1 /*
2 * Copyright 2006-2021 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 <stdio.h>
11 #include <stdlib.h>
12 #include <openssl/objects.h>
13 #include <openssl/evp.h>
14 #include "internal/numbers.h" /* includes SIZE_MAX */
15 #include "internal/cryptlib.h"
16 #include "internal/provider.h"
17 #include "internal/core.h"
18 #include "crypto/evp.h"
19 #include "evp_local.h"
20
evp_signature_new(OSSL_PROVIDER * prov)21 static EVP_SIGNATURE *evp_signature_new(OSSL_PROVIDER *prov)
22 {
23 EVP_SIGNATURE *signature = OPENSSL_zalloc(sizeof(EVP_SIGNATURE));
24
25 if (signature == NULL) {
26 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
27 return NULL;
28 }
29
30 signature->lock = CRYPTO_THREAD_lock_new();
31 if (signature->lock == NULL) {
32 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
33 OPENSSL_free(signature);
34 return NULL;
35 }
36 signature->prov = prov;
37 ossl_provider_up_ref(prov);
38 signature->refcnt = 1;
39
40 return signature;
41 }
42
evp_signature_from_algorithm(int name_id,const OSSL_ALGORITHM * algodef,OSSL_PROVIDER * prov)43 static void *evp_signature_from_algorithm(int name_id,
44 const OSSL_ALGORITHM *algodef,
45 OSSL_PROVIDER *prov)
46 {
47 const OSSL_DISPATCH *fns = algodef->implementation;
48 EVP_SIGNATURE *signature = NULL;
49 int ctxfncnt = 0, signfncnt = 0, verifyfncnt = 0, verifyrecfncnt = 0;
50 int digsignfncnt = 0, digverifyfncnt = 0;
51 int gparamfncnt = 0, sparamfncnt = 0, gmdparamfncnt = 0, smdparamfncnt = 0;
52
53 if ((signature = evp_signature_new(prov)) == NULL) {
54 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
55 goto err;
56 }
57
58 signature->name_id = name_id;
59 if ((signature->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL)
60 goto err;
61 signature->description = algodef->algorithm_description;
62
63 for (; fns->function_id != 0; fns++) {
64 switch (fns->function_id) {
65 case OSSL_FUNC_SIGNATURE_NEWCTX:
66 if (signature->newctx != NULL)
67 break;
68 signature->newctx = OSSL_FUNC_signature_newctx(fns);
69 ctxfncnt++;
70 break;
71 case OSSL_FUNC_SIGNATURE_SIGN_INIT:
72 if (signature->sign_init != NULL)
73 break;
74 signature->sign_init = OSSL_FUNC_signature_sign_init(fns);
75 signfncnt++;
76 break;
77 case OSSL_FUNC_SIGNATURE_SIGN:
78 if (signature->sign != NULL)
79 break;
80 signature->sign = OSSL_FUNC_signature_sign(fns);
81 signfncnt++;
82 break;
83 case OSSL_FUNC_SIGNATURE_VERIFY_INIT:
84 if (signature->verify_init != NULL)
85 break;
86 signature->verify_init = OSSL_FUNC_signature_verify_init(fns);
87 verifyfncnt++;
88 break;
89 case OSSL_FUNC_SIGNATURE_VERIFY:
90 if (signature->verify != NULL)
91 break;
92 signature->verify = OSSL_FUNC_signature_verify(fns);
93 verifyfncnt++;
94 break;
95 case OSSL_FUNC_SIGNATURE_VERIFY_RECOVER_INIT:
96 if (signature->verify_recover_init != NULL)
97 break;
98 signature->verify_recover_init
99 = OSSL_FUNC_signature_verify_recover_init(fns);
100 verifyrecfncnt++;
101 break;
102 case OSSL_FUNC_SIGNATURE_VERIFY_RECOVER:
103 if (signature->verify_recover != NULL)
104 break;
105 signature->verify_recover
106 = OSSL_FUNC_signature_verify_recover(fns);
107 verifyrecfncnt++;
108 break;
109 case OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT:
110 if (signature->digest_sign_init != NULL)
111 break;
112 signature->digest_sign_init
113 = OSSL_FUNC_signature_digest_sign_init(fns);
114 break;
115 case OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE:
116 if (signature->digest_sign_update != NULL)
117 break;
118 signature->digest_sign_update
