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 };
  79
  80 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  81
  82 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  83 {
  84     return ((*a)->pkey_id - ((**b)())->pkey_id);
  85 }
  86
  87 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  88
  89 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  90                      const EVP_PKEY_METHOD *const *b)
  91 {
  92     return ((*a)->pkey_id - (*b)->pkey_id);
  93 }
  94
  95 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  96 {
  97     pmeth_fn *ret;
  98     EVP_PKEY_METHOD tmp;
  99     const EVP_PKEY_METHOD *t = &tmp;
 100
 101     tmp.pkey_id = type;
 102     if (app_pkey_methods) {
 103         int idx;
 104         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 105         if (idx >= 0)
 106             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 107     }
 108     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 109                                  sizeof(standard_methods) /
 110                                  sizeof(pmeth_fn));
 111     if (ret == NULL || *ret == NULL)
 112         return NULL;
 113     return (**ret)();
 114 }
 115
 116 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 117 {
 118     EVP_PKEY_METHOD *pmeth;
 119
 120     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 121     if (pmeth == NULL) {
 122         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 123         return NULL;
 124     }
 125
 126     pmeth->pkey_id = id;
 127     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 128     return pmeth;
 129 }
 130
 131 /* Three possible states: */
 132 # define EVP_PKEY_STATE_UNKNOWN         0
 133 # define EVP_PKEY_STATE_LEGACY          1
 134 # define EVP_PKEY_STATE_PROVIDER        2
 135
 136 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
 137 {
 138     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 139         return EVP_PKEY_STATE_UNKNOWN;
 140
 141     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 142          && ctx->op.kex.exchprovctx != NULL)
 143         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 144             && ctx->op.sig.sigprovctx != NULL)
 145         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 146             && ctx->op.ciph.ciphprovctx != NULL)
 147         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 148             && ctx->op.keymgmt.genctx != NULL)
 149         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 150             && ctx->op.encap.kemprovctx != NULL))
 151         return EVP_PKEY_STATE_PROVIDER;
 152
 153     return EVP_PKEY_STATE_LEGACY;
 154 }
 155
 156 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 157                                                   void *arg)
 158 {
 159     int *type = arg;
 160
 161     if (*type == NID_undef)
 162         *type = evp_pkey_name2type(keytype);
 163 }
 164
 165 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 166 {
 167     int type = NID_undef;
 168
 169     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 170                              &type);
 171     return type;
 172 }
 173 #endif /* FIPS_MODULE */
 174
 175 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 176                                  EVP_PKEY *pkey, ENGINE *e,
 177                                  const char *keytype, const char *propquery,
 178                                  int id)
 179
 180 {
 181     EVP_PKEY_CTX *ret = NULL;
 182     const EVP_PKEY_METHOD *pmeth = NULL;
 183     EVP_KEYMGMT *keymgmt = NULL;
 184
 185     /*
 186      * If the given |pkey| is provided, we extract the keytype from its
 187      * keymgmt and skip over the legacy code.
 188      */
 189     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 190         /* If we have an engine, something went wrong somewhere... */
 191         if (!ossl_assert(e == NULL))
 192             return NULL;
 193         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 194         goto common;
 195     }
 196
 197 #ifndef FIPS_MODULE
 198     /*
 199      * TODO(3.0) This legacy code section should be removed when we stop
 200      * supporting engines
 201      */
 202     /* BEGIN legacy */
 203     if (id == -1) {
 204         if (pkey != NULL)
 205             id = pkey->type;
 206         else if (keytype != NULL)
 207             id = evp_pkey_name2type(keytype);
 208         if (id == NID_undef)
 209             id = -1;
 210     }
 211     /* If no ID was found here, we can only resort to find a keymgmt */
 212     if (id == -1)
 213         goto common;
 214
 215     /*
 216      * Here, we extract what information we can for the purpose of
 217      * supporting usage with implementations from providers, to make
 218      * for a smooth transition from legacy stuff to provider based stuff.
 219      *
 220      * If an engine is given, this is entirely legacy, and we should not
 221      * pretend anything else, so we only set the name when no engine is
 222      * given.  If both are already given, someone made a mistake, and
 223      * since that can only happen internally, it's safe to make an
 224      * assertion.
