2 * Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/crypto.h>
11 #include <openssl/core_dispatch.h>
12 #include <openssl/evp.h>
13 #include <openssl/err.h>
14 #include "internal/provider.h"
15 #include "internal/refcount.h"
16 #include "internal/core.h"
17 #include "crypto/evp.h"
18 #include "evp_local.h"
20 static void *keymgmt_new(void)
22 EVP_KEYMGMT *keymgmt = NULL;
24 if ((keymgmt = OPENSSL_zalloc(sizeof(*keymgmt))) == NULL)
26 if (!CRYPTO_NEW_REF(&keymgmt->refcnt, 1)) {
27 EVP_KEYMGMT_free(keymgmt);
34 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
39 if (*type == NID_undef)
40 *type = evp_pkey_name2type(keytype);
43 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
47 EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
53 static void *keymgmt_from_algorithm(int name_id,
54 const OSSL_ALGORITHM *algodef,
57 const OSSL_DISPATCH *fns = algodef->implementation;
58 EVP_KEYMGMT *keymgmt = NULL;
59 int setparamfncnt = 0, getparamfncnt = 0;
60 int setgenparamfncnt = 0;
61 int importfncnt = 0, exportfncnt = 0;
62 int importtypesfncnt = 0, exporttypesfncnt = 0;
64 if ((keymgmt = keymgmt_new()) == NULL)
67 keymgmt->name_id = name_id;
68 if ((keymgmt->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
69 EVP_KEYMGMT_free(keymgmt);
72 keymgmt->description = algodef->algorithm_description;
74 for (; fns->function_id != 0; fns++) {
75 switch (fns->function_id) {
76 case OSSL_FUNC_KEYMGMT_NEW:
77 if (keymgmt->new == NULL)
78 keymgmt->new = OSSL_FUNC_keymgmt_new(fns);
80 case OSSL_FUNC_KEYMGMT_GEN_INIT:
81 if (keymgmt->gen_init == NULL)
82 keymgmt->gen_init = OSSL_FUNC_keymgmt_gen_init(fns);
84 case OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE:
85 if (keymgmt->gen_set_template == NULL)
86 keymgmt->gen_set_template =
87 OSSL_FUNC_keymgmt_gen_set_template(fns);
89 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
90 if (keymgmt->gen_set_params == NULL) {
92 keymgmt->gen_set_params =
93 OSSL_FUNC_keymgmt_gen_set_params(fns);
96 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
97 if (keymgmt->gen_settable_params == NULL) {
99 keymgmt->gen_settable_params =
100 OSSL_FUNC_keymgmt_gen_settable_params(fns);
103 case OSSL_FUNC_KEYMGMT_GEN:
104 if (keymgmt->gen == NULL)
105 keymgmt->gen = OSSL_FUNC_keymgmt_gen(fns);
107 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
108 if (keymgmt->gen_cleanup == NULL)
109 keymgmt->gen_cleanup = OSSL_FUNC_keymgmt_gen_cleanup(fns);
111 case OSSL_FUNC_KEYMGMT_FREE:
112 if (keymgmt->free == NULL)
113 keymgmt->free = OSSL_FUNC_keymgmt_free(fns);
115 case OSSL_FUNC_KEYMGMT_LOAD:
116 if (keymgmt->load == NULL)
117 keymgmt->load = OSSL_FUNC_keymgmt_load(fns);
119 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
120 if (keymgmt->get_params == NULL) {
122 keymgmt->get_params = OSSL_FUNC_keymgmt_get_params(fns);
125 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
126 if (keymgmt->gettable_params == NULL) {
128 keymgmt->gettable_params =
129 OSSL_FUNC_keymgmt_gettable_params(fns);
132 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
133 if (keymgmt->set_params == NULL) {
135 keymgmt->set_params = OSSL_FUNC_keymgmt_set_params(fns);
138 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
139 if (keymgmt->settable_params == NULL) {
141 keymgmt->settable_params =
142 OSSL_FUNC_keymgmt_settable_params(fns);
145 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
146 if (keymgmt->query_operation_name == NULL)
147 keymgmt->query_operation_name =
148 OSSL_FUNC_keymgmt_query_operation_name(fns);
150 case OSSL_FUNC_KEYMGMT_HAS:
151 if (keymgmt->has == NULL)
152 keymgmt->has = OSSL_FUNC_keymgmt_has(fns);
154 case OSSL_FUNC_KEYMGMT_DUP:
155 if (keymgmt->dup == NULL)
156 keymgmt->dup = OSSL_FUNC_keymgmt_dup(fns);
158 case OSSL_FUNC_KEYMGMT_VALIDATE:
159 if (keymgmt->validate == NULL)
160 keymgmt->validate = OSSL_FUNC_keymgmt_validate(fns);
162 case OSSL_FUNC_KEYMGMT_MATCH:
163 if (keymgmt->match == NULL)
164 keymgmt->match = OSSL_FUNC_keymgmt_match(fns);
166 case OSSL_FUNC_KEYMGMT_IMPORT:
167 if (keymgmt->import == NULL) {
169 keymgmt->import = OSSL_FUNC_keymgmt_import(fns);
172 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
173 if (keymgmt->import_types == NULL) {
174 if (importtypesfncnt == 0)
