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[thirdparty/openssl.git] / crypto / evp / pmeth_lib.c
1 /*
2 * Copyright 2006-2020 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 /*
11 * Low level key APIs (DH etc) are deprecated for public use, but still ok for
12 * internal use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include <stdlib.h>
18 #include <openssl/engine.h>
19 #include <openssl/evp.h>
20 #include <openssl/x509v3.h>
21 #include <openssl/core_names.h>
22 #include <openssl/dh.h>
23 #include <openssl/rsa.h>
24 #include <openssl/kdf.h>
25 #include "internal/cryptlib.h"
26 #include "crypto/asn1.h"
27 #include "crypto/evp.h"
28 #include "crypto/dh.h"
29 #include "crypto/ec.h"
30 #include "internal/ffc.h"
31 #include "internal/numbers.h"
32 #include "internal/provider.h"
33 #include "evp_local.h"
34
35 #ifndef FIPS_MODULE
36
37 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
38 int keytype, int optype,
39 int cmd, const char *name,
40 const void *data, size_t data_len);
41 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
42 int cmd, const char *name);
43 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
44
45 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
46 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
47
48 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
49
50 /* This array needs to be in order of NIDs */
51 static pmeth_fn standard_methods[] = {
52 ossl_rsa_pkey_method,
53 # ifndef OPENSSL_NO_DH
54 dh_pkey_method,
55 # endif
56 # ifndef OPENSSL_NO_DSA
57 dsa_pkey_method,
58 # endif
59 # ifndef OPENSSL_NO_EC
60 ec_pkey_method,
61 # endif
62 ossl_rsa_pss_pkey_method,
63 # ifndef OPENSSL_NO_DH
64 dhx_pkey_method,
65 # endif
66 # ifndef OPENSSL_NO_EC
67 ecx25519_pkey_method,
68 ecx448_pkey_method,
69 # endif
70 # ifndef OPENSSL_NO_EC
71 ed25519_pkey_method,
72 ed448_pkey_method,
73 # endif
74 };
75
76 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
77
78 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
79 {
80 return ((*a)->pkey_id - ((**b)())->pkey_id);
81 }
82
83 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
84
85 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
86 const EVP_PKEY_METHOD *const *b)
87 {
88 return ((*a)->pkey_id - (*b)->pkey_id);
89 }
90
91 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
92 {
93 pmeth_fn *ret;
94 EVP_PKEY_METHOD tmp;
95 const EVP_PKEY_METHOD *t = &tmp;
96
97 tmp.pkey_id = type;
98 if (app_pkey_methods) {
99 int idx;
100 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
101 if (idx >= 0)
102 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
103 }
104 ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
105 sizeof(standard_methods) /
106 sizeof(pmeth_fn));
107 if (ret == NULL || *ret == NULL)
108 return NULL;
109 return (**ret)();
110 }
111
112 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
113 {
114 EVP_PKEY_METHOD *pmeth;
115
116 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
117 if (pmeth == NULL) {
118 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
119 return NULL;
120 }
121
122 pmeth->pkey_id = id;
123 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
124 return pmeth;
125 }
126
127 /* Three possible states: */
128 # define EVP_PKEY_STATE_UNKNOWN 0
129 # define EVP_PKEY_STATE_LEGACY 1
130 # define EVP_PKEY_STATE_PROVIDER 2
131
132 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
133 {
134 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
135 return EVP_PKEY_STATE_UNKNOWN;
136
137 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
138 && ctx->op.kex.exchprovctx != NULL)
139 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
140 && ctx->op.sig.sigprovctx != NULL)
141 || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
142 && ctx->op.ciph.ciphprovctx != NULL)
143 || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
144 && ctx->op.keymgmt.genctx != NULL)
145 || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
146 && ctx->op.encap.kemprovctx != NULL))
147 return EVP_PKEY_STATE_PROVIDER;
148
149 return EVP_PKEY_STATE_LEGACY;
150 }
151
152 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
153 void *arg)
154 {
155 int *type = arg;
156
157 if (*type == NID_undef)
158 *type = evp_pkey_name2type(keytype);
159 }
160
161 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
162 {
163 int type = NID_undef;
164
165 EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
166 &type);
167 return type;
168 }
169 #endif /* FIPS_MODULE */
170
171 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
172 EVP_PKEY *pkey, ENGINE *e,
173 const char *keytype, const char *propquery,
174 int id)
175
176 {
177 EVP_PKEY_CTX *ret = NULL;
178 const EVP_PKEY_METHOD *pmeth = NULL;
179 EVP_KEYMGMT *keymgmt = NULL;
180
181 /*
182 * If the given |pkey| is provided, we extract the keytype from its
183 * keymgmt and skip over the legacy code.
184 */
185 if (pkey != NULL && evp_pkey_is_provided(pkey)) {
186 /* If we have an engine, something went wrong somewhere... */
187 if (!ossl_assert(e == NULL))
188 return NULL;
189 keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
190 goto common;
191 }
192
193 #ifndef FIPS_MODULE
194 /*
195 * TODO(3.0) This legacy code section should be removed when we stop
196 * supporting engines
197 */
198 /* BEGIN legacy */
199 if (id == -1) {
200 if (pkey != NULL)
201 id = pkey->type;
202 else if (keytype != NULL)
203 id = evp_pkey_name2type(keytype);
204 if (id == NID_undef)
205 id = -1;
206 }
207 /* If no ID was found here, we can only resort to find a keymgmt */
208 if (id == -1)
209 goto common;
210
211 /*
212 * Here, we extract what information we can for the purpose of
213 * supporting usage with implementations from providers, to make
214 * for a smooth transition from legacy stuff to provider based stuff.
215 *
216 * If an engine is given, this is entirely legacy, and we should not
217 * pretend anything else, so we only set the name when no engine is
218 * given. If both are already given, someone made a mistake, and
219 * since that can only happen internally, it's safe to make an
220 * assertion.
221 */
222 if (!ossl_assert(e == NULL || keytype == NULL))
223 return NULL;
224 if (e == NULL)
225 keytype = OBJ_nid2sn(id);
226
227 # ifndef OPENSSL_NO_ENGINE
228 if (e == NULL && pkey != NULL)
229 e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
230 /* Try to find an ENGINE which implements this method */
231 if (e) {
232 if (!ENGINE_init(e)) {
233 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
234 return NULL;
235 }
236 } else {
237 e = ENGINE_get_pkey_meth_engine(id);
238 }
239
240 /*
241 * If an ENGINE handled this method look it up. Otherwise use internal
242 * tables.
243 */
244 if (e != NULL)
245 pmeth = ENGINE_get_pkey_meth(e, id);
246 else
247 # endif
248 pmeth = EVP_PKEY_meth_find(id);
249
250 /* END legacy */
251 #endif /* FIPS_MODULE */
252 common:
253 /*
254 * If there's no engine and there's a name, we try fetching a provider
255 * implementation.
256 */
257 if (e == NULL && keytype != NULL) {
258 keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
259 if (keymgmt == NULL)
260 return NULL; /* EVP_KEYMGMT_fetch() recorded an error */
261
262 #ifndef FIPS_MODULE
263 /*
264 * Chase down the legacy NID, as that might be needed for diverse
265 * purposes, such as ensure that EVP_PKEY_type() can return sensible
266 * values, or that there's a better chance to "downgrade" a key when
267 * needed. We go through all keymgmt names, because the keytype
268 * that's passed to this function doesn't necessarily translate
269 * directly.
270 * TODO: Remove this when #legacy keys are gone.
