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
  31 static void evp_pkey_free_it(EVP_PKEY *key);
  32
  33 #ifndef FIPS_MODE
  34
  35 int EVP_PKEY_bits(const EVP_PKEY *pkey)
  36 {
  37     if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
  38         return pkey->ameth->pkey_bits(pkey);
  39     return 0;
  40 }
  41
  42 int EVP_PKEY_security_bits(const EVP_PKEY *pkey)
  43 {
  44     if (pkey == NULL)
  45         return 0;
  46     if (pkey->ameth == NULL || pkey->ameth->pkey_security_bits == NULL)
  47         return -2;
  48     return pkey->ameth->pkey_security_bits(pkey);
  49 }
  50
  51 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
  52 {
  53 # ifndef OPENSSL_NO_DSA
  54     if (pkey->type == EVP_PKEY_DSA) {
  55         int ret = pkey->save_parameters;
  56
  57         if (mode >= 0)
  58             pkey->save_parameters = mode;
  59         return ret;
  60     }
  61 # endif
  62 # ifndef OPENSSL_NO_EC
  63     if (pkey->type == EVP_PKEY_EC) {
  64         int ret = pkey->save_parameters;
  65
  66         if (mode >= 0)
  67             pkey->save_parameters = mode;
  68         return ret;
  69     }
  70 # endif
  71     return 0;
  72 }
  73
  74 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
  75 {
  76     if (to->type == EVP_PKEY_NONE) {
  77         if (EVP_PKEY_set_type(to, from->type) == 0)
  78             return 0;
  79     } else if (to->type != from->type) {
  80         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_KEY_TYPES);
  81         goto err;
  82     }
  83
  84     if (EVP_PKEY_missing_parameters(from)) {
  85         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS);
  86         goto err;
  87     }
  88
  89     if (!EVP_PKEY_missing_parameters(to)) {
  90         if (EVP_PKEY_cmp_parameters(to, from) == 1)
  91             return 1;
  92         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS);
  93         return 0;
  94     }
  95
  96     if (from->ameth && from->ameth->param_copy)
  97         return from->ameth->param_copy(to, from);
  98  err:
  99     return 0;
 100 }
 101
 102 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
 103 {
 104     if (pkey != NULL && pkey->ameth && pkey->ameth->param_missing)
 105         return pkey->ameth->param_missing(pkey);
 106     return 0;
 107 }
 108
 109 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
 110 {
 111     if (a->type != b->type)
 112         return -1;
 113     if (a->ameth && a->ameth->param_cmp)
 114         return a->ameth->param_cmp(a, b);
 115     return -2;
 116 }
 117
 118 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
 119 {
 120     if (a->type != b->type)
 121         return -1;
 122
 123     if (a->ameth) {
 124         int ret;
 125         /* Compare parameters if the algorithm has them */
 126         if (a->ameth->param_cmp) {
 127             ret = a->ameth->param_cmp(a, b);
 128             if (ret <= 0)
 129                 return ret;
 130         }
 131
 132         if (a->ameth->pub_cmp)
 133             return a->ameth->pub_cmp(a, b);
 134     }
 135
 136     return -2;
 137 }
 138
 139
 140 /*
 141  * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey
 142  * is NULL just return 1 or 0 if the algorithm exists.
 143  */
 144
 145 static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
 146                          int len)
 147 {
 148     const EVP_PKEY_ASN1_METHOD *ameth;
 149     ENGINE **eptr = (e == NULL) ? &e :  NULL;
 150
 151     if (pkey) {
 152         if (pkey->pkey.ptr)
 153             evp_pkey_free_it(pkey);
 154         /*
 155          * If key type matches and a method exists then this lookup has
 156          * succeeded once so just indicate success.
