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[thirdparty/openssl.git] / crypto / evp / pmeth_lib.c
1 /*
2 * Copyright 2006-2023 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 #ifndef FIPS_MODULE
19 # include <openssl/engine.h>
20 #endif
21 #include <openssl/evp.h>
22 #include <openssl/core_names.h>
23 #include <openssl/dh.h>
24 #include <openssl/rsa.h>
25 #include <openssl/kdf.h>
26 #include "internal/cryptlib.h"
27 #ifndef FIPS_MODULE
28 # include "crypto/asn1.h"
29 #endif
30 #include "crypto/evp.h"
31 #include "crypto/dh.h"
32 #include "crypto/ec.h"
33 #include "internal/ffc.h"
34 #include "internal/numbers.h"
35 #include "internal/provider.h"
36 #include "evp_local.h"
37
38 #ifndef FIPS_MODULE
39
40 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
41 int keytype, int optype,
42 int cmd, const char *name,
43 const void *data, size_t data_len);
44 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
45 int cmd, const char *name);
46 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
47
48 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
49 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
50
51 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
52
53 /* This array needs to be in order of NIDs */
54 static pmeth_fn standard_methods[] = {
55 ossl_rsa_pkey_method,
56 # ifndef OPENSSL_NO_DH
57 ossl_dh_pkey_method,
58 # endif
59 # ifndef OPENSSL_NO_DSA
60 ossl_dsa_pkey_method,
61 # endif
62 # ifndef OPENSSL_NO_EC
63 ossl_ec_pkey_method,
64 # endif
65 ossl_rsa_pss_pkey_method,
66 # ifndef OPENSSL_NO_DH
67 ossl_dhx_pkey_method,
68 # endif
69 # ifndef OPENSSL_NO_ECX
70 ossl_ecx25519_pkey_method,
71 ossl_ecx448_pkey_method,
72 ossl_ed25519_pkey_method,
73 ossl_ed448_pkey_method,
74 # endif
75 };
76
77 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
78
79 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
80 {
81 return ((*a)->pkey_id - ((**b)())->pkey_id);
82 }
83
84 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
85
86 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
87 const EVP_PKEY_METHOD *const *b)
88 {
89 return ((*a)->pkey_id - (*b)->pkey_id);
90 }
91
92 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
93 {
94 if (app_pkey_methods != NULL) {
95 int idx;
96 EVP_PKEY_METHOD tmp;
97
98 tmp.pkey_id = type;
99 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
100 if (idx >= 0)
101 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
102 }
103 return NULL;
104 }
105
106 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
107 {
108 pmeth_fn *ret;
109 EVP_PKEY_METHOD tmp;
110 const EVP_PKEY_METHOD *t;
111
112 if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
113 return t;
114
115 tmp.pkey_id = type;
116 t = &tmp;
117 ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
118 OSSL_NELEM(standard_methods));
119 if (ret == NULL || *ret == NULL)
120 return NULL;
121 return (**ret)();
122 }
123
124 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
125 {
126 EVP_PKEY_METHOD *pmeth;
127
128 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
129 if (pmeth == NULL)
130 return NULL;
131
132 pmeth->pkey_id = id;
133 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
134 return pmeth;
135 }
136
137 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
138 void *arg)
139 {
140 int *type = arg;
141
142 if (*type == NID_undef)
143 *type = evp_pkey_name2type(keytype);
144 }
145
146 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
147 {
148 int type = NID_undef;
149
150 EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
151 &type);
152 return type;
153 }
154 #endif /* FIPS_MODULE */
155
156 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
157 {
158 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
159 return EVP_PKEY_STATE_UNKNOWN;
160
161 if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
162 && ctx->op.kex.algctx != NULL)
163 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
164 && ctx->op.sig.algctx != NULL)
165 || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
166 && ctx->op.ciph.algctx != NULL)
167 || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
168 && ctx->op.keymgmt.genctx != NULL)
169 || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
170 && ctx->op.encap.algctx != NULL))
171 return EVP_PKEY_STATE_PROVIDER;
172
173 return EVP_PKEY_STATE_LEGACY;
174 }
175
176 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
177 EVP_PKEY *pkey, ENGINE *e,
178 const char *keytype, const char *propquery,
179 int id)
180
181 {
182 EVP_PKEY_CTX *ret = NULL;
183 const EVP_PKEY_METHOD *pmeth = NULL, *app_pmeth = NULL;
184 EVP_KEYMGMT *keymgmt = NULL;
185
186 /* Code below to be removed when legacy support is dropped. */
187 /* BEGIN legacy */
188 if (id == -1) {
189 if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
190 id = pkey->type;
191 } else {
192 if (pkey != NULL) {
193 /* Must be provided if we get here */
194 keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
195 }
196 #ifndef FIPS_MODULE
197 if (keytype != NULL) {
198 id = evp_pkey_name2type(keytype);
199 if (id == NID_undef)
200 id = -1;
201 }
202 #endif
203 }
204 }
205 /* If no ID was found here, we can only resort to find a keymgmt */
206 if (id == -1) {
207 #ifndef FIPS_MODULE
208 /* Using engine with a key without id will not work */
209 if (e != NULL) {
210 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
211 return NULL;
212 }
213 #endif
214 goto common;
215 }
216
217 #ifndef FIPS_MODULE
218 /*
219 * Here, we extract what information we can for the purpose of
220 * supporting usage with implementations from providers, to make
221 * for a smooth transition from legacy stuff to provider based stuff.
222 *
223 * If an engine is given, this is entirely legacy, and we should not
224 * pretend anything else, so we clear the name.
225 */
226 if (e != NULL)
227 keytype = NULL;
228 if (e == NULL && (pkey == NULL || pkey->foreign == 0))
229 keytype = OBJ_nid2sn(id);
230
231 # ifndef OPENSSL_NO_ENGINE
232 if (e == NULL && pkey != NULL)
233 e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
234 /* Try to find an ENGINE which implements this method */
235 if (e != NULL) {
236 if (!ENGINE_init(e)) {
237 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
238 return NULL;
239 }
240 } else {
241 e = ENGINE_get_pkey_meth_engine(id);
242 }
243
244 /*
245 * If an ENGINE handled this method look it up. Otherwise use internal
246 * tables.
247 */
248 if (e != NULL)
249 pmeth = ENGINE_get_pkey_meth(e, id);
250 else if (pkey != NULL && pkey->foreign)
251 pmeth = EVP_PKEY_meth_find(id);
252 else
253 # endif
254 app_pmeth = pmeth = evp_pkey_meth_find_added_by_application(id);
255
256 /* END legacy */
257 #endif /* FIPS_MODULE */
258 common:
259 /*
260 * If there's no engine and no app supplied pmeth and there's a name, we try
261 * fetching a provider implementation.
