crypto/evp/p_lib.c

   1 /*
   2  * Copyright 1995-2018 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 "internal/cryptlib.h"
  12 #include "internal/refcount.h"
  13 #include <openssl/bn.h>
  14 #include <openssl/err.h>
  15 #include <openssl/objects.h>
  16 #include <openssl/evp.h>
  17 #include <openssl/x509.h>
  18 #include <openssl/rsa.h>
  19 #include <openssl/dsa.h>
  20 #include <openssl/dh.h>
  21 #include <openssl/cmac.h>
  22 #include <openssl/engine.h>
  23 #include <openssl/params.h>
  24 #include <openssl/serializer.h>
  25 #include <openssl/core_names.h>
  26
  27 #include "crypto/asn1.h"
  28 #include "crypto/evp.h"
  29 #include "internal/provider.h"
  30 #include "evp_local.h"
  31
  32 static void evp_pkey_free_it(EVP_PKEY *key);
  33
  34 #ifndef FIPS_MODE
  35
  36 int EVP_PKEY_bits(const EVP_PKEY *pkey)
  37 {
  38     if (pkey != NULL) {
  39         if (pkey->ameth == NULL)
  40             return pkey->cache.bits;
  41         else if (pkey->ameth->pkey_bits)
  42             return pkey->ameth->pkey_bits(pkey);
  43     }
  44     return 0;
  45 }
  46
  47 int EVP_PKEY_security_bits(const EVP_PKEY *pkey)
  48 {
  49     if (pkey == NULL)
  50         return 0;
  51     if (pkey->ameth == NULL)
  52         return pkey->cache.security_bits;
  53     if (pkey->ameth->pkey_security_bits == NULL)
  54         return -2;
  55     return pkey->ameth->pkey_security_bits(pkey);
  56 }
  57
  58 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
  59 {
  60 # ifndef OPENSSL_NO_DSA
  61     if (pkey->type == EVP_PKEY_DSA) {
  62         int ret = pkey->save_parameters;
  63
  64         if (mode >= 0)
  65             pkey->save_parameters = mode;
  66         return ret;
  67     }
  68 # endif
  69 # ifndef OPENSSL_NO_EC
  70     if (pkey->type == EVP_PKEY_EC) {
  71         int ret = pkey->save_parameters;
  72
  73         if (mode >= 0)
  74             pkey->save_parameters = mode;
  75         return ret;
  76     }
  77 # endif
  78     return 0;
  79 }
  80
  81 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
  82 {
  83     if (to->type == EVP_PKEY_NONE) {
  84         if (EVP_PKEY_set_type(to, from->type) == 0)
  85             return 0;
  86     } else if (to->type != from->type) {
  87         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES);
  88         goto err;
  89     }
  90
  91     if (EVP_PKEY_missing_parameters(from)) {
  92         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS);
  93         goto err;
  94     }
  95
  96     if (!EVP_PKEY_missing_parameters(to)) {
  97         if (EVP_PKEY_cmp_parameters(to, from) == 1)
  98             return 1;
  99         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS);
 100         return 0;
 101     }
 102
 103     if (from->ameth && from->ameth->param_copy)
 104         return from->ameth->param_copy(to, from);
 105  err:
 106     return 0;
 107 }
 108
 109 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
 110 {
 111     if (pkey != NULL && pkey->ameth && pkey->ameth->param_missing)
 112         return pkey->ameth->param_missing(pkey);
 113     return 0;
 114 }
 115
 116 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
 117 {
 118     if (a->type != b->type)
 119         return -1;
 120     if (a->ameth && a->ameth->param_cmp)
 121         return a->ameth->param_cmp(a, b);
 122     return -2;
 123 }
 124
 125 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
 126 {
 127     if (a->type != b->type)
 128         return -1;
 129
 130     if (a->ameth) {
 131         int ret;
 132         /* Compare parameters if the algorithm has them */
 133         if (a->ameth->param_cmp) {
 134             ret = a->ameth->param_cmp(a, b);
 135             if (ret <= 0)
 136                 return ret;
 137         }
 138
 139         if (a->ameth->pub_cmp)
 140             return a->ameth->pub_cmp(a, b);
 141     }
 142
 143     return -2;
 144 }
 145
 146
 147 /*
 148  * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey
 149  * is NULL just return 1 or 0 if the algorithm exists.