119 = OSSL_FUNC_signature_digest_sign_update(fns);
120 digsignfncnt++;
121 break;
122 case OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL:
123 if (signature->digest_sign_final != NULL)
124 break;
125 signature->digest_sign_final
126 = OSSL_FUNC_signature_digest_sign_final(fns);
127 digsignfncnt++;
128 break;
129 case OSSL_FUNC_SIGNATURE_DIGEST_SIGN:
130 if (signature->digest_sign != NULL)
131 break;
132 signature->digest_sign
133 = OSSL_FUNC_signature_digest_sign(fns);
134 break;
135 case OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT:
136 if (signature->digest_verify_init != NULL)
137 break;
138 signature->digest_verify_init
139 = OSSL_FUNC_signature_digest_verify_init(fns);
140 break;
141 case OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE:
142 if (signature->digest_verify_update != NULL)
143 break;
144 signature->digest_verify_update
145 = OSSL_FUNC_signature_digest_verify_update(fns);
146 digverifyfncnt++;
147 break;
148 case OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL:
149 if (signature->digest_verify_final != NULL)
150 break;
151 signature->digest_verify_final
152 = OSSL_FUNC_signature_digest_verify_final(fns);
153 digverifyfncnt++;
154 break;
155 case OSSL_FUNC_SIGNATURE_DIGEST_VERIFY:
156 if (signature->digest_verify != NULL)
157 break;
158 signature->digest_verify
159 = OSSL_FUNC_signature_digest_verify(fns);
160 break;
161 case OSSL_FUNC_SIGNATURE_FREECTX:
162 if (signature->freectx != NULL)
163 break;
164 signature->freectx = OSSL_FUNC_signature_freectx(fns);
165 ctxfncnt++;
166 break;
167 case OSSL_FUNC_SIGNATURE_DUPCTX:
168 if (signature->dupctx != NULL)
169 break;
170 signature->dupctx = OSSL_FUNC_signature_dupctx(fns);
171 break;
172 case OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS:
173 if (signature->get_ctx_params != NULL)
174 break;
175 signature->get_ctx_params
176 = OSSL_FUNC_signature_get_ctx_params(fns);
177 gparamfncnt++;
178 break;
179 case OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS:
180 if (signature->gettable_ctx_params != NULL)
181 break;
182 signature->gettable_ctx_params
183 = OSSL_FUNC_signature_gettable_ctx_params(fns);
184 gparamfncnt++;
185 break;
186 case OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS:
187 if (signature->set_ctx_params != NULL)
188 break;
189 signature->set_ctx_params
190 = OSSL_FUNC_signature_set_ctx_params(fns);
191 sparamfncnt++;
192 break;
193 case OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS:
194 if (signature->settable_ctx_params != NULL)
195 break;
196 signature->settable_ctx_params
197 = OSSL_FUNC_signature_settable_ctx_params(fns);
198 sparamfncnt++;
199 break;
200 case OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS:
201 if (signature->get_ctx_md_params != NULL)
202 break;
203 signature->get_ctx_md_params
204 = OSSL_FUNC_signature_get_ctx_md_params(fns);
205 gmdparamfncnt++;
206 break;
207 case OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS:
208 if (signature->gettable_ctx_md_params != NULL)
209 break;
210 signature->gettable_ctx_md_params
211 = OSSL_FUNC_signature_gettable_ctx_md_params(fns);
212 gmdparamfncnt++;
213 break;
214 case OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS:
215 if (signature->set_ctx_md_params != NULL)
216 break;
217 signature->set_ctx_md_params
218 = OSSL_FUNC_signature_set_ctx_md_params(fns);
219 smdparamfncnt++;
220 break;
221 case OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS:
222 if (signature->settable_ctx_md_params != NULL)
223 break;
