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     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     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 # ifndef OPENSSL_NO_SM2
  79     sm2_pkey_method,
  80 # endif
  81 };
  82
  83 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  84
  85 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  86 {
  87     return ((*a)->pkey_id - ((**b)())->pkey_id);
  88 }
  89
  90 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  91
  92 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  93                      const EVP_PKEY_METHOD *const *b)
  94 {
  95     return ((*a)->pkey_id - (*b)->pkey_id);
  96 }
  97
  98 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  99 {
 100     pmeth_fn *ret;
 101     EVP_PKEY_METHOD tmp;
 102     const EVP_PKEY_METHOD *t = &tmp;
 103
 104     tmp.pkey_id = type;
 105     if (app_pkey_methods) {
 106         int idx;
 107         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 108         if (idx >= 0)
 109             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 110     }
 111     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 112                                  sizeof(standard_methods) /
 113                                  sizeof(pmeth_fn));
 114     if (ret == NULL || *ret == NULL)
 115         return NULL;
 116     return (**ret)();
 117 }
 118
 119 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 120 {
 121     EVP_PKEY_METHOD *pmeth;
 122
 123     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 124     if (pmeth == NULL) {
 125         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 126         return NULL;
 127     }
 128
 129     pmeth->pkey_id = id;
 130     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 131     return pmeth;
 132 }
 133
 134 /* Three possible states: */
 135 # define EVP_PKEY_STATE_UNKNOWN         0
 136 # define EVP_PKEY_STATE_LEGACY          1
 137 # define EVP_PKEY_STATE_PROVIDER        2
 138
 139 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
 140 {
 141     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 142         return EVP_PKEY_STATE_UNKNOWN;
 143
 144     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 145          && ctx->op.kex.exchprovctx != NULL)
 146         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 147             && ctx->op.sig.sigprovctx != NULL)
 148         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 149             && ctx->op.ciph.ciphprovctx != NULL)
 150         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 151             && ctx->op.keymgmt.genctx != NULL))
 152         return EVP_PKEY_STATE_PROVIDER;
 153
 154     return EVP_PKEY_STATE_LEGACY;
 155 }
 156
 157 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 158                                                   void *arg)
 159 {
 160     int *type = arg;
 161
 162     if (*type == NID_undef)
 163         *type = evp_pkey_name2type(keytype);
 164 }
 165
 166 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 167 {
 168     int type = NID_undef;
 169
 170     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 171                              &type);
 172     return type;
 173 }
 174 #endif /* FIPS_MODULE */
 175
 176 static int is_legacy_alg(int id, const char *keytype)
 177 {
 178 #ifndef FIPS_MODULE
 179     /* Certain EVP_PKEY keytypes are only available in legacy form */
 180     if (id == -1)
 181         id = evp_pkey_name2type(keytype);
 182
 183     switch (id) {
 184     /*
 185      * TODO(3.0): Remove SM2 when they are converted to have provider
 186      * support
 187      */
 188     case EVP_PKEY_SM2:
 189         return 1;
 190     default:
 191         return 0;
 192     }
 193 #else
 194     return 0;
 195 #endif
 196 }
 197
 198 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 199                                  EVP_PKEY *pkey, ENGINE *e,
 200                                  const char *keytype, const char *propquery,
 201                                  int id)
 202
 203 {
 204     EVP_PKEY_CTX *ret = NULL;
 205     const EVP_PKEY_METHOD *pmeth = NULL;
 206     EVP_KEYMGMT *keymgmt = NULL;
 207
 208     /*
 209      * If the given |pkey| is provided, we extract the keytype from its
 210      * keymgmt and skip over the legacy code.
 211      */
 212     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 213         /* If we have an engine, something went wrong somewhere... */
 214         if (!ossl_assert(e == NULL))
 215             return NULL;
 216         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 217         goto common;
 218     }
 219
 220 #ifndef FIPS_MODULE
 221     /*
 222      * TODO(3.0) This legacy code section should be removed when we stop
 223      * supporting engines
 224      */
 225     /* BEGIN legacy */
 226     if (id == -1) {
 227         if (pkey != NULL)
 228             id = pkey->type;
 229         else if (keytype != NULL)
 230             id = evp_pkey_name2type(keytype);
 231         if (id == NID_undef)
 232             id = -1;
 233     }
 234     /* If no ID was found here, we can only resort to find a keymgmt */
 235     if (id == -1)
 236         goto common;
 237
 238     /*
 239      * Here, we extract what information we can for the purpose of
 240      * supporting usage with implementations from providers, to make
 241      * for a smooth transition from legacy stuff to provider based stuff.
 242      *
 243      * If an engine is given, this is entirely legacy, and we should not
 244      * pretend anything else, so we only set the name when no engine is
 245      * given.  If both are already given, someone made a mistake, and
 246      * since that can only happen internally, it's safe to make an
 247      * assertion.
 248      */
 249     if (!ossl_assert(e == NULL || keytype == NULL))
 250         return NULL;
 251     if (e == NULL)
 252         keytype = OBJ_nid2sn(id);
 253
 254 # ifndef OPENSSL_NO_ENGINE
 255     if (e == NULL && pkey != NULL)
 256         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 257     /* Try to find an ENGINE which implements this method */
 258     if (e) {
 259         if (!ENGINE_init(e)) {
 260             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 261             return NULL;
 262         }
 263     } else {
 264         e = ENGINE_get_pkey_meth_engine(id);
 265     }
 266
 267     /*
 268      * If an ENGINE handled this method look it up. Otherwise use internal
 269      * tables.
 270      */
 271     if (e != NULL)
 272         pmeth = ENGINE_get_pkey_meth(e, id);
 273     else
 274 # endif
 275         pmeth = EVP_PKEY_meth_find(id);
 276
 277     /* END legacy */
 278 #endif /* FIPS_MODULE */
 279  common:
 280     /*
 281      * If there's no engine and there's a name, we try fetching a provider
 282      * implementation.
 283      */
 284     if (e == NULL && keytype != NULL) {
 285         int legacy = is_legacy_alg(id, keytype);
 286
 287         /* This could fail so ignore errors */
 288         if (legacy)
 289             ERR_set_mark();
 290
 291         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 292         if (legacy)
 293             ERR_pop_to_mark();
 294         else if (keymgmt == NULL)
 295             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 296
 297 #ifndef FIPS_MODULE
 298         /*
 299          * Chase down the legacy NID, as that might be needed for diverse
 300          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 301          * values, or that there's a better chance to "downgrade" a key when
 302          * needed.  We go through all keymgmt names, because the keytype
 303          * that's passed to this function doesn't necessarily translate
 304          * directly.
 305          * TODO: Remove this when #legacy keys are gone.
 306          */
 307         if (keymgmt != NULL) {
 308             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 309
 310             if (tmp_id != NID_undef) {
 311                 if (id == -1) {
 312                     id = tmp_id;
 313                 } else {
 314                     /*
 315                      * It really really shouldn't differ.  If it still does,
 316                      * something is very wrong.
