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     ossl_rsa_pkey_method,
  53 # ifndef OPENSSL_NO_DH
  54     dh_pkey_method,
  55 # endif
  56 # ifndef OPENSSL_NO_DSA
  57     dsa_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_EC
  60     ec_pkey_method,
  61 # endif
  62     ossl_rsa_pss_pkey_method,
  63 # ifndef OPENSSL_NO_DH
  64     dhx_pkey_method,
  65 # endif
  66 # ifndef OPENSSL_NO_EC
  67     ecx25519_pkey_method,
  68     ecx448_pkey_method,
  69 # endif
  70 # ifndef OPENSSL_NO_EC
  71     ed25519_pkey_method,
  72     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 /* Three possible states: */
 139 # define EVP_PKEY_STATE_UNKNOWN         0
 140 # define EVP_PKEY_STATE_LEGACY          1
 141 # define EVP_PKEY_STATE_PROVIDER        2
 142
 143 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
 144 {
 145     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 146         return EVP_PKEY_STATE_UNKNOWN;
 147
 148     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 149          && ctx->op.kex.exchprovctx != NULL)
 150         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 151             && ctx->op.sig.sigprovctx != NULL)
 152         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 153             && ctx->op.ciph.ciphprovctx != NULL)
 154         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 155             && ctx->op.keymgmt.genctx != NULL)
 156         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 157             && ctx->op.encap.kemprovctx != NULL))
 158         return EVP_PKEY_STATE_PROVIDER;
 159
 160     return EVP_PKEY_STATE_LEGACY;
 161 }
 162
 163 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 164                                                   void *arg)
 165 {
 166     int *type = arg;
 167
 168     if (*type == NID_undef)
 169         *type = evp_pkey_name2type(keytype);
 170 }
 171
 172 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 173 {
 174     int type = NID_undef;
 175
 176     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 177                              &type);
 178     return type;
 179 }
 180 #endif /* FIPS_MODULE */
 181
 182 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 183                                  EVP_PKEY *pkey, ENGINE *e,
 184                                  const char *keytype, const char *propquery,
 185                                  int id)
 186
 187 {
 188     EVP_PKEY_CTX *ret = NULL;
 189     const EVP_PKEY_METHOD *pmeth = NULL;
 190     EVP_KEYMGMT *keymgmt = NULL;
 191
 192     /*
 193      * If the given |pkey| is provided, we extract the keytype from its
 194      * keymgmt and skip over the legacy code.
 195      */
 196     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 197         /* If we have an engine, something went wrong somewhere... */
 198         if (!ossl_assert(e == NULL))
 199             return NULL;
 200         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 201         goto common;
 202     }
 203
 204 #ifndef FIPS_MODULE
 205     /*
 206      * TODO(3.0) This legacy code section should be removed when we stop
 207      * supporting engines
 208      */
 209     /* BEGIN legacy */
 210     if (id == -1) {
 211         if (pkey != NULL)
 212             id = pkey->type;
 213         else if (keytype != NULL)
 214             id = evp_pkey_name2type(keytype);
 215         if (id == NID_undef)
 216             id = -1;
 217     }
 218     /* If no ID was found here, we can only resort to find a keymgmt */
 219     if (id == -1)
 220         goto common;
 221
 222     /*
 223      * Here, we extract what information we can for the purpose of
 224      * supporting usage with implementations from providers, to make
 225      * for a smooth transition from legacy stuff to provider based stuff.
 226      *
 227      * If an engine is given, this is entirely legacy, and we should not
 228      * pretend anything else, so we only set the name when no engine is
 229      * given.  If both are already given, someone made a mistake, and
 230      * since that can only happen internally, it's safe to make an
 231      * assertion.
 232      */
 233     if (!ossl_assert(e == NULL || keytype == NULL))
 234         return NULL;
 235     if (e == NULL)
 236         keytype = OBJ_nid2sn(id);
 237
 238 # ifndef OPENSSL_NO_ENGINE
 239     if (e == NULL && pkey != NULL)
 240         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 241     /* Try to find an ENGINE which implements this method */
 242     if (e) {
 243         if (!ENGINE_init(e)) {
 244             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 245             return NULL;
 246         }
 247     } else {
 248         e = ENGINE_get_pkey_meth_engine(id);
 249     }
 250
 251     /*
 252      * If an ENGINE handled this method look it up. Otherwise use internal
 253      * tables.
 254      */
 255     if (e != NULL)
 256         pmeth = ENGINE_get_pkey_meth(e, id);
 257     else
 258 # endif
 259         pmeth = evp_pkey_meth_find_added_by_application(id);
 260
 261     /* END legacy */
 262 #endif /* FIPS_MODULE */
 263  common:
 264     /*
 265      * If there's no engine and there's a name, we try fetching a provider
 266      * implementation.
 267      */
 268     if (e == NULL && keytype != NULL) {
 269         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 270         if (keymgmt == NULL)
 271             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 272
 273 #ifndef FIPS_MODULE
 274         /*
 275          * Chase down the legacy NID, as that might be needed for diverse
 276          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 277          * values, or that there's a better chance to "downgrade" a key when
 278          * needed.  We go through all keymgmt names, because the keytype
 279          * that's passed to this function doesn't necessarily translate
 280          * directly.
 281          * TODO: Remove this when #legacy keys are gone.
 282          */
 283         if (keymgmt != NULL) {
 284             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 285
 286             if (tmp_id != NID_undef) {
 287                 if (id == -1) {
 288                     id = tmp_id;
 289                 } else {
 290                     /*
 291                      * It really really shouldn't differ.  If it still does,
 292                      * something is very wrong.
