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)
26 if (!CRYPTO_NEW_REF(&keymgmt->refcnt, 1)) {
27 EVP_KEYMGMT_free(keymgmt);
33 static void *keymgmt_from_algorithm(int name_id,
34 const OSSL_ALGORITHM *algodef,
37 const OSSL_DISPATCH *fns = algodef->implementation;
38 EVP_KEYMGMT *keymgmt = NULL;
39 int setparamfncnt = 0, getparamfncnt = 0;
40 int setgenparamfncnt = 0;
41 int importfncnt = 0, exportfncnt = 0;
42 int importtypesfncnt = 0, exporttypesfncnt = 0;
44 if ((keymgmt = keymgmt_new()) == NULL)
47 keymgmt->name_id = name_id;
48 if ((keymgmt->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
49 EVP_KEYMGMT_free(keymgmt);
52 keymgmt->description = algodef->algorithm_description;
54 for (; fns->function_id != 0; fns++) {
55 switch (fns->function_id) {
56 case OSSL_FUNC_KEYMGMT_NEW:
57 if (keymgmt->new == NULL)
58 keymgmt->new = OSSL_FUNC_keymgmt_new(fns);
60 case OSSL_FUNC_KEYMGMT_GEN_INIT:
61 if (keymgmt->gen_init == NULL)
62 keymgmt->gen_init = OSSL_FUNC_keymgmt_gen_init(fns);
64 case OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE:
65 if (keymgmt->gen_set_template == NULL)
66 keymgmt->gen_set_template =
67 OSSL_FUNC_keymgmt_gen_set_template(fns);
69 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
70 if (keymgmt->gen_set_params == NULL) {
72 keymgmt->gen_set_params =
73 OSSL_FUNC_keymgmt_gen_set_params(fns);
76 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
77 if (keymgmt->gen_settable_params == NULL) {
79 keymgmt->gen_settable_params =
80 OSSL_FUNC_keymgmt_gen_settable_params(fns);
83 case OSSL_FUNC_KEYMGMT_GEN:
84 if (keymgmt->gen == NULL)
85 keymgmt->gen = OSSL_FUNC_keymgmt_gen(fns);
87 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
88 if (keymgmt->gen_cleanup == NULL)
89 keymgmt->gen_cleanup = OSSL_FUNC_keymgmt_gen_cleanup(fns);
91 case OSSL_FUNC_KEYMGMT_FREE:
92 if (keymgmt->free == NULL)
93 keymgmt->free = OSSL_FUNC_keymgmt_free(fns);
95 case OSSL_FUNC_KEYMGMT_LOAD:
96 if (keymgmt->load == NULL)
97 keymgmt->load = OSSL_FUNC_keymgmt_load(fns);
99 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
100 if (keymgmt->get_params == NULL) {
102 keymgmt->get_params = OSSL_FUNC_keymgmt_get_params(fns);
105 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
106 if (keymgmt->gettable_params == NULL) {
108 keymgmt->gettable_params =
109 OSSL_FUNC_keymgmt_gettable_params(fns);
112 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
113 if (keymgmt->set_params == NULL) {
115 keymgmt->set_params = OSSL_FUNC_keymgmt_set_params(fns);
118 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
119 if (keymgmt->settable_params == NULL) {
121 keymgmt->settable_params =
122 OSSL_FUNC_keymgmt_settable_params(fns);
125 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
126 if (keymgmt->query_operation_name == NULL)
127 keymgmt->query_operation_name =
128 OSSL_FUNC_keymgmt_query_operation_name(fns);
130 case OSSL_FUNC_KEYMGMT_HAS:
131 if (keymgmt->has == NULL)
132 keymgmt->has = OSSL_FUNC_keymgmt_has(fns);
134 case OSSL_FUNC_KEYMGMT_DUP:
135 if (keymgmt->dup == NULL)
136 keymgmt->dup = OSSL_FUNC_keymgmt_dup(fns);
138 case OSSL_FUNC_KEYMGMT_VALIDATE:
139 if (keymgmt->validate == NULL)
140 keymgmt->validate = OSSL_FUNC_keymgmt_validate(fns);
142 case OSSL_FUNC_KEYMGMT_MATCH:
143 if (keymgmt->match == NULL)
144 keymgmt->match = OSSL_FUNC_keymgmt_match(fns);
146 case OSSL_FUNC_KEYMGMT_IMPORT:
147 if (keymgmt->import == NULL) {
149 keymgmt->import = OSSL_FUNC_keymgmt_import(fns);
152 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
153 if (keymgmt->import_types == NULL) {
154 if (importtypesfncnt == 0)
157 keymgmt->import_types = OSSL_FUNC_keymgmt_import_types(fns);
160 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES_EX:
161 if (keymgmt->import_types_ex == NULL) {
162 if (importtypesfncnt == 0)
165 keymgmt->import_types_ex = OSSL_FUNC_keymgmt_import_types_ex(fns);