 157          */
 158         if ((type == pkey->save_type) && pkey->ameth)
 159             return 1;
 160 # ifndef OPENSSL_NO_ENGINE
 161         /* If we have ENGINEs release them */
 162         ENGINE_finish(pkey->engine);
 163         pkey->engine = NULL;
 164         ENGINE_finish(pkey->pmeth_engine);
 165         pkey->pmeth_engine = NULL;
 166 # endif
 167     }
 168     if (str)
 169         ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
 170     else
 171         ameth = EVP_PKEY_asn1_find(eptr, type);
 172 # ifndef OPENSSL_NO_ENGINE
 173     if (pkey == NULL && eptr != NULL)
 174         ENGINE_finish(e);
 175 # endif
 176     if (ameth == NULL) {
 177         EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
 178         return 0;
 179     }
 180     if (pkey) {
 181         pkey->ameth = ameth;
 182         pkey->engine = e;
 183
 184         pkey->type = pkey->ameth->pkey_id;
 185         pkey->save_type = type;
 186     }
 187     return 1;
 188 }
 189
 190 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
 191                                        const unsigned char *priv,
 192                                        size_t len)
 193 {
 194     EVP_PKEY *ret = EVP_PKEY_new();
 195
 196     if (ret == NULL
 197             || !pkey_set_type(ret, e, type, NULL, -1)) {
 198         /* EVPerr already called */
 199         goto err;
 200     }
 201
 202     if (ret->ameth->set_priv_key == NULL) {
 203         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY,
 204                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 205         goto err;
 206     }
 207
 208     if (!ret->ameth->set_priv_key(ret, priv, len)) {
 209         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, EVP_R_KEY_SETUP_FAILED);
 210         goto err;
 211     }
 212
 213     return ret;
 214
 215  err:
 216     EVP_PKEY_free(ret);
 217     return NULL;
 218 }
 219
 220 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
 221                                       const unsigned char *pub,
 222                                       size_t len)
 223 {
 224     EVP_PKEY *ret = EVP_PKEY_new();
 225
 226     if (ret == NULL
 227             || !pkey_set_type(ret, e, type, NULL, -1)) {
 228         /* EVPerr already called */
 229         goto err;
 230     }
 231
 232     if (ret->ameth->set_pub_key == NULL) {
 233         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY,
 234                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 235         goto err;
 236     }
 237
 238     if (!ret->ameth->set_pub_key(ret, pub, len)) {
 239         EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, EVP_R_KEY_SETUP_FAILED);
 240         goto err;
 241     }
 242
 243     return ret;
 244
 245  err:
 246     EVP_PKEY_free(ret);
 247     return NULL;
 248 }
 249
 250 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
 251                                  size_t *len)
 252 {
 253      if (pkey->ameth->get_priv_key == NULL) {
 254         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY,
 255                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 256         return 0;
 257     }
 258
 259     if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
 260         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, EVP_R_GET_RAW_KEY_FAILED);
 261         return 0;
 262     }
 263
 264     return 1;
 265 }
 266
 267 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
 268                                 size_t *len)
 269 {
 270      if (pkey->ameth->get_pub_key == NULL) {
 271         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY,
 272                EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 273         return 0;
 274     }
 275
 276     if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
 277         EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, EVP_R_GET_RAW_KEY_FAILED);
 278         return 0;
 279     }
 280
 281     return 1;
 282 }
 283
 284 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
 285                                 size_t len, const EVP_CIPHER *cipher)
 286 {
 287 # ifndef OPENSSL_NO_CMAC
 288 #  ifndef OPENSSL_NO_ENGINE
 289     const char *engine_id = e != NULL ? ENGINE_get_id(e) : NULL;