 293                      */
 294                     if (!ossl_assert(id == tmp_id)) {
 295                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 296                         EVP_KEYMGMT_free(keymgmt);
 297                         return NULL;
 298                     }
 299                 }
 300             }
 301         }
 302 #endif
 303     }
 304
 305     if (pmeth == NULL && keymgmt == NULL) {
 306         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 307     } else {
 308         ret = OPENSSL_zalloc(sizeof(*ret));
 309         if (ret == NULL)
 310             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 311     }
 312
 313 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 314     if ((ret == NULL || pmeth == NULL) && e != NULL)
 315         ENGINE_finish(e);
 316 #endif
 317
 318     if (ret == NULL) {
 319         EVP_KEYMGMT_free(keymgmt);
 320         return NULL;
 321     }
 322     if (propquery != NULL) {
 323         ret->propquery = OPENSSL_strdup(propquery);
 324         if (ret->propquery == NULL) {
 325             EVP_KEYMGMT_free(keymgmt);
 326             return NULL;
 327         }
 328     }
 329     ret->libctx = libctx;
 330     ret->keytype = keytype;
 331     ret->keymgmt = keymgmt;
 332     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 333     ret->engine = e;
 334     ret->pmeth = pmeth;
 335     ret->operation = EVP_PKEY_OP_UNDEFINED;
 336     ret->pkey = pkey;
 337     if (pkey != NULL)
 338         EVP_PKEY_up_ref(pkey);
 339
 340     if (pmeth != NULL && pmeth->init != NULL) {
 341         if (pmeth->init(ret) <= 0) {
 342             ret->pmeth = NULL;
 343             EVP_PKEY_CTX_free(ret);
 344             return NULL;
 345         }
 346     }
 347
 348     return ret;
 349 }
 350
 351 /*- All methods below can also be used in FIPS_MODULE */
 352
 353 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 354                                          const char *name,
 355                                          const char *propquery)
 356 {
 357     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 358 }
 359
 360 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 361                                          const char *propquery)
 362 {
 363     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 364 }
 365
 366 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 367 {
 368     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 369         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 370             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 371         EVP_SIGNATURE_free(ctx->op.sig.signature);
 372         ctx->op.sig.sigprovctx = NULL;
 373         ctx->op.sig.signature = NULL;
 374     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 375         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 376             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 377         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 378         ctx->op.kex.exchprovctx = NULL;
 379         ctx->op.kex.exchange = NULL;
 380     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 381         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 382             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 383         EVP_KEM_free(ctx->op.encap.kem);
 384         ctx->op.encap.kemprovctx = NULL;
 385         ctx->op.encap.kem = NULL;
 386     }
 387     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 388         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 389             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 390         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 391         ctx->op.ciph.ciphprovctx = NULL;
 392         ctx->op.ciph.cipher = NULL;
 393     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 394         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 395             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 396     }
 397 }
 398
 399 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 400 {
 401     if (ctx == NULL)
 402         return;
 403     if (ctx->pmeth && ctx->pmeth->cleanup)
 404         ctx->pmeth->cleanup(ctx);
 405
 406     evp_pkey_ctx_free_old_ops(ctx);
 407 #ifndef FIPS_MODULE
 408     evp_pkey_ctx_free_all_cached_data(ctx);
 409 #endif
 410     EVP_KEYMGMT_free(ctx->keymgmt);
 411
 412     OPENSSL_free(ctx->propquery);
 413     EVP_PKEY_free(ctx->pkey);
 414     EVP_PKEY_free(ctx->peerkey);
 415 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 416     ENGINE_finish(ctx->engine);
 417 #endif
 418     BN_free(ctx->rsa_pubexp);
 419     OPENSSL_free(ctx);
 420 }
 421
 422 #ifndef FIPS_MODULE
 423
 424 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 425                              const EVP_PKEY_METHOD *meth)
 426 {
 427     if (ppkey_id)
 428         *ppkey_id = meth->pkey_id;
 429     if (pflags)
 430         *pflags = meth->flags;
 431 }
 432
 433 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 434 {
 435     int pkey_id = dst->pkey_id;
 436     int flags = dst->flags;
 437
 438     *dst = *src;
 439
 440     /* We only copy the function pointers so restore the other values */
 441     dst->pkey_id = pkey_id;
 442     dst->flags = flags;
 443 }
 444
 445 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 446 {
 447     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 448         OPENSSL_free(pmeth);
 449 }
 450
 451 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 452 {
 453     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 454 }
 455
 456 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 457 {
 458     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 459 }
 460
 461 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 462 {
 463     EVP_PKEY_CTX *rctx;
 464
 465 # ifndef OPENSSL_NO_ENGINE
 466     /* Make sure it's safe to copy a pkey context using an ENGINE */
 467     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 468         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 469         return 0;
 470     }
 471 # endif
 472     rctx = OPENSSL_zalloc(sizeof(*rctx));
 473     if (rctx == NULL) {
 474         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 475         return NULL;
 476     }
 477
 478     if (pctx->pkey != NULL)
 479         EVP_PKEY_up_ref(pctx->pkey);
 480     rctx->pkey = pctx->pkey;
 481     rctx->operation = pctx->operation;
 482     rctx->libctx = pctx->libctx;
 483     rctx->keytype = pctx->keytype;
 484     rctx->propquery = NULL;
 485     if (pctx->propquery != NULL) {
 486         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 487         if (rctx->propquery == NULL)
 488             goto err;
 489     }
 490     rctx->legacy_keytype = pctx->legacy_keytype;
 491
 492     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 493         if (pctx->op.kex.exchange != NULL) {
 494             rctx->op.kex.exchange = pctx->op.kex.exchange;
 495             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 496                 goto err;
 497         }
 498         if (pctx->op.kex.exchprovctx != NULL) {
 499             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 500                 goto err;
 501             rctx->op.kex.exchprovctx
 502                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 503             if (rctx->op.kex.exchprovctx == NULL) {
 504                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 505                 goto err;
 506             }
 507             return rctx;
 508         }
 509     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 510         if (pctx->op.sig.signature != NULL) {
 511             rctx->op.sig.signature = pctx->op.sig.signature;
 512             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 513                 goto err;
 514         }
 515         if (pctx->op.sig.sigprovctx != NULL) {
 516             if (!ossl_assert(pctx->op.sig.signature != NULL))
 517                 goto err;
 518             rctx->op.sig.sigprovctx
 519                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 520             if (rctx->op.sig.sigprovctx == NULL) {
 521                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 522                 goto err;
 523             }
 524             return rctx;
 525         }
 526     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 527         if (pctx->op.ciph.cipher != NULL) {
 528             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 529             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 530                 goto err;
 531         }
 532         if (pctx->op.ciph.ciphprovctx != NULL) {
 533             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 534                 goto err;
 535             rctx->op.ciph.ciphprovctx
 536                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 537             if (rctx->op.ciph.ciphprovctx == NULL) {
 538                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 539                 goto err;
 540             }
 541             return rctx;
 542         }
 543     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 544         if (pctx->op.encap.kem != NULL) {
 545             rctx->op.encap.kem = pctx->op.encap.kem;
 546             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 547                 goto err;
 548         }
 549         if (pctx->op.encap.kemprovctx != NULL) {
 550             if (!ossl_assert(pctx->op.encap.kem != NULL))
 551                 goto err;
 552             rctx->op.encap.kemprovctx
 553                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 554             if (rctx->op.encap.kemprovctx == NULL) {
 555                 EVP_KEM_free(rctx->op.encap.kem);
 556                 goto err;
 557             }
 558             return rctx;
 559         }
 560     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 561         /* Not supported - This would need a gen_dupctx() to work */
 562         goto err;
 563     }
 564
 565     rctx->pmeth = pctx->pmeth;
 566 # ifndef OPENSSL_NO_ENGINE
 567     rctx->engine = pctx->engine;
 568 # endif
 569
 570     if (pctx->peerkey != NULL)
 571         EVP_PKEY_up_ref(pctx->peerkey);
 572     rctx->peerkey = pctx->peerkey;
 573
 574     if (pctx->pmeth == NULL) {
 575         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 576             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 577             void *provkey;
 578
 579             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 580                                                   &tmp_keymgmt, pctx->propquery);
 581             if (provkey == NULL)
 582                 goto err;
 583             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 584                 goto err;
 585             EVP_KEYMGMT_free(rctx->keymgmt);
 586             rctx->keymgmt = tmp_keymgmt;
 587             return rctx;
 588         }
 589     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 590         return rctx;
 591     }
 592 err:
 593     rctx->pmeth = NULL;
 594     EVP_PKEY_CTX_free(rctx);
 595     return NULL;
 596 }
 597
 598 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 599 {
 600     if (app_pkey_methods == NULL) {
 601         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 602         if (app_pkey_methods == NULL){
 603             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 604             return 0;
 605         }
 606     }
 607     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 608         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 609         return 0;
 610     }
 611     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 612     return 1;
 613 }
 614
 615 void evp_app_cleanup_int(void)
 616 {
 617     if (app_pkey_methods != NULL)
 618         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 619 }
 620
 621 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 622 {
 623     const EVP_PKEY_METHOD *ret;
 624
 625     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 626
 627     return ret == NULL ? 0 : 1;
 628 }
 629
 630 size_t EVP_PKEY_meth_get_count(void)
 631 {
 632     size_t rv = OSSL_NELEM(standard_methods);
 633
 634     if (app_pkey_methods)
