crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /*
  11  * Low level key APIs (DH etc) are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #ifndef FIPS_MODULE
  19 # include <openssl/engine.h>
  20 #endif
  21 #include <openssl/evp.h>
  22 #include <openssl/core_names.h>
  23 #include <openssl/dh.h>
  24 #include <openssl/rsa.h>
  25 #include <openssl/kdf.h>
  26 #include "internal/cryptlib.h"
  27 #ifndef FIPS_MODULE
  28 # include "crypto/asn1.h"
  29 #endif
  30 #include "crypto/evp.h"
  31 #include "crypto/dh.h"
  32 #include "crypto/ec.h"
  33 #include "internal/ffc.h"
  34 #include "internal/numbers.h"
  35 #include "internal/provider.h"
  36 #include "evp_local.h"
  37
  38 #ifndef FIPS_MODULE
  39
  40 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
  41                                           int keytype, int optype,
  42                                           int cmd, const char *name,
  43                                           const void *data, size_t data_len);
  44 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
  45                                           int cmd, const char *name);
  46 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
  47
  48 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  49 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  50
  51 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  52
  53 /* This array needs to be in order of NIDs */
  54 static pmeth_fn standard_methods[] = {
  55     ossl_rsa_pkey_method,
  56 # ifndef OPENSSL_NO_DH
  57     ossl_dh_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_DSA
  60     ossl_dsa_pkey_method,
  61 # endif
  62 # ifndef OPENSSL_NO_EC
  63     ossl_ec_pkey_method,
  64 # endif
  65     ossl_rsa_pss_pkey_method,
  66 # ifndef OPENSSL_NO_DH
  67     ossl_dhx_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_ECX
  70     ossl_ecx25519_pkey_method,
  71     ossl_ecx448_pkey_method,
  72     ossl_ed25519_pkey_method,
  73     ossl_ed448_pkey_method,
  74 # endif
  75 };
  76
  77 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  78
  79 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  80 {
  81     return ((*a)->pkey_id - ((**b)())->pkey_id);
  82 }
  83
  84 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  85
  86 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  87                      const EVP_PKEY_METHOD *const *b)
  88 {
  89     return ((*a)->pkey_id - (*b)->pkey_id);
  90 }
  91
  92 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
  93 {
  94     if (app_pkey_methods != NULL) {
  95         int idx;
  96         EVP_PKEY_METHOD tmp;
  97
  98         tmp.pkey_id = type;
  99         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 100         if (idx >= 0)
 101             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 102     }
 103     return NULL;
 104 }
 105
 106 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 107 {
 108     pmeth_fn *ret;
 109     EVP_PKEY_METHOD tmp;
 110     const EVP_PKEY_METHOD *t;
 111
 112     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
 113         return t;
 114
 115     tmp.pkey_id = type;
 116     t = &tmp;
 117     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 118                                  OSSL_NELEM(standard_methods));
 119     if (ret == NULL || *ret == NULL)
 120         return NULL;
 121     return (**ret)();
 122 }
 123
 124 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 125 {
 126     EVP_PKEY_METHOD *pmeth;
 127
 128     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 129     if (pmeth == NULL)
 130         return NULL;
 131
 132     pmeth->pkey_id = id;
 133     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 134     return pmeth;
 135 }
 136
 137 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 138                                                   void *arg)
 139 {
 140     int *type = arg;
 141
 142     if (*type == NID_undef)
 143         *type = evp_pkey_name2type(keytype);
 144 }
 145
 146 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 147 {
 148     int type = NID_undef;
 149
 150     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 151                              &type);
 152     return type;
 153 }
 154 #endif /* FIPS_MODULE */
 155
 156 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
 157 {
 158     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 159         return EVP_PKEY_STATE_UNKNOWN;
 160
 161     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 162          && ctx->op.kex.algctx != NULL)
 163         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 164             && ctx->op.sig.algctx != NULL)
 165         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 166             && ctx->op.ciph.algctx != NULL)
 167         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 168             && ctx->op.keymgmt.genctx != NULL)
 169         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 170             && ctx->op.encap.algctx != NULL))
 171         return EVP_PKEY_STATE_PROVIDER;
 172
 173     return EVP_PKEY_STATE_LEGACY;
 174 }
 175
 176 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 177                                  EVP_PKEY *pkey, ENGINE *e,
 178                                  const char *keytype, const char *propquery,
 179                                  int id)
 180
 181 {
 182     EVP_PKEY_CTX *ret = NULL;
 183     const EVP_PKEY_METHOD *pmeth = NULL, *app_pmeth = NULL;
 184     EVP_KEYMGMT *keymgmt = NULL;
 185
 186     /* Code below to be removed when legacy support is dropped. */
 187     /* BEGIN legacy */
 188     if (id == -1) {
 189         if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
 190             id = pkey->type;
 191         } else {
 192             if (pkey != NULL) {
 193                 /* Must be provided if we get here */
 194                 keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
 195             }
 196 #ifndef FIPS_MODULE
 197             if (keytype != NULL) {
 198                 id = evp_pkey_name2type(keytype);
 199                 if (id == NID_undef)
 200                     id = -1;
 201             }
 202 #endif
 203         }
 204     }
 205     /* If no ID was found here, we can only resort to find a keymgmt */
 206     if (id == -1) {
 207 #ifndef FIPS_MODULE
 208         /* Using engine with a key without id will not work */
 209         if (e != NULL) {
 210             ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 211             return NULL;
 212         }
 213 #endif
 214         goto common;
 215     }
 216
 217 #ifndef FIPS_MODULE
 218     /*
 219      * Here, we extract what information we can for the purpose of
 220      * supporting usage with implementations from providers, to make
 221      * for a smooth transition from legacy stuff to provider based stuff.
 222      *
 223      * If an engine is given, this is entirely legacy, and we should not
 224      * pretend anything else, so we clear the name.
 225      */
 226     if (e != NULL)
 227         keytype = NULL;
 228     if (e == NULL && (pkey == NULL || pkey->foreign == 0))
 229         keytype = OBJ_nid2sn(id);
 230
 231 # ifndef OPENSSL_NO_ENGINE
 232     if (e == NULL && pkey != NULL)
 233         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 234     /* Try to find an ENGINE which implements this method */
 235     if (e != NULL) {
 236         if (!ENGINE_init(e)) {
 237             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 238             return NULL;
 239         }
 240     } else {
 241         e = ENGINE_get_pkey_meth_engine(id);
 242     }
 243
 244     /*
 245      * If an ENGINE handled this method look it up. Otherwise use internal
 246      * tables.