224 signature->settable_ctx_md_params
225 = OSSL_FUNC_signature_settable_ctx_md_params(fns);
226 smdparamfncnt++;
227 break;
228 }
229 }
230 if (ctxfncnt != 2
231 || (signfncnt == 0
232 && verifyfncnt == 0
233 && verifyrecfncnt == 0
234 && digsignfncnt == 0
235 && digverifyfncnt == 0
236 && signature->digest_sign == NULL
237 && signature->digest_verify == NULL)
238 || (signfncnt != 0 && signfncnt != 2)
239 || (verifyfncnt != 0 && verifyfncnt != 2)
240 || (verifyrecfncnt != 0 && verifyrecfncnt != 2)
241 || (digsignfncnt != 0 && digsignfncnt != 2)
242 || (digsignfncnt == 2 && signature->digest_sign_init == NULL)
243 || (digverifyfncnt != 0 && digverifyfncnt != 2)
244 || (digverifyfncnt == 2 && signature->digest_verify_init == NULL)
245 || (signature->digest_sign != NULL
246 && signature->digest_sign_init == NULL)
247 || (signature->digest_verify != NULL
248 && signature->digest_verify_init == NULL)
249 || (gparamfncnt != 0 && gparamfncnt != 2)
250 || (sparamfncnt != 0 && sparamfncnt != 2)
251 || (gmdparamfncnt != 0 && gmdparamfncnt != 2)
252 || (smdparamfncnt != 0 && smdparamfncnt != 2)) {
253 /*
254 * In order to be a consistent set of functions we must have at least
255 * a set of context functions (newctx and freectx) as well as a set of
256 * "signature" functions:
257 * (sign_init, sign) or
258 * (verify_init verify) or
259 * (verify_recover_init, verify_recover) or
260 * (digest_sign_init, digest_sign_update, digest_sign_final) or
261 * (digest_verify_init, digest_verify_update, digest_verify_final) or
262 * (digest_sign_init, digest_sign) or
263 * (digest_verify_init, digest_verify).
264 *
265 * set_ctx_params and settable_ctx_params are optional, but if one of
266 * them is present then the other one must also be present. The same
267 * applies to get_ctx_params and gettable_ctx_params. The same rules
268 * apply to the "md_params" functions. The dupctx function is optional.
269 */
270 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
271 goto err;
272 }
273
274 return signature;
275 err:
276 EVP_SIGNATURE_free(signature);
277 return NULL;
278 }
279
EVP_SIGNATURE_free(EVP_SIGNATURE * signature)280 void EVP_SIGNATURE_free(EVP_SIGNATURE *signature)
281 {
282 int i;
283
284 if (signature == NULL)
285 return;
286 CRYPTO_DOWN_REF(&signature->refcnt, &i, signature->lock);
287 if (i > 0)
288 return;
289 OPENSSL_free(signature->type_name);
290 ossl_provider_free(signature->prov);
291 CRYPTO_THREAD_lock_free(signature->lock);
292 OPENSSL_free(signature);
293 }
294
EVP_SIGNATURE_up_ref(EVP_SIGNATURE * signature)295 int EVP_SIGNATURE_up_ref(EVP_SIGNATURE *signature)
296 {
297 int ref = 0;
298
299 CRYPTO_UP_REF(&signature->refcnt, &ref, signature->lock);
300 return 1;
301 }
302
EVP_SIGNATURE_get0_provider(const EVP_SIGNATURE * signature)303 OSSL_PROVIDER *EVP_SIGNATURE_get0_provider(const EVP_SIGNATURE *signature)
304 {
305 return signature->prov;
306 }
307
EVP_SIGNATURE_fetch(OSSL_LIB_CTX * ctx,const char * algorithm,const char * properties)308 EVP_SIGNATURE *EVP_SIGNATURE_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
309 const char *properties)
310 {
311 return evp_generic_fetch(ctx, OSSL_OP_SIGNATURE, algorithm, properties,
312 evp_signature_from_algorithm,
313 (int (*)(void *))EVP_SIGNATURE_up_ref,
314 (void (*)(void *))EVP_SIGNATURE_free);
315 }
316
evp_signature_fetch_from_prov(OSSL_PROVIDER * prov,const char * algorithm,const char * properties)317 EVP_SIGNATURE *evp_signature_fetch_from_prov(OSSL_PROVIDER *prov,
318 const char *algorithm,
319 const char *properties)
