crypto/evp/pmeth_lib.c

   1
   2 /*
   3  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   4  *
   5  * Licensed under the Apache License 2.0 (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <openssl/engine.h>
  14 #include <openssl/evp.h>
  15 #include <openssl/x509v3.h>
  16 #include <openssl/core_names.h>
  17 #include <openssl/dh.h>
  18 #include <openssl/rsa.h>
  19 #include "internal/cryptlib.h"
  20 #include "crypto/asn1.h"
  21 #include "crypto/evp.h"
  22 #include "internal/numbers.h"
  23 #include "internal/provider.h"
  24 #include "evp_local.h"
  25
  26 #ifndef FIPS_MODE
  27
  28 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  29 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  30
  31 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  32
  33 /* This array needs to be in order of NIDs */
  34 static pmeth_fn standard_methods[] = {
  35 # ifndef OPENSSL_NO_RSA
  36     rsa_pkey_method,
  37 # endif
  38 # ifndef OPENSSL_NO_DH
  39     dh_pkey_method,
  40 # endif
  41 # ifndef OPENSSL_NO_DSA
  42     dsa_pkey_method,
  43 # endif
  44 # ifndef OPENSSL_NO_EC
  45     ec_pkey_method,
  46 # endif
  47     hmac_pkey_method,
  48 # ifndef OPENSSL_NO_CMAC
  49     cmac_pkey_method,
  50 # endif
  51 # ifndef OPENSSL_NO_RSA
  52     rsa_pss_pkey_method,
  53 # endif
  54 # ifndef OPENSSL_NO_DH
  55     dhx_pkey_method,
  56 # endif
  57 # ifndef OPENSSL_NO_SCRYPT
  58     scrypt_pkey_method,
  59 # endif
  60     tls1_prf_pkey_method,
  61 # ifndef OPENSSL_NO_EC
  62     ecx25519_pkey_method,
  63     ecx448_pkey_method,
  64 # endif
  65     hkdf_pkey_method,
  66 # ifndef OPENSSL_NO_POLY1305
  67     poly1305_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_SIPHASH
  70     siphash_pkey_method,
  71 # endif
  72 # ifndef OPENSSL_NO_EC
  73     ed25519_pkey_method,
  74     ed448_pkey_method,
  75 # endif
  76 # ifndef OPENSSL_NO_SM2
  77     sm2_pkey_method,
  78 # endif
  79 };
  80
  81 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  82
  83 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  84 {
  85     return ((*a)->pkey_id - ((**b)())->pkey_id);
  86 }
  87
  88 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  89
  90 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  91                      const EVP_PKEY_METHOD *const *b)
  92 {
  93     return ((*a)->pkey_id - (*b)->pkey_id);
  94 }
  95
  96 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  97 {
  98     pmeth_fn *ret;
  99     EVP_PKEY_METHOD tmp;
 100     const EVP_PKEY_METHOD *t = &tmp;
 101
 102     tmp.pkey_id = type;
 103     if (app_pkey_methods) {
 104         int idx;
 105         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 106         if (idx >= 0)
 107             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 108     }
 109     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 110                                  sizeof(standard_methods) /
 111                                  sizeof(pmeth_fn));
 112     if (ret == NULL || *ret == NULL)
 113         return NULL;
 114     return (**ret)();
 115 }
 116
 117 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 118 {
 119     EVP_PKEY_METHOD *pmeth;
 120
 121     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 122     if (pmeth == NULL) {
 123         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 124         return NULL;
 125     }
 126
 127     pmeth->pkey_id = id;
 128     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 129     return pmeth;
 130 }
 131 #endif /* FIPS_MODE */
 132
 133 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 134                                  EVP_PKEY *pkey, ENGINE *e,
 135                                  const char *name, const char *propquery,
 136                                  int id)
 137
 138 {
 139     EVP_PKEY_CTX *ret;
 140     const EVP_PKEY_METHOD *pmeth = NULL;
 141
 142     /*
 143      * When using providers, the context is bound to the algo implementation
 144      * later.
 145      */
 146     if (pkey == NULL && e == NULL && id == -1)
 147         goto common;
 148
 149     /*
 150      * If the key doesn't contain anything legacy, then it must be provided,
 151      * so we extract the necessary information and use that.
 152      */
 153     if (pkey != NULL && pkey->ameth == NULL) {
 154         /* If we have an engine, something went wrong somewhere... */
 155         if (!ossl_assert(e == NULL))
 156             return NULL;
 157         name = evp_first_name(pkey->pkeys[0].keymgmt->prov,
 158                               pkey->pkeys[0].keymgmt->name_id);
 159         /*
 160          * TODO: I wonder if the EVP_PKEY should have the name and propquery
 161          * that were used when building it....  /RL
 162          */
 163         goto common;
 164     }
 165 #ifndef FIPS_MODE
 166     /* TODO(3.0) Legacy code should be removed when all is provider based */
 167     /* BEGIN legacy */
 168     if (id == -1) {
 169         if (pkey == NULL)
 170             return NULL;
 171         id = pkey->type;
 172     }
 173
 174     /*
 175      * Here, we extract what information we can for the purpose of
 176      * supporting usage with implementations from providers, to make
 177      * for a smooth transition from legacy stuff to provider based stuff.