 247      */
 248     if (e != NULL)
 249         pmeth = ENGINE_get_pkey_meth(e, id);
 250     else if (pkey != NULL && pkey->foreign)
 251         pmeth = EVP_PKEY_meth_find(id);
 252     else
 253 # endif
 254         app_pmeth = pmeth = evp_pkey_meth_find_added_by_application(id);
 255
 256     /* END legacy */
 257 #endif /* FIPS_MODULE */
 258  common:
 259     /*
 260      * If there's no engine and no app supplied pmeth and there's a name, we try
 261      * fetching a provider implementation.
 262      */
 263     if (e == NULL && app_pmeth == NULL && keytype != NULL) {
 264         /*
 265          * If |pkey| is given and is provided, we take a reference to its
 266          * keymgmt.  Otherwise, we fetch one for the keytype we got. This
 267          * is to ensure that operation init functions can access what they
 268          * need through this single pointer.
 269          */
 270         if (pkey != NULL && pkey->keymgmt != NULL) {
 271             if (!EVP_KEYMGMT_up_ref(pkey->keymgmt))
 272                 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
 273             else
 274                 keymgmt = pkey->keymgmt;
 275         } else {
 276             keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 277         }
 278         if (keymgmt == NULL)
 279             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 280
 281 #ifndef FIPS_MODULE
 282         /*
 283          * Chase down the legacy NID, as that might be needed for diverse
 284          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 285          * values. We go through all keymgmt names, because the keytype
 286          * that's passed to this function doesn't necessarily translate
 287          * directly.
 288          */
 289         if (keymgmt != NULL) {
 290             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 291
 292             if (tmp_id != NID_undef) {
 293                 if (id == -1) {
 294                     id = tmp_id;
 295                 } else {
 296                     /*
 297                      * It really really shouldn't differ.  If it still does,
 298                      * something is very wrong.
 299                      */
 300                     if (!ossl_assert(id == tmp_id)) {
 301                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 302                         EVP_KEYMGMT_free(keymgmt);
 303                         return NULL;
 304                     }
 305                 }
 306             }
 307         }
 308 #endif
 309     }
 310
 311     if (pmeth == NULL && keymgmt == NULL) {
 312         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 313     } else {
 314         ret = OPENSSL_zalloc(sizeof(*ret));
 315     }
 316
 317 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 318     if ((ret == NULL || pmeth == NULL) && e != NULL)
 319         ENGINE_finish(e);
 320 #endif
 321
 322     if (ret == NULL) {
 323         EVP_KEYMGMT_free(keymgmt);
 324         return NULL;
 325     }
 326     if (propquery != NULL) {
 327         ret->propquery = OPENSSL_strdup(propquery);
 328         if (ret->propquery == NULL) {
 329             OPENSSL_free(ret);
 330             EVP_KEYMGMT_free(keymgmt);
 331             return NULL;
 332         }
 333     }
 334     ret->libctx = libctx;
 335     ret->keytype = keytype;
 336     ret->keymgmt = keymgmt;
 337     ret->legacy_keytype = id;
 338     ret->engine = e;
 339     ret->pmeth = pmeth;
 340     ret->operation = EVP_PKEY_OP_UNDEFINED;
 341     ret->pkey = pkey;
 342     if (pkey != NULL)
 343         EVP_PKEY_up_ref(pkey);
 344
 345     if (pmeth != NULL && pmeth->init != NULL) {
 346         if (pmeth->init(ret) <= 0) {
 347             ret->pmeth = NULL;
 348             EVP_PKEY_CTX_free(ret);
 349             return NULL;
 350         }
 351     }
 352
 353     return ret;
 354 }
 355
 356 /*- All methods below can also be used in FIPS_MODULE */
 357
 358 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 359                                          const char *name,
 360                                          const char *propquery)
 361 {
 362     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 363 }
 364
 365 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 366                                          const char *propquery)
 367 {
 368     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 369 }
 370
 371 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 372 {
 373     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 374         if (ctx->op.sig.algctx != NULL && ctx->op.sig.signature != NULL)
 375             ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
 376         EVP_SIGNATURE_free(ctx->op.sig.signature);
 377         ctx->op.sig.algctx = NULL;
 378         ctx->op.sig.signature = NULL;
 379     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 380         if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
 381             ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
 382         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 383         ctx->op.kex.algctx = NULL;
 384         ctx->op.kex.exchange = NULL;
 385     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 386         if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
 387             ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
 388         EVP_KEM_free(ctx->op.encap.kem);
 389         ctx->op.encap.algctx = NULL;
 390         ctx->op.encap.kem = NULL;
 391     }
 392     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 393         if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
 394             ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
 395         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 396         ctx->op.ciph.algctx = NULL;
 397         ctx->op.ciph.cipher = NULL;
 398     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 399         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 400             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 401     }
 402 }
 403
 404 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 405 {
 406     if (ctx == NULL)
 407         return;
 408     if (ctx->pmeth && ctx->pmeth->cleanup)
 409         ctx->pmeth->cleanup(ctx);
 410
 411     evp_pkey_ctx_free_old_ops(ctx);
 412 #ifndef FIPS_MODULE
 413     evp_pkey_ctx_free_all_cached_data(ctx);
 414 #endif
 415     EVP_KEYMGMT_free(ctx->keymgmt);
 416
 417     OPENSSL_free(ctx->propquery);
 418     EVP_PKEY_free(ctx->pkey);
 419     EVP_PKEY_free(ctx->peerkey);
 420 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 421     ENGINE_finish(ctx->engine);
 422 #endif
 423     BN_free(ctx->rsa_pubexp);
 424     OPENSSL_free(ctx);
 425 }
 426
 427 #ifndef FIPS_MODULE
 428
 429 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 430                              const EVP_PKEY_METHOD *meth)
 431 {
 432     if (ppkey_id)
 433         *ppkey_id = meth->pkey_id;
 434     if (pflags)
 435         *pflags = meth->flags;
 436 }
 437
 438 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 439 {
 440     int pkey_id = dst->pkey_id;
 441     int flags = dst->flags;
 442
 443     *dst = *src;
 444
 445     /* We only copy the function pointers so restore the other values */
 446     dst->pkey_id = pkey_id;
 447     dst->flags = flags;
 448 }
 449
 450 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 451 {
 452     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 453         OPENSSL_free(pmeth);
 454 }
 455
 456 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 457 {
 458     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 459 }
 460
 461 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 462 {
 463     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 464 }
 465
 466 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 467 {
 468     EVP_PKEY_CTX *rctx;
 469
 470 # ifndef OPENSSL_NO_ENGINE
 471     /* Make sure it's safe to copy a pkey context using an ENGINE */
 472     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 473         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 474         return 0;
 475     }
 476 # endif
 477     rctx = OPENSSL_zalloc(sizeof(*rctx));
 478     if (rctx == NULL)
 479         return NULL;
 480
 481     if (pctx->pkey != NULL)
 482         EVP_PKEY_up_ref(pctx->pkey);
 483     rctx->pkey = pctx->pkey;
 484     rctx->operation = pctx->operation;
 485     rctx->libctx = pctx->libctx;
 486     rctx->keytype = pctx->keytype;
 487     rctx->propquery = NULL;
 488     if (pctx->propquery != NULL) {
 489         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 490         if (rctx->propquery == NULL)
 491             goto err;
 492     }
 493     rctx->legacy_keytype = pctx->legacy_keytype;
 494
 495     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 496         if (pctx->op.kex.exchange != NULL) {
 497             rctx->op.kex.exchange = pctx->op.kex.exchange;
 498             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 499                 goto err;
 500         }
 501         if (pctx->op.kex.algctx != NULL) {
 502             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 503                 goto err;
 504
 505             if (pctx->op.kex.exchange->dupctx != NULL)
 506                 rctx->op.kex.algctx
 507                     = pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
 508
 509             if (rctx->op.kex.algctx == NULL) {
 510                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 511                 rctx->op.kex.exchange = NULL;
 512                 goto err;
 513             }
 514             return rctx;
 515         }
 516     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 517         if (pctx->op.sig.signature != NULL) {
 518             rctx->op.sig.signature = pctx->op.sig.signature;
 519             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 520                 goto err;
 521         }
 522         if (pctx->op.sig.algctx != NULL) {
 523             if (!ossl_assert(pctx->op.sig.signature != NULL))
 524                 goto err;
 525
 526             if (pctx->op.sig.signature->dupctx != NULL)
 527                 rctx->op.sig.algctx