 290 #  endif
 291     const char *cipher_name = EVP_CIPHER_name(cipher);
 292     const OSSL_PROVIDER *prov = EVP_CIPHER_provider(cipher);
 293     OPENSSL_CTX *libctx =
 294         prov == NULL ? NULL : ossl_provider_library_context(prov);
 295     EVP_PKEY *ret = EVP_PKEY_new();
 296     EVP_MAC *cmac = EVP_MAC_fetch(libctx, OSSL_MAC_NAME_CMAC, NULL);
 297     EVP_MAC_CTX *cmctx = cmac != NULL ? EVP_MAC_CTX_new(cmac) : NULL;
 298     OSSL_PARAM params[4];
 299     size_t paramsn = 0;
 300
 301     if (ret == NULL
 302             || cmctx == NULL
 303             || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) {
 304         /* EVPerr already called */
 305         goto err;
 306     }
 307
 308 #  ifndef OPENSSL_NO_ENGINE
 309     if (engine_id != NULL)
 310         params[paramsn++] =
 311             OSSL_PARAM_construct_utf8_string("engine", (char *)engine_id, 0);
 312 #  endif
 313
 314     params[paramsn++] =
 315         OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_CIPHER,
 316                                          (char *)cipher_name, 0);
 317     params[paramsn++] =
 318         OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_KEY,
 319                                           (char *)priv, len);
 320     params[paramsn] = OSSL_PARAM_construct_end();
 321
 322     if (!EVP_MAC_CTX_set_params(cmctx, params)) {
 323         EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED);
 324         goto err;
 325     }
 326
 327     ret->pkey.ptr = cmctx;
 328     return ret;
 329
 330  err:
 331     EVP_PKEY_free(ret);
 332     EVP_MAC_CTX_free(cmctx);
 333     EVP_MAC_free(cmac);
 334     return NULL;
 335 # else
 336     EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY,
 337            EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 338     return NULL;
 339 # endif
 340 }
 341
 342 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
 343 {
 344     return pkey_set_type(pkey, NULL, type, NULL, -1);
 345 }
 346
 347 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
 348 {
 349     return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
 350 }
 351
 352 int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
 353 {
 354     if (pkey->type == type) {
 355         return 1; /* it already is that type */
 356     }
 357
 358     /*
 359      * The application is requesting to alias this to a different pkey type,
 360      * but not one that resolves to the base type.
 361      */
 362     if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) {
 363         EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
 364         return 0;
 365     }
 366
 367     pkey->type = type;
 368     return 1;
 369 }
 370
 371 # ifndef OPENSSL_NO_ENGINE
 372 int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
 373 {
 374     if (e != NULL) {
 375         if (!ENGINE_init(e)) {
 376             EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
 377             return 0;
 378         }
 379         if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
 380             ENGINE_finish(e);
 381             EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
 382             return 0;
 383         }
 384     }
 385     ENGINE_finish(pkey->pmeth_engine);
 386     pkey->pmeth_engine = e;
 387     return 1;
 388 }
 389
 390 ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
 391 {
 392     return pkey->engine;
 393 }
 394 # endif
 395 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
 396 {
 397     if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
 398         return 0;
 399     pkey->pkey.ptr = key;
 400     return (key != NULL);
 401 }
 402
 403 void *EVP_PKEY_get0(const EVP_PKEY *pkey)
 404 {
 405     return pkey->pkey.ptr;
 406 }
 407
 408 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
 409 {
 410     ASN1_OCTET_STRING *os = NULL;
 411     if (pkey->type != EVP_PKEY_HMAC) {
 412         EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
 413         return NULL;
 414     }
 415     os = EVP_PKEY_get0(pkey);
 416     *len = os->length;
 417     return os->data;
 418 }
 419
 420 # ifndef OPENSSL_NO_POLY1305
 421 const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
 422 {
 423     ASN1_OCTET_STRING *os = NULL;