 178      *
 179      * If an engine is given, this is entirely legacy, and we should not
 180      * pretend anything else, so we only set the name when no engine is
 181      * given.  If both are already given, someone made a mistake, and
 182      * since that can only happen internally, it's safe to make an
 183      * assertion.
 184      */
 185     if (!ossl_assert(e == NULL || name == NULL))
 186         return NULL;
 187     if (e == NULL)
 188         name = OBJ_nid2sn(id);
 189
 190 # ifndef OPENSSL_NO_ENGINE
 191     if (e == NULL && pkey != NULL)
 192         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 193     /* Try to find an ENGINE which implements this method */
 194     if (e) {
 195         if (!ENGINE_init(e)) {
 196             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 197             return NULL;
 198         }
 199     } else {
 200         e = ENGINE_get_pkey_meth_engine(id);
 201     }
 202
 203     /*
 204      * If an ENGINE handled this method look it up. Otherwise use internal
 205      * tables.
 206      */
 207     if (e)
 208         pmeth = ENGINE_get_pkey_meth(e, id);
 209     else
 210 # endif
 211         pmeth = EVP_PKEY_meth_find(id);
 212
 213     if (pmeth == NULL) {
 214 # ifndef OPENSSL_NO_ENGINE
 215         ENGINE_finish(e);
 216 # endif
 217         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 218         return NULL;
 219     }
 220     /* END legacy */
 221 #endif /* FIPS_MODE */
 222  common:
 223     ret = OPENSSL_zalloc(sizeof(*ret));
 224     if (ret == NULL) {
 225 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 226         ENGINE_finish(e);
 227 #endif
 228         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 229         return NULL;
 230     }
 231     ret->libctx = libctx;
 232     ret->keytype = name;
 233     ret->propquery = propquery;
 234     ret->engine = e;
 235     ret->pmeth = pmeth;
 236     ret->operation = EVP_PKEY_OP_UNDEFINED;
 237     ret->pkey = pkey;
 238     if (pkey != NULL)
 239         EVP_PKEY_up_ref(pkey);
 240
 241     if (pmeth != NULL && pmeth->init != NULL) {
 242         if (pmeth->init(ret) <= 0) {
 243             ret->pmeth = NULL;
 244             EVP_PKEY_CTX_free(ret);
 245             return NULL;
 246         }
 247     }
 248
 249     return ret;
 250 }
 251
 252 /*- All methods below can also be used in FIPS_MODE */
 253
 254 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 255                                          const char *name,
 256                                          const char *propquery)
 257 {
 258     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 259 }
 260
 261 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 262                                          const char *propquery)
 263 {
 264     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 265 }
 266
 267 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 268 {
 269     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 270         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 271             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 272         EVP_SIGNATURE_free(ctx->op.sig.signature);
 273         ctx->op.sig.sigprovctx = NULL;
 274         ctx->op.sig.signature = NULL;
 275     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 276         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 277             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 278         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 279         ctx->op.kex.exchprovctx = NULL;
 280         ctx->op.kex.exchange = NULL;
 281     }
 282 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 283 #ifndef FIPS_MODE
 284     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 285         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 286             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 287         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 288         ctx->op.ciph.ciphprovctx = NULL;
 289         ctx->op.ciph.cipher = NULL;
 290     }
 291 #endif
 292 }
 293
 294 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 295 {
 296     if (ctx == NULL)
 297         return;
 298     if (ctx->pmeth && ctx->pmeth->cleanup)
 299         ctx->pmeth->cleanup(ctx);
 300
 301     evp_pkey_ctx_free_old_ops(ctx);
 302     EVP_KEYMGMT_free(ctx->keymgmt);
 303
 304     EVP_PKEY_free(ctx->pkey);
 305     EVP_PKEY_free(ctx->peerkey);
 306 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 307     ENGINE_finish(ctx->engine);
 308 #endif
 309     OPENSSL_free(ctx);
 310 }
 311
 312 #ifndef FIPS_MODE
 313
 314 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 315                              const EVP_PKEY_METHOD *meth)
 316 {
 317     if (ppkey_id)
 318         *ppkey_id = meth->pkey_id;
 319     if (pflags)
 320         *pflags = meth->flags;
 321 }
 322
 323 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 324 {
 325
 326     dst->init = src->init;
 327     dst->copy = src->copy;
 328     dst->cleanup = src->cleanup;
 329
 330     dst->paramgen_init = src->paramgen_init;
 331     dst->paramgen = src->paramgen;
 332
 333     dst->keygen_init = src->keygen_init;
 334     dst->keygen = src->keygen;
 335
 336     dst->sign_init = src->sign_init;
 337     dst->sign = src->sign;
 338
 339     dst->verify_init = src->verify_init;
 340     dst->verify = src->verify;
 341
 342     dst->verify_recover_init = src->verify_recover_init;
 343     dst->verify_recover = src->verify_recover;
 344
 345     dst->signctx_init = src->signctx_init;
