2 * Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
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
11 * RSA low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
17 #include "internal/cryptlib.h"
18 #include <openssl/asn1t.h>
19 #include <openssl/x509.h>
20 #include <openssl/bn.h>
21 #include <openssl/core_names.h>
22 #include <openssl/param_build.h>
23 #include "crypto/asn1.h"
24 #include "crypto/evp.h"
25 #include "crypto/rsa.h"
26 #include "rsa_local.h"
28 /* Set any parameters associated with pkey */
29 static int rsa_param_encode(const EVP_PKEY *pkey,
30 ASN1_STRING **pstr, int *pstrtype)
32 const RSA *rsa = pkey->pkey.rsa;
35 /* If RSA it's just NULL type */
36 if (RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK) != RSA_FLAG_TYPE_RSASSAPSS) {
37 *pstrtype = V_ASN1_NULL;
40 /* If no PSS parameters we omit parameters entirely */
41 if (rsa->pss == NULL) {
42 *pstrtype = V_ASN1_UNDEF;
45 /* Encode PSS parameters */
46 if (ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr) == NULL)
49 *pstrtype = V_ASN1_SEQUENCE;
52 /* Decode any parameters and set them in RSA structure */
53 static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
55 unsigned char *penc = NULL;
60 if (!rsa_param_encode(pkey, &str, &strtype))
62 penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
65 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id),
66 strtype, str, penc, penclen))
73 static int rsa_pub_decode(EVP_PKEY *pkey, const X509_PUBKEY *pubkey)
75 const unsigned char *p;
80 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &alg, pubkey))
82 if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL)
84 if (!ossl_rsa_param_decode(rsa, alg)) {
89 RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
90 switch (pkey->ameth->pkey_id) {
92 RSA_set_flags(rsa, RSA_FLAG_TYPE_RSA);
94 case EVP_PKEY_RSA_PSS:
95 RSA_set_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS);
98 /* Leave the type bits zero */
102 if (!EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa)) {
109 static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
112 * Don't check the public/private key, this is mostly for smart
115 if (((RSA_flags(a->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK))
116 || (RSA_flags(b->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK)) {
120 if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0
121 || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0)
126 static int old_rsa_priv_decode(EVP_PKEY *pkey,
127 const unsigned char **pder, int derlen)
131 if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL)
133 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
137 static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
139 return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
142 static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
144 unsigned char *rk = NULL;
149 if (!rsa_param_encode(pkey, &str, &strtype))
151 rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
154 ERR_raise(ERR_LIB_RSA, ERR_R_ASN1_LIB);
155 ASN1_STRING_free(str);
159 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0,
160 strtype, str, rk, rklen)) {
161 ERR_raise(ERR_LIB_RSA, ERR_R_ASN1_LIB);
162 ASN1_STRING_free(str);
163 OPENSSL_clear_free(rk, rklen);
170 static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
173 RSA *rsa = ossl_rsa_key_from_pkcs8(p8, NULL, NULL);
177 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
182 static int int_rsa_size(const EVP_PKEY *pkey)
184 return RSA_size(pkey->pkey.rsa);
187 static int rsa_bits(const EVP_PKEY *pkey)
189 return BN_num_bits(pkey->pkey.rsa->n);
192 static int rsa_security_bits(const EVP_PKEY *pkey)
194 return RSA_security_bits(pkey->pkey.rsa);
197 static void int_rsa_free(EVP_PKEY *pkey)
199 RSA_free(pkey->pkey.rsa);
202 static int rsa_pss_param_print(BIO *bp, int pss_key, RSA_PSS_PARAMS *pss,
206 X509_ALGOR *maskHash = NULL;
208 if (!BIO_indent(bp, indent, 128))
212 if (BIO_puts(bp, "No PSS parameter restrictions\n") <= 0)
216 if (BIO_puts(bp, "PSS parameter restrictions:") <= 0)
219 } else if (pss == NULL) {
