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 #include <stdio.h>
11 #include <stdlib.h>
12 #include <openssl/objects.h>
13 #include <openssl/evp.h>
14 #include "internal/cryptlib.h"
15 #include "internal/provider.h"
16 #include "internal/core.h"
17 #include "crypto/evp.h"
18 #include "evp_local.h"
19
evp_pkey_asym_cipher_init(EVP_PKEY_CTX * ctx,int operation,const OSSL_PARAM params[])20 static int evp_pkey_asym_cipher_init(EVP_PKEY_CTX *ctx, int operation,
21 const OSSL_PARAM params[])
22 {
23 int ret = 0;
24 void *provkey = NULL;
25 EVP_ASYM_CIPHER *cipher = NULL;
26 EVP_KEYMGMT *tmp_keymgmt = NULL;
27 const OSSL_PROVIDER *tmp_prov = NULL;
28 const char *supported_ciph = NULL;
29 int iter;
30
31 if (ctx == NULL) {
32 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
33 return -2;
34 }
35
36 evp_pkey_ctx_free_old_ops(ctx);
37 ctx->operation = operation;
38
39 ERR_set_mark();
40
41 if (evp_pkey_ctx_is_legacy(ctx))
42 goto legacy;
43
44 if (ctx->pkey == NULL) {
45 ERR_clear_last_mark();
46 ERR_raise(ERR_LIB_EVP, EVP_R_NO_KEY_SET);
47 goto err;
48 }
49
50 /*
51 * Try to derive the supported asym cipher from |ctx->keymgmt|.
52 */
53 if (!ossl_assert(ctx->pkey->keymgmt == NULL
54 || ctx->pkey->keymgmt == ctx->keymgmt)) {
55 ERR_clear_last_mark();
56 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
57 goto err;
58 }
59 supported_ciph
60 = evp_keymgmt_util_query_operation_name(ctx->keymgmt,
61 OSSL_OP_ASYM_CIPHER);
62 if (supported_ciph == NULL) {
63 ERR_clear_last_mark();
64 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
65 goto err;
66 }
67
68 /*
69 * We perform two iterations:
70 *
71 * 1. Do the normal asym cipher fetch, using the fetching data given by
72 * the EVP_PKEY_CTX.
73 * 2. Do the provider specific asym cipher fetch, from the same provider
74 * as |ctx->keymgmt|
75 *
76 * We then try to fetch the keymgmt from the same provider as the
77 * asym cipher, and try to export |ctx->pkey| to that keymgmt (when
78 * this keymgmt happens to be the same as |ctx->keymgmt|, the export
79 * is a no-op, but we call it anyway to not complicate the code even
80 * more).
81 * If the export call succeeds (returns a non-NULL provider key pointer),
82 * we're done and can perform the operation itself. If not, we perform
83 * the second iteration, or jump to legacy.
84 */
85 for (iter = 1, provkey = NULL; iter < 3 && provkey == NULL; iter++) {
86 EVP_KEYMGMT *tmp_keymgmt_tofree;
87
88 /*
89 * If we're on the second iteration, free the results from the first.
90 * They are NULL on the first iteration, so no need to check what
91 * iteration we're on.
92 */
93 EVP_ASYM_CIPHER_free(cipher);
94 EVP_KEYMGMT_free(tmp_keymgmt);
95
96 switch (iter) {
97 case 1:
98 cipher = EVP_ASYM_CIPHER_fetch(ctx->libctx, supported_ciph,
99 ctx->propquery);
100 if (cipher != NULL)
101 tmp_prov = EVP_ASYM_CIPHER_get0_provider(cipher);
102 break;
103 case 2:
104 tmp_prov = EVP_KEYMGMT_get0_provider(ctx->keymgmt);
105 cipher =
106 evp_asym_cipher_fetch_from_prov((OSSL_PROVIDER *)tmp_prov,
107 supported_ciph, ctx->propquery);
108 if (cipher == NULL)
109 goto legacy;
110 break;
111 }
112 if (cipher == NULL)
113 continue;
114
115 /*
116 * Ensure that the key is provided, either natively, or as a cached
117 * export. We start by fetching the keymgmt with the same name as
118 * |ctx->pkey|, but from the provider of the asym cipher method, using
119 * the same property query as when fetching the asym cipher method.
