2 * Copyright 2019-2022 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 <openssl/crypto.h>
18 #include <openssl/core_dispatch.h>
19 #include <openssl/core_names.h>
20 #include <openssl/err.h>
21 #include <openssl/rsa.h>
22 #include <openssl/params.h>
23 #include <openssl/evp.h>
24 #include <openssl/proverr.h>
25 #include "internal/cryptlib.h"
26 #include "internal/nelem.h"
27 #include "internal/sizes.h"
28 #include "crypto/rsa.h"
29 #include "prov/providercommon.h"
30 #include "prov/implementations.h"
31 #include "prov/provider_ctx.h"
32 #include "prov/der_rsa.h"
33 #include "prov/securitycheck.h"
35 #define RSA_DEFAULT_DIGEST_NAME OSSL_DIGEST_NAME_SHA1
37 static OSSL_FUNC_signature_newctx_fn rsa_newctx;
38 static OSSL_FUNC_signature_sign_init_fn rsa_sign_init;
39 static OSSL_FUNC_signature_verify_init_fn rsa_verify_init;
40 static OSSL_FUNC_signature_verify_recover_init_fn rsa_verify_recover_init;
41 static OSSL_FUNC_signature_sign_fn rsa_sign;
42 static OSSL_FUNC_signature_verify_fn rsa_verify;
43 static OSSL_FUNC_signature_verify_recover_fn rsa_verify_recover;
44 static OSSL_FUNC_signature_digest_sign_init_fn rsa_digest_sign_init;
45 static OSSL_FUNC_signature_digest_sign_update_fn rsa_digest_signverify_update;
46 static OSSL_FUNC_signature_digest_sign_final_fn rsa_digest_sign_final;
47 static OSSL_FUNC_signature_digest_verify_init_fn rsa_digest_verify_init;
48 static OSSL_FUNC_signature_digest_verify_update_fn rsa_digest_signverify_update;
49 static OSSL_FUNC_signature_digest_verify_final_fn rsa_digest_verify_final;
50 static OSSL_FUNC_signature_freectx_fn rsa_freectx;
51 static OSSL_FUNC_signature_dupctx_fn rsa_dupctx;
52 static OSSL_FUNC_signature_get_ctx_params_fn rsa_get_ctx_params;
53 static OSSL_FUNC_signature_gettable_ctx_params_fn rsa_gettable_ctx_params;
54 static OSSL_FUNC_signature_set_ctx_params_fn rsa_set_ctx_params;
55 static OSSL_FUNC_signature_settable_ctx_params_fn rsa_settable_ctx_params;
56 static OSSL_FUNC_signature_get_ctx_md_params_fn rsa_get_ctx_md_params;
57 static OSSL_FUNC_signature_gettable_ctx_md_params_fn rsa_gettable_ctx_md_params;
58 static OSSL_FUNC_signature_set_ctx_md_params_fn rsa_set_ctx_md_params;
59 static OSSL_FUNC_signature_settable_ctx_md_params_fn rsa_settable_ctx_md_params;
61 static OSSL_ITEM padding_item[] = {
62 { RSA_PKCS1_PADDING, OSSL_PKEY_RSA_PAD_MODE_PKCSV15 },
63 { RSA_NO_PADDING, OSSL_PKEY_RSA_PAD_MODE_NONE },
64 { RSA_X931_PADDING, OSSL_PKEY_RSA_PAD_MODE_X931 },
65 { RSA_PKCS1_PSS_PADDING, OSSL_PKEY_RSA_PAD_MODE_PSS },
70 * What's passed as an actual key is defined by the KEYMGMT interface.
71 * We happen to know that our KEYMGMT simply passes RSA structures, so
72 * we use that here too.
82 * Flag to determine if the hash function can be changed (1) or not (0)
83 * Because it's dangerous to change during a DigestSign or DigestVerify
84 * operation, this flag is cleared by their Init function, and set again
85 * by their Final function.
