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source: vbox/trunk/src/libs/openssl-3.1.0/crypto/evp/keymgmt_meth.c@ 99371

最後變更 在這個檔案從99371是 99366,由 vboxsync 提交於 23 月 前

openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
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1/*
2 * Copyright 2019-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
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"
19
20static void *keymgmt_new(void)
21{
22 EVP_KEYMGMT *keymgmt = NULL;
23
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);
28 return NULL;
29 }
30
31 keymgmt->refcnt = 1;
32
33 return keymgmt;
34}
35
36static void *keymgmt_from_algorithm(int name_id,
37 const OSSL_ALGORITHM *algodef,
38 OSSL_PROVIDER *prov)
39{
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;
45
46 if ((keymgmt = keymgmt_new()) == NULL)
47 return NULL;
48
49 keymgmt->name_id = name_id;
50 if ((keymgmt->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
51 EVP_KEYMGMT_free(keymgmt);
52 return NULL;
53 }
54 keymgmt->description = algodef->algorithm_description;
55
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);
61 break;
62 case OSSL_FUNC_KEYMGMT_GEN_INIT:
63 if (keymgmt->gen_init == NULL)
64 keymgmt->gen_init = OSSL_FUNC_keymgmt_gen_init(fns);
65 break;
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);
70 break;
71 case OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS:
72 if (keymgmt->gen_set_params == NULL) {
73 setgenparamfncnt++;
74 keymgmt->gen_set_params =
75 OSSL_FUNC_keymgmt_gen_set_params(fns);
76 }
77 break;
78 case OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS:
79 if (keymgmt->gen_settable_params == NULL) {
80 setgenparamfncnt++;
81 keymgmt->gen_settable_params =
82 OSSL_FUNC_keymgmt_gen_settable_params(fns);
83 }
84 break;
85 case OSSL_FUNC_KEYMGMT_GEN:
86 if (keymgmt->gen == NULL)
87 keymgmt->gen = OSSL_FUNC_keymgmt_gen(fns);
88 break;
89 case OSSL_FUNC_KEYMGMT_GEN_CLEANUP:
90 if (keymgmt->gen_cleanup == NULL)
91 keymgmt->gen_cleanup = OSSL_FUNC_keymgmt_gen_cleanup(fns);
92 break;
93 case OSSL_FUNC_KEYMGMT_FREE:
94 if (keymgmt->free == NULL)
95 keymgmt->free = OSSL_FUNC_keymgmt_free(fns);
96 break;
97 case OSSL_FUNC_KEYMGMT_LOAD:
98 if (keymgmt->load == NULL)
99 keymgmt->load = OSSL_FUNC_keymgmt_load(fns);
100 break;
101 case OSSL_FUNC_KEYMGMT_GET_PARAMS:
102 if (keymgmt->get_params == NULL) {
103 getparamfncnt++;
104 keymgmt->get_params = OSSL_FUNC_keymgmt_get_params(fns);
105 }
106 break;
107 case OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS:
108 if (keymgmt->gettable_params == NULL) {
109 getparamfncnt++;
110 keymgmt->gettable_params =
111 OSSL_FUNC_keymgmt_gettable_params(fns);
112 }
113 break;
114 case OSSL_FUNC_KEYMGMT_SET_PARAMS:
115 if (keymgmt->set_params == NULL) {
116 setparamfncnt++;
117 keymgmt->set_params = OSSL_FUNC_keymgmt_set_params(fns);
118 }
119 break;
120 case OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS:
121 if (keymgmt->settable_params == NULL) {
122 setparamfncnt++;
123 keymgmt->settable_params =
124 OSSL_FUNC_keymgmt_settable_params(fns);
125 }
126 break;
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);
131 break;
132 case OSSL_FUNC_KEYMGMT_HAS:
133 if (keymgmt->has == NULL)
134 keymgmt->has = OSSL_FUNC_keymgmt_has(fns);
135 break;
136 case OSSL_FUNC_KEYMGMT_DUP:
137 if (keymgmt->dup == NULL)
138 keymgmt->dup = OSSL_FUNC_keymgmt_dup(fns);
139 break;
140 case OSSL_FUNC_KEYMGMT_VALIDATE:
141 if (keymgmt->validate == NULL)
142 keymgmt->validate = OSSL_FUNC_keymgmt_validate(fns);
143 break;
144 case OSSL_FUNC_KEYMGMT_MATCH:
145 if (keymgmt->match == NULL)
146 keymgmt->match = OSSL_FUNC_keymgmt_match(fns);
147 break;
148 case OSSL_FUNC_KEYMGMT_IMPORT:
149 if (keymgmt->import == NULL) {
150 importfncnt++;
151 keymgmt->import = OSSL_FUNC_keymgmt_import(fns);
152 }
153 break;
154 case OSSL_FUNC_KEYMGMT_IMPORT_TYPES:
155 if (keymgmt->import_types == NULL) {
156 importfncnt++;
157 keymgmt->import_types = OSSL_FUNC_keymgmt_import_types(fns);
158 }
159 break;
160 case OSSL_FUNC_KEYMGMT_EXPORT:
161 if (keymgmt->export == NULL) {
162 exportfncnt++;
163 keymgmt->export = OSSL_FUNC_keymgmt_export(fns);
164 }
165 break;
166 case OSSL_FUNC_KEYMGMT_EXPORT_TYPES:
167 if (keymgmt->export_types == NULL) {
168 exportfncnt++;
169 keymgmt->export_types = OSSL_FUNC_keymgmt_export_types(fns);
170 }
171 break;
172 }
173 }
174 /*
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.