271 */
272 if (keymgmt != NULL) {
273 int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
274
275 if (tmp_id != NID_undef) {
276 if (id == -1) {
277 id = tmp_id;
278 } else {
279 /*
280 * It really really shouldn't differ. If it still does,
281 * something is very wrong.
282 */
283 if (!ossl_assert(id == tmp_id)) {
284 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
285 EVP_KEYMGMT_free(keymgmt);
286 return NULL;
287 }
288 }
289 }
290 }
291 #endif
292 }
293
294 if (pmeth == NULL && keymgmt == NULL) {
295 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
296 } else {
297 ret = OPENSSL_zalloc(sizeof(*ret));
298 if (ret == NULL)
299 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
300 }
301
302 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
303 if ((ret == NULL || pmeth == NULL) && e != NULL)
304 ENGINE_finish(e);
305 #endif
306
307 if (ret == NULL) {
308 EVP_KEYMGMT_free(keymgmt);
309 return NULL;
310 }
311 if (propquery != NULL) {
312 ret->propquery = OPENSSL_strdup(propquery);
313 if (ret->propquery == NULL) {
314 EVP_KEYMGMT_free(keymgmt);
315 return NULL;
316 }
317 }
318 ret->libctx = libctx;
319 ret->keytype = keytype;
320 ret->keymgmt = keymgmt;
321 ret->legacy_keytype = id; /* TODO: Remove when #legacy key are gone */
322 ret->engine = e;
323 ret->pmeth = pmeth;
324 ret->operation = EVP_PKEY_OP_UNDEFINED;
325 ret->pkey = pkey;
326 if (pkey != NULL)
327 EVP_PKEY_up_ref(pkey);
328
329 if (pmeth != NULL && pmeth->init != NULL) {
330 if (pmeth->init(ret) <= 0) {
331 ret->pmeth = NULL;
332 EVP_PKEY_CTX_free(ret);
333 return NULL;
334 }
335 }
336
337 return ret;
338 }
339
340 /*- All methods below can also be used in FIPS_MODULE */
341
342 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
343 const char *name,
344 const char *propquery)
345 {
346 return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
347 }
348
349 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
350 const char *propquery)
351 {
352 return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
353 }
354
355 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
356 {
357 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
358 if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
359 ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
360 EVP_SIGNATURE_free(ctx->op.sig.signature);
361 ctx->op.sig.sigprovctx = NULL;
362 ctx->op.sig.signature = NULL;
363 } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
364 if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
365 ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
366 EVP_KEYEXCH_free(ctx->op.kex.exchange);
367 ctx->op.kex.exchprovctx = NULL;
368 ctx->op.kex.exchange = NULL;
369 } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
370 if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
371 ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
372 EVP_KEM_free(ctx->op.encap.kem);
373 ctx->op.encap.kemprovctx = NULL;
374 ctx->op.encap.kem = NULL;
375 }
376 else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
377 if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
378 ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
379 EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
380 ctx->op.ciph.ciphprovctx = NULL;
381 ctx->op.ciph.cipher = NULL;
382 } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
383 if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
384 evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
385 }
386 }
387
388 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
389 {
390 if (ctx == NULL)
391 return;
392 if (ctx->pmeth && ctx->pmeth->cleanup)
393 ctx->pmeth->cleanup(ctx);
394
395 evp_pkey_ctx_free_old_ops(ctx);
396 #ifndef FIPS_MODULE
397 evp_pkey_ctx_free_all_cached_data(ctx);
398 #endif
399 EVP_KEYMGMT_free(ctx->keymgmt);
400
401 OPENSSL_free(ctx->propquery);
402 EVP_PKEY_free(ctx->pkey);
403 EVP_PKEY_free(ctx->peerkey);
404 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
405 ENGINE_finish(ctx->engine);
406 #endif
407 BN_free(ctx->rsa_pubexp);
408 OPENSSL_free(ctx);
409 }
410
411 #ifndef FIPS_MODULE
412
413 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
414 const EVP_PKEY_METHOD *meth)
415 {
416 if (ppkey_id)
417 *ppkey_id = meth->pkey_id;
418 if (pflags)
419 *pflags = meth->flags;
420 }
421
422 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
423 {
424 int pkey_id = dst->pkey_id;
425 int flags = dst->flags;
426
427 *dst = *src;
428
429 /* We only copy the function pointers so restore the other values */
430 dst->pkey_id = pkey_id;
431 dst->flags = flags;
432 }
433
434 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
435 {
436 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
437 OPENSSL_free(pmeth);
438 }
439
440 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
441 {
442 return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
443 }
444
445 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
446 {
447 return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
448 }
449
450 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
451 {
452 EVP_PKEY_CTX *rctx;
453
454 # ifndef OPENSSL_NO_ENGINE
455 /* Make sure it's safe to copy a pkey context using an ENGINE */
456 if (pctx->engine && !ENGINE_init(pctx->engine)) {
457 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
458 return 0;
459 }
460 # endif
461 rctx = OPENSSL_zalloc(sizeof(*rctx));
462 if (rctx == NULL) {
463 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
464 return NULL;
465 }
466
467 if (pctx->pkey != NULL)
468 EVP_PKEY_up_ref(pctx->pkey);
469 rctx->pkey = pctx->pkey;
470 rctx->operation = pctx->operation;
471 rctx->libctx = pctx->libctx;
472 rctx->keytype = pctx->keytype;
473 rctx->propquery = NULL;
474 if (pctx->propquery != NULL) {
475 rctx->propquery = OPENSSL_strdup(pctx->propquery);
476 if (rctx->propquery == NULL)
477 goto err;
478 }
479 rctx->legacy_keytype = pctx->legacy_keytype;
480
481 if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
482 if (pctx->op.kex.exchange != NULL) {
483 rctx->op.kex.exchange = pctx->op.kex.exchange;
484 if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
485 goto err;
486 }
487 if (pctx->op.kex.exchprovctx != NULL) {
488 if (!ossl_assert(pctx->op.kex.exchange != NULL))
489 goto err;
490 rctx->op.kex.exchprovctx
491 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
492 if (rctx->op.kex.exchprovctx == NULL) {
493 EVP_KEYEXCH_free(rctx->op.kex.exchange);
494 goto err;
495 }
496 return rctx;
497 }
498 } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
499 if (pctx->op.sig.signature != NULL) {
500 rctx->op.sig.signature = pctx->op.sig.signature;
501 if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
502 goto err;
503 }
504 if (pctx->op.sig.sigprovctx != NULL) {
505 if (!ossl_assert(pctx->op.sig.signature != NULL))
506 goto err;
507 rctx->op.sig.sigprovctx
508 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
509 if (rctx->op.sig.sigprovctx == NULL) {
510 EVP_SIGNATURE_free(rctx->op.sig.signature);
511 goto err;
512 }
513 return rctx;
514 }
515 } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
516 if (pctx->op.ciph.cipher != NULL) {
517 rctx->op.ciph.cipher = pctx->op.ciph.cipher;
518 if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
519 goto err;
520 }
521 if (pctx->op.ciph.ciphprovctx != NULL) {
522 if (!ossl_assert(pctx->op.ciph.cipher != NULL))
523 goto err;
524 rctx->op.ciph.ciphprovctx
525 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
526 if (rctx->op.ciph.ciphprovctx == NULL) {
527 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
528 goto err;
529 }
530 return rctx;
531 }
532 } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
533 if (pctx->op.encap.kem != NULL) {
534 rctx->op.encap.kem = pctx->op.encap.kem;
535 if (!EVP_KEM_up_ref(rctx->op.encap.kem))
536 goto err;
537 }
538 if (pctx->op.encap.kemprovctx != NULL) {
539 if (!ossl_assert(pctx->op.encap.kem != NULL))
540 goto err;
541 rctx->op.encap.kemprovctx
542 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
543 if (rctx->op.encap.kemprovctx == NULL) {