87 unsigned int flag_allow_md : 1;
88 unsigned int mgf1_md_set : 1;
94 char mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */
96 /* RSA padding mode */
98 /* message digest for MGF1 */
101 char mgf1_mdname[OSSL_MAX_NAME_SIZE]; /* Purely informational */
102 /* PSS salt length */
104 /* Minimum salt length or -1 if no PSS parameter restriction */
112 /* True if PSS parameters are restricted */
113 #define rsa_pss_restricted(prsactx) (prsactx->min_saltlen != -1)
115 static size_t rsa_get_md_size(const PROV_RSA_CTX *prsactx)
117 if (prsactx->md != NULL)
118 return EVP_MD_get_size(prsactx->md);
122 static int rsa_check_padding(const PROV_RSA_CTX *prsactx,
123 const char *mdname, const char *mgf1_mdname,
126 switch (prsactx->pad_mode) {
128 if (mdname != NULL || mdnid != NID_undef) {
129 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE);
133 case RSA_X931_PADDING:
134 if (RSA_X931_hash_id(mdnid) == -1) {
135 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_X931_DIGEST);
139 case RSA_PKCS1_PSS_PADDING:
140 if (rsa_pss_restricted(prsactx))
141 if ((mdname != NULL && !EVP_MD_is_a(prsactx->md, mdname))
142 || (mgf1_mdname != NULL
143 && !EVP_MD_is_a(prsactx->mgf1_md, mgf1_mdname))) {
144 ERR_raise(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED);
155 static int rsa_check_parameters(PROV_RSA_CTX *prsactx, int min_saltlen)
157 if (prsactx->pad_mode == RSA_PKCS1_PSS_PADDING) {
160 /* See if minimum salt length exceeds maximum possible */
161 max_saltlen = RSA_size(prsactx->rsa) - EVP_MD_get_size(prsactx->md);
162 if ((RSA_bits(prsactx->rsa) & 0x7) == 1)
164 if (min_saltlen < 0 || min_saltlen > max_saltlen) {
165 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH);
168 prsactx->min_saltlen = min_saltlen;
173 static void *rsa_newctx(void *provctx, const char *propq)
175 PROV_RSA_CTX *prsactx = NULL;
176 char *propq_copy = NULL;
178 if (!ossl_prov_is_running())
181 if ((prsactx = OPENSSL_zalloc(sizeof(PROV_RSA_CTX))) == NULL
183 && (propq_copy = OPENSSL_strdup(propq)) == NULL)) {
184 OPENSSL_free(prsactx);
185 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
189 prsactx->libctx = PROV_LIBCTX_OF(provctx);
190 prsactx->flag_allow_md = 1;
191 prsactx->propq = propq_copy;
192 /* Maximum for sign, auto for verify */
193 prsactx->saltlen = RSA_PSS_SALTLEN_AUTO;
194 prsactx->min_saltlen = -1;
198 static int rsa_pss_compute_saltlen(PROV_RSA_CTX *ctx)
200 int saltlen = ctx->saltlen;
202 if (saltlen == RSA_PSS_SALTLEN_DIGEST) {
203 saltlen = EVP_MD_get_size(ctx->md);
204 } else if (saltlen == RSA_PSS_SALTLEN_AUTO || saltlen == RSA_PSS_SALTLEN_MAX) {
205 saltlen = RSA_size(ctx->rsa) - EVP_MD_get_size(ctx->md) - 2;
206 if ((RSA_bits(ctx->rsa) & 0x7) == 1)
210 ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
212 } else if (saltlen < ctx->min_saltlen) {
213 ERR_raise_data(ERR_LIB_PROV, PROV_R_PSS_SALTLEN_TOO_SMALL,
214 "minimum salt length: %d, actual salt length: %d",
215 ctx->min_saltlen, saltlen);
221 static unsigned char *rsa_generate_signature_aid(PROV_RSA_CTX *ctx,
222 unsigned char *aid_buf,
227 unsigned char *aid = NULL;
229 RSA_PSS_PARAMS_30 pss_params;
232 if (!WPACKET_init_der(&pkt, aid_buf, buf_len)) {
233 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
237 switch (ctx->pad_mode) {
238 case RSA_PKCS1_PADDING:
239 ret = ossl_DER_w_algorithmIdentifier_MDWithRSAEncryption(&pkt, -1,
244 } else if (ret == 0) {
245 ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
248 ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED,
249 "Algorithm ID generation - md NID: %d",
252 case RSA_PKCS1_PSS_PADDING:
253 saltlen = rsa_pss_compute_saltlen(ctx);
256 if (!ossl_rsa_pss_params_30_set_defaults(&pss_params)
257 || !ossl_rsa_pss_params_30_set_hashalg(&pss_params, ctx->mdnid)
258 || !ossl_rsa_pss_params_30_set_maskgenhashalg(&pss_params,
260 || !ossl_rsa_pss_params_30_set_saltlen(&pss_params, saltlen)
261 || !ossl_DER_w_algorithmIdentifier_RSA_PSS(&pkt, -1,
262 RSA_FLAG_TYPE_RSASSAPSS,
264 ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
269 ERR_raise_data(ERR_LIB_PROV, ERR_R_UNSUPPORTED,
270 "Algorithm ID generation - pad mode: %d",
274 if (WPACKET_finish(&pkt)) {
275 WPACKET_get_total_written(&pkt, aid_len);
276 aid = WPACKET_get_curr(&pkt);
279 WPACKET_cleanup(&pkt);
283 static int rsa_setup_md(PROV_RSA_CTX *ctx, const char *mdname,