 317                      */
 318                     if (!ossl_assert(id == tmp_id)) {
 319                         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_INTERNAL_ERROR);
 320                         EVP_KEYMGMT_free(keymgmt);
 321                         return NULL;
 322                     }
 323                 }
 324             }
 325         }
 326 #endif
 327     }
 328
 329     if (pmeth == NULL && keymgmt == NULL) {
 330         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 331     } else {
 332         ret = OPENSSL_zalloc(sizeof(*ret));
 333         if (ret == NULL)
 334             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 335     }
 336
 337 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 338     if ((ret == NULL || pmeth == NULL) && e != NULL)
 339         ENGINE_finish(e);
 340 #endif
 341
 342     if (ret == NULL) {
 343         EVP_KEYMGMT_free(keymgmt);
 344         return NULL;
 345     }
 346
 347     ret->libctx = libctx;
 348     ret->propquery = propquery;
 349     ret->keytype = keytype;
 350     ret->keymgmt = keymgmt;
 351     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 352     ret->engine = e;
 353     ret->pmeth = pmeth;
 354     ret->operation = EVP_PKEY_OP_UNDEFINED;
 355     ret->pkey = pkey;
 356     if (pkey != NULL)
 357         EVP_PKEY_up_ref(pkey);
 358
 359     if (pmeth != NULL && pmeth->init != NULL) {
 360         if (pmeth->init(ret) <= 0) {
 361             ret->pmeth = NULL;
 362             EVP_PKEY_CTX_free(ret);
 363             return NULL;
 364         }
 365     }
 366
 367     return ret;
 368 }
 369
 370 /*- All methods below can also be used in FIPS_MODULE */
 371
 372 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 373                                          const char *name,
 374                                          const char *propquery)
 375 {
 376     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 377 }
 378
 379 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 380                                          const char *propquery)
 381 {
 382     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 383 }
 384
 385 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 386 {
 387     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 388         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 389             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 390         EVP_SIGNATURE_free(ctx->op.sig.signature);
 391         ctx->op.sig.sigprovctx = NULL;
 392         ctx->op.sig.signature = NULL;
 393     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 394         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 395             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 396         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 397         ctx->op.kex.exchprovctx = NULL;
 398         ctx->op.kex.exchange = NULL;
 399     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 400         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 401             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 402         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 403         ctx->op.ciph.ciphprovctx = NULL;
 404         ctx->op.ciph.cipher = NULL;
 405     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 406         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 407             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 408     }
 409 }
 410
 411 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 412 {
 413     if (ctx == NULL)
 414         return;
 415     if (ctx->pmeth && ctx->pmeth->cleanup)
 416         ctx->pmeth->cleanup(ctx);
 417
 418     evp_pkey_ctx_free_old_ops(ctx);
 419 #ifndef FIPS_MODULE
 420     evp_pkey_ctx_free_all_cached_data(ctx);
 421 #endif
 422     EVP_KEYMGMT_free(ctx->keymgmt);
 423
 424     EVP_PKEY_free(ctx->pkey);
 425     EVP_PKEY_free(ctx->peerkey);
 426 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 427     ENGINE_finish(ctx->engine);
 428 #endif
 429     OPENSSL_free(ctx);
 430 }
 431
 432 #ifndef FIPS_MODULE
 433
 434 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 435                              const EVP_PKEY_METHOD *meth)
 436 {
 437     if (ppkey_id)
 438         *ppkey_id = meth->pkey_id;
 439     if (pflags)
 440         *pflags = meth->flags;
 441 }
 442
 443 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 444 {
 445     int pkey_id = dst->pkey_id;
 446     int flags = dst->flags;
 447
 448     *dst = *src;
 449
 450     /* We only copy the function pointers so restore the other values */
 451     dst->pkey_id = pkey_id;
 452     dst->flags = flags;
 453 }
 454
 455 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 456 {
 457     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 458         OPENSSL_free(pmeth);
 459 }
 460
 461 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 462 {
 463     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 464 }
 465
 466 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 467 {
 468     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 469 }
 470
 471 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 472 {
 473     EVP_PKEY_CTX *rctx;
 474
 475     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 476             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 477                  && pctx->op.kex.exchprovctx == NULL)
 478                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 479                     && pctx->op.sig.sigprovctx == NULL)))
 480         return NULL;
 481 # ifndef OPENSSL_NO_ENGINE
 482     /* Make sure it's safe to copy a pkey context using an ENGINE */
 483     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 484         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 485         return 0;
 486     }
 487 # endif
 488     rctx = OPENSSL_zalloc(sizeof(*rctx));
 489     if (rctx == NULL) {
 490         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 491         return NULL;
 492     }
 493
 494     if (pctx->pkey != NULL)
 495         EVP_PKEY_up_ref(pctx->pkey);
 496     rctx->pkey = pctx->pkey;
 497     rctx->operation = pctx->operation;
 498     rctx->libctx = pctx->libctx;
 499     rctx->keytype = pctx->keytype;
 500     rctx->propquery = pctx->propquery;
 501
 502     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 503         if (pctx->op.kex.exchange != NULL) {
 504             rctx->op.kex.exchange = pctx->op.kex.exchange;
 505             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 506                 OPENSSL_free(rctx);
 507                 return NULL;
 508             }
 509         }
 510         if (pctx->op.kex.exchprovctx != NULL) {
 511             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 512                 return NULL;
 513             rctx->op.kex.exchprovctx
 514                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 515             if (rctx->op.kex.exchprovctx == NULL) {
 516                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 517                 OPENSSL_free(rctx);
 518                 return NULL;
 519             }
 520             return rctx;
 521         }
 522     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 523         if (pctx->op.sig.signature != NULL) {
 524             rctx->op.sig.signature = pctx->op.sig.signature;
 525             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 526                 OPENSSL_free(rctx);
 527                 return NULL;
 528             }
 529         }
 530         if (pctx->op.sig.sigprovctx != NULL) {
 531             if (!ossl_assert(pctx->op.sig.signature != NULL))
 532                 return NULL;
 533             rctx->op.sig.sigprovctx
 534                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 535             if (rctx->op.sig.sigprovctx == NULL) {
 536                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 537                 OPENSSL_free(rctx);
 538                 return NULL;
 539             }
 540             return rctx;
 541         }
 542     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 543         if (pctx->op.ciph.cipher != NULL) {
 544             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 545             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 546                 OPENSSL_free(rctx);
 547                 return NULL;
 548             }
 549         }
 550         if (pctx->op.ciph.ciphprovctx != NULL) {
 551             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 552                 return NULL;
 553             rctx->op.ciph.ciphprovctx
 554                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 555             if (rctx->op.ciph.ciphprovctx == NULL) {
 556                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 557                 OPENSSL_free(rctx);
 558                 return NULL;
 559             }
 560             return rctx;
 561         }
 562     }
 563
 564     rctx->pmeth = pctx->pmeth;
 565 # ifndef OPENSSL_NO_ENGINE
 566     rctx->engine = pctx->engine;
 567 # endif
 568
 569     if (pctx->peerkey)
 570         EVP_PKEY_up_ref(pctx->peerkey);
 571     rctx->peerkey = pctx->peerkey;
 572
 573     if (pctx->pmeth->copy(rctx, pctx) > 0)
 574         return rctx;
 575
 576     rctx->pmeth = NULL;
 577     EVP_PKEY_CTX_free(rctx);
 578     return NULL;
 579
 580 }
 581
 582 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 583 {
 584     if (app_pkey_methods == NULL) {
 585         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 586         if (app_pkey_methods == NULL){
 587             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 588             return 0;
 589         }
 590     }
 591     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 592         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 593         return 0;
 594     }
 595     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 596     return 1;
 597 }
 598
 599 void evp_app_cleanup_int(void)
 600 {
 601     if (app_pkey_methods != NULL)
 602         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 603 }
 604
 605 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 606 {
 607     const EVP_PKEY_METHOD *ret;
 608
 609     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 610
 611     return ret == NULL ? 0 : 1;
 612 }
 613
 614 size_t EVP_PKEY_meth_get_count(void)
 615 {
 616     size_t rv = OSSL_NELEM(standard_methods);
 617
 618     if (app_pkey_methods)
 619         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 620     return rv;
 621 }
 622
 623 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 624 {
 625     if (idx < OSSL_NELEM(standard_methods))
 626         return (standard_methods[idx])();
 627     if (app_pkey_methods == NULL)
 628         return NULL;
 629     idx -= OSSL_NELEM(standard_methods);
 630     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 631         return NULL;
 632     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 633 }
 634 #endif
 635
 636 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 637 {