 424     if (pkey->type != EVP_PKEY_POLY1305) {
 425         EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
 426         return NULL;
 427     }
 428     os = EVP_PKEY_get0(pkey);
 429     *len = os->length;
 430     return os->data;
 431 }
 432 # endif
 433
 434 # ifndef OPENSSL_NO_SIPHASH
 435 const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
 436 {
 437     ASN1_OCTET_STRING *os = NULL;
 438
 439     if (pkey->type != EVP_PKEY_SIPHASH) {
 440         EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
 441         return NULL;
 442     }
 443     os = EVP_PKEY_get0(pkey);
 444     *len = os->length;
 445     return os->data;
 446 }
 447 # endif
 448
 449 # ifndef OPENSSL_NO_RSA
 450 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
 451 {
 452     int ret = EVP_PKEY_assign_RSA(pkey, key);
 453     if (ret)
 454         RSA_up_ref(key);
 455     return ret;
 456 }
 457
 458 RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey)
 459 {
 460     if (pkey->type != EVP_PKEY_RSA && pkey->type != EVP_PKEY_RSA_PSS) {
 461         EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
 462         return NULL;
 463     }
 464     return pkey->pkey.rsa;
 465 }
 466
 467 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
 468 {
 469     RSA *ret = EVP_PKEY_get0_RSA(pkey);
 470     if (ret != NULL)
 471         RSA_up_ref(ret);
 472     return ret;
 473 }
 474 # endif
 475
 476 # ifndef OPENSSL_NO_DSA
 477 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
 478 {
 479     int ret = EVP_PKEY_assign_DSA(pkey, key);
 480     if (ret)
 481         DSA_up_ref(key);
 482     return ret;
 483 }
 484
 485 DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
 486 {
 487     if (pkey->type != EVP_PKEY_DSA) {
 488         EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
 489         return NULL;
 490     }
 491     return pkey->pkey.dsa;
 492 }
 493
 494 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
 495 {
 496     DSA *ret = EVP_PKEY_get0_DSA(pkey);
 497     if (ret != NULL)
 498         DSA_up_ref(ret);
 499     return ret;
 500 }
 501 # endif
 502
 503 # ifndef OPENSSL_NO_EC
 504
 505 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
 506 {
 507     int ret = EVP_PKEY_assign_EC_KEY(pkey, key);
 508     if (ret)
 509         EC_KEY_up_ref(key);
 510     return ret;
 511 }
 512
 513 EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey)
 514 {
 515     if (pkey->type != EVP_PKEY_EC) {
 516         EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
 517         return NULL;
 518     }
 519     return pkey->pkey.ec;
 520 }
 521
 522 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
 523 {
 524     EC_KEY *ret = EVP_PKEY_get0_EC_KEY(pkey);
 525     if (ret != NULL)
 526         EC_KEY_up_ref(ret);
 527     return ret;
 528 }
 529 # endif
 530
 531 # ifndef OPENSSL_NO_DH
 532
 533 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
 534 {
 535     int type = DH_get0_q(key) == NULL ? EVP_PKEY_DH : EVP_PKEY_DHX;
 536     int ret = EVP_PKEY_assign(pkey, type, key);
 537
 538     if (ret)
 539         DH_up_ref(key);
 540     return ret;
 541 }
 542
 543 DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
 544 {
 545     if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
 546         EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
 547         return NULL;
 548     }
 549     return pkey->pkey.dh;
 550 }
 551
 552 DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
 553 {
 554     DH *ret = EVP_PKEY_get0_DH(pkey);
 555     if (ret != NULL)
 556         DH_up_ref(ret);
 557     return ret;
 558 }
 559 # endif
 560
 561 int EVP_PKEY_type(int type)
 562 {
 563     int ret;
 564     const EVP_PKEY_ASN1_METHOD *ameth;
 565     ENGINE *e;
 566     ameth = EVP_PKEY_asn1_find(&e, type);
 567     if (ameth)
 568         ret = ameth->pkey_id;
 569     else
 570         ret = NID_undef;
 571 # ifndef OPENSSL_NO_ENGINE
 572     ENGINE_finish(e);
 573 # endif
 574     return ret;
 575 }
 576
 577 int EVP_PKEY_id(const EVP_PKEY *pkey)
 578 {
 579     return pkey->type;
 580 }
 581
 582 int EVP_PKEY_base_id(const EVP_PKEY *pkey)
 583 {
 584     return EVP_PKEY_type(pkey->type);
 585 }
 586
 587
 588 static int print_reset_indent(BIO **out, int pop_f_prefix, long saved_indent)
