crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2021 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 #include <openssl/engine.h>
  19 #include <openssl/evp.h>
  20 #include <openssl/x509v3.h>
  21 #include <openssl/core_names.h>
  22 #include <openssl/dh.h>
  23 #include <openssl/rsa.h>
  24 #include <openssl/kdf.h>
  25 #include "internal/cryptlib.h"
  26 #include "crypto/asn1.h"
  27 #include "crypto/evp.h"
  28 #include "crypto/dh.h"
  29 #include "crypto/ec.h"
  30 #include "internal/ffc.h"
  31 #include "internal/numbers.h"
  32 #include "internal/provider.h"
  33 #include "evp_local.h"
  34
  35 #ifndef FIPS_MODULE
  36
  37 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
  38                                           int keytype, int optype,
  39                                           int cmd, const char *name,
  40                                           const void *data, size_t data_len);
  41 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
  42                                           int cmd, const char *name);
  43 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
  44
  45 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  46 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  47
  48 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  49
  50 /* This array needs to be in order of NIDs */
  51 static pmeth_fn standard_methods[] = {
  52     ossl_rsa_pkey_method,
  53 # ifndef OPENSSL_NO_DH
  54     ossl_dh_pkey_method,
  55 # endif
  56 # ifndef OPENSSL_NO_DSA
  57     ossl_dsa_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_EC
  60     ossl_ec_pkey_method,
  61 # endif
  62     ossl_rsa_pss_pkey_method,
  63 # ifndef OPENSSL_NO_DH
  64     ossl_dhx_pkey_method,
  65 # endif
  66 # ifndef OPENSSL_NO_EC
  67     ossl_ecx25519_pkey_method,
  68     ossl_ecx448_pkey_method,
  69 # endif
  70 # ifndef OPENSSL_NO_EC
  71     ossl_ed25519_pkey_method,
  72     ossl_ed448_pkey_method,
  73 # endif
  74 };
  75
  76 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  77
  78 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  79 {
  80     return ((*a)->pkey_id - ((**b)())->pkey_id);
  81 }
  82
  83 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  84
  85 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  86                      const EVP_PKEY_METHOD *const *b)
  87 {
  88     return ((*a)->pkey_id - (*b)->pkey_id);
  89 }
  90
  91 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
  92 {
  93     if (app_pkey_methods != NULL) {
  94         int idx;
  95         EVP_PKEY_METHOD tmp;
  96
  97         tmp.pkey_id = type;
  98         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  99         if (idx >= 0)
 100             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 101     }
 102     return NULL;
 103 }
 104
 105 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 106 {
 107     pmeth_fn *ret;
 108     EVP_PKEY_METHOD tmp;
 109     const EVP_PKEY_METHOD *t;
 110
 111     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
 112         return t;
 113
 114     tmp.pkey_id = type;
 115     t = &tmp;
 116     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 117                                  OSSL_NELEM(standard_methods));
 118     if (ret == NULL || *ret == NULL)
 119         return NULL;
 120     return (**ret)();
 121 }
 122
 123 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 124 {
 125     EVP_PKEY_METHOD *pmeth;
 126
 127     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 128     if (pmeth == NULL) {
 129         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 130         return NULL;
 131     }
 132
 133     pmeth->pkey_id = id;
 134     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 135     return pmeth;
 136 }
 137
 138 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 139                                                   void *arg)
 140 {
 141     int *type = arg;
 142
 143     if (*type == NID_undef)
 144         *type = evp_pkey_name2type(keytype);
 145 }
 146
 147 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 148 {
 149     int type = NID_undef;
 150
 151     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 152                              &type);
 153     return type;
 154 }
 155 #endif /* FIPS_MODULE */
 156
 157 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
 158 {
 159     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 160         return EVP_PKEY_STATE_UNKNOWN;
 161
 162     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 163          && ctx->op.kex.exchprovctx != NULL)
 164         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 165             && ctx->op.sig.sigprovctx != NULL)
 166         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 167             && ctx->op.ciph.ciphprovctx != NULL)
 168         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 169             && ctx->op.keymgmt.genctx != NULL)
 170         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 171             && ctx->op.encap.kemprovctx != NULL))
 172         return EVP_PKEY_STATE_PROVIDER;
 173
 174     return EVP_PKEY_STATE_LEGACY;
 175 }
 176
 177 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 178                                  EVP_PKEY *pkey, ENGINE *e,
 179                                  const char *keytype, const char *propquery,
 180                                  int id)
 181
 182 {
 183     EVP_PKEY_CTX *ret = NULL;
 184     const EVP_PKEY_METHOD *pmeth = NULL;
 185     EVP_KEYMGMT *keymgmt = NULL;
 186
 187     /*
 188      * If the given |pkey| is provided, we extract the keytype from its
 189      * keymgmt and skip over the legacy code.
 190      */
 191     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 192         /* If we have an engine, something went wrong somewhere... */
 193         if (!ossl_assert(e == NULL))
 194             return NULL;
 195         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 196         goto common;
 197     }
 198
 199 #ifndef FIPS_MODULE
 200     /* Code below to be removed when legacy support is dropped. */
 201     /* BEGIN legacy */
 202     if (id == -1) {
 203         if (pkey != NULL)
 204             id = pkey->type;
 205         else if (keytype != NULL)
 206             id = evp_pkey_name2type(keytype);
 207         if (id == NID_undef)
 208             id = -1;
 209     }
 210     /* If no ID was found here, we can only resort to find a keymgmt */
 211     if (id == -1)
 212         goto common;
 213
 214     /*
 215      * Here, we extract what information we can for the purpose of
 216      * supporting usage with implementations from providers, to make
 217      * for a smooth transition from legacy stuff to provider based stuff.
 218      *
 219      * If an engine is given, this is entirely legacy, and we should not
 220      * pretend anything else, so we only set the name when no engine is
 221      * given.  If both are already given, someone made a mistake, and
 222      * since that can only happen internally, it's safe to make an
 223      * assertion.
 224      */
 225     if (!ossl_assert(e == NULL || keytype == NULL))
 226         return NULL;
 227     if (e == NULL)
 228         keytype = OBJ_nid2sn(id);
 229
 230 # ifndef OPENSSL_NO_ENGINE
 231     if (e == NULL && pkey != NULL)
 232         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 233     /* Try to find an ENGINE which implements this method */
 234     if (e) {
 235         if (!ENGINE_init(e)) {
 236             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 237             return NULL;
 238         }
 239     } else {
 240         e = ENGINE_get_pkey_meth_engine(id);
 241     }
 242
 243     /*
 244      * If an ENGINE handled this method look it up. Otherwise use internal
 245      * tables.