320 {
321 return evp_generic_fetch_from_prov(prov, OSSL_OP_SIGNATURE,
322 algorithm, properties,
323 evp_signature_from_algorithm,
324 (int (*)(void *))EVP_SIGNATURE_up_ref,
325 (void (*)(void *))EVP_SIGNATURE_free);
326 }
327
EVP_SIGNATURE_is_a(const EVP_SIGNATURE * signature,const char * name)328 int EVP_SIGNATURE_is_a(const EVP_SIGNATURE *signature, const char *name)
329 {
330 return signature != NULL
331 && evp_is_a(signature->prov, signature->name_id, NULL, name);
332 }
333
evp_signature_get_number(const EVP_SIGNATURE * signature)334 int evp_signature_get_number(const EVP_SIGNATURE *signature)
335 {
336 return signature->name_id;
337 }
338
EVP_SIGNATURE_get0_name(const EVP_SIGNATURE * signature)339 const char *EVP_SIGNATURE_get0_name(const EVP_SIGNATURE *signature)
340 {
341 return signature->type_name;
342 }
343
EVP_SIGNATURE_get0_description(const EVP_SIGNATURE * signature)344 const char *EVP_SIGNATURE_get0_description(const EVP_SIGNATURE *signature)
345 {
346 return signature->description;
347 }
348
EVP_SIGNATURE_do_all_provided(OSSL_LIB_CTX * libctx,void (* fn)(EVP_SIGNATURE * signature,void * arg),void * arg)349 void EVP_SIGNATURE_do_all_provided(OSSL_LIB_CTX *libctx,
350 void (*fn)(EVP_SIGNATURE *signature,
351 void *arg),
352 void *arg)
353 {
354 evp_generic_do_all(libctx, OSSL_OP_SIGNATURE,
355 (void (*)(void *, void *))fn, arg,
356 evp_signature_from_algorithm,
357 (int (*)(void *))EVP_SIGNATURE_up_ref,
358 (void (*)(void *))EVP_SIGNATURE_free);
359 }
360
361
EVP_SIGNATURE_names_do_all(const EVP_SIGNATURE * signature,void (* fn)(const char * name,void * data),void * data)362 int EVP_SIGNATURE_names_do_all(const EVP_SIGNATURE *signature,
363 void (*fn)(const char *name, void *data),
364 void *data)
365 {
366 if (signature->prov != NULL)
367 return evp_names_do_all(signature->prov, signature->name_id, fn, data);
368
369 return 1;
370 }
371
EVP_SIGNATURE_gettable_ctx_params(const EVP_SIGNATURE * sig)372 const OSSL_PARAM *EVP_SIGNATURE_gettable_ctx_params(const EVP_SIGNATURE *sig)
373 {
374 void *provctx;
375
376 if (sig == NULL || sig->gettable_ctx_params == NULL)
377 return NULL;
378
379 provctx = ossl_provider_ctx(EVP_SIGNATURE_get0_provider(sig));
380 return sig->gettable_ctx_params(NULL, provctx);
381 }
382
EVP_SIGNATURE_settable_ctx_params(const EVP_SIGNATURE * sig)383 const OSSL_PARAM *EVP_SIGNATURE_settable_ctx_params(const EVP_SIGNATURE *sig)
384 {
385 void *provctx;
386
387 if (sig == NULL || sig->settable_ctx_params == NULL)
388 return NULL;
389
390 provctx = ossl_provider_ctx(EVP_SIGNATURE_get0_provider(sig));
391 return sig->settable_ctx_params(NULL, provctx);
392 }
393
evp_pkey_signature_init(EVP_PKEY_CTX * ctx,int operation,const OSSL_PARAM params[])394 static int evp_pkey_signature_init(EVP_PKEY_CTX *ctx, int operation,
395 const OSSL_PARAM params[])
396 {
397 int ret = 0;
398 void *provkey = NULL;
399 EVP_SIGNATURE *signature = NULL;
400 EVP_KEYMGMT *tmp_keymgmt = NULL;
401 const OSSL_PROVIDER *tmp_prov = NULL;
402 const char *supported_sig = NULL;
403 int iter;
404
405 if (ctx == NULL) {
406 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
407 return -2;
408 }
409
410 evp_pkey_ctx_free_old_ops(ctx);
411 ctx->operation = operation;
412
413 ERR_set_mark();
414
415 if (evp_pkey_ctx_is_legacy(ctx))
416 goto legacy;
417
418 if (ctx->pkey == NULL) {
419 ERR_clear_last_mark();
420 ERR_raise(ERR_LIB_EVP, EVP_R_NO_KEY_SET);
421 goto err;
422 }
423
424 /*
425 * Try to derive the supported signature from |ctx->keymgmt|.
