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_SIGNATURE_OP(ctx)
 574             && ctx->op.sig.sigprovctx != NULL
 575             && ctx->op.sig.signature != NULL
 576             && ctx->op.sig.signature->get_ctx_params != NULL)
 577         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 578                                                      params);
 579     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 580             && ctx->op.ciph.ciphprovctx != NULL
 581             && ctx->op.ciph.cipher != NULL
 582             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 583         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 584                                                    params);
 585     return 0;
 586 }
 587
 588 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 589 {
 590     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 591             && ctx->op.sig.signature != NULL
 592             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 593         return ctx->op.sig.signature->gettable_ctx_params();
 594
 595     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 596             && ctx->op.ciph.cipher != NULL
 597             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 598         return ctx->op.ciph.cipher->gettable_ctx_params();
 599
 600     return NULL;
 601 }
 602
 603 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 604 {
 605     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 606             && ctx->op.kex.exchange != NULL
 607             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 608         return ctx->op.kex.exchange->settable_ctx_params();
 609     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 610             && ctx->op.sig.signature != NULL
 611             && ctx->op.sig.signature->settable_ctx_params != NULL)
 612         return ctx->op.sig.signature->settable_ctx_params();
 613     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 614             && ctx->op.ciph.cipher != NULL
 615             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 616         return ctx->op.ciph.cipher->settable_ctx_params();
 617
 618     return NULL;
 619 }
 620
 621 # ifndef OPENSSL_NO_DH
 622 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 623 {
 624     OSSL_PARAM dh_pad_params[2];
 625     unsigned int upad = pad;
 626
 627     /* We use EVP_PKEY_CTX_ctrl return values */
 628     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 629         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 630         return -2;
 631     }
 632
 633     /* TODO(3.0): Remove this eventually when no more legacy */
 634     if (ctx->op.kex.exchprovctx == NULL)
 635         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 636                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 637
 638     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 639     dh_pad_params[1] = OSSL_PARAM_construct_end();
 640
 641     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 642 }
 643 # endif
 644
 645 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 646 {
 647     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 648     /* 80 should be big enough */
 649     char name[80] = "";
 650     const EVP_MD *tmp;
 651
 652     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 653         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 654         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 655         return -2;
 656     }
 657
 658     /* TODO(3.0): Remove this eventually when no more legacy */
 659     if (ctx->op.sig.sigprovctx == NULL)
 660         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 661                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 662
 663     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 664                                             name,
 665                                             sizeof(name));
 666     *p++ = OSSL_PARAM_construct_end();
 667
 668     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 669         return 0;
 670
 671     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 672     if (tmp == NULL)
 673         return 0;
 674
 675     *md = tmp;
 676
 677     return 1;
 678 }
 679
 680 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 681 {
 682     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 683     size_t mdsize;
 684     const char *name;
 685
 686     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 687         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 688         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 689         return -2;
 690     }
 691
 692     /* TODO(3.0): Remove this eventually when no more legacy */
 693     if (ctx->op.sig.sigprovctx == NULL)
 694         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 695                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 696
 697     if (md == NULL) {
 698         name = "";
 699         mdsize = 0;
 700     } else {
 701         mdsize = EVP_MD_size(md);
 702         name = EVP_MD_name(md);
 703     }
 704
 705     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 706                                             /*
 707                                              * Cast away the const. This is read
 708                                              * only so should be safe
 709                                              */
 710                                             (char *)name,
 711                                             strlen(name) + 1);
 712     *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
 713                                        &mdsize);
 714     *p++ = OSSL_PARAM_construct_end();
 715
 716     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 717 }
 718
 719 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 720                                 int cmd, int p1, void *p2)
 721 {
 722     switch (cmd) {
 723 # ifndef OPENSSL_NO_DH
 724     case EVP_PKEY_CTRL_DH_PAD:
 725         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 726 # endif
 727     case EVP_PKEY_CTRL_MD:
 728         return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 729     case EVP_PKEY_CTRL_GET_MD:
 730         return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 731     case EVP_PKEY_CTRL_RSA_PADDING:
 732         return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 733     case EVP_PKEY_CTRL_GET_RSA_PADDING:
 734         return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 735     case EVP_PKEY_CTRL_RSA_OAEP_MD:
 736         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 737     case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 738         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 739     case EVP_PKEY_CTRL_RSA_MGF1_MD:
 740         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 741     case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 742         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 743     case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 744         return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 745     case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 746         return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 747     case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 748     case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 749 # ifndef OPENSSL_NO_CMS
 750     case EVP_PKEY_CTRL_CMS_DECRYPT:
 751     case EVP_PKEY_CTRL_CMS_ENCRYPT:
 752 # endif
 753         if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 754             return 1;
 755         ERR_raise(ERR_LIB_EVP,
 756                   EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 757         return -2;
 758     }
 759     return 0;
 760 }
 761
 762 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 763                       int cmd, int p1, void *p2)
 764 {
 765     int ret;
 766
 767     if (ctx == NULL) {
 768         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 769         return -2;
 770     }
 771
 772     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 773             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 774                 && ctx->op.sig.sigprovctx != NULL)
 775             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 776                 && ctx->op.ciph.ciphprovctx != NULL))
 777         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 778
 779     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 780         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 781         return -2;
 782     }
 783     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 784         return -1;
 785
 786     /* Skip the operation checks since this is called in a very early stage */
 787     if (ctx->pmeth->digest_custom != NULL)
 788         goto doit;
 789
 790     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 791         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 792         return -1;
 793     }
 794
 795     if ((optype != -1) && !(ctx->operation & optype)) {
 796         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 797         return -1;
 798     }
 799
 800  doit:
 801     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 802
 803     if (ret == -2)
 804         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 805
 806     return ret;
 807 }
 808
 809 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 810                              int cmd, uint64_t value)
 811 {
 812     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 813 }
 814
 815 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 816                                     const char *value)
 817 {
 818     if (strcmp(name, "rsa_padding_mode") == 0)
 819         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
 820     else if (strcmp(name, "rsa_mgf1_md") == 0)
 821         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
 822     else if (strcmp(name, "rsa_oaep_md") == 0)
 823         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
 824     else if (strcmp(name, "rsa_oaep_label") == 0)
 825         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
 826 # ifndef OPENSSL_NO_DH
 827     else if (strcmp(name, "dh_pad") == 0)
 828         name = OSSL_EXCHANGE_PARAM_PAD;
 829 # endif
 830
 831     {
 832         /*
 833          * TODO(3.0) reduce the code above to only translate known legacy
 834          * string to the corresponding core name (see core_names.h), but
 835          * otherwise leave it to this code block to do the actual work.
 836          */
 837         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 838         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
 839         int rv = 0;
 840
 841         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
 842                                            strlen(value)))
 843             return 0;
 844         if (EVP_PKEY_CTX_set_params(ctx, params))
 845             rv = 1;
 846         OPENSSL_free(params[0].data);
 847         return rv;
 848     }
 849 }
 850
 851 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 852                           const char *name, const char *value)
 853 {
 854     if (ctx == NULL) {
 855         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 856         return -2;
 857     }
 858
 859     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 860             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 861                 && ctx->op.sig.sigprovctx != NULL)
 862             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 863                 && ctx->op.ciph.ciphprovctx != NULL))
 864         return legacy_ctrl_str_to_param(ctx, name, value);
 865
 866     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 867         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 868         return -2;
 869     }
 870     if (strcmp(name, "digest") == 0)
 871         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 872                                value);
 873     return ctx->pmeth->ctrl_str(ctx, name, value);
 874 }
 875
 876 /* Utility functions to send a string of hex string to a ctrl */
 877
 878 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 879 {
 880     size_t len;
 881
 882     len = strlen(str);
 883     if (len > INT_MAX)
 884         return -1;
 885     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 886 }
 887