544 EVP_KEM_free(rctx->op.encap.kem);
545 goto err;
546 }
547 return rctx;
548 }
549 } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
550 /* Not supported - This would need a gen_dupctx() to work */
551 goto err;
552 }
553
554 rctx->pmeth = pctx->pmeth;
555 # ifndef OPENSSL_NO_ENGINE
556 rctx->engine = pctx->engine;
557 # endif
558
559 if (pctx->peerkey != NULL)
560 EVP_PKEY_up_ref(pctx->peerkey);
561 rctx->peerkey = pctx->peerkey;
562
563 if (pctx->pmeth == NULL) {
564 if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
565 EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
566 void *provkey;
567
568 provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
569 &tmp_keymgmt, pctx->propquery);
570 if (provkey == NULL)
571 goto err;
572 if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
573 goto err;
574 EVP_KEYMGMT_free(rctx->keymgmt);
575 rctx->keymgmt = tmp_keymgmt;
576 return rctx;
577 }
578 } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
579 return rctx;
580 }
581 err:
582 rctx->pmeth = NULL;
583 EVP_PKEY_CTX_free(rctx);
584 return NULL;
585 }
586
587 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
588 {
589 if (app_pkey_methods == NULL) {
590 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
591 if (app_pkey_methods == NULL){
592 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
593 return 0;
594 }
595 }
596 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
597 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
598 return 0;
599 }
600 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
601 return 1;
602 }
603
604 void evp_app_cleanup_int(void)
605 {
606 if (app_pkey_methods != NULL)
607 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
608 }
609
610 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
611 {
612 const EVP_PKEY_METHOD *ret;
613
614 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
615
616 return ret == NULL ? 0 : 1;
617 }
618
619 size_t EVP_PKEY_meth_get_count(void)
620 {
621 size_t rv = OSSL_NELEM(standard_methods);
622
623 if (app_pkey_methods)
624 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
625 return rv;
626 }
627
628 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
629 {
630 if (idx < OSSL_NELEM(standard_methods))
631 return (standard_methods[idx])();
632 if (app_pkey_methods == NULL)
633 return NULL;
634 idx -= OSSL_NELEM(standard_methods);
635 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
636 return NULL;
637 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
638 }
639 #endif
640
641 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
642 {
643 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
644 && ctx->op.kex.exchprovctx != NULL
645 && ctx->op.kex.exchange != NULL
646 && ctx->op.kex.exchange->set_ctx_params != NULL)
647 return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
648 params);
649 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
650 && ctx->op.sig.sigprovctx != NULL
651 && ctx->op.sig.signature != NULL
652 && ctx->op.sig.signature->set_ctx_params != NULL)
653 return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
654 params);
655 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
656 && ctx->op.ciph.ciphprovctx != NULL
657 && ctx->op.ciph.cipher != NULL
658 && ctx->op.ciph.cipher->set_ctx_params != NULL)
659 return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
660 params);
661 if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
662 && ctx->op.keymgmt.genctx != NULL
663 && ctx->keymgmt != NULL
664 && ctx->keymgmt->gen_set_params != NULL)
665 return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
666 params);
667 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
668 && ctx->op.encap.kemprovctx != NULL
669 && ctx->op.encap.kem != NULL
670 && ctx->op.encap.kem->set_ctx_params != NULL)
671 return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
672 params);
673 return 0;
674 }
675
676 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
677 {
678 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
679 && ctx->op.kex.exchprovctx != NULL
680 && ctx->op.kex.exchange != NULL
681 && ctx->op.kex.exchange->get_ctx_params != NULL)
682 return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
683 params);
684 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
685 && ctx->op.sig.sigprovctx != NULL
686 && ctx->op.sig.signature != NULL
687 && ctx->op.sig.signature->get_ctx_params != NULL)
688 return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
689 params);
690 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
691 && ctx->op.ciph.ciphprovctx != NULL
692 && ctx->op.ciph.cipher != NULL
693 && ctx->op.ciph.cipher->get_ctx_params != NULL)
694 return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
695 params);
696 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
697 && ctx->op.encap.kemprovctx != NULL
698 && ctx->op.encap.kem != NULL
699 && ctx->op.encap.kem->get_ctx_params != NULL)
700 return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
701 params);
702 return 0;
703 }
704
705 #ifndef FIPS_MODULE
706 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
707 {
708 void *provctx;
709
710 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
711 && ctx->op.kex.exchange != NULL
712 && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
713 provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
714 return ctx->op.kex.exchange->gettable_ctx_params(provctx);
715 }
716 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
717 && ctx->op.sig.signature != NULL
718 && ctx->op.sig.signature->gettable_ctx_params != NULL) {
719 provctx = ossl_provider_ctx(
720 EVP_SIGNATURE_provider(ctx->op.sig.signature));
721 return ctx->op.sig.signature->gettable_ctx_params(provctx);
722 }
723 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
724 && ctx->op.ciph.cipher != NULL
725 && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
726 provctx = ossl_provider_ctx(
727 EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
728 return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
729 }
730 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
731 && ctx->op.encap.kem != NULL
732 && ctx->op.encap.kem->gettable_ctx_params != NULL) {
733 provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
734 return ctx->op.encap.kem->gettable_ctx_params(provctx);
735 }
736 return NULL;
737 }
738
739 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
740 {
741 void *provctx;
742
743 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
744 && ctx->op.kex.exchange != NULL
745 && ctx->op.kex.exchange->settable_ctx_params != NULL) {
746 provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
747 return ctx->op.kex.exchange->settable_ctx_params(provctx);
748 }
749 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
750 && ctx->op.sig.signature != NULL
751 && ctx->op.sig.signature->settable_ctx_params != NULL) {
752 provctx = ossl_provider_ctx(
753 EVP_SIGNATURE_provider(ctx->op.sig.signature));
754 return ctx->op.sig.signature->settable_ctx_params(provctx);
755 }
756 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
757 && ctx->op.ciph.cipher != NULL
758 && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
759 provctx = ossl_provider_ctx(
760 EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
761 return ctx->op.ciph.cipher->settable_ctx_params(provctx);
762 }
763 if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
764 && ctx->keymgmt != NULL)
765 return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
766 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
767 && ctx->op.encap.kem != NULL
768 && ctx->op.encap.kem->settable_ctx_params != NULL) {
769 provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
770 return ctx->op.encap.kem->settable_ctx_params(provctx);
771 }
772 return NULL;
773 }
774
775 /*
776 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
777 *
778 * Return 1 on success, 0 or negative for errors.
779 *
780 * In particular they return -2 if any of the params is not supported.
