2 * Copyright 2019 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;
42 if ((keymgmt = keymgmt_new()) == NULL) {
43 EVP_KEYMGMT_free(keymgmt);
46 keymgmt->name_id = name_id;
48 for (; fns->function_id != 0; fns++) {
49 switch (fns->function_id) {
50 case OSSL_FUNC_KEYMGMT_NEW:
51 if (keymgmt->new == NULL)
52 keymgmt->new = OSSL_get_OP_keymgmt_new(fns);
54 case OSSL_FUNC_KEYMGMT_FREE:
55 if (keymgmt->free == NULL)
56 keymgmt->free = OSSL_get_OP_keymgmt_free(fns);
58 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
59 if (keymgmt->get_params == NULL)
60 keymgmt->get_params = OSSL_get_OP_keymgmt_get_params(fns);
62 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
63 if (keymgmt->gettable_params == NULL)
64 keymgmt->gettable_params =
65 OSSL_get_OP_keymgmt_gettable_params(fns);
67 case OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME:
68 if (keymgmt->query_operation_name == NULL)
69 keymgmt->query_operation_name =
70 OSSL_get_OP_keymgmt_query_operation_name(fns);
72 case OSSL_FUNC_KEYMGMT_HAS:
73 if (keymgmt->has == NULL)
74 keymgmt->has = OSSL_get_OP_keymgmt_has(fns);
76 case OSSL_FUNC_KEYMGMT_VALIDATE:
77 if (keymgmt->validate == NULL)
78 keymgmt->validate = OSSL_get_OP_keymgmt_validate(fns);
80 case OSSL_FUNC_KEYMGMT_IMPORT:
81 if (keymgmt->import == NULL)
82 keymgmt->import = OSSL_get_OP_keymgmt_import(fns);
84 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
85 if (keymgmt->import_types == NULL)
86 keymgmt->import_types = OSSL_get_OP_keymgmt_import_types(fns);
88 case OSSL_FUNC_KEYMGMT_EXPORT:
89 if (keymgmt->export == NULL)
90 keymgmt->export = OSSL_get_OP_keymgmt_export(fns);
92 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
93 if (keymgmt->export_types == NULL)
94 keymgmt->export_types = OSSL_get_OP_keymgmt_export_types(fns);
99 * Try to check that the method is sensible.
100 * At least one constructor and the destructor are MANDATORY
101 * The functions 'has' is MANDATORY
102 * It makes no sense being able to free stuff if you can't create it.
103 * It makes no sense providing OSSL_PARAM descriptors for import and
104 * export if you can't import or export.
106 if (keymgmt->free == NULL
107 || keymgmt->new == NULL
108 || keymgmt->has == NULL
109 || (keymgmt->gettable_params != NULL
110 && keymgmt->get_params == NULL)
111 || (keymgmt->import_types != NULL
112 && keymgmt->import == NULL)
113 || (keymgmt->export_types != NULL
114 && keymgmt->export == NULL)) {
115 EVP_KEYMGMT_free(keymgmt);
116 EVPerr(0, EVP_R_INVALID_PROVIDER_FUNCTIONS);
119 keymgmt->prov = prov;
121 ossl_provider_up_ref(prov);
126 EVP_KEYMGMT *evp_keymgmt_fetch_by_number(OPENSSL_CTX *ctx, int name_id,
127 const char *properties)
129 return evp_generic_fetch_by_number(ctx,
130 OSSL_OP_KEYMGMT, name_id, properties,
131 keymgmt_from_dispatch,
132 (int (*)(void *))EVP_KEYMGMT_up_ref,
133 (void (*)(void *))EVP_KEYMGMT_free);
136 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OPENSSL_CTX *ctx, const char *algorithm,
137 const char *properties)
139 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
140 keymgmt_from_dispatch,
141 (int (*)(void *))EVP_KEYMGMT_up_ref,
142 (void (*)(void *))EVP_KEYMGMT_free);
145 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
149 CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
153 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
160 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
163 ossl_provider_free(keymgmt->prov);
164 CRYPTO_THREAD_lock_free(keymgmt->lock);
165 OPENSSL_free(keymgmt);
168 const OSSL_PROVIDER *EVP_KEYMGMT_provider(const EVP_KEYMGMT *keymgmt)
170 return keymgmt->prov;
173 int EVP_KEYMGMT_number(const EVP_KEYMGMT *keymgmt)
175 return keymgmt->name_id;
178 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
180 return evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
183 void EVP_KEYMGMT_do_all_provided(OPENSSL_CTX *libctx,
184 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
187 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
188 (void (*)(void *, void *))fn, arg,
189 keymgmt_from_dispatch,
190 (void (*)(void *))EVP_KEYMGMT_free);
193 void EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
194 void (*fn)(const char *name, void *data),
197 if (keymgmt->prov != NULL)
198 evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
202 * Internal API that interfaces with the method function pointers
204 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
206 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(keymgmt));
209 * TODO(3.0) 'new' is currently mandatory on its own, but when new
210 * constructors appear, it won't be quite as mandatory, so we have
211 * a check for future cases.
213 if (keymgmt->new == NULL)
215 return keymgmt->new(provctx);
218 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
220 /* This is mandatory, no need to check for its presence */
221 keymgmt->free(keydata);
224 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
227 if (keymgmt->get_params == NULL)
229 return keymgmt->get_params(keydata, params);
232 const OSSL_PARAM *evp_keymgmt_gettable_params(const EVP_KEYMGMT *keymgmt)
234 if (keymgmt->gettable_params == NULL)
236 return keymgmt->gettable_params();
239 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
241 /* This is mandatory, no need to check for its presence */
242 return keymgmt->has(keydata, selection);
245 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
248 /* We assume valid if the implementation doesn't have a function */
249 if (keymgmt->validate == NULL)
251 return keymgmt->validate(keydata, selection);
254 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
255 int selection, const OSSL_PARAM params[])
257 if (keymgmt->import == NULL)
259 return keymgmt->import(keydata, selection, params);
262 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
265 if (keymgmt->import_types == NULL)
267 return keymgmt->import_types(selection);
270 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
271 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
273 if (keymgmt->export == NULL)
275 return keymgmt->export(keydata, selection, param_cb, cbarg);
278 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
281 if (keymgmt->export_types == NULL)
283 return keymgmt->export_types(selection);