 888 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 889 {
 890     unsigned char *bin;
 891     long binlen;
 892     int rv = -1;
 893
 894     bin = OPENSSL_hexstr2buf(hex, &binlen);
 895     if (bin == NULL)
 896         return 0;
 897     if (binlen <= INT_MAX)
 898         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 899     OPENSSL_free(bin);
 900     return rv;
 901 }
 902
 903 /* Pass a message digest to a ctrl */
 904 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 905 {
 906     const EVP_MD *m;
 907
 908     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 909         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 910         return 0;
 911     }
 912     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 913 }
 914
 915 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 916 {
 917     return ctx->operation;
 918 }
 919
 920 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 921 {
 922     ctx->keygen_info = dat;
 923     ctx->keygen_info_count = datlen;
 924 }
 925
 926 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 927 {
 928     ctx->data = data;
 929 }
 930
 931 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 932 {
 933     return ctx->data;
 934 }
 935
 936 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 937 {
 938     return ctx->pkey;
 939 }
 940
 941 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 942 {
 943     return ctx->peerkey;
 944 }
 945
 946 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 947 {
 948     ctx->app_data = data;
 949 }
 950
 951 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 952 {
 953     return ctx->app_data;
 954 }
 955
 956 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 957                             int (*init) (EVP_PKEY_CTX *ctx))
 958 {
 959     pmeth->init = init;
 960 }
 961
 962 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 963                             int (*copy) (EVP_PKEY_CTX *dst,
 964                                          const EVP_PKEY_CTX *src))
 965 {
 966     pmeth->copy = copy;
 967 }
 968
 969 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 970                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 971 {
 972     pmeth->cleanup = cleanup;
 973 }
 974
 975 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 976                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 977                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 978                                                  EVP_PKEY *pkey))
 979 {
 980     pmeth->paramgen_init = paramgen_init;
 981     pmeth->paramgen = paramgen;
 982 }
 983
 984 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 985                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 986                               int (*keygen) (EVP_PKEY_CTX *ctx,
 987                                              EVP_PKEY *pkey))
 988 {
 989     pmeth->keygen_init = keygen_init;
 990     pmeth->keygen = keygen;
 991 }
 992
 993 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 994                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 995                             int (*sign) (EVP_PKEY_CTX *ctx,
 996                                          unsigned char *sig, size_t *siglen,
 997                                          const unsigned char *tbs,
 998                                          size_t tbslen))
 999 {
1000     pmeth->sign_init = sign_init;
1001     pmeth->sign = sign;
1002 }
1003
1004 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1005                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1006                               int (*verify) (EVP_PKEY_CTX *ctx,
1007                                              const unsigned char *sig,
1008                                              size_t siglen,
1009                                              const unsigned char *tbs,
1010                                              size_t tbslen))
1011 {
1012     pmeth->verify_init = verify_init;
1013     pmeth->verify = verify;
1014 }
1015
1016 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1017                                       int (*verify_recover_init) (EVP_PKEY_CTX
1018                                                                   *ctx),
1019                                       int (*verify_recover) (EVP_PKEY_CTX
1020                                                              *ctx,
1021                                                              unsigned char
1022                                                              *sig,
1023                                                              size_t *siglen,
1024                                                              const unsigned
1025                                                              char *tbs,
1026                                                              size_t tbslen))
1027 {
1028     pmeth->verify_recover_init = verify_recover_init;
1029     pmeth->verify_recover = verify_recover;
1030 }
1031
1032 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1033                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1034                                                     EVP_MD_CTX *mctx),
1035                                int (*signctx) (EVP_PKEY_CTX *ctx,
1036                                                unsigned char *sig,
1037                                                size_t *siglen,
1038                                                EVP_MD_CTX *mctx))
1039 {
1040     pmeth->signctx_init = signctx_init;
1041     pmeth->signctx = signctx;
1042 }
1043
1044 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1045                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1046                                                         EVP_MD_CTX *mctx),
1047                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1048                                                    const unsigned char *sig,
1049                                                    int siglen,
1050                                                    EVP_MD_CTX *mctx))
1051 {
1052     pmeth->verifyctx_init = verifyctx_init;
1053     pmeth->verifyctx = verifyctx;
1054 }
1055