781 *
782 * They are not available in FIPS_MODULE as they depend on
783 * - EVP_PKEY_CTX_{get,set}_params()
784 * - EVP_PKEY_CTX_{gettable,settable}_params()
785 *
786 */
787 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
788 {
789 const OSSL_PARAM *p;
790
791 if (ctx == NULL || params == NULL)
792 return 0;
793
794 for (p = params; p->key != NULL; p++) {
795 /* Check the ctx actually understands this parameter */
796 if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
797 p->key) == NULL )
798 return -2;
799 }
800
801 return EVP_PKEY_CTX_set_params(ctx, params);
802 }
803
804 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
805 {
806 const OSSL_PARAM *p;
807
808 if (ctx == NULL || params == NULL)
809 return 0;
810
811 for (p = params; p->key != NULL; p++ ) {
812 /* Check the ctx actually understands this parameter */
813 if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
814 p->key) == NULL )
815 return -2;
816 }
817
818 return EVP_PKEY_CTX_get_params(ctx, params);
819 }
820
821 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
822 {
823 OSSL_PARAM sig_md_params[2], *p = sig_md_params;
824 /* 80 should be big enough */
825 char name[80] = "";
826 const EVP_MD *tmp;
827
828 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
829 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
830 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
831 return -2;
832 }
833
834 /* TODO(3.0): Remove this eventually when no more legacy */
835 if (ctx->op.sig.sigprovctx == NULL)
836 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
837 EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
838
839 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
840 name,
841 sizeof(name));
842 *p = OSSL_PARAM_construct_end();
843
844 if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
845 return 0;
846
847 tmp = evp_get_digestbyname_ex(ctx->libctx, name);
848 if (tmp == NULL)
849 return 0;
850
851 *md = tmp;
852
853 return 1;
854 }
855
856 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
857 int fallback, const char *param, int op,
858 int ctrl)
859 {
860 OSSL_PARAM md_params[2], *p = md_params;
861 const char *name;
862
863 if (ctx == NULL || (ctx->operation & op) == 0) {
864 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
865 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
866 return -2;
867 }
868
869 /* TODO(3.0): Remove this eventually when no more legacy */
870 if (fallback)
871 return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
872
873 if (md == NULL) {
874 name = "";
875 } else {
876 name = EVP_MD_name(md);
877 }
878
879 *p++ = OSSL_PARAM_construct_utf8_string(param,
880 /*
881 * Cast away the const. This is read
882 * only so should be safe
883 */
884 (char *)name, 0);
885 *p = OSSL_PARAM_construct_end();
886
887 return EVP_PKEY_CTX_set_params(ctx, md_params);
888 }
889
890 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
891 {
892 return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
893 OSSL_SIGNATURE_PARAM_DIGEST,
894 EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
895 }
896
897 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
898 {
899 return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
900 OSSL_KDF_PARAM_DIGEST,
901 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
902 }
903
904 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
905 const char *param, int op, int ctrl,
906 const unsigned char *data,
907 int datalen)
908 {
909 OSSL_PARAM octet_string_params[2], *p = octet_string_params;
910
911 if (ctx == NULL || (ctx->operation & op) == 0) {
912 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
913 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
914 return -2;
915 }
916
917 /* TODO(3.0): Remove this eventually when no more legacy */
918 if (fallback)
919 return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
920
921 if (datalen < 0) {
922 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
923 return 0;
924 }
925
926 *p++ = OSSL_PARAM_construct_octet_string(param,
927 /*
928 * Cast away the const. This is read
929 * only so should be safe
930 */
931 (unsigned char *)data,
932 (size_t)datalen);
933 *p = OSSL_PARAM_construct_end();
934
935 return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
936 }
937
938 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
939 const unsigned char *sec, int seclen)
940 {
941 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
942 OSSL_KDF_PARAM_SECRET,
943 EVP_PKEY_OP_DERIVE,
944 EVP_PKEY_CTRL_TLS_SECRET,
945 sec, seclen);
946 }
947
948 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
949 const unsigned char *seed, int seedlen)
950 {
951 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
952 OSSL_KDF_PARAM_SEED,
953 EVP_PKEY_OP_DERIVE,
954 EVP_PKEY_CTRL_TLS_SEED,
955 seed, seedlen);
956 }
957
958 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
959 {
960 return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
961 OSSL_KDF_PARAM_DIGEST,
962 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
963 }
964
965 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
966 const unsigned char *salt, int saltlen)
967 {
968 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
969 OSSL_KDF_PARAM_SALT,
970 EVP_PKEY_OP_DERIVE,
971 EVP_PKEY_CTRL_HKDF_SALT,
972 salt, saltlen);
973 }
974
975 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
976 const unsigned char *key, int keylen)
977 {
978 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
979 OSSL_KDF_PARAM_KEY,
980 EVP_PKEY_OP_DERIVE,
981 EVP_PKEY_CTRL_HKDF_KEY,
982 key, keylen);
983 }
984
985 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
986 const unsigned char *info, int infolen)
987 {
988 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
989 OSSL_KDF_PARAM_INFO,
990 EVP_PKEY_OP_DERIVE,
991 EVP_PKEY_CTRL_HKDF_INFO,
992 info, infolen);
993 }
994
995 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
996 {
997 OSSL_PARAM int_params[2], *p = int_params;
998
999 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1000 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1001 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1002 return -2;
1003 }
1004
1005 /* TODO(3.0): Remove this eventually when no more legacy */
1006 if (ctx->op.kex.exchprovctx == NULL)
1007 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1008 EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1009
1010
1011 if (mode < 0) {
1012 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1013 return 0;
1014 }
1015
1016 *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1017 *p = OSSL_PARAM_construct_end();
1018
1019 return EVP_PKEY_CTX_set_params(ctx, int_params);
1020 }
1021
1022 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1023 int passlen)
1024 {
1025 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1026 OSSL_KDF_PARAM_PASSWORD,
1027 EVP_PKEY_OP_DERIVE,
1028 EVP_PKEY_CTRL_PASS,
1029 (const unsigned char *)pass, passlen);
1030 }
1031
1032 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1033 const unsigned char *salt, int saltlen)
1034 {
1035 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1036 OSSL_KDF_PARAM_SALT,
1037 EVP_PKEY_OP_DERIVE,
1038 EVP_PKEY_CTRL_SCRYPT_SALT,
1039 salt, saltlen);
1040 }
1041
1042 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1043 int op, int ctrl, uint64_t val)
1044 {
1045 OSSL_PARAM uint64_params[2], *p = uint64_params;
1046
1047 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1048 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1049 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1050 return -2;
1051 }
1052
1053 /* TODO(3.0): Remove this eventually when no more legacy */
1054 if (ctx->op.kex.exchprovctx == NULL)
1055 return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1056
1057 *p++ = OSSL_PARAM_construct_uint64(param, &val);
1058 *p = OSSL_PARAM_construct_end();
1059
1060 return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1061 }
1062
1063 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1064 {
1065 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1066 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1067 n);
1068 }
1069
1070 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1071 {
1072 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1073 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1074 r);
1075 }
1076
1077 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1078 {
1079 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1080 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1081 p);
1082 }
1083
1084 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1085 uint64_t maxmem_bytes)
1086 {
1087 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1088 EVP_PKEY_OP_DERIVE,
1089 EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1090 maxmem_bytes);
1091 }
1092
1093 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1094 int keylen)
1095 {
1096 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1097 OSSL_PKEY_PARAM_PRIV_KEY,
1098 EVP_PKEY_OP_KEYGEN,
1099 EVP_PKEY_CTRL_SET_MAC_KEY,
1100 key, keylen);
1101 }
1102
1103 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1104 {
1105 OSSL_PARAM params[2], *p = params;
1106
1107 if (ctx == NULL || op == NULL) {
1108 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1109 return 0;
1110 }
1111 if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1112 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1113 return -2;
1114 }
1115 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1116 (char *)op, 0);
1117 *p = OSSL_PARAM_construct_end();
1118 return EVP_PKEY_CTX_set_params(ctx, params);
1119 }
1120
1121 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1122 {
1123 OSSL_PARAM params[2], *p = params;
1124 int ret;
1125
1126 if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1127 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1128 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1129 return -2;
1130 }
1131
1132 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1133 /*
1134 * Cast away the const. This is
1135 * read only so should be safe
1136 */
1137 (void *)id, (size_t)len);
1138 *p++ = OSSL_PARAM_construct_end();
1139
1140 ret = evp_pkey_ctx_set_params_strict(ctx, params);
1141 if (ret == -2)
1142 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1143 return ret;
1144 }
1145
1146 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1147 {
1148 return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1149 EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1150 }
1151
1152 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1153 {
1154 int ret;