168 case OSSL_FUNC_KEYMGMT_EXPORT:
169 if (keymgmt->export == NULL) {
171 keymgmt->export = OSSL_FUNC_keymgmt_export(fns);
174 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
175 if (keymgmt->export_types == NULL) {
176 if (exporttypesfncnt == 0)
179 keymgmt->export_types = OSSL_FUNC_keymgmt_export_types(fns);
182 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES_EX:
183 if (keymgmt->export_types_ex == NULL) {
184 if (exporttypesfncnt == 0)
187 keymgmt->export_types_ex = OSSL_FUNC_keymgmt_export_types_ex(fns);
193 * Try to check that the method is sensible.
194 * At least one constructor and the destructor are MANDATORY
195 * The functions 'has' is MANDATORY
196 * It makes no sense being able to free stuff if you can't create it.
197 * It makes no sense providing OSSL_PARAM descriptors for import and
198 * export if you can't import or export.
200 if (keymgmt->free == NULL
201 || (keymgmt->new == NULL
202 && keymgmt->gen == NULL
203 && keymgmt->load == NULL)
204 || keymgmt->has == NULL
205 || (getparamfncnt != 0 && getparamfncnt != 2)
206 || (setparamfncnt != 0 && setparamfncnt != 2)
207 || (setgenparamfncnt != 0 && setgenparamfncnt != 2)
208 || (importfncnt != 0 && importfncnt != 2)
209 || (exportfncnt != 0 && exportfncnt != 2)
210 || (keymgmt->gen != NULL
211 && (keymgmt->gen_init == NULL
212 || keymgmt->gen_cleanup == NULL))) {
213 EVP_KEYMGMT_free(keymgmt);
214 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
217 keymgmt->prov = prov;
219 ossl_provider_up_ref(prov);
224 EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
226 const char *properties)
228 return evp_generic_fetch_from_prov(prov, OSSL_OP_KEYMGMT,
230 keymgmt_from_algorithm,
231 (int (*)(void *))EVP_KEYMGMT_up_ref,
232 (void (*)(void *))EVP_KEYMGMT_free);
235 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
236 const char *properties)
238 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
239 keymgmt_from_algorithm,
240 (int (*)(void *))EVP_KEYMGMT_up_ref,
241 (void (*)(void *))EVP_KEYMGMT_free);
244 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
248 CRYPTO_UP_REF(&keymgmt->refcnt, &ref);
252 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
259 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref);
262 OPENSSL_free(keymgmt->type_name);
263 ossl_provider_free(keymgmt->prov);
264 CRYPTO_FREE_REF(&keymgmt->refcnt);
265 OPENSSL_free(keymgmt);
268 const OSSL_PROVIDER *EVP_KEYMGMT_get0_provider(const EVP_KEYMGMT *keymgmt)
270 return keymgmt->prov;
273 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt)
275 return keymgmt->name_id;
278 const char *EVP_KEYMGMT_get0_description(const EVP_KEYMGMT *keymgmt)
280 return keymgmt->description;
283 const char *EVP_KEYMGMT_get0_name(const EVP_KEYMGMT *keymgmt)
285 return keymgmt->type_name;
288 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
290 return keymgmt != NULL
291 && evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
294 void EVP_KEYMGMT_do_all_provided(OSSL_LIB_CTX *libctx,
295 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
298 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
299 (void (*)(void *, void *))fn, arg,
300 keymgmt_from_algorithm,
301 (int (*)(void *))EVP_KEYMGMT_up_ref,
302 (void (*)(void *))EVP_KEYMGMT_free);
305 int EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
306 void (*fn)(const char *name, void *data),
309 if (keymgmt->prov != NULL)
310 return evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
316 * Internal API that interfaces with the method function pointers
318 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
320 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
323 * 'new' is currently mandatory on its own, but when new
324 * constructors appear, it won't be quite as mandatory,
325 * so we have a check for future cases.