 150  */
 151
 152 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
 153                          int len)
 154 {
 155     const EVP_PKEY_ASN1_METHOD *ameth;
 156     ENGINE **eptr = (e == NULL) ? &e :  NULL;
 157
 158     if (pkey) {
 159         if (pkey->pkey.ptr)
 160             evp_pkey_free_it(pkey);
 161         /*
 162          * If key type matches and a method exists then this lookup has
 163          * succeeded once so just indicate success.
 164          */
 165         if ((type == pkey->save_type) && pkey->ameth)
 166             return 1;
 167 # ifndef OPENSSL_NO_ENGINE
 168         /* If we have ENGINEs release them */
 169         ENGINE_finish(pkey->engine);
 170         pkey->engine = NULL;
 171         ENGINE_finish(pkey->pmeth_engine);
 172         pkey->pmeth_engine = NULL;
 173 # endif
 174     }
 175     if (str)
 176         ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
 177     else
 178         ameth = EVP_PKEY_asn1_find(eptr, type);
 179 # ifndef OPENSSL_NO_ENGINE
 180     if (pkey == NULL && eptr != NULL)
 181         ENGINE_finish(e);
 182 # endif
 183     if (ameth == NULL) {
 184         EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
 185         return 0;
 186     }
 187     if (pkey) {
 188         pkey->ameth = ameth;
 189         pkey->engine = e;
 190
 191         pkey->type = pkey->ameth->pkey_id;
 192         pkey->save_type = type;
 193     }
 194     return 1;
 195 }
 196
 197 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
 198                                        const unsigned char *priv,
 199                                        size_t len)
 200 {
 201     EVP_PKEY *ret = EVP_PKEY_new();
 202
 203     if (ret == NULL
 204             || !pkey_set_type(ret, e, type, NULL, -1)) {
 205         /* EVPerr already called */
 206         goto err;
 207     }
 208
 209     if (ret->ameth->set_priv_key == NULL) {
 210         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY,
 211                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 212         goto err;
 213     }
 214
 215     if (!ret->ameth->set_priv_key(ret, priv, len)) {
 216         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, EVP_R_KEY_SETUP_FAILED);
 217         goto err;
 218     }
 219
 220     return ret;
 221
 222  err:
 223     EVP_PKEY_free(ret);
 224     return NULL;
 225 }
 226
 227 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
 228                                       const unsigned char *pub,
 229                                       size_t len)
 230 {
 231     EVP_PKEY *ret = EVP_PKEY_new();
 232
 233     if (ret == NULL
 234             || !pkey_set_type(ret, e, type, NULL, -1)) {
 235         /* EVPerr already called */
 236         goto err;
 237     }
 238
 239     if (ret->ameth->set_pub_key == NULL) {
 240         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY,
 241                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 242         goto err;
 243     }
 244
 245     if (!ret->ameth->set_pub_key(ret, pub, len)) {
 246         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, EVP_R_KEY_SETUP_FAILED);
 247         goto err;
 248     }
 249
 250     return ret;
 251
 252  err:
 253     EVP_PKEY_free(ret);
 254     return NULL;
 255 }
 256
 257 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
 258                                  size_t *len)
 259 {
 260      if (pkey->ameth->get_priv_key == NULL) {
 261         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY,
 262                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 263         return 0;
 264     }
 265
 266     if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
 267         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, EVP_R_GET_RAW_KEY_FAILED);
 268         return 0;
 269     }
 270
 271     return 1;
 272 }
 273
 274 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
 275                                 size_t *len)
 276 {
 277      if (pkey->ameth->get_pub_key == NULL) {
 278         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY,