120 * With the keymgmt we found (if we did), we try to export |ctx->pkey|
121 * to it (evp_pkey_export_to_provider() is smart enough to only actually
122 * export it if |tmp_keymgmt| is different from |ctx->pkey|'s keymgmt)
123 */
124 tmp_keymgmt_tofree = tmp_keymgmt
125 = evp_keymgmt_fetch_from_prov((OSSL_PROVIDER *)tmp_prov,
126 EVP_KEYMGMT_get0_name(ctx->keymgmt),
127 ctx->propquery);
128 if (tmp_keymgmt != NULL)
129 provkey = evp_pkey_export_to_provider(ctx->pkey, ctx->libctx,
130 &tmp_keymgmt, ctx->propquery);
131 if (tmp_keymgmt == NULL)
132 EVP_KEYMGMT_free(tmp_keymgmt_tofree);
133 }
134
135 if (provkey == NULL) {
136 EVP_ASYM_CIPHER_free(cipher);
137 goto legacy;
138 }
139
140 ERR_pop_to_mark();
141
142 /* No more legacy from here down to legacy: */
143
144 ctx->op.ciph.cipher = cipher;
145 ctx->op.ciph.algctx = cipher->newctx(ossl_provider_ctx(cipher->prov));
146 if (ctx->op.ciph.algctx == NULL) {
147 /* The provider key can stay in the cache */
148 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
149 goto err;
150 }
151
152 switch (operation) {
153 case EVP_PKEY_OP_ENCRYPT:
154 if (cipher->encrypt_init == NULL) {
155 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
156 ret = -2;
157 goto err;
158 }
159 ret = cipher->encrypt_init(ctx->op.ciph.algctx, provkey, params);
160 break;
161 case EVP_PKEY_OP_DECRYPT:
162 if (cipher->decrypt_init == NULL) {
163 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
164 ret = -2;
165 goto err;
166 }
167 ret = cipher->decrypt_init(ctx->op.ciph.algctx, provkey, params);
168 break;
169 default:
170 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
171 goto err;
172 }
173
174 if (ret <= 0)
175 goto err;
176 EVP_KEYMGMT_free(tmp_keymgmt);
177 return 1;
178
179 legacy:
180 /*
181 * If we don't have the full support we need with provided methods,
182 * let's go see if legacy does.
183 */
184 ERR_pop_to_mark();
185 EVP_KEYMGMT_free(tmp_keymgmt);
186 tmp_keymgmt = NULL;
187
188 if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
189 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
190 return -2;
191 }
192 switch (ctx->operation) {
193 case EVP_PKEY_OP_ENCRYPT:
194 if (ctx->pmeth->encrypt_init == NULL)
195 return 1;
196 ret = ctx->pmeth->encrypt_init(ctx);
197 break;
198 case EVP_PKEY_OP_DECRYPT:
199 if (ctx->pmeth->decrypt_init == NULL)
200 return 1;
201 ret = ctx->pmeth->decrypt_init(ctx);
202 break;
203 default:
204 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
205 ret = -1;
206 }
207
208 err:
209 if (ret <= 0) {
210 evp_pkey_ctx_free_old_ops(ctx);
211 ctx->operation = EVP_PKEY_OP_UNDEFINED;
212 }
213 EVP_KEYMGMT_free(tmp_keymgmt);
214 return ret;
215 }
216
EVP_PKEY_encrypt_init(EVP_PKEY_CTX * ctx)217 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
218 {
219 return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_ENCRYPT, NULL);
220 }
221
EVP_PKEY_encrypt_init_ex(EVP_PKEY_CTX * ctx,const OSSL_PARAM params[])222 int EVP_PKEY_encrypt_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
223 {
224 return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_ENCRYPT, params);
225 }
226
EVP_PKEY_encrypt(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen)227 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
228 unsigned char *out, size_t *outlen,
229 const unsigned char *in, size_t inlen)
230 {
231 int ret;
232
233 if (ctx == NULL) {
234 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
235 return -2;
236 }
237
238 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
239 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
240 return -1;
241 }
242
