crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2020 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 # ifndef OPENSSL_NO_RSA
  53     ossl_rsa_pkey_method,
  54 # endif
  55 # ifndef OPENSSL_NO_DH
  56     dh_pkey_method,
  57 # endif
  58 # ifndef OPENSSL_NO_DSA
  59     dsa_pkey_method,
  60 # endif
  61 # ifndef OPENSSL_NO_EC
  62     ec_pkey_method,
  63 # endif
  64 # ifndef OPENSSL_NO_RSA
  65     ossl_rsa_pss_pkey_method,
  66 # endif
  67 # ifndef OPENSSL_NO_DH
  68     dhx_pkey_method,
  69 # endif
  70 # ifndef OPENSSL_NO_EC
  71     ecx25519_pkey_method,
  72     ecx448_pkey_method,
  73 # endif
  74 # ifndef OPENSSL_NO_EC
  75     ed25519_pkey_method,
  76     ed448_pkey_method,
  77 # endif
  78 };
  79
  80 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  81
  82 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  83 {
  84     return ((*a)->pkey_id - ((**b)())->pkey_id);
  85 }
  86
  87 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  88
  89 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  90                      const EVP_PKEY_METHOD *const *b)
  91 {
  92     return ((*a)->pkey_id - (*b)->pkey_id);
  93 }
  94
  95 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  96 {
  97     pmeth_fn *ret;
  98     EVP_PKEY_METHOD tmp;
  99     const EVP_PKEY_METHOD *t = &tmp;
 100
 101     tmp.pkey_id = type;
 102     if (app_pkey_methods) {
 103         int idx;
 104         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 105         if (idx >= 0)
 106             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 107     }
 108     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 109                                  sizeof(standard_methods) /
 110                                  sizeof(pmeth_fn));
 111     if (ret == NULL || *ret == NULL)
 112         return NULL;
 113     return (**ret)();
 114 }
 115
 116 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 117 {
 118     EVP_PKEY_METHOD *pmeth;
 119
 120     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 121     if (pmeth == NULL) {
 122         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 123         return NULL;
 124     }
 125
 126     pmeth->pkey_id = id;
 127     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 128     return pmeth;
 129 }
 130
 131 /* Three possible states: */
 132 # define EVP_PKEY_STATE_UNKNOWN         0
 133 # define EVP_PKEY_STATE_LEGACY          1
 134 # define EVP_PKEY_STATE_PROVIDER        2
 135
 136 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
 137 {
 138     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 139         return EVP_PKEY_STATE_UNKNOWN;
 140
 141     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 142          && ctx->op.kex.exchprovctx != NULL)
 143         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 144             && ctx->op.sig.sigprovctx != NULL)
 145         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 146             && ctx->op.ciph.ciphprovctx != NULL)
 147         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 148             && ctx->op.keymgmt.genctx != NULL)
 149         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 150             && ctx->op.encap.kemprovctx != NULL))
 151         return EVP_PKEY_STATE_PROVIDER;
 152
 153     return EVP_PKEY_STATE_LEGACY;
 154 }
 155
 156 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 157                                                   void *arg)
 158 {
 159     int *type = arg;
 160
 161     if (*type == NID_undef)
 162         *type = evp_pkey_name2type(keytype);
 163 }
 164
 165 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 166 {
 167     int type = NID_undef;
 168
 169     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 170                              &type);
 171     return type;
 172 }
 173 #endif /* FIPS_MODULE */
 174
 175 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 176                                  EVP_PKEY *pkey, ENGINE *e,
 177                                  const char *keytype, const char *propquery,
 178                                  int id)
 179
 180 {
 181     EVP_PKEY_CTX *ret = NULL;
 182     const EVP_PKEY_METHOD *pmeth = NULL;
 183     EVP_KEYMGMT *keymgmt = NULL;
 184
 185     /*
 186      * If the given |pkey| is provided, we extract the keytype from its
 187      * keymgmt and skip over the legacy code.
 188      */
 189     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 190         /* If we have an engine, something went wrong somewhere... */
 191         if (!ossl_assert(e == NULL))
 192             return NULL;
 193         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 194         goto common;
 195     }
 196
 197 #ifndef FIPS_MODULE
 198     /*
 199      * TODO(3.0) This legacy code section should be removed when we stop
 200      * supporting engines
 201      */
 202     /* BEGIN legacy */
 203     if (id == -1) {
 204         if (pkey != NULL)
 205             id = pkey->type;
 206         else if (keytype != NULL)
 207             id = evp_pkey_name2type(keytype);
 208         if (id == NID_undef)
 209             id = -1;
 210     }
 211     /* If no ID was found here, we can only resort to find a keymgmt */
 212     if (id == -1)
 213         goto common;
 214
 215     /*
 216      * Here, we extract what information we can for the purpose of
 217      * supporting usage with implementations from providers, to make
 218      * for a smooth transition from legacy stuff to provider based stuff.
 219      *
 220      * If an engine is given, this is entirely legacy, and we should not
 221      * pretend anything else, so we only set the name when no engine is
 222      * given.  If both are already given, someone made a mistake, and
 223      * since that can only happen internally, it's safe to make an
 224      * assertion.
 225      */
 226     if (!ossl_assert(e == NULL || keytype == NULL))
 227         return NULL;
 228     if (e == NULL)
 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) {
 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
 251 # endif
 252         pmeth = EVP_PKEY_meth_find(id);
 253
 254     /* END legacy */
 255 #endif /* FIPS_MODULE */
 256  common:
 257     /*
 258      * If there's no engine and there's a name, we try fetching a provider
 259      * implementation.
 260      */
 261     if (e == NULL && keytype != NULL) {
 262         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 263         if (keymgmt == NULL)
 264             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 265
 266 #ifndef FIPS_MODULE
 267         /*
 268          * Chase down the legacy NID, as that might be needed for diverse
 269          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 270          * values, or that there's a better chance to "downgrade" a key when
 271          * needed.  We go through all keymgmt names, because the keytype
 272          * that's passed to this function doesn't necessarily translate
 273          * directly.
 274          * TODO: Remove this when #legacy keys are gone.
 275          */
 276         if (keymgmt != NULL) {
 277             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 278
 279             if (tmp_id != NID_undef) {
 280                 if (id == -1) {
 281                     id = tmp_id;
 282                 } else {
 283                     /*
 284                      * It really really shouldn't differ.  If it still does,
 285                      * something is very wrong.