 279                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 280         return 0;
 281     }
 282
 283     if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
 284         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, EVP_R_GET_RAW_KEY_FAILED);
 285         return 0;
 286     }
 287
 288     return 1;
 289 }
 290
 291 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
 292                                 size_t len, const EVP_CIPHER *cipher)
 293 {
 294 # ifndef OPENSSL_NO_CMAC
 295 #  ifndef OPENSSL_NO_ENGINE
 296     const char *engine_id = e != NULL ? ENGINE_get_id(e) : NULL;
 297 #  endif
 298     const char *cipher_name = EVP_CIPHER_name(cipher);
 299     const OSSL_PROVIDER *prov = EVP_CIPHER_provider(cipher);
 300     OPENSSL_CTX *libctx =
 301         prov == NULL ? NULL : ossl_provider_library_context(prov);
 302     EVP_PKEY *ret = EVP_PKEY_new();
 303     EVP_MAC *cmac = EVP_MAC_fetch(libctx, OSSL_MAC_NAME_CMAC, NULL);
 304     EVP_MAC_CTX *cmctx = cmac != NULL ? EVP_MAC_CTX_new(cmac) : NULL;
 305     OSSL_PARAM params[4];
 306     size_t paramsn = 0;
 307
 308     if (ret == NULL
 309             || cmctx == NULL
 310             || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) {
 311         /* EVPerr already called */
 312         goto err;
 313     }
 314
 315 #  ifndef OPENSSL_NO_ENGINE
 316     if (engine_id != NULL)
 317         params[paramsn++] =
 318             OSSL_PARAM_construct_utf8_string("engine", (char *)engine_id, 0);
 319 #  endif
 320
 321     params[paramsn++] =
 322         OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_CIPHER,
 323                                          (char *)cipher_name, 0);
 324     params[paramsn++] =
 325         OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_KEY,
 326                                           (char *)priv, len);
 327     params[paramsn] = OSSL_PARAM_construct_end();
 328
 329     if (!EVP_MAC_CTX_set_params(cmctx, params)) {
 330         EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED);
 331         goto err;
 332     }
 333
 334     ret->pkey.ptr = cmctx;
 335     return ret;
 336
 337  err:
 338     EVP_PKEY_free(ret);
 339     EVP_MAC_CTX_free(cmctx);
 340     EVP_MAC_free(cmac);
 341     return NULL;
 342 # else
 343     EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY,
 344            EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 345     return NULL;
 346 # endif
 347 }
 348
 349 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
 350 {
 351     return pkey_set_type(pkey, NULL, type, NULL, -1);
 352 }
 353
 354 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
 355 {
 356     return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
 357 }
 358
 359 int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
 360 {
 361     if (pkey->type == type) {
 362         return 1; /* it already is that type */
 363     }
 364
 365     /*
 366      * The application is requesting to alias this to a different pkey type,
 367      * but not one that resolves to the base type.
 368      */
 369     if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) {
 370         EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
 371         return 0;
 372     }
 373
 374     pkey->type = type;
 375     return 1;
 376 }
 377
 378 # ifndef OPENSSL_NO_ENGINE
 379 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
 380 {
 381     if (e != NULL) {
 382         if (!ENGINE_init(e)) {
 383             EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
 384             return 0;
 385         }
 386         if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
 387             ENGINE_finish(e);
 388             EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
 389             return 0;
 390         }
 391     }
 392     ENGINE_finish(pkey->pmeth_engine);
 393     pkey->pmeth_engine = e;
 394     return 1;
 395 }
 396
 397 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
 398 {
 399     return pkey->engine;
 400 }
 401 # endif
 402 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