262 */
263 if (e == NULL && app_pmeth == NULL && keytype != NULL) {
264 /*
265 * If |pkey| is given and is provided, we take a reference to its
266 * keymgmt. Otherwise, we fetch one for the keytype we got. This
267 * is to ensure that operation init functions can access what they
268 * need through this single pointer.
269 */
270 if (pkey != NULL && pkey->keymgmt != NULL) {
271 if (!EVP_KEYMGMT_up_ref(pkey->keymgmt))
272 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
273 else
274 keymgmt = pkey->keymgmt;
275 } else {
276 keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
277 }
278 if (keymgmt == NULL)
279 return NULL; /* EVP_KEYMGMT_fetch() recorded an error */
280
281 #ifndef FIPS_MODULE
282 /*
283 * Chase down the legacy NID, as that might be needed for diverse
284 * purposes, such as ensure that EVP_PKEY_type() can return sensible
285 * values. We go through all keymgmt names, because the keytype
286 * that's passed to this function doesn't necessarily translate
287 * directly.
288 */
289 if (keymgmt != NULL) {
290 int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
291
292 if (tmp_id != NID_undef) {
293 if (id == -1) {
294 id = tmp_id;
295 } else {
296 /*
297 * It really really shouldn't differ. If it still does,
298 * something is very wrong.
299 */
300 if (!ossl_assert(id == tmp_id)) {
301 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
302 EVP_KEYMGMT_free(keymgmt);
303 return NULL;
304 }
305 }
306 }
307 }
308 #endif
309 }
310
311 if (pmeth == NULL && keymgmt == NULL) {
312 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
313 } else {
314 ret = OPENSSL_zalloc(sizeof(*ret));
315 }
316
317 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
318 if ((ret == NULL || pmeth == NULL) && e != NULL)
319 ENGINE_finish(e);
320 #endif
321
322 if (ret == NULL) {
323 EVP_KEYMGMT_free(keymgmt);
324 return NULL;
325 }
326 if (propquery != NULL) {
327 ret->propquery = OPENSSL_strdup(propquery);
328 if (ret->propquery == NULL) {
329 OPENSSL_free(ret);
330 EVP_KEYMGMT_free(keymgmt);
331 return NULL;
332 }
333 }
334 ret->libctx = libctx;
335 ret->keytype = keytype;
336 ret->keymgmt = keymgmt;
337 ret->legacy_keytype = id;
338 ret->engine = e;
339 ret->pmeth = pmeth;
340 ret->operation = EVP_PKEY_OP_UNDEFINED;
341 ret->pkey = pkey;
342 if (pkey != NULL)
343 EVP_PKEY_up_ref(pkey);
344
345 if (pmeth != NULL && pmeth->init != NULL) {
346 if (pmeth->init(ret) <= 0) {
347 ret->pmeth = NULL;
348 EVP_PKEY_CTX_free(ret);
349 return NULL;
350 }
351 }
352
353 return ret;
354 }
355
356 /*- All methods below can also be used in FIPS_MODULE */
357
358 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
359 const char *name,
360 const char *propquery)
361 {
362 return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
363 }
364
365 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
366 const char *propquery)
367 {
368 return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
369 }
370
371 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
372 {
373 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
374 if (ctx->op.sig.algctx != NULL && ctx->op.sig.signature != NULL)
375 ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
376 EVP_SIGNATURE_free(ctx->op.sig.signature);
377 ctx->op.sig.algctx = NULL;
378 ctx->op.sig.signature = NULL;
379 } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
380 if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
381 ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
382 EVP_KEYEXCH_free(ctx->op.kex.exchange);
383 ctx->op.kex.algctx = NULL;
384 ctx->op.kex.exchange = NULL;
385 } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
386 if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
387 ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
388 EVP_KEM_free(ctx->op.encap.kem);
389 ctx->op.encap.algctx = NULL;
390 ctx->op.encap.kem = NULL;
391 }
392 else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
393 if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
394 ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
395 EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
396 ctx->op.ciph.algctx = NULL;
397 ctx->op.ciph.cipher = NULL;
398 } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
399 if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
400 evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
401 }
402 }
403
404 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
405 {
406 if (ctx == NULL)
407 return;
408 if (ctx->pmeth && ctx->pmeth->cleanup)
409 ctx->pmeth->cleanup(ctx);
410
411 evp_pkey_ctx_free_old_ops(ctx);
412 #ifndef FIPS_MODULE
413 evp_pkey_ctx_free_all_cached_data(ctx);
414 #endif
415 EVP_KEYMGMT_free(ctx->keymgmt);
416
417 OPENSSL_free(ctx->propquery);
418 EVP_PKEY_free(ctx->pkey);
419 EVP_PKEY_free(ctx->peerkey);
420 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
421 ENGINE_finish(ctx->engine);
422 #endif
423 BN_free(ctx->rsa_pubexp);
424 OPENSSL_free(ctx);
425 }
426
427 #ifndef FIPS_MODULE
428
429 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
430 const EVP_PKEY_METHOD *meth)
431 {
432 if (ppkey_id)
433 *ppkey_id = meth->pkey_id;
434 if (pflags)
435 *pflags = meth->flags;
436 }
437
438 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
439 {
440 int pkey_id = dst->pkey_id;
441 int flags = dst->flags;
442
443 *dst = *src;
444
445 /* We only copy the function pointers so restore the other values */
446 dst->pkey_id = pkey_id;
447 dst->flags = flags;
448 }
449
450 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
451 {
452 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
453 OPENSSL_free(pmeth);
454 }
455
456 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
457 {
458 return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
459 }
460
461 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
462 {
463 return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
464 }
465
466 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
467 {
468 EVP_PKEY_CTX *rctx;
469
470 # ifndef OPENSSL_NO_ENGINE
471 /* Make sure it's safe to copy a pkey context using an ENGINE */
472 if (pctx->engine && !ENGINE_init(pctx->engine)) {
473 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
474 return 0;
475 }
476 # endif
477 rctx = OPENSSL_zalloc(sizeof(*rctx));
478 if (rctx == NULL)
479 return NULL;
480
481 if (pctx->pkey != NULL)
482 EVP_PKEY_up_ref(pctx->pkey);
483 rctx->pkey = pctx->pkey;
484 rctx->operation = pctx->operation;
485 rctx->libctx = pctx->libctx;
486 rctx->keytype = pctx->keytype;
487 rctx->propquery = NULL;
488 if (pctx->propquery != NULL) {
489 rctx->propquery = OPENSSL_strdup(pctx->propquery);
490 if (rctx->propquery == NULL)
491 goto err;
492 }
493 rctx->legacy_keytype = pctx->legacy_keytype;
494
495 if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
496 if (pctx->op.kex.exchange != NULL) {
497 rctx->op.kex.exchange = pctx->op.kex.exchange;
498 if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
499 goto err;
500 }
501 if (pctx->op.kex.algctx != NULL) {
502 if (!ossl_assert(pctx->op.kex.exchange != NULL))
503 goto err;
504
505 if (pctx->op.kex.exchange->dupctx != NULL)
506 rctx->op.kex.algctx
507 = pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
508
509 if (rctx->op.kex.algctx == NULL) {
510 EVP_KEYEXCH_free(rctx->op.kex.exchange);
511 rctx->op.kex.exchange = NULL;
512 goto err;
513 }
514 return rctx;
515 }
516 } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
517 if (pctx->op.sig.signature != NULL) {
518 rctx->op.sig.signature = pctx->op.sig.signature;
519 if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
520 goto err;
521 }
522 if (pctx->op.sig.algctx != NULL) {