177 keymgmt->import_types = OSSL_FUNC_keymgmt_import_types(fns);
180 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES_EX:
181 if (keymgmt->import_types_ex == NULL) {
182 if (importtypesfncnt == 0)
185 keymgmt->import_types_ex = OSSL_FUNC_keymgmt_import_types_ex(fns);
188 case OSSL_FUNC_KEYMGMT_EXPORT:
189 if (keymgmt->export == NULL) {
191 keymgmt->export = OSSL_FUNC_keymgmt_export(fns);
194 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
195 if (keymgmt->export_types == NULL) {
196 if (exporttypesfncnt == 0)
199 keymgmt->export_types = OSSL_FUNC_keymgmt_export_types(fns);
202 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES_EX:
203 if (keymgmt->export_types_ex == NULL) {
204 if (exporttypesfncnt == 0)
207 keymgmt->export_types_ex = OSSL_FUNC_keymgmt_export_types_ex(fns);
213 * Try to check that the method is sensible.
214 * At least one constructor and the destructor are MANDATORY
215 * The functions 'has' is MANDATORY
216 * It makes no sense being able to free stuff if you can't create it.
217 * It makes no sense providing OSSL_PARAM descriptors for import and
218 * export if you can't import or export.
220 if (keymgmt->free == NULL
221 || (keymgmt->new == NULL
222 && keymgmt->gen == NULL
223 && keymgmt->load == NULL)
224 || keymgmt->has == NULL
225 || (getparamfncnt != 0 && getparamfncnt != 2)
226 || (setparamfncnt != 0 && setparamfncnt != 2)
227 || (setgenparamfncnt != 0 && setgenparamfncnt != 2)
228 || (importfncnt != 0 && importfncnt != 2)
229 || (exportfncnt != 0 && exportfncnt != 2)
230 || (keymgmt->gen != NULL
231 && (keymgmt->gen_init == NULL
232 || keymgmt->gen_cleanup == NULL))) {
233 EVP_KEYMGMT_free(keymgmt);
234 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
237 keymgmt->prov = prov;
239 ossl_provider_up_ref(prov);
242 keymgmt->legacy_alg = get_legacy_alg_type_from_keymgmt(keymgmt);
248 EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
250 const char *properties)
252 return evp_generic_fetch_from_prov(prov, OSSL_OP_KEYMGMT,
254 keymgmt_from_algorithm,
255 (int (*)(void *))EVP_KEYMGMT_up_ref,
256 (void (*)(void *))EVP_KEYMGMT_free);
259 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
260 const char *properties)
262 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
263 keymgmt_from_algorithm,
264 (int (*)(void *))EVP_KEYMGMT_up_ref,
265 (void (*)(void *))EVP_KEYMGMT_free);
268 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
272 CRYPTO_UP_REF(&keymgmt->refcnt, &ref);
276 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
283 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref);
286 OPENSSL_free(keymgmt->type_name);
287 ossl_provider_free(keymgmt->prov);
288 CRYPTO_FREE_REF(&keymgmt->refcnt);
289 OPENSSL_free(keymgmt);
292 const OSSL_PROVIDER *EVP_KEYMGMT_get0_provider(const EVP_KEYMGMT *keymgmt)
294 return keymgmt->prov;
297 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt)
299 return keymgmt->name_id;
302 int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt)
304 return keymgmt->legacy_alg;
307 const char *EVP_KEYMGMT_get0_description(const EVP_KEYMGMT *keymgmt)
309 return keymgmt->description;
312 const char *EVP_KEYMGMT_get0_name(const EVP_KEYMGMT *keymgmt)
314 return keymgmt->type_name;
317 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
319 return keymgmt != NULL
320 && evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
323 void EVP_KEYMGMT_do_all_provided(OSSL_LIB_CTX *libctx,
324 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
327 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
328 (void (*)(void *, void *))fn, arg,
329 keymgmt_from_algorithm,
330 (int (*)(void *))EVP_KEYMGMT_up_ref,
331 (void (*)(void *))EVP_KEYMGMT_free);
334 int EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
335 void (*fn)(const char *name, void *data),
338 if (keymgmt->prov != NULL)
339 return evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
345 * Internal API that interfaces with the method function pointers
347 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
349 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
352 * 'new' is currently mandatory on its own, but when new
353 * constructors appear, it won't be quite as mandatory,
354 * so we have a check for future cases.