426 */
427 if (!ossl_assert(ctx->pkey->keymgmt == NULL
428 || ctx->pkey->keymgmt == ctx->keymgmt)) {
429 ERR_clear_last_mark();
430 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
431 goto err;
432 }
433 supported_sig = evp_keymgmt_util_query_operation_name(ctx->keymgmt,
434 OSSL_OP_SIGNATURE);
435 if (supported_sig == NULL) {
436 ERR_clear_last_mark();
437 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
438 goto err;
439 }
440
441 /*
442 * We perform two iterations:
443 *
444 * 1. Do the normal signature fetch, using the fetching data given by
445 * the EVP_PKEY_CTX.
446 * 2. Do the provider specific signature fetch, from the same provider
447 * as |ctx->keymgmt|
448 *
449 * We then try to fetch the keymgmt from the same provider as the
450 * signature, and try to export |ctx->pkey| to that keymgmt (when
451 * this keymgmt happens to be the same as |ctx->keymgmt|, the export
452 * is a no-op, but we call it anyway to not complicate the code even
453 * more).
454 * If the export call succeeds (returns a non-NULL provider key pointer),
455 * we're done and can perform the operation itself. If not, we perform
456 * the second iteration, or jump to legacy.
457 */
458 for (iter = 1; iter < 3 && provkey == NULL; iter++) {
459 EVP_KEYMGMT *tmp_keymgmt_tofree = NULL;
460
461 /*
462 * If we're on the second iteration, free the results from the first.
463 * They are NULL on the first iteration, so no need to check what
464 * iteration we're on.
465 */
466 EVP_SIGNATURE_free(signature);
467 EVP_KEYMGMT_free(tmp_keymgmt);
468
469 switch (iter) {
470 case 1:
471 signature =
472 EVP_SIGNATURE_fetch(ctx->libctx, supported_sig, ctx->propquery);
473 if (signature != NULL)
474 tmp_prov = EVP_SIGNATURE_get0_provider(signature);
475 break;
476 case 2:
477 tmp_prov = EVP_KEYMGMT_get0_provider(ctx->keymgmt);
478 signature =
479 evp_signature_fetch_from_prov((OSSL_PROVIDER *)tmp_prov,
480 supported_sig, ctx->propquery);
481 if (signature == NULL)
482 goto legacy;
483 break;
484 }
485 if (signature == NULL)
486 continue;
487
488 /*
489 * Ensure that the key is provided, either natively, or as a cached
490 * export. We start by fetching the keymgmt with the same name as
491 * |ctx->pkey|, but from the provider of the signature method, using
492 * the same property query as when fetching the signature method.