243 if (ctx->op.ciph.algctx == NULL)
244 goto legacy;
245
246 ret = ctx->op.ciph.cipher->encrypt(ctx->op.ciph.algctx, out, outlen,
247 (out == NULL ? 0 : *outlen), in, inlen);
248 return ret;
249
250 legacy:
251 if (ctx->pmeth == NULL || ctx->pmeth->encrypt == NULL) {
252 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
253 return -2;
254 }
255 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
256 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
257 }
258
EVP_PKEY_decrypt_init(EVP_PKEY_CTX * ctx)259 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
260 {
261 return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_DECRYPT, NULL);
262 }
263
EVP_PKEY_decrypt_init_ex(EVP_PKEY_CTX * ctx,const OSSL_PARAM params[])264 int EVP_PKEY_decrypt_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
265 {
266 return evp_pkey_asym_cipher_init(ctx, EVP_PKEY_OP_DECRYPT, params);
267 }
268
EVP_PKEY_decrypt(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen)269 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
270 unsigned char *out, size_t *outlen,
271 const unsigned char *in, size_t inlen)
272 {
273 int ret;
274
275 if (ctx == NULL) {
276 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
277 return -2;
278 }
279
280 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
281 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
282 return -1;
283 }
284
285 if (ctx->op.ciph.algctx == NULL)
286 goto legacy;
287
288 ret = ctx->op.ciph.cipher->decrypt(ctx->op.ciph.algctx, out, outlen,
289 (out == NULL ? 0 : *outlen), in, inlen);
290 return ret;
291
292 legacy:
293 if (ctx->pmeth == NULL || ctx->pmeth->decrypt == NULL) {
294 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
295 return -2;
296 }
297 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
298 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
299 }
300
301 /* decrypt to new buffer of dynamic size, checking any pre-determined size */
evp_pkey_decrypt_alloc(EVP_PKEY_CTX * ctx,unsigned char ** outp,size_t * outlenp,size_t expected_outlen,const unsigned char * in,size_t inlen)302 int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
303 size_t *outlenp, size_t expected_outlen,
304 const unsigned char *in, size_t inlen)
305 {
306 if (EVP_PKEY_decrypt(ctx, NULL, outlenp, in, inlen) <= 0
307 || (*outp = OPENSSL_malloc(*outlenp)) == NULL)
308 return -1;
309 if (EVP_PKEY_decrypt(ctx, *outp, outlenp, in, inlen) <= 0
310 || *outlenp == 0
311 || (expected_outlen != 0 && *outlenp != expected_outlen)) {
312 ERR_raise(ERR_LIB_EVP, ERR_R_EVP_LIB);
313 OPENSSL_clear_free(*outp, *outlenp);
314 *outp = NULL;
315 return 0;
316 }
317 return 1;
318 }
319
evp_asym_cipher_new(OSSL_PROVIDER * prov)320 static EVP_ASYM_CIPHER *evp_asym_cipher_new(OSSL_PROVIDER *prov)
321 {
322 EVP_ASYM_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_ASYM_CIPHER));
323
324 if (cipher == NULL)
325 return NULL;
326
327 if (!CRYPTO_NEW_REF(&cipher->refcnt, 1)) {
328 OPENSSL_free(cipher);
329 return NULL;
330 }
331 cipher->prov = prov;
332 ossl_provider_up_ref(prov);
333
334 return cipher;
335 }
336
evp_asym_cipher_from_algorithm(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov)337 static void *evp_asym_cipher_from_algorithm(int name_id,
338 const OSSL_ALGORITHM *algodef,
339 OSSL_PROVIDER *prov)
340 {
341 const OSSL_DISPATCH *fns = algodef->implementation;
342 EVP_ASYM_CIPHER *cipher = NULL;
343 int ctxfncnt = 0, encfncnt = 0, decfncnt = 0;
344 int gparamfncnt = 0, sparamfncnt = 0;
345
346 if ((cipher = evp_asym_cipher_new(prov)) == NULL) {
347 ERR_raise(ERR_LIB_EVP, ERR_R_EVP_LIB);
348 goto err;
349 }
350
351 cipher->name_id = name_id;