 528                     = pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
 529
 530             if (rctx->op.sig.algctx == NULL) {
 531                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 532                 rctx->op.sig.signature = NULL;
 533                 goto err;
 534             }
 535             return rctx;
 536         }
 537     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 538         if (pctx->op.ciph.cipher != NULL) {
 539             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 540             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 541                 goto err;
 542         }
 543         if (pctx->op.ciph.algctx != NULL) {
 544             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 545                 goto err;
 546
 547             if (pctx->op.ciph.cipher->dupctx != NULL)
 548                 rctx->op.ciph.algctx
 549                     = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
 550
 551             if (rctx->op.ciph.algctx == NULL) {
 552                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 553                 rctx->op.ciph.cipher = NULL;
 554                 goto err;
 555             }
 556             return rctx;
 557         }
 558     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 559         if (pctx->op.encap.kem != NULL) {
 560             rctx->op.encap.kem = pctx->op.encap.kem;
 561             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 562                 goto err;
 563         }
 564         if (pctx->op.encap.algctx != NULL) {
 565             if (!ossl_assert(pctx->op.encap.kem != NULL))
 566                 goto err;
 567
 568             if (pctx->op.encap.kem->dupctx != NULL)
 569                 rctx->op.encap.algctx
 570                     = pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
 571
 572             if (rctx->op.encap.algctx == NULL) {
 573                 EVP_KEM_free(rctx->op.encap.kem);
 574                 rctx->op.encap.kem = NULL;
 575                 goto err;
 576             }
 577             return rctx;
 578         }
 579     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 580         /* Not supported - This would need a gen_dupctx() to work */
 581         goto err;
 582     }
 583
 584     rctx->pmeth = pctx->pmeth;
 585 # ifndef OPENSSL_NO_ENGINE
 586     rctx->engine = pctx->engine;
 587 # endif
 588
 589     if (pctx->peerkey != NULL)
 590         EVP_PKEY_up_ref(pctx->peerkey);
 591     rctx->peerkey = pctx->peerkey;
 592
 593     if (pctx->pmeth == NULL) {
 594         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 595             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 596             void *provkey;
 597
 598             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 599                                                   &tmp_keymgmt, pctx->propquery);
 600             if (provkey == NULL)
 601                 goto err;
 602             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 603                 goto err;
 604             EVP_KEYMGMT_free(rctx->keymgmt);
 605             rctx->keymgmt = tmp_keymgmt;
 606             return rctx;
 607         }
 608     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 609         return rctx;
 610     }
 611 err:
 612     rctx->pmeth = NULL;
 613     EVP_PKEY_CTX_free(rctx);
 614     return NULL;
 615 }
 616
 617 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 618 {
 619     if (app_pkey_methods == NULL) {
 620         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 621         if (app_pkey_methods == NULL) {
 622             ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
 623             return 0;
 624         }
 625     }
 626     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 627         ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
 628         return 0;
 629     }
 630     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 631     return 1;
 632 }
 633
 634 void evp_app_cleanup_int(void)
 635 {
 636     if (app_pkey_methods != NULL)
 637         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 638 }
 639
 640 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 641 {
 642     const EVP_PKEY_METHOD *ret;
 643
 644     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 645
 646     return ret == NULL ? 0 : 1;
 647 }
 648
 649 size_t EVP_PKEY_meth_get_count(void)
 650 {
 651     size_t rv = OSSL_NELEM(standard_methods);
 652
 653     if (app_pkey_methods)
 654         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 655     return rv;
 656 }
 657
 658 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 659 {
 660     if (idx < OSSL_NELEM(standard_methods))
 661         return (standard_methods[idx])();
 662     if (app_pkey_methods == NULL)
 663         return NULL;
 664     idx -= OSSL_NELEM(standard_methods);
 665     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 666         return NULL;
 667     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 668 }
 669 #endif
 670
 671 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
 672 {
 673 #ifndef FIPS_MODULE
 674     if (evp_pkey_ctx_is_legacy(ctx))
 675         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
 676 #endif
 677     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
 678 }
 679
 680 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
 681 {
 682     switch (evp_pkey_ctx_state(ctx)) {
 683     case EVP_PKEY_STATE_PROVIDER:
 684         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 685             && ctx->op.kex.exchange != NULL
 686             && ctx->op.kex.exchange->set_ctx_params != NULL)
 687             return
 688                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
 689                                                      params);
 690         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 691             && ctx->op.sig.signature != NULL
 692             && ctx->op.sig.signature->set_ctx_params != NULL)
 693             return
 694                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
 695                                                       params);
 696         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 697             && ctx->op.ciph.cipher != NULL
 698             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 699             return
 700                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
 701                                                     params);
 702         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 703             && ctx->keymgmt != NULL
 704             && ctx->keymgmt->gen_set_params != NULL)
 705             return
 706                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 707                                            params);
 708         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 709             && ctx->op.encap.kem != NULL
 710             && ctx->op.encap.kem->set_ctx_params != NULL)
 711             return
 712                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
 713                                                   params);
 714         break;
 715 #ifndef FIPS_MODULE
 716     case EVP_PKEY_STATE_UNKNOWN:
 717     case EVP_PKEY_STATE_LEGACY:
 718         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
 719 #endif
 720     }
 721     return 0;
 722 }
 723
 724 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 725 {
 726     switch (evp_pkey_ctx_state(ctx)) {
 727     case EVP_PKEY_STATE_PROVIDER:
 728         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 729             && ctx->op.kex.exchange != NULL
 730             && ctx->op.kex.exchange->get_ctx_params != NULL)
 731             return
 732                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
 733                                                      params);
 734         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 735             && ctx->op.sig.signature != NULL
 736             && ctx->op.sig.signature->get_ctx_params != NULL)
 737             return
 738                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
 739                                                       params);
 740         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 741             && ctx->op.ciph.cipher != NULL
 742             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 743             return
 744                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
 745                                                     params);
 746         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 747             && ctx->op.encap.kem != NULL
 748             && ctx->op.encap.kem->get_ctx_params != NULL)
 749             return
 750                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
 751                                                   params);
 752         break;
 753 #ifndef FIPS_MODULE
 754     case EVP_PKEY_STATE_UNKNOWN:
 755     case EVP_PKEY_STATE_LEGACY:
 756         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
 757 #endif
 758     }
 759     return 0;
 760 }
 761
 762 #ifndef FIPS_MODULE
 763 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
 764 {
 765     void *provctx;
 766
 767     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 768             && ctx->op.kex.exchange != NULL
 769             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 770         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 771         return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
 772                                                          provctx);
 773     }
 774     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 775             && ctx->op.sig.signature != NULL
 776             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 777         provctx = ossl_provider_ctx(
 778                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 779         return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
 780                                                           provctx);
 781     }
