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 "crypto/evp.h"
17 #include "evp_local.h"
19 static void *keymgmt_new(void)
21 EVP_KEYMGMT *keymgmt = NULL;
23 if ((keymgmt = OPENSSL_zalloc(sizeof(*keymgmt))) == NULL
24 || (keymgmt->lock = CRYPTO_THREAD_lock_new()) == NULL) {
25 EVP_KEYMGMT_free(keymgmt);
26 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
35 static void *keymgmt_from_dispatch(int name_id,
36 const OSSL_DISPATCH *fns,
39 EVP_KEYMGMT *keymgmt = NULL;
40 int setparamfncnt = 0, getparamfncnt = 0;
41 int setgenparamfncnt = 0;
42 int importfncnt = 0, exportfncnt = 0;
44 if ((keymgmt = keymgmt_new()) == NULL) {
45 EVP_KEYMGMT_free(keymgmt);
48 keymgmt->name_id = name_id;
50 for (; fns->function_id != 0; fns++) {
51 switch (fns->function_id) {
52 case OSSL_FUNC_KEYMGMT_NEW:
53 if (keymgmt->new == NULL)
54 keymgmt->new = OSSL_FUNC_keymgmt_new(fns);
56 case OSSL_FUNC_KEYMGMT_GEN_INIT:
57 if (keymgmt->gen_init == NULL)
58 keymgmt->gen_init = OSSL_FUNC_keymgmt_gen_init(fns);
60 case OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE:
61 if (keymgmt->gen_set_template == NULL)
62 keymgmt->gen_set_template =
63 OSSL_FUNC_keymgmt_gen_set_template(fns);
65 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
66 if (keymgmt->gen_set_params == NULL) {
68 keymgmt->gen_set_params =
69 OSSL_FUNC_keymgmt_gen_set_params(fns);
72 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
73 if (keymgmt->gen_settable_params == NULL) {
75 keymgmt->gen_settable_params =
76 OSSL_FUNC_keymgmt_gen_settable_params(fns);
79 case OSSL_FUNC_KEYMGMT_GEN:
80 if (keymgmt->gen == NULL)
81 keymgmt->gen = OSSL_FUNC_keymgmt_gen(fns);
83 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
84 if (keymgmt->gen_cleanup == NULL)
85 keymgmt->gen_cleanup = OSSL_FUNC_keymgmt_gen_cleanup(fns);
87 case OSSL_FUNC_KEYMGMT_FREE:
88 if (keymgmt->free == NULL)
89 keymgmt->free = OSSL_FUNC_keymgmt_free(fns);
91 case OSSL_FUNC_KEYMGMT_LOAD:
92 if (keymgmt->load == NULL)
93 keymgmt->load = OSSL_FUNC_keymgmt_load(fns);
95 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
96 if (keymgmt->get_params == NULL) {
98 keymgmt->get_params = OSSL_FUNC_keymgmt_get_params(fns);
101 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
102 if (keymgmt->gettable_params == NULL) {
104 keymgmt->gettable_params =
105 OSSL_FUNC_keymgmt_gettable_params(fns);
108 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
109 if (keymgmt->set_params == NULL) {
111 keymgmt->set_params = OSSL_FUNC_keymgmt_set_params(fns);
114 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
115 if (keymgmt->settable_params == NULL) {
117 keymgmt->settable_params =
118 OSSL_FUNC_keymgmt_settable_params(fns);
121 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
122 if (keymgmt->query_operation_name == NULL)
123 keymgmt->query_operation_name =
124 OSSL_FUNC_keymgmt_query_operation_name(fns);
126 case OSSL_FUNC_KEYMGMT_HAS:
127 if (keymgmt->has == NULL)
128 keymgmt->has = OSSL_FUNC_keymgmt_has(fns);
130 case OSSL_FUNC_KEYMGMT_COPY:
131 if (keymgmt->copy == NULL)
132 keymgmt->copy = OSSL_FUNC_keymgmt_copy(fns);
134 case OSSL_FUNC_KEYMGMT_VALIDATE:
135 if (keymgmt->validate == NULL)
136 keymgmt->validate = OSSL_FUNC_keymgmt_validate(fns);
138 case OSSL_FUNC_KEYMGMT_MATCH:
139 if (keymgmt->match == NULL)
140 keymgmt->match = OSSL_FUNC_keymgmt_match(fns);
142 case OSSL_FUNC_KEYMGMT_IMPORT:
143 if (keymgmt->import == NULL) {
145 keymgmt->import = OSSL_FUNC_keymgmt_import(fns);
148 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
149 if (keymgmt->import_types == NULL) {
151 keymgmt->import_types = OSSL_FUNC_keymgmt_import_types(fns);
154 case OSSL_FUNC_KEYMGMT_EXPORT:
155 if (keymgmt->export == NULL) {
157 keymgmt->export = OSSL_FUNC_keymgmt_export(fns);
160 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
161 if (keymgmt->export_types == NULL) {
163 keymgmt->export_types = OSSL_FUNC_keymgmt_export_types(fns);
169 * Try to check that the method is sensible.