352 if ((cipher->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL)
353 goto err;
354 cipher->description = algodef->algorithm_description;
355
356 for (; fns->function_id != 0; fns++) {
357 switch (fns->function_id) {
358 case OSSL_FUNC_ASYM_CIPHER_NEWCTX:
359 if (cipher->newctx != NULL)
360 break;
361 cipher->newctx = OSSL_FUNC_asym_cipher_newctx(fns);
362 ctxfncnt++;
363 break;
364 case OSSL_FUNC_ASYM_CIPHER_ENCRYPT_INIT:
365 if (cipher->encrypt_init != NULL)
366 break;
367 cipher->encrypt_init = OSSL_FUNC_asym_cipher_encrypt_init(fns);
368 encfncnt++;
369 break;
370 case OSSL_FUNC_ASYM_CIPHER_ENCRYPT:
371 if (cipher->encrypt != NULL)
372 break;
373 cipher->encrypt = OSSL_FUNC_asym_cipher_encrypt(fns);
374 encfncnt++;
375 break;
376 case OSSL_FUNC_ASYM_CIPHER_DECRYPT_INIT:
377 if (cipher->decrypt_init != NULL)
378 break;
379 cipher->decrypt_init = OSSL_FUNC_asym_cipher_decrypt_init(fns);
380 decfncnt++;
381 break;
382 case OSSL_FUNC_ASYM_CIPHER_DECRYPT:
383 if (cipher->decrypt != NULL)
384 break;
385 cipher->decrypt = OSSL_FUNC_asym_cipher_decrypt(fns);
386 decfncnt++;
387 break;
388 case OSSL_FUNC_ASYM_CIPHER_FREECTX:
389 if (cipher->freectx != NULL)
390 break;
391 cipher->freectx = OSSL_FUNC_asym_cipher_freectx(fns);
392 ctxfncnt++;
393 break;
394 case OSSL_FUNC_ASYM_CIPHER_DUPCTX:
395 if (cipher->dupctx != NULL)
396 break;
397 cipher->dupctx = OSSL_FUNC_asym_cipher_dupctx(fns);
398 break;
399 case OSSL_FUNC_ASYM_CIPHER_GET_CTX_PARAMS:
400 if (cipher->get_ctx_params != NULL)
401 break;
402 cipher->get_ctx_params
403 = OSSL_FUNC_asym_cipher_get_ctx_params(fns);
404 gparamfncnt++;
405 break;
406 case OSSL_FUNC_ASYM_CIPHER_GETTABLE_CTX_PARAMS:
407 if (cipher->gettable_ctx_params != NULL)
408 break;
409 cipher->gettable_ctx_params
410 = OSSL_FUNC_asym_cipher_gettable_ctx_params(fns);
411 gparamfncnt++;
412 break;
413 case OSSL_FUNC_ASYM_CIPHER_SET_CTX_PARAMS:
414 if (cipher->set_ctx_params != NULL)
415 break;
416 cipher->set_ctx_params
417 = OSSL_FUNC_asym_cipher_set_ctx_params(fns);
418 sparamfncnt++;
419 break;
420 case OSSL_FUNC_ASYM_CIPHER_SETTABLE_CTX_PARAMS:
421 if (cipher->settable_ctx_params != NULL)
422 break;
423 cipher->settable_ctx_params
424 = OSSL_FUNC_asym_cipher_settable_ctx_params(fns);
425 sparamfncnt++;
426 break;
427 }
428 }
429 if (ctxfncnt != 2
430 || (encfncnt != 0 && encfncnt != 2)
431 || (decfncnt != 0 && decfncnt != 2)
432 || (encfncnt != 2 && decfncnt != 2)
433 || (gparamfncnt != 0 && gparamfncnt != 2)
434 || (sparamfncnt != 0 && sparamfncnt != 2)) {
435 /*
436 * In order to be a consistent set of functions we must have at least
437 * a set of context functions (newctx and freectx) as well as a pair of
438 * "cipher" functions: (encrypt_init, encrypt) or
439 * (decrypt_init decrypt). set_ctx_params and settable_ctx_params are
440 * optional, but if one of them is present then the other one must also
441 * be present. The same applies to get_ctx_params and
442 * gettable_ctx_params. The dupctx function is optional.
443 */
444 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
445 goto err;
446 }
447
448 return cipher;
449 err:
450 EVP_ASYM_CIPHER_free(cipher);
451 return NULL;
452 }
453
EVP_ASYM_CIPHER_free(EVP_ASYM_CIPHER * cipher)454 void EVP_ASYM_CIPHER_free(EVP_ASYM_CIPHER *cipher)
455 {
456 int i;
457
458 if (cipher == NULL)
459 return;
460 CRYPTO_DOWN_REF(&cipher->refcnt, &i);
461 if (i > 0)
462 return;
463 OPENSSL_free(cipher->type_name);
464 ossl_provider_free(cipher->prov);
465 CRYPTO_FREE_REF(&cipher->refcnt);
466 OPENSSL_free(cipher);
467 }
468
