2 * Copyright 2019-2021 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
25 || (keymgmt->lock = CRYPTO_THREAD_lock_new()) == NULL) {
26 EVP_KEYMGMT_free(keymgmt);
27 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
36 static void *keymgmt_from_algorithm(int name_id,
37 const OSSL_ALGORITHM *algodef,
40 const OSSL_DISPATCH *fns = algodef->implementation;
41 EVP_KEYMGMT *keymgmt = NULL;
42 int setparamfncnt = 0, getparamfncnt = 0;
43 int setgenparamfncnt = 0;
44 int importfncnt = 0, exportfncnt = 0;
46 if ((keymgmt = keymgmt_new()) == NULL)
49 keymgmt->name_id = name_id;
50 if ((keymgmt->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
51 EVP_KEYMGMT_free(keymgmt);
54 keymgmt->description = algodef->algorithm_description;
56 for (; fns->function_id != 0; fns++) {
57 switch (fns->function_id) {
58 case OSSL_FUNC_KEYMGMT_NEW:
59 if (keymgmt->new == NULL)
60 keymgmt->new = OSSL_FUNC_keymgmt_new(fns);
62 case OSSL_FUNC_KEYMGMT_GEN_INIT:
63 if (keymgmt->gen_init == NULL)
64 keymgmt->gen_init = OSSL_FUNC_keymgmt_gen_init(fns);
66 case OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE:
67 if (keymgmt->gen_set_template == NULL)
68 keymgmt->gen_set_template =
69 OSSL_FUNC_keymgmt_gen_set_template(fns);
71 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
72 if (keymgmt->gen_set_params == NULL) {
74 keymgmt->gen_set_params =
75 OSSL_FUNC_keymgmt_gen_set_params(fns);
78 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
79 if (keymgmt->gen_settable_params == NULL) {
81 keymgmt->gen_settable_params =
82 OSSL_FUNC_keymgmt_gen_settable_params(fns);
85 case OSSL_FUNC_KEYMGMT_GEN:
86 if (keymgmt->gen == NULL)
87 keymgmt->gen = OSSL_FUNC_keymgmt_gen(fns);
89 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
90 if (keymgmt->gen_cleanup == NULL)
91 keymgmt->gen_cleanup = OSSL_FUNC_keymgmt_gen_cleanup(fns);
93 case OSSL_FUNC_KEYMGMT_FREE:
94 if (keymgmt->free == NULL)
95 keymgmt->free = OSSL_FUNC_keymgmt_free(fns);
97 case OSSL_FUNC_KEYMGMT_LOAD:
98 if (keymgmt->load == NULL)
99 keymgmt->load = OSSL_FUNC_keymgmt_load(fns);
101 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
102 if (keymgmt->get_params == NULL) {
104 keymgmt->get_params = OSSL_FUNC_keymgmt_get_params(fns);
107 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
108 if (keymgmt->gettable_params == NULL) {
110 keymgmt->gettable_params =
111 OSSL_FUNC_keymgmt_gettable_params(fns);
114 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
115 if (keymgmt->set_params == NULL) {
117 keymgmt->set_params = OSSL_FUNC_keymgmt_set_params(fns);
120 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
121 if (keymgmt->settable_params == NULL) {
123 keymgmt->settable_params =
124 OSSL_FUNC_keymgmt_settable_params(fns);
127 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
128 if (keymgmt->query_operation_name == NULL)
129 keymgmt->query_operation_name =
130 OSSL_FUNC_keymgmt_query_operation_name(fns);
132 case OSSL_FUNC_KEYMGMT_HAS:
133 if (keymgmt->has == NULL)
134 keymgmt->has = OSSL_FUNC_keymgmt_has(fns);
136 case OSSL_FUNC_KEYMGMT_DUP:
137 if (keymgmt->dup == NULL)
138 keymgmt->dup = OSSL_FUNC_keymgmt_dup(fns);
140 case OSSL_FUNC_KEYMGMT_VALIDATE:
141 if (keymgmt->validate == NULL)
142 keymgmt->validate = OSSL_FUNC_keymgmt_validate(fns);
144 case OSSL_FUNC_KEYMGMT_MATCH:
145 if (keymgmt->match == NULL)
146 keymgmt->match = OSSL_FUNC_keymgmt_match(fns);
148 case OSSL_FUNC_KEYMGMT_IMPORT:
149 if (keymgmt->import == NULL) {
151 keymgmt->import = OSSL_FUNC_keymgmt_import(fns);
154 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
155 if (keymgmt->import_types == NULL) {
157 keymgmt->import_types = OSSL_FUNC_keymgmt_import_types(fns);
160 case OSSL_FUNC_KEYMGMT_EXPORT:
161 if (keymgmt->export == NULL) {
163 keymgmt->export = OSSL_FUNC_keymgmt_export(fns);
166 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
167 if (keymgmt->export_types == NULL) {
169 keymgmt->export_types = OSSL_FUNC_keymgmt_export_types(fns);
175 * Try to check that the method is sensible.