 246      */
 247     if (e != NULL)
 248         pmeth = ENGINE_get_pkey_meth(e, id);
 249     else
 250 # endif
 251         pmeth = evp_pkey_meth_find_added_by_application(id);
 252
 253     /* END legacy */
 254 #endif /* FIPS_MODULE */
 255  common:
 256     /*
 257      * If there's no engine and there's a name, we try fetching a provider
 258      * implementation.
 259      */
 260     if (e == NULL && keytype != NULL) {
 261         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 262         if (keymgmt == NULL)
 263             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 264
 265 #ifndef FIPS_MODULE
 266         /*
 267          * Chase down the legacy NID, as that might be needed for diverse
 268          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 269          * values, or that there's a better chance to "downgrade" a key when
 270          * needed.  We go through all keymgmt names, because the keytype
 271          * that's passed to this function doesn't necessarily translate
 272          * directly.
 273          * TODO: Remove this when #legacy keys are gone.
 274          */
 275         if (keymgmt != NULL) {
 276             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 277
 278             if (tmp_id != NID_undef) {
 279                 if (id == -1) {
 280                     id = tmp_id;
 281                 } else {
 282                     /*
 283                      * It really really shouldn't differ.  If it still does,
 284                      * something is very wrong.
 285                      */
 286                     if (!ossl_assert(id == tmp_id)) {
 287                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 288                         EVP_KEYMGMT_free(keymgmt);
 289                         return NULL;
 290                     }
 291                 }
 292             }
 293         }
 294 #endif
 295     }
 296
 297     if (pmeth == NULL && keymgmt == NULL) {
 298         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 299     } else {
 300         ret = OPENSSL_zalloc(sizeof(*ret));
 301         if (ret == NULL)
 302             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 303     }
 304
 305 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 306     if ((ret == NULL || pmeth == NULL) && e != NULL)
 307         ENGINE_finish(e);
 308 #endif
 309
 310     if (ret == NULL) {
 311         EVP_KEYMGMT_free(keymgmt);
 312         return NULL;
 313     }
 314     if (propquery != NULL) {
 315         ret->propquery = OPENSSL_strdup(propquery);
 316         if (ret->propquery == NULL) {
 317             EVP_KEYMGMT_free(keymgmt);
 318             return NULL;
 319         }
 320     }
 321     ret->libctx = libctx;
 322     ret->keytype = keytype;
 323     ret->keymgmt = keymgmt;
 324     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 325     ret->engine = e;
 326     ret->pmeth = pmeth;
 327     ret->operation = EVP_PKEY_OP_UNDEFINED;
 328     ret->pkey = pkey;
 329     if (pkey != NULL)
 330         EVP_PKEY_up_ref(pkey);
 331
 332     if (pmeth != NULL && pmeth->init != NULL) {
 333         if (pmeth->init(ret) <= 0) {
 334             ret->pmeth = NULL;
 335             EVP_PKEY_CTX_free(ret);
 336             return NULL;
 337         }
 338     }
 339
 340     return ret;
 341 }
 342
 343 /*- All methods below can also be used in FIPS_MODULE */
 344
 345 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 346                                          const char *name,
 347                                          const char *propquery)
 348 {
 349     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 350 }
 351
 352 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 353                                          const char *propquery)
 354 {
 355     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 356 }
 357
 358 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 359 {
 360     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 361         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 362             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 363         EVP_SIGNATURE_free(ctx->op.sig.signature);
 364         ctx->op.sig.sigprovctx = NULL;
 365         ctx->op.sig.signature = NULL;
 366     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 367         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 368             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 369         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 370         ctx->op.kex.exchprovctx = NULL;
 371         ctx->op.kex.exchange = NULL;
 372     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 373         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 374             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 375         EVP_KEM_free(ctx->op.encap.kem);
 376         ctx->op.encap.kemprovctx = NULL;
 377         ctx->op.encap.kem = NULL;
 378     }
 379     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 380         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 381             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 382         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 383         ctx->op.ciph.ciphprovctx = NULL;
 384         ctx->op.ciph.cipher = NULL;
 385     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 386         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 387             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 388     }
 389 }
 390
 391 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 392 {
 393     if (ctx == NULL)
 394         return;
 395     if (ctx->pmeth && ctx->pmeth->cleanup)
 396         ctx->pmeth->cleanup(ctx);
 397
 398     evp_pkey_ctx_free_old_ops(ctx);
 399 #ifndef FIPS_MODULE
 400     evp_pkey_ctx_free_all_cached_data(ctx);
 401 #endif
 402     EVP_KEYMGMT_free(ctx->keymgmt);
 403
 404     OPENSSL_free(ctx->propquery);
 405     EVP_PKEY_free(ctx->pkey);
 406     EVP_PKEY_free(ctx->peerkey);
 407 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 408     ENGINE_finish(ctx->engine);
 409 #endif
 410     BN_free(ctx->rsa_pubexp);
 411     OPENSSL_free(ctx);
 412 }
 413
 414 #ifndef FIPS_MODULE
 415
 416 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 417                              const EVP_PKEY_METHOD *meth)
 418 {
 419     if (ppkey_id)
 420         *ppkey_id = meth->pkey_id;
 421     if (pflags)
 422         *pflags = meth->flags;
 423 }
 424
 425 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 426 {
 427     int pkey_id = dst->pkey_id;
 428     int flags = dst->flags;
 429
 430     *dst = *src;
 431
 432     /* We only copy the function pointers so restore the other values */
 433     dst->pkey_id = pkey_id;
 434     dst->flags = flags;
 435 }
 436
 437 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 438 {
 439     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 440         OPENSSL_free(pmeth);
 441 }
 442
 443 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 444 {
 445     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 446 }
 447
 448 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 449 {
 450     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 451 }
 452
 453 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 454 {
 455     EVP_PKEY_CTX *rctx;
 456
 457 # ifndef OPENSSL_NO_ENGINE
 458     /* Make sure it's safe to copy a pkey context using an ENGINE */
 459     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 460         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 461         return 0;
 462     }
 463 # endif
 464     rctx = OPENSSL_zalloc(sizeof(*rctx));
 465     if (rctx == NULL) {
 466         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 467         return NULL;
 468     }
 469
 470     if (pctx->pkey != NULL)
 471         EVP_PKEY_up_ref(pctx->pkey);
 472     rctx->pkey = pctx->pkey;
 473     rctx->operation = pctx->operation;
 474     rctx->libctx = pctx->libctx;
 475     rctx->keytype = pctx->keytype;
 476     rctx->propquery = NULL;
 477     if (pctx->propquery != NULL) {
 478         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 479         if (rctx->propquery == NULL)
 480             goto err;
 481     }
 482     rctx->legacy_keytype = pctx->legacy_keytype;
 483
 484     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 485         if (pctx->op.kex.exchange != NULL) {
 486             rctx->op.kex.exchange = pctx->op.kex.exchange;
 487             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 488                 goto err;
 489         }
 490         if (pctx->op.kex.exchprovctx != NULL) {