 346     dst->signctx = src->signctx;
 347
 348     dst->verifyctx_init = src->verifyctx_init;
 349     dst->verifyctx = src->verifyctx;
 350
 351     dst->encrypt_init = src->encrypt_init;
 352     dst->encrypt = src->encrypt;
 353
 354     dst->decrypt_init = src->decrypt_init;
 355     dst->decrypt = src->decrypt;
 356
 357     dst->derive_init = src->derive_init;
 358     dst->derive = src->derive;
 359
 360     dst->ctrl = src->ctrl;
 361     dst->ctrl_str = src->ctrl_str;
 362
 363     dst->check = src->check;
 364 }
 365
 366 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 367 {
 368     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 369         OPENSSL_free(pmeth);
 370 }
 371
 372 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 373 {
 374     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 375 }
 376
 377 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 378 {
 379     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 380 }
 381
 382 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 383 {
 384     EVP_PKEY_CTX *rctx;
 385
 386     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 387             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 388                  && pctx->op.kex.exchprovctx == NULL)
 389                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 390                     && pctx->op.sig.sigprovctx == NULL)))
 391         return NULL;
 392 # ifndef OPENSSL_NO_ENGINE
 393     /* Make sure it's safe to copy a pkey context using an ENGINE */
 394     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 395         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 396         return 0;
 397     }
 398 # endif
 399     rctx = OPENSSL_zalloc(sizeof(*rctx));
 400     if (rctx == NULL) {
 401         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 402         return NULL;
 403     }
 404
 405     if (pctx->pkey != NULL)
 406         EVP_PKEY_up_ref(pctx->pkey);
 407     rctx->pkey = pctx->pkey;
 408     rctx->operation = pctx->operation;
 409     rctx->libctx = pctx->libctx;
 410     rctx->keytype = pctx->keytype;
 411     rctx->propquery = pctx->propquery;
 412
 413     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 414         if (pctx->op.kex.exchange != NULL) {
 415             rctx->op.kex.exchange = pctx->op.kex.exchange;
 416             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 417                 OPENSSL_free(rctx);
 418                 return NULL;
 419             }
 420         }
 421         if (pctx->op.kex.exchprovctx != NULL) {
 422             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 423                 return NULL;
 424             rctx->op.kex.exchprovctx
 425                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 426             if (rctx->op.kex.exchprovctx == NULL) {
 427                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 428                 OPENSSL_free(rctx);
 429                 return NULL;
 430             }
 431             return rctx;
 432         }
 433     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 434         if (pctx->op.sig.signature != NULL) {
 435             rctx->op.sig.signature = pctx->op.sig.signature;
 436             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 437                 OPENSSL_free(rctx);
 438                 return NULL;
 439             }
 440         }
 441         if (pctx->op.sig.sigprovctx != NULL) {
 442             if (!ossl_assert(pctx->op.sig.signature != NULL))
 443                 return NULL;
 444             rctx->op.sig.sigprovctx
 445                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 446             if (rctx->op.sig.sigprovctx == NULL) {
 447                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 448                 OPENSSL_free(rctx);
 449                 return NULL;
 450             }
 451             return rctx;
 452         }
 453     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 454         if (pctx->op.ciph.cipher != NULL) {
 455             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 456             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 457                 OPENSSL_free(rctx);
 458                 return NULL;
 459             }
 460         }
 461         if (pctx->op.ciph.ciphprovctx != NULL) {
 462             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 463                 return NULL;
 464             rctx->op.ciph.ciphprovctx
 465                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 466             if (rctx->op.ciph.ciphprovctx == NULL) {
 467                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 468                 OPENSSL_free(rctx);
 469                 return NULL;
 470             }
 471             return rctx;
 472         }
 473     }
 474
 475     rctx->pmeth = pctx->pmeth;
 476 # ifndef OPENSSL_NO_ENGINE
 477     rctx->engine = pctx->engine;
 478 # endif
 479
 480     if (pctx->peerkey)
 481         EVP_PKEY_up_ref(pctx->peerkey);
 482     rctx->peerkey = pctx->peerkey;
 483
 484     if (pctx->pmeth->copy(rctx, pctx) > 0)
 485         return rctx;
 486
 487     rctx->pmeth = NULL;
 488     EVP_PKEY_CTX_free(rctx);
 489     return NULL;
 490
 491 }
 492
 493 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 494 {
 495     if (app_pkey_methods == NULL) {
 496         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 497         if (app_pkey_methods == NULL){
 498             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 499             return 0;
 500         }
