigmd);
428 else if (saltlen == -2) {
429 saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
430 if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0)
434 return rsa_pss_params_create(sigmd, mgf1md, saltlen);
437 RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd,
438 const EVP_MD *mgf1md, int saltlen)
440 RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
444 pss->saltLength = ASN1_INTEGER_new();
445 if (pss->saltLength == NULL)
447 if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
450 if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd))
454 if (!rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md))
458 RSA_PSS_PARAMS_free(pss);
462 static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
464 RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx);
465 ASN1_STRING *os = NULL;
469 if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os)) {
470 ASN1_STRING_free(os);
473 RSA_PSS_PARAMS_free(pss);
478 * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL
479 * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are
480 * passed to pkctx instead.
483 static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
484 X509_ALGOR *sigalg, EVP_PKEY *pkey)
488 const EVP_MD *mgf1md = NULL, *md = NULL;
490 /* Sanity check: make sure it is PSS */
491 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
492 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
495 /* Decode PSS parameters */
496 pss = rsa_pss_decode(sigalg);
499 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS);
502 mgf1md = rsa_algor_to_md(pss->maskHash);
505 md = rsa_algor_to_md(pss->hashAlgorithm);
509 if (pss->saltLength) {
510 saltlen = ASN1_INTEGER_get(pss->saltLength);
513 * Could perform more salt length sanity checks but the main RSA
514 * routines will trap other invalid values anyway.
517 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_SALT_LENGTH);
524 * low-level routines support only trailer field 0xbc (value 1) and
525 * PKCS#1 says we should reject any other value anyway.
527 if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) {
528 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_TRAILER);
532 /* We have all parameters now set up context */
535 if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
538 const EVP_MD *checkmd;
539 if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0)
541 if (EVP_MD_type(md) != EVP_MD_type(checkmd)) {
542 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH);
547 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
550 if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
553 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
559 RSA_PSS_PARAMS_free(pss);
563 #ifndef OPENSSL_NO_CMS
564 static int rsa_cms_verify(CMS_SignerInfo *si)
568 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
569 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
570 nid = OBJ_obj2nid(alg->algorithm);
571 if (nid == NID_rsaEncryption)
573 if (nid == EVP_PKEY_RSA_PSS)
574 return rsa_pss_to_ctx(NULL, pkctx, alg, NULL);
575 /* Workaround for some implementation that use a signature OID */
576 if (OBJ_find_sigid_algs(nid, NULL, &nid2)) {
577 if (nid2 == NID_rsaEncryption)
585 * Customised RSA item verification routine. This is called when a signature
586 * is encountered requiring special handling. We currently only handle PSS.
589 static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
590 X509_ALGOR *sigalg, ASN1_BIT_STRING *sig,
593 /* Sanity check: make sure it is PSS */
594 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
595 RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
598 if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
605 #ifndef OPENSSL_NO_CMS
606 static int rsa_cms_sign(CMS_SignerInfo *si)
608 int pad_mode = RSA_PKCS1_PADDING;
610 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
611 ASN1_STRING *os = NULL;
612 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
614 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
617 if (pad_mode == RSA_PKCS1_PADDING) {
618 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
621 /* We don't support it */
622 if (pad_mode != RSA_PKCS1_PSS_PADDING)
624 os = rsa_ctx_to_pss_string(pkctx);
627 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os);
632 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
633 X509_ALGOR *alg1, X509_ALGOR *alg2,
634 ASN1_BIT_STRING *sig)
637 EVP_PKEY_CTX *pkctx = EVP_MD_CTX_pkey_ctx(ctx);
638 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
640 if (pad_mode == RSA_PKCS1_PADDING)
642 if (pad_mode == RSA_PKCS1_PSS_PADDING) {
643 ASN1_STRING *os1 = NULL;
644 os1 = rsa_ctx_to_pss_string(pkctx);
647 /* Duplicate parameters if we have to */
649 ASN1_STRING *os2 = ASN1_STRING_dup(os1);
651 ASN1_STRING_free(os1);
654 X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
655 V_ASN1_SEQUENCE, os2);
657 X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
658 V_ASN1_SEQUENCE, os1);
664 #ifndef OPENSSL_NO_CMS
665 static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg)
667 RSA_OAEP_PARAMS *oaep;
669 oaep = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_OAEP_PARAMS),
675 if (oaep->maskGenFunc != NULL) {
676 oaep->maskHash = rsa_mgf1_decode(oaep->maskGenFunc);
677 if (oaep->maskHash == NULL) {
678 RSA_OAEP_PARAMS_free(oaep);
685 static int rsa_cms_decrypt(CMS_RecipientInfo *ri)
691 unsigned char *label = NULL;
693 const EVP_MD *mgf1md = NULL, *md = NULL;
694 RSA_OAEP_PARAMS *oaep;
695 pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
698 if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg))
700 nid = OBJ_obj2nid(cmsalg->algorithm);
701 if (nid == NID_rsaEncryption)
703 if (nid != NID_rsaesOaep) {
704 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE);
707 /* Decode OAEP parameters */
708 oaep = rsa_oaep_decode(cmsalg);
711 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS);
715 mgf1md = rsa_algor_to_md(oaep->maskHash);
718 md = rsa_algor_to_md(oaep->hashFunc);
722 if (oaep->pSourceFunc) {
723 X509_ALGOR *plab = oaep->pSourceFunc;
724 if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) {
725 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE);
728 if (plab->parameter->type != V_ASN1_OCTET_STRING) {
729 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL);
733 label = plab->parameter->value.octet_string->data;
734 /* Stop label being freed when OAEP parameters are freed */
735 plab->parameter->value.octet_string->data = NULL;
736 labellen = plab->parameter->value.octet_string->length;
739 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0)
741 if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0)
743 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
745 if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0)
751 RSA_OAEP_PARAMS_free(oaep);
755 static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
757 const EVP_MD *md, *mgf1md;
758 RSA_OAEP_PARAMS *oaep = NULL;
759 ASN1_STRING *os = NULL;
761 EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
762 int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen;
763 unsigned char *label;
764 CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg);
766 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
769 if (pad_mode == RSA_PKCS1_PADDING) {
770 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
774 if (pad_mode != RSA_PKCS1_OAEP_PADDING)
776 if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0)
778 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
780 labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label);
783 oaep = RSA_OAEP_PARAMS_new();
786 if (!rsa_md_to_algor(&oaep->hashFunc, md))
788 if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md))
791 ASN1_OCTET_STRING *los;
792 oaep->pSourceFunc = X509_ALGOR_new();
793 if (oaep->pSourceFunc == NULL)
795 los = ASN1_OCTET_STRING_new();
798 if (!ASN1_OCTET_STRING_set(los, label, labellen)) {
799 ASN1_OCTET_STRING_free(los);
802 X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified),
803 V_ASN1_OCTET_STRING, los);
805 /* create string with pss parameter encoding. */
806 if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os))
808 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os);
812 RSA_OAEP_PARAMS_free(oaep);
813 ASN1_STRING_free(os);
818 const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2] = {
822 ASN1_PKEY_SIGPARAM_NULL,
825 "OpenSSL RSA method",
856 const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth = {
859 ASN1_PKEY_SIGPARAM_NULL,
862 "OpenSSL RSA-PSS method",