 286                      */
 287                     if (!ossl_assert(id == tmp_id)) {
 288                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 289                         EVP_KEYMGMT_free(keymgmt);
 290                         return NULL;
 291                     }
 292                 }
 293             }
 294         }
 295 #endif
 296     }
 297
 298     if (pmeth == NULL && keymgmt == NULL) {
 299         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 300     } else {
 301         ret = OPENSSL_zalloc(sizeof(*ret));
 302         if (ret == NULL)
 303             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 304     }
 305
 306 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 307     if ((ret == NULL || pmeth == NULL) && e != NULL)
 308         ENGINE_finish(e);
 309 #endif
 310
 311     if (ret == NULL) {
 312         EVP_KEYMGMT_free(keymgmt);
 313         return NULL;
 314     }
 315     if (propquery != NULL) {
 316         ret->propquery = OPENSSL_strdup(propquery);
 317         if (ret->propquery == NULL) {
 318             EVP_KEYMGMT_free(keymgmt);
 319             return NULL;
 320         }
 321     }
 322     ret->libctx = libctx;
 323     ret->keytype = keytype;
 324     ret->keymgmt = keymgmt;
 325     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 326     ret->engine = e;
 327     ret->pmeth = pmeth;
 328     ret->operation = EVP_PKEY_OP_UNDEFINED;
 329     ret->pkey = pkey;
 330     if (pkey != NULL)
 331         EVP_PKEY_up_ref(pkey);
 332
 333     if (pmeth != NULL && pmeth->init != NULL) {
 334         if (pmeth->init(ret) <= 0) {
 335             ret->pmeth = NULL;
 336             EVP_PKEY_CTX_free(ret);
 337             return NULL;
 338         }
 339     }
 340
 341     return ret;
 342 }
 343
 344 /*- All methods below can also be used in FIPS_MODULE */
 345
 346 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 347                                          const char *name,
 348                                          const char *propquery)
 349 {
 350     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 351 }
 352
 353 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 354                                          const char *propquery)
 355 {
 356     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 357 }
 358
 359 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 360 {
 361     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 362         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 363             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 364         EVP_SIGNATURE_free(ctx->op.sig.signature);
 365         ctx->op.sig.sigprovctx = NULL;
 366         ctx->op.sig.signature = NULL;
 367     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 368         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 369             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 370         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 371         ctx->op.kex.exchprovctx = NULL;
 372         ctx->op.kex.exchange = NULL;
 373     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 374         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 375             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 376         EVP_KEM_free(ctx->op.encap.kem);
 377         ctx->op.encap.kemprovctx = NULL;
 378         ctx->op.encap.kem = NULL;
 379     }
 380     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 381         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 382             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 383         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 384         ctx->op.ciph.ciphprovctx = NULL;
 385         ctx->op.ciph.cipher = NULL;
 386     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 387         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 388             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 389     }
 390 }
 391
 392 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 393 {
 394     if (ctx == NULL)
 395         return;
 396     if (ctx->pmeth && ctx->pmeth->cleanup)
 397         ctx->pmeth->cleanup(ctx);
 398
 399     evp_pkey_ctx_free_old_ops(ctx);
 400 #ifndef FIPS_MODULE
 401     evp_pkey_ctx_free_all_cached_data(ctx);
 402 #endif
 403     EVP_KEYMGMT_free(ctx->keymgmt);
 404
 405     OPENSSL_free(ctx->propquery);
 406     EVP_PKEY_free(ctx->pkey);
 407     EVP_PKEY_free(ctx->peerkey);
 408 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 409     ENGINE_finish(ctx->engine);
 410 #endif
 411     BN_free(ctx->rsa_pubexp);
 412     OPENSSL_free(ctx);
 413 }
 414
 415 #ifndef FIPS_MODULE
 416
 417 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 418                              const EVP_PKEY_METHOD *meth)
 419 {
 420     if (ppkey_id)
 421         *ppkey_id = meth->pkey_id;
 422     if (pflags)
 423         *pflags = meth->flags;
 424 }
 425
 426 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 427 {
 428     int pkey_id = dst->pkey_id;
 429     int flags = dst->flags;
 430
 431     *dst = *src;
 432
 433     /* We only copy the function pointers so restore the other values */
 434     dst->pkey_id = pkey_id;
 435     dst->flags = flags;
 436 }
 437
 438 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 439 {
 440     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 441         OPENSSL_free(pmeth);
 442 }
 443
 444 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 445 {
 446     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 447 }
 448
 449 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 450 {
 451     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 452 }
 453
 454 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 455 {
 456     EVP_PKEY_CTX *rctx;
 457
 458     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 459             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 460                  && pctx->op.kex.exchprovctx == NULL)
 461                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 462                     && pctx->op.sig.sigprovctx == NULL)))
 463         return NULL;
 464 # ifndef OPENSSL_NO_ENGINE
 465     /* Make sure it's safe to copy a pkey context using an ENGINE */
 466     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 467         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 468         return 0;
 469     }
 470 # endif
 471     rctx = OPENSSL_zalloc(sizeof(*rctx));
 472     if (rctx == NULL) {
 473         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 474         return NULL;
 475     }
 476
 477     if (pctx->pkey != NULL)
 478         EVP_PKEY_up_ref(pctx->pkey);
 479     rctx->pkey = pctx->pkey;
 480     rctx->operation = pctx->operation;
 481     rctx->libctx = pctx->libctx;
 482     rctx->keytype = pctx->keytype;
 483     rctx->propquery = NULL;
 484     if (pctx->propquery != NULL) {
 485         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 486         if (rctx->propquery == NULL) {
 487             OPENSSL_free(rctx);
 488             return NULL;
 489         }
 490     }
 491     rctx->legacy_keytype = pctx->legacy_keytype;
 492
 493     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 494         if (pctx->op.kex.exchange != NULL) {
 495             rctx->op.kex.exchange = pctx->op.kex.exchange;
 496             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 497                 goto end;
 498         }
 499         if (pctx->op.kex.exchprovctx != NULL) {
 500             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 501                 goto end;
 502             rctx->op.kex.exchprovctx
 503                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 504             if (rctx->op.kex.exchprovctx == NULL) {
 505                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 506                 goto end;
 507             }
 508             return rctx;
 509         }
 510     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 511         if (pctx->op.sig.signature != NULL) {
 512             rctx->op.sig.signature = pctx->op.sig.signature;
 513             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 514                 goto end;
 515         }
 516         if (pctx->op.sig.sigprovctx != NULL) {
 517             if (!ossl_assert(pctx->op.sig.signature != NULL))
 518                 goto end;
 519             rctx->op.sig.sigprovctx
 520                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 521             if (rctx->op.sig.sigprovctx == NULL) {
 522                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 523                 goto end;
 524             }
 525             return rctx;
 526         }
 527     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 528         if (pctx->op.ciph.cipher != NULL) {
 529             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 530             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 531                 goto end;
 532         }
 533         if (pctx->op.ciph.ciphprovctx != NULL) {
 534             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 535                 goto end;
 536             rctx->op.ciph.ciphprovctx
 537                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 538             if (rctx->op.ciph.ciphprovctx == NULL) {
 539                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 540                 goto end;
 541             }
 542             return rctx;
 543         }
 544     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 545         if (pctx->op.encap.kem != NULL) {
 546             rctx->op.encap.kem = pctx->op.encap.kem;
 547             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 548                 goto end;
 549         }
 550         if (pctx->op.encap.kemprovctx != NULL) {
 551             if (!ossl_assert(pctx->op.encap.kem != NULL))
 552                 goto end;
 553             rctx->op.encap.kemprovctx