 501     }
 502     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 503         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 504         return 0;
 505     }
 506     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 507     return 1;
 508 }
 509
 510 void evp_app_cleanup_int(void)
 511 {
 512     if (app_pkey_methods != NULL)
 513         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 514 }
 515
 516 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 517 {
 518     const EVP_PKEY_METHOD *ret;
 519
 520     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 521
 522     return ret == NULL ? 0 : 1;
 523 }
 524
 525 size_t EVP_PKEY_meth_get_count(void)
 526 {
 527     size_t rv = OSSL_NELEM(standard_methods);
 528
 529     if (app_pkey_methods)
 530         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 531     return rv;
 532 }
 533
 534 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 535 {
 536     if (idx < OSSL_NELEM(standard_methods))
 537         return (standard_methods[idx])();
 538     if (app_pkey_methods == NULL)
 539         return NULL;
 540     idx -= OSSL_NELEM(standard_methods);
 541     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 542         return NULL;
 543     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 544 }
 545 #endif
 546
 547 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 548 {
 549     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 550             && ctx->op.kex.exchprovctx != NULL
 551             && ctx->op.kex.exchange != NULL
 552             && ctx->op.kex.exchange->set_ctx_params != NULL)
 553         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 554                                                     params);
 555     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 556             && ctx->op.sig.sigprovctx != NULL
 557             && ctx->op.sig.signature != NULL
 558             && ctx->op.sig.signature->set_ctx_params != NULL)
 559         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 560                                                      params);
 561     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 562             && ctx->op.ciph.ciphprovctx != NULL
 563             && ctx->op.ciph.cipher != NULL
 564             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 565         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 566                                                      params);
 567     return 0;
 568 }
 569
 570 #ifndef FIPS_MODE
 571 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 572 {
 573     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 574             && ctx->op.kex.exchprovctx != NULL
 575             && ctx->op.kex.exchange != NULL
 576             && ctx->op.kex.exchange->get_ctx_params != NULL)
 577         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 578                                                     params);
 579     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 580             && ctx->op.sig.sigprovctx != NULL
 581             && ctx->op.sig.signature != NULL
 582             && ctx->op.sig.signature->get_ctx_params != NULL)
 583         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 584                                                      params);
 585     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 586             && ctx->op.ciph.ciphprovctx != NULL
 587             && ctx->op.ciph.cipher != NULL
 588             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 589         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 590                                                    params);
 591     return 0;
 592 }
 593
 594 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 595 {
 596     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 597             && ctx->op.kex.exchange != NULL
 598             && ctx->op.kex.exchange->gettable_ctx_params != NULL)
 599         return ctx->op.kex.exchange->gettable_ctx_params();
 600     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 601             && ctx->op.sig.signature != NULL
 602             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 603         return ctx->op.sig.signature->gettable_ctx_params();
 604
 605     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 606             && ctx->op.ciph.cipher != NULL
 607             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 608         return ctx->op.ciph.cipher->gettable_ctx_params();
 609
 610     return NULL;
 611 }
 612
 613 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 614 {
 615     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 616             && ctx->op.kex.exchange != NULL
 617             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 618         return ctx->op.kex.exchange->settable_ctx_params();
 619     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 620             && ctx->op.sig.signature != NULL
 621             && ctx->op.sig.signature->settable_ctx_params != NULL)
 622         return ctx->op.sig.signature->settable_ctx_params();
 623     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 624             && ctx->op.ciph.cipher != NULL
 625             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 626         return ctx->op.ciph.cipher->settable_ctx_params();
 627
 628     return NULL;
 629 }
 630
 631 /*
 632  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 633  *
 634  * Return 1 on success, 0 or negative for errors.
 635  *
 636  * In particular they return -2 if any of the params is not supported.