 403 {
 404     int alias = type;
 405
 406     if (EVP_PKEY_type(type) == EVP_PKEY_EC) {
 407         const EC_GROUP *group = EC_KEY_get0_group(key);
 408
 409         if (group != NULL && EC_GROUP_get_curve_name(group) == NID_sm2)
 410             alias = EVP_PKEY_SM2;
 411     }
 412
 413     if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
 414         return 0;
 415     if (!EVP_PKEY_set_alias_type(pkey, alias))
 416         return 0;
 417     pkey->pkey.ptr = key;
 418     return (key != NULL);
 419 }
 420
 421 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
 422 {
 423     return pkey->pkey.ptr;
 424 }
 425
 426 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
 427 {
 428     ASN1_OCTET_STRING *os = NULL;
 429     if (pkey->type != EVP_PKEY_HMAC) {
 430         EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
 431         return NULL;
 432     }
 433     os = EVP_PKEY_get0(pkey);
 434     *len = os->length;
 435     return os->data;
 436 }
 437
 438 # ifndef OPENSSL_NO_POLY1305
 439 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
 440 {
 441     ASN1_OCTET_STRING *os = NULL;
 442     if (pkey->type != EVP_PKEY_POLY1305) {
 443         EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
 444         return NULL;
 445     }
 446     os = EVP_PKEY_get0(pkey);
 447     *len = os->length;
 448     return os->data;
 449 }
 450 # endif
 451
 452 # ifndef OPENSSL_NO_SIPHASH
 453 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
 454 {
 455     ASN1_OCTET_STRING *os = NULL;
 456
 457     if (pkey->type != EVP_PKEY_SIPHASH) {
 458         EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
 459         return NULL;
 460     }
 461     os = EVP_PKEY_get0(pkey);
 462     *len = os->length;
 463     return os->data;
 464 }
 465 # endif
 466
 467 # ifndef OPENSSL_NO_RSA
 468 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
 469 {
 470     int ret = EVP_PKEY_assign_RSA(pkey, key);
 471     if (ret)
 472         RSA_up_ref(key);
 473     return ret;
 474 }
 475
 476 RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey)
 477 {
 478     if (pkey->type != EVP_PKEY_RSA && pkey->type != EVP_PKEY_RSA_PSS) {
 479         EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
 480         return NULL;
 481     }
 482     return pkey->pkey.rsa;
 483 }
 484
 485 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
 486 {
 487     RSA *ret = EVP_PKEY_get0_RSA(pkey);
 488     if (ret != NULL)
 489         RSA_up_ref(ret);
 490     return ret;
 491 }
 492 # endif
 493
 494 # ifndef OPENSSL_NO_DSA
 495 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
 496 {
 497     int ret = EVP_PKEY_assign_DSA(pkey, key);
 498     if (ret)
 499         DSA_up_ref(key);
 500     return ret;
 501 }
 502
 503 DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
 504 {
 505     if (pkey->type != EVP_PKEY_DSA) {
 506         EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
 507         return NULL;
 508     }
 509     return pkey->pkey.dsa;
 510 }
 511
 512 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
 513 {
 514     DSA *ret = EVP_PKEY_get0_DSA(pkey);
 515     if (ret != NULL)
 516         DSA_up_ref(ret);
 517     return ret;
 518 }
 519 # endif
 520
 521 # ifndef OPENSSL_NO_EC
 522
 523 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
 524 {
 525     int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
 526     if (ret)
 527         EC_KEY_up_ref(key);
 528     return ret;
 529 }
 530
 531 EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey)
 532 {
 533     if (EVP_PKEY_base_id(pkey) != EVP_PKEY_EC) {
 534         EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
 535         return NULL;
 536     }
 537     return pkey->pkey.ec;
 538 }
 539
 540 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
 541 {
 542     EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey);
 543     if (ret != NULL)
 544         EC_KEY_up_ref(ret);
 545     return ret;
 546 }
 547 # endif
 548
 549 # ifndef OPENSSL_NO_DH
 550
 551 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
 552 {