220 if (BIO_puts(bp, "(INVALID PSS PARAMETERS)\n") <= 0)
224 if (BIO_puts(bp, "\n") <= 0)
228 if (!BIO_indent(bp, indent, 128))
230 if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
233 if (pss->hashAlgorithm) {
234 if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
236 } else if (BIO_puts(bp, "sha1 (default)") <= 0) {
240 if (BIO_puts(bp, "\n") <= 0)
243 if (!BIO_indent(bp, indent, 128))
246 if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
248 if (pss->maskGenAlgorithm) {
249 if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
251 if (BIO_puts(bp, " with ") <= 0)
253 maskHash = ossl_x509_algor_mgf1_decode(pss->maskGenAlgorithm);
254 if (maskHash != NULL) {
255 if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
257 } else if (BIO_puts(bp, "INVALID") <= 0) {
260 } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) {
265 if (!BIO_indent(bp, indent, 128))
267 if (BIO_printf(bp, "%s Salt Length: 0x", pss_key ? "Minimum" : "") <= 0)
269 if (pss->saltLength) {
270 if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
272 } else if (BIO_puts(bp, "14 (default)") <= 0) {
277 if (!BIO_indent(bp, indent, 128))
279 if (BIO_puts(bp, "Trailer Field: 0x") <= 0)
281 if (pss->trailerField) {
282 if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
284 } else if (BIO_puts(bp, "01 (default)") <= 0) {
292 X509_ALGOR_free(maskHash);
297 static int pkey_rsa_print(BIO *bp, const EVP_PKEY *pkey, int off, int priv)
299 const RSA *x = pkey->pkey.rsa;
302 int ret = 0, mod_len = 0, ex_primes;
305 mod_len = BN_num_bits(x->n);
306 ex_primes = sk_RSA_PRIME_INFO_num(x->prime_infos);
308 if (!BIO_indent(bp, off, 128))
311 if (BIO_printf(bp, "%s ", pkey_is_pss(pkey) ? "RSA-PSS" : "RSA") <= 0)
315 if (BIO_printf(bp, "Private-Key: (%d bit, %d primes)\n",
316 mod_len, ex_primes <= 0 ? 2 : ex_primes + 2) <= 0)
319 s = "publicExponent:";
321 if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0)
326 if (!ASN1_bn_print(bp, str, x->n, NULL, off))
328 if (!ASN1_bn_print(bp, s, x->e, NULL, off))
333 if (!ASN1_bn_print(bp, "privateExponent:", x->d, NULL, off))
335 if (!ASN1_bn_print(bp, "prime1:", x->p, NULL, off))
337 if (!ASN1_bn_print(bp, "prime2:", x->q, NULL, off))
339 if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, NULL, off))
341 if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, NULL, off))
343 if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, NULL, off))
345 for (i = 0; i < sk_RSA_PRIME_INFO_num(x->prime_infos); i++) {
346 /* print multi-prime info */
348 RSA_PRIME_INFO *pinfo;
351 pinfo = sk_RSA_PRIME_INFO_value(x->prime_infos, i);
352 for (j = 0; j < 3; j++) {
353 if (!BIO_indent(bp, off, 128))
357 if (BIO_printf(bp, "prime%d:", i + 3) <= 0)
362 if (BIO_printf(bp, "exponent%d:", i + 3) <= 0)
367 if (BIO_printf(bp, "coefficient%d:", i + 3) <= 0)
374 if (!ASN1_bn_print(bp, "", bn, NULL, off))
379 if (pkey_is_pss(pkey) && !rsa_pss_param_print(bp, 1, x->pss, off))
386 static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
389 return pkey_rsa_print(bp, pkey, indent, 0);
392 static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
395 return pkey_rsa_print(bp, pkey, indent, 1);
398 static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
399 const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
401 if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) {
403 RSA_PSS_PARAMS *pss = ossl_rsa_pss_decode(sigalg);
405 rv = rsa_pss_param_print(bp, 0, pss, indent);
406 RSA_PSS_PARAMS_free(pss);
409 } else if (BIO_puts(bp, "\n") <= 0) {
413 return X509_signature_dump(bp, sig, indent);
417 static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
420 const EVP_MD *mgf1md;
424 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
425 if (pkey->pkey.rsa->pss != NULL) {
426 if (!ossl_rsa_pss_get_param(pkey->pkey.rsa->pss, &md, &mgf1md,
428 ERR_raise(ERR_LIB_RSA, ERR_R_INTERNAL_ERROR);
431 *(int *)arg2 = EVP_MD_get_type(md);
432 /* Return of 2 indicates this MD is mandatory */
435 *(int *)arg2 = NID_sha256;
444 * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter,
445 * suitable for setting an AlgorithmIdentifier.