181 */
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);
197 return NULL;
198 }
199 keymgmt->prov = prov;
200 if (prov != NULL)
201 ossl_provider_up_ref(prov);
202
203 return keymgmt;
204}
205
206EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
207 const char *name,
208 const char *properties)
209{
210 return evp_generic_fetch_from_prov(prov, OSSL_OP_KEYMGMT,
211 name, properties,
212 keymgmt_from_algorithm,
213 (int (*)(void *))EVP_KEYMGMT_up_ref,
214 (void (*)(void *))EVP_KEYMGMT_free);
215}
216
217EVP_KEYMGMT *EVP_KEYMGMT_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
218 const char *properties)
219{
220 return evp_generic_fetch(ctx, OSSL_OP_KEYMGMT, algorithm, properties,
221 keymgmt_from_algorithm,
222 (int (*)(void *))EVP_KEYMGMT_up_ref,
223 (void (*)(void *))EVP_KEYMGMT_free);
224}
225
226int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt)
227{
228 int ref = 0;
229
230 CRYPTO_UP_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
231 return 1;
232}
233
234void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt)
235{
236 int ref = 0;
237
238 if (keymgmt == NULL)
239 return;
240
241 CRYPTO_DOWN_REF(&keymgmt->refcnt, &ref, keymgmt->lock);
242 if (ref > 0)
243 return;
244 OPENSSL_free(keymgmt->type_name);
245 ossl_provider_free(keymgmt->prov);
246 CRYPTO_THREAD_lock_free(keymgmt->lock);
247 OPENSSL_free(keymgmt);
248}
249
250const OSSL_PROVIDER *EVP_KEYMGMT_get0_provider(const EVP_KEYMGMT *keymgmt)
251{
252 return keymgmt->prov;
253}
254
255int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt)
256{
257 return keymgmt->name_id;
258}
259
260const char *EVP_KEYMGMT_get0_description(const EVP_KEYMGMT *keymgmt)
261{
262 return keymgmt->description;
263}
264
265const char *EVP_KEYMGMT_get0_name(const EVP_KEYMGMT *keymgmt)
266{
267 return keymgmt->type_name;
268}
269
270int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name)
271{
272 return keymgmt != NULL
273 && evp_is_a(keymgmt->prov, keymgmt->name_id, NULL, name);
274}
275
276void EVP_KEYMGMT_do_all_provided(OSSL_LIB_CTX *libctx,
277 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
278 void *arg)
279{
280 evp_generic_do_all(libctx, OSSL_OP_KEYMGMT,
281 (void (*)(void *, void *))fn, arg,
282 keymgmt_from_algorithm,
283 (int (*)(void *))EVP_KEYMGMT_up_ref,
284 (void (*)(void *))EVP_KEYMGMT_free);
285}
286
287int EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
288 void (*fn)(const char *name, void *data),
289 void *data)
290{
291 if (keymgmt->prov != NULL)
292 return evp_names_do_all(keymgmt->prov, keymgmt->name_id, fn, data);
293
294 return 1;
295}
296
297/*
298 * Internal API that interfaces with the method function pointers
299 */
300void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt)
301{
302 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
303
304 /*
305 * 'new' is currently mandatory on its own, but when new
306 * constructors appear, it won't be quite as mandatory,
307 * so we have a check for future cases.
