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 # ifndef OPENSSL_NO_DH
 819     if (strcmp(name, "dh_pad") == 0) {
 820         int pad;
 821
 822         pad = atoi(value);
 823         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 824     }
 825 # endif
 826     if (strcmp(name, "digest") == 0) {
 827         int ret;
 828         EVP_MD *md;
 829
 830         if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
 831             return 0;
 832         md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
 833                           value, NULL);
 834         if (md == NULL)
 835             return 0;
 836         ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
 837         EVP_MD_free(md);
 838         return ret;
 839     }
 840
 841     if (strcmp(name, "rsa_padding_mode") == 0) {
 842         int pm;
 843
 844         if (strcmp(value, "pkcs1") == 0) {
 845             pm = RSA_PKCS1_PADDING;
 846         } else if (strcmp(value, "sslv23") == 0) {
 847             pm = RSA_SSLV23_PADDING;
 848         } else if (strcmp(value, "none") == 0) {
 849             pm = RSA_NO_PADDING;
 850         } else if (strcmp(value, "oeap") == 0) {
 851             pm = RSA_PKCS1_OAEP_PADDING;
 852         } else if (strcmp(value, "oaep") == 0) {
 853             pm = RSA_PKCS1_OAEP_PADDING;
 854         } else if (strcmp(value, "x931") == 0) {
 855             pm = RSA_X931_PADDING;
 856         } else if (strcmp(value, "pss") == 0) {
 857             pm = RSA_PKCS1_PSS_PADDING;
 858         } else {
 859             ERR_raise(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE);
 860             return -2;
 861         }
 862         return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
 863     }
 864
 865     if (strcmp(name, "rsa_mgf1_md") == 0)
 866         return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, value, NULL);
 867
 868     if (strcmp(name, "rsa_oaep_md") == 0)
 869         return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, value, NULL);
 870
 871     if (strcmp(name, "rsa_oaep_label") == 0) {
 872         unsigned char *lab;
 873         long lablen;
 874         int ret;
 875
 876         lab = OPENSSL_hexstr2buf(value, &lablen);
 877         if (lab == NULL)
 878             return 0;
 879         ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen);
 880         if (ret <= 0)
 881             OPENSSL_free(lab);
 882         return ret;
 883     }
 884
 885
 886
 887     return 0;
 888 }
 889
 890 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 891                           const char *name, const char *value)
 892 {
 893     if (ctx == NULL) {
 894         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 895         return -2;
 896     }
 897
 898     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 899             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 900                 && ctx->op.sig.sigprovctx != NULL)
 901             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 902                 && ctx->op.ciph.ciphprovctx != NULL))
 903         return legacy_ctrl_str_to_param(ctx, name, value);
 904
 905     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 906         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 907         return -2;
 908     }
 909     if (strcmp(name, "digest") == 0)
 910         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 911                                value);
 912     return ctx->pmeth->ctrl_str(ctx, name, value);
 913 }
 914
 915 /* Utility functions to send a string of hex string to a ctrl */
 916
 917 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 918 {
 919     size_t len;
 920
 921     len = strlen(str);
 922     if (len > INT_MAX)
 923         return -1;
 924     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 925 }
 926
 927 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 928 {
 929     unsigned char *bin;
 930     long binlen;
 931     int rv = -1;
 932
 933     bin = OPENSSL_hexstr2buf(hex, &binlen);
 934     if (bin == NULL)
 935         return 0;
 936     if (binlen <= INT_MAX)
 937         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 938     OPENSSL_free(bin);
 939     return rv;
 940 }
 941
 942 /* Pass a message digest to a ctrl */
 943 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 944 {
 945     const EVP_MD *m;
 946
 947     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 948         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 949         return 0;
 950     }
 951     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 952 }
 953
 954 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 955 {
 956     return ctx->operation;
 957 }
 958
 959 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 960 {
 961     ctx->keygen_info = dat;
 962     ctx->keygen_info_count = datlen;
 963 }
 964
 965 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 966 {
 967     ctx->data = data;
 968 }
 969
 970 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 971 {
 972     return ctx->data;
 973 }
 974
 975 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 976 {
 977     return ctx->pkey;
 978 }
 979
 980 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 981 {
 982     return ctx->peerkey;
 983 }
 984
 985 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 986 {
 987     ctx->app_data = data;
 988 }
 989
 990 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 991 {
 992     return ctx->app_data;
 993 }
 994
 995 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 996                             int (*init) (EVP_PKEY_CTX *ctx))
 997 {