327 if (keymgmt->new == NULL)
329 return keymgmt->new(provctx);
332 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
334 /* This is mandatory, no need to check for its presence */
335 keymgmt->free(keydata);
338 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
339 const OSSL_PARAM params[])
341 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
343 if (keymgmt->gen_init == NULL)
345 return keymgmt->gen_init(provctx, selection, params);
348 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
352 * It's arguable if we actually should return success in this case, as
353 * it allows the caller to set a template key, which is then ignored.
354 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
355 * so we do this in the interest of backward compatibility.
357 if (keymgmt->gen_set_template == NULL)
359 return keymgmt->gen_set_template(genctx, templ);
362 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
363 const OSSL_PARAM params[])
365 if (keymgmt->gen_set_params == NULL)
367 return keymgmt->gen_set_params(genctx, params);
370 const OSSL_PARAM *EVP_KEYMGMT_gen_settable_params(const EVP_KEYMGMT *keymgmt)
372 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
374 if (keymgmt->gen_settable_params == NULL)
376 return keymgmt->gen_settable_params(NULL, provctx);
379 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
380 OSSL_CALLBACK *cb, void *cbarg)
382 if (keymgmt->gen == NULL)
384 return keymgmt->gen(genctx, cb, cbarg);
387 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
389 if (keymgmt->gen_cleanup != NULL)
390 keymgmt->gen_cleanup(genctx);
393 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt)
395 return keymgmt != NULL && keymgmt->load != NULL;
398 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
399 const void *objref, size_t objref_sz)
401 if (evp_keymgmt_has_load(keymgmt))
402 return keymgmt->load(objref, objref_sz);
406 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
409 if (keymgmt->get_params == NULL)
411 return keymgmt->get_params(keydata, params);
414 const OSSL_PARAM *EVP_KEYMGMT_gettable_params(const EVP_KEYMGMT *keymgmt)
416 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
418 if (keymgmt->gettable_params == NULL)
420 return keymgmt->gettable_params(provctx);
423 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
424 const OSSL_PARAM params[])
426 if (keymgmt->set_params == NULL)
428 return keymgmt->set_params(keydata, params);
431 const OSSL_PARAM *EVP_KEYMGMT_settable_params(const EVP_KEYMGMT *keymgmt)
433 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
435 if (keymgmt->settable_params == NULL)
437 return keymgmt->settable_params(provctx);
440 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
442 /* This is mandatory, no need to check for its presence */
443 return keymgmt->has(keydata, selection);
446 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
447 int selection, int checktype)
449 /* We assume valid if the implementation doesn't have a function */
450 if (keymgmt->validate == NULL)
452 return keymgmt->validate(keydata, selection, checktype);
455 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
456 const void *keydata1, const void *keydata2,
459 /* We assume no match if the implementation doesn't have a function */
460 if (keymgmt->match == NULL)
462 return keymgmt->match(keydata1, keydata2, selection);
465 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
466 int selection, const OSSL_PARAM params[])
468 if (keymgmt->import == NULL)
470 return keymgmt->import(keydata, selection, params);
473 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
476 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
478 if (keymgmt->import_types_ex != NULL)
479 return keymgmt->import_types_ex(provctx, selection);
480 if (keymgmt->import_types == NULL)
482 return keymgmt->import_types(selection);
485 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
486 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
488 if (keymgmt->export == NULL)
490 return keymgmt->export(keydata, selection, param_cb, cbarg);
493 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
496 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
498 if (keymgmt->export_types_ex != NULL)
499 return keymgmt->export_types_ex(provctx, selection);
500 if (keymgmt->export_types == NULL)
502 return keymgmt->export_types(selection);
505 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt, const void *keydata_from,
508 /* We assume no dup if the implementation doesn't have a function */
509 if (keymgmt->dup == NULL)
511 return keymgmt->dup(keydata_from, selection);