287 mdprops = ctx->propq;
289 if (mdname != NULL) {
290 EVP_MD *md = EVP_MD_fetch(ctx->libctx, mdname, mdprops);
291 int sha1_allowed = (ctx->operation != EVP_PKEY_OP_SIGN);
292 int md_nid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md,
294 size_t mdname_len = strlen(mdname);
298 || !rsa_check_padding(ctx, mdname, NULL, md_nid)
299 || mdname_len >= sizeof(ctx->mdname)) {
301 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
302 "%s could not be fetched", mdname);
304 ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
305 "digest=%s", mdname);
306 if (mdname_len >= sizeof(ctx->mdname))
307 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
308 "%s exceeds name buffer length", mdname);
313 if (!ctx->flag_allow_md) {
314 if (ctx->mdname[0] != '\0' && !EVP_MD_is_a(md, ctx->mdname)) {
315 ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
316 "digest %s != %s", mdname, ctx->mdname);
324 if (!ctx->mgf1_md_set) {
325 if (!EVP_MD_up_ref(md)) {
329 EVP_MD_free(ctx->mgf1_md);
331 ctx->mgf1_mdnid = md_nid;
332 OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname));
335 EVP_MD_CTX_free(ctx->mdctx);
336 EVP_MD_free(ctx->md);
341 OPENSSL_strlcpy(ctx->mdname, mdname, sizeof(ctx->mdname));
347 static int rsa_setup_mgf1_md(PROV_RSA_CTX *ctx, const char *mdname,
355 mdprops = ctx->propq;
357 if ((md = EVP_MD_fetch(ctx->libctx, mdname, mdprops)) == NULL) {
358 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
359 "%s could not be fetched", mdname);
362 /* The default for mgf1 is SHA1 - so allow SHA1 */
363 if ((mdnid = ossl_digest_rsa_sign_get_md_nid(ctx->libctx, md, 1)) <= 0
364 || !rsa_check_padding(ctx, NULL, mdname, mdnid)) {
366 ERR_raise_data(ERR_LIB_PROV, PROV_R_DIGEST_NOT_ALLOWED,
367 "digest=%s", mdname);
371 len = OPENSSL_strlcpy(ctx->mgf1_mdname, mdname, sizeof(ctx->mgf1_mdname));
372 if (len >= sizeof(ctx->mgf1_mdname)) {
373 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
374 "%s exceeds name buffer length", mdname);
379 EVP_MD_free(ctx->mgf1_md);
381 ctx->mgf1_mdnid = mdnid;
382 ctx->mgf1_md_set = 1;
386 static int rsa_signverify_init(void *vprsactx, void *vrsa,
387 const OSSL_PARAM params[], int operation)
389 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
391 if (!ossl_prov_is_running() || prsactx == NULL)
394 if (vrsa == NULL && prsactx->rsa == NULL) {
395 ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
400 if (!ossl_rsa_check_key(prsactx->libctx, vrsa, operation))
403 if (!RSA_up_ref(vrsa))
405 RSA_free(prsactx->rsa);
409 prsactx->operation = operation;
411 /* Maximum for sign, auto for verify */
412 prsactx->saltlen = RSA_PSS_SALTLEN_AUTO;
413 prsactx->min_saltlen = -1;
415 switch (RSA_test_flags(prsactx->rsa, RSA_FLAG_TYPE_MASK)) {
416 case RSA_FLAG_TYPE_RSA:
417 prsactx->pad_mode = RSA_PKCS1_PADDING;
419 case RSA_FLAG_TYPE_RSASSAPSS:
420 prsactx->pad_mode = RSA_PKCS1_PSS_PADDING;
423 const RSA_PSS_PARAMS_30 *pss =
424 ossl_rsa_get0_pss_params_30(prsactx->rsa);
426 if (!ossl_rsa_pss_params_30_is_unrestricted(pss)) {
427 int md_nid = ossl_rsa_pss_params_30_hashalg(pss);
428 int mgf1md_nid = ossl_rsa_pss_params_30_maskgenhashalg(pss);
429 int min_saltlen = ossl_rsa_pss_params_30_saltlen(pss);
430 const char *mdname, *mgf1mdname;
433 mdname = ossl_rsa_oaeppss_nid2name(md_nid);
434 mgf1mdname = ossl_rsa_oaeppss_nid2name(mgf1md_nid);
436 if (mdname == NULL) {
437 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
438 "PSS restrictions lack hash algorithm");
441 if (mgf1mdname == NULL) {
442 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
443 "PSS restrictions lack MGF1 hash algorithm");
447 len = OPENSSL_strlcpy(prsactx->mdname, mdname,
448 sizeof(prsactx->mdname));
449 if (len >= sizeof(prsactx->mdname)) {
450 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
451 "hash algorithm name too long");
454 len = OPENSSL_strlcpy(prsactx->mgf1_mdname, mgf1mdname,
455 sizeof(prsactx->mgf1_mdname));
456 if (len >= sizeof(prsactx->mgf1_mdname)) {
457 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST,
458 "MGF1 hash algorithm name too long");
461 prsactx->saltlen = min_saltlen;
463 /* call rsa_setup_mgf1_md before rsa_setup_md to avoid duplication */
464 if (!rsa_setup_mgf1_md(prsactx, mgf1mdname, prsactx->propq)
465 || !rsa_setup_md(prsactx, mdname, prsactx->propq)
466 || !rsa_check_parameters(prsactx, min_saltlen))