523 if (!ossl_assert(pctx->op.sig.signature != NULL))
524 goto err;
525
526 if (pctx->op.sig.signature->dupctx != NULL)
527 rctx->op.sig.algctx
528 = pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
529
530 if (rctx->op.sig.algctx == NULL) {
531 EVP_SIGNATURE_free(rctx->op.sig.signature);
532 rctx->op.sig.signature = NULL;
533 goto err;
534 }
535 return rctx;
536 }
537 } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
538 if (pctx->op.ciph.cipher != NULL) {
539 rctx->op.ciph.cipher = pctx->op.ciph.cipher;
540 if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
541 goto err;
542 }
543 if (pctx->op.ciph.algctx != NULL) {
544 if (!ossl_assert(pctx->op.ciph.cipher != NULL))
545 goto err;
546
547 if (pctx->op.ciph.cipher->dupctx != NULL)
548 rctx->op.ciph.algctx
549 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
550
551 if (rctx->op.ciph.algctx == NULL) {
552 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
553 rctx->op.ciph.cipher = NULL;
554 goto err;
555 }
556 return rctx;
557 }
558 } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
559 if (pctx->op.encap.kem != NULL) {
560 rctx->op.encap.kem = pctx->op.encap.kem;
561 if (!EVP_KEM_up_ref(rctx->op.encap.kem))
562 goto err;
563 }
564 if (pctx->op.encap.algctx != NULL) {
565 if (!ossl_assert(pctx->op.encap.kem != NULL))
566 goto err;
567
568 if (pctx->op.encap.kem->dupctx != NULL)
569 rctx->op.encap.algctx
570 = pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
571
572 if (rctx->op.encap.algctx == NULL) {
573 EVP_KEM_free(rctx->op.encap.kem);
574 rctx->op.encap.kem = NULL;
575 goto err;
576 }
577 return rctx;
578 }
579 } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
580 /* Not supported - This would need a gen_dupctx() to work */
581 goto err;
582 }
583
584 rctx->pmeth = pctx->pmeth;
585 # ifndef OPENSSL_NO_ENGINE
586 rctx->engine = pctx->engine;
587 # endif
588
589 if (pctx->peerkey != NULL)
590 EVP_PKEY_up_ref(pctx->peerkey);
591 rctx->peerkey = pctx->peerkey;
592
593 if (pctx->pmeth == NULL) {
594 if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
595 EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
596 void *provkey;
597
598 provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
599 &tmp_keymgmt, pctx->propquery);
600 if (provkey == NULL)
601 goto err;
602 if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
603 goto err;
604 EVP_KEYMGMT_free(rctx->keymgmt);
605 rctx->keymgmt = tmp_keymgmt;
606 return rctx;
607 }
608 } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
609 return rctx;
610 }
611 err:
612 rctx->pmeth = NULL;
613 EVP_PKEY_CTX_free(rctx);
614 return NULL;
615 }
616
617 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
618 {
619 if (app_pkey_methods == NULL) {
620 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
621 if (app_pkey_methods == NULL) {
622 ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
623 return 0;
624 }
625 }
626 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
627 ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
628 return 0;
629 }
630 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
631 return 1;
632 }
633
634 void evp_app_cleanup_int(void)
635 {
636 if (app_pkey_methods != NULL)
637 sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
638 }
639
640 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
641 {
642 const EVP_PKEY_METHOD *ret;
643
644 ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
645
646 return ret == NULL ? 0 : 1;
647 }
648
649 size_t EVP_PKEY_meth_get_count(void)
650 {
651 size_t rv = OSSL_NELEM(standard_methods);
652
653 if (app_pkey_methods)
654 rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
655 return rv;
656 }
657
658 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
659 {
660 if (idx < OSSL_NELEM(standard_methods))
661 return (standard_methods[idx])();
662 if (app_pkey_methods == NULL)
663 return NULL;
664 idx -= OSSL_NELEM(standard_methods);
665 if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
666 return NULL;
667 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
668 }
669 #endif
670
671 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
672 {
673 #ifndef FIPS_MODULE
674 if (evp_pkey_ctx_is_legacy(ctx))
675 return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
676 #endif
677 return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
678 }
679
680 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
681 {
682 switch (evp_pkey_ctx_state(ctx)) {
683 case EVP_PKEY_STATE_PROVIDER:
684 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
685 && ctx->op.kex.exchange != NULL
686 && ctx->op.kex.exchange->set_ctx_params != NULL)
687 return
688 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
689 params);
690 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
691 && ctx->op.sig.signature != NULL
692 && ctx->op.sig.signature->set_ctx_params != NULL)
693 return
694 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
695 params);
696 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
697 && ctx->op.ciph.cipher != NULL
698 && ctx->op.ciph.cipher->set_ctx_params != NULL)
699 return
700 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
701 params);
702 if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
703 && ctx->keymgmt != NULL
704 && ctx->keymgmt->gen_set_params != NULL)
705 return
706 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
707 params);
708 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
709 && ctx->op.encap.kem != NULL
710 && ctx->op.encap.kem->set_ctx_params != NULL)
711 return
712 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
713 params);
714 break;
715 #ifndef FIPS_MODULE
716 case EVP_PKEY_STATE_UNKNOWN:
717 case EVP_PKEY_STATE_LEGACY:
718 return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
719 #endif
720 }
721 return 0;
722 }
723
724 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
725 {
726 switch (evp_pkey_ctx_state(ctx)) {
727 case EVP_PKEY_STATE_PROVIDER:
728 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
729 && ctx->op.kex.exchange != NULL
730 && ctx->op.kex.exchange->get_ctx_params != NULL)
731 return
732 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
733 params);
734 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
735 && ctx->op.sig.signature != NULL
736 && ctx->op.sig.signature->get_ctx_params != NULL)
737 return
738 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
739 params);
740 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
741 && ctx->op.ciph.cipher != NULL
742 && ctx->op.ciph.cipher->get_ctx_params != NULL)
743 return
744 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
745 params);
746 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
747 && ctx->op.encap.kem != NULL
748 && ctx->op.encap.kem->get_ctx_params != NULL)
749 return
750 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
751 params);
752 break;
753 #ifndef FIPS_MODULE
754 case EVP_PKEY_STATE_UNKNOWN:
755 case EVP_PKEY_STATE_LEGACY:
756 return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
757 #endif
758 }
759 return 0;
760 }
761
762 #ifndef FIPS_MODULE
763 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
764 {
765 void *provctx;
766
767 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
768 && ctx->op.kex.exchange != NULL
769 && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
770 provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
771 return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
772 provctx);
773 }
774 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
775 && ctx->op.sig.signature != NULL
776 && ctx->op.sig.signature->gettable_ctx_params != NULL) {
777 provctx = ossl_provider_ctx(
778 EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