356 if (keymgmt->new == NULL)
358 return keymgmt->new(provctx);
361 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
363 /* This is mandatory, no need to check for its presence */
364 keymgmt->free(keydata);
367 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
368 const OSSL_PARAM params[])
370 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
372 if (keymgmt->gen_init == NULL)
374 return keymgmt->gen_init(provctx, selection, params);
377 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
381 * It's arguable if we actually should return success in this case, as
382 * it allows the caller to set a template key, which is then ignored.
383 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
384 * so we do this in the interest of backward compatibility.
386 if (keymgmt->gen_set_template == NULL)
388 return keymgmt->gen_set_template(genctx, templ);
391 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
392 const OSSL_PARAM params[])
394 if (keymgmt->gen_set_params == NULL)
396 return keymgmt->gen_set_params(genctx, params);
399 const OSSL_PARAM *EVP_KEYMGMT_gen_settable_params(const EVP_KEYMGMT *keymgmt)
401 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
403 if (keymgmt->gen_settable_params == NULL)
405 return keymgmt->gen_settable_params(NULL, provctx);
408 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
409 OSSL_CALLBACK *cb, void *cbarg)
411 if (keymgmt->gen == NULL)
413 return keymgmt->gen(genctx, cb, cbarg);
416 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
418 if (keymgmt->gen_cleanup != NULL)
419 keymgmt->gen_cleanup(genctx);
422 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt)
424 return keymgmt != NULL && keymgmt->load != NULL;
427 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
428 const void *objref, size_t objref_sz)
430 if (evp_keymgmt_has_load(keymgmt))
431 return keymgmt->load(objref, objref_sz);
435 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
438 if (keymgmt->get_params == NULL)
440 return keymgmt->get_params(keydata, params);
443 const OSSL_PARAM *EVP_KEYMGMT_gettable_params(const EVP_KEYMGMT *keymgmt)
445 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
447 if (keymgmt->gettable_params == NULL)
449 return keymgmt->gettable_params(provctx);
452 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
453 const OSSL_PARAM params[])
455 if (keymgmt->set_params == NULL)
457 return keymgmt->set_params(keydata, params);
460 const OSSL_PARAM *EVP_KEYMGMT_settable_params(const EVP_KEYMGMT *keymgmt)
462 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
464 if (keymgmt->settable_params == NULL)
466 return keymgmt->settable_params(provctx);
469 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
471 /* This is mandatory, no need to check for its presence */
472 return keymgmt->has(keydata, selection);
475 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
476 int selection, int checktype)
478 /* We assume valid if the implementation doesn't have a function */
479 if (keymgmt->validate == NULL)
481 return keymgmt->validate(keydata, selection, checktype);
484 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
485 const void *keydata1, const void *keydata2,
488 /* We assume no match if the implementation doesn't have a function */
489 if (keymgmt->match == NULL)
491 return keymgmt->match(keydata1, keydata2, selection);
494 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
495 int selection, const OSSL_PARAM params[])
497 if (keymgmt->import == NULL)
499 return keymgmt->import(keydata, selection, params);
502 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
505 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
507 if (keymgmt->import_types_ex != NULL)
508 return keymgmt->import_types_ex(provctx, selection);
509 if (keymgmt->import_types == NULL)
511 return keymgmt->import_types(selection);
514 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
515 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
517 if (keymgmt->export == NULL)
519 return keymgmt->export(keydata, selection, param_cb, cbarg);
522 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
525 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
527 if (keymgmt->export_types_ex != NULL)
528 return keymgmt->export_types_ex(provctx, selection);
529 if (keymgmt->export_types == NULL)
531 return keymgmt->export_types(selection);
534 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt, const void *keydata_from,
537 /* We assume no dup if the implementation doesn't have a function */
538 if (keymgmt->dup == NULL)
540 return keymgmt->dup(keydata_from, selection);