 491             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 492                 goto err;
 493             rctx->op.kex.exchprovctx
 494                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 495             if (rctx->op.kex.exchprovctx == NULL) {
 496                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 497                 goto err;
 498             }
 499             return rctx;
 500         }
 501     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 502         if (pctx->op.sig.signature != NULL) {
 503             rctx->op.sig.signature = pctx->op.sig.signature;
 504             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 505                 goto err;
 506         }
 507         if (pctx->op.sig.sigprovctx != NULL) {
 508             if (!ossl_assert(pctx->op.sig.signature != NULL))
 509                 goto err;
 510             rctx->op.sig.sigprovctx
 511                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 512             if (rctx->op.sig.sigprovctx == NULL) {
 513                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 514                 goto err;
 515             }
 516             return rctx;
 517         }
 518     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 519         if (pctx->op.ciph.cipher != NULL) {
 520             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 521             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 522                 goto err;
 523         }
 524         if (pctx->op.ciph.ciphprovctx != NULL) {
 525             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 526                 goto err;
 527             rctx->op.ciph.ciphprovctx
 528                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 529             if (rctx->op.ciph.ciphprovctx == NULL) {
 530                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 531                 goto err;
 532             }
 533             return rctx;
 534         }
 535     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 536         if (pctx->op.encap.kem != NULL) {
 537             rctx->op.encap.kem = pctx->op.encap.kem;
 538             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 539                 goto err;
 540         }
 541         if (pctx->op.encap.kemprovctx != NULL) {
 542             if (!ossl_assert(pctx->op.encap.kem != NULL))
 543                 goto err;
 544             rctx->op.encap.kemprovctx
 545                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 546             if (rctx->op.encap.kemprovctx == NULL) {
 547                 EVP_KEM_free(rctx->op.encap.kem);
 548                 goto err;
 549             }
 550             return rctx;
 551         }
 552     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 553         /* Not supported - This would need a gen_dupctx() to work */
 554         goto err;
 555     }
 556
 557     rctx->pmeth = pctx->pmeth;
 558 # ifndef OPENSSL_NO_ENGINE
 559     rctx->engine = pctx->engine;
 560 # endif
 561
 562     if (pctx->peerkey != NULL)
 563         EVP_PKEY_up_ref(pctx->peerkey);
 564     rctx->peerkey = pctx->peerkey;
 565
 566     if (pctx->pmeth == NULL) {
 567         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 568             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 569             void *provkey;
 570
 571             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 572                                                   &tmp_keymgmt, pctx->propquery);
 573             if (provkey == NULL)
 574                 goto err;
 575             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 576                 goto err;
 577             EVP_KEYMGMT_free(rctx->keymgmt);
 578             rctx->keymgmt = tmp_keymgmt;
 579             return rctx;
 580         }
 581     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 582         return rctx;
 583     }
 584 err:
 585     rctx->pmeth = NULL;
 586     EVP_PKEY_CTX_free(rctx);
 587     return NULL;
 588 }
 589
 590 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 591 {
 592     if (app_pkey_methods == NULL) {
 593         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 594         if (app_pkey_methods == NULL){
 595             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 596             return 0;
 597         }
 598     }
 599     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 600         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 601         return 0;
 602     }
 603     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 604     return 1;
 605 }
 606
 607 void evp_app_cleanup_int(void)
 608 {
 609     if (app_pkey_methods != NULL)
 610         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 611 }
 612
 613 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 614 {
 615     const EVP_PKEY_METHOD *ret;
 616
 617     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 618
 619     return ret == NULL ? 0 : 1;
 620 }
 621
 622 size_t EVP_PKEY_meth_get_count(void)
 623 {
 624     size_t rv = OSSL_NELEM(standard_methods);
 625
 626     if (app_pkey_methods)
 627         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 628     return rv;
 629 }
 630
 631 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 632 {
 633     if (idx < OSSL_NELEM(standard_methods))
 634         return (standard_methods[idx])();
 635     if (app_pkey_methods == NULL)
 636         return NULL;
 637     idx -= OSSL_NELEM(standard_methods);
 638     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 639         return NULL;
 640     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 641 }
 642 #endif
 643
 644 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
 645 {
 646 #ifndef FIPS_MODULE
 647     if (evp_pkey_ctx_is_legacy(ctx))
 648         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
 649 #endif
 650     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
 651 }
 652
 653 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 654 {
 655     switch (evp_pkey_ctx_state(ctx)) {
 656     case EVP_PKEY_STATE_PROVIDER:
 657         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 658             && ctx->op.kex.exchange != NULL
 659             && ctx->op.kex.exchange->set_ctx_params != NULL)
 660             return
 661                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 662                                                      params);
 663         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 664             && ctx->op.sig.signature != NULL
 665             && ctx->op.sig.signature->set_ctx_params != NULL)
 666             return
 667                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 668                                                       params);
 669         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 670             && ctx->op.ciph.cipher != NULL
 671             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 672             return
 673                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 674                                                     params);
 675         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 676             && ctx->keymgmt != NULL
 677             && ctx->keymgmt->gen_set_params != NULL)
 678             return
 679                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 680                                            params);
 681         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 682             && ctx->op.encap.kem != NULL
 683             && ctx->op.encap.kem->set_ctx_params != NULL)
 684             return
 685                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 686                                                   params);
 687         break;
 688 #ifndef FIPS_MODULE
 689     case EVP_PKEY_STATE_UNKNOWN:
 690     case EVP_PKEY_STATE_LEGACY:
 691         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
 692 #endif
 693     }
 694     return 0;
 695 }
 696
 697 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 698 {
 699     switch (evp_pkey_ctx_state(ctx)) {
 700     case EVP_PKEY_STATE_PROVIDER:
 701         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 702             && ctx->op.kex.exchange != NULL
 703             && ctx->op.kex.exchange->get_ctx_params != NULL)
 704             return
 705                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 706                                                      params);
 707         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 708             && ctx->op.sig.signature != NULL
 709             && ctx->op.sig.signature->get_ctx_params != NULL)