EVP_ASYM_CIPHER_up_ref(EVP_ASYM_CIPHER * cipher)469 int EVP_ASYM_CIPHER_up_ref(EVP_ASYM_CIPHER *cipher)
470 {
471 int ref = 0;
472
473 CRYPTO_UP_REF(&cipher->refcnt, &ref);
474 return 1;
475 }
476
EVP_ASYM_CIPHER_get0_provider(const EVP_ASYM_CIPHER * cipher)477 OSSL_PROVIDER *EVP_ASYM_CIPHER_get0_provider(const EVP_ASYM_CIPHER *cipher)
478 {
479 return cipher->prov;
480 }
481
EVP_ASYM_CIPHER_fetch(OSSL_LIB_CTX * ctx,const char * algorithm,const char * properties)482 EVP_ASYM_CIPHER *EVP_ASYM_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
483 const char *properties)
484 {
485 return evp_generic_fetch(ctx, OSSL_OP_ASYM_CIPHER, algorithm, properties,
486 evp_asym_cipher_from_algorithm,
487 (int (*)(void *))EVP_ASYM_CIPHER_up_ref,
488 (void (*)(void *))EVP_ASYM_CIPHER_free);
489 }
490
evp_asym_cipher_fetch_from_prov(OSSL_PROVIDER * prov,const char * algorithm,const char * properties)491 EVP_ASYM_CIPHER *evp_asym_cipher_fetch_from_prov(OSSL_PROVIDER *prov,
492 const char *algorithm,
493 const char *properties)
494 {
495 return evp_generic_fetch_from_prov(prov, OSSL_OP_ASYM_CIPHER,
496 algorithm, properties,
497 evp_asym_cipher_from_algorithm,
498 (int (*)(void *))EVP_ASYM_CIPHER_up_ref,
499 (void (*)(void *))EVP_ASYM_CIPHER_free);
500 }
501
EVP_ASYM_CIPHER_is_a(const EVP_ASYM_CIPHER * cipher,const char * name)502 int EVP_ASYM_CIPHER_is_a(const EVP_ASYM_CIPHER *cipher, const char *name)
503 {
504 return evp_is_a(cipher->prov, cipher->name_id, NULL, name);
505 }
506
evp_asym_cipher_get_number(const EVP_ASYM_CIPHER * cipher)507 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher)
508 {
509 return cipher->name_id;
510 }
511
EVP_ASYM_CIPHER_get0_name(const EVP_ASYM_CIPHER * cipher)512 const char *EVP_ASYM_CIPHER_get0_name(const EVP_ASYM_CIPHER *cipher)
513 {
514 return cipher->type_name;
515 }
516
EVP_ASYM_CIPHER_get0_description(const EVP_ASYM_CIPHER * cipher)517 const char *EVP_ASYM_CIPHER_get0_description(const EVP_ASYM_CIPHER *cipher)
518 {
519 return cipher->description;
520 }
521
EVP_ASYM_CIPHER_do_all_provided(OSSL_LIB_CTX * libctx,void (* fn)(EVP_ASYM_CIPHER * cipher,void * arg),void * arg)522 void EVP_ASYM_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
523 void (*fn)(EVP_ASYM_CIPHER *cipher,
524 void *arg),
525 void *arg)
526 {
527 evp_generic_do_all(libctx, OSSL_OP_ASYM_CIPHER,
528 (void (*)(void *, void *))fn, arg,
529 evp_asym_cipher_from_algorithm,
530 (int (*)(void *))EVP_ASYM_CIPHER_up_ref,
531 (void (*)(void *))EVP_ASYM_CIPHER_free);
532 }
533
534
EVP_ASYM_CIPHER_names_do_all(const EVP_ASYM_CIPHER * cipher,void (* fn)(const char * name,void * data),void * data)535 int EVP_ASYM_CIPHER_names_do_all(const EVP_ASYM_CIPHER *cipher,
536 void (*fn)(const char *name, void *data),
537 void *data)
538 {
539 if (cipher->prov != NULL)
540 return evp_names_do_all(cipher->prov, cipher->name_id, fn, data);
541
542 return 1;
543 }
544
EVP_ASYM_CIPHER_gettable_ctx_params(const EVP_ASYM_CIPHER * cip)545 const OSSL_PARAM *EVP_ASYM_CIPHER_gettable_ctx_params(const EVP_ASYM_CIPHER *cip)
546 {
547 void *provctx;
548
549 if (cip == NULL || cip->gettable_ctx_params == NULL)
550 return NULL;
551
552 provctx = ossl_provider_ctx(EVP_ASYM_CIPHER_get0_provider(cip));
553 return cip->gettable_ctx_params(NULL, provctx);
554 }
555
EVP_ASYM_CIPHER_settable_ctx_params(const EVP_ASYM_CIPHER * cip)556 const OSSL_PARAM *EVP_ASYM_CIPHER_settable_ctx_params(const EVP_ASYM_CIPHER *cip)
557 {
558 void *provctx;
559
560 if (cip == NULL || cip->settable_ctx_params == NULL)
561 return NULL;
562
563 provctx = ossl_provider_ctx(EVP_ASYM_CIPHER_get0_provider(cip));
564 return cip->settable_ctx_params(NULL, provctx);
565 }
566