779 return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
780 provctx);
781 }
782 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
783 && ctx->op.ciph.cipher != NULL
784 && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
785 provctx = ossl_provider_ctx(
786 EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
787 return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
788 provctx);
789 }
790 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
791 && ctx->op.encap.kem != NULL
792 && ctx->op.encap.kem->gettable_ctx_params != NULL) {
793 provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
794 return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
795 provctx);
796 }
797 return NULL;
798 }
799
800 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
801 {
802 void *provctx;
803
804 if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
805 && ctx->op.kex.exchange != NULL
806 && ctx->op.kex.exchange->settable_ctx_params != NULL) {
807 provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
808 return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
809 provctx);
810 }
811 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
812 && ctx->op.sig.signature != NULL
813 && ctx->op.sig.signature->settable_ctx_params != NULL) {
814 provctx = ossl_provider_ctx(
815 EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
816 return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
817 provctx);
818 }
819 if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
820 && ctx->op.ciph.cipher != NULL
821 && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
822 provctx = ossl_provider_ctx(
823 EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
824 return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
825 provctx);
826 }
827 if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
828 && ctx->keymgmt != NULL
829 && ctx->keymgmt->gen_settable_params != NULL) {
830 provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
831 return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
832 provctx);
833 }
834 if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
835 && ctx->op.encap.kem != NULL
836 && ctx->op.encap.kem->settable_ctx_params != NULL) {
837 provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
838 return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
839 provctx);
840 }
841 return NULL;
842 }
843
844 /*
845 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
846 *
847 * Return 1 on success, 0 or negative for errors.
848 *
849 * In particular they return -2 if any of the params is not supported.
850 *
851 * They are not available in FIPS_MODULE as they depend on
852 * - EVP_PKEY_CTX_{get,set}_params()
853 * - EVP_PKEY_CTX_{gettable,settable}_params()
854 *
855 */
856 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
857 {
858 if (ctx == NULL || params == NULL)
859 return 0;
860
861 /*
862 * We only check for provider side EVP_PKEY_CTX. For #legacy, we
863 * depend on the translation that happens in EVP_PKEY_CTX_set_params()
864 * call, and that the resulting ctrl call will return -2 if it doesn't
865 * known the ctrl command number.
866 */
867 if (evp_pkey_ctx_is_provided(ctx)) {
868 const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
869 const OSSL_PARAM *p;
870
871 for (p = params; p->key != NULL; p++) {
872 /* Check the ctx actually understands this parameter */
873 if (OSSL_PARAM_locate_const(settable, p->key) == NULL)
874 return -2;
875 }
876 }
877
878 return EVP_PKEY_CTX_set_params(ctx, params);
879 }
880
881 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
882 {
883 if (ctx == NULL || params == NULL)
884 return 0;
885
886 /*
887 * We only check for provider side EVP_PKEY_CTX. For #legacy, we
888 * depend on the translation that happens in EVP_PKEY_CTX_get_params()
889 * call, and that the resulting ctrl call will return -2 if it doesn't
890 * known the ctrl command number.
891 */
892 if (evp_pkey_ctx_is_provided(ctx)) {
893 const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
894 const OSSL_PARAM *p;
895
896 for (p = params; p->key != NULL; p++) {
897 /* Check the ctx actually understands this parameter */
898 if (OSSL_PARAM_locate_const(gettable, p->key) == NULL)
899 return -2;
900 }
901 }
902
903 return EVP_PKEY_CTX_get_params(ctx, params);
904 }
905
906 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
907 {
908 OSSL_PARAM sig_md_params[2], *p = sig_md_params;
909 /* 80 should be big enough */
910 char name[80] = "";
911 const EVP_MD *tmp;
912
913 if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
914 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
915 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
916 return -2;
917 }
918
919 if (ctx->op.sig.algctx == NULL)
920 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
921 EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
922
923 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
924 name,
925 sizeof(name));
926 *p = OSSL_PARAM_construct_end();
927
928 if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
929 return 0;
930
931 tmp = evp_get_digestbyname_ex(ctx->libctx, name);
932 if (tmp == NULL)
933 return 0;
934
935 *md = tmp;
936
937 return 1;
938 }
939
940 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
941 int fallback, const char *param, int op,
942 int ctrl)
943 {
944 OSSL_PARAM md_params[2], *p = md_params;
945 const char *name;
946
947 if (ctx == NULL || (ctx->operation & op) == 0) {
948 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
949 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
950 return -2;
951 }
952
953 if (fallback)
954 return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
955
956 if (md == NULL) {
957 name = "";
958 } else {
959 name = EVP_MD_get0_name(md);
960 }
961
962 *p++ = OSSL_PARAM_construct_utf8_string(param,
963 /*
964 * Cast away the const. This is read
965 * only so should be safe
966 */
967 (char *)name, 0);
968 *p = OSSL_PARAM_construct_end();
969
970 return EVP_PKEY_CTX_set_params(ctx, md_params);
971 }
972
973 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
974 {
975 return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
976 OSSL_SIGNATURE_PARAM_DIGEST,
977 EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
978 }
979
980 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
981 {
982 return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
983 OSSL_KDF_PARAM_DIGEST,
984 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
985 }
986
987 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
988 const char *param, int op, int ctrl,
989 const unsigned char *data,
990 int datalen)
991 {
992 OSSL_PARAM octet_string_params[2], *p = octet_string_params;
993
994 if (ctx == NULL || (ctx->operation & op) == 0) {
995 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
996 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
997 return -2;
998 }
999
1000 /* Code below to be removed when legacy support is dropped. */
1001 if (fallback)
1002 return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
1003 /* end of legacy support */
1004
1005 if (datalen < 0) {
1006 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
1007 return 0;
1008 }
1009
1010 *p++ = OSSL_PARAM_construct_octet_string(param,
1011 /*
1012 * Cast away the const. This is read
1013 * only so should be safe
1014 */
1015 (unsigned char *)data,
1016 (size_t)datalen);
1017 *p = OSSL_PARAM_construct_end();
1018
1019 return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
1020 }
1021
1022 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1023 const unsigned char *sec, int seclen)
1024 {