 638     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 639             && ctx->op.kex.exchprovctx != NULL
 640             && ctx->op.kex.exchange != NULL
 641             && ctx->op.kex.exchange->set_ctx_params != NULL)
 642         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 643                                                     params);
 644     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 645             && ctx->op.sig.sigprovctx != NULL
 646             && ctx->op.sig.signature != NULL
 647             && ctx->op.sig.signature->set_ctx_params != NULL)
 648         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 649                                                      params);
 650     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 651             && ctx->op.ciph.ciphprovctx != NULL
 652             && ctx->op.ciph.cipher != NULL
 653             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 654         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 655                                                      params);
 656     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 657         && ctx->op.keymgmt.genctx != NULL
 658         && ctx->keymgmt != NULL
 659         && ctx->keymgmt->gen_set_params != NULL)
 660         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 661                                           params);
 662     return 0;
 663 }
 664
 665 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 666 {
 667     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 668             && ctx->op.kex.exchprovctx != NULL
 669             && ctx->op.kex.exchange != NULL
 670             && ctx->op.kex.exchange->get_ctx_params != NULL)
 671         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 672                                                     params);
 673     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 674             && ctx->op.sig.sigprovctx != NULL
 675             && ctx->op.sig.signature != NULL
 676             && ctx->op.sig.signature->get_ctx_params != NULL)
 677         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 678                                                      params);
 679     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 680             && ctx->op.ciph.ciphprovctx != NULL
 681             && ctx->op.ciph.cipher != NULL
 682             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 683         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 684                                                    params);
 685     return 0;
 686 }
 687
 688 #ifndef FIPS_MODULE
 689 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 690 {
 691     void *provctx;
 692
 693     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 694             && ctx->op.kex.exchange != NULL
 695             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 696         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 697         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 698     }
 699     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 700             && ctx->op.sig.signature != NULL
 701             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 702         provctx = ossl_provider_ctx(
 703                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 704         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 705     }
 706     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 707             && ctx->op.ciph.cipher != NULL
 708             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 709         provctx = ossl_provider_ctx(
 710                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 711         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 712     }
 713     return NULL;
 714 }
 715
 716 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 717 {
 718     void *provctx;
 719
 720     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 721             && ctx->op.kex.exchange != NULL
 722             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 723         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 724         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 725     }
 726     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 727             && ctx->op.sig.signature != NULL
 728             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 729         provctx = ossl_provider_ctx(
 730                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 731         return ctx->op.sig.signature->settable_ctx_params(provctx);
 732     }
 733     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 734             && ctx->op.ciph.cipher != NULL
 735             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 736         provctx = ossl_provider_ctx(
 737                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 738         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 739     }
 740     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 741             && ctx->keymgmt != NULL)
 742         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 743
 744     return NULL;
 745 }
 746
 747 /*
 748  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 749  *
 750  * Return 1 on success, 0 or negative for errors.
 751  *
 752  * In particular they return -2 if any of the params is not supported.
 753  *
 754  * They are not available in FIPS_MODULE as they depend on
 755  *      - EVP_PKEY_CTX_{get,set}_params()
 756  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 757  *
 758  */
 759 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 760 {
 761     const OSSL_PARAM *p;
 762
 763     if (ctx == NULL || params == NULL)
 764         return 0;
 765
 766     for (p = params; p->key != NULL; p++) {
 767         /* Check the ctx actually understands this parameter */
 768         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 769                                     p->key) == NULL )
 770             return -2;
 771     }
 772
 773     return EVP_PKEY_CTX_set_params(ctx, params);
 774 }
 775
 776 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 777 {
 778     const OSSL_PARAM *p;
 779
 780     if (ctx == NULL || params == NULL)
 781         return 0;
 782
 783     for (p = params; p->key != NULL; p++ ) {
 784         /* Check the ctx actually understands this parameter */
 785         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 786                                     p->key) == NULL )
 787             return -2;
 788     }
 789
 790     return EVP_PKEY_CTX_get_params(ctx, params);
 791 }
 792
 793 # ifndef OPENSSL_NO_DH
 794 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 795 {
 796     OSSL_PARAM dh_pad_params[2];
 797     unsigned int upad = pad;
 798
 799     /* We use EVP_PKEY_CTX_ctrl return values */
 800     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 801         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 802         return -2;
 803     }
 804
 805     /* TODO(3.0): Remove this eventually when no more legacy */
 806     if (ctx->op.kex.exchprovctx == NULL)
 807         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 808                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 809
 810     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 811     dh_pad_params[1] = OSSL_PARAM_construct_end();
 812
 813     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 814 }
 815 # endif
 816
 817 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 818 {
 819     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 820     /* 80 should be big enough */
 821     char name[80] = "";
 822     const EVP_MD *tmp;
 823
 824     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 825         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 826         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 827         return -2;
 828     }
 829
 830     /* TODO(3.0): Remove this eventually when no more legacy */
 831     if (ctx->op.sig.sigprovctx == NULL)
 832         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 833                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 834
 835     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 836                                             name,
 837                                             sizeof(name));
 838     *p = OSSL_PARAM_construct_end();
 839
 840     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 841         return 0;
 842
 843     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 844     if (tmp == NULL)
 845         return 0;
 846
 847     *md = tmp;
 848
 849     return 1;
 850 }
 851
 852 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 853                                int fallback, const char *param, int op,
 854                                int ctrl)
 855 {
 856     OSSL_PARAM md_params[2], *p = md_params;
 857     const char *name;
 858
 859     if (ctx == NULL || (ctx->operation & op) == 0) {
 860         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 861         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 862         return -2;
 863     }
 864
 865     /* TODO(3.0): Remove this eventually when no more legacy */
 866     if (fallback)
 867         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 868
 869     if (md == NULL) {
 870         name = "";
 871     } else {
 872         name = EVP_MD_name(md);
 873     }
 874
 875     *p++ = OSSL_PARAM_construct_utf8_string(param,
 876                                             /*
 877                                              * Cast away the const. This is read
 878                                              * only so should be safe
 879                                              */
 880                                             (char *)name, 0);
 881     *p = OSSL_PARAM_construct_end();
 882
 883     return EVP_PKEY_CTX_set_params(ctx, md_params);
 884 }
 885
 886 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 887 {
 888     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 889                                OSSL_SIGNATURE_PARAM_DIGEST,
 890                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 891 }
 892
 893 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 894 {
 895     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 896                                OSSL_KDF_PARAM_DIGEST,
 897                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 898 }
 899
 900 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 901                                           const char *param, int op, int ctrl,
 902                                           const unsigned char *data,
 903                                           int datalen)
 904 {
 905     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 906
 907     if (ctx == NULL || (ctx->operation & op) == 0) {
 908         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 909         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 910         return -2;
 911     }
 912
 913     /* TODO(3.0): Remove this eventually when no more legacy */