 635         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 636     return rv;
 637 }
 638
 639 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 640 {
 641     if (idx < OSSL_NELEM(standard_methods))
 642         return (standard_methods[idx])();
 643     if (app_pkey_methods == NULL)
 644         return NULL;
 645     idx -= OSSL_NELEM(standard_methods);
 646     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 647         return NULL;
 648     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 649 }
 650 #endif
 651
 652 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 653 {
 654     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 655             && ctx->op.kex.exchprovctx != NULL
 656             && ctx->op.kex.exchange != NULL
 657             && ctx->op.kex.exchange->set_ctx_params != NULL)
 658         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 659                                                     params);
 660     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 661             && ctx->op.sig.sigprovctx != NULL
 662             && ctx->op.sig.signature != NULL
 663             && ctx->op.sig.signature->set_ctx_params != NULL)
 664         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 665                                                      params);
 666     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 667             && ctx->op.ciph.ciphprovctx != NULL
 668             && ctx->op.ciph.cipher != NULL
 669             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 670         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 671                                                      params);
 672     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 673         && ctx->op.keymgmt.genctx != NULL
 674         && ctx->keymgmt != NULL
 675         && ctx->keymgmt->gen_set_params != NULL)
 676         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 677                                           params);
 678     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 679         && ctx->op.encap.kemprovctx != NULL
 680         && ctx->op.encap.kem != NULL
 681         && ctx->op.encap.kem->set_ctx_params != NULL)
 682         return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 683                                                  params);
 684     return 0;
 685 }
 686
 687 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 688 {
 689     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 690             && ctx->op.kex.exchprovctx != NULL
 691             && ctx->op.kex.exchange != NULL
 692             && ctx->op.kex.exchange->get_ctx_params != NULL)
 693         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 694                                                     params);
 695     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 696             && ctx->op.sig.sigprovctx != NULL
 697             && ctx->op.sig.signature != NULL
 698             && ctx->op.sig.signature->get_ctx_params != NULL)
 699         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 700                                                      params);
 701     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 702             && ctx->op.ciph.ciphprovctx != NULL
 703             && ctx->op.ciph.cipher != NULL
 704             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 705         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 706                                                    params);
 707     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 708         && ctx->op.encap.kemprovctx != NULL
 709         && ctx->op.encap.kem != NULL
 710         && ctx->op.encap.kem->get_ctx_params != NULL)
 711         return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 712                                                  params);
 713     return 0;
 714 }
 715
 716 #ifndef FIPS_MODULE
 717 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 718 {
 719     void *provctx;
 720
 721     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 722             && ctx->op.kex.exchange != NULL
 723             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 724         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 725         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 726     }
 727     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 728             && ctx->op.sig.signature != NULL
 729             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 730         provctx = ossl_provider_ctx(
 731                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 732         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 733     }
 734     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 735             && ctx->op.ciph.cipher != NULL
 736             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 737         provctx = ossl_provider_ctx(
 738                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 739         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 740     }
 741     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 742         && ctx->op.encap.kem != NULL
 743         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 744         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 745         return ctx->op.encap.kem->gettable_ctx_params(provctx);
 746     }
 747     return NULL;
 748 }
 749
 750 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 751 {
 752     void *provctx;
 753
 754     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 755             && ctx->op.kex.exchange != NULL
 756             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 757         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 758         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 759     }
 760     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 761             && ctx->op.sig.signature != NULL
 762             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 763         provctx = ossl_provider_ctx(
 764                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 765         return ctx->op.sig.signature->settable_ctx_params(provctx);
 766     }
 767     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 768             && ctx->op.ciph.cipher != NULL
 769             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 770         provctx = ossl_provider_ctx(
 771                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 772         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 773     }
 774     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 775             && ctx->keymgmt != NULL)
 776         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 777     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 778         && ctx->op.encap.kem != NULL
 779         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 780         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 781         return ctx->op.encap.kem->settable_ctx_params(provctx);
 782     }
 783     return NULL;
 784 }
 785
 786 /*
 787  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 788  *
 789  * Return 1 on success, 0 or negative for errors.
 790  *
 791  * In particular they return -2 if any of the params is not supported.
 792  *
 793  * They are not available in FIPS_MODULE as they depend on
 794  *      - EVP_PKEY_CTX_{get,set}_params()
 795  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 796  *
 797  */
 798 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 799 {
 800     const OSSL_PARAM *p;
 801
 802     if (ctx == NULL || params == NULL)
 803         return 0;
 804
 805     for (p = params; p->key != NULL; p++) {
 806         /* Check the ctx actually understands this parameter */
 807         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 808                                     p->key) == NULL )
 809             return -2;
 810     }
 811
 812     return EVP_PKEY_CTX_set_params(ctx, params);
 813 }
 814
 815 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 816 {
 817     const OSSL_PARAM *p;
 818
 819     if (ctx == NULL || params == NULL)
 820         return 0;
 821
 822     for (p = params; p->key != NULL; p++ ) {
 823         /* Check the ctx actually understands this parameter */
 824         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 825                                     p->key) == NULL )
 826             return -2;
 827     }
 828
 829     return EVP_PKEY_CTX_get_params(ctx, params);
 830 }
 831
 832 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 833 {
 834     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 835     /* 80 should be big enough */
 836     char name[80] = "";
 837     const EVP_MD *tmp;
 838
 839     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 840         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 841         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 842         return -2;
 843     }
 844
 845     /* TODO(3.0): Remove this eventually when no more legacy */
 846     if (ctx->op.sig.sigprovctx == NULL)
 847         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 848                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 849
 850     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 851                                             name,
 852                                             sizeof(name));
 853     *p = OSSL_PARAM_construct_end();
 854
 855     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 856         return 0;
 857
 858     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 859     if (tmp == NULL)
 860         return 0;
 861
 862     *md = tmp;
 863
 864     return 1;
 865 }
 866
 867 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 868                                int fallback, const char *param, int op,
 869                                int ctrl)
 870 {
 871     OSSL_PARAM md_params[2], *p = md_params;
 872     const char *name;
 873
 874     if (ctx == NULL || (ctx->operation & op) == 0) {
 875         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 876         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 877         return -2;
 878     }
 879
 880     /* TODO(3.0): Remove this eventually when no more legacy */
 881     if (fallback)
 882         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 883
 884     if (md == NULL) {
 885         name = "";
 886     } else {
 887         name = EVP_MD_name(md);
 888     }
 889
 890     *p++ = OSSL_PARAM_construct_utf8_string(param,
 891                                             /*
 892                                              * Cast away the const. This is read
 893                                              * only so should be safe
 894                                              */
 895                                             (char *)name, 0);
 896     *p = OSSL_PARAM_construct_end();
 897
 898     return EVP_PKEY_CTX_set_params(ctx, md_params);
 899 }
 900
 901 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 902 {
 903     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 904                                OSSL_SIGNATURE_PARAM_DIGEST,
 905                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 906 }
 907
 908 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 909 {
 910     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 911                                OSSL_KDF_PARAM_DIGEST,
 912                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 913 }
 914
 915 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 916                                           const char *param, int op, int ctrl,
 917                                           const unsigned char *data,
 918                                           int datalen)
 919 {
 920     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 921
 922     if (ctx == NULL || (ctx->operation & op) == 0) {
 923         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 924         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 925         return -2;
 926     }
 927
 928     /* TODO(3.0): Remove this eventually when no more legacy */
 929     if (fallback)
 930         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 931
 932     if (datalen < 0) {