 554                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 555             if (rctx->op.encap.kemprovctx == NULL) {
 556                 EVP_KEM_free(rctx->op.encap.kem);
 557                 goto end;
 558             }
 559             return rctx;
 560         }
 561     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 562         /* Not supported - This would need a gen_dupctx() to work */
 563         goto end;
 564     }
 565
 566     rctx->pmeth = pctx->pmeth;
 567 # ifndef OPENSSL_NO_ENGINE
 568     rctx->engine = pctx->engine;
 569 # endif
 570
 571     if (pctx->peerkey != NULL)
 572         EVP_PKEY_up_ref(pctx->peerkey);
 573     rctx->peerkey = pctx->peerkey;
 574
 575     if (pctx->pmeth == NULL) {
 576         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 577             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 578             void *provkey;
 579
 580             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 581                                                   &tmp_keymgmt, pctx->propquery);
 582             if (provkey == NULL)
 583                 goto err;
 584             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 585                 goto err;
 586             EVP_KEYMGMT_free(rctx->keymgmt);
 587             rctx->keymgmt = tmp_keymgmt;
 588             return rctx;
 589         }
 590         goto err;
 591     }
 592     if (pctx->pmeth->copy(rctx, pctx) > 0)
 593         return rctx;
 594 err:
 595     rctx->pmeth = NULL;
 596     EVP_PKEY_CTX_free(rctx);
 597     return NULL;
 598 end:
 599     OPENSSL_free(rctx);
 600     return NULL;
 601 }
 602
 603 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 604 {
 605     if (app_pkey_methods == NULL) {
 606         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 607         if (app_pkey_methods == NULL){
 608             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 609             return 0;
 610         }
 611     }
 612     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 613         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 614         return 0;
 615     }
 616     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 617     return 1;
 618 }
 619
 620 void evp_app_cleanup_int(void)
 621 {
 622     if (app_pkey_methods != NULL)
 623         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 624 }
 625
 626 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 627 {
 628     const EVP_PKEY_METHOD *ret;
 629
 630     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 631
 632     return ret == NULL ? 0 : 1;
 633 }
 634
 635 size_t EVP_PKEY_meth_get_count(void)
 636 {
 637     size_t rv = OSSL_NELEM(standard_methods);
 638
 639     if (app_pkey_methods)
 640         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 641     return rv;
 642 }
 643
 644 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 645 {
 646     if (idx < OSSL_NELEM(standard_methods))
 647         return (standard_methods[idx])();
 648     if (app_pkey_methods == NULL)
 649         return NULL;
 650     idx -= OSSL_NELEM(standard_methods);
 651     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 652         return NULL;
 653     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 654 }
 655 #endif
 656
 657 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 658 {
 659     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 660             && ctx->op.kex.exchprovctx != NULL
 661             && ctx->op.kex.exchange != NULL
 662             && ctx->op.kex.exchange->set_ctx_params != NULL)
 663         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 664                                                     params);
 665     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 666             && ctx->op.sig.sigprovctx != NULL
 667             && ctx->op.sig.signature != NULL
 668             && ctx->op.sig.signature->set_ctx_params != NULL)
 669         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 670                                                      params);
 671     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 672             && ctx->op.ciph.ciphprovctx != NULL
 673             && ctx->op.ciph.cipher != NULL
 674             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 675         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 676                                                      params);
 677     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 678         && ctx->op.keymgmt.genctx != NULL
 679         && ctx->keymgmt != NULL
 680         && ctx->keymgmt->gen_set_params != NULL)
 681         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 682                                           params);
 683     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 684         && ctx->op.encap.kemprovctx != NULL
 685         && ctx->op.encap.kem != NULL
 686         && ctx->op.encap.kem->set_ctx_params != NULL)
 687         return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 688                                                  params);
 689     return 0;
 690 }
 691
 692 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 693 {
 694     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 695             && ctx->op.kex.exchprovctx != NULL
 696             && ctx->op.kex.exchange != NULL
 697             && ctx->op.kex.exchange->get_ctx_params != NULL)
 698         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 699                                                     params);
 700     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 701             && ctx->op.sig.sigprovctx != NULL
 702             && ctx->op.sig.signature != NULL
 703             && ctx->op.sig.signature->get_ctx_params != NULL)
 704         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 705                                                      params);
 706     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 707             && ctx->op.ciph.ciphprovctx != NULL
 708             && ctx->op.ciph.cipher != NULL
 709             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 710         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 711                                                    params);
 712     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 713         && ctx->op.encap.kemprovctx != NULL
 714         && ctx->op.encap.kem != NULL
 715         && ctx->op.encap.kem->get_ctx_params != NULL)
 716         return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 717                                                  params);
 718     return 0;
 719 }
 720
 721 #ifndef FIPS_MODULE
 722 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 723 {
 724     void *provctx;
 725
 726     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 727             && ctx->op.kex.exchange != NULL
 728             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 729         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 730         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 731     }
 732     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 733             && ctx->op.sig.signature != NULL
 734             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 735         provctx = ossl_provider_ctx(
 736                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 737         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 738     }
 739     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 740             && ctx->op.ciph.cipher != NULL
 741             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 742         provctx = ossl_provider_ctx(
 743                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 744         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 745     }
 746     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 747         && ctx->op.encap.kem != NULL
 748         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 749         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 750         return ctx->op.encap.kem->gettable_ctx_params(provctx);
 751     }
 752     return NULL;
 753 }
 754
 755 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 756 {
 757     void *provctx;
 758
 759     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 760             && ctx->op.kex.exchange != NULL
 761             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 762         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 763         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 764     }
 765     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 766             && ctx->op.sig.signature != NULL
 767             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 768         provctx = ossl_provider_ctx(
 769                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 770         return ctx->op.sig.signature->settable_ctx_params(provctx);
 771     }
 772     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 773             && ctx->op.ciph.cipher != NULL
 774             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 775         provctx = ossl_provider_ctx(
 776                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 777         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 778     }
 779     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 780             && ctx->keymgmt != NULL)
 781         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 782     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 783         && ctx->op.encap.kem != NULL
 784         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 785         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 786         return ctx->op.encap.kem->settable_ctx_params(provctx);
 787     }
 788     return NULL;
 789 }
 790
 791 /*
 792  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 793  *
 794  * Return 1 on success, 0 or negative for errors.
 795  *
 796  * In particular they return -2 if any of the params is not supported.