 782     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 783             && ctx->op.ciph.cipher != NULL
 784             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 785         provctx = ossl_provider_ctx(
 786                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 787         return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
 788                                                         provctx);
 789     }
 790     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 791         && ctx->op.encap.kem != NULL
 792         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 793         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 794         return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
 795                                                       provctx);
 796     }
 797     return NULL;
 798 }
 799
 800 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
 801 {
 802     void *provctx;
 803
 804     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 805             && ctx->op.kex.exchange != NULL
 806             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 807         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 808         return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
 809                                                          provctx);
 810     }
 811     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 812             && ctx->op.sig.signature != NULL
 813             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 814         provctx = ossl_provider_ctx(
 815                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 816         return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
 817                                                           provctx);
 818     }
 819     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 820             && ctx->op.ciph.cipher != NULL
 821             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 822         provctx = ossl_provider_ctx(
 823                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 824         return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
 825                                                         provctx);
 826     }
 827     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 828             && ctx->keymgmt != NULL
 829             && ctx->keymgmt->gen_settable_params != NULL) {
 830         provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
 831         return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
 832                                                  provctx);
 833     }
 834     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 835         && ctx->op.encap.kem != NULL
 836         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 837         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 838         return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
 839                                                       provctx);
 840     }
 841     return NULL;
 842 }
 843
 844 /*
 845  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 846  *
 847  * Return 1 on success, 0 or negative for errors.
 848  *
 849  * In particular they return -2 if any of the params is not supported.
 850  *
 851  * They are not available in FIPS_MODULE as they depend on
 852  *      - EVP_PKEY_CTX_{get,set}_params()
 853  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 854  *
 855  */
 856 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 857 {
 858     if (ctx == NULL || params == NULL)
 859         return 0;
 860
 861     /*
 862      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 863      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
 864      * call, and that the resulting ctrl call will return -2 if it doesn't
 865      * known the ctrl command number.
 866      */
 867     if (evp_pkey_ctx_is_provided(ctx)) {
 868         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 869         const OSSL_PARAM *p;
 870
 871         for (p = params; p->key != NULL; p++) {
 872             /* Check the ctx actually understands this parameter */
 873             if (OSSL_PARAM_locate_const(settable, p->key) == NULL)
 874                 return -2;
 875         }
 876     }
 877
 878     return EVP_PKEY_CTX_set_params(ctx, params);
 879 }
 880
 881 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 882 {
 883     if (ctx == NULL || params == NULL)
 884         return 0;
 885
 886     /*
 887      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 888      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
 889      * call, and that the resulting ctrl call will return -2 if it doesn't
 890      * known the ctrl command number.
 891      */
 892     if (evp_pkey_ctx_is_provided(ctx)) {
 893         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
 894         const OSSL_PARAM *p;
 895
 896         for (p = params; p->key != NULL; p++) {
 897             /* Check the ctx actually understands this parameter */
 898             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL)
 899                 return -2;
 900         }
 901     }
 902
 903     return EVP_PKEY_CTX_get_params(ctx, params);
 904 }
 905
 906 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 907 {
 908     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 909     /* 80 should be big enough */
 910     char name[80] = "";
 911     const EVP_MD *tmp;
 912
 913     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 914         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 915         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 916         return -2;
 917     }
 918
 919     if (ctx->op.sig.algctx == NULL)
 920         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 921                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 922
 923     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 924                                             name,
 925                                             sizeof(name));
 926     *p = OSSL_PARAM_construct_end();
 927
 928     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 929         return 0;
 930
 931     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 932     if (tmp == NULL)
 933         return 0;
 934
 935     *md = tmp;
 936
 937     return 1;
 938 }
 939
 940 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 941                                int fallback, const char *param, int op,
 942                                int ctrl)
 943 {
 944     OSSL_PARAM md_params[2], *p = md_params;
 945     const char *name;
 946
 947     if (ctx == NULL || (ctx->operation & op) == 0) {
 948         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 949         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 950         return -2;
 951     }
 952
 953     if (fallback)
 954         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 955
 956     if (md == NULL) {
 957         name = "";
 958     } else {
 959         name = EVP_MD_get0_name(md);
 960     }
 961
 962     *p++ = OSSL_PARAM_construct_utf8_string(param,
 963                                             /*
 964                                              * Cast away the const. This is read
 965                                              * only so should be safe
 966                                              */
 967                                             (char *)name, 0);
 968     *p = OSSL_PARAM_construct_end();
 969
 970     return EVP_PKEY_CTX_set_params(ctx, md_params);
 971 }
 972
 973 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 974 {
 975     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
 976                                OSSL_SIGNATURE_PARAM_DIGEST,
 977                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 978 }
 979
 980 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 981 {
 982     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
 983                                OSSL_KDF_PARAM_DIGEST,
 984                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 985 }
 986
 987 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 988                                           const char *param, int op, int ctrl,
 989                                           const unsigned char *data,
 990                                           int datalen)
 991 {
 992     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 993
 994     if (ctx == NULL || (ctx->operation & op) == 0) {
 995         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 996         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 997         return -2;
 998     }
 999
1000     /* Code below to be removed when legacy support is dropped. */
1001     if (fallback)
1002         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
1003     /* end of legacy support */
1004
1005     if (datalen < 0) {
1006         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
1007         return 0;
1008     }
1009
1010     *p++ = OSSL_PARAM_construct_octet_string(param,
1011                                             /*
1012                                              * Cast away the const. This is read
1013                                              * only so should be safe
1014                                              */
1015                                             (unsigned char *)data,
1016                                             (size_t)datalen);
1017     *p = OSSL_PARAM_construct_end();
1018
1019     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
1020 }
1021
1022 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1023                                       const unsigned char *sec, int seclen)
1024 {
1025     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1026                                           OSSL_KDF_PARAM_SECRET,
1027                                           EVP_PKEY_OP_DERIVE,
1028                                           EVP_PKEY_CTRL_TLS_SECRET,
1029                                           sec, seclen);
1030 }
1031
1032 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1033                                     const unsigned char *seed, int seedlen)
1034 {