 914     if (fallback)
 915         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 916
 917     if (datalen < 0) {
 918         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 919         return 0;
 920     }
 921
 922     *p++ = OSSL_PARAM_construct_octet_string(param,
 923                                             /*
 924                                              * Cast away the const. This is read
 925                                              * only so should be safe
 926                                              */
 927                                             (unsigned char *)data,
 928                                             (size_t)datalen);
 929     *p = OSSL_PARAM_construct_end();
 930
 931     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 932 }
 933
 934 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 935                                       const unsigned char *sec, int seclen)
 936 {
 937     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 938                                           OSSL_KDF_PARAM_SECRET,
 939                                           EVP_PKEY_OP_DERIVE,
 940                                           EVP_PKEY_CTRL_TLS_SECRET,
 941                                           sec, seclen);
 942 }
 943
 944 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 945                                     const unsigned char *seed, int seedlen)
 946 {
 947     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 948                                           OSSL_KDF_PARAM_SEED,
 949                                           EVP_PKEY_OP_DERIVE,
 950                                           EVP_PKEY_CTRL_TLS_SEED,
 951                                           seed, seedlen);
 952 }
 953
 954 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 955 {
 956     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 957                                OSSL_KDF_PARAM_DIGEST,
 958                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 959 }
 960
 961 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 962                                 const unsigned char *salt, int saltlen)
 963 {
 964     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 965                                           OSSL_KDF_PARAM_SALT,
 966                                           EVP_PKEY_OP_DERIVE,
 967                                           EVP_PKEY_CTRL_HKDF_SALT,
 968                                           salt, saltlen);
 969 }
 970
 971 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 972                                       const unsigned char *key, int keylen)
 973 {
 974     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 975                                           OSSL_KDF_PARAM_KEY,
 976                                           EVP_PKEY_OP_DERIVE,
 977                                           EVP_PKEY_CTRL_HKDF_KEY,
 978                                           key, keylen);
 979 }
 980
 981 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
 982                                       const unsigned char *info, int infolen)
 983 {
 984     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 985                                           OSSL_KDF_PARAM_INFO,
 986                                           EVP_PKEY_OP_DERIVE,
 987                                           EVP_PKEY_CTRL_HKDF_INFO,
 988                                           info, infolen);
 989 }
 990
 991 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
 992 {
 993     OSSL_PARAM int_params[2], *p = int_params;
 994
 995     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 996         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 997         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 998         return -2;
 999     }
1000
1001     /* TODO(3.0): Remove this eventually when no more legacy */
1002     if (ctx->op.kex.exchprovctx == NULL)
1003         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1004                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1005
1006
1007     if (mode < 0) {
1008         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1009         return 0;
1010     }
1011
1012     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1013     *p = OSSL_PARAM_construct_end();
1014
1015     return EVP_PKEY_CTX_set_params(ctx, int_params);
1016 }
1017
1018 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1019                                int passlen)
1020 {
1021     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1022                                           OSSL_KDF_PARAM_PASSWORD,
1023                                           EVP_PKEY_OP_DERIVE,
1024                                           EVP_PKEY_CTRL_PASS,
1025                                           (const unsigned char *)pass, passlen);
1026 }
1027
1028 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1029                                   const unsigned char *salt, int saltlen)
1030 {
1031     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1032                                           OSSL_KDF_PARAM_SALT,
1033                                           EVP_PKEY_OP_DERIVE,
1034                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1035                                           salt, saltlen);
1036 }
1037
1038 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1039                                    int op, int ctrl, uint64_t val)
1040 {
1041     OSSL_PARAM uint64_params[2], *p = uint64_params;
1042
1043     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1044         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1045         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1046         return -2;
1047     }
1048
1049     /* TODO(3.0): Remove this eventually when no more legacy */
1050     if (ctx->op.kex.exchprovctx == NULL)
1051         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1052
1053     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1054     *p = OSSL_PARAM_construct_end();
1055
1056     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1057 }
1058
1059 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1060 {
1061     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1062                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1063                                    n);
1064 }
1065
1066 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1067 {
1068     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1069                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1070                                    r);
1071 }
1072
1073 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1074 {
1075     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1076                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1077                                    p);
1078 }
1079
1080 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1081                                          uint64_t maxmem_bytes)
1082 {
1083     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1084                                    EVP_PKEY_OP_DERIVE,
1085                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1086                                    maxmem_bytes);
1087 }
1088
1089 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1090                              int keylen)
1091 {
1092     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1093                                           OSSL_PKEY_PARAM_PRIV_KEY,
1094                                           EVP_PKEY_OP_KEYGEN,
1095                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1096                                           key, keylen);
1097 }
1098
1099 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1100 {
1101     OSSL_PARAM params[2], *p = params;
1102     int ret;
1103
1104     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1105         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1106         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1107         return -2;
1108     }
1109
1110     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1111                                              /*
1112                                               * Cast away the const. This is
1113                                               * read only so should be safe
1114                                               */
1115                                              (void *)id, (size_t)len);
1116     *p++ = OSSL_PARAM_construct_end();
1117
1118     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1119     if (ret == -2)
1120         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1121     return ret;
1122 }
1123
1124 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1125 {
1126     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1127                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1128 }
1129
1130 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1131 {
1132     int ret;
1133     void *tmp_id = NULL;
1134     OSSL_PARAM params[2], *p = params;
1135
1136     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1137         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1138         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1139         return -2;
1140     }
1141
1142     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1143                                           &tmp_id, 0);
1144     *p++ = OSSL_PARAM_construct_end();
1145
1146     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1147     if (ret == -2) {
1148         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1149     } else if (ret > 0) {
1150         size_t tmp_id_len = params[0].return_size;
1151
1152         if (id != NULL)
1153             memcpy(id, tmp_id, tmp_id_len);
1154         if (id_len != NULL)
1155             *id_len = tmp_id_len;
1156     }
1157     return ret;
1158 }
1159
1160 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1161 {
1162     return get1_id_data(ctx, id, NULL);
1163 }
1164
1165 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1166 {
1167     return get1_id_data(ctx, NULL, id_len);
1168 }
1169
1170 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1171 {
1172     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1173 }
1174
1175 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1176 {
1177     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1178                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1179 }
1180
1181 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1182                                 int cmd, int p1, void *p2)
1183 {
1184     switch (cmd) {
1185     case EVP_PKEY_CTRL_SET1_ID:
1186         return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1187     case EVP_PKEY_CTRL_GET1_ID:
1188         return evp_pkey_ctx_get1_id_prov(ctx, p2);
1189     case EVP_PKEY_CTRL_GET1_ID_LEN:
1190         return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1191     }
1192
1193 # ifndef OPENSSL_NO_DH