473 ERR_raise(ERR_LIB_RSA, PROV_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
477 if (!rsa_set_ctx_params(prsactx, params))
483 static int setup_tbuf(PROV_RSA_CTX *ctx)
485 if (ctx->tbuf != NULL)
487 if ((ctx->tbuf = OPENSSL_malloc(RSA_size(ctx->rsa))) == NULL) {
488 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
494 static void clean_tbuf(PROV_RSA_CTX *ctx)
496 if (ctx->tbuf != NULL)
497 OPENSSL_cleanse(ctx->tbuf, RSA_size(ctx->rsa));
500 static void free_tbuf(PROV_RSA_CTX *ctx)
503 OPENSSL_free(ctx->tbuf);
507 static int rsa_sign_init(void *vprsactx, void *vrsa, const OSSL_PARAM params[])
509 if (!ossl_prov_is_running())
511 return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_SIGN);
514 static int rsa_sign(void *vprsactx, unsigned char *sig, size_t *siglen,
515 size_t sigsize, const unsigned char *tbs, size_t tbslen)
517 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
519 size_t rsasize = RSA_size(prsactx->rsa);
520 size_t mdsize = rsa_get_md_size(prsactx);
522 if (!ossl_prov_is_running())
530 if (sigsize < rsasize) {
531 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SIGNATURE_SIZE,
532 "is %zu, should be at least %zu", sigsize, rsasize);
537 if (tbslen != mdsize) {
538 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH);
543 if (EVP_MD_is_a(prsactx->md, OSSL_DIGEST_NAME_MDC2)) {
546 if (prsactx->pad_mode != RSA_PKCS1_PADDING) {
547 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
548 "only PKCS#1 padding supported with MDC2");
551 ret = RSA_sign_ASN1_OCTET_STRING(0, tbs, tbslen, sig, &sltmp,
555 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
562 switch (prsactx->pad_mode) {
563 case RSA_X931_PADDING:
564 if ((size_t)RSA_size(prsactx->rsa) < tbslen + 1) {
565 ERR_raise_data(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL,
566 "RSA key size = %d, expected minimum = %d",
567 RSA_size(prsactx->rsa), tbslen + 1);
570 if (!setup_tbuf(prsactx)) {
571 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
574 memcpy(prsactx->tbuf, tbs, tbslen);
575 prsactx->tbuf[tbslen] = RSA_X931_hash_id(prsactx->mdnid);
576 ret = RSA_private_encrypt(tbslen + 1, prsactx->tbuf,
577 sig, prsactx->rsa, RSA_X931_PADDING);
581 case RSA_PKCS1_PADDING:
585 ret = RSA_sign(prsactx->mdnid, tbs, tbslen, sig, &sltmp,
588 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
595 case RSA_PKCS1_PSS_PADDING:
596 /* Check PSS restrictions */
597 if (rsa_pss_restricted(prsactx)) {
598 switch (prsactx->saltlen) {
599 case RSA_PSS_SALTLEN_DIGEST:
600 if (prsactx->min_saltlen > EVP_MD_get_size(prsactx->md)) {
601 ERR_raise_data(ERR_LIB_PROV,
602 PROV_R_PSS_SALTLEN_TOO_SMALL,
603 "minimum salt length set to %d, "
604 "but the digest only gives %d",
605 prsactx->min_saltlen,
606 EVP_MD_get_size(prsactx->md));
611 if (prsactx->saltlen >= 0
612 && prsactx->saltlen < prsactx->min_saltlen) {
613 ERR_raise_data(ERR_LIB_PROV,
614 PROV_R_PSS_SALTLEN_TOO_SMALL,
615 "minimum salt length set to %d, but the"
616 "actual salt length is only set to %d",
617 prsactx->min_saltlen,
624 if (!setup_tbuf(prsactx))
626 if (!RSA_padding_add_PKCS1_PSS_mgf1(prsactx->rsa,
628 prsactx->md, prsactx->mgf1_md,
630 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
633 ret = RSA_private_encrypt(RSA_size(prsactx->rsa), prsactx->tbuf,
634 sig, prsactx->rsa, RSA_NO_PADDING);
639 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
640 "Only X.931, PKCS#1 v1.5 or PSS padding allowed");
644 ret = RSA_private_encrypt(tbslen, tbs, sig, prsactx->rsa,
652 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
660 static int rsa_verify_recover_init(void *vprsactx, void *vrsa,
661 const OSSL_PARAM params[])
663 if (!ossl_prov_is_running())
665 return rsa_signverify_init(vprsactx, vrsa, params,
666 EVP_PKEY_OP_VERIFYRECOVER);
669 static int rsa_verify_recover(void *vprsactx,
673 const unsigned char *sig,
676 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
679 if (!ossl_prov_is_running())
683 *routlen = RSA_size(prsactx->rsa);
687 if (prsactx->md != NULL) {
688 switch (prsactx->pad_mode) {
689 case RSA_X931_PADDING:
690 if (!setup_tbuf(prsactx))
692 ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa,
695 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
699 if (prsactx->tbuf[ret] != RSA_X931_hash_id(prsactx->mdnid)) {
700 ERR_raise(ERR_LIB_PROV, PROV_R_ALGORITHM_MISMATCH);