 637  *
 638  * They are not available in FIPS_MODE as they depend on
 639  *      - EVP_PKEY_CTX_{get,set}_params()
 640  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 641  *
 642  */
 643 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 644 {
 645     const OSSL_PARAM *p;
 646
 647     if (ctx == NULL || params == NULL)
 648         return 0;
 649
 650     for (p = params; p->key != NULL; p++) {
 651         /* Check the ctx actually understands this parameter */
 652         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 653                                     p->key) == NULL )
 654             return -2;
 655     }
 656
 657     return EVP_PKEY_CTX_set_params(ctx, params);
 658 }
 659
 660 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 661 {
 662     const OSSL_PARAM *p;
 663
 664     if (ctx == NULL || params == NULL)
 665         return 0;
 666
 667     for (p = params; p->key != NULL; p++ ) {
 668         /* Check the ctx actually understands this parameter */
 669         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 670                                     p->key) == NULL )
 671             return -2;
 672     }
 673
 674     return EVP_PKEY_CTX_get_params(ctx, params);
 675 }
 676
 677 # ifndef OPENSSL_NO_DH
 678 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 679 {
 680     OSSL_PARAM dh_pad_params[2];
 681     unsigned int upad = pad;
 682
 683     /* We use EVP_PKEY_CTX_ctrl return values */
 684     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 685         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 686         return -2;
 687     }
 688
 689     /* TODO(3.0): Remove this eventually when no more legacy */
 690     if (ctx->op.kex.exchprovctx == NULL)
 691         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 692                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 693
 694     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 695     dh_pad_params[1] = OSSL_PARAM_construct_end();
 696
 697     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 698 }
 699 # endif
 700
 701 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 702 {
 703     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 704     /* 80 should be big enough */
 705     char name[80] = "";
 706     const EVP_MD *tmp;
 707
 708     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 709         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 710         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 711         return -2;
 712     }
 713
 714     /* TODO(3.0): Remove this eventually when no more legacy */
 715     if (ctx->op.sig.sigprovctx == NULL)
 716         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 717                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 718
 719     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 720                                             name,
 721                                             sizeof(name));
 722     *p++ = OSSL_PARAM_construct_end();
 723
 724     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 725         return 0;
 726
 727     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 728     if (tmp == NULL)
 729         return 0;
 730
 731     *md = tmp;
 732
 733     return 1;
 734 }
 735
 736 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 737 {
 738     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 739     const char *name;
 740
 741     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 742         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 743         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 744         return -2;
 745     }
 746
 747     /* TODO(3.0): Remove this eventually when no more legacy */
 748     if (ctx->op.sig.sigprovctx == NULL)
 749         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 750                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 751
 752     if (md == NULL) {
 753         name = "";
 754     } else {
 755         name = EVP_MD_name(md);
 756     }
 757
 758     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 759                                             /*
 760                                              * Cast away the const. This is read
 761                                              * only so should be safe
 762                                              */
 763                                             (char *)name, 0);
 764     *p++ = OSSL_PARAM_construct_end();
 765
 766     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 767 }
 768
 769 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 770                                 int cmd, int p1, void *p2)
 771 {
 772 # ifndef OPENSSL_NO_DH
 773     if (keytype == EVP_PKEY_DH) {
 774         switch (cmd) {
 775             case EVP_PKEY_CTRL_DH_PAD:
 776                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 777         }
 778     }
 779 # endif
 780 # ifndef OPENSSL_NO_EC
 781     if (keytype == EVP_PKEY_EC) {
 782         switch (cmd) {
 783             case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
 784                 if (p1 == -2) {
 785                     return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
 786                 } else if (p1 < -1 || p1 > 1) {
 787                     /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 788                     return -2;
 789                 } else {
 790                     return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
 791                 }
 792             case EVP_PKEY_CTRL_EC_KDF_TYPE:
 793                 if (p1 == -2) {
 794                     return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
 795                 } else {
 796                     return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
 797                 }
 798             case EVP_PKEY_CTRL_GET_EC_KDF_MD:
 799                 return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
 800             case EVP_PKEY_CTRL_EC_KDF_MD:
 801                 return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
 802             case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
 803                 return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
 804             case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
 805                 return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
 806             case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
 807                 return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
 808             case EVP_PKEY_CTRL_EC_KDF_UKM:
 809                 return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
 810         }
 811     }
 812 # endif
 813     if (keytype == -1) {
 814         switch (cmd) {
 815             case EVP_PKEY_CTRL_MD:
 816                 return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 817             case EVP_PKEY_CTRL_GET_MD:
 818                 return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 819             case EVP_PKEY_CTRL_RSA_PADDING:
 820                 return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 821             case EVP_PKEY_CTRL_GET_RSA_PADDING:
 822                 return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 823             case EVP_PKEY_CTRL_RSA_OAEP_MD:
 824                 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 825             case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 826                 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 827             case EVP_PKEY_CTRL_RSA_MGF1_MD:
 828                 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 829             case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 830                 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 831             case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 832                 return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 833             case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 834                 return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 835             case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 836             case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 837 # ifndef OPENSSL_NO_CMS
 838             case EVP_PKEY_CTRL_CMS_DECRYPT:
 839             case EVP_PKEY_CTRL_CMS_ENCRYPT:
 840 # endif
 841                 if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 842                     return 1;
 843                 ERR_raise(ERR_LIB_EVP,
 844                           EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 845                 return -2;
 846         }
 847     }
 848     return 0;
 849 }
 850
 851 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 852                       int cmd, int p1, void *p2)
 853 {
 854     int ret;
 855
 856     if (ctx == NULL) {
 857         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 858         return -2;
 859     }
 860
 861     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 862             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 863                 && ctx->op.sig.sigprovctx != NULL)
 864             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 865                 && ctx->op.ciph.ciphprovctx != NULL))
 866         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 867
 868     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 869         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 870         return -2;
 871     }
 872     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 873         return -1;
 874
 875     /* Skip the operation checks since this is called in a very early stage */
 876     if (ctx->pmeth->digest_custom != NULL)
 877         goto doit;
 878
 879     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 880         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 881         return -1;
 882     }
 883
 884     if ((optype != -1) && !(ctx->operation & optype)) {
 885         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 886         return -1;
 887     }
 888
 889  doit:
 890     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 891
 892     if (ret == -2)
 893         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 894
 895     return ret;
 896 }
 897
 898 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 899                              int cmd, uint64_t value)
 900 {
 901     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 902 }
 903
 904 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 905                                     const char *value)
 906 {
 907     if (strcmp(name, "rsa_padding_mode") == 0)
 908         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
 909     else if (strcmp(name, "rsa_mgf1_md") == 0)
 910         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
 911     else if (strcmp(name, "rsa_oaep_md") == 0)
 912         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
 913     else if (strcmp(name, "rsa_oaep_label") == 0)
 914         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
 915 # ifndef OPENSSL_NO_DH
 916     else if (strcmp(name, "dh_pad") == 0)
 917         name = OSSL_EXCHANGE_PARAM_PAD;
 918 # endif
 919 # ifndef OPENSSL_NO_EC
 920     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
 921         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
 922     else if (strcmp(name, "ecdh_kdf_md") == 0)
 923         name = OSSL_EXCHANGE_PARAM_KDF_TYPE;
 924 # endif
 925
 926     {
 927         /*
 928          * TODO(3.0) reduce the code above to only translate known legacy
 929          * string to the corresponding core name (see core_names.h), but
 930          * otherwise leave it to this code block to do the actual work.