 710             return
 711                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 712                                                       params);
 713         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 714             && ctx->op.ciph.cipher != NULL
 715             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 716             return
 717                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 718                                                     params);
 719         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 720             && ctx->op.encap.kem != NULL
 721             && ctx->op.encap.kem->get_ctx_params != NULL)
 722             return
 723                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 724                                                   params);
 725         break;
 726 #ifndef FIPS_MODULE
 727     case EVP_PKEY_STATE_UNKNOWN:
 728     case EVP_PKEY_STATE_LEGACY:
 729         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
 730 #endif
 731     }
 732     return 0;
 733 }
 734
 735 #ifndef FIPS_MODULE
 736 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 737 {
 738     void *provctx;
 739
 740     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 741             && ctx->op.kex.exchange != NULL
 742             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 743         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 744         return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.exchprovctx,
 745                                                          provctx);
 746     }
 747     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 748             && ctx->op.sig.signature != NULL
 749             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 750         provctx = ossl_provider_ctx(
 751                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 752         return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.sigprovctx,
 753                                                           provctx);
 754     }
 755     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 756             && ctx->op.ciph.cipher != NULL
 757             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 758         provctx = ossl_provider_ctx(
 759                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 760         return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.ciphprovctx,
 761                                                         provctx);
 762     }
 763     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 764         && ctx->op.encap.kem != NULL
 765         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 766         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 767         return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.kemprovctx,
 768                                                       provctx);
 769     }
 770     return NULL;
 771 }
 772
 773 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 774 {
 775     void *provctx;
 776
 777     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 778             && ctx->op.kex.exchange != NULL
 779             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 780         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 781         return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.exchprovctx,
 782                                                          provctx);
 783     }
 784     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 785             && ctx->op.sig.signature != NULL
 786             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 787         provctx = ossl_provider_ctx(
 788                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 789         return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.sigprovctx,
 790                                                           provctx);
 791     }
 792     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 793             && ctx->op.ciph.cipher != NULL
 794             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 795         provctx = ossl_provider_ctx(
 796                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 797         return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.ciphprovctx,
 798                                                         provctx);
 799     }
 800     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 801             && ctx->keymgmt != NULL
 802             && ctx->keymgmt->gen_settable_params != NULL) {
 803         provctx = ossl_provider_ctx(EVP_KEYMGMT_provider(ctx->keymgmt));
 804         return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
 805                                                  provctx);
 806     }
 807     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 808         && ctx->op.encap.kem != NULL
 809         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 810         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 811         return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.kemprovctx,
 812                                                       provctx);
 813     }
 814     return NULL;
 815 }
 816
 817 /*
 818  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 819  *
 820  * Return 1 on success, 0 or negative for errors.
 821  *
 822  * In particular they return -2 if any of the params is not supported.
 823  *
 824  * They are not available in FIPS_MODULE as they depend on
 825  *      - EVP_PKEY_CTX_{get,set}_params()
 826  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 827  *
 828  */
 829 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 830 {
 831     if (ctx == NULL || params == NULL)
 832         return 0;
 833
 834     /*
 835      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 836      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
 837      * call, and that the resulting ctrl call will return -2 if it doesn't
 838      * known the ctrl command number.
 839      */
 840     if (evp_pkey_ctx_is_provided(ctx)) {
 841         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 842         const OSSL_PARAM *p;
 843
 844         for (p = params; p->key != NULL; p++) {
 845             /* Check the ctx actually understands this parameter */
 846             if (OSSL_PARAM_locate_const(settable, p->key) == NULL )
 847                 return -2;
 848         }
 849     }
 850
 851     return EVP_PKEY_CTX_set_params(ctx, params);
 852 }
 853
 854 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 855 {
 856     if (ctx == NULL || params == NULL)
 857         return 0;
 858
 859     /*
 860      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 861      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
 862      * call, and that the resulting ctrl call will return -2 if it doesn't
 863      * known the ctrl command number.
 864      */
 865     if (evp_pkey_ctx_is_provided(ctx)) {
 866         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
 867         const OSSL_PARAM *p;
 868
 869         for (p = params; p->key != NULL; p++ ) {
 870             /* Check the ctx actually understands this parameter */
 871             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL )
 872                 return -2;
 873         }
 874     }
 875
 876     return EVP_PKEY_CTX_get_params(ctx, params);
 877 }
 878
 879 /* TODO(3.0): Deprecate in favour of get_signature_md_name */
 880 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 881 {
 882     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 883     /* 80 should be big enough */
 884     char name[80] = "";
 885     const EVP_MD *tmp;
 886
 887     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 888         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 889         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 890         return -2;
 891     }
 892
 893     if (ctx->op.sig.sigprovctx == NULL)
 894         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 895                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 896
 897     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 898                                             name,
 899                                             sizeof(name));
 900     *p = OSSL_PARAM_construct_end();
 901
 902     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 903         return 0;
 904
 905     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 906     if (tmp == NULL)
 907         return 0;
 908
 909     *md = tmp;
 910
 911     return 1;
 912 }
 913
 914 /*
 915  * TODO(3.0): Deprecate functions calling this in favour of
 916  * functions setting md name.