 998     pmeth->init = init;
 999 }
1000
1001 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1002                             int (*copy) (EVP_PKEY_CTX *dst,
1003                                          const EVP_PKEY_CTX *src))
1004 {
1005     pmeth->copy = copy;
1006 }
1007
1008 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1009                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1010 {
1011     pmeth->cleanup = cleanup;
1012 }
1013
1014 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1015                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1016                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1017                                                  EVP_PKEY *pkey))
1018 {
1019     pmeth->paramgen_init = paramgen_init;
1020     pmeth->paramgen = paramgen;
1021 }
1022
1023 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1024                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1025                               int (*keygen) (EVP_PKEY_CTX *ctx,
1026                                              EVP_PKEY *pkey))
1027 {
1028     pmeth->keygen_init = keygen_init;
1029     pmeth->keygen = keygen;
1030 }
1031
1032 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1033                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1034                             int (*sign) (EVP_PKEY_CTX *ctx,
1035                                          unsigned char *sig, size_t *siglen,
1036                                          const unsigned char *tbs,
1037                                          size_t tbslen))
1038 {
1039     pmeth->sign_init = sign_init;
1040     pmeth->sign = sign;
1041 }
1042
1043 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1044                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1045                               int (*verify) (EVP_PKEY_CTX *ctx,
1046                                              const unsigned char *sig,
1047                                              size_t siglen,
1048                                              const unsigned char *tbs,
1049                                              size_t tbslen))
1050 {
1051     pmeth->verify_init = verify_init;
1052     pmeth->verify = verify;
1053 }
1054
1055 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1056                                       int (*verify_recover_init) (EVP_PKEY_CTX
1057                                                                   *ctx),
1058                                       int (*verify_recover) (EVP_PKEY_CTX
1059                                                              *ctx,
1060                                                              unsigned char
1061                                                              *sig,
1062                                                              size_t *siglen,
1063                                                              const unsigned
1064                                                              char *tbs,
1065                                                              size_t tbslen))
1066 {
1067     pmeth->verify_recover_init = verify_recover_init;
1068     pmeth->verify_recover = verify_recover;
1069 }
1070
1071 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1072                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1073                                                     EVP_MD_CTX *mctx),
1074                                int (*signctx) (EVP_PKEY_CTX *ctx,
1075                                                unsigned char *sig,
1076                                                size_t *siglen,
1077                                                EVP_MD_CTX *mctx))
1078 {
1079     pmeth->signctx_init = signctx_init;
1080     pmeth->signctx = signctx;
1081 }
1082
1083 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1084                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1085                                                         EVP_MD_CTX *mctx),
1086                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1087                                                    const unsigned char *sig,
1088                                                    int siglen,
1089                                                    EVP_MD_CTX *mctx))
1090 {
1091     pmeth->verifyctx_init = verifyctx_init;
1092     pmeth->verifyctx = verifyctx;
1093 }
1094
1095 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1096                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1097                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1098                                                  unsigned char *out,
1099                                                  size_t *outlen,
1100                                                  const unsigned char *in,
1101                                                  size_t inlen))
1102 {
1103     pmeth->encrypt_init = encrypt_init;
1104     pmeth->encrypt = encryptfn;
1105 }
1106
1107 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1108                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1109                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1110                                                unsigned char *out,
1111                                                size_t *outlen,
1112                                                const unsigned char *in,
1113                                                size_t inlen))
1114 {
1115     pmeth->decrypt_init = decrypt_init;
1116     pmeth->decrypt = decrypt;
1117 }
1118