1025 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1026 OSSL_KDF_PARAM_SECRET,
1027 EVP_PKEY_OP_DERIVE,
1028 EVP_PKEY_CTRL_TLS_SECRET,
1029 sec, seclen);
1030 }
1031
1032 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1033 const unsigned char *seed, int seedlen)
1034 {
1035 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1036 OSSL_KDF_PARAM_SEED,
1037 EVP_PKEY_OP_DERIVE,
1038 EVP_PKEY_CTRL_TLS_SEED,
1039 seed, seedlen);
1040 }
1041
1042 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1043 {
1044 return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
1045 OSSL_KDF_PARAM_DIGEST,
1046 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1047 }
1048
1049 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1050 const unsigned char *salt, int saltlen)
1051 {
1052 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1053 OSSL_KDF_PARAM_SALT,
1054 EVP_PKEY_OP_DERIVE,
1055 EVP_PKEY_CTRL_HKDF_SALT,
1056 salt, saltlen);
1057 }
1058
1059 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1060 const unsigned char *key, int keylen)
1061 {
1062 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1063 OSSL_KDF_PARAM_KEY,
1064 EVP_PKEY_OP_DERIVE,
1065 EVP_PKEY_CTRL_HKDF_KEY,
1066 key, keylen);
1067 }
1068
1069 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1070 const unsigned char *info, int infolen)
1071 {
1072 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1073 OSSL_KDF_PARAM_INFO,
1074 EVP_PKEY_OP_DERIVE,
1075 EVP_PKEY_CTRL_HKDF_INFO,
1076 info, infolen);
1077 }
1078
1079 int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1080 {
1081 OSSL_PARAM int_params[2], *p = int_params;
1082
1083 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1084 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1085 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1086 return -2;
1087 }
1088
1089 /* Code below to be removed when legacy support is dropped. */
1090 if (ctx->op.kex.algctx == NULL)
1091 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1092 EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1093 /* end of legacy support */
1094
1095 if (mode < 0) {
1096 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1097 return 0;
1098 }
1099
1100 *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1101 *p = OSSL_PARAM_construct_end();
1102
1103 return EVP_PKEY_CTX_set_params(ctx, int_params);
1104 }
1105
1106 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1107 int passlen)
1108 {
1109 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1110 OSSL_KDF_PARAM_PASSWORD,
1111 EVP_PKEY_OP_DERIVE,
1112 EVP_PKEY_CTRL_PASS,
1113 (const unsigned char *)pass, passlen);
1114 }
1115
1116 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1117 const unsigned char *salt, int saltlen)
1118 {
1119 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1120 OSSL_KDF_PARAM_SALT,
1121 EVP_PKEY_OP_DERIVE,
1122 EVP_PKEY_CTRL_SCRYPT_SALT,
1123 salt, saltlen);
1124 }
1125
1126 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1127 int op, int ctrl, uint64_t val)
1128 {
1129 OSSL_PARAM uint64_params[2], *p = uint64_params;
1130
1131 if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1132 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1133 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1134 return -2;
1135 }
1136
1137 /* Code below to be removed when legacy support is dropped. */
1138 if (ctx->op.kex.algctx == NULL)
1139 return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1140 /* end of legacy support */
1141
1142 *p++ = OSSL_PARAM_construct_uint64(param, &val);
1143 *p = OSSL_PARAM_construct_end();
1144
1145 return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1146 }
1147
1148 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1149 {
1150 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1151 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1152 n);
1153 }
1154
1155 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1156 {
1157 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1158 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1159 r);
1160 }
1161
1162 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1163 {
1164 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1165 EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1166 p);
1167 }
1168
1169 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1170 uint64_t maxmem_bytes)
1171 {
1172 return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1173 EVP_PKEY_OP_DERIVE,
1174 EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1175 maxmem_bytes);
1176 }
1177
1178 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1179 int keylen)
1180 {
1181 return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1182 OSSL_PKEY_PARAM_PRIV_KEY,
1183 EVP_PKEY_OP_KEYGEN,
1184 EVP_PKEY_CTRL_SET_MAC_KEY,
1185 key, keylen);
1186 }
1187
1188 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1189 {
1190 OSSL_PARAM params[2], *p = params;
1191
1192 if (ctx == NULL || op == NULL) {
1193 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1194 return 0;
1195 }
1196 if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1197 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1198 return -2;
1199 }
1200 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1201 (char *)op, 0);
1202 *p = OSSL_PARAM_construct_end();
1203 return EVP_PKEY_CTX_set_params(ctx, params);
1204 }
1205
1206 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1207 {
1208 return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1209 EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1210 }
1211
1212 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1213 {
1214 return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1215 }
1216
1217 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1218 {
1219 return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1220 EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1221 }
1222
1223 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1224 int cmd, int p1, void *p2)
1225 {
1226 int ret = 0;
1227
1228 /*
1229 * If the method has a |digest_custom| function, we can relax the
1230 * operation type check, since this can be called before the operation
1231 * is initialized.
1232 */
1233 if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1234 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1235 ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1236 return -1;
1237 }
1238
1239 if ((optype != -1) && !(ctx->operation & optype)) {
1240 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1241 return -1;
1242 }
1243 }
1244
1245 switch (evp_pkey_ctx_state(ctx)) {
1246 case EVP_PKEY_STATE_PROVIDER:
1247 return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1248 case EVP_PKEY_STATE_UNKNOWN:
1249 case EVP_PKEY_STATE_LEGACY:
1250 if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1251 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1252 return -2;
1253 }
1254 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1255 return -1;
1256
1257 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1258
1259 if (ret == -2)
1260 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1261 break;
1262 }
1263 return ret;
1264 }
1265
1266 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1267 int cmd, int p1, void *p2)
1268 {
1269 int ret = 0;
1270
1271 if (ctx == NULL) {
1272 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1273 return -2;
1274 }
1275 /* If unsupported, we don't want that reported here */
1276 ERR_set_mark();
1277 ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1278 cmd, NULL, p2, p1);
1279 if (ret == -2) {
1280 ERR_pop_to_mark();
1281 } else {
1282 ERR_clear_last_mark();
1283 /*
1284 * If there was an error, there was an error.