703 if (ret != EVP_MD_get_size(prsactx->md)) {
704 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH,
705 "Should be %d, but got %d",
706 EVP_MD_get_size(prsactx->md), ret);
711 if (rout != prsactx->tbuf) {
712 if (routsize < (size_t)ret) {
713 ERR_raise_data(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL,
714 "buffer size is %d, should be %d",
718 memcpy(rout, prsactx->tbuf, ret);
722 case RSA_PKCS1_PADDING:
726 ret = ossl_rsa_verify(prsactx->mdnid, NULL, 0, rout, &sltmp,
727 sig, siglen, prsactx->rsa);
729 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
737 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
738 "Only X.931 or PKCS#1 v1.5 padding allowed");
742 ret = RSA_public_decrypt(siglen, sig, rout, prsactx->rsa,
745 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
753 static int rsa_verify_init(void *vprsactx, void *vrsa,
754 const OSSL_PARAM params[])
756 if (!ossl_prov_is_running())
758 return rsa_signverify_init(vprsactx, vrsa, params, EVP_PKEY_OP_VERIFY);
761 static int rsa_verify(void *vprsactx, const unsigned char *sig, size_t siglen,
762 const unsigned char *tbs, size_t tbslen)
764 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
767 if (!ossl_prov_is_running())
769 if (prsactx->md != NULL) {
770 switch (prsactx->pad_mode) {
771 case RSA_PKCS1_PADDING:
772 if (!RSA_verify(prsactx->mdnid, tbs, tbslen, sig, siglen,
774 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
778 case RSA_X931_PADDING:
779 if (!setup_tbuf(prsactx))
781 if (rsa_verify_recover(prsactx, prsactx->tbuf, &rslen, 0,
785 case RSA_PKCS1_PSS_PADDING:
791 * We need to check this for the RSA_verify_PKCS1_PSS_mgf1()
794 mdsize = rsa_get_md_size(prsactx);
795 if (tbslen != mdsize) {
796 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_DIGEST_LENGTH,
797 "Should be %d, but got %d",
802 if (!setup_tbuf(prsactx))
804 ret = RSA_public_decrypt(siglen, sig, prsactx->tbuf,
805 prsactx->rsa, RSA_NO_PADDING);
807 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
810 ret = RSA_verify_PKCS1_PSS_mgf1(prsactx->rsa, tbs,
811 prsactx->md, prsactx->mgf1_md,
815 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
821 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_PADDING_MODE,
822 "Only X.931, PKCS#1 v1.5 or PSS padding allowed");
826 if (!setup_tbuf(prsactx))
828 rslen = RSA_public_decrypt(siglen, sig, prsactx->tbuf, prsactx->rsa,
831 ERR_raise(ERR_LIB_PROV, ERR_R_RSA_LIB);
836 if ((rslen != tbslen) || memcmp(tbs, prsactx->tbuf, rslen))
842 static int rsa_digest_signverify_init(void *vprsactx, const char *mdname,
843 void *vrsa, const OSSL_PARAM params[],
846 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
848 if (!ossl_prov_is_running())
851 if (!rsa_signverify_init(vprsactx, vrsa, params, operation))
855 /* was rsa_setup_md already called in rsa_signverify_init()? */
856 && (mdname[0] == '\0' || OPENSSL_strcasecmp(prsactx->mdname, mdname) != 0)
857 && !rsa_setup_md(prsactx, mdname, prsactx->propq))
860 prsactx->flag_allow_md = 0;
862 if (prsactx->mdctx == NULL) {
863 prsactx->mdctx = EVP_MD_CTX_new();
864 if (prsactx->mdctx == NULL)
868 if (!EVP_DigestInit_ex2(prsactx->mdctx, prsactx->md, params))
874 EVP_MD_CTX_free(prsactx->mdctx);
875 prsactx->mdctx = NULL;
879 static int rsa_digest_signverify_update(void *vprsactx,
880 const unsigned char *data,
883 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
885 if (prsactx == NULL || prsactx->mdctx == NULL)
888 return EVP_DigestUpdate(prsactx->mdctx, data, datalen);
891 static int rsa_digest_sign_init(void *vprsactx, const char *mdname,
892 void *vrsa, const OSSL_PARAM params[])
894 if (!ossl_prov_is_running())
896 return rsa_digest_signverify_init(vprsactx, mdname, vrsa,
897 params, EVP_PKEY_OP_SIGN);
900 static int rsa_digest_sign_final(void *vprsactx, unsigned char *sig,
901 size_t *siglen, size_t sigsize)
903 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
904 unsigned char digest[EVP_MAX_MD_SIZE];
905 unsigned int dlen = 0;
907 if (!ossl_prov_is_running() || prsactx == NULL)
909 prsactx->flag_allow_md = 1;
910 if (prsactx->mdctx == NULL)
913 * If sig is NULL then we're just finding out the sig size. Other fields
914 * are ignored. Defer to rsa_sign.
918 * The digests used here are all known (see rsa_get_md_nid()), so they
919 * should not exceed the internal buffer size of EVP_MAX_MD_SIZE.