1119 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1120                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1121                               int (*derive) (EVP_PKEY_CTX *ctx,
1122                                              unsigned char *key,
1123                                              size_t *keylen))
1124 {
1125     pmeth->derive_init = derive_init;
1126     pmeth->derive = derive;
1127 }
1128
1129 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1130                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1131                                          void *p2),
1132                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1133                                              const char *type,
1134                                              const char *value))
1135 {
1136     pmeth->ctrl = ctrl;
1137     pmeth->ctrl_str = ctrl_str;
1138 }
1139
1140 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1141     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1142                        const unsigned char *tbs, size_t tbslen))
1143 {
1144     pmeth->digestsign = digestsign;
1145 }
1146
1147 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1148     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1149                          size_t siglen, const unsigned char *tbs,
1150                          size_t tbslen))
1151 {
1152     pmeth->digestverify = digestverify;
1153 }
1154
1155 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1156                              int (*check) (EVP_PKEY *pkey))
1157 {
1158     pmeth->check = check;
1159 }
1160
1161 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1162                                     int (*check) (EVP_PKEY *pkey))
1163 {
1164     pmeth->public_check = check;
1165 }
1166
1167 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1168                                    int (*check) (EVP_PKEY *pkey))
1169 {
1170     pmeth->param_check = check;
1171 }
1172
1173 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1174                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1175                                                            EVP_MD_CTX *mctx))
1176 {
1177     pmeth->digest_custom = digest_custom;
1178 }
1179
1180 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1181                             int (**pinit) (EVP_PKEY_CTX *ctx))
1182 {
1183     *pinit = pmeth->init;
1184 }
1185
1186 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1187                             int (**pcopy) (EVP_PKEY_CTX *dst,
1188                                            const EVP_PKEY_CTX *src))
1189 {
1190     *pcopy = pmeth->copy;
1191 }
1192
1193 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1194                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1195 {
1196     *pcleanup = pmeth->cleanup;
1197 }
1198
1199 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1200                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1201                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1202                                                    EVP_PKEY *pkey))
1203 {
1204     if (pparamgen_init)
1205         *pparamgen_init = pmeth->paramgen_init;
1206     if (pparamgen)
1207         *pparamgen = pmeth->paramgen;
1208 }
1209
1210 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1211                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1212                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1213                                                EVP_PKEY *pkey))
1214 {
1215     if (pkeygen_init)
1216         *pkeygen_init = pmeth->keygen_init;
1217     if (pkeygen)
1218         *pkeygen = pmeth->keygen;
1219 }
1220
1221 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1222                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1223                             int (**psign) (EVP_PKEY_CTX *ctx,
1224                                            unsigned char *sig, size_t *siglen,
1225                                            const unsigned char *tbs,
1226                                            size_t tbslen))
1227 {
1228     if (psign_init)
1229         *psign_init = pmeth->sign_init;
1230     if (psign)
1231         *psign = pmeth->sign;
1232 }
1233
1234 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1235                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1236                               int (**pverify) (EVP_PKEY_CTX *ctx,
1237                                                const unsigned char *sig,
1238                                                size_t siglen,
1239                                                const unsigned char *tbs,
1240                                                size_t tbslen))
1241 {
1242     if (pverify_init)
1243         *pverify_init = pmeth->verify_init;
1244     if (pverify)
1245         *pverify = pmeth->verify;
1246 }
1247
1248 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1249                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1250                                                                     *ctx),
1251                                       int (**pverify_recover) (EVP_PKEY_CTX
1252                                                                *ctx,
1253                                                                unsigned char
1254                                                                *sig,
1255                                                                size_t *siglen,
1256                                                                const unsigned
1257                                                                char *tbs,