 917  */
 918 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 919                                int fallback, const char *param, int op,
 920                                int ctrl)
 921 {
 922     OSSL_PARAM md_params[2], *p = md_params;
 923     const char *name;
 924
 925     if (ctx == NULL || (ctx->operation & op) == 0) {
 926         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 927         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 928         return -2;
 929     }
 930
 931     if (fallback)
 932         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 933
 934     if (md == NULL) {
 935         name = "";
 936     } else {
 937         name = EVP_MD_name(md);
 938     }
 939
 940     *p++ = OSSL_PARAM_construct_utf8_string(param,
 941                                             /*
 942                                              * Cast away the const. This is read
 943                                              * only so should be safe
 944                                              */
 945                                             (char *)name, 0);
 946     *p = OSSL_PARAM_construct_end();
 947
 948     return EVP_PKEY_CTX_set_params(ctx, md_params);
 949 }
 950
 951 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 952 {
 953     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 954                                OSSL_SIGNATURE_PARAM_DIGEST,
 955                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 956 }
 957
 958 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 959 {
 960     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 961                                OSSL_KDF_PARAM_DIGEST,
 962                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 963 }
 964
 965 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 966                                           const char *param, int op, int ctrl,
 967                                           const unsigned char *data,
 968                                           int datalen)
 969 {
 970     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 971
 972     if (ctx == NULL || (ctx->operation & op) == 0) {
 973         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 974         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 975         return -2;
 976     }
 977
 978     /* Code below to be removed when legacy support is dropped. */
 979     if (fallback)
 980         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 981     /* end of legacy support */
 982
 983     if (datalen < 0) {
 984         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 985         return 0;
 986     }
 987
 988     *p++ = OSSL_PARAM_construct_octet_string(param,
 989                                             /*
 990                                              * Cast away the const. This is read
 991                                              * only so should be safe
 992                                              */
 993                                             (unsigned char *)data,
 994                                             (size_t)datalen);
 995     *p = OSSL_PARAM_construct_end();
 996
 997     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 998 }
 999
1000 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1001                                       const unsigned char *sec, int seclen)
1002 {
1003     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1004                                           OSSL_KDF_PARAM_SECRET,
1005                                           EVP_PKEY_OP_DERIVE,
1006                                           EVP_PKEY_CTRL_TLS_SECRET,
1007                                           sec, seclen);
1008 }
1009
1010 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1011                                     const unsigned char *seed, int seedlen)
1012 {
1013     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1014                                           OSSL_KDF_PARAM_SEED,
1015                                           EVP_PKEY_OP_DERIVE,
1016                                           EVP_PKEY_CTRL_TLS_SEED,
1017                                           seed, seedlen);
1018 }
1019
1020 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1021 {
1022     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
1023                                OSSL_KDF_PARAM_DIGEST,
1024                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1025 }
1026
1027 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1028                                 const unsigned char *salt, int saltlen)
1029 {
1030     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1031                                           OSSL_KDF_PARAM_SALT,
1032                                           EVP_PKEY_OP_DERIVE,
1033                                           EVP_PKEY_CTRL_HKDF_SALT,
1034                                           salt, saltlen);
1035 }
1036
1037 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1038                                       const unsigned char *key, int keylen)
1039 {
1040     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1041                                           OSSL_KDF_PARAM_KEY,
1042                                           EVP_PKEY_OP_DERIVE,
1043                                           EVP_PKEY_CTRL_HKDF_KEY,
1044                                           key, keylen);
1045 }
1046
1047 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1048                                       const unsigned char *info, int infolen)
1049 {
1050     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1051                                           OSSL_KDF_PARAM_INFO,
1052                                           EVP_PKEY_OP_DERIVE,
1053                                           EVP_PKEY_CTRL_HKDF_INFO,
1054                                           info, infolen);
1055 }
1056
1057 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1058 {
1059     OSSL_PARAM int_params[2], *p = int_params;
1060
1061     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1062         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1063         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1064         return -2;
1065     }
1066
1067     /* Code below to be removed when legacy support is dropped. */
1068     if (ctx->op.kex.exchprovctx == NULL)
1069         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1070                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1071     /* end of legacy support */
1072
1073     if (mode < 0) {
1074         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1075         return 0;
1076     }
1077
1078     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1079     *p = OSSL_PARAM_construct_end();
1080
1081     return EVP_PKEY_CTX_set_params(ctx, int_params);
1082 }
1083
1084 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1085                                int passlen)
1086 {
1087     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1088                                           OSSL_KDF_PARAM_PASSWORD,
1089                                           EVP_PKEY_OP_DERIVE,
1090                                           EVP_PKEY_CTRL_PASS,
1091                                           (const unsigned char *)pass, passlen);
1092 }
1093
1094 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1095                                   const unsigned char *salt, int saltlen)
1096 {
1097     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1098                                           OSSL_KDF_PARAM_SALT,
1099                                           EVP_PKEY_OP_DERIVE,
1100                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1101                                           salt, saltlen);
1102 }
1103
1104 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1105                                    int op, int ctrl, uint64_t val)
1106 {
1107     OSSL_PARAM uint64_params[2], *p = uint64_params;
1108
1109     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1110         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1111         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1112         return -2;
1113     }
1114
1115     /* Code below to be removed when legacy support is dropped. */
1116     if (ctx->op.kex.exchprovctx == NULL)
1117         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1118     /* end of legacy support */
1119
1120     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1121     *p = OSSL_PARAM_construct_end();
1122
1123     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1124 }
1125
1126 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1127 {
1128     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1129                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1130                                    n);
1131 }
1132
1133 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1134 {
1135     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1136                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1137                                    r);
1138 }
1139
1140 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1141 {
1142     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1143                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1144                                    p);
1145 }
1146
1147 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1148                                          uint64_t maxmem_bytes)
1149 {
1150     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1151                                    EVP_PKEY_OP_DERIVE,
1152                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1153                                    maxmem_bytes);
1154 }
1155
1156 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1157                              int keylen)
1158 {
1159     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1160                                           OSSL_PKEY_PARAM_PRIV_KEY,
1161                                           EVP_PKEY_OP_KEYGEN,
1162                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1163                                           key, keylen);
1164 }
1165
1166 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1167 {
1168     OSSL_PARAM params[2], *p = params;
1169
1170     if (ctx == NULL || op == NULL) {
1171         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1172         return 0;
1173     }
1174     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1175         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1176         return -2;
1177     }
1178     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1179                                             (char *)op, 0);
1180     *p = OSSL_PARAM_construct_end();
1181     return EVP_PKEY_CTX_set_params(ctx, params);
1182 }
1183
1184 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1185 {
1186     OSSL_PARAM params[2], *p = params;
1187     int ret;
1188
1189     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1190         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1191         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1192         return -2;
1193     }
1194
1195     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1196                                              /*
1197                                               * Cast away the const. This is
1198                                               * read only so should be safe
1199                                               */
1200                                              (void *)id, (size_t)len);
1201     *p++ = OSSL_PARAM_construct_end();
1202
1203     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1204     if (ret == -2)
1205         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1206     return ret;
1207 }
1208
1209 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1210 {
1211     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1212                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1213 }
1214
1215 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1216 {
1217     int ret;
1218     void *tmp_id = NULL;
1219     OSSL_PARAM params[2], *p = params;
1220
1221     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1222         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1223         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1224         return -2;
1225     }
1226
1227     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1228                                           &tmp_id, 0);
1229     *p++ = OSSL_PARAM_construct_end();
1230
1231     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1232     if (ret == -2) {
1233         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1234     } else if (ret > 0) {
1235         size_t tmp_id_len = params[0].return_size;
1236
1237         if (id != NULL)
1238             memcpy(id, tmp_id, tmp_id_len);
1239         if (id_len != NULL)
1240             *id_len = tmp_id_len;
1241     }
1242     return ret;
1243 }
1244
1245 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1246 {
1247     return get1_id_data(ctx, id, NULL);
1248 }
1249
1250 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1251 {
1252     return get1_id_data(ctx, NULL, id_len);
1253 }
1254
1255 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1256 {
1257     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1258 }
1259
1260 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1261 {
1262     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1263                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1264 }
1265
1266 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1267                                  int cmd, int p1, void *p2)
1268 {
1269     int ret = 0;
1270
1271     /*
1272      * If the method has a |digest_custom| function, we can relax the
1273      * operation type check, since this can be called before the operation
1274      * is initialized.