921 if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen))
925 return rsa_sign(vprsactx, sig, siglen, sigsize, digest, (size_t)dlen);
928 static int rsa_digest_verify_init(void *vprsactx, const char *mdname,
929 void *vrsa, const OSSL_PARAM params[])
931 if (!ossl_prov_is_running())
933 return rsa_digest_signverify_init(vprsactx, mdname, vrsa,
934 params, EVP_PKEY_OP_VERIFY);
937 int rsa_digest_verify_final(void *vprsactx, const unsigned char *sig,
940 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
941 unsigned char digest[EVP_MAX_MD_SIZE];
942 unsigned int dlen = 0;
944 if (!ossl_prov_is_running())
949 prsactx->flag_allow_md = 1;
950 if (prsactx->mdctx == NULL)
954 * The digests used here are all known (see rsa_get_md_nid()), so they
955 * should not exceed the internal buffer size of EVP_MAX_MD_SIZE.
957 if (!EVP_DigestFinal_ex(prsactx->mdctx, digest, &dlen))
960 return rsa_verify(vprsactx, sig, siglen, digest, (size_t)dlen);
963 static void rsa_freectx(void *vprsactx)
965 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
970 EVP_MD_CTX_free(prsactx->mdctx);
971 EVP_MD_free(prsactx->md);
972 EVP_MD_free(prsactx->mgf1_md);
973 OPENSSL_free(prsactx->propq);
975 RSA_free(prsactx->rsa);
977 OPENSSL_clear_free(prsactx, sizeof(*prsactx));
980 static void *rsa_dupctx(void *vprsactx)
982 PROV_RSA_CTX *srcctx = (PROV_RSA_CTX *)vprsactx;
983 PROV_RSA_CTX *dstctx;
985 if (!ossl_prov_is_running())
988 dstctx = OPENSSL_zalloc(sizeof(*srcctx));
989 if (dstctx == NULL) {
990 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
997 dstctx->mdctx = NULL;
999 dstctx->propq = NULL;
1001 if (srcctx->rsa != NULL && !RSA_up_ref(srcctx->rsa))
1003 dstctx->rsa = srcctx->rsa;
1005 if (srcctx->md != NULL && !EVP_MD_up_ref(srcctx->md))
1007 dstctx->md = srcctx->md;
1009 if (srcctx->mgf1_md != NULL && !EVP_MD_up_ref(srcctx->mgf1_md))
1011 dstctx->mgf1_md = srcctx->mgf1_md;
1013 if (srcctx->mdctx != NULL) {
1014 dstctx->mdctx = EVP_MD_CTX_new();
1015 if (dstctx->mdctx == NULL
1016 || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx))
1020 if (srcctx->propq != NULL) {
1021 dstctx->propq = OPENSSL_strdup(srcctx->propq);
1022 if (dstctx->propq == NULL)
1028 rsa_freectx(dstctx);
1032 static int rsa_get_ctx_params(void *vprsactx, OSSL_PARAM *params)
1034 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1037 if (prsactx == NULL)
1040 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID);
1042 /* The Algorithm Identifier of the combined signature algorithm */
1043 unsigned char aid_buf[128];
1047 aid = rsa_generate_signature_aid(prsactx, aid_buf,
1048 sizeof(aid_buf), &aid_len);
1049 if (aid == NULL || !OSSL_PARAM_set_octet_string(p, aid, aid_len))
1053 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PAD_MODE);
1055 switch (p->data_type) {
1056 case OSSL_PARAM_INTEGER:
1057 if (!OSSL_PARAM_set_int(p, prsactx->pad_mode))
1060 case OSSL_PARAM_UTF8_STRING:
1063 const char *word = NULL;
1065 for (i = 0; padding_item[i].id != 0; i++) {
1066 if (prsactx->pad_mode == (int)padding_item[i].id) {
1067 word = padding_item[i].ptr;
1073 if (!OSSL_PARAM_set_utf8_string(p, word))
1076 ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
1084 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST);
1085 if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mdname))
1088 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST);
1089 if (p != NULL && !OSSL_PARAM_set_utf8_string(p, prsactx->mgf1_mdname))
1092 p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN);
1094 if (p->data_type == OSSL_PARAM_INTEGER) {
1095 if (!OSSL_PARAM_set_int(p, prsactx->saltlen))
1097 } else if (p->data_type == OSSL_PARAM_UTF8_STRING) {
1098 const char *value = NULL;
1100 switch (prsactx->saltlen) {
1101 case RSA_PSS_SALTLEN_DIGEST:
1102 value = OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST;
1104 case RSA_PSS_SALTLEN_MAX:
1105 value = OSSL_PKEY_RSA_PSS_SALT_LEN_MAX;
1107 case RSA_PSS_SALTLEN_AUTO:
1108 value = OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO;
1112 int len = BIO_snprintf(p->data, p->data_size, "%d",
1117 p->return_size = len;
1122 && !OSSL_PARAM_set_utf8_string(p, value))
1130 static const OSSL_PARAM known_gettable_ctx_params[] = {
1131 OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0),
1132 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1133 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
1134 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1135 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1139 static const OSSL_PARAM *rsa_gettable_ctx_params(ossl_unused void *vprsactx,
1140 ossl_unused void *provctx)
1142 return known_gettable_ctx_params;
1145 static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
1147 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1148 const OSSL_PARAM *p;
1151 char mdname[OSSL_MAX_NAME_SIZE] = "", *pmdname = NULL;
1152 char mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmdprops = NULL;
1153 char mgf1mdname[OSSL_MAX_NAME_SIZE] = "", *pmgf1mdname = NULL;
1154 char mgf1mdprops[OSSL_MAX_PROPQUERY_SIZE] = "", *pmgf1mdprops = NULL;
1156 if (prsactx == NULL)
1161 pad_mode = prsactx->pad_mode;
1162 saltlen = prsactx->saltlen;
1164 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST);
1166 const OSSL_PARAM *propsp =
1167 OSSL_PARAM_locate_const(params,
1168 OSSL_SIGNATURE_PARAM_PROPERTIES);
1171 if (!OSSL_PARAM_get_utf8_string(p, &pmdname, sizeof(mdname)))
1174 if (propsp != NULL) {
1176 if (!OSSL_PARAM_get_utf8_string(propsp,
1177 &pmdprops, sizeof(mdprops)))
1182 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PAD_MODE);
1184 const char *err_extra_text = NULL;
1186 switch (p->data_type) {
1187 case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */
1188 if (!OSSL_PARAM_get_int(p, &pad_mode))
1191 case OSSL_PARAM_UTF8_STRING:
1195 if (p->data == NULL)
1198 for (i = 0; padding_item[i].id != 0; i++) {
1199 if (strcmp(p->data, padding_item[i].ptr) == 0) {
1200 pad_mode = padding_item[i].id;
1211 case RSA_PKCS1_OAEP_PADDING:
1213 * OAEP padding is for asymmetric cipher only so is not compatible
1214 * with signature use.
1216 err_extra_text = "OAEP padding not allowed for signing / verifying";
1218 case RSA_PKCS1_PSS_PADDING:
1219 if ((prsactx->operation
1220 & (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY)) == 0) {
1222 "PSS padding only allowed for sign and verify operations";
1226 case RSA_PKCS1_PADDING:
1227 err_extra_text = "PKCS#1 padding not allowed with RSA-PSS";
1229 case RSA_NO_PADDING:
1230 err_extra_text = "No padding not allowed with RSA-PSS";
1232 case RSA_X931_PADDING:
1233 err_extra_text = "X.931 padding not allowed with RSA-PSS";
1235 if (RSA_test_flags(prsactx->rsa,
1236 RSA_FLAG_TYPE_MASK) == RSA_FLAG_TYPE_RSA)
1241 if (err_extra_text == NULL)
1242 ERR_raise(ERR_LIB_PROV,
1243 PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
1245 ERR_raise_data(ERR_LIB_PROV,
1246 PROV_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE,
1252 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_PSS_SALTLEN);
1254 if (pad_mode != RSA_PKCS1_PSS_PADDING) {
1255 ERR_raise_data(ERR_LIB_PROV, PROV_R_NOT_SUPPORTED,
1256 "PSS saltlen can only be specified if "
1257 "PSS padding has been specified first");
1261 switch (p->data_type) {
1262 case OSSL_PARAM_INTEGER: /* Support for legacy pad mode number */
1263 if (!OSSL_PARAM_get_int(p, &saltlen))
1266 case OSSL_PARAM_UTF8_STRING:
1267 if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST) == 0)
1268 saltlen = RSA_PSS_SALTLEN_DIGEST;
1269 else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_MAX) == 0)
1270 saltlen = RSA_PSS_SALTLEN_MAX;
1271 else if (strcmp(p->data, OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO) == 0)
1272 saltlen = RSA_PSS_SALTLEN_AUTO;
1274 saltlen = atoi(p->data);
1281 * RSA_PSS_SALTLEN_MAX seems curiously named in this check.
1282 * Contrary to what it's name suggests, it's the currently
1283 * lowest saltlen number possible.