 797  *
 798  * They are not available in FIPS_MODULE as they depend on
 799  *      - EVP_PKEY_CTX_{get,set}_params()
 800  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 801  *
 802  */
 803 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 804 {
 805     const OSSL_PARAM *p;
 806
 807     if (ctx == NULL || params == NULL)
 808         return 0;
 809
 810     for (p = params; p->key != NULL; p++) {
 811         /* Check the ctx actually understands this parameter */
 812         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 813                                     p->key) == NULL )
 814             return -2;
 815     }
 816
 817     return EVP_PKEY_CTX_set_params(ctx, params);
 818 }
 819
 820 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 821 {
 822     const OSSL_PARAM *p;
 823
 824     if (ctx == NULL || params == NULL)
 825         return 0;
 826
 827     for (p = params; p->key != NULL; p++ ) {
 828         /* Check the ctx actually understands this parameter */
 829         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 830                                     p->key) == NULL )
 831             return -2;
 832     }
 833
 834     return EVP_PKEY_CTX_get_params(ctx, params);
 835 }
 836
 837 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 838 {
 839     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 840     /* 80 should be big enough */
 841     char name[80] = "";
 842     const EVP_MD *tmp;
 843
 844     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 845         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 846         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 847         return -2;
 848     }
 849
 850     /* TODO(3.0): Remove this eventually when no more legacy */
 851     if (ctx->op.sig.sigprovctx == NULL)
 852         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 853                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 854
 855     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 856                                             name,
 857                                             sizeof(name));
 858     *p = OSSL_PARAM_construct_end();
 859
 860     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 861         return 0;
 862
 863     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 864     if (tmp == NULL)
 865         return 0;
 866
 867     *md = tmp;
 868
 869     return 1;
 870 }
 871
 872 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 873                                int fallback, const char *param, int op,
 874                                int ctrl)
 875 {
 876     OSSL_PARAM md_params[2], *p = md_params;
 877     const char *name;
 878
 879     if (ctx == NULL || (ctx->operation & op) == 0) {
 880         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 881         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 882         return -2;
 883     }
 884
 885     /* TODO(3.0): Remove this eventually when no more legacy */
 886     if (fallback)
 887         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 888
 889     if (md == NULL) {
 890         name = "";
 891     } else {
 892         name = EVP_MD_name(md);
 893     }
 894
 895     *p++ = OSSL_PARAM_construct_utf8_string(param,
 896                                             /*
 897                                              * Cast away the const. This is read
 898                                              * only so should be safe
 899                                              */
 900                                             (char *)name, 0);
 901     *p = OSSL_PARAM_construct_end();
 902
 903     return EVP_PKEY_CTX_set_params(ctx, md_params);
 904 }
 905
 906 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 907 {
 908     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 909                                OSSL_SIGNATURE_PARAM_DIGEST,
 910                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 911 }
 912
 913 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 914 {
 915     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 916                                OSSL_KDF_PARAM_DIGEST,
 917                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 918 }
 919
 920 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 921                                           const char *param, int op, int ctrl,
 922                                           const unsigned char *data,
 923                                           int datalen)
 924 {
 925     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 926
 927     if (ctx == NULL || (ctx->operation & op) == 0) {
 928         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 929         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 930         return -2;
 931     }
 932
 933     /* TODO(3.0): Remove this eventually when no more legacy */
 934     if (fallback)
 935         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 936
 937     if (datalen < 0) {
 938         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 939         return 0;
 940     }
 941
 942     *p++ = OSSL_PARAM_construct_octet_string(param,
 943                                             /*
 944                                              * Cast away the const. This is read
 945                                              * only so should be safe
 946                                              */
 947                                             (unsigned char *)data,
 948                                             (size_t)datalen);
 949     *p = OSSL_PARAM_construct_end();
 950
 951     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 952 }
 953
 954 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 955                                       const unsigned char *sec, int seclen)
 956 {
 957     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 958                                           OSSL_KDF_PARAM_SECRET,
 959                                           EVP_PKEY_OP_DERIVE,
 960                                           EVP_PKEY_CTRL_TLS_SECRET,
 961                                           sec, seclen);
 962 }
 963
 964 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 965                                     const unsigned char *seed, int seedlen)
 966 {
 967     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 968                                           OSSL_KDF_PARAM_SEED,
 969                                           EVP_PKEY_OP_DERIVE,
 970                                           EVP_PKEY_CTRL_TLS_SEED,
 971                                           seed, seedlen);
 972 }
 973
 974 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 975 {
 976     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 977                                OSSL_KDF_PARAM_DIGEST,
 978                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 979 }
 980
 981 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 982                                 const unsigned char *salt, int saltlen)
 983 {
 984     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 985                                           OSSL_KDF_PARAM_SALT,
 986                                           EVP_PKEY_OP_DERIVE,
 987                                           EVP_PKEY_CTRL_HKDF_SALT,
 988                                           salt, saltlen);
 989 }
 990
 991 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 992                                       const unsigned char *key, int keylen)
 993 {
 994     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 995                                           OSSL_KDF_PARAM_KEY,
 996                                           EVP_PKEY_OP_DERIVE,
 997                                           EVP_PKEY_CTRL_HKDF_KEY,
 998                                           key, keylen);
 999 }
1000
1001 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1002                                       const unsigned char *info, int infolen)
1003 {
1004     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1005                                           OSSL_KDF_PARAM_INFO,
1006                                           EVP_PKEY_OP_DERIVE,
1007                                           EVP_PKEY_CTRL_HKDF_INFO,
1008                                           info, infolen);
1009 }
1010
1011 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1012 {
1013     OSSL_PARAM int_params[2], *p = int_params;
1014
1015     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1016         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1017         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1018         return -2;
1019     }
1020
1021     /* TODO(3.0): Remove this eventually when no more legacy */
1022     if (ctx->op.kex.exchprovctx == NULL)
1023         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1024                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1025
1026
1027     if (mode < 0) {
1028         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1029         return 0;
1030     }
1031
1032     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1033     *p = OSSL_PARAM_construct_end();
1034
1035     return EVP_PKEY_CTX_set_params(ctx, int_params);
1036 }
1037
1038 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1039                                int passlen)
1040 {
1041     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1042                                           OSSL_KDF_PARAM_PASSWORD,
1043                                           EVP_PKEY_OP_DERIVE,
1044                                           EVP_PKEY_CTRL_PASS,
1045                                           (const unsigned char *)pass, passlen);
1046 }
1047
1048 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1049                                   const unsigned char *salt, int saltlen)
1050 {
1051     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1052                                           OSSL_KDF_PARAM_SALT,
1053                                           EVP_PKEY_OP_DERIVE,
1054                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1055                                           salt, saltlen);
1056 }
1057
1058 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1059                                    int op, int ctrl, uint64_t val)
1060 {
1061     OSSL_PARAM uint64_params[2], *p = uint64_params;
1062
1063     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1064         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1065         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1066         return -2;
1067     }
1068
1069     /* TODO(3.0): Remove this eventually when no more legacy */
1070     if (ctx->op.kex.exchprovctx == NULL)
1071         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1072
1073     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1074     *p = OSSL_PARAM_construct_end();
1075
1076     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1077 }
1078
1079 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1080 {
1081     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1082                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1083                                    n);
1084 }
1085
1086 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1087 {
1088     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1089                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1090                                    r);
1091 }
1092
1093 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1094 {
1095     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1096                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1097                                    p);
1098 }
1099
1100 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1101                                          uint64_t maxmem_bytes)
1102 {
1103     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1104                                    EVP_PKEY_OP_DERIVE,
1105                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1106                                    maxmem_bytes);
1107 }
1108
1109 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1110                              int keylen)
1111 {
1112     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1113                                           OSSL_PKEY_PARAM_PRIV_KEY,
1114                                           EVP_PKEY_OP_KEYGEN,
1115                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1116                                           key, keylen);
1117 }
1118
1119 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1120 {
1121     OSSL_PARAM params[2], *p = params;
1122
1123     if (ctx == NULL || op == NULL) {
1124         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1125         return 0;
1126     }
1127     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1128         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1129         return -2;
1130     }
1131     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1132                                             (char *)op, 0);
1133     *p = OSSL_PARAM_construct_end();
1134     return EVP_PKEY_CTX_set_params(ctx, params);
1135 }
1136
1137 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1138 {
1139     OSSL_PARAM params[2], *p = params;
1140     int ret;
1141
1142     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1143         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1144         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1145         return -2;
1146     }
1147
1148     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1149                                              /*