1155 void *tmp_id = NULL;
1156 OSSL_PARAM params[2], *p = params;
1157
1158 if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1159 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1160 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1161 return -2;
1162 }
1163
1164 *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1165 &tmp_id, 0);
1166 *p++ = OSSL_PARAM_construct_end();
1167
1168 ret = evp_pkey_ctx_get_params_strict(ctx, params);
1169 if (ret == -2) {
1170 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1171 } else if (ret > 0) {
1172 size_t tmp_id_len = params[0].return_size;
1173
1174 if (id != NULL)
1175 memcpy(id, tmp_id, tmp_id_len);
1176 if (id_len != NULL)
1177 *id_len = tmp_id_len;
1178 }
1179 return ret;
1180 }
1181
1182 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1183 {
1184 return get1_id_data(ctx, id, NULL);
1185 }
1186
1187 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1188 {
1189 return get1_id_data(ctx, NULL, id_len);
1190 }
1191
1192 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1193 {
1194 return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1195 }
1196
1197 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1198 {
1199 return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1200 EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1201 }
1202
1203 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1204 int cmd, int p1, void *p2)
1205 {
1206 switch (cmd) {
1207 case EVP_PKEY_CTRL_SET1_ID:
1208 return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1209 case EVP_PKEY_CTRL_GET1_ID:
1210 return evp_pkey_ctx_get1_id_prov(ctx, p2);
1211 case EVP_PKEY_CTRL_GET1_ID_LEN:
1212 return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1213 }
1214
1215 if (keytype == EVP_PKEY_DHX) {
1216 switch (cmd) {
1217 case EVP_PKEY_CTRL_DH_KDF_TYPE:
1218 return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1219 case EVP_PKEY_CTRL_DH_KDF_MD:
1220 return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1221 case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1222 return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1223 case EVP_PKEY_CTRL_DH_KDF_UKM:
1224 return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1225 case EVP_PKEY_CTRL_DH_KDF_OID:
1226 return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1227 case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1228 return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1229 case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1230 return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1231 case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1232 return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1233 case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1234 return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1235 }
1236 }
1237 if (keytype == EVP_PKEY_DH) {
1238 switch (cmd) {
1239 case EVP_PKEY_CTRL_DH_PAD:
1240 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1241 case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1242 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1243 case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1244 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1245 case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1246 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1247 case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1248 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1249 case EVP_PKEY_CTRL_DH_RFC5114:
1250 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1251 }
1252 }
1253 if (keytype == EVP_PKEY_DSA) {
1254 switch (cmd) {
1255 case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1256 return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1257 case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1258 return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1259 case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1260 return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1261 }
1262 }
1263 if (keytype == EVP_PKEY_EC) {
1264 switch (cmd) {
1265 case EVP_PKEY_CTRL_EC_PARAM_ENC:
1266 return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1267 case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1268 return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1269 case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1270 if (p1 == -2) {
1271 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1272 } else if (p1 < -1 || p1 > 1) {
1273 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1274 return -2;
1275 } else {
1276 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1277 }
1278 case EVP_PKEY_CTRL_EC_KDF_TYPE:
1279 if (p1 == -2) {
1280 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1281 } else {
1282 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1283 }
1284 case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1285 return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1286 case EVP_PKEY_CTRL_EC_KDF_MD:
1287 return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1288 case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1289 return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1290 case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1291 return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1292 case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1293 return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1294 case EVP_PKEY_CTRL_EC_KDF_UKM:
1295 return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1296 }
1297 }
1298 if (keytype == EVP_PKEY_RSA) {
1299 switch (cmd) {
1300 case EVP_PKEY_CTRL_RSA_OAEP_MD:
1301 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1302 case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1303 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1304 case EVP_PKEY_CTRL_RSA_MGF1_MD:
1305 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1306 case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1307 return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1308 case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1309 return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1310 case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1311 return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1312 case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1313 return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1314 case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1315 return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1316 }
1317 }
1318 /*
1319 * keytype == -1 is used when several key types share the same structure,
1320 * or for generic controls that are the same across multiple key types.
1321 */
1322 if (keytype == -1) {
1323 if (optype == EVP_PKEY_OP_DERIVE) {
1324 switch (cmd) {
1325 /* TLS1-PRF */
1326 case EVP_PKEY_CTRL_TLS_MD:
1327 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1328 case EVP_PKEY_CTRL_TLS_SECRET:
1329 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1330 case EVP_PKEY_CTRL_TLS_SEED:
1331 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1332
1333 /* HKDF */
1334 case EVP_PKEY_CTRL_HKDF_MD:
1335 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1336 case EVP_PKEY_CTRL_HKDF_SALT :
1337 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1338 case EVP_PKEY_CTRL_HKDF_KEY:
1339 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1340 case EVP_PKEY_CTRL_HKDF_INFO:
1341 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1342 case EVP_PKEY_CTRL_HKDF_MODE:
1343 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1344
1345 /* Scrypt */
1346 case EVP_PKEY_CTRL_PASS:
1347 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1348 case EVP_PKEY_CTRL_SCRYPT_SALT:
1349 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1350 case EVP_PKEY_CTRL_SCRYPT_N:
1351 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1352 case EVP_PKEY_CTRL_SCRYPT_R:
1353 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1354 case EVP_PKEY_CTRL_SCRYPT_P:
1355 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1356 case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1357 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1358 }
1359 } else if (optype == EVP_PKEY_OP_KEYGEN) {
1360 OSSL_PARAM params[2], *p = params;
1361
1362 switch (cmd) {
1363 case EVP_PKEY_CTRL_CIPHER:
1364 {
1365 char *ciphname = (char *)EVP_CIPHER_name(p2);
1366
1367 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1368 ciphname, 0);
1369 *p = OSSL_PARAM_construct_end();
1370
1371 return EVP_PKEY_CTX_set_params(ctx, params);
1372 }
1373 case EVP_PKEY_CTRL_SET_MAC_KEY:
1374 {
1375 *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1376 p2, p1);
1377 *p = OSSL_PARAM_construct_end();
1378
1379 return EVP_PKEY_CTX_set_params(ctx, params);
1380 }
1381 }
1382 }
1383 switch (cmd) {
1384 case EVP_PKEY_CTRL_MD:
1385 return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1386 case EVP_PKEY_CTRL_GET_MD:
1387 return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1388 case EVP_PKEY_CTRL_RSA_PADDING:
1389 return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1390 case EVP_PKEY_CTRL_GET_RSA_PADDING:
1391 return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1392 case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1393 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1394 case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1395 return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1396 case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1397 return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1398 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1399 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1400 # ifndef OPENSSL_NO_CMS
1401 case EVP_PKEY_CTRL_CMS_DECRYPT:
1402 case EVP_PKEY_CTRL_CMS_ENCRYPT:
1403 # endif
1404 /* TODO (3.0) Temporary hack, this should probe */
1405 if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1406 return 1;
1407 ERR_raise(ERR_LIB_EVP,
1408 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1409 return -2;
1410 }
1411 }
1412
1413 /*
1414 * GOST CMS format is different for different cipher algorithms.
1415 * Most of other algorithms don't have such a difference
1416 * so this ctrl is just ignored.
1417 */
1418 if (cmd == EVP_PKEY_CTRL_CIPHER)
1419 return -2;
1420
1421 return 0;
1422 }
1423
1424 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1425 int cmd, int p1, void *p2)
1426 {
1427 int ret = 0;
1428
1429 /*
1430 * If the method has a |digest_custom| function, we can relax the
1431 * operation type check, since this can be called before the operation
1432 * is initialized.