170 * At least one constructor and the destructor are MANDATORY
171 * The functions 'has' is MANDATORY
172 * It makes no sense being able to free stuff if you can't create it.
173 * It makes no sense providing OSSL_PARAM descriptors for import and
174 * export if you can't import or export.
176 if (keymgmt->free == NULL
177 || (keymgmt->new == NULL
178 && keymgmt->gen == NULL
179 && keymgmt->load == NULL)
180 || keymgmt->has == NULL
181 || (getparamfncnt != 0 && getparamfncnt != 2)
182 || (setparamfncnt != 0 && setparamfncnt != 2)
183 || (setgenparamfncnt != 0 && setgenparamfncnt != 2)
184 || (importfncnt != 0 && importfncnt != 2)
185 || (exportfncnt != 0 && exportfncnt != 2)
186 || (keymgmt->gen != NULL
187 && (keymgmt->gen_init == NULL
188 || keymgmt->gen_cleanup == NULL))) {
189 EVP_KEYMGMT_free(keymgmt);
190 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
193 keymgmt->prov = prov;
195 ossl_provider_up_ref(prov);
200 EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OSSL_LIB_CTX *ctx, int name_id,
201 const char *properties)
203 return evp_generic_fetch_by_number(ctx,
204 OSSL_OP_KEYMGMT, name_id, properties,
205 keymgmt_from_dispatch,
206 (int (*)(void *))EVP_KEYMGMT_up_ref,
207 (void (*)(void *))EVP_KEYMGMT_free);
210 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
211 const char *properties)
213 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
214 keymgmt_from_dispatch,
215 (int (*)(void *))EVP_KEYMGMT_up_ref,
216 (void (*)(void *))EVP_KEYMGMT_free);
219 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
223 CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
227 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
234 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
237 ossl_provider_free(keymgmt->prov);
238 CRYPTO_THREAD_lock_free(keymgmt->lock);
239 OPENSSL_free(keymgmt);
242 const OSSL_PROVIDER *EVP_KEYMGMT_provider(const EVP_KEYMGMT *keymgmt)
244 return keymgmt->prov;
247 int EVP_KEYMGMT_number(const EVP_KEYMGMT *keymgmt)
249 return keymgmt->name_id;
252 const char *EVP_KEYMGMT_get0_first_name(const EVP_KEYMGMT *keymgmt)
254 return evp_first_name(keymgmt->prov, keymgmt->name_id);
257 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
259 return evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
262 void EVP_KEYMGMT_do_all_provided(OSSL_LIB_CTX *libctx,
263 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
266 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
267 (void (*)(void *, void *))fn, arg,
268 keymgmt_from_dispatch,
269 (void (*)(void *))EVP_KEYMGMT_free);
272 int EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
273 void (*fn)(const char *name, void *data),
276 if (keymgmt->prov != NULL)
277 return evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
283 * Internal API that interfaces with the method function pointers
285 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
287 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
290 * TODO(3.0) 'new' is currently mandatory on its own, but when new
291 * constructors appear, it won't be quite as mandatory, so we have
292 * a check for future cases.