1194     if (keytype == EVP_PKEY_DHX) {
1195         switch (cmd) {
1196         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1197             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1198         case EVP_PKEY_CTRL_DH_KDF_MD:
1199             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1200         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1201             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1202         case EVP_PKEY_CTRL_DH_KDF_UKM:
1203             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1204         case EVP_PKEY_CTRL_DH_KDF_OID:
1205             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1206         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1207             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1208         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1209             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1210         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1211             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1212         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1213             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1214         }
1215     }
1216     if (keytype == EVP_PKEY_DH) {
1217         switch (cmd) {
1218             case EVP_PKEY_CTRL_DH_PAD:
1219                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1220             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1221                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1222             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1223                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1224             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1225                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1226             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1227                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1228             case EVP_PKEY_CTRL_DH_RFC5114:
1229                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1230         }
1231     }
1232 # endif
1233 # ifndef OPENSSL_NO_DSA
1234     if (keytype == EVP_PKEY_DSA) {
1235         switch (cmd) {
1236         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1237             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1238         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1239             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1240         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1241             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1242         }
1243     }
1244 # endif
1245 # ifndef OPENSSL_NO_EC
1246     if (keytype == EVP_PKEY_EC) {
1247         switch (cmd) {
1248         case EVP_PKEY_CTRL_EC_PARAM_ENC:
1249             return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1250         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1251             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1252         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1253             if (p1 == -2) {
1254                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1255             } else if (p1 < -1 || p1 > 1) {
1256                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1257                 return -2;
1258             } else {
1259                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1260             }
1261         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1262             if (p1 == -2) {
1263                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1264             } else {
1265                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1266             }
1267         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1268             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1269         case EVP_PKEY_CTRL_EC_KDF_MD:
1270             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1271         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1272             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1273         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1274             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1275         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1276             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1277         case EVP_PKEY_CTRL_EC_KDF_UKM:
1278             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1279         }
1280     }
1281 # endif
1282     if (keytype == EVP_PKEY_RSA) {
1283         switch (cmd) {
1284         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1285             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1286         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1287             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1288         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1289             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1290         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1291             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1292         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1293             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1294         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1295             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1296         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1297             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1298         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1299             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1300         }
1301     }
1302     /*
1303      * keytype == -1 is used when several key types share the same structure,
1304      * or for generic controls that are the same across multiple key types.
1305      */
1306     if (keytype == -1) {
1307         if (optype == EVP_PKEY_OP_DERIVE) {
1308             switch (cmd) {
1309             /* TLS1-PRF */
1310             case EVP_PKEY_CTRL_TLS_MD:
1311                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1312             case EVP_PKEY_CTRL_TLS_SECRET:
1313                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1314             case EVP_PKEY_CTRL_TLS_SEED:
1315                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1316
1317             /* HKDF */
1318             case EVP_PKEY_CTRL_HKDF_MD:
1319                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1320             case EVP_PKEY_CTRL_HKDF_SALT :
1321                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1322             case EVP_PKEY_CTRL_HKDF_KEY:
1323                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1324             case EVP_PKEY_CTRL_HKDF_INFO:
1325                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1326             case EVP_PKEY_CTRL_HKDF_MODE:
1327                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1328
1329             /* Scrypt */
1330             case EVP_PKEY_CTRL_PASS:
1331                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1332             case EVP_PKEY_CTRL_SCRYPT_SALT:
1333                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1334             case EVP_PKEY_CTRL_SCRYPT_N:
1335                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1336             case EVP_PKEY_CTRL_SCRYPT_R:
1337                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1338             case EVP_PKEY_CTRL_SCRYPT_P:
1339                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1340             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1341                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1342             }
1343         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1344             OSSL_PARAM params[2], *p = params;
1345
1346             switch (cmd) {
1347             case EVP_PKEY_CTRL_CIPHER:
1348                 {
1349                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1350
1351                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1352                                                             ciphname, 0);
1353                     *p = OSSL_PARAM_construct_end();
1354
1355                     return EVP_PKEY_CTX_set_params(ctx, params);
1356                 }
1357             case EVP_PKEY_CTRL_SET_MAC_KEY:
1358                 {
1359                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1360                                                              p2, p1);
1361                     *p = OSSL_PARAM_construct_end();
1362
1363                     return EVP_PKEY_CTX_set_params(ctx, params);
1364                 }
1365             }
1366         }
1367         switch (cmd) {
1368         case EVP_PKEY_CTRL_MD:
1369             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1370         case EVP_PKEY_CTRL_GET_MD:
1371             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1372         case EVP_PKEY_CTRL_RSA_PADDING:
1373             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1374         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1375             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1376         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1377             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1378         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1379             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1380         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1381             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1382         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1383         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1384 # ifndef OPENSSL_NO_CMS
1385         case EVP_PKEY_CTRL_CMS_DECRYPT:
1386         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1387 # endif
1388             /* TODO (3.0) Temporary hack, this should probe */
1389             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1390                 return 1;
1391             ERR_raise(ERR_LIB_EVP,
1392                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1393             return -2;
1394         }
1395     }
1396
1397     /*
1398      * GOST CMS format is different for different cipher algorithms.
1399      * Most of other algorithms don't have such a difference
1400      * so this ctrl is just ignored.
1401      */
1402     if (cmd == EVP_PKEY_CTRL_CIPHER)
1403         return -2;
1404
1405     return 0;
1406 }
1407
1408 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1409                                  int cmd, int p1, void *p2)
1410 {
1411     int ret = 0;
1412
1413     if (ctx == NULL) {
1414         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1415         return -2;
1416     }
1417
1418     /*
1419      * If the method has a |digest_custom| function, we can relax the
1420      * operation type check, since this can be called before the operation
1421      * is initialized.