 225      */
 226     if (!ossl_assert(e == NULL || keytype == NULL))
 227         return NULL;
 228     if (e == NULL)
 229         keytype = OBJ_nid2sn(id);
 230
 231 # ifndef OPENSSL_NO_ENGINE
 232     if (e == NULL && pkey != NULL)
 233         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 234     /* Try to find an ENGINE which implements this method */
 235     if (e) {
 236         if (!ENGINE_init(e)) {
 237             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 238             return NULL;
 239         }
 240     } else {
 241         e = ENGINE_get_pkey_meth_engine(id);
 242     }
 243
 244     /*
 245      * If an ENGINE handled this method look it up. Otherwise use internal
 246      * tables.
 247      */
 248     if (e != NULL)
 249         pmeth = ENGINE_get_pkey_meth(e, id);
 250     else
 251 # endif
 252         pmeth = EVP_PKEY_meth_find(id);
 253
 254     /* END legacy */
 255 #endif /* FIPS_MODULE */
 256  common:
 257     /*
 258      * If there's no engine and there's a name, we try fetching a provider
 259      * implementation.
 260      */
 261     if (e == NULL && keytype != NULL) {
 262         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 263         if (keymgmt == NULL)
 264             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 265
 266 #ifndef FIPS_MODULE
 267         /*
 268          * Chase down the legacy NID, as that might be needed for diverse
 269          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 270          * values, or that there's a better chance to "downgrade" a key when
 271          * needed.  We go through all keymgmt names, because the keytype
 272          * that's passed to this function doesn't necessarily translate
 273          * directly.
 274          * TODO: Remove this when #legacy keys are gone.
 275          */
 276         if (keymgmt != NULL) {
 277             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 278
 279             if (tmp_id != NID_undef) {
 280                 if (id == -1) {
 281                     id = tmp_id;
 282                 } else {
 283                     /*
 284                      * It really really shouldn't differ.  If it still does,
 285                      * something is very wrong.
 286                      */
 287                     if (!ossl_assert(id == tmp_id)) {
 288                         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_INTERNAL_ERROR);
 289                         EVP_KEYMGMT_free(keymgmt);
 290                         return NULL;
 291                     }
 292                 }
 293             }
 294         }
 295 #endif
 296     }
 297
 298     if (pmeth == NULL && keymgmt == NULL) {
 299         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 300     } else {
 301         ret = OPENSSL_zalloc(sizeof(*ret));
 302         if (ret == NULL)
 303             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 304     }
 305
 306 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 307     if ((ret == NULL || pmeth == NULL) && e != NULL)
 308         ENGINE_finish(e);
 309 #endif
 310
 311     if (ret == NULL) {
 312         EVP_KEYMGMT_free(keymgmt);
 313         return NULL;
 314     }
 315
 316     ret->libctx = libctx;
 317     ret->propquery = propquery;
 318     ret->keytype = keytype;
 319     ret->keymgmt = keymgmt;
 320     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 321     ret->engine = e;
 322     ret->pmeth = pmeth;
 323     ret->operation = EVP_PKEY_OP_UNDEFINED;
 324     ret->pkey = pkey;
 325     if (pkey != NULL)
 326         EVP_PKEY_up_ref(pkey);
 327
 328     if (pmeth != NULL && pmeth->init != NULL) {
 329         if (pmeth->init(ret) <= 0) {
 330             ret->pmeth = NULL;
 331             EVP_PKEY_CTX_free(ret);
 332             return NULL;
 333         }
 334     }
 335
 336     return ret;
 337 }
 338
 339 /*- All methods below can also be used in FIPS_MODULE */
 340
 341 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 342                                          const char *name,
 343                                          const char *propquery)
 344 {
 345     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 346 }
 347
 348 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 349                                          const char *propquery)
 350 {
 351     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 352 }
 353
 354 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 355 {
 356     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 357         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 358             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 359         EVP_SIGNATURE_free(ctx->op.sig.signature);
 360         ctx->op.sig.sigprovctx = NULL;
 361         ctx->op.sig.signature = NULL;
 362     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 363         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 364             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 365         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 366         ctx->op.kex.exchprovctx = NULL;
 367         ctx->op.kex.exchange = NULL;
 368     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 369         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 370             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 371         EVP_KEM_free(ctx->op.encap.kem);