176 * At least one constructor and the destructor are MANDATORY
177 * The functions 'has' is MANDATORY
178 * It makes no sense being able to free stuff if you can't create it.
179 * It makes no sense providing OSSL_PARAM descriptors for import and
180 * export if you can't import or export.
182 if (keymgmt->free == NULL
183 || (keymgmt->new == NULL
184 && keymgmt->gen == NULL
185 && keymgmt->load == NULL)
186 || keymgmt->has == NULL
187 || (getparamfncnt != 0 && getparamfncnt != 2)
188 || (setparamfncnt != 0 && setparamfncnt != 2)
189 || (setgenparamfncnt != 0 && setgenparamfncnt != 2)
190 || (importfncnt != 0 && importfncnt != 2)
191 || (exportfncnt != 0 && exportfncnt != 2)
192 || (keymgmt->gen != NULL
193 && (keymgmt->gen_init == NULL
194 || keymgmt->gen_cleanup == NULL))) {
195 EVP_KEYMGMT_free(keymgmt);
196 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
199 keymgmt->prov = prov;
201 ossl_provider_up_ref(prov);
206 EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OSSL_LIB_CTX *ctx, int name_id,
207 const char *properties)
209 return evp_generic_fetch_by_number(ctx,
210 OSSL_OP_KEYMGMT, name_id, properties,
211 keymgmt_from_algorithm,
212 (int (*)(void *))EVP_KEYMGMT_up_ref,
213 (void (*)(void *))EVP_KEYMGMT_free);
216 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
217 const char *properties)
219 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
220 keymgmt_from_algorithm,
221 (int (*)(void *))EVP_KEYMGMT_up_ref,
222 (void (*)(void *))EVP_KEYMGMT_free);
225 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
229 CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
233 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
240 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
243 OPENSSL_free(keymgmt->type_name);
244 ossl_provider_free(keymgmt->prov);
245 CRYPTO_THREAD_lock_free(keymgmt->lock);
246 OPENSSL_free(keymgmt);
249 const OSSL_PROVIDER *EVP_KEYMGMT_get0_provider(const EVP_KEYMGMT *keymgmt)
251 return keymgmt->prov;
254 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt)
256 return keymgmt->name_id;
259 const char *EVP_KEYMGMT_get0_description(const EVP_KEYMGMT *keymgmt)
261 return keymgmt->description;
264 const char *EVP_KEYMGMT_get0_name(const EVP_KEYMGMT *keymgmt)
266 return keymgmt->type_name;
269 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
271 return evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
274 void EVP_KEYMGMT_do_all_provided(OSSL_LIB_CTX *libctx,
275 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
278 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
279 (void (*)(void *, void *))fn, arg,
280 keymgmt_from_algorithm,
281 (int (*)(void *))EVP_KEYMGMT_up_ref,
282 (void (*)(void *))EVP_KEYMGMT_free);
285 int EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
286 void (*fn)(const char *name, void *data),
289 if (keymgmt->prov != NULL)
290 return evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
296 * Internal API that interfaces with the method function pointers
298 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
300 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
303 * 'new' is currently mandatory on its own, but when new
304 * constructors appear, it won't be quite as mandatory,
305 * so we have a check for future cases.