1433 */
1434 if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1435 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1436 ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1437 return -1;
1438 }
1439
1440 if ((optype != -1) && !(ctx->operation & optype)) {
1441 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1442 return -1;
1443 }
1444 }
1445
1446 switch (evp_pkey_ctx_state(ctx)) {
1447 case EVP_PKEY_STATE_PROVIDER:
1448 return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1449 case EVP_PKEY_STATE_UNKNOWN:
1450 case EVP_PKEY_STATE_LEGACY:
1451 if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1452 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1453 return -2;
1454 }
1455 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1456 return -1;
1457
1458 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1459
1460 if (ret == -2)
1461 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1462 break;
1463 }
1464 return ret;
1465 }
1466
1467 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1468 int cmd, int p1, void *p2)
1469 {
1470 int ret = 0;
1471
1472 if (ctx == NULL) {
1473 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1474 return -2;
1475 }
1476 /* If unsupported, we don't want that reported here */
1477 ERR_set_mark();
1478 ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1479 cmd, NULL, p2, p1);
1480 if (ret == -2) {
1481 ERR_pop_to_mark();
1482 } else {
1483 ERR_clear_last_mark();
1484 /*
1485 * If there was an error, there was an error.
1486 * If the operation isn't initialized yet, we also return, as
1487 * the saved values will be used then anyway.
1488 */
1489 if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1490 return ret;
1491 }
1492 return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1493 }
1494
1495 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1496 int cmd, uint64_t value)
1497 {
1498 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1499 }
1500
1501 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1502 const char *value)
1503 {
1504 if (strcmp(name, "md") == 0)
1505 name = OSSL_ALG_PARAM_DIGEST;
1506 else if (strcmp(name, "rsa_padding_mode") == 0)
1507 name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1508 else if (strcmp(name, "rsa_mgf1_md") == 0)
1509 name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1510 else if (strcmp(name, "rsa_oaep_md") == 0)
1511 name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1512 else if (strcmp(name, "rsa_oaep_label") == 0)
1513 name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1514 else if (strcmp(name, "rsa_pss_saltlen") == 0)
1515 name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1516 else if (strcmp(name, "rsa_keygen_bits") == 0)
1517 name = OSSL_PKEY_PARAM_RSA_BITS;
1518 else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1519 name = OSSL_PKEY_PARAM_RSA_E;
1520 else if (strcmp(name, "rsa_keygen_primes") == 0)
1521 name = OSSL_PKEY_PARAM_RSA_PRIMES;
1522 else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1523 name = OSSL_PKEY_PARAM_RSA_DIGEST;
1524 else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1525 name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1526 else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1527 name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1528 else if (strcmp(name, "dsa_paramgen_bits") == 0)
1529 name = OSSL_PKEY_PARAM_FFC_PBITS;
1530 else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1531 name = OSSL_PKEY_PARAM_FFC_QBITS;
1532 else if (strcmp(name, "dsa_paramgen_md") == 0)
1533 name = OSSL_PKEY_PARAM_FFC_DIGEST;
1534 else if (strcmp(name, "dh_paramgen_generator") == 0)
1535 name = OSSL_PKEY_PARAM_DH_GENERATOR;
1536 else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1537 name = OSSL_PKEY_PARAM_FFC_PBITS;
1538 else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1539 name = OSSL_PKEY_PARAM_FFC_QBITS;
1540 else if (strcmp(name, "dh_paramgen_type") == 0) {
1541 name = OSSL_PKEY_PARAM_FFC_TYPE;
1542 value = dh_gen_type_id2name(atoi(value));
1543 } else if (strcmp(name, "dh_param") == 0)
1544 name = OSSL_PKEY_PARAM_GROUP_NAME;
1545 else if (strcmp(name, "dh_rfc5114") == 0) {
1546 int num = atoi(value);
1547
1548 name = OSSL_PKEY_PARAM_GROUP_NAME;
1549 value =
1550 ossl_ffc_named_group_get_name(ossl_ffc_uid_to_dh_named_group(num));
1551 } else if (strcmp(name, "dh_pad") == 0)
1552 name = OSSL_EXCHANGE_PARAM_PAD;
1553 else if (strcmp(name, "ec_paramgen_curve") == 0)
1554 name = OSSL_PKEY_PARAM_GROUP_NAME;
1555 else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1556 name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1557 else if (strcmp(name, "ecdh_kdf_md") == 0)
1558 name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1559 else if (strcmp(name, "ec_param_enc") == 0)
1560 name = OSSL_PKEY_PARAM_EC_ENCODING;
1561 else if (strcmp(name, "N") == 0)
1562 name = OSSL_KDF_PARAM_SCRYPT_N;
1563
1564 {
1565 /*
1566 * TODO(3.0) reduce the code above to only translate known legacy
1567 * string to the corresponding core name (see core_names.h), but
1568 * otherwise leave it to this code block to do the actual work.
1569 */
1570 const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1571 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1572 int rv = 0;
1573 int exists = 0;
1574
1575 if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1576 strlen(value), &exists)) {
1577 if (!exists) {
1578 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1579 "name=%s,value=%s", name, value);
1580 return -2;
1581 }
1582 return 0;
1583 }
1584 if (EVP_PKEY_CTX_set_params(ctx, params))
1585 rv = 1;
1586 OPENSSL_free(params[0].data);
1587 return rv;
1588 }
1589 }
1590
1591 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1592 const char *name, const char *value)
1593 {
1594 int ret = 0;
1595
1596 if (ctx == NULL) {
1597 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1598 return -2;
1599 }
1600
1601 switch (evp_pkey_ctx_state(ctx)) {
1602 case EVP_PKEY_STATE_PROVIDER:
1603 return legacy_ctrl_str_to_param(ctx, name, value);
1604 case EVP_PKEY_STATE_UNKNOWN:
1605 case EVP_PKEY_STATE_LEGACY:
1606 if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1607 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1608 return -2;
1609 }
1610 if (strcmp(name, "digest") == 0)
1611 ret = EVP_PKEY_CTX_md(ctx,
1612 EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1613 EVP_PKEY_CTRL_MD, value);
1614 else
1615 ret = ctx->pmeth->ctrl_str(ctx, name, value);
1616 break;
1617 }
1618
1619 return ret;
1620 }
1621
1622 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1623 const char *name, const char *value)
1624 {
1625 int ret = 0;
1626
1627 /* If unsupported, we don't want that reported here */
1628 ERR_set_mark();
1629 ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1630 name, value, strlen(value) + 1);
1631 if (ret == -2) {
1632 ERR_pop_to_mark();
1633 } else {
1634 ERR_clear_last_mark();
1635 /*
1636 * If there was an error, there was an error.
1637 * If the operation isn't initialized yet, we also return, as
1638 * the saved values will be used then anyway.
1639 */
1640 if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1641 return ret;
1642 }
1643
1644 return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1645 }
1646
1647 static int decode_cmd(int cmd, const char *name)
1648 {
1649 if (cmd == -1) {
1650 /*
1651 * The consequence of the assertion not being true is that this
1652 * function will return -1, which will cause the calling functions
1653 * to signal that the command is unsupported... in non-debug mode.