1275      */
1276     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1277         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1278             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1279             return -1;
1280         }
1281
1282         if ((optype != -1) && !(ctx->operation & optype)) {
1283             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1284             return -1;
1285         }
1286     }
1287
1288     switch (evp_pkey_ctx_state(ctx)) {
1289     case EVP_PKEY_STATE_PROVIDER:
1290         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1291     case EVP_PKEY_STATE_UNKNOWN:
1292     case EVP_PKEY_STATE_LEGACY:
1293         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1294             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1295             return -2;
1296         }
1297         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1298             return -1;
1299
1300         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1301
1302         if (ret == -2)
1303             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1304         break;
1305     }
1306     return ret;
1307 }
1308
1309 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1310                       int cmd, int p1, void *p2)
1311 {
1312     int ret = 0;
1313
1314     if (ctx == NULL) {
1315         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1316         return -2;
1317     }
1318     /* If unsupported, we don't want that reported here */
1319     ERR_set_mark();
1320     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1321                                          cmd, NULL, p2, p1);
1322     if (ret == -2) {
1323         ERR_pop_to_mark();
1324     } else {
1325         ERR_clear_last_mark();
1326         /*
1327          * If there was an error, there was an error.
1328          * If the operation isn't initialized yet, we also return, as
1329          * the saved values will be used then anyway.
1330          */
1331         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1332             return ret;
1333     }
1334     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1335 }
1336
1337 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1338                              int cmd, uint64_t value)
1339 {
1340     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1341 }
1342
1343
1344 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1345                                      const char *name, const char *value)
1346 {
1347     int ret = 0;
1348
1349     if (ctx == NULL) {
1350         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1351         return -2;
1352     }
1353
1354     switch (evp_pkey_ctx_state(ctx)) {
1355     case EVP_PKEY_STATE_PROVIDER:
1356         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1357     case EVP_PKEY_STATE_UNKNOWN:
1358     case EVP_PKEY_STATE_LEGACY:
1359         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1360             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1361             return -2;
1362         }
1363         if (strcmp(name, "digest") == 0)
1364             ret = EVP_PKEY_CTX_md(ctx,
1365                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1366                                   EVP_PKEY_CTRL_MD, value);
1367         else
1368             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1369         break;
1370     }
1371
1372     return ret;
1373 }
1374
1375 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1376                           const char *name, const char *value)
1377 {
1378     int ret = 0;
1379
1380     /* If unsupported, we don't want that reported here */
1381     ERR_set_mark();
1382     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1383                                          name, value, strlen(value) + 1);
1384     if (ret == -2) {
1385         ERR_pop_to_mark();
1386     } else {
1387         ERR_clear_last_mark();
1388         /*
1389          * If there was an error, there was an error.
1390          * If the operation isn't initialized yet, we also return, as
1391          * the saved values will be used then anyway.
1392          */
1393         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1394             return ret;
1395     }
1396
1397     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1398 }
1399
1400 static int decode_cmd(int cmd, const char *name)
1401 {
1402     if (cmd == -1) {
1403         /*
1404          * The consequence of the assertion not being true is that this
1405          * function will return -1, which will cause the calling functions
1406          * to signal that the command is unsupported...  in non-debug mode.
1407          */
1408         if (ossl_assert(name != NULL))
1409             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1410                 cmd = EVP_PKEY_CTRL_SET1_ID;
1411     }
1412
1413     return cmd;
1414 }
1415
1416 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1417                                           int keytype, int optype,
1418                                           int cmd, const char *name,
1419                                           const void *data, size_t data_len)
1420 {
1421     /*
1422      * Check that it's one of the supported commands.  The ctrl commands
1423      * number cases here must correspond to the cases in the bottom switch
1424      * in this function.
1425      */
1426     switch (cmd = decode_cmd(cmd, name)) {
1427     case EVP_PKEY_CTRL_SET1_ID:
1428         break;
1429     default:
1430         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1431         return -2;
1432     }
1433
1434     if (keytype != -1) {
1435         switch (evp_pkey_ctx_state(ctx)) {
1436         case EVP_PKEY_STATE_PROVIDER:
1437             if (ctx->keymgmt == NULL) {
1438                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1439                 return -2;
1440             }
1441             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1442                                   evp_pkey_type2name(keytype))) {
1443                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1444                 return -1;
1445             }
1446             break;
1447         case EVP_PKEY_STATE_UNKNOWN:
1448         case EVP_PKEY_STATE_LEGACY:
1449             if (ctx->pmeth == NULL) {
1450                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1451                 return -2;
1452             }
1453             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1454                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1455                 return -1;
1456             }
1457             break;
1458         }
1459     }
1460     if (optype != -1 && (ctx->operation & optype) == 0) {
1461         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1462         return -1;
1463     }
1464
1465     switch (cmd) {
1466     case EVP_PKEY_CTRL_SET1_ID:
1467         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1468         if (name != NULL) {
1469             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1470             if (ctx->cached_parameters.dist_id_name == NULL) {
1471                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1472                 return 0;
1473             }
1474         }
1475         if (data_len > 0) {
1476             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1477             if (ctx->cached_parameters.dist_id == NULL) {
1478                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1479                 return 0;
1480             }
1481         }
1482         ctx->cached_parameters.dist_id_set = 1;
1483         ctx->cached_parameters.dist_id_len = data_len;
1484         break;
1485     }
1486     return 1;
1487 }
1488
1489 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1490                                           int cmd, const char *name)
1491 {
1492     cmd = decode_cmd(cmd, name);
1493     switch (cmd) {
1494     case EVP_PKEY_CTRL_SET1_ID:
1495         OPENSSL_free(ctx->cached_parameters.dist_id);
1496         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1497         ctx->cached_parameters.dist_id = NULL;
1498         ctx->cached_parameters.dist_id_name = NULL;
1499         break;
1500     }
1501 }
1502
1503 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1504 {
1505     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1506 }
1507
1508 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1509 {
1510     int ret = 1;
1511
1512     if (ret && ctx->cached_parameters.dist_id_set) {
1513         const char *name = ctx->cached_parameters.dist_id_name;
1514         const void *val = ctx->cached_parameters.dist_id;
1515         size_t len = ctx->cached_parameters.dist_id_len;
1516
1517         if (name != NULL)
1518             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1519         else
1520             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1521                                         EVP_PKEY_CTRL_SET1_ID,
1522                                         (int)len, (void *)val);
1523     }
1524
1525     return ret;
1526 }
1527
1528 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1529 {
1530     return ctx->libctx;
1531 }
1532
1533 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1534 {
1535     return ctx->propquery;
1536 }
1537
1538 /* Utility functions to send a string of hex string to a ctrl */
1539