448 static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
450 const EVP_MD *sigmd, *mgf1md;
451 EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
454 if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0)
456 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
458 if (EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen) <= 0)
461 saltlen = EVP_MD_get_size(sigmd);
462 } else if (saltlen == -2 || saltlen == -3) {
463 saltlen = EVP_PKEY_get_size(pk) - EVP_MD_get_size(sigmd) - 2;
464 if ((EVP_PKEY_get_bits(pk) & 0x7) == 1)
470 return ossl_rsa_pss_params_create(sigmd, mgf1md, saltlen);
473 RSA_PSS_PARAMS *ossl_rsa_pss_params_create(const EVP_MD *sigmd,
474 const EVP_MD *mgf1md, int saltlen)
476 RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
481 pss->saltLength = ASN1_INTEGER_new();
482 if (pss->saltLength == NULL)
484 if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
487 if (!ossl_x509_algor_new_from_md(&pss->hashAlgorithm, sigmd))
491 if (!ossl_x509_algor_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md))
493 if (!ossl_x509_algor_new_from_md(&pss->maskHash, mgf1md))
497 RSA_PSS_PARAMS_free(pss);
501 ASN1_STRING *ossl_rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
503 RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx);
509 os = ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), NULL);
510 RSA_PSS_PARAMS_free(pss);
515 * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL
516 * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are
517 * passed to pkctx instead.
520 int ossl_rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
521 const X509_ALGOR *sigalg, EVP_PKEY *pkey)
525 const EVP_MD *mgf1md = NULL, *md = NULL;
528 /* Sanity check: make sure it is PSS */
529 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
530 ERR_raise(ERR_LIB_RSA, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
533 /* Decode PSS parameters */
534 pss = ossl_rsa_pss_decode(sigalg);
536 if (!ossl_rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) {
537 ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_PSS_PARAMETERS);
541 /* We have all parameters now set up context */
543 if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
546 const EVP_MD *checkmd;
547 if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0)
549 if (EVP_MD_get_type(md) != EVP_MD_get_type(checkmd)) {
550 ERR_raise(ERR_LIB_RSA, RSA_R_DIGEST_DOES_NOT_MATCH);
555 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
558 if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
561 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
567 RSA_PSS_PARAMS_free(pss);
571 static int rsa_pss_verify_param(const EVP_MD **pmd, const EVP_MD **pmgf1md,
572 int *psaltlen, int *ptrailerField)
574 if (psaltlen != NULL && *psaltlen < 0) {
575 ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_SALT_LENGTH);
579 * low-level routines support only trailer field 0xbc (value 1) and
580 * PKCS#1 says we should reject any other value anyway.
582 if (ptrailerField != NULL && *ptrailerField != 1) {
583 ERR_raise(ERR_LIB_RSA, RSA_R_INVALID_TRAILER);
589 int ossl_rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd,
590 const EVP_MD **pmgf1md, int *psaltlen)
593 * Callers do not care about the trailer field, and yet, we must
594 * pass it from get_param to verify_param, since the latter checks
597 * When callers start caring, it's a simple thing to add another
598 * argument to this function.
600 int trailerField = 0;
602 return ossl_rsa_pss_get_param_unverified(pss, pmd, pmgf1md, psaltlen,
604 && rsa_pss_verify_param(pmd, pmgf1md, psaltlen, &trailerField);
608 * Customised RSA item verification routine. This is called when a signature
609 * is encountered requiring special handling. We currently only handle PSS.
