1/* 2 * Copyright 2006-2022 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 <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 21static 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 43static 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 280void 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 295int 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 303OSSL_PROVIDER *EVP_SIGNATURE_get0_provider(const EVP_SIGNATURE *signature) 304{ 305 return signature->prov; 306} 307 308EVP_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 317EVP_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 328int 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 334int evp_signature_get_number(const EVP_SIGNATURE *signature) 335{ 336 return signature->name_id; 337} 338 339const char *EVP_SIGNATURE_get0_name(const EVP_SIGNATURE *signature) 340{ 341 return signature->type_name; 342} 343 344const char *EVP_SIGNATURE_get0_description(const EVP_SIGNATURE *signature) 345{ 346 return signature->description; 347} 348 349void 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 362int 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 372const 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 383const 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 394static 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 620int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) 621{ 622 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_SIGN, NULL); 623} 624 625int 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 630int 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 664int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) 665{ 666 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFY, NULL); 667} 668 669int 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 674int 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 706int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) 707{ 708 return evp_pkey_signature_init(ctx, EVP_PKEY_OP_VERIFYRECOVER, NULL); 709} 710 711int 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 717int 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