2 * Copyright 2019-2020 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_numbers.h>
12 #include <openssl/evp.h>
13 #include <openssl/err.h>
14 #include "internal/provider.h"
15 #include "internal/refcount.h"
16 #include "crypto/evp.h"
17 #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 EVPerr(0, ERR_R_MALLOC_FAILURE);
36 static void *keymgmt_from_dispatch(int name_id,
37 const OSSL_DISPATCH *fns,
40 EVP_KEYMGMT *keymgmt = NULL;
41 int setparamfncnt = 0, getparamfncnt = 0;
42 int setgenparamfncnt = 0;
43 int importfncnt = 0, exportfncnt = 0;
45 if ((keymgmt = keymgmt_new()) == NULL) {
46 EVP_KEYMGMT_free(keymgmt);
49 keymgmt->name_id = name_id;
51 for (; fns->function_id != 0; fns++) {
52 switch (fns->function_id) {
53 case OSSL_FUNC_KEYMGMT_NEW:
54 if (keymgmt->new == NULL)
55 keymgmt->new = OSSL_get_OP_keymgmt_new(fns);
57 case OSSL_FUNC_KEYMGMT_GEN_INIT:
58 if (keymgmt->gen_init == NULL)
59 keymgmt->gen_init = OSSL_get_OP_keymgmt_gen_init(fns);
61 case OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE:
62 if (keymgmt->gen_set_template == NULL)
63 keymgmt->gen_set_template =
64 OSSL_get_OP_keymgmt_gen_set_template(fns);
66 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
67 if (keymgmt->gen_set_params == NULL) {
69 keymgmt->gen_set_params =
70 OSSL_get_OP_keymgmt_gen_set_params(fns);
73 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
74 if (keymgmt->gen_settable_params == NULL) {
76 keymgmt->gen_settable_params =
77 OSSL_get_OP_keymgmt_gen_settable_params(fns);
80 case OSSL_FUNC_KEYMGMT_GEN:
81 if (keymgmt->gen == NULL)
82 keymgmt->gen = OSSL_get_OP_keymgmt_gen(fns);
84 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
85 if (keymgmt->gen_cleanup == NULL)
86 keymgmt->gen_cleanup = OSSL_get_OP_keymgmt_gen_cleanup(fns);
88 case OSSL_FUNC_KEYMGMT_FREE:
89 if (keymgmt->free == NULL)
90 keymgmt->free = OSSL_get_OP_keymgmt_free(fns);
92 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
93 if (keymgmt->get_params == NULL) {
95 keymgmt->get_params = OSSL_get_OP_keymgmt_get_params(fns);
98 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
99 if (keymgmt->gettable_params == NULL) {
101 keymgmt->gettable_params =
102 OSSL_get_OP_keymgmt_gettable_params(fns);
105 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
106 if (keymgmt->set_params == NULL) {
108 keymgmt->set_params = OSSL_get_OP_keymgmt_set_params(fns);
111 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
112 if (keymgmt->settable_params == NULL) {
114 keymgmt->settable_params =
115 OSSL_get_OP_keymgmt_settable_params(fns);
118 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
119 if (keymgmt->query_operation_name == NULL)
120 keymgmt->query_operation_name =
121 OSSL_get_OP_keymgmt_query_operation_name(fns);
123 case OSSL_FUNC_KEYMGMT_HAS:
124 if (keymgmt->has == NULL)
125 keymgmt->has = OSSL_get_OP_keymgmt_has(fns);
127 case OSSL_FUNC_KEYMGMT_VALIDATE:
128 if (keymgmt->validate == NULL)
129 keymgmt->validate = OSSL_get_OP_keymgmt_validate(fns);
131 case OSSL_FUNC_KEYMGMT_MATCH:
132 if (keymgmt->match == NULL)
133 keymgmt->match = OSSL_get_OP_keymgmt_match(fns);
135 case OSSL_FUNC_KEYMGMT_IMPORT:
136 if (keymgmt->import == NULL) {
138 keymgmt->import = OSSL_get_OP_keymgmt_import(fns);
141 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
142 if (keymgmt->import_types == NULL) {
144 keymgmt->import_types = OSSL_get_OP_keymgmt_import_types(fns);
147 case OSSL_FUNC_KEYMGMT_EXPORT:
148 if (keymgmt->export == NULL) {
150 keymgmt->export = OSSL_get_OP_keymgmt_export(fns);
153 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
154 if (keymgmt->export_types == NULL) {
156 keymgmt->export_types = OSSL_get_OP_keymgmt_export_types(fns);
162 * Try to check that the method is sensible.
163 * At least one constructor and the destructor are MANDATORY
164 * The functions 'has' is MANDATORY
165 * It makes no sense being able to free stuff if you can't create it.
166 * It makes no sense providing OSSL_PARAM descriptors for import and
167 * export if you can't import or export.