1422      */
1423     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1424         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1425             EVPerr(0, EVP_R_NO_OPERATION_SET);
1426             return -1;
1427         }
1428
1429         if ((optype != -1) && !(ctx->operation & optype)) {
1430             EVPerr(0, EVP_R_INVALID_OPERATION);
1431             return -1;
1432         }
1433     }
1434
1435     switch (evp_pkey_ctx_state(ctx)) {
1436     case EVP_PKEY_STATE_PROVIDER:
1437         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1438     case EVP_PKEY_STATE_UNKNOWN:
1439     case EVP_PKEY_STATE_LEGACY:
1440         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1441             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1442             return -2;
1443         }
1444         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1445             return -1;
1446
1447         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1448
1449         if (ret == -2)
1450             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1451         break;
1452     }
1453     return ret;
1454 }
1455
1456 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1457                       int cmd, int p1, void *p2)
1458 {
1459     int ret = 0;
1460
1461     /* If unsupported, we don't want that reported here */
1462     ERR_set_mark();
1463     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1464                                          cmd, NULL, p2, p1);
1465     if (ret == -2) {
1466         ERR_pop_to_mark();
1467     } else {
1468         ERR_clear_last_mark();
1469         /*
1470          * If there was an error, there was an error.
1471          * If the operation isn't initialized yet, we also return, as
1472          * the saved values will be used then anyway.
1473          */
1474         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1475             return ret;
1476     }
1477
1478     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1479 }
1480
1481 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1482                              int cmd, uint64_t value)
1483 {
1484     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1485 }
1486
1487 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1488                                     const char *value)
1489 {
1490     if (strcmp(name, "md") == 0)
1491         name = OSSL_ALG_PARAM_DIGEST;
1492     else if (strcmp(name, "rsa_padding_mode") == 0)
1493         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1494     else if (strcmp(name, "rsa_mgf1_md") == 0)
1495         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1496     else if (strcmp(name, "rsa_oaep_md") == 0)
1497         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1498     else if (strcmp(name, "rsa_oaep_label") == 0)
1499         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1500     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1501         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1502     else if (strcmp(name, "rsa_keygen_bits") == 0)
1503         name = OSSL_PKEY_PARAM_RSA_BITS;
1504     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1505         name = OSSL_PKEY_PARAM_RSA_E;
1506     else if (strcmp(name, "rsa_keygen_primes") == 0)
1507         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1508     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1509         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1510     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1511         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1512     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1513         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1514 # ifndef OPENSSL_NO_DSA
1515     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1516         name = OSSL_PKEY_PARAM_FFC_PBITS;
1517     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1518         name = OSSL_PKEY_PARAM_FFC_QBITS;
1519     else if (strcmp(name, "dsa_paramgen_md") == 0)
1520         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1521 # endif
1522 # ifndef OPENSSL_NO_DH
1523     else if (strcmp(name, "dh_paramgen_generator") == 0)
1524         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1525     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1526         name = OSSL_PKEY_PARAM_FFC_PBITS;
1527     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1528         name = OSSL_PKEY_PARAM_FFC_QBITS;
1529     else if (strcmp(name, "dh_paramgen_type") == 0) {
1530         name = OSSL_PKEY_PARAM_FFC_TYPE;
1531         value = dh_gen_type_id2name(atoi(value));
1532     } else if (strcmp(name, "dh_param") == 0)
1533         name = OSSL_PKEY_PARAM_GROUP_NAME;
1534     else if (strcmp(name, "dh_rfc5114") == 0) {
1535         name = OSSL_PKEY_PARAM_GROUP_NAME;
1536         value = ffc_named_group_from_uid(atoi(value));
1537     } else if (strcmp(name, "dh_pad") == 0)
1538         name = OSSL_EXCHANGE_PARAM_PAD;
1539 # endif
1540 # ifndef OPENSSL_NO_EC
1541     else if (strcmp(name, "ec_paramgen_curve") == 0)
1542         name = OSSL_PKEY_PARAM_GROUP_NAME;
1543     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1544         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1545     else if (strcmp(name, "ecdh_kdf_md") == 0)
1546         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1547     else if (strcmp(name, "ec_param_enc") == 0)
1548         name = OSSL_PKEY_PARAM_EC_ENCODING;
1549 # endif
1550     else if (strcmp(name, "N") == 0)
1551         name = OSSL_KDF_PARAM_SCRYPT_N;
1552
1553     {
1554         /*
1555          * TODO(3.0) reduce the code above to only translate known legacy
1556          * string to the corresponding core name (see core_names.h), but
1557          * otherwise leave it to this code block to do the actual work.
1558          */
1559         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1560         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1561         int rv = 0;
1562         int exists = 0;
1563
1564         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1565                                            strlen(value), &exists)) {
1566             if (!exists) {
1567                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1568                                "name=%s,value=%s", name, value);
1569                 return -2;
1570             }
1571             return 0;
1572         }
1573         if (EVP_PKEY_CTX_set_params(ctx, params))
1574             rv = 1;
1575         OPENSSL_free(params[0].data);
1576         return rv;
1577     }
1578 }
1579
1580 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1581                                      const char *name, const char *value)
1582 {
1583     int ret = 0;
1584
1585     if (ctx == NULL) {
1586         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1587         return -2;
1588     }
1589
1590     switch (evp_pkey_ctx_state(ctx)) {
1591     case EVP_PKEY_STATE_PROVIDER:
1592         return legacy_ctrl_str_to_param(ctx, name, value);
1593     case EVP_PKEY_STATE_UNKNOWN:
1594     case EVP_PKEY_STATE_LEGACY:
1595         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1596             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1597             return -2;
1598         }
1599         if (strcmp(name, "digest") == 0)
1600             ret = EVP_PKEY_CTX_md(ctx,
1601                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1602                                   EVP_PKEY_CTRL_MD, value);
1603         else
1604             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1605         break;
1606     }
1607
1608     return ret;
1609 }
1610
1611 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1612                           const char *name, const char *value)
1613 {
1614     int ret = 0;
1615
1616     /* If unsupported, we don't want that reported here */
1617     ERR_set_mark();
1618     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1619                                          name, value, strlen(value) + 1);
1620     if (ret == -2) {
1621         ERR_pop_to_mark();
1622     } else {
1623         ERR_clear_last_mark();
1624         /*
1625          * If there was an error, there was an error.
1626          * If the operation isn't initialized yet, we also return, as
1627          * the saved values will be used then anyway.
1628          */
1629         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1630             return ret;
1631     }
1632
1633     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1634 }
1635
1636 static int decode_cmd(int cmd, const char *name)
1637 {
1638     if (cmd == -1) {
1639         /*
1640          * The consequence of the assertion not being true is that this
1641          * function will return -1, which will cause the calling functions
1642          * to signal that the command is unsupported...  in non-debug mode.