1540 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1541 {
1542     size_t len;
1543
1544     len = strlen(str);
1545     if (len > INT_MAX)
1546         return -1;
1547     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1548 }
1549
1550 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1551 {
1552     unsigned char *bin;
1553     long binlen;
1554     int rv = -1;
1555
1556     bin = OPENSSL_hexstr2buf(hex, &binlen);
1557     if (bin == NULL)
1558         return 0;
1559     if (binlen <= INT_MAX)
1560         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1561     OPENSSL_free(bin);
1562     return rv;
1563 }
1564
1565 /* Pass a message digest to a ctrl */
1566 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1567 {
1568     const EVP_MD *m;
1569
1570     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1571         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1572         return 0;
1573     }
1574     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1575 }
1576
1577 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1578 {
1579     return ctx->operation;
1580 }
1581
1582 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1583 {
1584     ctx->keygen_info = dat;
1585     ctx->keygen_info_count = datlen;
1586 }
1587
1588 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1589 {
1590     ctx->data = data;
1591 }
1592
1593 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1594 {
1595     return ctx->data;
1596 }
1597
1598 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1599 {
1600     return ctx->pkey;
1601 }
1602
1603 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1604 {
1605     return ctx->peerkey;
1606 }
1607
1608 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1609 {
1610     ctx->app_data = data;
1611 }
1612
1613 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1614 {
1615     return ctx->app_data;
1616 }
1617
1618 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1619                             int (*init) (EVP_PKEY_CTX *ctx))
1620 {
1621     pmeth->init = init;
1622 }
1623
1624 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1625                             int (*copy) (EVP_PKEY_CTX *dst,
1626                                          const EVP_PKEY_CTX *src))
1627 {
1628     pmeth->copy = copy;
1629 }
1630
1631 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1632                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1633 {
1634     pmeth->cleanup = cleanup;
1635 }
1636
1637 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1638                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1639                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1640                                                  EVP_PKEY *pkey))
1641 {
1642     pmeth->paramgen_init = paramgen_init;
1643     pmeth->paramgen = paramgen;
1644 }
1645
1646 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1647                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1648                               int (*keygen) (EVP_PKEY_CTX *ctx,
1649                                              EVP_PKEY *pkey))
1650 {
1651     pmeth->keygen_init = keygen_init;
1652     pmeth->keygen = keygen;
1653 }
1654
1655 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1656                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1657                             int (*sign) (EVP_PKEY_CTX *ctx,
1658                                          unsigned char *sig, size_t *siglen,
1659                                          const unsigned char *tbs,
1660                                          size_t tbslen))
1661 {
1662     pmeth->sign_init = sign_init;
1663     pmeth->sign = sign;
1664 }
1665
1666 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1667                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1668                               int (*verify) (EVP_PKEY_CTX *ctx,
1669                                              const unsigned char *sig,
1670                                              size_t siglen,
1671                                              const unsigned char *tbs,
1672                                              size_t tbslen))
1673 {
1674     pmeth->verify_init = verify_init;
1675     pmeth->verify = verify;
1676 }
1677
1678 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1679                                       int (*verify_recover_init) (EVP_PKEY_CTX
1680                                                                   *ctx),
1681                                       int (*verify_recover) (EVP_PKEY_CTX
1682                                                              *ctx,
1683                                                              unsigned char
1684                                                              *sig,
1685                                                              size_t *siglen,
1686                                                              const unsigned
1687                                                              char *tbs,
1688                                                              size_t tbslen))
1689 {
1690     pmeth->verify_recover_init = verify_recover_init;
1691     pmeth->verify_recover = verify_recover;
1692 }
1693
1694 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1695                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1696                                                     EVP_MD_CTX *mctx),
1697                                int (*signctx) (EVP_PKEY_CTX *ctx,
1698                                                unsigned char *sig,
1699                                                size_t *siglen,
1700                                                EVP_MD_CTX *mctx))
1701 {
1702     pmeth->signctx_init = signctx_init;
1703     pmeth->signctx = signctx;
1704 }
1705
1706 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1707                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1708                                                         EVP_MD_CTX *mctx),
1709                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1710                                                    const unsigned char *sig,
1711                                                    int siglen,
1712                                                    EVP_MD_CTX *mctx))
1713 {
1714     pmeth->verifyctx_init = verifyctx_init;
1715     pmeth->verifyctx = verifyctx;
1716 }
1717
1718 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1719                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1720                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1721                                                  unsigned char *out,
1722                                                  size_t *outlen,
1723                                                  const unsigned char *in,
1724                                                  size_t inlen))
1725 {
1726     pmeth->encrypt_init = encrypt_init;
1727     pmeth->encrypt = encryptfn;
1728 }
1729
1730 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1731                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1732                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1733                                                unsigned char *out,
1734                                                size_t *outlen,
1735                                                const unsigned char *in,
1736                                                size_t inlen))
1737 {
1738     pmeth->decrypt_init = decrypt_init;
1739     pmeth->decrypt = decrypt;
1740 }
1741
1742 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1743                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1744                               int (*derive) (EVP_PKEY_CTX *ctx,
1745                                              unsigned char *key,
1746                                              size_t *keylen))
1747 {
1748     pmeth->derive_init = derive_init;
1749     pmeth->derive = derive;
1750 }
1751
1752 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1753                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1754                                          void *p2),
1755                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1756                                              const char *type,
1757                                              const char *value))
1758 {
1759     pmeth->ctrl = ctrl;
1760     pmeth->ctrl_str = ctrl_str;
1761 }
1762
1763 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1764     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1765                        const unsigned char *tbs, size_t tbslen))
1766 {
1767     pmeth->digestsign = digestsign;
1768 }
1769
1770 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1771     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1772                          size_t siglen, const unsigned char *tbs,
1773                          size_t tbslen))
1774 {
1775     pmeth->digestverify = digestverify;
1776 }
1777
1778 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1779                              int (*check) (EVP_PKEY *pkey))
1780 {
1781     pmeth->check = check;
1782 }
1783
1784 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1785                                     int (*check) (EVP_PKEY *pkey))
1786 {
1787     pmeth->public_check = check;
1788 }
1789