 931          */
 932         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 933         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
 934         int rv = 0;
 935
 936         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
 937                                            strlen(value)))
 938             return 0;
 939         if (EVP_PKEY_CTX_set_params(ctx, params))
 940             rv = 1;
 941         OPENSSL_free(params[0].data);
 942         return rv;
 943     }
 944 }
 945
 946 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 947                           const char *name, const char *value)
 948 {
 949     if (ctx == NULL) {
 950         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 951         return -2;
 952     }
 953
 954     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 955             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 956                 && ctx->op.sig.sigprovctx != NULL)
 957             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 958                 && ctx->op.ciph.ciphprovctx != NULL))
 959         return legacy_ctrl_str_to_param(ctx, name, value);
 960
 961     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 962         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 963         return -2;
 964     }
 965     if (strcmp(name, "digest") == 0)
 966         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 967                                value);
 968     return ctx->pmeth->ctrl_str(ctx, name, value);
 969 }
 970
 971 /* Utility functions to send a string of hex string to a ctrl */
 972
 973 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 974 {
 975     size_t len;
 976
 977     len = strlen(str);
 978     if (len > INT_MAX)
 979         return -1;
 980     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 981 }
 982
 983 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 984 {
 985     unsigned char *bin;
 986     long binlen;
 987     int rv = -1;
 988
 989     bin = OPENSSL_hexstr2buf(hex, &binlen);
 990     if (bin == NULL)
 991         return 0;
 992     if (binlen <= INT_MAX)
 993         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 994     OPENSSL_free(bin);
 995     return rv;
 996 }
 997
 998 /* Pass a message digest to a ctrl */
 999 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1000 {
1001     const EVP_MD *m;
1002
1003     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1004         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1005         return 0;
1006     }
1007     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1008 }
1009
1010 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1011 {
1012     return ctx->operation;
1013 }
1014
1015 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1016 {
1017     ctx->keygen_info = dat;
1018     ctx->keygen_info_count = datlen;
1019 }
1020
1021 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1022 {
1023     ctx->data = data;
1024 }
1025
1026 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1027 {
1028     return ctx->data;
1029 }
1030
1031 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1032 {
1033     return ctx->pkey;
1034 }
1035
1036 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1037 {
1038     return ctx->peerkey;
1039 }
1040
1041 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1042 {
1043     ctx->app_data = data;
1044 }
1045
1046 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1047 {
1048     return ctx->app_data;
1049 }
1050
1051 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1052                             int (*init) (EVP_PKEY_CTX *ctx))
1053 {
1054     pmeth->init = init;
1055 }
1056
1057 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1058                             int (*copy) (EVP_PKEY_CTX *dst,
1059                                          const EVP_PKEY_CTX *src))
1060 {
1061     pmeth->copy = copy;
1062 }
1063
1064 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1065                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1066 {
1067     pmeth->cleanup = cleanup;
1068 }
1069
1070 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1071                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1072                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1073                                                  EVP_PKEY *pkey))
1074 {
1075     pmeth->paramgen_init = paramgen_init;
1076     pmeth->paramgen = paramgen;
1077 }
1078
1079 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1080                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1081                               int (*keygen) (EVP_PKEY_CTX *ctx,
1082                                              EVP_PKEY *pkey))
1083 {
1084     pmeth->keygen_init = keygen_init;
1085     pmeth->keygen = keygen;
1086 }
1087
1088 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1089                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1090                             int (*sign) (EVP_PKEY_CTX *ctx,
1091                                          unsigned char *sig, size_t *siglen,
1092                                          const unsigned char *tbs,
1093                                          size_t tbslen))
1094 {
1095     pmeth->sign_init = sign_init;
1096     pmeth->sign = sign;
1097 }
1098
1099 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1100                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1101                               int (*verify) (EVP_PKEY_CTX *ctx,
1102                                              const unsigned char *sig,
1103                                              size_t siglen,
1104                                              const unsigned char *tbs,
1105                                              size_t tbslen))
1106 {
1107     pmeth->verify_init = verify_init;
1108     pmeth->verify = verify;
1109 }
1110
1111 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1112                                       int (*verify_recover_init) (EVP_PKEY_CTX
1113                                                                   *ctx),
1114                                       int (*verify_recover) (EVP_PKEY_CTX
1115                                                              *ctx,
1116                                                              unsigned char
1117                                                              *sig,
1118                                                              size_t *siglen,
1119                                                              const unsigned
1120                                                              char *tbs,
1121                                                              size_t tbslen))
1122 {
1123     pmeth->verify_recover_init = verify_recover_init;
1124     pmeth->verify_recover = verify_recover;