493 * With the keymgmt we found (if we did), we try to export |ctx->pkey|
494 * to it (evp_pkey_export_to_provider() is smart enough to only actually
495
496 * export it if |tmp_keymgmt| is different from |ctx->pkey|'s keymgmt)
497 */
498 tmp_keymgmt_tofree = tmp_keymgmt =
499 evp_keymgmt_fetch_from_prov((OSSL_PROVIDER *)tmp_prov,
500 EVP_KEYMGMT_get0_name(ctx->keymgmt),
501 ctx->propquery);
502 if (tmp_keymgmt != NULL)
503 provkey = evp_pkey_export_to_provider(ctx->pkey, ctx->libctx,
504 &tmp_keymgmt, ctx->propquery);
505 if (tmp_keymgmt == NULL)
506 EVP_KEYMGMT_free(tmp_keymgmt_tofree);
507 }
508
509 if (provkey == NULL) {
510 EVP_SIGNATURE_free(signature);
511 goto legacy;
512 }
513
514 ERR_pop_to_mark();
515
516 /* No more legacy from here down to legacy: */
517
518 ctx->op.sig.signature = signature;
519 ctx->op.sig.algctx =
520 signature->newctx(ossl_provider_ctx(signature->prov), ctx->propquery);
521 if (ctx->op.sig.algctx == NULL) {
522 /* The provider key can stay in the cache */
523 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
524 goto err;
525 }
526
527 switch (operation) {
528 case EVP_PKEY_OP_SIGN:
529 if (signature->sign_init == NULL) {
530 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
531 ret = -2;
532 goto err;
533 }
534 ret = signature->sign_init(ctx->op.sig.algctx, provkey, params);
535 break;
536 case EVP_PKEY_OP_VERIFY:
537 if (signature->verify_init == NULL) {
538 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
539 ret = -2;
540 goto err;
541 }
542 ret = signature->verify_init(ctx->op.sig.algctx, provkey, params);
543 break;
544 case EVP_PKEY_OP_VERIFYRECOVER:
545 if (signature->verify_recover_init == NULL) {
546 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
547 ret = -2;
548 goto err;
549 }
550 ret = signature->verify_recover_init(ctx->op.sig.algctx, provkey,
551 params);
552 break;
553 default:
554 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
555 goto err;
556 }
557
558 if (ret <= 0) {
559 signature->freectx(ctx->op.sig.algctx);
560 ctx->op.sig.algctx = NULL;
561 goto err;
562 }
563 goto end;
564
565 legacy:
566 /*
567 * If we don't have the full support we need with provided methods,
568 * let's go see if legacy does.
569 */
570 ERR_pop_to_mark();
571 EVP_KEYMGMT_free(tmp_keymgmt);
572 tmp_keymgmt = NULL;
573
574 if (ctx->pmeth == NULL
575 || (operation == EVP_PKEY_OP_SIGN && ctx->pmeth->sign == NULL)
576 || (operation == EVP_PKEY_OP_VERIFY && ctx->pmeth->verify == NULL)
577 || (operation == EVP_PKEY_OP_VERIFYRECOVER
578 && ctx->pmeth->verify_recover == NULL)) {
579 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
580 return -2;
581 }
582
583 switch (operation) {
584 case EVP_PKEY_OP_SIGN:
585 if (ctx->pmeth->sign_init == NULL)
586 return 1;
587 ret = ctx->pmeth->sign_init(ctx);
588 break;
589 case EVP_PKEY_OP_VERIFY:
590 if (ctx->pmeth->verify_init == NULL)
591 return 1;
592 ret = ctx->pmeth->verify_init(ctx);
593 break;
594 case EVP_PKEY_OP_VERIFYRECOVER:
595 if (ctx->pmeth->verify_recover_init == NULL)
596 return 1;
597 ret = ctx->pmeth->verify_recover_init(ctx);
598 break;
599 default:
600 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
601 goto err;
602 }
603 if (ret <= 0)
604 goto err;
605 end:
606 #ifndef FIPS_MODULE
607 if (ret > 0)
608 ret = evp_pkey_ctx_use_cached_data(ctx);
609 #endif
610
611 EVP_KEYMGMT_free(tmp_keymgmt);
612 return ret;
613 err:
614 evp_pkey_ctx_free_old_ops(ctx);
615 ctx->operation = EVP_PKEY_OP_UNDEFINED;
616 EVP_KEYMGMT_free(tmp_keymgmt);
617 return ret;
618 }
619
EVP_PKEY_sign_init(EVP_PKEY_CTX * ctx)620 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
621 {
622 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_SIGN, NULL);
623 }
624
EVP_PKEY_sign_init_ex(EVP_PKEY_CTX * ctx,const OSSL_PARAM params[])625 int EVP_PKEY_sign_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