 589 {
 590     BIO_set_indent(*out, saved_indent);
 591     if (pop_f_prefix) {
 592         BIO *next = BIO_pop(*out);
 593
 594         BIO_free(*out);
 595         *out = next;
 596     }
 597     return 1;
 598 }
 599
 600 static int print_set_indent(BIO **out, int *pop_f_prefix, long *saved_indent,
 601                             long indent)
 602 {
 603     *pop_f_prefix = 0;
 604     *saved_indent = 0;
 605     if (indent > 0) {
 606         long i = BIO_get_indent(*out);
 607
 608         *saved_indent =  (i < 0 ? 0 : i);
 609         if (BIO_set_indent(*out, indent) <= 0) {
 610             if ((*out = BIO_push(BIO_new(BIO_f_prefix()), *out)) == NULL)
 611                 return 0;
 612             *pop_f_prefix = 1;
 613         }
 614         if (BIO_set_indent(*out, indent) <= 0) {
 615             print_reset_indent(out, *pop_f_prefix, *saved_indent);
 616             return 0;
 617         }
 618     }
 619     return 1;
 620 }
 621
 622 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
 623                      const char *kstr)
 624 {
 625     return BIO_indent(out, indent, 128)
 626         && BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
 627                       kstr, OBJ_nid2ln(pkey->type)) > 0;
 628 }
 629
 630 static int print_pkey(const EVP_PKEY *pkey, BIO *out, int indent,
 631                       const char *propquery /* For provided serialization */,
 632                       int (*legacy_print)(BIO *out, const EVP_PKEY *pkey,
 633                                           int indent, ASN1_PCTX *pctx),
 634                       ASN1_PCTX *legacy_pctx /* For legacy print */)
 635 {
 636     int pop_f_prefix;
 637     long saved_indent;
 638     OSSL_SERIALIZER_CTX *ctx = NULL;
 639     int ret = -2;                /* default to unsupported */
 640
 641     if (!print_set_indent(&out, &pop_f_prefix, &saved_indent, indent))
 642         return 0;
 643
 644     ctx = OSSL_SERIALIZER_CTX_new_by_EVP_PKEY(pkey, propquery);
 645     if (OSSL_SERIALIZER_CTX_get_serializer(ctx) != NULL)
 646         ret = OSSL_SERIALIZER_to_bio(ctx, out);
 647     OSSL_SERIALIZER_CTX_free(ctx);
 648
 649     if (ret != -2)
 650         goto end;
 651
 652     /* legacy fallback */
 653     if (legacy_print != NULL)
 654         ret = legacy_print(out, pkey, 0, legacy_pctx);
 655     else
 656         ret = unsup_alg(out, pkey, 0, "Public Key");
 657
 658  end:
 659     print_reset_indent(&out, pop_f_prefix, saved_indent);
 660     return ret;
 661 }
 662
 663 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
 664                           int indent, ASN1_PCTX *pctx)
 665 {
 666     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_PUBKEY_TO_TEXT_PQ,
 667                       (pkey->ameth != NULL ? pkey->ameth->pub_print : NULL),
 668                       pctx);
 669 }
 670
 671 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
 672                            int indent, ASN1_PCTX *pctx)
 673 {
 674     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_PrivateKey_TO_TEXT_PQ,
 675                       (pkey->ameth != NULL ? pkey->ameth->priv_print : NULL),
 676                       pctx);
 677 }
 678
 679 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
 680                           int indent, ASN1_PCTX *pctx)
 681 {
 682     return print_pkey(pkey, out, indent, OSSL_SERIALIZER_Parameters_TO_TEXT_PQ,
 683                       (pkey->ameth != NULL ? pkey->ameth->param_print : NULL),
 684                       pctx);
 685 }
 686
 687 static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
 688 {
 689     if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
 690         return -2;
 691     return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
 692 }
 693
 694 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
 695 {
 696     return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
 697 }
 698
 699 int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid)
 700 {
 701     int rv, default_nid;
 702
 703     rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SUPPORTS_MD_NID, nid, NULL);
 704     if (rv == -2) {
 705         /*
 706          * If there is a mandatory default digest and this isn't it, then
 707          * the answer is 'no'.