 372         ctx->op.encap.kemprovctx = NULL;
 373         ctx->op.encap.kem = NULL;
 374     }
 375     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 376         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 377             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 378         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 379         ctx->op.ciph.ciphprovctx = NULL;
 380         ctx->op.ciph.cipher = NULL;
 381     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 382         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 383             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 384     }
 385 }
 386
 387 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 388 {
 389     if (ctx == NULL)
 390         return;
 391     if (ctx->pmeth && ctx->pmeth->cleanup)
 392         ctx->pmeth->cleanup(ctx);
 393
 394     evp_pkey_ctx_free_old_ops(ctx);
 395 #ifndef FIPS_MODULE
 396     evp_pkey_ctx_free_all_cached_data(ctx);
 397 #endif
 398     EVP_KEYMGMT_free(ctx->keymgmt);
 399
 400     EVP_PKEY_free(ctx->pkey);
 401     EVP_PKEY_free(ctx->peerkey);
 402 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 403     ENGINE_finish(ctx->engine);
 404 #endif
 405     BN_free(ctx->rsa_pubexp);
 406     OPENSSL_free(ctx);
 407 }
 408
 409 #ifndef FIPS_MODULE
 410
 411 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 412                              const EVP_PKEY_METHOD *meth)
 413 {
 414     if (ppkey_id)
 415         *ppkey_id = meth->pkey_id;
 416     if (pflags)
 417         *pflags = meth->flags;
 418 }
 419
 420 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 421 {
 422     int pkey_id = dst->pkey_id;
 423     int flags = dst->flags;
 424
 425     *dst = *src;
 426
 427     /* We only copy the function pointers so restore the other values */
 428     dst->pkey_id = pkey_id;
 429     dst->flags = flags;
 430 }
 431
 432 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 433 {
 434     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 435         OPENSSL_free(pmeth);
 436 }
 437
 438 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 439 {
 440     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 441 }
 442
 443 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 444 {
 445     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 446 }
 447
 448 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 449 {
 450     EVP_PKEY_CTX *rctx;
 451
 452     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 453             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 454                  && pctx->op.kex.exchprovctx == NULL)
 455                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 456                     && pctx->op.sig.sigprovctx == NULL)))
 457         return NULL;
 458 # ifndef OPENSSL_NO_ENGINE
 459     /* Make sure it's safe to copy a pkey context using an ENGINE */
 460     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 461         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 462         return 0;
 463     }
 464 # endif
 465     rctx = OPENSSL_zalloc(sizeof(*rctx));
 466     if (rctx == NULL) {
 467         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 468         return NULL;
 469     }
 470
 471     if (pctx->pkey != NULL)
 472         EVP_PKEY_up_ref(pctx->pkey);
 473     rctx->pkey = pctx->pkey;
 474     rctx->operation = pctx->operation;
 475     rctx->libctx = pctx->libctx;
 476     rctx->keytype = pctx->keytype;
 477     rctx->propquery = pctx->propquery;
 478
 479     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 480         if (pctx->op.kex.exchange != NULL) {
 481             rctx->op.kex.exchange = pctx->op.kex.exchange;
 482             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 483                 OPENSSL_free(rctx);
 484                 return NULL;
 485             }
 486         }
 487         if (pctx->op.kex.exchprovctx != NULL) {
 488             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 489                 return NULL;
 490             rctx->op.kex.exchprovctx
 491                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 492             if (rctx->op.kex.exchprovctx == NULL) {
 493                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 494                 OPENSSL_free(rctx);
 495                 return NULL;
 496             }
 497             return rctx;
 498         }
 499     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 500         if (pctx->op.sig.signature != NULL) {
 501             rctx->op.sig.signature = pctx->op.sig.signature;
 502             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 503                 OPENSSL_free(rctx);
 504                 return NULL;
 505             }
 506         }
 507         if (pctx->op.sig.sigprovctx != NULL) {
 508             if (!ossl_assert(pctx->op.sig.signature != NULL))
 509                 return NULL;
 510             rctx->op.sig.sigprovctx
 511                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 512             if (rctx->op.sig.sigprovctx == NULL) {
 513                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 514                 OPENSSL_free(rctx);
 515                 return NULL;