308 */
309 if (keymgmt->new == NULL)
310 return NULL;
311 return keymgmt->new(provctx);
312}
313
314void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keydata)
315{
316 /* This is mandatory, no need to check for its presence */
317 keymgmt->free(keydata);
318}
319
320void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
321 const OSSL_PARAM params[])
322{
323 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
324
325 if (keymgmt->gen_init == NULL)
326 return NULL;
327 return keymgmt->gen_init(provctx, selection, params);
328}
329
330int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
331 void *template)
332{
333 /*
334 * It's arguable if we actually should return success in this case, as
335 * it allows the caller to set a template key, which is then ignored.
336 * However, this is how the legacy methods (EVP_PKEY_METHOD) operate,
337 * so we do this in the interest of backward compatibility.
338 */
339 if (keymgmt->gen_set_template == NULL)
340 return 1;
341 return keymgmt->gen_set_template(genctx, template);
342}
343
344int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
345 const OSSL_PARAM params[])
346{
347 if (keymgmt->gen_set_params == NULL)
348 return 0;
349 return keymgmt->gen_set_params(genctx, params);
350}
351
352const OSSL_PARAM *EVP_KEYMGMT_gen_settable_params(const EVP_KEYMGMT *keymgmt)
353{
354 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
355
356 if (keymgmt->gen_settable_params == NULL)
357 return NULL;
358 return keymgmt->gen_settable_params(NULL, provctx);
359}
360
361void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
362 OSSL_CALLBACK *cb, void *cbarg)
363{
364 if (keymgmt->gen == NULL)
365 return NULL;
366 return keymgmt->gen(genctx, cb, cbarg);
367}
368
369void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx)
370{
371 if (keymgmt->gen != NULL)
372 keymgmt->gen_cleanup(genctx);
373}
374
375int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt)
376{
377 return keymgmt != NULL && keymgmt->load != NULL;
378}
379
380void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
381 const void *objref, size_t objref_sz)
382{
383 if (evp_keymgmt_has_load(keymgmt))
384 return keymgmt->load(objref, objref_sz);
385 return NULL;
386}
387
388int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt, void *keydata,
389 OSSL_PARAM params[])
390{
391 if (keymgmt->get_params == NULL)
392 return 1;
393 return keymgmt->get_params(keydata, params);
394}
395
396const OSSL_PARAM *EVP_KEYMGMT_gettable_params(const EVP_KEYMGMT *keymgmt)
397{
398 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
399
400 if (keymgmt->gettable_params == NULL)
401 return NULL;
402 return keymgmt->gettable_params(provctx);
403}
404
405int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt, void *keydata,
406 const OSSL_PARAM params[])
407{
408 if (keymgmt->set_params == NULL)
409 return 1;
410 return keymgmt->set_params(keydata, params);
411}
412
413const OSSL_PARAM *EVP_KEYMGMT_settable_params(const EVP_KEYMGMT *keymgmt)
414{
415 void *provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(keymgmt));
416
417 if (keymgmt->settable_params == NULL)
418 return NULL;
419 return keymgmt->settable_params(provctx);
420}
421
422int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keydata, int selection)
423{
424 /* This is mandatory, no need to check for its presence */
425 return keymgmt->has(keydata, selection);
426}
427
428int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
429 int selection, int checktype)
430{
431 /* We assume valid if the implementation doesn't have a function */
432 if (keymgmt->validate == NULL)
433 return 1;
434 return keymgmt->validate(keydata, selection, checktype);
435}
436
437int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
438 const void *keydata1, const void *keydata2,
439 int selection)
440{
441 /* We assume no match if the implementation doesn't have a function */
442 if (keymgmt->match == NULL)
443 return 0;
444 return keymgmt->match(keydata1, keydata2, selection);
445}
446
447int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
448 int selection, const OSSL_PARAM params[])
449{
450 if (keymgmt->import == NULL)
451 return 0;
452 return keymgmt->import(keydata, selection, params);
453}
454
455const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
456 int selection)
457{
458 if (keymgmt->import_types == NULL)
459 return NULL;
460 return keymgmt->import_types(selection);
461}
462
463int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
464 int selection, OSSL_CALLBACK *param_cb, void *cbarg)
465{
466 if (keymgmt->export == NULL)
467 return 0;
468 return keymgmt->export(keydata, selection, param_cb, cbarg);
469}
470
471const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
472 int selection)
473{
474 if (keymgmt->export_types == NULL)
475 return NULL;
476 return keymgmt->export_types(selection);
477}
478
479void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt, const void *keydata_from,
480 int selection)
481{
482 /* We assume no dup if the implementation doesn't have a function */
483 if (keymgmt->dup == NULL)
484 return NULL;
485 return keymgmt->dup(keydata_from, selection);
486}
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