 933         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 934         return 0;
 935     }
 936
 937     *p++ = OSSL_PARAM_construct_octet_string(param,
 938                                             /*
 939                                              * Cast away the const. This is read
 940                                              * only so should be safe
 941                                              */
 942                                             (unsigned char *)data,
 943                                             (size_t)datalen);
 944     *p = OSSL_PARAM_construct_end();
 945
 946     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 947 }
 948
 949 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 950                                       const unsigned char *sec, int seclen)
 951 {
 952     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 953                                           OSSL_KDF_PARAM_SECRET,
 954                                           EVP_PKEY_OP_DERIVE,
 955                                           EVP_PKEY_CTRL_TLS_SECRET,
 956                                           sec, seclen);
 957 }
 958
 959 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 960                                     const unsigned char *seed, int seedlen)
 961 {
 962     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 963                                           OSSL_KDF_PARAM_SEED,
 964                                           EVP_PKEY_OP_DERIVE,
 965                                           EVP_PKEY_CTRL_TLS_SEED,
 966                                           seed, seedlen);
 967 }
 968
 969 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 970 {
 971     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 972                                OSSL_KDF_PARAM_DIGEST,
 973                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 974 }
 975
 976 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 977                                 const unsigned char *salt, int saltlen)
 978 {
 979     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 980                                           OSSL_KDF_PARAM_SALT,
 981                                           EVP_PKEY_OP_DERIVE,
 982                                           EVP_PKEY_CTRL_HKDF_SALT,
 983                                           salt, saltlen);
 984 }
 985
 986 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 987                                       const unsigned char *key, int keylen)
 988 {
 989     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 990                                           OSSL_KDF_PARAM_KEY,
 991                                           EVP_PKEY_OP_DERIVE,
 992                                           EVP_PKEY_CTRL_HKDF_KEY,
 993                                           key, keylen);
 994 }
 995
 996 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
 997                                       const unsigned char *info, int infolen)
 998 {
 999     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1000                                           OSSL_KDF_PARAM_INFO,
1001                                           EVP_PKEY_OP_DERIVE,
1002                                           EVP_PKEY_CTRL_HKDF_INFO,
1003                                           info, infolen);
1004 }
1005
1006 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1007 {
1008     OSSL_PARAM int_params[2], *p = int_params;
1009
1010     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1011         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1012         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1013         return -2;
1014     }
1015
1016     /* TODO(3.0): Remove this eventually when no more legacy */
1017     if (ctx->op.kex.exchprovctx == NULL)
1018         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1019                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1020
1021
1022     if (mode < 0) {
1023         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1024         return 0;
1025     }
1026
1027     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1028     *p = OSSL_PARAM_construct_end();
1029
1030     return EVP_PKEY_CTX_set_params(ctx, int_params);
1031 }
1032
1033 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1034                                int passlen)
1035 {
1036     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1037                                           OSSL_KDF_PARAM_PASSWORD,
1038                                           EVP_PKEY_OP_DERIVE,
1039                                           EVP_PKEY_CTRL_PASS,
1040                                           (const unsigned char *)pass, passlen);
1041 }
1042
1043 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1044                                   const unsigned char *salt, int saltlen)
1045 {
1046     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1047                                           OSSL_KDF_PARAM_SALT,
1048                                           EVP_PKEY_OP_DERIVE,
1049                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1050                                           salt, saltlen);
1051 }
1052
1053 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1054                                    int op, int ctrl, uint64_t val)
1055 {
1056     OSSL_PARAM uint64_params[2], *p = uint64_params;
1057
1058     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1059         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1060         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1061         return -2;
1062     }
1063
1064     /* TODO(3.0): Remove this eventually when no more legacy */
1065     if (ctx->op.kex.exchprovctx == NULL)
1066         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1067
1068     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1069     *p = OSSL_PARAM_construct_end();
1070
1071     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1072 }
1073
1074 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1075 {
1076     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1077                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1078                                    n);
1079 }
1080
1081 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1082 {
1083     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1084                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1085                                    r);
1086 }
1087
1088 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1089 {
1090     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1091                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1092                                    p);
1093 }
1094
1095 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1096                                          uint64_t maxmem_bytes)
1097 {
1098     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1099                                    EVP_PKEY_OP_DERIVE,
1100                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1101                                    maxmem_bytes);
1102 }
1103
1104 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1105                              int keylen)
1106 {
1107     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1108                                           OSSL_PKEY_PARAM_PRIV_KEY,
1109                                           EVP_PKEY_OP_KEYGEN,
1110                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1111                                           key, keylen);
1112 }
1113
1114 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1115 {
1116     OSSL_PARAM params[2], *p = params;
1117
1118     if (ctx == NULL || op == NULL) {
1119         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1120         return 0;
1121     }
1122     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1123         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1124         return -2;
1125     }
1126     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1127                                             (char *)op, 0);
1128     *p = OSSL_PARAM_construct_end();
1129     return EVP_PKEY_CTX_set_params(ctx, params);
1130 }
1131
1132 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1133 {
1134     OSSL_PARAM params[2], *p = params;
1135     int ret;
1136
1137     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1138         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1139         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1140         return -2;
1141     }
1142
1143     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1144                                              /*
1145                                               * Cast away the const. This is
1146                                               * read only so should be safe
1147                                               */
1148                                              (void *)id, (size_t)len);
1149     *p++ = OSSL_PARAM_construct_end();
1150
1151     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1152     if (ret == -2)
1153         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1154     return ret;
1155 }
1156
1157 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1158 {
1159     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1160                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1161 }
1162
1163 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1164 {
1165     int ret;
1166     void *tmp_id = NULL;
1167     OSSL_PARAM params[2], *p = params;
1168
1169     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1170         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1171         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1172         return -2;
1173     }
1174
1175     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1176                                           &tmp_id, 0);
1177     *p++ = OSSL_PARAM_construct_end();
1178
1179     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1180     if (ret == -2) {
1181         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1182     } else if (ret > 0) {
1183         size_t tmp_id_len = params[0].return_size;
1184
1185         if (id != NULL)
1186             memcpy(id, tmp_id, tmp_id_len);
1187         if (id_len != NULL)
1188             *id_len = tmp_id_len;
1189     }
1190     return ret;
1191 }
1192
1193 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1194 {
1195     return get1_id_data(ctx, id, NULL);
1196 }
1197
1198 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1199 {
1200     return get1_id_data(ctx, NULL, id_len);
1201 }
1202
1203 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1204 {
1205     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1206 }
1207
1208 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1209 {
1210     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1211                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1212 }
1213
1214 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1215                                 int cmd, int p1, void *p2)
1216 {
1217     switch (cmd) {
1218     case EVP_PKEY_CTRL_SET1_ID:
1219         return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1220     case EVP_PKEY_CTRL_GET1_ID:
1221         return evp_pkey_ctx_get1_id_prov(ctx, p2);
1222     case EVP_PKEY_CTRL_GET1_ID_LEN:
1223         return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1224     }
1225
1226     if (keytype == EVP_PKEY_DHX) {
1227         switch (cmd) {
1228         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1229             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1230         case EVP_PKEY_CTRL_DH_KDF_MD:
1231             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1232         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1233             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1234         case EVP_PKEY_CTRL_DH_KDF_UKM:
1235             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1236         case EVP_PKEY_CTRL_DH_KDF_OID:
1237             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1238         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1239             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1240         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1241             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1242         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1243             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1244         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1245             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1246         }
1247     }
1248     if (keytype == EVP_PKEY_DH) {
1249         switch (cmd) {
1250             case EVP_PKEY_CTRL_DH_PAD:
1251                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1252             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1253                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1254             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1255                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1256             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1257                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1258             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1259                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1260             case EVP_PKEY_CTRL_DH_RFC5114:
1261                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1262         }
1263     }
1264     if (keytype == EVP_PKEY_DSA) {
1265         switch (cmd) {
1266         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1267             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1268         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1269             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1270         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1271             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1272         }
1273     }
1274     if (keytype == EVP_PKEY_EC) {
1275         switch (cmd) {
1276         case EVP_PKEY_CTRL_EC_PARAM_ENC:
1277             return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1278         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1279             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1280         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1281             if (p1 == -2) {
1282                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1283             } else if (p1 < -1 || p1 > 1) {
1284                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1285                 return -2;
1286             } else {
1287                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1288             }
1289         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1290             if (p1 == -2) {
1291                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1292             } else {
1293                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1294             }
1295         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1296             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1297         case EVP_PKEY_CTRL_EC_KDF_MD:
1298             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1299         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1300             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1301         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1302             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1303         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1304             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1305         case EVP_PKEY_CTRL_EC_KDF_UKM:
1306             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1307         }
1308     }
1309     if (keytype == EVP_PKEY_RSA) {
1310         switch (cmd) {
1311         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1312             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1313         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1314             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1315         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1316             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1317         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1318             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1319         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1320             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1321         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1322             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1323         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1324             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1325         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1326             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1327         }
1328     }
1329
1330     if (keytype == EVP_PKEY_RSA_PSS) {
1331       switch(cmd) {
1332         case EVP_PKEY_CTRL_MD:
1333           return EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, p2);
1334       }
1335     }
1336
1337     /*
1338      * keytype == -1 is used when several key types share the same structure,
1339      * or for generic controls that are the same across multiple key types.
1340      */
1341     if (keytype == -1) {
1342         if (optype == EVP_PKEY_OP_DERIVE) {
1343             switch (cmd) {
1344             /* TLS1-PRF */
1345             case EVP_PKEY_CTRL_TLS_MD:
1346                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1347             case EVP_PKEY_CTRL_TLS_SECRET:
1348                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1349             case EVP_PKEY_CTRL_TLS_SEED:
1350                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1351
1352             /* HKDF */
1353             case EVP_PKEY_CTRL_HKDF_MD:
1354                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1355             case EVP_PKEY_CTRL_HKDF_SALT :
1356                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1357             case EVP_PKEY_CTRL_HKDF_KEY:
1358                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1359             case EVP_PKEY_CTRL_HKDF_INFO:
1360                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1361             case EVP_PKEY_CTRL_HKDF_MODE:
1362                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1363
1364             /* Scrypt */
1365             case EVP_PKEY_CTRL_PASS:
1366                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1367             case EVP_PKEY_CTRL_SCRYPT_SALT:
1368                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1369             case EVP_PKEY_CTRL_SCRYPT_N:
1370                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1371             case EVP_PKEY_CTRL_SCRYPT_R:
1372                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1373             case EVP_PKEY_CTRL_SCRYPT_P:
1374                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1375             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1376                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1377             }
1378         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1379             OSSL_PARAM params[2], *p = params;
1380
1381             switch (cmd) {
1382             case EVP_PKEY_CTRL_CIPHER:
1383                 {
1384                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1385
1386                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1387                                                             ciphname, 0);
1388                     *p = OSSL_PARAM_construct_end();
1389
1390                     return EVP_PKEY_CTX_set_params(ctx, params);
1391                 }
1392             case EVP_PKEY_CTRL_SET_MAC_KEY:
1393                 {
1394                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1395                                                              p2, p1);
1396                     *p = OSSL_PARAM_construct_end();
1397
1398                     return EVP_PKEY_CTX_set_params(ctx, params);
1399                 }
1400             }
1401         }
1402         switch (cmd) {
1403         case EVP_PKEY_CTRL_MD:
1404             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1405         case EVP_PKEY_CTRL_GET_MD:
1406             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1407         case EVP_PKEY_CTRL_RSA_PADDING:
1408             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1409         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1410             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1411         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1412             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1413         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1414             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1415         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1416             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1417         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1418         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1419 # ifndef OPENSSL_NO_CMS
1420         case EVP_PKEY_CTRL_CMS_DECRYPT:
1421         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1422 # endif
1423             /* TODO (3.0) Temporary hack, this should probe */
1424             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1425                 return 1;
1426             ERR_raise(ERR_LIB_EVP,
1427                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1428             return -2;
1429         }
1430     }
1431
1432     /*
1433      * GOST CMS format is different for different cipher algorithms.
1434      * Most of other algorithms don't have such a difference
1435      * so this ctrl is just ignored.
1436      */
1437     if (cmd == EVP_PKEY_CTRL_CIPHER)
1438         return -2;
1439
1440     return 0;
1441 }
1442
1443 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1444                                  int cmd, int p1, void *p2)
1445 {
1446     int ret = 0;
1447
1448     /*
1449      * If the method has a |digest_custom| function, we can relax the
1450      * operation type check, since this can be called before the operation
1451      * is initialized.
1452      */
1453     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1454         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1455             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1456             return -1;
1457         }
1458
1459         if ((optype != -1) && !(ctx->operation & optype)) {
1460             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1461             return -1;
1462         }
1463     }
1464
1465     switch (evp_pkey_ctx_state(ctx)) {
1466     case EVP_PKEY_STATE_PROVIDER:
1467         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1468     case EVP_PKEY_STATE_UNKNOWN:
1469     case EVP_PKEY_STATE_LEGACY:
1470         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1471             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1472             return -2;
1473         }
1474         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1475             return -1;
1476
1477         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1478
1479         if (ret == -2)
1480             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1481         break;
1482     }
1483     return ret;
1484 }
1485
1486 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1487                       int cmd, int p1, void *p2)
1488 {
1489     int ret = 0;
1490
1491     if (ctx == NULL) {
1492         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1493         return -2;
1494     }
1495     /* If unsupported, we don't want that reported here */
1496     ERR_set_mark();
1497     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1498                                          cmd, NULL, p2, p1);
1499     if (ret == -2) {
1500         ERR_pop_to_mark();
1501     } else {
1502         ERR_clear_last_mark();
1503         /*
1504          * If there was an error, there was an error.