 516             }
 517             return rctx;
 518         }
 519     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 520         if (pctx->op.ciph.cipher != NULL) {
 521             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 522             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 523                 OPENSSL_free(rctx);
 524                 return NULL;
 525             }
 526         }
 527         if (pctx->op.ciph.ciphprovctx != NULL) {
 528             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 529                 return NULL;
 530             rctx->op.ciph.ciphprovctx
 531                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 532             if (rctx->op.ciph.ciphprovctx == NULL) {
 533                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 534                 OPENSSL_free(rctx);
 535                 return NULL;
 536             }
 537             return rctx;
 538         }
 539     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 540         if (pctx->op.encap.kem != NULL) {
 541             rctx->op.encap.kem = pctx->op.encap.kem;
 542             if (!EVP_KEM_up_ref(rctx->op.encap.kem)) {
 543                 OPENSSL_free(rctx);
 544                 return NULL;
 545             }
 546         }
 547         if (pctx->op.encap.kemprovctx != NULL) {
 548             if (!ossl_assert(pctx->op.encap.kem != NULL))
 549                 return NULL;
 550             rctx->op.encap.kemprovctx
 551                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 552             if (rctx->op.encap.kemprovctx == NULL) {
 553                 EVP_KEM_free(rctx->op.encap.kem);
 554                 OPENSSL_free(rctx);
 555                 return NULL;
 556             }
 557             return rctx;
 558         }
 559     }
 560
 561     rctx->pmeth = pctx->pmeth;
 562 # ifndef OPENSSL_NO_ENGINE
 563     rctx->engine = pctx->engine;
 564 # endif
 565
 566     if (pctx->peerkey)
 567         EVP_PKEY_up_ref(pctx->peerkey);
 568     rctx->peerkey = pctx->peerkey;
 569
 570     if (pctx->pmeth->copy(rctx, pctx) > 0)
 571         return rctx;
 572
 573     rctx->pmeth = NULL;
 574     EVP_PKEY_CTX_free(rctx);
 575     return NULL;
 576
 577 }
 578
 579 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 580 {
 581     if (app_pkey_methods == NULL) {
 582         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 583         if (app_pkey_methods == NULL){
 584             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 585             return 0;
 586         }
 587     }
 588     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 589         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 590         return 0;
 591     }
 592     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 593     return 1;
 594 }
 595
 596 void evp_app_cleanup_int(void)
 597 {
 598     if (app_pkey_methods != NULL)
 599         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 600 }
 601
 602 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 603 {
 604     const EVP_PKEY_METHOD *ret;
 605
 606     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 607
 608     return ret == NULL ? 0 : 1;
 609 }
 610
 611 size_t EVP_PKEY_meth_get_count(void)
 612 {
 613     size_t rv = OSSL_NELEM(standard_methods);
 614
 615     if (app_pkey_methods)
 616         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 617     return rv;
 618 }
 619
 620 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 621 {
 622     if (idx < OSSL_NELEM(standard_methods))
 623         return (standard_methods[idx])();
 624     if (app_pkey_methods == NULL)
 625         return NULL;
 626     idx -= OSSL_NELEM(standard_methods);
 627     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 628         return NULL;
 629     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 630 }
 631 #endif
 632
 633 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 634 {
 635     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 636             && ctx->op.kex.exchprovctx != NULL
 637             && ctx->op.kex.exchange != NULL
 638             && ctx->op.kex.exchange->set_ctx_params != NULL)
 639         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 640                                                     params);
 641     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 642             && ctx->op.sig.sigprovctx != NULL
 643             && ctx->op.sig.signature != NULL
 644             && ctx->op.sig.signature->set_ctx_params != NULL)
 645         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 646                                                      params);
 647     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 648             && ctx->op.ciph.ciphprovctx != NULL
 649             && ctx->op.ciph.cipher != NULL
 650             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 651         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 652                                                      params);
 653     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 654         && ctx->op.keymgmt.genctx != NULL
 655         && ctx->keymgmt != NULL
 656         && ctx->keymgmt->gen_set_params != NULL)
 657         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 658                                           params);