1056 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1057                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1058                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1059                                                  unsigned char *out,
1060                                                  size_t *outlen,
1061                                                  const unsigned char *in,
1062                                                  size_t inlen))
1063 {
1064     pmeth->encrypt_init = encrypt_init;
1065     pmeth->encrypt = encryptfn;
1066 }
1067
1068 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1069                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1070                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1071                                                unsigned char *out,
1072                                                size_t *outlen,
1073                                                const unsigned char *in,
1074                                                size_t inlen))
1075 {
1076     pmeth->decrypt_init = decrypt_init;
1077     pmeth->decrypt = decrypt;
1078 }
1079
1080 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1081                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1082                               int (*derive) (EVP_PKEY_CTX *ctx,
1083                                              unsigned char *key,
1084                                              size_t *keylen))
1085 {
1086     pmeth->derive_init = derive_init;
1087     pmeth->derive = derive;
1088 }
1089
1090 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1091                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1092                                          void *p2),
1093                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1094                                              const char *type,
1095                                              const char *value))
1096 {
1097     pmeth->ctrl = ctrl;
1098     pmeth->ctrl_str = ctrl_str;
1099 }
1100
1101 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1102     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1103                        const unsigned char *tbs, size_t tbslen))
1104 {
1105     pmeth->digestsign = digestsign;
1106 }
1107
1108 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1109     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1110                          size_t siglen, const unsigned char *tbs,
1111                          size_t tbslen))
1112 {
1113     pmeth->digestverify = digestverify;
1114 }
1115
1116 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1117                              int (*check) (EVP_PKEY *pkey))
1118 {
1119     pmeth->check = check;
1120 }
1121
1122 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1123                                     int (*check) (EVP_PKEY *pkey))
1124 {
1125     pmeth->public_check = check;
1126 }
1127
1128 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1129                                    int (*check) (EVP_PKEY *pkey))
1130 {
1131     pmeth->param_check = check;
1132 }
1133
1134 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1135                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1136                                                            EVP_MD_CTX *mctx))
1137 {
1138     pmeth->digest_custom = digest_custom;
1139 }
1140
1141 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1142                             int (**pinit) (EVP_PKEY_CTX *ctx))
1143 {
1144     *pinit = pmeth->init;
1145 }
1146
1147 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1148                             int (**pcopy) (EVP_PKEY_CTX *dst,
1149                                            const EVP_PKEY_CTX *src))
1150 {
1151     *pcopy = pmeth->copy;
1152 }
1153
1154 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1155                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1156 {
1157     *pcleanup = pmeth->cleanup;
1158 }
1159
1160 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1161                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1162                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1163                                                    EVP_PKEY *pkey))
1164 {
1165     if (pparamgen_init)
1166         *pparamgen_init = pmeth->paramgen_init;
1167     if (pparamgen)
1168         *pparamgen = pmeth->paramgen;
1169 }
1170
1171 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1172                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1173                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1174                                                EVP_PKEY *pkey))
1175 {
1176     if (pkeygen_init)
1177         *pkeygen_init = pmeth->keygen_init;
1178     if (pkeygen)
1179         *pkeygen = pmeth->keygen;
1180 }
1181
1182 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1183                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1184                             int (**psign) (EVP_PKEY_CTX *ctx,
1185                                            unsigned char *sig, size_t *siglen,
1186                                            const unsigned char *tbs,
1187                                            size_t tbslen))
1188 {
1189     if (psign_init)
1190         *psign_init = pmeth->sign_init;
1191     if (psign)
1192         *psign = pmeth->sign;
1193 }
1194
1195 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1196                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1197                               int (**pverify) (EVP_PKEY_CTX *ctx,
1198                                                const unsigned char *sig,
1199                                                size_t siglen,
1200                                                const unsigned char *tbs,
1201                                                size_t tbslen))
1202 {
1203     if (pverify_init)
1204         *pverify_init = pmeth->verify_init;
1205     if (pverify)
1206         *pverify = pmeth->verify;
1207 }
1208
1209 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1210                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1211                                                                     *ctx),