1125 }
1126
1127 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1128                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1129                                                     EVP_MD_CTX *mctx),
1130                                int (*signctx) (EVP_PKEY_CTX *ctx,
1131                                                unsigned char *sig,
1132                                                size_t *siglen,
1133                                                EVP_MD_CTX *mctx))
1134 {
1135     pmeth->signctx_init = signctx_init;
1136     pmeth->signctx = signctx;
1137 }
1138
1139 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1140                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1141                                                         EVP_MD_CTX *mctx),
1142                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1143                                                    const unsigned char *sig,
1144                                                    int siglen,
1145                                                    EVP_MD_CTX *mctx))
1146 {
1147     pmeth->verifyctx_init = verifyctx_init;
1148     pmeth->verifyctx = verifyctx;
1149 }
1150
1151 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1152                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1153                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1154                                                  unsigned char *out,
1155                                                  size_t *outlen,
1156                                                  const unsigned char *in,
1157                                                  size_t inlen))
1158 {
1159     pmeth->encrypt_init = encrypt_init;
1160     pmeth->encrypt = encryptfn;
1161 }
1162
1163 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1164                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1165                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1166                                                unsigned char *out,
1167                                                size_t *outlen,
1168                                                const unsigned char *in,
1169                                                size_t inlen))
1170 {
1171     pmeth->decrypt_init = decrypt_init;
1172     pmeth->decrypt = decrypt;
1173 }
1174
1175 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1176                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1177                               int (*derive) (EVP_PKEY_CTX *ctx,
1178                                              unsigned char *key,
1179                                              size_t *keylen))
1180 {
1181     pmeth->derive_init = derive_init;
1182     pmeth->derive = derive;
1183 }
1184
1185 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1186                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1187                                          void *p2),
1188                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1189                                              const char *type,
1190                                              const char *value))
1191 {
1192     pmeth->ctrl = ctrl;
1193     pmeth->ctrl_str = ctrl_str;
1194 }
1195
1196 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1197     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1198                        const unsigned char *tbs, size_t tbslen))
1199 {
1200     pmeth->digestsign = digestsign;
1201 }
1202
1203 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1204     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1205                          size_t siglen, const unsigned char *tbs,
1206                          size_t tbslen))
1207 {
1208     pmeth->digestverify = digestverify;
1209 }
1210
1211 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1212                              int (*check) (EVP_PKEY *pkey))
1213 {
1214     pmeth->check = check;
1215 }
1216
1217 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1218                                     int (*check) (EVP_PKEY *pkey))
1219 {
1220     pmeth->public_check = check;
1221 }
1222
1223 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1224                                    int (*check) (EVP_PKEY *pkey))
1225 {
1226     pmeth->param_check = check;
1227 }
1228
1229 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1230                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1231                                                            EVP_MD_CTX *mctx))
1232 {
1233     pmeth->digest_custom = digest_custom;
1234 }
1235
1236 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1237                             int (**pinit) (EVP_PKEY_CTX *ctx))
1238 {
1239     *pinit = pmeth->init;
1240 }
1241
1242 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1243                             int (**pcopy) (EVP_PKEY_CTX *dst,
1244                                            const EVP_PKEY_CTX *src))
1245 {
1246     *pcopy = pmeth->copy;
1247 }
1248
1249 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1250                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1251 {
1252     *pcleanup = pmeth->cleanup;
1253 }
1254
1255 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1256                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1257                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1258                                                    EVP_PKEY *pkey))
1259 {
1260     if (pparamgen_init)
1261         *pparamgen_init = pmeth->paramgen_init;
1262     if (pparamgen)
1263         *pparamgen = pmeth->paramgen;
1264 }
1265
1266 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1267                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1268                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1269                                                EVP_PKEY *pkey))
1270 {
1271     if (pkeygen_init)
1272         *pkeygen_init = pmeth->keygen_init;
1273     if (pkeygen)
1274         *pkeygen = pmeth->keygen;
1275 }
1276
1277 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1278                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1279                             int (**psign) (EVP_PKEY_CTX *ctx,
1280                                            unsigned char *sig, size_t *siglen,
1281                                            const unsigned char *tbs,
1282                                            size_t tbslen))
1283 {
1284     if (psign_init)
1285         *psign_init = pmeth->sign_init;
1286     if (psign)
1287         *psign = pmeth->sign;
1288 }
1289
1290 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1291                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1292                               int (**pverify) (EVP_PKEY_CTX *ctx,