1285 if (saltlen < RSA_PSS_SALTLEN_MAX) {
1286 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH);
1290 if (rsa_pss_restricted(prsactx)) {
1292 case RSA_PSS_SALTLEN_AUTO:
1293 if (prsactx->operation == EVP_PKEY_OP_VERIFY) {
1294 ERR_raise_data(ERR_LIB_PROV, PROV_R_INVALID_SALT_LENGTH,
1295 "Cannot use autodetected salt length");
1299 case RSA_PSS_SALTLEN_DIGEST:
1300 if (prsactx->min_saltlen > EVP_MD_get_size(prsactx->md)) {
1301 ERR_raise_data(ERR_LIB_PROV,
1302 PROV_R_PSS_SALTLEN_TOO_SMALL,
1303 "Should be more than %d, but would be "
1304 "set to match digest size (%d)",
1305 prsactx->min_saltlen,
1306 EVP_MD_get_size(prsactx->md));
1311 if (saltlen >= 0 && saltlen < prsactx->min_saltlen) {
1312 ERR_raise_data(ERR_LIB_PROV,
1313 PROV_R_PSS_SALTLEN_TOO_SMALL,
1314 "Should be more than %d, "
1315 "but would be set to %d",
1316 prsactx->min_saltlen, saltlen);
1323 p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_MGF1_DIGEST);
1325 const OSSL_PARAM *propsp =
1326 OSSL_PARAM_locate_const(params,
1327 OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES);
1329 pmgf1mdname = mgf1mdname;
1330 if (!OSSL_PARAM_get_utf8_string(p, &pmgf1mdname, sizeof(mgf1mdname)))
1333 if (propsp != NULL) {
1334 pmgf1mdprops = mgf1mdprops;
1335 if (!OSSL_PARAM_get_utf8_string(propsp,
1336 &pmgf1mdprops, sizeof(mgf1mdprops)))
1340 if (pad_mode != RSA_PKCS1_PSS_PADDING) {
1341 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_MGF1_MD);
1346 prsactx->saltlen = saltlen;
1347 prsactx->pad_mode = pad_mode;
1349 if (prsactx->md == NULL && pmdname == NULL
1350 && pad_mode == RSA_PKCS1_PSS_PADDING)
1351 pmdname = RSA_DEFAULT_DIGEST_NAME;
1353 if (pmgf1mdname != NULL
1354 && !rsa_setup_mgf1_md(prsactx, pmgf1mdname, pmgf1mdprops))
1357 if (pmdname != NULL) {
1358 if (!rsa_setup_md(prsactx, pmdname, pmdprops))
1361 if (!rsa_check_padding(prsactx, NULL, NULL, prsactx->mdnid))
1367 static const OSSL_PARAM settable_ctx_params[] = {
1368 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
1369 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PROPERTIES, NULL, 0),
1370 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1371 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1372 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0),
1373 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1377 static const OSSL_PARAM settable_ctx_params_no_digest[] = {
1378 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PAD_MODE, NULL, 0),
1379 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_DIGEST, NULL, 0),
1380 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES, NULL, 0),
1381 OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_PSS_SALTLEN, NULL, 0),
1385 static const OSSL_PARAM *rsa_settable_ctx_params(void *vprsactx,
1386 ossl_unused void *provctx)
1388 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1390 if (prsactx != NULL && !prsactx->flag_allow_md)
1391 return settable_ctx_params_no_digest;
1392 return settable_ctx_params;
1395 static int rsa_get_ctx_md_params(void *vprsactx, OSSL_PARAM *params)
1397 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1399 if (prsactx->mdctx == NULL)
1402 return EVP_MD_CTX_get_params(prsactx->mdctx, params);
1405 static const OSSL_PARAM *rsa_gettable_ctx_md_params(void *vprsactx)
1407 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1409 if (prsactx->md == NULL)
1412 return EVP_MD_gettable_ctx_params(prsactx->md);
1415 static int rsa_set_ctx_md_params(void *vprsactx, const OSSL_PARAM params[])
1417 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1419 if (prsactx->mdctx == NULL)
1422 return EVP_MD_CTX_set_params(prsactx->mdctx, params);
1425 static const OSSL_PARAM *rsa_settable_ctx_md_params(void *vprsactx)
1427 PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
1429 if (prsactx->md == NULL)
1432 return EVP_MD_settable_ctx_params(prsactx->md);
1435 const OSSL_DISPATCH ossl_rsa_signature_functions[] = {
1436 { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))rsa_newctx },
1437 { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))rsa_sign_init },
1438 { OSSL_FUNC_SIGNATURE_SIGN, (void (*)(void))rsa_sign },
1439 { OSSL_FUNC_SIGNATURE_VERIFY_INIT, (void (*)(void))rsa_verify_init },
1440 { OSSL_FUNC_SIGNATURE_VERIFY, (void (*)(void))rsa_verify },
1441 { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER_INIT,
1442 (void (*)(void))rsa_verify_recover_init },
1443 { OSSL_FUNC_SIGNATURE_VERIFY_RECOVER,
1444 (void (*)(void))rsa_verify_recover },
1445 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
1446 (void (*)(void))rsa_digest_sign_init },
1447 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE,
1448 (void (*)(void))rsa_digest_signverify_update },
1449 { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL,
1450 (void (*)(void))rsa_digest_sign_final },
1451 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
1452 (void (*)(void))rsa_digest_verify_init },
1453 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE,
1454 (void (*)(void))rsa_digest_signverify_update },
1455 { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL,
1456 (void (*)(void))rsa_digest_verify_final },
1457 { OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))rsa_freectx },
1458 { OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))rsa_dupctx },
1459 { OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))rsa_get_ctx_params },
1460 { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
1461 (void (*)(void))rsa_gettable_ctx_params },
1462 { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))rsa_set_ctx_params },
1463 { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
1464 (void (*)(void))rsa_settable_ctx_params },
1465 { OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS,
1466 (void (*)(void))rsa_get_ctx_md_params },
1467 { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS,
1468 (void (*)(void))rsa_gettable_ctx_md_params },
1469 { OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS,
1470 (void (*)(void))rsa_set_ctx_md_params },
1471 { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
1472 (void (*)(void))rsa_settable_ctx_md_params },