1150                                               * Cast away the const. This is
1151                                               * read only so should be safe
1152                                               */
1153                                              (void *)id, (size_t)len);
1154     *p++ = OSSL_PARAM_construct_end();
1155
1156     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1157     if (ret == -2)
1158         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1159     return ret;
1160 }
1161
1162 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1163 {
1164     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1165                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1166 }
1167
1168 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1169 {
1170     int ret;
1171     void *tmp_id = NULL;
1172     OSSL_PARAM params[2], *p = params;
1173
1174     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1175         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1176         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1177         return -2;
1178     }
1179
1180     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1181                                           &tmp_id, 0);
1182     *p++ = OSSL_PARAM_construct_end();
1183
1184     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1185     if (ret == -2) {
1186         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1187     } else if (ret > 0) {
1188         size_t tmp_id_len = params[0].return_size;
1189
1190         if (id != NULL)
1191             memcpy(id, tmp_id, tmp_id_len);
1192         if (id_len != NULL)
1193             *id_len = tmp_id_len;
1194     }
1195     return ret;
1196 }
1197
1198 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1199 {
1200     return get1_id_data(ctx, id, NULL);
1201 }
1202
1203 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1204 {
1205     return get1_id_data(ctx, NULL, id_len);
1206 }
1207
1208 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1209 {
1210     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1211 }
1212
1213 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1214 {
1215     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1216                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1217 }
1218
1219 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1220                                 int cmd, int p1, void *p2)
1221 {
1222     switch (cmd) {
1223     case EVP_PKEY_CTRL_SET1_ID:
1224         return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1225     case EVP_PKEY_CTRL_GET1_ID:
1226         return evp_pkey_ctx_get1_id_prov(ctx, p2);
1227     case EVP_PKEY_CTRL_GET1_ID_LEN:
1228         return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1229     }
1230
1231     if (keytype == EVP_PKEY_DHX) {
1232         switch (cmd) {
1233         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1234             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1235         case EVP_PKEY_CTRL_DH_KDF_MD:
1236             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1237         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1238             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1239         case EVP_PKEY_CTRL_DH_KDF_UKM:
1240             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1241         case EVP_PKEY_CTRL_DH_KDF_OID:
1242             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1243         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1244             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1245         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1246             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1247         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1248             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1249         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1250             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1251         }
1252     }
1253     if (keytype == EVP_PKEY_DH) {
1254         switch (cmd) {
1255             case EVP_PKEY_CTRL_DH_PAD:
1256                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1257             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1258                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1259             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1260                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1261             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1262                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1263             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1264                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1265             case EVP_PKEY_CTRL_DH_RFC5114:
1266                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1267         }
1268     }
1269     if (keytype == EVP_PKEY_DSA) {
1270         switch (cmd) {
1271         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1272             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1273         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1274             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1275         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1276             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1277         }
1278     }
1279     if (keytype == EVP_PKEY_EC) {
1280         switch (cmd) {
1281         case EVP_PKEY_CTRL_EC_PARAM_ENC:
1282             return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1283         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1284             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1285         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1286             if (p1 == -2) {
1287                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1288             } else if (p1 < -1 || p1 > 1) {
1289                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1290                 return -2;
1291             } else {
1292                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1293             }
1294         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1295             if (p1 == -2) {
1296                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1297             } else {
1298                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1299             }
1300         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1301             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1302         case EVP_PKEY_CTRL_EC_KDF_MD:
1303             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1304         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1305             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1306         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1307             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1308         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1309             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1310         case EVP_PKEY_CTRL_EC_KDF_UKM:
1311             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1312         }
1313     }
1314     if (keytype == EVP_PKEY_RSA) {
1315         switch (cmd) {
1316         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1317             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1318         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1319             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1320         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1321             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1322         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1323             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1324         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1325             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1326         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1327             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1328         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1329             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1330         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1331             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1332         }
1333     }
1334     /*
1335      * keytype == -1 is used when several key types share the same structure,
1336      * or for generic controls that are the same across multiple key types.
1337      */
1338     if (keytype == -1) {
1339         if (optype == EVP_PKEY_OP_DERIVE) {
1340             switch (cmd) {
1341             /* TLS1-PRF */
1342             case EVP_PKEY_CTRL_TLS_MD:
1343                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1344             case EVP_PKEY_CTRL_TLS_SECRET:
1345                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1346             case EVP_PKEY_CTRL_TLS_SEED:
1347                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1348
1349             /* HKDF */
1350             case EVP_PKEY_CTRL_HKDF_MD:
1351                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1352             case EVP_PKEY_CTRL_HKDF_SALT :
1353                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1354             case EVP_PKEY_CTRL_HKDF_KEY:
1355                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1356             case EVP_PKEY_CTRL_HKDF_INFO:
1357                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1358             case EVP_PKEY_CTRL_HKDF_MODE:
1359                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1360
1361             /* Scrypt */
1362             case EVP_PKEY_CTRL_PASS:
1363                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1364             case EVP_PKEY_CTRL_SCRYPT_SALT:
1365                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1366             case EVP_PKEY_CTRL_SCRYPT_N:
1367                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1368             case EVP_PKEY_CTRL_SCRYPT_R:
1369                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1370             case EVP_PKEY_CTRL_SCRYPT_P:
1371                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1372             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1373                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1374             }
1375         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1376             OSSL_PARAM params[2], *p = params;
1377
1378             switch (cmd) {
1379             case EVP_PKEY_CTRL_CIPHER:
1380                 {
1381                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1382
1383                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1384                                                             ciphname, 0);
1385                     *p = OSSL_PARAM_construct_end();
1386
1387                     return EVP_PKEY_CTX_set_params(ctx, params);
1388                 }
1389             case EVP_PKEY_CTRL_SET_MAC_KEY:
1390                 {
1391                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1392                                                              p2, p1);
1393                     *p = OSSL_PARAM_construct_end();
1394
1395                     return EVP_PKEY_CTX_set_params(ctx, params);
1396                 }
1397             }
1398         }
1399         switch (cmd) {
1400         case EVP_PKEY_CTRL_MD:
1401             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1402         case EVP_PKEY_CTRL_GET_MD:
1403             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1404         case EVP_PKEY_CTRL_RSA_PADDING:
1405             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1406         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1407             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1408         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1409             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1410         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1411             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1412         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1413             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1414         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1415         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1416 # ifndef OPENSSL_NO_CMS
1417         case EVP_PKEY_CTRL_CMS_DECRYPT:
1418         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1419 # endif
1420             /* TODO (3.0) Temporary hack, this should probe */
1421             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1422                 return 1;
1423             ERR_raise(ERR_LIB_EVP,
1424                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1425             return -2;
1426         }
1427     }
1428
1429     /*
1430      * GOST CMS format is different for different cipher algorithms.
1431      * Most of other algorithms don't have such a difference
1432      * so this ctrl is just ignored.
1433      */
1434     if (cmd == EVP_PKEY_CTRL_CIPHER)
1435         return -2;
1436
1437     return 0;
1438 }
1439
1440 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1441                                  int cmd, int p1, void *p2)
1442 {
1443     int ret = 0;
1444
1445     /*
1446      * If the method has a |digest_custom| function, we can relax the
1447      * operation type check, since this can be called before the operation
1448      * is initialized.