294 if (keymgmt->new == NULL)
296 return keymgmt->new(provctx);
299 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
301 /* This is mandatory, no need to check for its presence */
302 keymgmt->free(keydata);
305 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
306 const OSSL_PARAM params[])
308 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
310 if (keymgmt->gen_init == NULL)
312 return keymgmt->gen_init(provctx, selection, params);
315 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
319 * It's arguable if we actually should return success in this case, as
320 * it allows the caller to set a template key, which is then ignored.
321 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
322 * so we do this in the interest of backward compatibility.
323 * TODO(3.0) Investigate if we should change this behaviour.
325 if (keymgmt->gen_set_template == NULL)
327 return keymgmt->gen_set_template(genctx, template);
330 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
331 const OSSL_PARAM params[])
333 if (keymgmt->gen_set_params == NULL)
335 return keymgmt->gen_set_params(genctx, params);
338 const OSSL_PARAM *EVP_KEYMGMT_gen_settable_params(const EVP_KEYMGMT *keymgmt)
340 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
342 if (keymgmt->gen_settable_params == NULL)
344 return keymgmt->gen_settable_params(NULL, provctx);
347 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
348 OSSL_CALLBACK *cb, void *cbarg)
350 if (keymgmt->gen == NULL)
352 return keymgmt->gen(genctx, cb, cbarg);
355 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
357 if (keymgmt->gen != NULL)
358 keymgmt->gen_cleanup(genctx);
361 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
362 const void *objref, size_t objref_sz)
364 if (keymgmt->load != NULL)
365 return keymgmt->load(objref, objref_sz);
369 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
372 if (keymgmt->get_params == NULL)
374 return keymgmt->get_params(keydata, params);
377 const OSSL_PARAM *EVP_KEYMGMT_gettable_params(const EVP_KEYMGMT *keymgmt)
379 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
381 if (keymgmt->gettable_params == NULL)
383 return keymgmt->gettable_params(provctx);
386 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
387 const OSSL_PARAM params[])
389 if (keymgmt->set_params == NULL)
391 return keymgmt->set_params(keydata, params);
394 const OSSL_PARAM *EVP_KEYMGMT_settable_params(const EVP_KEYMGMT *keymgmt)
396 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
398 if (keymgmt->settable_params == NULL)
400 return keymgmt->settable_params(provctx);
403 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
405 /* This is mandatory, no need to check for its presence */
406 return keymgmt->has(keydata, selection);
409 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
410 int selection, int checktype)
412 /* We assume valid if the implementation doesn't have a function */
413 if (keymgmt->validate == NULL)
415 return keymgmt->validate(keydata, selection, checktype);
418 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
419 const void *keydata1, const void *keydata2,
422 /* We assume no match if the implementation doesn't have a function */
423 if (keymgmt->match == NULL)
425 return keymgmt->match(keydata1, keydata2, selection);
428 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
429 int selection, const OSSL_PARAM params[])
431 if (keymgmt->import == NULL)
433 return keymgmt->import(keydata, selection, params);
436 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
439 if (keymgmt->import_types == NULL)
441 return keymgmt->import_types(selection);
444 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
445 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
447 if (keymgmt->export == NULL)
449 return keymgmt->export(keydata, selection, param_cb, cbarg);
452 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
455 if (keymgmt->export_types == NULL)
457 return keymgmt->export_types(selection);
460 int evp_keymgmt_copy(const EVP_KEYMGMT *keymgmt,
461 void *keydata_to, const void *keydata_from,
464 /* We assume no copy if the implementation doesn't have a function */
465 if (keymgmt->copy == NULL)
467 return keymgmt->copy(keydata_to, keydata_from, selection);