1505          * If the operation isn't initialized yet, we also return, as
1506          * the saved values will be used then anyway.
1507          */
1508         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1509             return ret;
1510     }
1511     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1512 }
1513
1514 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1515                              int cmd, uint64_t value)
1516 {
1517     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1518 }
1519
1520 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1521                                     const char *value)
1522 {
1523     if (strcmp(name, "md") == 0)
1524         name = OSSL_ALG_PARAM_DIGEST;
1525     else if (strcmp(name, "rsa_padding_mode") == 0)
1526         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1527     else if (strcmp(name, "rsa_mgf1_md") == 0)
1528         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1529     else if (strcmp(name, "rsa_oaep_md") == 0)
1530         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1531     else if (strcmp(name, "rsa_oaep_label") == 0)
1532         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1533     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1534         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1535     else if (strcmp(name, "rsa_keygen_bits") == 0)
1536         name = OSSL_PKEY_PARAM_RSA_BITS;
1537     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1538         name = OSSL_PKEY_PARAM_RSA_E;
1539     else if (strcmp(name, "rsa_keygen_primes") == 0)
1540         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1541     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1542         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1543     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1544         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1545     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1546         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1547     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1548         name = OSSL_PKEY_PARAM_FFC_PBITS;
1549     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1550         name = OSSL_PKEY_PARAM_FFC_QBITS;
1551     else if (strcmp(name, "dsa_paramgen_md") == 0)
1552         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1553     else if (strcmp(name, "dh_paramgen_generator") == 0)
1554         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1555     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1556         name = OSSL_PKEY_PARAM_FFC_PBITS;
1557     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1558         name = OSSL_PKEY_PARAM_FFC_QBITS;
1559     else if (strcmp(name, "dh_paramgen_type") == 0) {
1560         name = OSSL_PKEY_PARAM_FFC_TYPE;
1561         value = dh_gen_type_id2name(atoi(value));
1562     } else if (strcmp(name, "dh_param") == 0)
1563         name = OSSL_PKEY_PARAM_GROUP_NAME;
1564     else if (strcmp(name, "dh_rfc5114") == 0) {
1565         int num = atoi(value);
1566
1567         name = OSSL_PKEY_PARAM_GROUP_NAME;
1568         value =
1569             ossl_ffc_named_group_get_name(ossl_ffc_uid_to_dh_named_group(num));
1570     } else if (strcmp(name, "dh_pad") == 0)
1571         name = OSSL_EXCHANGE_PARAM_PAD;
1572     else if (strcmp(name, "ec_paramgen_curve") == 0)
1573         name = OSSL_PKEY_PARAM_GROUP_NAME;
1574     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1575         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1576     else if (strcmp(name, "ecdh_kdf_md") == 0)
1577         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1578     else if (strcmp(name, "ec_param_enc") == 0)
1579         name = OSSL_PKEY_PARAM_EC_ENCODING;
1580     else if (strcmp(name, "N") == 0)
1581         name = OSSL_KDF_PARAM_SCRYPT_N;
1582
1583     {
1584         /*
1585          * TODO(3.0) reduce the code above to only translate known legacy
1586          * string to the corresponding core name (see core_names.h), but
1587          * otherwise leave it to this code block to do the actual work.
1588          */
1589         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1590         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1591         int rv = 0;
1592         int exists = 0;
1593
1594         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1595                                            strlen(value), &exists)) {
1596             if (!exists) {
1597                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1598                                "name=%s,value=%s", name, value);
1599                 return -2;
1600             }
1601             return 0;
1602         }
1603         if (EVP_PKEY_CTX_set_params(ctx, params))
1604             rv = 1;
1605         OPENSSL_free(params[0].data);
1606         return rv;
1607     }
1608 }
1609
1610 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1611                                      const char *name, const char *value)
1612 {
1613     int ret = 0;
1614
1615     if (ctx == NULL) {
1616         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1617         return -2;
1618     }
1619
1620     switch (evp_pkey_ctx_state(ctx)) {
1621     case EVP_PKEY_STATE_PROVIDER:
1622         return legacy_ctrl_str_to_param(ctx, name, value);
1623     case EVP_PKEY_STATE_UNKNOWN:
1624     case EVP_PKEY_STATE_LEGACY:
1625         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1626             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1627             return -2;
1628         }
1629         if (strcmp(name, "digest") == 0)
1630             ret = EVP_PKEY_CTX_md(ctx,
1631                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1632                                   EVP_PKEY_CTRL_MD, value);
1633         else
1634             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1635         break;
1636     }
1637
1638     return ret;
1639 }
1640
1641 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1642                           const char *name, const char *value)
1643 {
1644     int ret = 0;
1645
1646     /* If unsupported, we don't want that reported here */
1647     ERR_set_mark();
1648     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1649                                          name, value, strlen(value) + 1);
1650     if (ret == -2) {
1651         ERR_pop_to_mark();
1652     } else {
1653         ERR_clear_last_mark();
1654         /*
1655          * If there was an error, there was an error.
1656          * If the operation isn't initialized yet, we also return, as
1657          * the saved values will be used then anyway.
1658          */
1659         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1660             return ret;
1661     }
1662
1663     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1664 }
1665
1666 static int decode_cmd(int cmd, const char *name)
1667 {
1668     if (cmd == -1) {
1669         /*
1670          * The consequence of the assertion not being true is that this
1671          * function will return -1, which will cause the calling functions
1672          * to signal that the command is unsupported...  in non-debug mode.