1449      */
1450     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1451         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1452             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1453             return -1;
1454         }
1455
1456         if ((optype != -1) && !(ctx->operation & optype)) {
1457             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1458             return -1;
1459         }
1460     }
1461
1462     switch (evp_pkey_ctx_state(ctx)) {
1463     case EVP_PKEY_STATE_PROVIDER:
1464         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1465     case EVP_PKEY_STATE_UNKNOWN:
1466     case EVP_PKEY_STATE_LEGACY:
1467         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1468             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1469             return -2;
1470         }
1471         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1472             return -1;
1473
1474         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1475
1476         if (ret == -2)
1477             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1478         break;
1479     }
1480     return ret;
1481 }
1482
1483 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1484                       int cmd, int p1, void *p2)
1485 {
1486     int ret = 0;
1487
1488     if (ctx == NULL) {
1489         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1490         return -2;
1491     }
1492     /* If unsupported, we don't want that reported here */
1493     ERR_set_mark();
1494     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1495                                          cmd, NULL, p2, p1);
1496     if (ret == -2) {
1497         ERR_pop_to_mark();
1498     } else {
1499         ERR_clear_last_mark();
1500         /*
1501          * If there was an error, there was an error.
1502          * If the operation isn't initialized yet, we also return, as
1503          * the saved values will be used then anyway.
1504          */
1505         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1506             return ret;
1507     }
1508     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1509 }
1510
1511 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1512                              int cmd, uint64_t value)
1513 {
1514     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1515 }
1516
1517 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1518                                     const char *value)
1519 {
1520     if (strcmp(name, "md") == 0)
1521         name = OSSL_ALG_PARAM_DIGEST;
1522     else if (strcmp(name, "rsa_padding_mode") == 0)
1523         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1524     else if (strcmp(name, "rsa_mgf1_md") == 0)
1525         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1526     else if (strcmp(name, "rsa_oaep_md") == 0)
1527         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1528     else if (strcmp(name, "rsa_oaep_label") == 0)
1529         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1530     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1531         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1532     else if (strcmp(name, "rsa_keygen_bits") == 0)
1533         name = OSSL_PKEY_PARAM_RSA_BITS;
1534     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1535         name = OSSL_PKEY_PARAM_RSA_E;
1536     else if (strcmp(name, "rsa_keygen_primes") == 0)
1537         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1538     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1539         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1540     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1541         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1542     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1543         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1544     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1545         name = OSSL_PKEY_PARAM_FFC_PBITS;
1546     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1547         name = OSSL_PKEY_PARAM_FFC_QBITS;
1548     else if (strcmp(name, "dsa_paramgen_md") == 0)
1549         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1550     else if (strcmp(name, "dh_paramgen_generator") == 0)
1551         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1552     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1553         name = OSSL_PKEY_PARAM_FFC_PBITS;
1554     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1555         name = OSSL_PKEY_PARAM_FFC_QBITS;
1556     else if (strcmp(name, "dh_paramgen_type") == 0) {
1557         name = OSSL_PKEY_PARAM_FFC_TYPE;
1558         value = dh_gen_type_id2name(atoi(value));
1559     } else if (strcmp(name, "dh_param") == 0)
1560         name = OSSL_PKEY_PARAM_GROUP_NAME;
1561     else if (strcmp(name, "dh_rfc5114") == 0) {
1562         int num = atoi(value);
1563
1564         name = OSSL_PKEY_PARAM_GROUP_NAME;
1565         value =
1566             ossl_ffc_named_group_get_name(ossl_ffc_uid_to_dh_named_group(num));
1567     } else if (strcmp(name, "dh_pad") == 0)
1568         name = OSSL_EXCHANGE_PARAM_PAD;
1569     else if (strcmp(name, "ec_paramgen_curve") == 0)
1570         name = OSSL_PKEY_PARAM_GROUP_NAME;
1571     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1572         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1573     else if (strcmp(name, "ecdh_kdf_md") == 0)
1574         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1575     else if (strcmp(name, "ec_param_enc") == 0)
1576         name = OSSL_PKEY_PARAM_EC_ENCODING;
1577     else if (strcmp(name, "N") == 0)
1578         name = OSSL_KDF_PARAM_SCRYPT_N;
1579
1580     {
1581         /*
1582          * TODO(3.0) reduce the code above to only translate known legacy
1583          * string to the corresponding core name (see core_names.h), but
1584          * otherwise leave it to this code block to do the actual work.
1585          */
1586         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1587         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1588         int rv = 0;
1589         int exists = 0;
1590
1591         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1592                                            strlen(value), &exists)) {
1593             if (!exists) {
1594                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1595                                "name=%s,value=%s", name, value);
1596                 return -2;
1597             }
1598             return 0;
1599         }
1600         if (EVP_PKEY_CTX_set_params(ctx, params))
1601             rv = 1;
1602         OPENSSL_free(params[0].data);
1603         return rv;
1604     }
1605 }
1606
1607 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1608                                      const char *name, const char *value)
1609 {
1610     int ret = 0;
1611
1612     if (ctx == NULL) {
1613         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1614         return -2;
1615     }
1616
1617     switch (evp_pkey_ctx_state(ctx)) {
1618     case EVP_PKEY_STATE_PROVIDER:
1619         return legacy_ctrl_str_to_param(ctx, name, value);
1620     case EVP_PKEY_STATE_UNKNOWN:
1621     case EVP_PKEY_STATE_LEGACY:
1622         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1623             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1624             return -2;
1625         }
1626         if (strcmp(name, "digest") == 0)
1627             ret = EVP_PKEY_CTX_md(ctx,
1628                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1629                                   EVP_PKEY_CTRL_MD, value);
1630         else
1631             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1632         break;
1633     }
1634
1635     return ret;
1636 }
1637
1638 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1639                           const char *name, const char *value)
1640 {
1641     int ret = 0;
1642
1643     /* If unsupported, we don't want that reported here */
1644     ERR_set_mark();
1645     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1646                                          name, value, strlen(value) + 1);
1647     if (ret == -2) {
1648         ERR_pop_to_mark();
1649     } else {
1650         ERR_clear_last_mark();
1651         /*
1652          * If there was an error, there was an error.
1653          * If the operation isn't initialized yet, we also return, as
1654          * the saved values will be used then anyway.
1655          */
1656         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1657             return ret;
1658     }
1659
1660     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1661 }
1662
1663 static int decode_cmd(int cmd, const char *name)
1664 {
1665     if (cmd == -1) {
1666         /*
1667          * The consequence of the assertion not being true is that this
1668          * function will return -1, which will cause the calling functions
1669          * to signal that the command is unsupported...  in non-debug mode.