 553     int type = DH_get0_q(key) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
 554     int ret = EVP_PKEY_assign(pkey, type, key);
 555
 556     if (ret)
 557         DH_up_ref(key);
 558     return ret;
 559 }
 560
 561 DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
 562 {
 563     if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
 564         EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
 565         return NULL;
 566     }
 567     return pkey->pkey.dh;
 568 }
 569
 570 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
 571 {
 572     DH *ret = EVP_PKEY_get0_DH(pkey);
 573     if (ret != NULL)
 574         DH_up_ref(ret);
 575     return ret;
 576 }
 577 # endif
 578
 579 int EVP_PKEY_type(int type)
 580 {
 581     int ret;
 582     const EVP_PKEY_ASN1_METHOD *ameth;
 583     ENGINE *e;
 584     ameth = EVP_PKEY_asn1_find(&e, type);
 585     if (ameth)
 586         ret = ameth->pkey_id;
 587     else
 588         ret = NID_undef;
 589 # ifndef OPENSSL_NO_ENGINE
 590     ENGINE_finish(e);
 591 # endif
 592     return ret;
 593 }
 594
 595 int EVP_PKEY_id(const EVP_PKEY *pkey)
 596 {
 597     return pkey->type;
 598 }
 599
 600 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
 601 {
 602     return EVP_PKEY_type(pkey->type);
 603 }
 604
 605
 606 static int print_reset_indent(BIO **out, int pop_f_prefix, long saved_indent)
 607 {
 608     BIO_set_indent(*out, saved_indent);
 609     if (pop_f_prefix) {
 610         BIO *next = BIO_pop(*out);
 611
 612         BIO_free(*out);
 613         *out = next;
 614     }
 615     return 1;
 616 }
 617
 618 static int print_set_indent(BIO **out, int *pop_f_prefix, long *saved_indent,
 619                             long indent)
 620 {
 621     *pop_f_prefix = 0;
 622     *saved_indent = 0;
 623     if (indent > 0) {
 624         long i = BIO_get_indent(*out);
 625
 626         *saved_indent =  (i < 0 ? 0 : i);
 627         if (BIO_set_indent(*out, indent) <= 0) {
 628             if ((*out = BIO_push(BIO_new(BIO_f_prefix()), *out)) == NULL)
 629                 return 0;
 630             *pop_f_prefix = 1;
 631         }
 632         if (BIO_set_indent(*out, indent) <= 0) {
 633             print_reset_indent(out, *pop_f_prefix, *saved_indent);
 634             return 0;
 635         }
 636     }
 637     return 1;
 638 }
 639
 640 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
 641                      const char *kstr)
 642 {
 643     return BIO_indent(out, indent, 128)
 644         && BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
 645                       kstr, OBJ_nid2ln(pkey->type)) > 0;
 646 }
 647
 648 static int print_pkey(const EVP_PKEY *pkey, BIO *out, int indent,
 649                       const char *propquery /* For provided serialization */,
 650                       int (*legacy_print)(BIO *out, const EVP_PKEY *pkey,
 651                                           int indent, ASN1_PCTX *pctx),
 652                       ASN1_PCTX *legacy_pctx /* For legacy print */)
 653 {
 654     int pop_f_prefix;
 655     long saved_indent;
 656     OSSL_SERIALIZER_CTX *ctx = NULL;
 657     int ret = -2;                /* default to unsupported */
 658
 659     if (!print_set_indent(&out, &pop_f_prefix, &saved_indent, indent))
 660         return 0;
 661
 662     ctx = OSSL_SERIALIZER_CTX_new_by_EVP_PKEY(pkey, propquery);
 663     if (OSSL_SERIALIZER_CTX_get_serializer(ctx) != NULL)
 664         ret = OSSL_SERIALIZER_to_bio(ctx, out);
 665     OSSL_SERIALIZER_CTX_free(ctx);
 666
 667     if (ret != -2)
 668         goto end;
 669
 670     /* legacy fallback */
 671     if (legacy_print != NULL)
 672         ret = legacy_print(out, pkey, 0, legacy_pctx);
 673     else
 674         ret = unsup_alg(out, pkey, 0, "Public Key");
 675
 676  end:
 677     print_reset_indent(&out, pop_f_prefix, saved_indent);
 678     return ret;
 679 }
 680
 681 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
 682                           int indent, ASN1_PCTX *pctx)
 683 {
 684     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_PUBKEY_TO_TEXT_PQ,