1643          */
1644         if (ossl_assert(name != NULL))
1645             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1646                 cmd = EVP_PKEY_CTRL_SET1_ID;
1647     }
1648
1649     return cmd;
1650 }
1651
1652 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1653                                           int keytype, int optype,
1654                                           int cmd, const char *name,
1655                                           const void *data, size_t data_len)
1656 {
1657     if ((keytype != -1 && ctx->pmeth->pkey_id != keytype)
1658         || ((optype != -1) && !(ctx->operation & optype))) {
1659         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1660         return -1;
1661     }
1662
1663     cmd = decode_cmd(cmd, name);
1664     switch (cmd) {
1665     case EVP_PKEY_CTRL_SET1_ID:
1666         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1667         if (name != NULL) {
1668             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1669             if (ctx->cached_parameters.dist_id_name == NULL) {
1670                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1671                 return 0;
1672             }
1673         }
1674         if (data_len > 0) {
1675             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1676             if (ctx->cached_parameters.dist_id == NULL) {
1677                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1678                 return 0;
1679             }
1680         }
1681         ctx->cached_parameters.dist_id_set = 1;
1682         ctx->cached_parameters.dist_id_len = data_len;
1683         return 1;
1684     }
1685
1686     ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1687     return -2;
1688 }
1689
1690 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1691                                           int cmd, const char *name)
1692 {
1693     cmd = decode_cmd(cmd, name);
1694     switch (cmd) {
1695     case EVP_PKEY_CTRL_SET1_ID:
1696         OPENSSL_free(ctx->cached_parameters.dist_id);
1697         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1698         ctx->cached_parameters.dist_id = NULL;
1699         ctx->cached_parameters.dist_id_name = NULL;
1700         break;
1701     }
1702 }
1703
1704 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1705 {
1706     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1707 }
1708
1709 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1710 {
1711     int ret = 1;
1712
1713     if (ret && ctx->cached_parameters.dist_id_set) {
1714         const char *name = ctx->cached_parameters.dist_id_name;
1715         const void *val = ctx->cached_parameters.dist_id;
1716         size_t len = ctx->cached_parameters.dist_id_len;
1717
1718         if (name != NULL)
1719             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1720         else
1721             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1722                                         EVP_PKEY_CTRL_SET1_ID,
1723                                         (int)len, (void *)val);
1724     }
1725
1726     return ret;
1727 }
1728
1729 /* Utility functions to send a string of hex string to a ctrl */
1730
1731 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1732 {
1733     size_t len;
1734
1735     len = strlen(str);
1736     if (len > INT_MAX)
1737         return -1;
1738     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1739 }
1740
1741 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1742 {
1743     unsigned char *bin;
1744     long binlen;
1745     int rv = -1;
1746
1747     bin = OPENSSL_hexstr2buf(hex, &binlen);
1748     if (bin == NULL)
1749         return 0;
1750     if (binlen <= INT_MAX)
1751         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1752     OPENSSL_free(bin);
1753     return rv;
1754 }
1755
1756 /* Pass a message digest to a ctrl */
1757 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1758 {
1759     const EVP_MD *m;
1760
1761     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1762         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1763         return 0;
1764     }
1765     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1766 }
1767
1768 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1769 {
1770     return ctx->operation;
1771 }
1772
1773 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1774 {
1775     ctx->keygen_info = dat;
1776     ctx->keygen_info_count = datlen;
1777 }
1778
1779 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1780 {
1781     ctx->data = data;
1782 }
1783
1784 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1785 {
1786     return ctx->data;
1787 }
1788
1789 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1790 {
1791     return ctx->pkey;
1792 }
1793
1794 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1795 {
1796     return ctx->peerkey;
1797 }
1798
1799 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1800 {
1801     ctx->app_data = data;
1802 }
1803
1804 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1805 {
1806     return ctx->app_data;
1807 }
1808
1809 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1810                             int (*init) (EVP_PKEY_CTX *ctx))
1811 {
1812     pmeth->init = init;
1813 }
1814
1815 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1816                             int (*copy) (EVP_PKEY_CTX *dst,
1817                                          const EVP_PKEY_CTX *src))
1818 {
1819     pmeth->copy = copy;
1820 }
1821
1822 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1823                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1824 {
1825     pmeth->cleanup = cleanup;
1826 }
1827
1828 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1829                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1830                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1831                                                  EVP_PKEY *pkey))
1832 {
1833     pmeth->paramgen_init = paramgen_init;
1834     pmeth->paramgen = paramgen;
1835 }
1836
1837 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1838                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1839                               int (*keygen) (EVP_PKEY_CTX *ctx,
1840                                              EVP_PKEY *pkey))
1841 {
1842     pmeth->keygen_init = keygen_init;
1843     pmeth->keygen = keygen;
1844 }
1845
1846 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1847                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1848                             int (*sign) (EVP_PKEY_CTX *ctx,
1849                                          unsigned char *sig, size_t *siglen,
1850                                          const unsigned char *tbs,
1851                                          size_t tbslen))
1852 {
1853     pmeth->sign_init = sign_init;
1854     pmeth->sign = sign;
1855 }
1856
1857 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1858                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1859                               int (*verify) (EVP_PKEY_CTX *ctx,
1860                                              const unsigned char *sig,
1861                                              size_t siglen,
1862                                              const unsigned char *tbs,
1863                                              size_t tbslen))
1864 {
1865     pmeth->verify_init = verify_init;
1866     pmeth->verify = verify;
1867 }
1868
1869 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1870                                       int (*verify_recover_init) (EVP_PKEY_CTX
1871                                                                   *ctx),
1872                                       int (*verify_recover) (EVP_PKEY_CTX
1873                                                              *ctx,
1874                                                              unsigned char
1875                                                              *sig,
1876                                                              size_t *siglen,
1877                                                              const unsigned
1878                                                              char *tbs,
1879                                                              size_t tbslen))
1880 {
1881     pmeth->verify_recover_init = verify_recover_init;
1882     pmeth->verify_recover = verify_recover;
1883 }
1884
1885 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1886                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1887                                                     EVP_MD_CTX *mctx),
1888                                int (*signctx) (EVP_PKEY_CTX *ctx,
1889                                                unsigned char *sig,
1890                                                size_t *siglen,
1891                                                EVP_MD_CTX *mctx))
1892 {
1893     pmeth->signctx_init = signctx_init;
1894     pmeth->signctx = signctx;
1895 }
1896
1897 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1898                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1899                                                         EVP_MD_CTX *mctx),
1900                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1901                                                    const unsigned char *sig,
1902                                                    int siglen,
1903                                                    EVP_MD_CTX *mctx))
1904 {
1905     pmeth->verifyctx_init = verifyctx_init;
1906     pmeth->verifyctx = verifyctx;
1907 }
1908
1909 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1910                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1911                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1912                                                  unsigned char *out,
1913                                                  size_t *outlen,
1914                                                  const unsigned char *in,
1915                                                  size_t inlen))
1916 {
1917     pmeth->encrypt_init = encrypt_init;
1918     pmeth->encrypt = encryptfn;
1919 }
1920
1921 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1922                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1923                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1924                                                unsigned char *out,
1925                                                size_t *outlen,
1926                                                const unsigned char *in,
1927                                                size_t inlen))
1928 {
1929     pmeth->decrypt_init = decrypt_init;
1930     pmeth->decrypt = decrypt;
1931 }
1932
1933 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1934                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1935                               int (*derive) (EVP_PKEY_CTX *ctx,
1936                                              unsigned char *key,