169 if (keymgmt->free == NULL
170 || (keymgmt->new == NULL && keymgmt->gen == NULL)
171 || keymgmt->has == NULL
172 || (getparamfncnt != 0 && getparamfncnt != 2)
173 || (setparamfncnt != 0 && setparamfncnt != 2)
174 || (setgenparamfncnt != 0 && setgenparamfncnt != 2)
175 || (importfncnt != 0 && importfncnt != 2)
176 || (exportfncnt != 0 && exportfncnt != 2)
177 || (keymgmt->gen != NULL
178 && (keymgmt->gen_init == NULL
179 || keymgmt->gen_cleanup == NULL))) {
180 EVP_KEYMGMT_free(keymgmt);
181 EVPerr(0, EVP_R_INVALID_PROVIDER_FUNCTIONS);
184 keymgmt->prov = prov;
186 ossl_provider_up_ref(prov);
191 EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OPENSSL_CTX *ctx, int name_id,
192 const char *properties)
194 return evp_generic_fetch_by_number(ctx,
195 OSSL_OP_KEYMGMT, name_id, properties,
196 keymgmt_from_dispatch,
197 (int (*)(void *))EVP_KEYMGMT_up_ref,
198 (void (*)(void *))EVP_KEYMGMT_free);
201 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OPENSSL_CTX *ctx, const char *algorithm,
202 const char *properties)
204 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
205 keymgmt_from_dispatch,
206 (int (*)(void *))EVP_KEYMGMT_up_ref,
207 (void (*)(void *))EVP_KEYMGMT_free);
210 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
214 CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
218 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
225 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
228 ossl_provider_free(keymgmt->prov);
229 CRYPTO_THREAD_lock_free(keymgmt->lock);
230 OPENSSL_free(keymgmt);
233 const OSSL_PROVIDER *EVP_KEYMGMT_provider(const EVP_KEYMGMT *keymgmt)
235 return keymgmt->prov;
238 int EVP_KEYMGMT_number(const EVP_KEYMGMT *keymgmt)
240 return keymgmt->name_id;
243 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
245 return evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
248 void EVP_KEYMGMT_do_all_provided(OPENSSL_CTX *libctx,
249 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
252 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
253 (void (*)(void *, void *))fn, arg,
254 keymgmt_from_dispatch,
255 (void (*)(void *))EVP_KEYMGMT_free);
258 void EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
259 void (*fn)(const char *name, void *data),
262 if (keymgmt->prov != NULL)
263 evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
267 * Internal API that interfaces with the method function pointers
269 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
271 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
274 * TODO(3.0) 'new' is currently mandatory on its own, but when new
275 * constructors appear, it won't be quite as mandatory, so we have
276 * a check for future cases.
278 if (keymgmt->new == NULL)
280 return keymgmt->new(provctx);
283 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
285 /* This is mandatory, no need to check for its presence */
286 keymgmt->free(keydata);
289 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection)
291 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
293 if (keymgmt->gen_init == NULL)
295 return keymgmt->gen_init(provctx, selection);
298 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
302 * It's arguable if we actually should return success in this case, as
303 * it allows the caller to set a template key, which is then ignored.
304 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
305 * so we do this in the interest of backward compatibility.
306 * TODO(3.0) Investigate if we should change this behaviour.
308 if (keymgmt->gen_set_template == NULL)
310 return keymgmt->gen_set_template(genctx, template);
313 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
314 const OSSL_PARAM params[])
316 if (keymgmt->gen_set_params == NULL)
318 return keymgmt->gen_set_params(genctx, params);
321 const OSSL_PARAM *evp_keymgmt_gen_settable_params(const EVP_KEYMGMT *keymgmt)
323 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
325 if (keymgmt->gen_settable_params == NULL)
327 return keymgmt->gen_settable_params(provctx);
330 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
331 OSSL_CALLBACK *cb, void *cbarg)
333 if (keymgmt->gen == NULL)
335 return keymgmt->gen(genctx, cb, cbarg);
338 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
340 if (keymgmt->gen != NULL)
341 keymgmt->gen_cleanup(genctx);
344 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
347 if (keymgmt->get_params == NULL)
349 return keymgmt->get_params(keydata, params);
352 const OSSL_PARAM *evp_keymgmt_gettable_params(const EVP_KEYMGMT *keymgmt)
354 if (keymgmt->gettable_params == NULL)
356 return keymgmt->gettable_params();
359 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
360 const OSSL_PARAM params[])
362 if (keymgmt->set_params == NULL)
364 return keymgmt->set_params(keydata, params);
367 const OSSL_PARAM *evp_keymgmt_settable_params(const EVP_KEYMGMT *keymgmt)
369 if (keymgmt->settable_params == NULL)
371 return keymgmt->settable_params();
374 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
376 /* This is mandatory, no need to check for its presence */
377 return keymgmt->has(keydata, selection);
380 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
383 /* We assume valid if the implementation doesn't have a function */
384 if (keymgmt->validate == NULL)
386 return keymgmt->validate(keydata, selection);
389 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
390 const void *keydata1, const void *keydata2,
393 /* We assume no match if the implementation doesn't have a function */
394 if (keymgmt->match == NULL)
396 return keymgmt->match(keydata1, keydata2, selection);
399 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
400 int selection, const OSSL_PARAM params[])
402 if (keymgmt->import == NULL)
404 return keymgmt->import(keydata, selection, params);
407 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
410 if (keymgmt->import_types == NULL)
412 return keymgmt->import_types(selection);
415 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
416 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
418 if (keymgmt->export == NULL)
420 return keymgmt->export(keydata, selection, param_cb, cbarg);
423 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
426 if (keymgmt->export_types == NULL)
428 return keymgmt->export_types(selection);
431 int evp_keymgmt_copy(const EVP_KEYMGMT *keymgmt,
432 void *keydata_to, const void *keydata_from,
435 /* We assume no copy if the implementation doesn't have a function */
436 if (keymgmt->copy == NULL)
438 return keymgmt->copy(keydata_to, keydata_from, selection);