1670          */
1671         if (ossl_assert(name != NULL))
1672             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1673                 cmd = EVP_PKEY_CTRL_SET1_ID;
1674     }
1675
1676     return cmd;
1677 }
1678
1679 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1680                                           int keytype, int optype,
1681                                           int cmd, const char *name,
1682                                           const void *data, size_t data_len)
1683 {
1684     if ((keytype != -1 && ctx->pmeth->pkey_id != keytype)
1685         || ((optype != -1) && !(ctx->operation & optype))) {
1686         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1687         return -1;
1688     }
1689
1690     cmd = decode_cmd(cmd, name);
1691     switch (cmd) {
1692     case EVP_PKEY_CTRL_SET1_ID:
1693         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1694         if (name != NULL) {
1695             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1696             if (ctx->cached_parameters.dist_id_name == NULL) {
1697                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1698                 return 0;
1699             }
1700         }
1701         if (data_len > 0) {
1702             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1703             if (ctx->cached_parameters.dist_id == NULL) {
1704                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1705                 return 0;
1706             }
1707         }
1708         ctx->cached_parameters.dist_id_set = 1;
1709         ctx->cached_parameters.dist_id_len = data_len;
1710         return 1;
1711     }
1712
1713     ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1714     return -2;
1715 }
1716
1717 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1718                                           int cmd, const char *name)
1719 {
1720     cmd = decode_cmd(cmd, name);
1721     switch (cmd) {
1722     case EVP_PKEY_CTRL_SET1_ID:
1723         OPENSSL_free(ctx->cached_parameters.dist_id);
1724         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1725         ctx->cached_parameters.dist_id = NULL;
1726         ctx->cached_parameters.dist_id_name = NULL;
1727         break;
1728     }
1729 }
1730
1731 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1732 {
1733     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1734 }
1735
1736 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1737 {
1738     int ret = 1;
1739
1740     if (ret && ctx->cached_parameters.dist_id_set) {
1741         const char *name = ctx->cached_parameters.dist_id_name;
1742         const void *val = ctx->cached_parameters.dist_id;
1743         size_t len = ctx->cached_parameters.dist_id_len;
1744
1745         if (name != NULL)
1746             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1747         else
1748             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1749                                         EVP_PKEY_CTRL_SET1_ID,
1750                                         (int)len, (void *)val);
1751     }
1752
1753     return ret;
1754 }
1755
1756 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1757 {
1758     return ctx->libctx;
1759 }
1760
1761 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1762 {
1763     return ctx->propquery;
1764 }
1765
1766 /* Utility functions to send a string of hex string to a ctrl */
1767
1768 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1769 {
1770     size_t len;
1771
1772     len = strlen(str);
1773     if (len > INT_MAX)
1774         return -1;
1775     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1776 }
1777
1778 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1779 {
1780     unsigned char *bin;
1781     long binlen;
1782     int rv = -1;
1783
1784     bin = OPENSSL_hexstr2buf(hex, &binlen);
1785     if (bin == NULL)
1786         return 0;
1787     if (binlen <= INT_MAX)
1788         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1789     OPENSSL_free(bin);
1790     return rv;
1791 }
1792
1793 /* Pass a message digest to a ctrl */
1794 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1795 {
1796     const EVP_MD *m;
1797
1798     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1799         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1800         return 0;
1801     }
1802     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1803 }
1804
1805 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1806 {
1807     return ctx->operation;
1808 }
1809
1810 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1811 {
1812     ctx->keygen_info = dat;
1813     ctx->keygen_info_count = datlen;
1814 }
1815
1816 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1817 {
1818     ctx->data = data;
1819 }
1820
1821 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1822 {
1823     return ctx->data;
1824 }
1825
1826 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1827 {
1828     return ctx->pkey;
1829 }
1830
1831 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1832 {
1833     return ctx->peerkey;
1834 }
1835
1836 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1837 {
1838     ctx->app_data = data;
1839 }
1840
1841 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1842 {
1843     return ctx->app_data;
1844 }
1845
1846 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1847                             int (*init) (EVP_PKEY_CTX *ctx))
1848 {
1849     pmeth->init = init;
1850 }
1851
1852 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1853                             int (*copy) (EVP_PKEY_CTX *dst,
1854                                          const EVP_PKEY_CTX *src))
1855 {
1856     pmeth->copy = copy;
1857 }
1858
1859 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1860                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1861 {
1862     pmeth->cleanup = cleanup;
1863 }
1864
1865 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1866                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1867                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1868                                                  EVP_PKEY *pkey))
1869 {
1870     pmeth->paramgen_init = paramgen_init;
1871     pmeth->paramgen = paramgen;
1872 }
1873
1874 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1875                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1876                               int (*keygen) (EVP_PKEY_CTX *ctx,
1877                                              EVP_PKEY *pkey))
1878 {
1879     pmeth->keygen_init = keygen_init;
1880     pmeth->keygen = keygen;
1881 }
1882
1883 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1884                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1885                             int (*sign) (EVP_PKEY_CTX *ctx,
1886                                          unsigned char *sig, size_t *siglen,
1887                                          const unsigned char *tbs,
1888                                          size_t tbslen))
1889 {
1890     pmeth->sign_init = sign_init;
1891     pmeth->sign = sign;
1892 }
1893
1894 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1895                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1896                               int (*verify) (EVP_PKEY_CTX *ctx,
1897                                              const unsigned char *sig,
1898                                              size_t siglen,
1899                                              const unsigned char *tbs,
1900                                              size_t tbslen))
1901 {
1902     pmeth->verify_init = verify_init;
1903     pmeth->verify = verify;
1904 }
1905
1906 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1907                                       int (*verify_recover_init) (EVP_PKEY_CTX
1908                                                                   *ctx),
1909                                       int (*verify_recover) (EVP_PKEY_CTX
1910                                                              *ctx,
1911                                                              unsigned char
1912                                                              *sig,
1913                                                              size_t *siglen,
1914                                                              const unsigned
1915                                                              char *tbs,
1916                                                              size_t tbslen))
1917 {
1918     pmeth->verify_recover_init = verify_recover_init;
1919     pmeth->verify_recover = verify_recover;
1920 }
1921
1922 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1923                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1924                                                     EVP_MD_CTX *mctx),
1925                                int (*signctx) (EVP_PKEY_CTX *ctx,
1926                                                unsigned char *sig,
1927                                                size_t *siglen,
1928                                                EVP_MD_CTX *mctx))
1929 {
1930     pmeth->signctx_init = signctx_init;
1931     pmeth->signctx = signctx;
1932 }
1933
1934 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1935                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1936                                                         EVP_MD_CTX *mctx),
1937                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1938                                                    const unsigned char *sig,
1939                                                    int siglen,
1940                                                    EVP_MD_CTX *mctx))
1941 {
1942     pmeth->verifyctx_init = verifyctx_init;
1943     pmeth->verifyctx = verifyctx;
1944 }
1945
1946 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1947                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1948                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1949                                                  unsigned char *out,
1950                                                  size_t *outlen,
1951                                                  const unsigned char *in,
1952                                                  size_t inlen))
1953 {
1954     pmeth->encrypt_init = encrypt_init;
1955     pmeth->encrypt = encryptfn;
1956 }
1957
1958 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1959                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1960                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1961                                                unsigned char *out,
1962                                                size_t *outlen,
1963                                                const unsigned char *in,
1964                                                size_t inlen))
1965 {
1966     pmeth->decrypt_init = decrypt_init;
1967     pmeth->decrypt = decrypt;
1968 }
1969
1970 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1971                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1972                               int (*derive) (EVP_PKEY_CTX *ctx,