1673          */
1674         if (ossl_assert(name != NULL))
1675             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1676                 cmd = EVP_PKEY_CTRL_SET1_ID;
1677     }
1678
1679     return cmd;
1680 }
1681
1682 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1683                                           int keytype, int optype,
1684                                           int cmd, const char *name,
1685                                           const void *data, size_t data_len)
1686 {
1687     if (keytype != -1) {
1688         switch (evp_pkey_ctx_state(ctx)) {
1689         case EVP_PKEY_STATE_PROVIDER:
1690             if (ctx->keymgmt == NULL) {
1691                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1692                 return -2;
1693             }
1694             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1695                                   evp_pkey_type2name(keytype))) {
1696                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1697                 return -1;
1698             }
1699             break;
1700         case EVP_PKEY_STATE_UNKNOWN:
1701         case EVP_PKEY_STATE_LEGACY:
1702             if (ctx->pmeth == NULL) {
1703                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1704                 return -2;
1705             }
1706             if (ctx->pmeth->pkey_id != keytype) {
1707                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1708                 return -1;
1709             }
1710             break;
1711         }
1712     }
1713     if (optype != -1 && (ctx->operation & optype) == 0) {
1714         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1715         return -1;
1716     }
1717
1718     cmd = decode_cmd(cmd, name);
1719     switch (cmd) {
1720     case EVP_PKEY_CTRL_SET1_ID:
1721         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1722         if (name != NULL) {
1723             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1724             if (ctx->cached_parameters.dist_id_name == NULL) {
1725                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1726                 return 0;
1727             }
1728         }
1729         if (data_len > 0) {
1730             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1731             if (ctx->cached_parameters.dist_id == NULL) {
1732                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1733                 return 0;
1734             }
1735         }
1736         ctx->cached_parameters.dist_id_set = 1;
1737         ctx->cached_parameters.dist_id_len = data_len;
1738         return 1;
1739     }
1740
1741     ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1742     return -2;
1743 }
1744
1745 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1746                                           int cmd, const char *name)
1747 {
1748     cmd = decode_cmd(cmd, name);
1749     switch (cmd) {
1750     case EVP_PKEY_CTRL_SET1_ID:
1751         OPENSSL_free(ctx->cached_parameters.dist_id);
1752         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1753         ctx->cached_parameters.dist_id = NULL;
1754         ctx->cached_parameters.dist_id_name = NULL;
1755         break;
1756     }
1757 }
1758
1759 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1760 {
1761     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1762 }
1763
1764 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1765 {
1766     int ret = 1;
1767
1768     if (ret && ctx->cached_parameters.dist_id_set) {
1769         const char *name = ctx->cached_parameters.dist_id_name;
1770         const void *val = ctx->cached_parameters.dist_id;
1771         size_t len = ctx->cached_parameters.dist_id_len;
1772
1773         if (name != NULL)
1774             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1775         else
1776             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1777                                         EVP_PKEY_CTRL_SET1_ID,
1778                                         (int)len, (void *)val);
1779     }
1780
1781     return ret;
1782 }
1783
1784 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1785 {
1786     return ctx->libctx;
1787 }
1788
1789 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1790 {
1791     return ctx->propquery;
1792 }
1793
1794 /* Utility functions to send a string of hex string to a ctrl */
1795
1796 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1797 {
1798     size_t len;
1799
1800     len = strlen(str);
1801     if (len > INT_MAX)
1802         return -1;
1803     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1804 }
1805
1806 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1807 {
1808     unsigned char *bin;
1809     long binlen;
1810     int rv = -1;
1811
1812     bin = OPENSSL_hexstr2buf(hex, &binlen);
1813     if (bin == NULL)
1814         return 0;
1815     if (binlen <= INT_MAX)
1816         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1817     OPENSSL_free(bin);
1818     return rv;
1819 }
1820
1821 /* Pass a message digest to a ctrl */
1822 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1823 {
1824     const EVP_MD *m;
1825
1826     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1827         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1828         return 0;
1829     }
1830     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1831 }
1832
1833 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1834 {
1835     return ctx->operation;
1836 }
1837
1838 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1839 {
1840     ctx->keygen_info = dat;
1841     ctx->keygen_info_count = datlen;
1842 }
1843
1844 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1845 {
1846     ctx->data = data;
1847 }
1848
1849 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1850 {
1851     return ctx->data;
1852 }
1853
1854 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1855 {
1856     return ctx->pkey;
1857 }
1858
1859 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1860 {
1861     return ctx->peerkey;
1862 }
1863
1864 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1865 {
1866     ctx->app_data = data;
1867 }
1868
1869 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1870 {
1871     return ctx->app_data;
1872 }
1873
1874 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1875                             int (*init) (EVP_PKEY_CTX *ctx))
1876 {
1877     pmeth->init = init;
1878 }
1879
1880 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1881                             int (*copy) (EVP_PKEY_CTX *dst,
1882                                          const EVP_PKEY_CTX *src))
1883 {
1884     pmeth->copy = copy;
1885 }
1886
1887 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1888                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1889 {
1890     pmeth->cleanup = cleanup;
1891 }
1892
1893 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1894                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1895                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1896                                                  EVP_PKEY *pkey))
1897 {
1898     pmeth->paramgen_init = paramgen_init;
1899     pmeth->paramgen = paramgen;
1900 }
1901
1902 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1903                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1904                               int (*keygen) (EVP_PKEY_CTX *ctx,
1905                                              EVP_PKEY *pkey))
1906 {
1907     pmeth->keygen_init = keygen_init;
1908     pmeth->keygen = keygen;
1909 }
1910
1911 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1912                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1913                             int (*sign) (EVP_PKEY_CTX *ctx,
1914                                          unsigned char *sig, size_t *siglen,
1915                                          const unsigned char *tbs,
1916                                          size_t tbslen))
1917 {
1918     pmeth->sign_init = sign_init;
1919     pmeth->sign = sign;
1920 }
1921
1922 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1923                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1924                               int (*verify) (EVP_PKEY_CTX *ctx,
1925                                              const unsigned char *sig,
1926                                              size_t siglen,
1927                                              const unsigned char *tbs,
1928                                              size_t tbslen))
1929 {
1930     pmeth->verify_init = verify_init;
1931     pmeth->verify = verify;
1932 }
1933
1934 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1935                                       int (*verify_recover_init) (EVP_PKEY_CTX
1936                                                                   *ctx),
1937                                       int (*verify_recover) (EVP_PKEY_CTX
1938                                                              *ctx,
1939                                                              unsigned char
1940                                                              *sig,
1941                                                              size_t *siglen,
1942                                                              const unsigned
1943                                                              char *tbs,
1944                                                              size_t tbslen))
1945 {
1946     pmeth->verify_recover_init = verify_recover_init;
1947     pmeth->verify_recover = verify_recover;
1948 }
1949
1950 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1951                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1952                                                     EVP_MD_CTX *mctx),
1953                                int (*signctx) (EVP_PKEY_CTX *ctx,
1954                                                unsigned char *sig,
1955                                                size_t *siglen,
1956                                                EVP_MD_CTX *mctx))
1957 {
1958     pmeth->signctx_init = signctx_init;
1959     pmeth->signctx = signctx;
1960 }
1961
1962 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1963                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1964                                                         EVP_MD_CTX *mctx),
1965                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1966                                                    const unsigned char *sig,
1967                                                    int siglen,
1968                                                    EVP_MD_CTX *mctx))
1969 {
1970     pmeth->verifyctx_init = verifyctx_init;
1971     pmeth->verifyctx = verifyctx;
1972 }
1973
1974 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1975                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1976                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1977                                                  unsigned char *out,
1978                                                  size_t *outlen,
1979                                                  const unsigned char *in,
1980                                                  size_t inlen))
1981 {
1982     pmeth->encrypt_init = encrypt_init;
1983     pmeth->encrypt = encryptfn;
1984 }
1985
1986 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1987                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1988                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1989                                                unsigned char *out,