307 if (keymgmt->new == NULL)
309 return keymgmt->new(provctx);
312 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
314 /* This is mandatory, no need to check for its presence */
315 keymgmt->free(keydata);
318 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
319 const OSSL_PARAM params[])
321 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
323 if (keymgmt->gen_init == NULL)
325 return keymgmt->gen_init(provctx, selection, params);
328 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
332 * It's arguable if we actually should return success in this case, as
333 * it allows the caller to set a template key, which is then ignored.
334 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
335 * so we do this in the interest of backward compatibility.
337 if (keymgmt->gen_set_template == NULL)
339 return keymgmt->gen_set_template(genctx, template);
342 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
343 const OSSL_PARAM params[])
345 if (keymgmt->gen_set_params == NULL)
347 return keymgmt->gen_set_params(genctx, params);
350 const OSSL_PARAM *EVP_KEYMGMT_gen_settable_params(const EVP_KEYMGMT *keymgmt)
352 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
354 if (keymgmt->gen_settable_params == NULL)
356 return keymgmt->gen_settable_params(NULL, provctx);
359 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
360 OSSL_CALLBACK *cb, void *cbarg)
362 if (keymgmt->gen == NULL)
364 return keymgmt->gen(genctx, cb, cbarg);
367 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
369 if (keymgmt->gen != NULL)
370 keymgmt->gen_cleanup(genctx);
373 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
374 const void *objref, size_t objref_sz)
376 if (keymgmt->load != NULL)
377 return keymgmt->load(objref, objref_sz);
381 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
384 if (keymgmt->get_params == NULL)
386 return keymgmt->get_params(keydata, params);
389 const OSSL_PARAM *EVP_KEYMGMT_gettable_params(const EVP_KEYMGMT *keymgmt)
391 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
393 if (keymgmt->gettable_params == NULL)
395 return keymgmt->gettable_params(provctx);
398 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
399 const OSSL_PARAM params[])
401 if (keymgmt->set_params == NULL)
403 return keymgmt->set_params(keydata, params);
406 const OSSL_PARAM *EVP_KEYMGMT_settable_params(const EVP_KEYMGMT *keymgmt)
408 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
410 if (keymgmt->settable_params == NULL)
412 return keymgmt->settable_params(provctx);
415 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
417 /* This is mandatory, no need to check for its presence */
418 return keymgmt->has(keydata, selection);
421 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
422 int selection, int checktype)
424 /* We assume valid if the implementation doesn't have a function */
425 if (keymgmt->validate == NULL)
427 return keymgmt->validate(keydata, selection, checktype);
430 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
431 const void *keydata1, const void *keydata2,
434 /* We assume no match if the implementation doesn't have a function */
435 if (keymgmt->match == NULL)
437 return keymgmt->match(keydata1, keydata2, selection);
440 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
441 int selection, const OSSL_PARAM params[])
443 if (keymgmt->import == NULL)
445 return keymgmt->import(keydata, selection, params);
448 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
451 if (keymgmt->import_types == NULL)
453 return keymgmt->import_types(selection);
456 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
457 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
459 if (keymgmt->export == NULL)
461 return keymgmt->export(keydata, selection, param_cb, cbarg);
464 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
467 if (keymgmt->export_types == NULL)
469 return keymgmt->export_types(selection);
472 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt, const void *keydata_from,
475 /* We assume no dup if the implementation doesn't have a function */
476 if (keymgmt->dup == NULL)
478 return keymgmt->dup(keydata_from, selection);