1285 * If the operation isn't initialized yet, we also return, as
1286 * the saved values will be used then anyway.
1287 */
1288 if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1289 return ret;
1290 }
1291 return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1292 }
1293
1294 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1295 int cmd, uint64_t value)
1296 {
1297 return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1298 }
1299
1300
1301 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1302 const char *name, const char *value)
1303 {
1304 int ret = 0;
1305
1306 if (ctx == NULL) {
1307 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1308 return -2;
1309 }
1310
1311 switch (evp_pkey_ctx_state(ctx)) {
1312 case EVP_PKEY_STATE_PROVIDER:
1313 return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1314 case EVP_PKEY_STATE_UNKNOWN:
1315 case EVP_PKEY_STATE_LEGACY:
1316 if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1317 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1318 return -2;
1319 }
1320 if (strcmp(name, "digest") == 0)
1321 ret = EVP_PKEY_CTX_md(ctx,
1322 EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1323 EVP_PKEY_CTRL_MD, value);
1324 else
1325 ret = ctx->pmeth->ctrl_str(ctx, name, value);
1326 break;
1327 }
1328
1329 return ret;
1330 }
1331
1332 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1333 const char *name, const char *value)
1334 {
1335 int ret = 0;
1336
1337 /* If unsupported, we don't want that reported here */
1338 ERR_set_mark();
1339 ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1340 name, value, strlen(value) + 1);
1341 if (ret == -2) {
1342 ERR_pop_to_mark();
1343 } else {
1344 ERR_clear_last_mark();
1345 /*
1346 * If there was an error, there was an error.
1347 * If the operation isn't initialized yet, we also return, as
1348 * the saved values will be used then anyway.
1349 */
1350 if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1351 return ret;
1352 }
1353
1354 return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1355 }
1356
1357 static int decode_cmd(int cmd, const char *name)
1358 {
1359 if (cmd == -1) {
1360 /*
1361 * The consequence of the assertion not being true is that this
1362 * function will return -1, which will cause the calling functions
1363 * to signal that the command is unsupported... in non-debug mode.
1364 */
1365 if (ossl_assert(name != NULL))
1366 if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1367 cmd = EVP_PKEY_CTRL_SET1_ID;
1368 }
1369
1370 return cmd;
1371 }
1372
1373 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1374 int keytype, int optype,
1375 int cmd, const char *name,
1376 const void *data, size_t data_len)
1377 {
1378 /*
1379 * Check that it's one of the supported commands. The ctrl commands
1380 * number cases here must correspond to the cases in the bottom switch
1381 * in this function.
1382 */
1383 switch (cmd = decode_cmd(cmd, name)) {
1384 case EVP_PKEY_CTRL_SET1_ID:
1385 break;
1386 default:
1387 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1388 return -2;
1389 }
1390
1391 if (keytype != -1) {
1392 switch (evp_pkey_ctx_state(ctx)) {
1393 case EVP_PKEY_STATE_PROVIDER:
1394 if (ctx->keymgmt == NULL) {
1395 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1396 return -2;
1397 }
1398 if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1399 evp_pkey_type2name(keytype))) {
1400 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1401 return -1;
1402 }
1403 break;
1404 case EVP_PKEY_STATE_UNKNOWN:
1405 case EVP_PKEY_STATE_LEGACY:
1406 if (ctx->pmeth == NULL) {
1407 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1408 return -2;
1409 }
1410 if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1411 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1412 return -1;
1413 }
1414 break;
1415 }
1416 }
1417 if (optype != -1 && (ctx->operation & optype) == 0) {
1418 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1419 return -1;
1420 }
1421
1422 switch (cmd) {
1423 case EVP_PKEY_CTRL_SET1_ID:
1424 evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1425 if (name != NULL) {
1426 ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1427 if (ctx->cached_parameters.dist_id_name == NULL)
1428 return 0;
1429 }
1430 if (data_len > 0) {
1431 ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1432 if (ctx->cached_parameters.dist_id == NULL)
1433 return 0;
1434 }
1435 ctx->cached_parameters.dist_id_set = 1;
1436 ctx->cached_parameters.dist_id_len = data_len;
1437 break;
1438 }
1439 return 1;
1440 }
1441
1442 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1443 int cmd, const char *name)
1444 {
1445 cmd = decode_cmd(cmd, name);
1446 switch (cmd) {
1447 case EVP_PKEY_CTRL_SET1_ID:
1448 OPENSSL_free(ctx->cached_parameters.dist_id);
1449 OPENSSL_free(ctx->cached_parameters.dist_id_name);
1450 ctx->cached_parameters.dist_id = NULL;
1451 ctx->cached_parameters.dist_id_name = NULL;
1452 break;
1453 }
1454 }
1455
1456 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1457 {
1458 evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1459 }
1460
1461 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1462 {
1463 int ret = 1;
1464
1465 if (ret && ctx->cached_parameters.dist_id_set) {
1466 const char *name = ctx->cached_parameters.dist_id_name;
1467 const void *val = ctx->cached_parameters.dist_id;
1468 size_t len = ctx->cached_parameters.dist_id_len;
1469
1470 if (name != NULL)
1471 ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1472 else
1473 ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1474 EVP_PKEY_CTRL_SET1_ID,
1475 (int)len, (void *)val);
1476 }
1477
1478 return ret;
1479 }
1480
1481 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1482 {
1483 return ctx->libctx;
1484 }
1485
1486 const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx)
1487 {
1488 return ctx->propquery;
1489 }
1490
1491 const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx)
1492 {
1493 if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1494 if (ctx->op.sig.signature != NULL)
1495 return EVP_SIGNATURE_get0_provider(ctx->op.sig.signature);
1496 } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1497 if (ctx->op.kex.exchange != NULL)
1498 return EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange);
1499 } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1500 if (ctx->op.encap.kem != NULL)
1501 return EVP_KEM_get0_provider(ctx->op.encap.kem);
1502 } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
1503 if (ctx->op.ciph.cipher != NULL)
1504 return EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher);