1654 */
1655 if (ossl_assert(name != NULL))
1656 if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1657 cmd = EVP_PKEY_CTRL_SET1_ID;
1658 }
1659
1660 return cmd;
1661 }
1662
1663 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1664 int keytype, int optype,
1665 int cmd, const char *name,
1666 const void *data, size_t data_len)
1667 {
1668 if ((keytype != -1 && ctx->pmeth->pkey_id != keytype)
1669 || ((optype != -1) && !(ctx->operation & optype))) {
1670 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1671 return -1;
1672 }
1673
1674 cmd = decode_cmd(cmd, name);
1675 switch (cmd) {
1676 case EVP_PKEY_CTRL_SET1_ID:
1677 evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1678 if (name != NULL) {
1679 ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1680 if (ctx->cached_parameters.dist_id_name == NULL) {
1681 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1682 return 0;
1683 }
1684 }
1685 if (data_len > 0) {
1686 ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1687 if (ctx->cached_parameters.dist_id == NULL) {
1688 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1689 return 0;
1690 }
1691 }
1692 ctx->cached_parameters.dist_id_set = 1;
1693 ctx->cached_parameters.dist_id_len = data_len;
1694 return 1;
1695 }
1696
1697 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1698 return -2;
1699 }
1700
1701 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1702 int cmd, const char *name)
1703 {
1704 cmd = decode_cmd(cmd, name);
1705 switch (cmd) {
1706 case EVP_PKEY_CTRL_SET1_ID:
1707 OPENSSL_free(ctx->cached_parameters.dist_id);
1708 OPENSSL_free(ctx->cached_parameters.dist_id_name);
1709 ctx->cached_parameters.dist_id = NULL;
1710 ctx->cached_parameters.dist_id_name = NULL;
1711 break;
1712 }
1713 }
1714
1715 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1716 {
1717 evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1718 }
1719
1720 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1721 {
1722 int ret = 1;
1723
1724 if (ret && ctx->cached_parameters.dist_id_set) {
1725 const char *name = ctx->cached_parameters.dist_id_name;
1726 const void *val = ctx->cached_parameters.dist_id;
1727 size_t len = ctx->cached_parameters.dist_id_len;
1728
1729 if (name != NULL)
1730 ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1731 else
1732 ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1733 EVP_PKEY_CTRL_SET1_ID,
1734 (int)len, (void *)val);
1735 }
1736
1737 return ret;
1738 }
1739
1740 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1741 {
1742 return ctx->libctx;
1743 }
1744
1745 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1746 {
1747 return ctx->propquery;
1748 }
1749
1750 /* Utility functions to send a string of hex string to a ctrl */
1751
1752 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1753 {
1754 size_t len;
1755
1756 len = strlen(str);
1757 if (len > INT_MAX)
1758 return -1;
1759 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1760 }
1761
1762 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1763 {
1764 unsigned char *bin;
1765 long binlen;
1766 int rv = -1;
1767
1768 bin = OPENSSL_hexstr2buf(hex, &binlen);
1769 if (bin == NULL)
1770 return 0;
1771 if (binlen <= INT_MAX)
1772 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1773 OPENSSL_free(bin);
1774 return rv;
1775 }
1776
1777 /* Pass a message digest to a ctrl */
1778 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1779 {
1780 const EVP_MD *m;
1781
1782 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1783 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1784 return 0;
1785 }
1786 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1787 }
1788
1789 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1790 {
1791 return ctx->operation;
1792 }
1793
1794 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1795 {
1796 ctx->keygen_info = dat;
1797 ctx->keygen_info_count = datlen;
1798 }
1799
1800 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1801 {
1802 ctx->data = data;
1803 }
1804
1805 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1806 {
1807 return ctx->data;
1808 }
1809
1810 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1811 {
1812 return ctx->pkey;
1813 }
1814
1815 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1816 {
1817 return ctx->peerkey;
1818 }
1819
1820 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1821 {
1822 ctx->app_data = data;
1823 }
1824
1825 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1826 {
1827 return ctx->app_data;
1828 }
1829
1830 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1831 int (*init) (EVP_PKEY_CTX *ctx))
1832 {
1833 pmeth->init = init;
1834 }
1835
1836 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1837 int (*copy) (EVP_PKEY_CTX *dst,
1838 const EVP_PKEY_CTX *src))
1839 {
1840 pmeth->copy = copy;
1841 }
1842
1843 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1844 void (*cleanup) (EVP_PKEY_CTX *ctx))
1845 {
1846 pmeth->cleanup = cleanup;
1847 }
1848
1849 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1850 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1851 int (*paramgen) (EVP_PKEY_CTX *ctx,
1852 EVP_PKEY *pkey))
1853 {
1854 pmeth->paramgen_init = paramgen_init;
1855 pmeth->paramgen = paramgen;
1856 }
1857
1858 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1859 int (*keygen_init) (EVP_PKEY_CTX *ctx),
1860 int (*keygen) (EVP_PKEY_CTX *ctx,
1861 EVP_PKEY *pkey))
1862 {
1863 pmeth->keygen_init = keygen_init;
1864 pmeth->keygen = keygen;
1865 }
1866
1867 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1868 int (*sign_init) (EVP_PKEY_CTX *ctx),
1869 int (*sign) (EVP_PKEY_CTX *ctx,
1870 unsigned char *sig, size_t *siglen,
1871 const unsigned char *tbs,
1872 size_t tbslen))
1873 {
1874 pmeth->sign_init = sign_init;
1875 pmeth->sign = sign;
1876 }
1877
1878 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1879 int (*verify_init) (EVP_PKEY_CTX *ctx),
1880 int (*verify) (EVP_PKEY_CTX *ctx,
1881 const unsigned char *sig,
1882 size_t siglen,
1883 const unsigned char *tbs,
1884 size_t tbslen))
1885 {
1886 pmeth->verify_init = verify_init;
1887 pmeth->verify = verify;
1888 }
1889
1890 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1891 int (*verify_recover_init) (EVP_PKEY_CTX
1892 *ctx),
1893 int (*verify_recover) (EVP_PKEY_CTX
1894 *ctx,
1895 unsigned char
1896 *sig,
1897 size_t *siglen,
1898 const unsigned
1899 char *tbs,
1900 size_t tbslen))
1901 {
1902 pmeth->verify_recover_init = verify_recover_init;
1903 pmeth->verify_recover = verify_recover;
1904 }
1905
1906 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1907 int (*signctx_init) (EVP_PKEY_CTX *ctx,
1908 EVP_MD_CTX *mctx),
1909 int (*signctx) (EVP_PKEY_CTX *ctx,
1910 unsigned char *sig,
1911 size_t *siglen,
1912 EVP_MD_CTX *mctx))
1913 {
1914 pmeth->signctx_init = signctx_init;
1915 pmeth->signctx = signctx;
1916 }
1917
1918 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1919 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1920 EVP_MD_CTX *mctx),
1921 int (*verifyctx) (EVP_PKEY_CTX *ctx,
1922 const unsigned char *sig,
1923 int siglen,
1924 EVP_MD_CTX *mctx))
1925 {
1926 pmeth->verifyctx_init = verifyctx_init;
1927 pmeth->verifyctx = verifyctx;
1928 }
1929
1930 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1931 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1932 int (*encryptfn) (EVP_PKEY_CTX *ctx,
1933 unsigned char *out,
1934 size_t *outlen,
1935 const unsigned char *in,
1936 size_t inlen))
1937 {
1938 pmeth->encrypt_init = encrypt_init;
1939 pmeth->encrypt = encryptfn;
1940 }
1941
1942 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1943 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1944 int (*decrypt) (EVP_PKEY_CTX *ctx,
1945 unsigned char *out,
1946 size_t *outlen,