1035     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1036                                           OSSL_KDF_PARAM_SEED,
1037                                           EVP_PKEY_OP_DERIVE,
1038                                           EVP_PKEY_CTRL_TLS_SEED,
1039                                           seed, seedlen);
1040 }
1041
1042 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1043 {
1044     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
1045                                OSSL_KDF_PARAM_DIGEST,
1046                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1047 }
1048
1049 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1050                                 const unsigned char *salt, int saltlen)
1051 {
1052     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1053                                           OSSL_KDF_PARAM_SALT,
1054                                           EVP_PKEY_OP_DERIVE,
1055                                           EVP_PKEY_CTRL_HKDF_SALT,
1056                                           salt, saltlen);
1057 }
1058
1059 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1060                                       const unsigned char *key, int keylen)
1061 {
1062     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1063                                           OSSL_KDF_PARAM_KEY,
1064                                           EVP_PKEY_OP_DERIVE,
1065                                           EVP_PKEY_CTRL_HKDF_KEY,
1066                                           key, keylen);
1067 }
1068
1069 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1070                                       const unsigned char *info, int infolen)
1071 {
1072     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1073                                           OSSL_KDF_PARAM_INFO,
1074                                           EVP_PKEY_OP_DERIVE,
1075                                           EVP_PKEY_CTRL_HKDF_INFO,
1076                                           info, infolen);
1077 }
1078
1079 int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1080 {
1081     OSSL_PARAM int_params[2], *p = int_params;
1082
1083     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1084         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1085         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1086         return -2;
1087     }
1088
1089     /* Code below to be removed when legacy support is dropped. */
1090     if (ctx->op.kex.algctx == NULL)
1091         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1092                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1093     /* end of legacy support */
1094
1095     if (mode < 0) {
1096         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1097         return 0;
1098     }
1099
1100     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1101     *p = OSSL_PARAM_construct_end();
1102
1103     return EVP_PKEY_CTX_set_params(ctx, int_params);
1104 }
1105
1106 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1107                                int passlen)
1108 {
1109     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1110                                           OSSL_KDF_PARAM_PASSWORD,
1111                                           EVP_PKEY_OP_DERIVE,
1112                                           EVP_PKEY_CTRL_PASS,
1113                                           (const unsigned char *)pass, passlen);
1114 }
1115
1116 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1117                                   const unsigned char *salt, int saltlen)
1118 {
1119     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1120                                           OSSL_KDF_PARAM_SALT,
1121                                           EVP_PKEY_OP_DERIVE,
1122                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1123                                           salt, saltlen);
1124 }
1125
1126 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1127                                    int op, int ctrl, uint64_t val)
1128 {
1129     OSSL_PARAM uint64_params[2], *p = uint64_params;
1130
1131     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1132         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1133         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1134         return -2;
1135     }
1136
1137     /* Code below to be removed when legacy support is dropped. */
1138     if (ctx->op.kex.algctx == NULL)
1139         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1140     /* end of legacy support */
1141
1142     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1143     *p = OSSL_PARAM_construct_end();
1144
1145     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1146 }
1147
1148 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1149 {
1150     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1151                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1152                                    n);
1153 }
1154
1155 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1156 {
1157     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1158                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1159                                    r);
1160 }
1161
1162 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1163 {
1164     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1165                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1166                                    p);
1167 }
1168
1169 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1170                                          uint64_t maxmem_bytes)
1171 {
1172     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1173                                    EVP_PKEY_OP_DERIVE,
1174                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1175                                    maxmem_bytes);
1176 }
1177
1178 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1179                              int keylen)
1180 {
1181     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1182                                           OSSL_PKEY_PARAM_PRIV_KEY,
1183                                           EVP_PKEY_OP_KEYGEN,
1184                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1185                                           key, keylen);
1186 }
1187
1188 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1189 {
1190     OSSL_PARAM params[2], *p = params;
1191
1192     if (ctx == NULL || op == NULL) {
1193         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1194         return 0;
1195     }
1196     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1197         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1198         return -2;
1199     }
1200     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1201                                             (char *)op, 0);
1202     *p = OSSL_PARAM_construct_end();
1203     return EVP_PKEY_CTX_set_params(ctx, params);
1204 }
1205
1206 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1207 {
1208     OSSL_PARAM params[2], *p = params;
1209     int ret;
1210
1211     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1212         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1213         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1214         return -2;
1215     }
1216
1217     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1218                                              /*
1219                                               * Cast away the const. This is
1220                                               * read only so should be safe
1221                                               */
1222                                              (void *)id, (size_t)len);
1223     *p++ = OSSL_PARAM_construct_end();
1224
1225     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1226     if (ret == -2)
1227         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1228     return ret;
1229 }
1230
1231 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1232 {
1233     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1234                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1235 }
1236
1237 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1238 {
1239     int ret;
1240     void *tmp_id = NULL;
1241     OSSL_PARAM params[2], *p = params;
1242
1243     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1244         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1245         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1246         return -2;
1247     }
1248
1249     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1250                                           &tmp_id, 0);
1251     *p++ = OSSL_PARAM_construct_end();
1252
1253     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1254     if (ret == -2) {
1255         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1256     } else if (ret > 0) {
1257         size_t tmp_id_len = params[0].return_size;
1258
1259         if (id != NULL)
1260             memcpy(id, tmp_id, tmp_id_len);
1261         if (id_len != NULL)
1262             *id_len = tmp_id_len;
1263     }
1264     return ret;
1265 }
1266
1267 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1268 {
1269     return get1_id_data(ctx, id, NULL);
1270 }
1271
1272 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1273 {
1274     return get1_id_data(ctx, NULL, id_len);
1275 }
1276
1277 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1278 {
1279     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1280 }
1281
1282 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1283 {
1284     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1285                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1286 }
1287
1288 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1289                                  int cmd, int p1, void *p2)
1290 {
1291     int ret = 0;
1292
1293     /*
1294      * If the method has a |digest_custom| function, we can relax the
1295      * operation type check, since this can be called before the operation
1296      * is initialized.