626 {
627 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_SIGN, params);
628 }
629
EVP_PKEY_sign(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen)630 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
631 unsigned char *sig, size_t *siglen,
632 const unsigned char *tbs, size_t tbslen)
633 {
634 int ret;
635
636 if (ctx == NULL) {
637 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
638 return -2;
639 }
640
641 if (ctx->operation != EVP_PKEY_OP_SIGN) {
642 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
643 return -1;
644 }
645
646 if (ctx->op.sig.algctx == NULL)
647 goto legacy;
648
649 ret = ctx->op.sig.signature->sign(ctx->op.sig.algctx, sig, siglen,
650 (sig == NULL) ? 0 : *siglen, tbs, tbslen);
651
652 return ret;
653 legacy:
654
655 if (ctx->pmeth == NULL || ctx->pmeth->sign == NULL) {
656 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
657 return -2;
658 }
659
660 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
661 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
662 }
663
EVP_PKEY_verify_init(EVP_PKEY_CTX * ctx)664 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
665 {
666 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFY, NULL);
667 }
668
EVP_PKEY_verify_init_ex(EVP_PKEY_CTX * ctx,const OSSL_PARAM params[])669 int EVP_PKEY_verify_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[])
670 {
671 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFY, params);
672 }
673
EVP_PKEY_verify(EVP_PKEY_CTX * ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen)674 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
675 const unsigned char *sig, size_t siglen,
676 const unsigned char *tbs, size_t tbslen)
677 {
678 int ret;
679
680 if (ctx == NULL) {
681 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
682 return -2;
683 }
684
685 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
686 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
687 return -1;
688 }
689
690 if (ctx->op.sig.algctx == NULL)
691 goto legacy;
692
693 ret = ctx->op.sig.signature->verify(ctx->op.sig.algctx, sig, siglen,
694 tbs, tbslen);
695
696 return ret;
697 legacy:
698 if (ctx->pmeth == NULL || ctx->pmeth->verify == NULL) {
699 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
700 return -2;
701 }
702
703 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
704 }
705
EVP_PKEY_verify_recover_init(EVP_PKEY_CTX * ctx)706 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
707 {
708 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFYRECOVER, NULL);
709 }
710
EVP_PKEY_verify_recover_init_ex(EVP_PKEY_CTX * ctx,const OSSL_PARAM params[])711 int EVP_PKEY_verify_recover_init_ex(EVP_PKEY_CTX *ctx,
712 const OSSL_PARAM params[])
713 {
714 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFYRECOVER, params);
715 }
716
EVP_PKEY_verify_recover(EVP_PKEY_CTX * ctx,unsigned char * rout,size_t * routlen,const unsigned char * sig,size_t siglen)717 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
718 unsigned char *rout, size_t *routlen,
719 const unsigned char *sig, size_t siglen)
720 {
721 int ret;
722
723 if (ctx == NULL) {
724 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
725 return -2;
726 }
727
728 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
729 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_INITIALIZED);
730 return -1;
731 }
732
733 if (ctx->op.sig.algctx == NULL)
734 goto legacy;
735
736 ret = ctx->op.sig.signature->verify_recover(ctx->op.sig.algctx, rout,
737 routlen,
738 (rout == NULL ? 0 : *routlen),
739 sig, siglen);
740 return ret;
741 legacy:
742 if (ctx->pmeth == NULL || ctx->pmeth->verify_recover == NULL) {
743 ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
744 return -2;
745 }
746 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
747 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
748 }
749