 659     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 660         && ctx->op.encap.kemprovctx != NULL
 661         && ctx->op.encap.kem != NULL
 662         && ctx->op.encap.kem->set_ctx_params != NULL)
 663         return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 664                                                  params);
 665     return 0;
 666 }
 667
 668 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 669 {
 670     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 671             && ctx->op.kex.exchprovctx != NULL
 672             && ctx->op.kex.exchange != NULL
 673             && ctx->op.kex.exchange->get_ctx_params != NULL)
 674         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 675                                                     params);
 676     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 677             && ctx->op.sig.sigprovctx != NULL
 678             && ctx->op.sig.signature != NULL
 679             && ctx->op.sig.signature->get_ctx_params != NULL)
 680         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 681                                                      params);
 682     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 683             && ctx->op.ciph.ciphprovctx != NULL
 684             && ctx->op.ciph.cipher != NULL
 685             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 686         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 687                                                    params);
 688     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 689         && ctx->op.encap.kemprovctx != NULL
 690         && ctx->op.encap.kem != NULL
 691         && ctx->op.encap.kem->get_ctx_params != NULL)
 692         return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 693                                                  params);
 694     return 0;
 695 }
 696
 697 #ifndef FIPS_MODULE
 698 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 699 {
 700     void *provctx;
 701
 702     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 703             && ctx->op.kex.exchange != NULL
 704             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 705         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 706         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 707     }
 708     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 709             && ctx->op.sig.signature != NULL
 710             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 711         provctx = ossl_provider_ctx(
 712                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 713         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 714     }
 715     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 716             && ctx->op.ciph.cipher != NULL
 717             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 718         provctx = ossl_provider_ctx(
 719                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 720         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 721     }
 722     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 723         && ctx->op.encap.kem != NULL
 724         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 725         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 726         return ctx->op.encap.kem->gettable_ctx_params(provctx);
 727     }
 728     return NULL;
 729 }
 730
 731 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 732 {
 733     void *provctx;
 734
 735     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 736             && ctx->op.kex.exchange != NULL
 737             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 738         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 739         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 740     }
 741     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 742             && ctx->op.sig.signature != NULL
 743             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 744         provctx = ossl_provider_ctx(
 745                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 746         return ctx->op.sig.signature->settable_ctx_params(provctx);
 747     }
 748     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 749             && ctx->op.ciph.cipher != NULL
 750             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 751         provctx = ossl_provider_ctx(
 752                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 753         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 754     }
 755     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 756             && ctx->keymgmt != NULL)
 757         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 758     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 759         && ctx->op.encap.kem != NULL
 760         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 761         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 762         return ctx->op.encap.kem->settable_ctx_params(provctx);
 763     }
 764     return NULL;
 765 }
 766
 767 /*
 768  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 769  *
 770  * Return 1 on success, 0 or negative for errors.
 771  *
 772  * In particular they return -2 if any of the params is not supported.