1790 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1791                                    int (*check) (EVP_PKEY *pkey))
1792 {
1793     pmeth->param_check = check;
1794 }
1795
1796 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1797                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1798                                                            EVP_MD_CTX *mctx))
1799 {
1800     pmeth->digest_custom = digest_custom;
1801 }
1802
1803 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1804                             int (**pinit) (EVP_PKEY_CTX *ctx))
1805 {
1806     *pinit = pmeth->init;
1807 }
1808
1809 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1810                             int (**pcopy) (EVP_PKEY_CTX *dst,
1811                                            const EVP_PKEY_CTX *src))
1812 {
1813     *pcopy = pmeth->copy;
1814 }
1815
1816 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1817                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1818 {
1819     *pcleanup = pmeth->cleanup;
1820 }
1821
1822 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1823                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1824                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1825                                                    EVP_PKEY *pkey))
1826 {
1827     if (pparamgen_init)
1828         *pparamgen_init = pmeth->paramgen_init;
1829     if (pparamgen)
1830         *pparamgen = pmeth->paramgen;
1831 }
1832
1833 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1834                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1835                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1836                                                EVP_PKEY *pkey))
1837 {
1838     if (pkeygen_init)
1839         *pkeygen_init = pmeth->keygen_init;
1840     if (pkeygen)
1841         *pkeygen = pmeth->keygen;
1842 }
1843
1844 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1845                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1846                             int (**psign) (EVP_PKEY_CTX *ctx,
1847                                            unsigned char *sig, size_t *siglen,
1848                                            const unsigned char *tbs,
1849                                            size_t tbslen))
1850 {
1851     if (psign_init)
1852         *psign_init = pmeth->sign_init;
1853     if (psign)
1854         *psign = pmeth->sign;
1855 }
1856
1857 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1858                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1859                               int (**pverify) (EVP_PKEY_CTX *ctx,
1860                                                const unsigned char *sig,
1861                                                size_t siglen,
1862                                                const unsigned char *tbs,
1863                                                size_t tbslen))
1864 {
1865     if (pverify_init)
1866         *pverify_init = pmeth->verify_init;
1867     if (pverify)
1868         *pverify = pmeth->verify;
1869 }
1870
1871 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1872                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1873                                                                     *ctx),
1874                                       int (**pverify_recover) (EVP_PKEY_CTX
1875                                                                *ctx,
1876                                                                unsigned char
1877                                                                *sig,
1878                                                                size_t *siglen,
1879                                                                const unsigned
1880                                                                char *tbs,
1881                                                                size_t tbslen))
1882 {
1883     if (pverify_recover_init)
1884         *pverify_recover_init = pmeth->verify_recover_init;
1885     if (pverify_recover)
1886         *pverify_recover = pmeth->verify_recover;
1887 }
1888
1889 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1890                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1891                                                       EVP_MD_CTX *mctx),
1892                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1893                                                  unsigned char *sig,
1894                                                  size_t *siglen,
1895                                                  EVP_MD_CTX *mctx))
1896 {
1897     if (psignctx_init)
1898         *psignctx_init = pmeth->signctx_init;
1899     if (psignctx)
1900         *psignctx = pmeth->signctx;
1901 }
1902
1903 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1904                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1905                                                           EVP_MD_CTX *mctx),
1906                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1907                                                      const unsigned char *sig,
1908                                                      int siglen,
1909                                                      EVP_MD_CTX *mctx))
1910 {
1911     if (pverifyctx_init)
1912         *pverifyctx_init = pmeth->verifyctx_init;
1913     if (pverifyctx)
1914         *pverifyctx = pmeth->verifyctx;
1915 }
1916
1917 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1918                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1919                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1920                                                    unsigned char *out,
1921                                                    size_t *outlen,
1922                                                    const unsigned char *in,
1923                                                    size_t inlen))
1924 {
1925     if (pencrypt_init)
1926         *pencrypt_init = pmeth->encrypt_init;
1927     if (pencryptfn)
1928         *pencryptfn = pmeth->encrypt;
1929 }
1930
1931 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1932                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1933                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1934                                                  unsigned char *out,
1935                                                  size_t *outlen,
1936                                                  const unsigned char *in,
1937                                                  size_t inlen))
1938 {
1939     if (pdecrypt_init)
1940         *pdecrypt_init = pmeth->decrypt_init;
1941     if (pdecrypt)
1942         *pdecrypt = pmeth->decrypt;
1943 }
1944
1945 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1946                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1947                               int (**pderive) (EVP_PKEY_CTX *ctx,
1948                                                unsigned char *key,
1949                                                size_t *keylen))
1950 {
1951     if (pderive_init)
1952         *pderive_init = pmeth->derive_init;
1953     if (pderive)
1954         *pderive = pmeth->derive;
1955 }
1956
1957 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1958                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1959                                            void *p2),
1960                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1961                                                const char *type,
1962                                                const char *value))
1963 {
1964     if (pctrl)
1965         *pctrl = pmeth->ctrl;
1966     if (pctrl_str)
1967         *pctrl_str = pmeth->ctrl_str;
1968 }
1969
1970 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1971     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1972                         const unsigned char *tbs, size_t tbslen))
1973 {
1974     if (digestsign)
1975         *digestsign = pmeth->digestsign;
1976 }
1977
1978 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1979     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1980                           size_t siglen, const unsigned char *tbs,
1981                           size_t tbslen))
1982 {
1983     if (digestverify)
1984         *digestverify = pmeth->digestverify;
1985 }
1986
1987 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1988                              int (**pcheck) (EVP_PKEY *pkey))
1989 {
1990     if (pcheck != NULL)
1991         *pcheck = pmeth->check;
1992 }
1993
1994 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1995                                     int (**pcheck) (EVP_PKEY *pkey))
1996 {
1997     if (pcheck != NULL)
1998         *pcheck = pmeth->public_check;
1999 }
2000
2001 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2002                                    int (**pcheck) (EVP_PKEY *pkey))
2003 {
2004     if (pcheck != NULL)
2005         *pcheck = pmeth->param_check;
2006 }
2007
2008 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2009                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2010                                                              EVP_MD_CTX *mctx))
2011 {
2012     if (pdigest_custom != NULL)
2013         *pdigest_custom = pmeth->digest_custom;
2014 }
2015
2016 #endif /* FIPS_MODULE */