1212                                       int (**pverify_recover) (EVP_PKEY_CTX
1213                                                                *ctx,
1214                                                                unsigned char
1215                                                                *sig,
1216                                                                size_t *siglen,
1217                                                                const unsigned
1218                                                                char *tbs,
1219                                                                size_t tbslen))
1220 {
1221     if (pverify_recover_init)
1222         *pverify_recover_init = pmeth->verify_recover_init;
1223     if (pverify_recover)
1224         *pverify_recover = pmeth->verify_recover;
1225 }
1226
1227 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1228                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1229                                                       EVP_MD_CTX *mctx),
1230                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1231                                                  unsigned char *sig,
1232                                                  size_t *siglen,
1233                                                  EVP_MD_CTX *mctx))
1234 {
1235     if (psignctx_init)
1236         *psignctx_init = pmeth->signctx_init;
1237     if (psignctx)
1238         *psignctx = pmeth->signctx;
1239 }
1240
1241 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1242                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1243                                                           EVP_MD_CTX *mctx),
1244                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1245                                                      const unsigned char *sig,
1246                                                      int siglen,
1247                                                      EVP_MD_CTX *mctx))
1248 {
1249     if (pverifyctx_init)
1250         *pverifyctx_init = pmeth->verifyctx_init;
1251     if (pverifyctx)
1252         *pverifyctx = pmeth->verifyctx;
1253 }
1254
1255 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1256                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1257                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1258                                                    unsigned char *out,
1259                                                    size_t *outlen,
1260                                                    const unsigned char *in,
1261                                                    size_t inlen))
1262 {
1263     if (pencrypt_init)
1264         *pencrypt_init = pmeth->encrypt_init;
1265     if (pencryptfn)
1266         *pencryptfn = pmeth->encrypt;
1267 }
1268
1269 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1270                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1271                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1272                                                  unsigned char *out,
1273                                                  size_t *outlen,
1274                                                  const unsigned char *in,
1275                                                  size_t inlen))
1276 {
1277     if (pdecrypt_init)
1278         *pdecrypt_init = pmeth->decrypt_init;
1279     if (pdecrypt)
1280         *pdecrypt = pmeth->decrypt;
1281 }
1282
1283 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1284                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1285                               int (**pderive) (EVP_PKEY_CTX *ctx,
1286                                                unsigned char *key,
1287                                                size_t *keylen))
1288 {
1289     if (pderive_init)
1290         *pderive_init = pmeth->derive_init;
1291     if (pderive)
1292         *pderive = pmeth->derive;
1293 }
1294
1295 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1296                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1297                                            void *p2),
1298                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1299                                                const char *type,
1300                                                const char *value))
1301 {
1302     if (pctrl)
1303         *pctrl = pmeth->ctrl;
1304     if (pctrl_str)
1305         *pctrl_str = pmeth->ctrl_str;
1306 }
1307
1308 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1309     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1310                         const unsigned char *tbs, size_t tbslen))
1311 {
1312     if (digestsign)
1313         *digestsign = pmeth->digestsign;
1314 }
1315
1316 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1317     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1318                           size_t siglen, const unsigned char *tbs,
1319                           size_t tbslen))
1320 {
1321     if (digestverify)
1322         *digestverify = pmeth->digestverify;
1323 }
1324
1325 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1326                              int (**pcheck) (EVP_PKEY *pkey))
1327 {
1328     if (pcheck != NULL)
1329         *pcheck = pmeth->check;
1330 }
1331
1332 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1333                                     int (**pcheck) (EVP_PKEY *pkey))
1334 {
1335     if (pcheck != NULL)
1336         *pcheck = pmeth->public_check;
1337 }
1338
1339 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1340                                    int (**pcheck) (EVP_PKEY *pkey))
1341 {
1342     if (pcheck != NULL)
1343         *pcheck = pmeth->param_check;
1344 }
1345
1346 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1347                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1348                                                              EVP_MD_CTX *mctx))
1349 {
1350     if (pdigest_custom != NULL)
1351         *pdigest_custom = pmeth->digest_custom;
1352 }
1353
1354 #endif /* FIPS_MODE */