1505 } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1506 if (ctx->keymgmt != NULL)
1507 return EVP_KEYMGMT_get0_provider(ctx->keymgmt);
1508 }
1509
1510 return NULL;
1511 }
1512
1513 /* Utility functions to send a string of hex string to a ctrl */
1514
1515 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1516 {
1517 size_t len;
1518
1519 len = strlen(str);
1520 if (len > INT_MAX)
1521 return -1;
1522 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1523 }
1524
1525 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1526 {
1527 unsigned char *bin;
1528 long binlen;
1529 int rv = -1;
1530
1531 bin = OPENSSL_hexstr2buf(hex, &binlen);
1532 if (bin == NULL)
1533 return 0;
1534 if (binlen <= INT_MAX)
1535 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1536 OPENSSL_free(bin);
1537 return rv;
1538 }
1539
1540 /* Pass a message digest to a ctrl */
1541 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1542 {
1543 const EVP_MD *m;
1544
1545 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1546 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1547 return 0;
1548 }
1549 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1550 }
1551
1552 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1553 {
1554 return ctx->operation;
1555 }
1556
1557 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1558 {
1559 ctx->keygen_info = dat;
1560 ctx->keygen_info_count = datlen;
1561 }
1562
1563 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1564 {
1565 ctx->data = data;
1566 }
1567
1568 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1569 {
1570 return ctx->data;
1571 }
1572
1573 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1574 {
1575 return ctx->pkey;
1576 }
1577
1578 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1579 {
1580 return ctx->peerkey;
1581 }
1582
1583 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1584 {
1585 ctx->app_data = data;
1586 }
1587
1588 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1589 {
1590 return ctx->app_data;
1591 }
1592
1593 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1594 int (*init) (EVP_PKEY_CTX *ctx))
1595 {
1596 pmeth->init = init;
1597 }
1598
1599 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1600 int (*copy) (EVP_PKEY_CTX *dst,
1601 const EVP_PKEY_CTX *src))
1602 {
1603 pmeth->copy = copy;
1604 }
1605
1606 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1607 void (*cleanup) (EVP_PKEY_CTX *ctx))
1608 {
1609 pmeth->cleanup = cleanup;
1610 }
1611
1612 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1613 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1614 int (*paramgen) (EVP_PKEY_CTX *ctx,
1615 EVP_PKEY *pkey))
1616 {
1617 pmeth->paramgen_init = paramgen_init;
1618 pmeth->paramgen = paramgen;
1619 }
1620
1621 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1622 int (*keygen_init) (EVP_PKEY_CTX *ctx),
1623 int (*keygen) (EVP_PKEY_CTX *ctx,
1624 EVP_PKEY *pkey))
1625 {
1626 pmeth->keygen_init = keygen_init;
1627 pmeth->keygen = keygen;
1628 }
1629
1630 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1631 int (*sign_init) (EVP_PKEY_CTX *ctx),
1632 int (*sign) (EVP_PKEY_CTX *ctx,
1633 unsigned char *sig, size_t *siglen,
1634 const unsigned char *tbs,
1635 size_t tbslen))
1636 {
1637 pmeth->sign_init = sign_init;
1638 pmeth->sign = sign;
1639 }
1640
1641 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1642 int (*verify_init) (EVP_PKEY_CTX *ctx),
1643 int (*verify) (EVP_PKEY_CTX *ctx,
1644 const unsigned char *sig,
1645 size_t siglen,
1646 const unsigned char *tbs,
1647 size_t tbslen))
1648 {
1649 pmeth->verify_init = verify_init;
1650 pmeth->verify = verify;
1651 }
1652
1653 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1654 int (*verify_recover_init) (EVP_PKEY_CTX
1655 *ctx),
1656 int (*verify_recover) (EVP_PKEY_CTX
1657 *ctx,
1658 unsigned char
1659 *sig,
1660 size_t *siglen,
1661 const unsigned
1662 char *tbs,
1663 size_t tbslen))
1664 {
1665 pmeth->verify_recover_init = verify_recover_init;
1666 pmeth->verify_recover = verify_recover;
1667 }
1668
1669 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1670 int (*signctx_init) (EVP_PKEY_CTX *ctx,
1671 EVP_MD_CTX *mctx),
1672 int (*signctx) (EVP_PKEY_CTX *ctx,
1673 unsigned char *sig,
1674 size_t *siglen,
1675 EVP_MD_CTX *mctx))
1676 {
1677 pmeth->signctx_init = signctx_init;
1678 pmeth->signctx = signctx;
1679 }
1680
1681 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1682 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1683 EVP_MD_CTX *mctx),
1684 int (*verifyctx) (EVP_PKEY_CTX *ctx,
1685 const unsigned char *sig,
1686 int siglen,
1687 EVP_MD_CTX *mctx))
1688 {
1689 pmeth->verifyctx_init = verifyctx_init;
1690 pmeth->verifyctx = verifyctx;
1691 }
1692
1693 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1694 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1695 int (*encryptfn) (EVP_PKEY_CTX *ctx,
1696 unsigned char *out,
1697 size_t *outlen,
1698 const unsigned char *in,
1699 size_t inlen))
1700 {
1701 pmeth->encrypt_init = encrypt_init;
1702 pmeth->encrypt = encryptfn;
1703 }
1704
1705 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1706 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1707 int (*decrypt) (EVP_PKEY_CTX *ctx,
1708 unsigned char *out,
1709 size_t *outlen,
1710 const unsigned char *in,
1711 size_t inlen))
1712 {
1713 pmeth->decrypt_init = decrypt_init;
1714 pmeth->decrypt = decrypt;
1715 }
1716
1717 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1718 int (*derive_init) (EVP_PKEY_CTX *ctx),
1719 int (*derive) (EVP_PKEY_CTX *ctx,
1720 unsigned char *key,
1721 size_t *keylen))
1722 {
1723 pmeth->derive_init = derive_init;
1724 pmeth->derive = derive;
1725 }
1726
1727 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1728 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1729 void *p2),
1730 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1731 const char *type,
1732 const char *value))
1733 {
1734 pmeth->ctrl = ctrl;
1735 pmeth->ctrl_str = ctrl_str;
1736 }
1737
1738 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1739 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1740 const unsigned char *tbs, size_t tbslen))
1741 {
1742 pmeth->digestsign = digestsign;
1743 }
1744
1745 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1746 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1747 size_t siglen, const unsigned char *tbs,
1748 size_t tbslen))
1749 {
1750 pmeth->digestverify = digestverify;
1751 }
1752
1753 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1754 int (*check) (EVP_PKEY *pkey))