1947 const unsigned char *in,
1948 size_t inlen))
1949 {
1950 pmeth->decrypt_init = decrypt_init;
1951 pmeth->decrypt = decrypt;
1952 }
1953
1954 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1955 int (*derive_init) (EVP_PKEY_CTX *ctx),
1956 int (*derive) (EVP_PKEY_CTX *ctx,
1957 unsigned char *key,
1958 size_t *keylen))
1959 {
1960 pmeth->derive_init = derive_init;
1961 pmeth->derive = derive;
1962 }
1963
1964 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1965 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1966 void *p2),
1967 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1968 const char *type,
1969 const char *value))
1970 {
1971 pmeth->ctrl = ctrl;
1972 pmeth->ctrl_str = ctrl_str;
1973 }
1974
1975 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1976 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1977 const unsigned char *tbs, size_t tbslen))
1978 {
1979 pmeth->digestsign = digestsign;
1980 }
1981
1982 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1983 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1984 size_t siglen, const unsigned char *tbs,
1985 size_t tbslen))
1986 {
1987 pmeth->digestverify = digestverify;
1988 }
1989
1990 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1991 int (*check) (EVP_PKEY *pkey))
1992 {
1993 pmeth->check = check;
1994 }
1995
1996 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1997 int (*check) (EVP_PKEY *pkey))
1998 {
1999 pmeth->public_check = check;
2000 }
2001
2002 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
2003 int (*check) (EVP_PKEY *pkey))
2004 {
2005 pmeth->param_check = check;
2006 }
2007
2008 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
2009 int (*digest_custom) (EVP_PKEY_CTX *ctx,
2010 EVP_MD_CTX *mctx))
2011 {
2012 pmeth->digest_custom = digest_custom;
2013 }
2014
2015 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
2016 int (**pinit) (EVP_PKEY_CTX *ctx))
2017 {
2018 *pinit = pmeth->init;
2019 }
2020
2021 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2022 int (**pcopy) (EVP_PKEY_CTX *dst,
2023 const EVP_PKEY_CTX *src))
2024 {
2025 *pcopy = pmeth->copy;
2026 }
2027
2028 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2029 void (**pcleanup) (EVP_PKEY_CTX *ctx))
2030 {
2031 *pcleanup = pmeth->cleanup;
2032 }
2033
2034 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2035 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2036 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2037 EVP_PKEY *pkey))
2038 {
2039 if (pparamgen_init)
2040 *pparamgen_init = pmeth->paramgen_init;
2041 if (pparamgen)
2042 *pparamgen = pmeth->paramgen;
2043 }
2044
2045 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2046 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2047 int (**pkeygen) (EVP_PKEY_CTX *ctx,
2048 EVP_PKEY *pkey))
2049 {
2050 if (pkeygen_init)
2051 *pkeygen_init = pmeth->keygen_init;
2052 if (pkeygen)
2053 *pkeygen = pmeth->keygen;
2054 }
2055
2056 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2057 int (**psign_init) (EVP_PKEY_CTX *ctx),
2058 int (**psign) (EVP_PKEY_CTX *ctx,
2059 unsigned char *sig, size_t *siglen,
2060 const unsigned char *tbs,
2061 size_t tbslen))
2062 {
2063 if (psign_init)
2064 *psign_init = pmeth->sign_init;
2065 if (psign)
2066 *psign = pmeth->sign;
2067 }
2068
2069 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2070 int (**pverify_init) (EVP_PKEY_CTX *ctx),
2071 int (**pverify) (EVP_PKEY_CTX *ctx,
2072 const unsigned char *sig,
2073 size_t siglen,
2074 const unsigned char *tbs,
2075 size_t tbslen))
2076 {
2077 if (pverify_init)
2078 *pverify_init = pmeth->verify_init;
2079 if (pverify)
2080 *pverify = pmeth->verify;
2081 }
2082
2083 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2084 int (**pverify_recover_init) (EVP_PKEY_CTX
2085 *ctx),
2086 int (**pverify_recover) (EVP_PKEY_CTX
2087 *ctx,
2088 unsigned char
2089 *sig,
2090 size_t *siglen,
2091 const unsigned
2092 char *tbs,
2093 size_t tbslen))
2094 {
2095 if (pverify_recover_init)
2096 *pverify_recover_init = pmeth->verify_recover_init;
2097 if (pverify_recover)
2098 *pverify_recover = pmeth->verify_recover;
2099 }
2100
2101 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2102 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2103 EVP_MD_CTX *mctx),
2104 int (**psignctx) (EVP_PKEY_CTX *ctx,
2105 unsigned char *sig,
2106 size_t *siglen,
2107 EVP_MD_CTX *mctx))
2108 {
2109 if (psignctx_init)
2110 *psignctx_init = pmeth->signctx_init;
2111 if (psignctx)
2112 *psignctx = pmeth->signctx;
2113 }
2114
2115 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2116 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2117 EVP_MD_CTX *mctx),
2118 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2119 const unsigned char *sig,
2120 int siglen,
2121 EVP_MD_CTX *mctx))
2122 {
2123 if (pverifyctx_init)
2124 *pverifyctx_init = pmeth->verifyctx_init;
2125 if (pverifyctx)
2126 *pverifyctx = pmeth->verifyctx;
2127 }
2128
2129 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2130 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2131 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2132 unsigned char *out,
2133 size_t *outlen,
2134 const unsigned char *in,
2135 size_t inlen))
2136 {
2137 if (pencrypt_init)
2138 *pencrypt_init = pmeth->encrypt_init;
2139 if (pencryptfn)
2140 *pencryptfn = pmeth->encrypt;
2141 }
2142
2143 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2144 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2145 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2146 unsigned char *out,
2147 size_t *outlen,
2148 const unsigned char *in,
2149 size_t inlen))
2150 {
2151 if (pdecrypt_init)
2152 *pdecrypt_init = pmeth->decrypt_init;
2153 if (pdecrypt)
2154 *pdecrypt = pmeth->decrypt;
2155 }
2156
2157 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2158 int (**pderive_init) (EVP_PKEY_CTX *ctx),
2159 int (**pderive) (EVP_PKEY_CTX *ctx,
2160 unsigned char *key,
2161 size_t *keylen))
2162 {
2163 if (pderive_init)
2164 *pderive_init = pmeth->derive_init;
2165 if (pderive)
2166 *pderive = pmeth->derive;
2167 }
2168
2169 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2170 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2171 void *p2),
2172 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2173 const char *type,
2174 const char *value))
2175 {
2176 if (pctrl)
2177 *pctrl = pmeth->ctrl;
2178 if (pctrl_str)
2179 *pctrl_str = pmeth->ctrl_str;
2180 }
2181
2182 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2183 int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2184 const unsigned char *tbs, size_t tbslen))
2185 {
2186 if (digestsign)
2187 *digestsign = pmeth->digestsign;
2188 }
2189
2190 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2191 int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2192 size_t siglen, const unsigned char *tbs,
2193 size_t tbslen))
2194 {
2195 if (digestverify)
2196 *digestverify = pmeth->digestverify;
2197 }
2198
2199 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2200 int (**pcheck) (EVP_PKEY *pkey))
2201 {
2202 if (pcheck != NULL)
2203 *pcheck = pmeth->check;
2204 }
2205
2206 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2207 int (**pcheck) (EVP_PKEY *pkey))
2208 {
2209 if (pcheck != NULL)
2210 *pcheck = pmeth->public_check;
2211 }
2212
2213 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2214 int (**pcheck) (EVP_PKEY *pkey))
2215 {
2216 if (pcheck != NULL)
2217 *pcheck = pmeth->param_check;
2218 }
2219
2220 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2221 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2222 EVP_MD_CTX *mctx))
2223 {
2224 if (pdigest_custom != NULL)
2225 *pdigest_custom = pmeth->digest_custom;
2226 }
2227
2228 #endif /* FIPS_MODULE */
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