1297      */
1298     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1299         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1300             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1301             return -1;
1302         }
1303
1304         if ((optype != -1) && !(ctx->operation & optype)) {
1305             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1306             return -1;
1307         }
1308     }
1309
1310     switch (evp_pkey_ctx_state(ctx)) {
1311     case EVP_PKEY_STATE_PROVIDER:
1312         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1313     case EVP_PKEY_STATE_UNKNOWN:
1314     case EVP_PKEY_STATE_LEGACY:
1315         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1316             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1317             return -2;
1318         }
1319         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1320             return -1;
1321
1322         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1323
1324         if (ret == -2)
1325             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1326         break;
1327     }
1328     return ret;
1329 }
1330
1331 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1332                       int cmd, int p1, void *p2)
1333 {
1334     int ret = 0;
1335
1336     if (ctx == NULL) {
1337         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1338         return -2;
1339     }
1340     /* If unsupported, we don't want that reported here */
1341     ERR_set_mark();
1342     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1343                                          cmd, NULL, p2, p1);
1344     if (ret == -2) {
1345         ERR_pop_to_mark();
1346     } else {
1347         ERR_clear_last_mark();
1348         /*
1349          * If there was an error, there was an error.
1350          * If the operation isn't initialized yet, we also return, as
1351          * the saved values will be used then anyway.
1352          */
1353         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1354             return ret;
1355     }
1356     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1357 }
1358
1359 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1360                              int cmd, uint64_t value)
1361 {
1362     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1363 }
1364
1365
1366 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1367                                      const char *name, const char *value)
1368 {
1369     int ret = 0;
1370
1371     if (ctx == NULL) {
1372         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1373         return -2;
1374     }
1375
1376     switch (evp_pkey_ctx_state(ctx)) {
1377     case EVP_PKEY_STATE_PROVIDER:
1378         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1379     case EVP_PKEY_STATE_UNKNOWN:
1380     case EVP_PKEY_STATE_LEGACY:
1381         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1382             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1383             return -2;
1384         }
1385         if (strcmp(name, "digest") == 0)
1386             ret = EVP_PKEY_CTX_md(ctx,
1387                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1388                                   EVP_PKEY_CTRL_MD, value);
1389         else
1390             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1391         break;
1392     }
1393
1394     return ret;
1395 }
1396
1397 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1398                           const char *name, const char *value)
1399 {
1400     int ret = 0;
1401
1402     /* If unsupported, we don't want that reported here */
1403     ERR_set_mark();
1404     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1405                                          name, value, strlen(value) + 1);
1406     if (ret == -2) {
1407         ERR_pop_to_mark();
1408     } else {
1409         ERR_clear_last_mark();
1410         /*
1411          * If there was an error, there was an error.
1412          * If the operation isn't initialized yet, we also return, as
1413          * the saved values will be used then anyway.
1414          */
1415         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1416             return ret;
1417     }
1418
1419     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1420 }
1421
1422 static int decode_cmd(int cmd, const char *name)
1423 {
1424     if (cmd == -1) {
1425         /*
1426          * The consequence of the assertion not being true is that this
1427          * function will return -1, which will cause the calling functions
1428          * to signal that the command is unsupported...  in non-debug mode.
1429          */
1430         if (ossl_assert(name != NULL))
1431             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1432                 cmd = EVP_PKEY_CTRL_SET1_ID;
1433     }
1434
1435     return cmd;
1436 }
1437
1438 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1439                                           int keytype, int optype,
1440                                           int cmd, const char *name,
1441                                           const void *data, size_t data_len)
1442 {
1443     /*
1444      * Check that it's one of the supported commands.  The ctrl commands
1445      * number cases here must correspond to the cases in the bottom switch
1446      * in this function.
1447      */
1448     switch (cmd = decode_cmd(cmd, name)) {
1449     case EVP_PKEY_CTRL_SET1_ID:
1450         break;
1451     default:
1452         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1453         return -2;
1454     }
1455
1456     if (keytype != -1) {
1457         switch (evp_pkey_ctx_state(ctx)) {
1458         case EVP_PKEY_STATE_PROVIDER:
1459             if (ctx->keymgmt == NULL) {
1460                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1461                 return -2;
1462             }
1463             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1464                                   evp_pkey_type2name(keytype))) {
1465                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1466                 return -1;
1467             }
1468             break;
1469         case EVP_PKEY_STATE_UNKNOWN:
1470         case EVP_PKEY_STATE_LEGACY:
1471             if (ctx->pmeth == NULL) {
1472                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1473                 return -2;
1474             }
1475             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1476                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1477                 return -1;
1478             }
1479             break;
1480         }
1481     }
1482     if (optype != -1 && (ctx->operation & optype) == 0) {
1483         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1484         return -1;
1485     }
1486
1487     switch (cmd) {
1488     case EVP_PKEY_CTRL_SET1_ID:
1489         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1490         if (name != NULL) {
1491             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1492             if (ctx->cached_parameters.dist_id_name == NULL)
1493                 return 0;
1494         }
1495         if (data_len > 0) {
1496             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1497             if (ctx->cached_parameters.dist_id == NULL)
1498                 return 0;
1499         }
1500         ctx->cached_parameters.dist_id_set = 1;
1501         ctx->cached_parameters.dist_id_len = data_len;
1502         break;
1503     }
1504     return 1;
1505 }
1506
1507 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1508                                           int cmd, const char *name)
1509 {
1510     cmd = decode_cmd(cmd, name);
1511     switch (cmd) {
1512     case EVP_PKEY_CTRL_SET1_ID:
1513         OPENSSL_free(ctx->cached_parameters.dist_id);
1514         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1515         ctx->cached_parameters.dist_id = NULL;
1516         ctx->cached_parameters.dist_id_name = NULL;
1517         break;
1518     }
1519 }
1520
1521 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1522 {
1523     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1524 }
1525
1526 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1527 {
1528     int ret = 1;
1529
1530     if (ret && ctx->cached_parameters.dist_id_set) {
1531         const char *name = ctx->cached_parameters.dist_id_name;
1532         const void *val = ctx->cached_parameters.dist_id;
1533         size_t len = ctx->cached_parameters.dist_id_len;
1534
1535         if (name != NULL)
1536             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1537         else
1538             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1539                                         EVP_PKEY_CTRL_SET1_ID,
1540                                         (int)len, (void *)val);
1541     }
1542
1543     return ret;
1544 }
1545
1546 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1547 {
1548     return ctx->libctx;
1549 }
1550
1551 const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx)
1552 {
1553     return ctx->propquery;
1554 }
1555
1556 const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx)
1557 {
1558     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1559         if (ctx->op.sig.signature != NULL)
1560             return EVP_SIGNATURE_get0_provider(ctx->op.sig.signature);
1561     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1562         if (ctx->op.kex.exchange != NULL)
1563             return EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange);
1564     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1565         if (ctx->op.encap.kem != NULL)