612 static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it,
613 const void *asn, const X509_ALGOR *sigalg,
614 const ASN1_BIT_STRING *sig, EVP_PKEY *pkey)
616 /* Sanity check: make sure it is PSS */
617 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
618 ERR_raise(ERR_LIB_RSA, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
621 if (ossl_rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
628 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *asn,
629 X509_ALGOR *alg1, X509_ALGOR *alg2,
630 ASN1_BIT_STRING *sig)
633 EVP_PKEY_CTX *pkctx = EVP_MD_CTX_get_pkey_ctx(ctx);
635 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
637 if (pad_mode == RSA_PKCS1_PADDING)
639 if (pad_mode == RSA_PKCS1_PSS_PADDING) {
640 ASN1_STRING *os1 = ossl_rsa_ctx_to_pss_string(pkctx);
644 /* Duplicate parameters if we have to */
646 ASN1_STRING *os2 = ASN1_STRING_dup(os1);
650 if (!X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
651 V_ASN1_SEQUENCE, os2)) {
652 ASN1_STRING_free(os2);
656 if (!X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
657 V_ASN1_SEQUENCE, os1))
661 ASN1_STRING_free(os1);
667 static int rsa_sig_info_set(X509_SIG_INFO *siginf, const X509_ALGOR *sigalg,
668 const ASN1_STRING *sig)
673 const EVP_MD *mgf1md = NULL, *md = NULL;
677 /* Sanity check: make sure it is PSS */
678 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS)
680 /* Decode PSS parameters */
681 pss = ossl_rsa_pss_decode(sigalg);
682 if (!ossl_rsa_pss_get_param(pss, &md, &mgf1md, &saltlen))
684 mdnid = EVP_MD_get_type(md);
686 * For TLS need SHA256, SHA384 or SHA512, digest and MGF1 digest must
687 * match and salt length must equal digest size
689 if ((mdnid == NID_sha256 || mdnid == NID_sha384 || mdnid == NID_sha512)
690 && mdnid == EVP_MD_get_type(mgf1md)
691 && saltlen == EVP_MD_get_size(md))
692 flags = X509_SIG_INFO_TLS;
695 /* Note: security bits half number of digest bits */
696 secbits = EVP_MD_get_size(md) * 4;
698 * SHA1 and MD5 are known to be broken. Reduce security bits so that
699 * they're no longer accepted at security level 1. The real values don't
700 * really matter as long as they're lower than 80, which is our security
702 * https://eprint.iacr.org/2020/014 puts a chosen-prefix attack for SHA1 at
704 * https://documents.epfl.ch/users/l/le/lenstra/public/papers/lat.pdf
705 * puts a chosen-prefix attack for MD5 at 2^39.
707 if (mdnid == NID_sha1)
709 else if (mdnid == NID_md5_sha1)
711 else if (mdnid == NID_md5)
713 X509_SIG_INFO_set(siginf, mdnid, EVP_PKEY_RSA_PSS, secbits,
717 RSA_PSS_PARAMS_free(pss);
721 static int rsa_pkey_check(const EVP_PKEY *pkey)
723 return RSA_check_key_ex(pkey->pkey.rsa, NULL);
726 static size_t rsa_pkey_dirty_cnt(const EVP_PKEY *pkey)
728 return pkey->pkey.rsa->dirty_cnt;
732 * There is no need to do RSA_test_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS)
733 * checks in this method since the caller tests EVP_KEYMGMT_is_a() first.
735 static int rsa_int_export_to(const EVP_PKEY *from, int rsa_type,
737 OSSL_FUNC_keymgmt_import_fn *importer,
738 OSSL_LIB_CTX *libctx, const char *propq)
740 RSA *rsa = from->pkey.rsa;
741 OSSL_PARAM_BLD *tmpl = OSSL_PARAM_BLD_new();
742 OSSL_PARAM *params = NULL;
748 /* Public parameters must always be present */
749 if (RSA_get0_n(rsa) == NULL || RSA_get0_e(rsa) == NULL)
752 if (!ossl_rsa_todata(rsa, tmpl, NULL, 1))
755 selection |= OSSL_KEYMGMT_SELECT_PUBLIC_KEY;
756 if (RSA_get0_d(rsa) != NULL)
757 selection |= OSSL_KEYMGMT_SELECT_PRIVATE_KEY;
759 if (rsa->pss != NULL) {
760 const EVP_MD *md = NULL, *mgf1md = NULL;
761 int md_nid, mgf1md_nid, saltlen, trailerfield;
762 RSA_PSS_PARAMS_30 pss_params;
764 if (!ossl_rsa_pss_get_param_unverified(rsa->pss, &md, &mgf1md,
765 &saltlen, &trailerfield))
767 md_nid = EVP_MD_get_type(md);
768 mgf1md_nid = EVP_MD_get_type(mgf1md);
769 if (!ossl_rsa_pss_params_30_set_defaults(&pss_params)
770 || !ossl_rsa_pss_params_30_set_hashalg(&pss_params, md_nid)
771 || !ossl_rsa_pss_params_30_set_maskgenhashalg(&pss_params,
773 || !ossl_rsa_pss_params_30_set_saltlen(&pss_params, saltlen)
774 || !ossl_rsa_pss_params_30_todata(&pss_params, tmpl, NULL))
776 selection |= OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS;
779 if ((params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
782 /* We export, the provider imports */
783 rv = importer(to_keydata, selection, params);
786 OSSL_PARAM_free(params);
787 OSSL_PARAM_BLD_free(tmpl);
791 static int rsa_int_import_from(const OSSL_PARAM params[], void *vpctx,
794 EVP_PKEY_CTX *pctx = vpctx;
795 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(pctx);
796 RSA *rsa = ossl_rsa_new_with_ctx(pctx->libctx);
797 RSA_PSS_PARAMS_30 rsa_pss_params = { 0, };
798 int pss_defaults_set = 0;
802 ERR_raise(ERR_LIB_DH, ERR_R_RSA_LIB);
806 RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
807 RSA_set_flags(rsa, rsa_type);
809 if (!ossl_rsa_pss_params_30_fromdata(&rsa_pss_params, &pss_defaults_set,
810 params, pctx->libctx))
814 case RSA_FLAG_TYPE_RSA:
816 * Were PSS parameters filled in?