1937                                              size_t *keylen))
1938 {
1939     pmeth->derive_init = derive_init;
1940     pmeth->derive = derive;
1941 }
1942
1943 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1944                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1945                                          void *p2),
1946                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1947                                              const char *type,
1948                                              const char *value))
1949 {
1950     pmeth->ctrl = ctrl;
1951     pmeth->ctrl_str = ctrl_str;
1952 }
1953
1954 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1955     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1956                        const unsigned char *tbs, size_t tbslen))
1957 {
1958     pmeth->digestsign = digestsign;
1959 }
1960
1961 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1962     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1963                          size_t siglen, const unsigned char *tbs,
1964                          size_t tbslen))
1965 {
1966     pmeth->digestverify = digestverify;
1967 }
1968
1969 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1970                              int (*check) (EVP_PKEY *pkey))
1971 {
1972     pmeth->check = check;
1973 }
1974
1975 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1976                                     int (*check) (EVP_PKEY *pkey))
1977 {
1978     pmeth->public_check = check;
1979 }
1980
1981 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1982                                    int (*check) (EVP_PKEY *pkey))
1983 {
1984     pmeth->param_check = check;
1985 }
1986
1987 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1988                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1989                                                            EVP_MD_CTX *mctx))
1990 {
1991     pmeth->digest_custom = digest_custom;
1992 }
1993
1994 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1995                             int (**pinit) (EVP_PKEY_CTX *ctx))
1996 {
1997     *pinit = pmeth->init;
1998 }
1999
2000 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2001                             int (**pcopy) (EVP_PKEY_CTX *dst,
2002                                            const EVP_PKEY_CTX *src))
2003 {
2004     *pcopy = pmeth->copy;
2005 }
2006
2007 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2008                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
2009 {
2010     *pcleanup = pmeth->cleanup;
2011 }
2012
2013 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2014                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2015                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2016                                                    EVP_PKEY *pkey))
2017 {
2018     if (pparamgen_init)
2019         *pparamgen_init = pmeth->paramgen_init;
2020     if (pparamgen)
2021         *pparamgen = pmeth->paramgen;
2022 }
2023
2024 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2025                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2026                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
2027                                                EVP_PKEY *pkey))
2028 {
2029     if (pkeygen_init)
2030         *pkeygen_init = pmeth->keygen_init;
2031     if (pkeygen)
2032         *pkeygen = pmeth->keygen;
2033 }
2034
2035 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2036                             int (**psign_init) (EVP_PKEY_CTX *ctx),
2037                             int (**psign) (EVP_PKEY_CTX *ctx,
2038                                            unsigned char *sig, size_t *siglen,
2039                                            const unsigned char *tbs,
2040                                            size_t tbslen))
2041 {
2042     if (psign_init)
2043         *psign_init = pmeth->sign_init;
2044     if (psign)
2045         *psign = pmeth->sign;
2046 }
2047
2048 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2049                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
2050                               int (**pverify) (EVP_PKEY_CTX *ctx,
2051                                                const unsigned char *sig,
2052                                                size_t siglen,
2053                                                const unsigned char *tbs,
2054                                                size_t tbslen))
2055 {
2056     if (pverify_init)
2057         *pverify_init = pmeth->verify_init;
2058     if (pverify)
2059         *pverify = pmeth->verify;
2060 }
2061
2062 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2063                                       int (**pverify_recover_init) (EVP_PKEY_CTX
2064                                                                     *ctx),
2065                                       int (**pverify_recover) (EVP_PKEY_CTX
2066                                                                *ctx,
2067                                                                unsigned char
2068                                                                *sig,
2069                                                                size_t *siglen,
2070                                                                const unsigned
2071                                                                char *tbs,
2072                                                                size_t tbslen))
2073 {
2074     if (pverify_recover_init)
2075         *pverify_recover_init = pmeth->verify_recover_init;
2076     if (pverify_recover)
2077         *pverify_recover = pmeth->verify_recover;
2078 }
2079
2080 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2081                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2082                                                       EVP_MD_CTX *mctx),
2083                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2084                                                  unsigned char *sig,
2085                                                  size_t *siglen,
2086                                                  EVP_MD_CTX *mctx))
2087 {
2088     if (psignctx_init)
2089         *psignctx_init = pmeth->signctx_init;
2090     if (psignctx)
2091         *psignctx = pmeth->signctx;
2092 }
2093
2094 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2095                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2096                                                           EVP_MD_CTX *mctx),
2097                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2098                                                      const unsigned char *sig,
2099                                                      int siglen,
2100                                                      EVP_MD_CTX *mctx))
2101 {
2102     if (pverifyctx_init)
2103         *pverifyctx_init = pmeth->verifyctx_init;
2104     if (pverifyctx)
2105         *pverifyctx = pmeth->verifyctx;
2106 }
2107
2108 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2109                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2110                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2111                                                    unsigned char *out,
2112                                                    size_t *outlen,
2113                                                    const unsigned char *in,
2114                                                    size_t inlen))
2115 {
2116     if (pencrypt_init)
2117         *pencrypt_init = pmeth->encrypt_init;
2118     if (pencryptfn)
2119         *pencryptfn = pmeth->encrypt;
2120 }
2121
2122 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2123                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2124                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2125                                                  unsigned char *out,
2126                                                  size_t *outlen,
2127                                                  const unsigned char *in,
2128                                                  size_t inlen))
2129 {
2130     if (pdecrypt_init)
2131         *pdecrypt_init = pmeth->decrypt_init;
2132     if (pdecrypt)
2133         *pdecrypt = pmeth->decrypt;
2134 }
2135
2136 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2137                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2138                               int (**pderive) (EVP_PKEY_CTX *ctx,
2139                                                unsigned char *key,
2140                                                size_t *keylen))
2141 {
2142     if (pderive_init)
2143         *pderive_init = pmeth->derive_init;
2144     if (pderive)
2145         *pderive = pmeth->derive;
2146 }
2147
2148 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2149                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2150                                            void *p2),
2151                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2152                                                const char *type,
2153                                                const char *value))
2154 {
2155     if (pctrl)
2156         *pctrl = pmeth->ctrl;
2157     if (pctrl_str)
2158         *pctrl_str = pmeth->ctrl_str;
2159 }
2160
2161 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2162     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2163                         const unsigned char *tbs, size_t tbslen))
2164 {
2165     if (digestsign)
2166         *digestsign = pmeth->digestsign;
2167 }
2168
2169 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2170     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2171                           size_t siglen, const unsigned char *tbs,
2172                           size_t tbslen))
2173 {
2174     if (digestverify)
2175         *digestverify = pmeth->digestverify;
2176 }
2177
2178 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2179                              int (**pcheck) (EVP_PKEY *pkey))
2180 {
2181     if (pcheck != NULL)
2182         *pcheck = pmeth->check;
2183 }
2184
2185 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2186                                     int (**pcheck) (EVP_PKEY *pkey))
2187 {
2188     if (pcheck != NULL)
2189         *pcheck = pmeth->public_check;
2190 }
2191
2192 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2193                                    int (**pcheck) (EVP_PKEY *pkey))
2194 {
2195     if (pcheck != NULL)
2196         *pcheck = pmeth->param_check;
2197 }
2198
2199 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2200                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2201                                                              EVP_MD_CTX *mctx))
2202 {
2203     if (pdigest_custom != NULL)
2204         *pdigest_custom = pmeth->digest_custom;
2205 }
2206
2207 #endif /* FIPS_MODULE */