 685                       (pkey->ameth != NULL ? pkey->ameth->pub_print : NULL),
 686                       pctx);
 687 }
 688
 689 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
 690                            int indent, ASN1_PCTX *pctx)
 691 {
 692     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_PrivateKey_TO_TEXT_PQ,
 693                       (pkey->ameth != NULL ? pkey->ameth->priv_print : NULL),
 694                       pctx);
 695 }
 696
 697 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
 698                           int indent, ASN1_PCTX *pctx)
 699 {
 700     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_Parameters_TO_TEXT_PQ,
 701                       (pkey->ameth != NULL ? pkey->ameth->param_print : NULL),
 702                       pctx);
 703 }
 704
 705 static int legacy_asn1_ctrl_to_param(EVP_PKEY *pkey, int op,
 706                                      int arg1, void *arg2)
 707 {
 708     if (pkey->pkeys[0].keymgmt == NULL)
 709         return 0;
 710     switch (op) {
 711     case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
 712         {
 713             char mdname[80] = "";
 714             int nid;
 715             int rv = EVP_PKEY_get_default_digest_name(pkey, mdname,
 716                                                       sizeof(mdname));
 717
 718             if (rv <= 0)
 719                 return rv;
 720             nid = OBJ_sn2nid(mdname);
 721             if (nid == NID_undef)
 722                 nid = OBJ_ln2nid(mdname);
 723             if (nid == NID_undef)
 724                 return 0;
 725             *(int *)arg2 = nid;
 726             return 1;
 727         }
 728     default:
 729         return -2;
 730     }
 731 }
 732
 733 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
 734 {
 735     if (pkey->ameth == NULL)
 736         return legacy_asn1_ctrl_to_param(pkey, op, arg1, arg2);
 737     if (pkey->ameth->pkey_ctrl == NULL)
 738         return -2;
 739     return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
 740 }
 741
 742 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
 743 {
 744     return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
 745 }
 746
 747 int EVP_PKEY_get_default_digest_name(EVP_PKEY *pkey,
 748                                      char *mdname, size_t mdname_sz)
 749 {
 750     if (pkey->ameth == NULL) {
 751         OSSL_PARAM params[3];
 752         char mddefault[100] = "";
 753         char mdmandatory[100] = "";
 754
 755         params[0] =
 756             OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST,
 757                                              mddefault, sizeof(mddefault));
 758         params[1] =
 759             OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_MANDATORY_DIGEST,
 760                                              mdmandatory,
 761                                              sizeof(mdmandatory));
 762         params[2] = OSSL_PARAM_construct_end();
 763         if (!evp_keymgmt_get_key_params(pkey->pkeys[0].keymgmt,
 764                                         pkey->pkeys[0].provdata,
 765                                         params))
 766             return 0;
 767         if (mdmandatory[0] != '\0') {
 768             OPENSSL_strlcpy(mdname, mdmandatory, mdname_sz);
 769             return 2;
 770         }
 771         OPENSSL_strlcpy(mdname, mddefault, mdname_sz);
 772         return 1;
 773     }
 774
 775     {
 776         int nid = NID_undef;
 777         int rv = EVP_PKEY_get_default_digest_nid(pkey, &nid);
 778         const char *name = rv > 0 ? OBJ_nid2sn(nid) : NULL;
 779
 780         if (rv > 0)
 781             OPENSSL_strlcpy(mdname, name, mdname_sz);
 782         return rv;
 783     }
 784 }
 785
 786 int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid)
 787 {
 788     int rv, default_nid;
 789
 790     rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SUPPORTS_MD_NID, nid, NULL);
 791     if (rv == -2) {
 792         /*
 793          * If there is a mandatory default digest and this isn't it, then
 794          * the answer is 'no'.