 708          */
 709         rv = EVP_PKEY_get_default_digest_nid(pkey, &default_nid);
 710         if (rv == 2)
 711             return (nid == default_nid);
 712         /* zero is an error from EVP_PKEY_get_default_digest_nid() */
 713         if (rv == 0)
 714             return -1;
 715     }
 716     return rv;
 717 }
 718
 719 int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
 720                                const unsigned char *pt, size_t ptlen)
 721 {
 722     if (ptlen > INT_MAX)
 723         return 0;
 724     if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
 725                            (void *)pt) <= 0)
 726         return 0;
 727     return 1;
 728 }
 729
 730 size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
 731 {
 732     int rv;
 733     rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);
 734     if (rv <= 0)
 735         return 0;
 736     return rv;
 737 }
 738
 739 #endif /* FIPS_MODE */
 740
 741 /*- All methods below can also be used in FIPS_MODE */
 742
 743 EVP_PKEY *EVP_PKEY_new(void)
 744 {
 745     EVP_PKEY *ret = OPENSSL_zalloc(sizeof(*ret));
 746
 747     if (ret == NULL) {
 748         EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
 749         return NULL;
 750     }
 751     ret->type = EVP_PKEY_NONE;
 752     ret->save_type = EVP_PKEY_NONE;
 753     ret->references = 1;
 754     ret->save_parameters = 1;
 755     ret->lock = CRYPTO_THREAD_lock_new();
 756     if (ret->lock == NULL) {
 757         EVPerr(EVP_F_EVP_PKEY_NEW, ERR_R_MALLOC_FAILURE);
 758         OPENSSL_free(ret);
 759         return NULL;
 760     }
 761     return ret;
 762 }
 763
 764 int EVP_PKEY_up_ref(EVP_PKEY *pkey)
 765 {
 766     int i;
 767
 768     if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
 769         return 0;
 770
 771     REF_PRINT_COUNT("EVP_PKEY", pkey);
 772     REF_ASSERT_ISNT(i < 2);
 773     return ((i > 1) ? 1 : 0);
 774 }
 775
 776 static void evp_pkey_free_it(EVP_PKEY *x)
 777 {
 778     /* internal function; x is never NULL */
 779
 780     evp_keymgmt_clear_pkey_cache(x);
 781
 782     if (x->ameth && x->ameth->pkey_free) {
 783         x->ameth->pkey_free(x);
 784         x->pkey.ptr = NULL;
 785     }
 786 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 787     ENGINE_finish(x->engine);
 788     x->engine = NULL;
 789     ENGINE_finish(x->pmeth_engine);
 790     x->pmeth_engine = NULL;
 791 #endif
 792 }
 793
 794 void EVP_PKEY_free(EVP_PKEY *x)
 795 {
 796     int i;
 797
 798     if (x == NULL)
 799         return;
 800
 801     CRYPTO_DOWN_REF(&x->references, &i, x->lock);
 802     REF_PRINT_COUNT("EVP_PKEY", x);
 803     if (i > 0)
 804         return;
 805     REF_ASSERT_ISNT(i < 0);
 806     evp_pkey_free_it(x);
 807     CRYPTO_THREAD_lock_free(x->lock);
 808 #ifndef FIPS_MODE
 809     sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
 810 #endif
 811     OPENSSL_free(x);
 812 }
 813
 814 /* TODO (3.0) : Needs to call getparams fo non legacy case */
 815 int EVP_PKEY_size(const EVP_PKEY *pkey)
 816 {
 817     if (pkey && pkey->ameth && pkey->ameth->pkey_size)
 818         return pkey->ameth->pkey_size(pkey);
 819     return 0;
 820 }
 821