817 * In that case, something's wrong
819 if (!ossl_rsa_pss_params_30_is_unrestricted(&rsa_pss_params))
822 case RSA_FLAG_TYPE_RSASSAPSS:
824 * Were PSS parameters filled in? In that case, create the old
825 * RSA_PSS_PARAMS structure. Otherwise, this is an unrestricted key.
827 if (!ossl_rsa_pss_params_30_is_unrestricted(&rsa_pss_params)) {
828 /* Create the older RSA_PSS_PARAMS from RSA_PSS_PARAMS_30 data */
829 int mdnid = ossl_rsa_pss_params_30_hashalg(&rsa_pss_params);
830 int mgf1mdnid = ossl_rsa_pss_params_30_maskgenhashalg(&rsa_pss_params);
831 int saltlen = ossl_rsa_pss_params_30_saltlen(&rsa_pss_params);
832 const EVP_MD *md = EVP_get_digestbynid(mdnid);
833 const EVP_MD *mgf1md = EVP_get_digestbynid(mgf1mdnid);
835 if ((rsa->pss = ossl_rsa_pss_params_create(md, mgf1md,
841 /* RSA key sub-types we don't know how to handle yet */
845 if (!ossl_rsa_fromdata(rsa, params, 1))
849 case RSA_FLAG_TYPE_RSA:
850 ok = EVP_PKEY_assign_RSA(pkey, rsa);
852 case RSA_FLAG_TYPE_RSASSAPSS:
853 ok = EVP_PKEY_assign(pkey, EVP_PKEY_RSA_PSS, rsa);
863 static int rsa_pkey_export_to(const EVP_PKEY *from, void *to_keydata,
864 OSSL_FUNC_keymgmt_import_fn *importer,
865 OSSL_LIB_CTX *libctx, const char *propq)
867 return rsa_int_export_to(from, RSA_FLAG_TYPE_RSA, to_keydata,
868 importer, libctx, propq);
871 static int rsa_pss_pkey_export_to(const EVP_PKEY *from, void *to_keydata,
872 OSSL_FUNC_keymgmt_import_fn *importer,
873 OSSL_LIB_CTX *libctx, const char *propq)
875 return rsa_int_export_to(from, RSA_FLAG_TYPE_RSASSAPSS, to_keydata,
876 importer, libctx, propq);
879 static int rsa_pkey_import_from(const OSSL_PARAM params[], void *vpctx)
881 return rsa_int_import_from(params, vpctx, RSA_FLAG_TYPE_RSA);
884 static int rsa_pss_pkey_import_from(const OSSL_PARAM params[], void *vpctx)
886 return rsa_int_import_from(params, vpctx, RSA_FLAG_TYPE_RSASSAPSS);
889 static int rsa_pkey_copy(EVP_PKEY *to, EVP_PKEY *from)
891 RSA *rsa = from->pkey.rsa;
896 dupkey = ossl_rsa_dup(rsa, OSSL_KEYMGMT_SELECT_ALL);
901 ret = EVP_PKEY_assign(to, from->type, dupkey);
907 const EVP_PKEY_ASN1_METHOD ossl_rsa_asn1_meths[2] = {
911 ASN1_PKEY_SIGPARAM_NULL,
914 "OpenSSL RSA method",
946 rsa_pkey_import_from,
956 const EVP_PKEY_ASN1_METHOD ossl_rsa_pss_asn1_meth = {
959 ASN1_PKEY_SIGPARAM_NULL,
962 "OpenSSL RSA-PSS method",
992 rsa_pss_pkey_export_to,
993 rsa_pss_pkey_import_from,