1990                                                size_t *outlen,
1991                                                const unsigned char *in,
1992                                                size_t inlen))
1993 {
1994     pmeth->decrypt_init = decrypt_init;
1995     pmeth->decrypt = decrypt;
1996 }
1997
1998 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1999                               int (*derive_init) (EVP_PKEY_CTX *ctx),
2000                               int (*derive) (EVP_PKEY_CTX *ctx,
2001                                              unsigned char *key,
2002                                              size_t *keylen))
2003 {
2004     pmeth->derive_init = derive_init;
2005     pmeth->derive = derive;
2006 }
2007
2008 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
2009                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2010                                          void *p2),
2011                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
2012                                              const char *type,
2013                                              const char *value))
2014 {
2015     pmeth->ctrl = ctrl;
2016     pmeth->ctrl_str = ctrl_str;
2017 }
2018
2019 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
2020     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2021                        const unsigned char *tbs, size_t tbslen))
2022 {
2023     pmeth->digestsign = digestsign;
2024 }
2025
2026 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
2027     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2028                          size_t siglen, const unsigned char *tbs,
2029                          size_t tbslen))
2030 {
2031     pmeth->digestverify = digestverify;
2032 }
2033
2034 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
2035                              int (*check) (EVP_PKEY *pkey))
2036 {
2037     pmeth->check = check;
2038 }
2039
2040 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
2041                                     int (*check) (EVP_PKEY *pkey))
2042 {
2043     pmeth->public_check = check;
2044 }
2045
2046 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
2047                                    int (*check) (EVP_PKEY *pkey))
2048 {
2049     pmeth->param_check = check;
2050 }
2051
2052 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
2053                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
2054                                                            EVP_MD_CTX *mctx))
2055 {
2056     pmeth->digest_custom = digest_custom;
2057 }
2058
2059 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
2060                             int (**pinit) (EVP_PKEY_CTX *ctx))
2061 {
2062     *pinit = pmeth->init;
2063 }
2064
2065 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2066                             int (**pcopy) (EVP_PKEY_CTX *dst,
2067                                            const EVP_PKEY_CTX *src))
2068 {
2069     *pcopy = pmeth->copy;
2070 }
2071
2072 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2073                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
2074 {
2075     *pcleanup = pmeth->cleanup;
2076 }
2077
2078 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2079                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2080                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2081                                                    EVP_PKEY *pkey))
2082 {
2083     if (pparamgen_init)
2084         *pparamgen_init = pmeth->paramgen_init;
2085     if (pparamgen)
2086         *pparamgen = pmeth->paramgen;
2087 }
2088
2089 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2090                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2091                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
2092                                                EVP_PKEY *pkey))
2093 {
2094     if (pkeygen_init)
2095         *pkeygen_init = pmeth->keygen_init;
2096     if (pkeygen)
2097         *pkeygen = pmeth->keygen;
2098 }
2099
2100 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2101                             int (**psign_init) (EVP_PKEY_CTX *ctx),
2102                             int (**psign) (EVP_PKEY_CTX *ctx,
2103                                            unsigned char *sig, size_t *siglen,
2104                                            const unsigned char *tbs,
2105                                            size_t tbslen))
2106 {
2107     if (psign_init)
2108         *psign_init = pmeth->sign_init;
2109     if (psign)
2110         *psign = pmeth->sign;
2111 }
2112
2113 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2114                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
2115                               int (**pverify) (EVP_PKEY_CTX *ctx,
2116                                                const unsigned char *sig,
2117                                                size_t siglen,
2118                                                const unsigned char *tbs,
2119                                                size_t tbslen))
2120 {
2121     if (pverify_init)
2122         *pverify_init = pmeth->verify_init;
2123     if (pverify)
2124         *pverify = pmeth->verify;
2125 }
2126
2127 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2128                                       int (**pverify_recover_init) (EVP_PKEY_CTX
2129                                                                     *ctx),
2130                                       int (**pverify_recover) (EVP_PKEY_CTX
2131                                                                *ctx,
2132                                                                unsigned char
2133                                                                *sig,
2134                                                                size_t *siglen,
2135                                                                const unsigned
2136                                                                char *tbs,
2137                                                                size_t tbslen))
2138 {
2139     if (pverify_recover_init)
2140         *pverify_recover_init = pmeth->verify_recover_init;
2141     if (pverify_recover)
2142         *pverify_recover = pmeth->verify_recover;
2143 }
2144
2145 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2146                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2147                                                       EVP_MD_CTX *mctx),
2148                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2149                                                  unsigned char *sig,
2150                                                  size_t *siglen,
2151                                                  EVP_MD_CTX *mctx))
2152 {
2153     if (psignctx_init)
2154         *psignctx_init = pmeth->signctx_init;
2155     if (psignctx)
2156         *psignctx = pmeth->signctx;
2157 }
2158
2159 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2160                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2161                                                           EVP_MD_CTX *mctx),
2162                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2163                                                      const unsigned char *sig,
2164                                                      int siglen,
2165                                                      EVP_MD_CTX *mctx))
2166 {
2167     if (pverifyctx_init)
2168         *pverifyctx_init = pmeth->verifyctx_init;
2169     if (pverifyctx)
2170         *pverifyctx = pmeth->verifyctx;
2171 }
2172
2173 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2174                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2175                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2176                                                    unsigned char *out,
2177                                                    size_t *outlen,
2178                                                    const unsigned char *in,
2179                                                    size_t inlen))
2180 {
2181     if (pencrypt_init)
2182         *pencrypt_init = pmeth->encrypt_init;
2183     if (pencryptfn)
2184         *pencryptfn = pmeth->encrypt;
2185 }
2186
2187 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2188                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2189                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2190                                                  unsigned char *out,
2191                                                  size_t *outlen,
2192                                                  const unsigned char *in,
2193                                                  size_t inlen))
2194 {
2195     if (pdecrypt_init)
2196         *pdecrypt_init = pmeth->decrypt_init;
2197     if (pdecrypt)
2198         *pdecrypt = pmeth->decrypt;
2199 }
2200
2201 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2202                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2203                               int (**pderive) (EVP_PKEY_CTX *ctx,
2204                                                unsigned char *key,
2205                                                size_t *keylen))
2206 {
2207     if (pderive_init)
2208         *pderive_init = pmeth->derive_init;
2209     if (pderive)
2210         *pderive = pmeth->derive;
2211 }
2212
2213 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2214                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2215                                            void *p2),
2216                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2217                                                const char *type,
2218                                                const char *value))
2219 {
2220     if (pctrl)
2221         *pctrl = pmeth->ctrl;
2222     if (pctrl_str)
2223         *pctrl_str = pmeth->ctrl_str;
2224 }
2225
2226 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2227     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2228                         const unsigned char *tbs, size_t tbslen))
2229 {
2230     if (digestsign)
2231         *digestsign = pmeth->digestsign;
2232 }
2233
2234 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2235     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2236                           size_t siglen, const unsigned char *tbs,
2237                           size_t tbslen))
2238 {
2239     if (digestverify)
2240         *digestverify = pmeth->digestverify;
2241 }
2242
2243 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2244                              int (**pcheck) (EVP_PKEY *pkey))
2245 {
2246     if (pcheck != NULL)
2247         *pcheck = pmeth->check;
2248 }
2249
2250 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2251                                     int (**pcheck) (EVP_PKEY *pkey))
2252 {
2253     if (pcheck != NULL)
2254         *pcheck = pmeth->public_check;
2255 }
2256
2257 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2258                                    int (**pcheck) (EVP_PKEY *pkey))
2259 {
2260     if (pcheck != NULL)
2261         *pcheck = pmeth->param_check;
2262 }
2263
2264 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2265                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2266                                                              EVP_MD_CTX *mctx))
2267 {
2268     if (pdigest_custom != NULL)
2269         *pdigest_custom = pmeth->digest_custom;
2270 }
2271
2272 #endif /* FIPS_MODULE */