1566             return EVP_KEM_get0_provider(ctx->op.encap.kem);
1567     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
1568         if (ctx->op.ciph.cipher != NULL)
1569             return EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher);
1570     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1571         if (ctx->keymgmt != NULL)
1572             return EVP_KEYMGMT_get0_provider(ctx->keymgmt);
1573     }
1574
1575     return NULL;
1576 }
1577
1578 /* Utility functions to send a string of hex string to a ctrl */
1579
1580 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1581 {
1582     size_t len;
1583
1584     len = strlen(str);
1585     if (len > INT_MAX)
1586         return -1;
1587     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1588 }
1589
1590 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1591 {
1592     unsigned char *bin;
1593     long binlen;
1594     int rv = -1;
1595
1596     bin = OPENSSL_hexstr2buf(hex, &binlen);
1597     if (bin == NULL)
1598         return 0;
1599     if (binlen <= INT_MAX)
1600         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1601     OPENSSL_free(bin);
1602     return rv;
1603 }
1604
1605 /* Pass a message digest to a ctrl */
1606 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1607 {
1608     const EVP_MD *m;
1609
1610     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1611         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1612         return 0;
1613     }
1614     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1615 }
1616
1617 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1618 {
1619     return ctx->operation;
1620 }
1621
1622 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1623 {
1624     ctx->keygen_info = dat;
1625     ctx->keygen_info_count = datlen;
1626 }
1627
1628 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1629 {
1630     ctx->data = data;
1631 }
1632
1633 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1634 {
1635     return ctx->data;
1636 }
1637
1638 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1639 {
1640     return ctx->pkey;
1641 }
1642
1643 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1644 {
1645     return ctx->peerkey;
1646 }
1647
1648 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1649 {
1650     ctx->app_data = data;
1651 }
1652
1653 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1654 {
1655     return ctx->app_data;
1656 }
1657
1658 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1659                             int (*init) (EVP_PKEY_CTX *ctx))
1660 {
1661     pmeth->init = init;
1662 }
1663
1664 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1665                             int (*copy) (EVP_PKEY_CTX *dst,
1666                                          const EVP_PKEY_CTX *src))
1667 {
1668     pmeth->copy = copy;
1669 }
1670
1671 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1672                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1673 {
1674     pmeth->cleanup = cleanup;
1675 }
1676
1677 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1678                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1679                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1680                                                  EVP_PKEY *pkey))
1681 {
1682     pmeth->paramgen_init = paramgen_init;
1683     pmeth->paramgen = paramgen;
1684 }
1685
1686 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1687                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1688                               int (*keygen) (EVP_PKEY_CTX *ctx,
1689                                              EVP_PKEY *pkey))
1690 {
1691     pmeth->keygen_init = keygen_init;
1692     pmeth->keygen = keygen;
1693 }
1694
1695 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1696                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1697                             int (*sign) (EVP_PKEY_CTX *ctx,
1698                                          unsigned char *sig, size_t *siglen,
1699                                          const unsigned char *tbs,
1700                                          size_t tbslen))
1701 {
1702     pmeth->sign_init = sign_init;
1703     pmeth->sign = sign;
1704 }
1705
1706 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1707                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1708                               int (*verify) (EVP_PKEY_CTX *ctx,
1709                                              const unsigned char *sig,
1710                                              size_t siglen,
1711                                              const unsigned char *tbs,
1712                                              size_t tbslen))
1713 {
1714     pmeth->verify_init = verify_init;
1715     pmeth->verify = verify;
1716 }
1717
1718 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1719                                       int (*verify_recover_init) (EVP_PKEY_CTX
1720                                                                   *ctx),
1721                                       int (*verify_recover) (EVP_PKEY_CTX
1722                                                              *ctx,
1723                                                              unsigned char
1724                                                              *sig,
1725                                                              size_t *siglen,
1726                                                              const unsigned
1727                                                              char *tbs,
1728                                                              size_t tbslen))
1729 {
1730     pmeth->verify_recover_init = verify_recover_init;
1731     pmeth->verify_recover = verify_recover;
1732 }
1733
1734 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1735                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1736                                                     EVP_MD_CTX *mctx),
1737                                int (*signctx) (EVP_PKEY_CTX *ctx,
1738                                                unsigned char *sig,
1739                                                size_t *siglen,
1740                                                EVP_MD_CTX *mctx))
1741 {
1742     pmeth->signctx_init = signctx_init;
1743     pmeth->signctx = signctx;
1744 }
1745
1746 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1747                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1748                                                         EVP_MD_CTX *mctx),
1749                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1750                                                    const unsigned char *sig,
1751                                                    int siglen,
1752                                                    EVP_MD_CTX *mctx))
1753 {
1754     pmeth->verifyctx_init = verifyctx_init;
1755     pmeth->verifyctx = verifyctx;
1756 }
1757
1758 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1759                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1760                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1761                                                  unsigned char *out,
1762                                                  size_t *outlen,
1763                                                  const unsigned char *in,
1764                                                  size_t inlen))
1765 {
1766     pmeth->encrypt_init = encrypt_init;
1767     pmeth->encrypt = encryptfn;
1768 }
1769
1770 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1771                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1772                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1773                                                unsigned char *out,
1774                                                size_t *outlen,
1775                                                const unsigned char *in,
1776                                                size_t inlen))
1777 {
1778     pmeth->decrypt_init = decrypt_init;
1779     pmeth->decrypt = decrypt;
1780 }
1781
1782 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1783                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1784                               int (*derive) (EVP_PKEY_CTX *ctx,
1785                                              unsigned char *key,
1786                                              size_t *keylen))
1787 {
1788     pmeth->derive_init = derive_init;
1789     pmeth->derive = derive;
1790 }
1791
1792 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1793                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1794                                          void *p2),
1795                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1796                                              const char *type,
1797                                              const char *value))
1798 {
1799     pmeth->ctrl = ctrl;
1800     pmeth->ctrl_str = ctrl_str;
1801 }
1802
1803 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1804     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1805                        const unsigned char *tbs, size_t tbslen))
1806 {
1807     pmeth->digestsign = digestsign;
1808 }
1809
1810 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1811     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1812                          size_t siglen, const unsigned char *tbs,
1813                          size_t tbslen))
1814 {
1815     pmeth->digestverify = digestverify;
1816 }
1817
1818 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1819                              int (*check) (EVP_PKEY *pkey))
1820 {