1293                                                const unsigned char *sig,
1294                                                size_t siglen,
1295                                                const unsigned char *tbs,
1296                                                size_t tbslen))
1297 {
1298     if (pverify_init)
1299         *pverify_init = pmeth->verify_init;
1300     if (pverify)
1301         *pverify = pmeth->verify;
1302 }
1303
1304 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1305                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1306                                                                     *ctx),
1307                                       int (**pverify_recover) (EVP_PKEY_CTX
1308                                                                *ctx,
1309                                                                unsigned char
1310                                                                *sig,
1311                                                                size_t *siglen,
1312                                                                const unsigned
1313                                                                char *tbs,
1314                                                                size_t tbslen))
1315 {
1316     if (pverify_recover_init)
1317         *pverify_recover_init = pmeth->verify_recover_init;
1318     if (pverify_recover)
1319         *pverify_recover = pmeth->verify_recover;
1320 }
1321
1322 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1323                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1324                                                       EVP_MD_CTX *mctx),
1325                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1326                                                  unsigned char *sig,
1327                                                  size_t *siglen,
1328                                                  EVP_MD_CTX *mctx))
1329 {
1330     if (psignctx_init)
1331         *psignctx_init = pmeth->signctx_init;
1332     if (psignctx)
1333         *psignctx = pmeth->signctx;
1334 }
1335
1336 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1337                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1338                                                           EVP_MD_CTX *mctx),
1339                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1340                                                      const unsigned char *sig,
1341                                                      int siglen,
1342                                                      EVP_MD_CTX *mctx))
1343 {
1344     if (pverifyctx_init)
1345         *pverifyctx_init = pmeth->verifyctx_init;
1346     if (pverifyctx)
1347         *pverifyctx = pmeth->verifyctx;
1348 }
1349
1350 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1351                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1352                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1353                                                    unsigned char *out,
1354                                                    size_t *outlen,
1355                                                    const unsigned char *in,
1356                                                    size_t inlen))
1357 {
1358     if (pencrypt_init)
1359         *pencrypt_init = pmeth->encrypt_init;
1360     if (pencryptfn)
1361         *pencryptfn = pmeth->encrypt;
1362 }
1363
1364 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1365                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1366                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1367                                                  unsigned char *out,
1368                                                  size_t *outlen,
1369                                                  const unsigned char *in,
1370                                                  size_t inlen))
1371 {
1372     if (pdecrypt_init)
1373         *pdecrypt_init = pmeth->decrypt_init;
1374     if (pdecrypt)
1375         *pdecrypt = pmeth->decrypt;
1376 }
1377
1378 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1379                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1380                               int (**pderive) (EVP_PKEY_CTX *ctx,
1381                                                unsigned char *key,
1382                                                size_t *keylen))
1383 {
1384     if (pderive_init)
1385         *pderive_init = pmeth->derive_init;
1386     if (pderive)
1387         *pderive = pmeth->derive;
1388 }
1389
1390 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1391                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1392                                            void *p2),
1393                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1394                                                const char *type,
1395                                                const char *value))
1396 {
1397     if (pctrl)
1398         *pctrl = pmeth->ctrl;
1399     if (pctrl_str)
1400         *pctrl_str = pmeth->ctrl_str;
1401 }
1402
1403 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1404     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1405                         const unsigned char *tbs, size_t tbslen))
1406 {
1407     if (digestsign)
1408         *digestsign = pmeth->digestsign;
1409 }
1410
1411 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1412     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1413                           size_t siglen, const unsigned char *tbs,
1414                           size_t tbslen))
1415 {
1416     if (digestverify)
1417         *digestverify = pmeth->digestverify;
1418 }
1419
1420 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1421                              int (**pcheck) (EVP_PKEY *pkey))
1422 {
1423     if (pcheck != NULL)
1424         *pcheck = pmeth->check;
1425 }
1426
1427 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1428                                     int (**pcheck) (EVP_PKEY *pkey))
1429 {
1430     if (pcheck != NULL)
1431         *pcheck = pmeth->public_check;
1432 }
1433
1434 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1435                                    int (**pcheck) (EVP_PKEY *pkey))
1436 {
1437     if (pcheck != NULL)
1438         *pcheck = pmeth->param_check;
1439 }
1440
1441 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1442                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1443                                                              EVP_MD_CTX *mctx))
1444 {
1445     if (pdigest_custom != NULL)
1446         *pdigest_custom = pmeth->digest_custom;
1447 }
1448
1449 #endif /* FIPS_MODE */