1973                                              unsigned char *key,
1974                                              size_t *keylen))
1975 {
1976     pmeth->derive_init = derive_init;
1977     pmeth->derive = derive;
1978 }
1979
1980 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1981                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1982                                          void *p2),
1983                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1984                                              const char *type,
1985                                              const char *value))
1986 {
1987     pmeth->ctrl = ctrl;
1988     pmeth->ctrl_str = ctrl_str;
1989 }
1990
1991 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1992     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1993                        const unsigned char *tbs, size_t tbslen))
1994 {
1995     pmeth->digestsign = digestsign;
1996 }
1997
1998 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1999     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2000                          size_t siglen, const unsigned char *tbs,
2001                          size_t tbslen))
2002 {
2003     pmeth->digestverify = digestverify;
2004 }
2005
2006 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
2007                              int (*check) (EVP_PKEY *pkey))
2008 {
2009     pmeth->check = check;
2010 }
2011
2012 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
2013                                     int (*check) (EVP_PKEY *pkey))
2014 {
2015     pmeth->public_check = check;
2016 }
2017
2018 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
2019                                    int (*check) (EVP_PKEY *pkey))
2020 {
2021     pmeth->param_check = check;
2022 }
2023
2024 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
2025                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
2026                                                            EVP_MD_CTX *mctx))
2027 {
2028     pmeth->digest_custom = digest_custom;
2029 }
2030
2031 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
2032                             int (**pinit) (EVP_PKEY_CTX *ctx))
2033 {
2034     *pinit = pmeth->init;
2035 }
2036
2037 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2038                             int (**pcopy) (EVP_PKEY_CTX *dst,
2039                                            const EVP_PKEY_CTX *src))
2040 {
2041     *pcopy = pmeth->copy;
2042 }
2043
2044 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2045                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
2046 {
2047     *pcleanup = pmeth->cleanup;
2048 }
2049
2050 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2051                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2052                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2053                                                    EVP_PKEY *pkey))
2054 {
2055     if (pparamgen_init)
2056         *pparamgen_init = pmeth->paramgen_init;
2057     if (pparamgen)
2058         *pparamgen = pmeth->paramgen;
2059 }
2060
2061 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2062                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2063                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
2064                                                EVP_PKEY *pkey))
2065 {
2066     if (pkeygen_init)
2067         *pkeygen_init = pmeth->keygen_init;
2068     if (pkeygen)
2069         *pkeygen = pmeth->keygen;
2070 }
2071
2072 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2073                             int (**psign_init) (EVP_PKEY_CTX *ctx),
2074                             int (**psign) (EVP_PKEY_CTX *ctx,
2075                                            unsigned char *sig, size_t *siglen,
2076                                            const unsigned char *tbs,
2077                                            size_t tbslen))
2078 {
2079     if (psign_init)
2080         *psign_init = pmeth->sign_init;
2081     if (psign)
2082         *psign = pmeth->sign;
2083 }
2084
2085 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2086                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
2087                               int (**pverify) (EVP_PKEY_CTX *ctx,
2088                                                const unsigned char *sig,
2089                                                size_t siglen,
2090                                                const unsigned char *tbs,
2091                                                size_t tbslen))
2092 {
2093     if (pverify_init)
2094         *pverify_init = pmeth->verify_init;
2095     if (pverify)
2096         *pverify = pmeth->verify;
2097 }
2098
2099 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2100                                       int (**pverify_recover_init) (EVP_PKEY_CTX
2101                                                                     *ctx),
2102                                       int (**pverify_recover) (EVP_PKEY_CTX
2103                                                                *ctx,
2104                                                                unsigned char
2105                                                                *sig,
2106                                                                size_t *siglen,
2107                                                                const unsigned
2108                                                                char *tbs,
2109                                                                size_t tbslen))
2110 {
2111     if (pverify_recover_init)
2112         *pverify_recover_init = pmeth->verify_recover_init;
2113     if (pverify_recover)
2114         *pverify_recover = pmeth->verify_recover;
2115 }
2116
2117 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2118                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2119                                                       EVP_MD_CTX *mctx),
2120                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2121                                                  unsigned char *sig,
2122                                                  size_t *siglen,
2123                                                  EVP_MD_CTX *mctx))
2124 {
2125     if (psignctx_init)
2126         *psignctx_init = pmeth->signctx_init;
2127     if (psignctx)
2128         *psignctx = pmeth->signctx;
2129 }
2130
2131 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2132                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2133                                                           EVP_MD_CTX *mctx),
2134                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2135                                                      const unsigned char *sig,
2136                                                      int siglen,
2137                                                      EVP_MD_CTX *mctx))
2138 {
2139     if (pverifyctx_init)
2140         *pverifyctx_init = pmeth->verifyctx_init;
2141     if (pverifyctx)
2142         *pverifyctx = pmeth->verifyctx;
2143 }
2144
2145 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2146                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2147                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2148                                                    unsigned char *out,
2149                                                    size_t *outlen,
2150                                                    const unsigned char *in,
2151                                                    size_t inlen))
2152 {
2153     if (pencrypt_init)
2154         *pencrypt_init = pmeth->encrypt_init;
2155     if (pencryptfn)
2156         *pencryptfn = pmeth->encrypt;
2157 }
2158
2159 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2160                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2161                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2162                                                  unsigned char *out,
2163                                                  size_t *outlen,
2164                                                  const unsigned char *in,
2165                                                  size_t inlen))
2166 {
2167     if (pdecrypt_init)
2168         *pdecrypt_init = pmeth->decrypt_init;
2169     if (pdecrypt)
2170         *pdecrypt = pmeth->decrypt;
2171 }
2172
2173 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2174                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2175                               int (**pderive) (EVP_PKEY_CTX *ctx,
2176                                                unsigned char *key,
2177                                                size_t *keylen))
2178 {
2179     if (pderive_init)
2180         *pderive_init = pmeth->derive_init;
2181     if (pderive)
2182         *pderive = pmeth->derive;
2183 }
2184
2185 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2186                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2187                                            void *p2),
2188                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2189                                                const char *type,
2190                                                const char *value))
2191 {
2192     if (pctrl)
2193         *pctrl = pmeth->ctrl;
2194     if (pctrl_str)
2195         *pctrl_str = pmeth->ctrl_str;
2196 }
2197
2198 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2199     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2200                         const unsigned char *tbs, size_t tbslen))
2201 {
2202     if (digestsign)
2203         *digestsign = pmeth->digestsign;
2204 }
2205
2206 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2207     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2208                           size_t siglen, const unsigned char *tbs,
2209                           size_t tbslen))
2210 {
2211     if (digestverify)
2212         *digestverify = pmeth->digestverify;
2213 }
2214
2215 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2216                              int (**pcheck) (EVP_PKEY *pkey))
2217 {
2218     if (pcheck != NULL)
2219         *pcheck = pmeth->check;
2220 }
2221
2222 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2223                                     int (**pcheck) (EVP_PKEY *pkey))
2224 {
2225     if (pcheck != NULL)
2226         *pcheck = pmeth->public_check;
2227 }
2228
2229 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2230                                    int (**pcheck) (EVP_PKEY *pkey))
2231 {
2232     if (pcheck != NULL)
2233         *pcheck = pmeth->param_check;
2234 }
2235
2236 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2237                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2238                                                              EVP_MD_CTX *mctx))
2239 {
2240     if (pdigest_custom != NULL)
2241         *pdigest_custom = pmeth->digest_custom;
2242 }
2243
2244 #endif /* FIPS_MODULE */