1755 {
1756 pmeth->check = check;
1757 }
1758
1759 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1760 int (*check) (EVP_PKEY *pkey))
1761 {
1762 pmeth->public_check = check;
1763 }
1764
1765 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1766 int (*check) (EVP_PKEY *pkey))
1767 {
1768 pmeth->param_check = check;
1769 }
1770
1771 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1772 int (*digest_custom) (EVP_PKEY_CTX *ctx,
1773 EVP_MD_CTX *mctx))
1774 {
1775 pmeth->digest_custom = digest_custom;
1776 }
1777
1778 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1779 int (**pinit) (EVP_PKEY_CTX *ctx))
1780 {
1781 *pinit = pmeth->init;
1782 }
1783
1784 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1785 int (**pcopy) (EVP_PKEY_CTX *dst,
1786 const EVP_PKEY_CTX *src))
1787 {
1788 *pcopy = pmeth->copy;
1789 }
1790
1791 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1792 void (**pcleanup) (EVP_PKEY_CTX *ctx))
1793 {
1794 *pcleanup = pmeth->cleanup;
1795 }
1796
1797 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1798 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1799 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1800 EVP_PKEY *pkey))
1801 {
1802 if (pparamgen_init)
1803 *pparamgen_init = pmeth->paramgen_init;
1804 if (pparamgen)
1805 *pparamgen = pmeth->paramgen;
1806 }
1807
1808 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1809 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1810 int (**pkeygen) (EVP_PKEY_CTX *ctx,
1811 EVP_PKEY *pkey))
1812 {
1813 if (pkeygen_init)
1814 *pkeygen_init = pmeth->keygen_init;
1815 if (pkeygen)
1816 *pkeygen = pmeth->keygen;
1817 }
1818
1819 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1820 int (**psign_init) (EVP_PKEY_CTX *ctx),
1821 int (**psign) (EVP_PKEY_CTX *ctx,
1822 unsigned char *sig, size_t *siglen,
1823 const unsigned char *tbs,
1824 size_t tbslen))
1825 {
1826 if (psign_init)
1827 *psign_init = pmeth->sign_init;
1828 if (psign)
1829 *psign = pmeth->sign;
1830 }
1831
1832 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1833 int (**pverify_init) (EVP_PKEY_CTX *ctx),
1834 int (**pverify) (EVP_PKEY_CTX *ctx,
1835 const unsigned char *sig,
1836 size_t siglen,
1837 const unsigned char *tbs,
1838 size_t tbslen))
1839 {
1840 if (pverify_init)
1841 *pverify_init = pmeth->verify_init;
1842 if (pverify)
1843 *pverify = pmeth->verify;
1844 }
1845
1846 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1847 int (**pverify_recover_init) (EVP_PKEY_CTX
1848 *ctx),
1849 int (**pverify_recover) (EVP_PKEY_CTX
1850 *ctx,
1851 unsigned char
1852 *sig,
1853 size_t *siglen,
1854 const unsigned
1855 char *tbs,
1856 size_t tbslen))
1857 {
1858 if (pverify_recover_init)
1859 *pverify_recover_init = pmeth->verify_recover_init;
1860 if (pverify_recover)
1861 *pverify_recover = pmeth->verify_recover;
1862 }
1863
1864 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1865 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1866 EVP_MD_CTX *mctx),
1867 int (**psignctx) (EVP_PKEY_CTX *ctx,
1868 unsigned char *sig,
1869 size_t *siglen,
1870 EVP_MD_CTX *mctx))
1871 {
1872 if (psignctx_init)
1873 *psignctx_init = pmeth->signctx_init;
1874 if (psignctx)
1875 *psignctx = pmeth->signctx;
1876 }
1877
1878 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1879 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1880 EVP_MD_CTX *mctx),
1881 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1882 const unsigned char *sig,
1883 int siglen,
1884 EVP_MD_CTX *mctx))
1885 {
1886 if (pverifyctx_init)
1887 *pverifyctx_init = pmeth->verifyctx_init;
1888 if (pverifyctx)
1889 *pverifyctx = pmeth->verifyctx;
1890 }
1891
1892 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1893 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1894 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1895 unsigned char *out,
1896 size_t *outlen,
1897 const unsigned char *in,
1898 size_t inlen))
1899 {
1900 if (pencrypt_init)
1901 *pencrypt_init = pmeth->encrypt_init;
1902 if (pencryptfn)
1903 *pencryptfn = pmeth->encrypt;
1904 }
1905
1906 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1907 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1908 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1909 unsigned char *out,
1910 size_t *outlen,
1911 const unsigned char *in,
1912 size_t inlen))
1913 {
1914 if (pdecrypt_init)
1915 *pdecrypt_init = pmeth->decrypt_init;
1916 if (pdecrypt)
1917 *pdecrypt = pmeth->decrypt;
1918 }
1919
1920 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1921 int (**pderive_init) (EVP_PKEY_CTX *ctx),
1922 int (**pderive) (EVP_PKEY_CTX *ctx,
1923 unsigned char *key,
1924 size_t *keylen))
1925 {
1926 if (pderive_init)
1927 *pderive_init = pmeth->derive_init;
1928 if (pderive)
1929 *pderive = pmeth->derive;
1930 }
1931
1932 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1933 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1934 void *p2),
1935 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1936 const char *type,
1937 const char *value))
1938 {
1939 if (pctrl)
1940 *pctrl = pmeth->ctrl;
1941 if (pctrl_str)
1942 *pctrl_str = pmeth->ctrl_str;
1943 }
1944
1945 void EVP_PKEY_meth_get_digestsign(const EVP_PKEY_METHOD *pmeth,
1946 int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1947 const unsigned char *tbs, size_t tbslen))
1948 {
1949 if (digestsign)
1950 *digestsign = pmeth->digestsign;
1951 }
1952
1953 void EVP_PKEY_meth_get_digestverify(const EVP_PKEY_METHOD *pmeth,
1954 int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1955 size_t siglen, const unsigned char *tbs,
1956 size_t tbslen))
1957 {
1958 if (digestverify)
1959 *digestverify = pmeth->digestverify;
1960 }
1961
1962 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1963 int (**pcheck) (EVP_PKEY *pkey))
1964 {
1965 if (pcheck != NULL)
1966 *pcheck = pmeth->check;
1967 }
1968
1969 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1970 int (**pcheck) (EVP_PKEY *pkey))
1971 {
1972 if (pcheck != NULL)
1973 *pcheck = pmeth->public_check;
1974 }
1975
1976 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1977 int (**pcheck) (EVP_PKEY *pkey))
1978 {
1979 if (pcheck != NULL)
1980 *pcheck = pmeth->param_check;
1981 }
1982
1983 void EVP_PKEY_meth_get_digest_custom(const EVP_PKEY_METHOD *pmeth,
1984 int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1985 EVP_MD_CTX *mctx))
1986 {
1987 if (pdigest_custom != NULL)
1988 *pdigest_custom = pmeth->digest_custom;
1989 }
1990
1991 #endif /* FIPS_MODULE */
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