1821     pmeth->check = check;
1822 }
1823
1824 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1825                                     int (*check) (EVP_PKEY *pkey))
1826 {
1827     pmeth->public_check = check;
1828 }
1829
1830 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1831                                    int (*check) (EVP_PKEY *pkey))
1832 {
1833     pmeth->param_check = check;
1834 }
1835
1836 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1837                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1838                                                            EVP_MD_CTX *mctx))
1839 {
1840     pmeth->digest_custom = digest_custom;
1841 }
1842
1843 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1844                             int (**pinit) (EVP_PKEY_CTX *ctx))
1845 {
1846     *pinit = pmeth->init;
1847 }
1848
1849 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1850                             int (**pcopy) (EVP_PKEY_CTX *dst,
1851                                            const EVP_PKEY_CTX *src))
1852 {
1853     *pcopy = pmeth->copy;
1854 }
1855
1856 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1857                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1858 {
1859     *pcleanup = pmeth->cleanup;
1860 }
1861
1862 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1863                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1864                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1865                                                    EVP_PKEY *pkey))
1866 {
1867     if (pparamgen_init)
1868         *pparamgen_init = pmeth->paramgen_init;
1869     if (pparamgen)
1870         *pparamgen = pmeth->paramgen;
1871 }
1872
1873 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1874                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1875                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1876                                                EVP_PKEY *pkey))
1877 {
1878     if (pkeygen_init)
1879         *pkeygen_init = pmeth->keygen_init;
1880     if (pkeygen)
1881         *pkeygen = pmeth->keygen;
1882 }
1883
1884 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1885                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1886                             int (**psign) (EVP_PKEY_CTX *ctx,
1887                                            unsigned char *sig, size_t *siglen,
1888                                            const unsigned char *tbs,
1889                                            size_t tbslen))
1890 {
1891     if (psign_init)
1892         *psign_init = pmeth->sign_init;
1893     if (psign)
1894         *psign = pmeth->sign;
1895 }
1896
1897 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1898                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1899                               int (**pverify) (EVP_PKEY_CTX *ctx,
1900                                                const unsigned char *sig,
1901                                                size_t siglen,
1902                                                const unsigned char *tbs,
1903                                                size_t tbslen))
1904 {
1905     if (pverify_init)
1906         *pverify_init = pmeth->verify_init;
1907     if (pverify)
1908         *pverify = pmeth->verify;
1909 }
1910
1911 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1912                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1913                                                                     *ctx),
1914                                       int (**pverify_recover) (EVP_PKEY_CTX
1915                                                                *ctx,
1916                                                                unsigned char
1917                                                                *sig,
1918                                                                size_t *siglen,
1919                                                                const unsigned
1920                                                                char *tbs,
1921                                                                size_t tbslen))
1922 {
1923     if (pverify_recover_init)
1924         *pverify_recover_init = pmeth->verify_recover_init;
1925     if (pverify_recover)
1926         *pverify_recover = pmeth->verify_recover;
1927 }
1928
1929 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1930                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1931                                                       EVP_MD_CTX *mctx),
1932                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1933                                                  unsigned char *sig,
1934                                                  size_t *siglen,
1935                                                  EVP_MD_CTX *mctx))
1936 {
1937     if (psignctx_init)
1938         *psignctx_init = pmeth->signctx_init;
1939     if (psignctx)
1940         *psignctx = pmeth->signctx;
1941 }
1942
1943 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1944                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1945                                                           EVP_MD_CTX *mctx),
1946                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1947                                                      const unsigned char *sig,
1948                                                      int siglen,
1949                                                      EVP_MD_CTX *mctx))
1950 {
1951     if (pverifyctx_init)
1952         *pverifyctx_init = pmeth->verifyctx_init;
1953     if (pverifyctx)
1954         *pverifyctx = pmeth->verifyctx;
1955 }
1956
1957 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1958                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1959                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1960                                                    unsigned char *out,
1961                                                    size_t *outlen,
1962                                                    const unsigned char *in,
1963                                                    size_t inlen))
1964 {
1965     if (pencrypt_init)
1966         *pencrypt_init = pmeth->encrypt_init;
1967     if (pencryptfn)
1968         *pencryptfn = pmeth->encrypt;
1969 }
1970
1971 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1972                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1973                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1974                                                  unsigned char *out,
1975                                                  size_t *outlen,
1976                                                  const unsigned char *in,
1977                                                  size_t inlen))
1978 {
1979     if (pdecrypt_init)
1980         *pdecrypt_init = pmeth->decrypt_init;
1981     if (pdecrypt)
1982         *pdecrypt = pmeth->decrypt;
1983 }
1984
1985 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1986                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1987                               int (**pderive) (EVP_PKEY_CTX *ctx,
1988                                                unsigned char *key,
1989                                                size_t *keylen))
1990 {
1991     if (pderive_init)
1992         *pderive_init = pmeth->derive_init;
1993     if (pderive)
1994         *pderive = pmeth->derive;
1995 }
1996
1997 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1998                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1999                                            void *p2),
2000                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2001                                                const char *type,
2002                                                const char *value))
2003 {
2004     if (pctrl)
2005         *pctrl = pmeth->ctrl;
2006     if (pctrl_str)
2007         *pctrl_str = pmeth->ctrl_str;
2008 }
2009
2010 void EVP_PKEY_meth_get_digestsign(const EVP_PKEY_METHOD *pmeth,
2011     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2012                         const unsigned char *tbs, size_t tbslen))
2013 {
2014     if (digestsign)
2015         *digestsign = pmeth->digestsign;
2016 }
2017
2018 void EVP_PKEY_meth_get_digestverify(const EVP_PKEY_METHOD *pmeth,
2019     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2020                           size_t siglen, const unsigned char *tbs,
2021                           size_t tbslen))
2022 {
2023     if (digestverify)
2024         *digestverify = pmeth->digestverify;
2025 }
2026
2027 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2028                              int (**pcheck) (EVP_PKEY *pkey))
2029 {
2030     if (pcheck != NULL)
2031         *pcheck = pmeth->check;
2032 }
2033
2034 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2035                                     int (**pcheck) (EVP_PKEY *pkey))
2036 {
2037     if (pcheck != NULL)
2038         *pcheck = pmeth->public_check;
2039 }
2040
2041 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2042                                    int (**pcheck) (EVP_PKEY *pkey))
2043 {
2044     if (pcheck != NULL)
2045         *pcheck = pmeth->param_check;
2046 }
2047
2048 void EVP_PKEY_meth_get_digest_custom(const EVP_PKEY_METHOD *pmeth,
2049                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2050                                                              EVP_MD_CTX *mctx))
2051 {
2052     if (pdigest_custom != NULL)
2053         *pdigest_custom = pmeth->digest_custom;
2054 }
2055
2056 #endif /* FIPS_MODULE */