 795          */
 796         rv = EVP_PKEY_get_default_digest_nid(pkey, &default_nid);
 797         if (rv == 2)
 798             return (nid == default_nid);
 799         /* zero is an error from EVP_PKEY_get_default_digest_nid() */
 800         if (rv == 0)
 801             return -1;
 802     }
 803     return rv;
 804 }
 805
 806 int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
 807                                const unsigned char *pt, size_t ptlen)
 808 {
 809     if (ptlen > INT_MAX)
 810         return 0;
 811     if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
 812                            (void *)pt) <= 0)
 813         return 0;
 814     return 1;
 815 }
 816
 817 size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
 818 {
 819     int rv;
 820     rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);
 821     if (rv <= 0)
 822         return 0;
 823     return rv;
 824 }
 825
 826 #endif /* FIPS_MODE */
 827
 828 /*- All methods below can also be used in FIPS_MODE */
 829
 830 EVP_PKEY *EVP_PKEY_new(void)
 831 {
 832     EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
 833
 834     if (ret == NULL) {
 835         EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
 836         return NULL;
 837     }
 838     ret->type = EVP_PKEY_NONE;
 839     ret->save_type = EVP_PKEY_NONE;
 840     ret->references = 1;
 841     ret->save_parameters = 1;
 842     ret->lock = CRYPTO_THREAD_lock_new();
 843     if (ret->lock == NULL) {
 844         EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
 845         OPENSSL_free(ret);
 846         return NULL;
 847     }
 848     return ret;
 849 }
 850
 851 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
 852 {
 853     int i;
 854
 855     if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
 856         return 0;
 857
 858     REF_PRINT_COUNT("EVP_PKEY", pkey);
 859     REF_ASSERT_ISNT(i < 2);
 860     return ((i > 1) ? 1 : 0);
 861 }
 862
 863 static void evp_pkey_free_it(EVP_PKEY *x)
 864 {
 865     /* internal function; x is never NULL */
 866
 867     evp_keymgmt_util_clear_pkey_cache(x);
 868
 869     if (x->ameth && x->ameth->pkey_free) {
 870         x->ameth->pkey_free(x);
 871         x->pkey.ptr = NULL;
 872     }
 873 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 874     ENGINE_finish(x->engine);
 875     x->engine = NULL;
 876     ENGINE_finish(x->pmeth_engine);
 877     x->pmeth_engine = NULL;
 878 #endif
 879 }
 880
 881 void EVP_PKEY_free(EVP_PKEY *x)
 882 {
 883     int i;
 884
 885     if (x == NULL)
 886         return;
 887
 888     CRYPTO_DOWN_REF(&x->references, &i, x->lock);
 889     REF_PRINT_COUNT("EVP_PKEY", x);
 890     if (i > 0)
 891         return;
 892     REF_ASSERT_ISNT(i < 0);
 893     evp_pkey_free_it(x);
 894     CRYPTO_THREAD_lock_free(x->lock);
 895 #ifndef FIPS_MODE
 896     sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
 897 #endif
 898     OPENSSL_free(x);
 899 }
 900
 901 int EVP_PKEY_size(const EVP_PKEY *pkey)
 902 {
 903     if (pkey != NULL) {
 904         if (pkey->ameth == NULL)
 905             return pkey->cache.size;
 906         else if (pkey->ameth->pkey_size != NULL)
 907             return pkey->ameth->pkey_size(pkey);
 908     }
 909     return 0;
 910 }
 911
 912 void *evp_pkey_make_provided(EVP_PKEY *pk, OPENSSL_CTX *libctx,
 913                              EVP_KEYMGMT **keymgmt, const char *propquery,
 914                              int domainparams)
 915 {
 916     EVP_KEYMGMT *allocated_keymgmt = NULL;
 917     EVP_KEYMGMT *tmp_keymgmt = NULL;
 918     void *provdata = NULL;
 919
 920     if (pk == NULL)
 921         return NULL;
 922
 923     if (keymgmt != NULL) {
 924         tmp_keymgmt = *keymgmt;
 925         *keymgmt = NULL;
 926     }
 927
 928     if (tmp_keymgmt == NULL) {
 929         EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_pkey(libctx, pk, propquery);
 930
 931         if (ctx != NULL && ctx->keytype != NULL)
 932             tmp_keymgmt = allocated_keymgmt =
 933                 EVP_KEYMGMT_fetch(ctx->libctx, ctx->keytype, propquery);
 934         EVP_PKEY_CTX_free(ctx);
 935     }
 936
 937     if (tmp_keymgmt != NULL)
 938         provdata =
 939             evp_keymgmt_util_export_to_provider(pk, tmp_keymgmt, domainparams);
 940
 941     /*
 942      * If nothing was exported, |tmp_keymgmt| might point at a freed
 943      * EVP_KEYMGMT, so we clear it to be safe.  It shouldn't be useful for
 944      * the caller either way in that case.
 945      */
 946     if (provdata == NULL)
 947         tmp_keymgmt = NULL;
 948
 949     if (keymgmt != NULL)
 950         *keymgmt = tmp_keymgmt;
 951
 952     EVP_KEYMGMT_free(allocated_keymgmt);
 953     return provdata;
 954 }