1258                                                                size_t tbslen))
1259 {
1260     if (pverify_recover_init)
1261         *pverify_recover_init = pmeth->verify_recover_init;
1262     if (pverify_recover)
1263         *pverify_recover = pmeth->verify_recover;
1264 }
1265
1266 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1267                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1268                                                       EVP_MD_CTX *mctx),
1269                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1270                                                  unsigned char *sig,
1271                                                  size_t *siglen,
1272                                                  EVP_MD_CTX *mctx))
1273 {
1274     if (psignctx_init)
1275         *psignctx_init = pmeth->signctx_init;
1276     if (psignctx)
1277         *psignctx = pmeth->signctx;
1278 }
1279
1280 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1281                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1282                                                           EVP_MD_CTX *mctx),
1283                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1284                                                      const unsigned char *sig,
1285                                                      int siglen,
1286                                                      EVP_MD_CTX *mctx))
1287 {
1288     if (pverifyctx_init)
1289         *pverifyctx_init = pmeth->verifyctx_init;
1290     if (pverifyctx)
1291         *pverifyctx = pmeth->verifyctx;
1292 }
1293
1294 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1295                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1296                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1297                                                    unsigned char *out,
1298                                                    size_t *outlen,
1299                                                    const unsigned char *in,
1300                                                    size_t inlen))
1301 {
1302     if (pencrypt_init)
1303         *pencrypt_init = pmeth->encrypt_init;
1304     if (pencryptfn)
1305         *pencryptfn = pmeth->encrypt;
1306 }
1307
1308 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1309                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1310                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1311                                                  unsigned char *out,
1312                                                  size_t *outlen,
1313                                                  const unsigned char *in,
1314                                                  size_t inlen))
1315 {
1316     if (pdecrypt_init)
1317         *pdecrypt_init = pmeth->decrypt_init;
1318     if (pdecrypt)
1319         *pdecrypt = pmeth->decrypt;
1320 }
1321
1322 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1323                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1324                               int (**pderive) (EVP_PKEY_CTX *ctx,
1325                                                unsigned char *key,
1326                                                size_t *keylen))
1327 {
1328     if (pderive_init)
1329         *pderive_init = pmeth->derive_init;
1330     if (pderive)
1331         *pderive = pmeth->derive;
1332 }
1333
1334 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1335                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1336                                            void *p2),
1337                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1338                                                const char *type,
1339                                                const char *value))
1340 {
1341     if (pctrl)
1342         *pctrl = pmeth->ctrl;
1343     if (pctrl_str)
1344         *pctrl_str = pmeth->ctrl_str;
1345 }
1346
1347 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1348     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1349                         const unsigned char *tbs, size_t tbslen))
1350 {
1351     if (digestsign)
1352         *digestsign = pmeth->digestsign;
1353 }
1354
1355 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1356     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1357                           size_t siglen, const unsigned char *tbs,
1358                           size_t tbslen))
1359 {
1360     if (digestverify)
1361         *digestverify = pmeth->digestverify;
1362 }
1363
1364 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1365                              int (**pcheck) (EVP_PKEY *pkey))
1366 {
1367     if (pcheck != NULL)
1368         *pcheck = pmeth->check;
1369 }
1370
1371 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1372                                     int (**pcheck) (EVP_PKEY *pkey))
1373 {
1374     if (pcheck != NULL)
1375         *pcheck = pmeth->public_check;
1376 }
1377
1378 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1379                                    int (**pcheck) (EVP_PKEY *pkey))
1380 {
1381     if (pcheck != NULL)
1382         *pcheck = pmeth->param_check;
1383 }
1384
1385 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1386                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1387                                                              EVP_MD_CTX *mctx))
1388 {
1389     if (pdigest_custom != NULL)
1390         *pdigest_custom = pmeth->digest_custom;
1391 }
1392
1393 #endif /* FIPS_MODE */