 773  *
 774  * They are not available in FIPS_MODULE as they depend on
 775  *      - EVP_PKEY_CTX_{get,set}_params()
 776  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 777  *
 778  */
 779 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 780 {
 781     const OSSL_PARAM *p;
 782
 783     if (ctx == NULL || params == NULL)
 784         return 0;
 785
 786     for (p = params; p->key != NULL; p++) {
 787         /* Check the ctx actually understands this parameter */
 788         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 789                                     p->key) == NULL )
 790             return -2;
 791     }
 792
 793     return EVP_PKEY_CTX_set_params(ctx, params);
 794 }
 795
 796 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 797 {
 798     const OSSL_PARAM *p;
 799
 800     if (ctx == NULL || params == NULL)
 801         return 0;
 802
 803     for (p = params; p->key != NULL; p++ ) {
 804         /* Check the ctx actually understands this parameter */
 805         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 806                                     p->key) == NULL )
 807             return -2;
 808     }
 809
 810     return EVP_PKEY_CTX_get_params(ctx, params);
 811 }
 812
 813 # ifndef OPENSSL_NO_DH
 814 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 815 {
 816     OSSL_PARAM dh_pad_params[2];
 817     unsigned int upad = pad;
 818
 819     /* We use EVP_PKEY_CTX_ctrl return values */
 820     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 821         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 822         return -2;
 823     }
 824
 825     /* TODO(3.0): Remove this eventually when no more legacy */
 826     if (ctx->op.kex.exchprovctx == NULL)
 827         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 828                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 829
 830     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 831     dh_pad_params[1] = OSSL_PARAM_construct_end();
 832
 833     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 834 }
 835 # endif
 836
 837 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 838 {
 839     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 840     /* 80 should be big enough */
 841     char name[80] = "";
 842     const EVP_MD *tmp;
 843
 844     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 845         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 846         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 847         return -2;
 848     }
 849
 850     /* TODO(3.0): Remove this eventually when no more legacy */
 851     if (ctx->op.sig.sigprovctx == NULL)
 852         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 853                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 854
 855     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 856                                             name,
 857                                             sizeof(name));
 858     *p = OSSL_PARAM_construct_end();
 859
 860     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 861         return 0;
 862
 863     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 864     if (tmp == NULL)
 865         return 0;
 866
 867     *md = tmp;
 868
 869     return 1;
 870 }
 871
 872 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 873                                int fallback, const char *param, int op,
 874                                int ctrl)
 875 {
 876     OSSL_PARAM md_params[2], *p = md_params;
 877     const char *name;
 878
 879     if (ctx == NULL || (ctx->operation & op) == 0) {
 880         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 881         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 882         return -2;
 883     }
 884
 885     /* TODO(3.0): Remove this eventually when no more legacy */
 886     if (fallback)
 887         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 888
 889     if (md == NULL) {
 890         name = "";
 891     } else {
 892         name = EVP_MD_name(md);
 893     }
 894
 895     *p++ = OSSL_PARAM_construct_utf8_string(param,
 896                                             /*
 897                                              * Cast away the const. This is read
 898                                              * only so should be safe
 899                                              */
 900                                             (char *)name, 0);
 901     *p = OSSL_PARAM_construct_end();
 902
 903     return EVP_PKEY_CTX_set_params(ctx, md_params);
 904 }
 905
 906 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 907 {
 908     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 909                                OSSL_SIGNATURE_PARAM_DIGEST,
 910                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 911 }
 912
 913 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 914 {
 915     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 916                                OSSL_KDF_PARAM_DIGEST,
 917                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 918 }
 919
 920 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 921                                           const char *param, int op, int ctrl,
 922                                           const unsigned char *data,
 923                                           int datalen)
 924 {
 925     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 926
 927     if (ctx == NULL || (ctx->operation & op) == 0) {
 928         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 929         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 930         return -2;
 931     }
 932
 933     /* TODO(3.0): Remove this eventually when no more legacy */
 934     if (fallback)
 935         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 936
 937     if (datalen < 0) {
 938         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 939         return 0;
 940     }
 941
 942     *p++ = OSSL_PARAM_construct_octet_string(param,
 943                                             /*
 944                                              * Cast away the const. This is read
 945                                              * only so should be safe
 946                                              */
 947                                             (unsigned char *)data,
 948                                             (size_t)datalen);
 949     *p = OSSL_PARAM_construct_end();
 950
 951     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 952 }
 953
 954 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 955                                       const unsigned char *sec, int seclen)
 956 {
 957     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 958                                           OSSL_KDF_PARAM_SECRET,
 959                                           EVP_PKEY_OP_DERIVE,
 960                                           EVP_PKEY_CTRL_TLS_SECRET,
 961                                           sec, seclen);
 962 }
 963
 964 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 965                                     const unsigned char *seed, int seedlen)
 966 {
 967     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 968                                           OSSL_KDF_PARAM_SEED,
 969                                           EVP_PKEY_OP_DERIVE,
 970                                           EVP_PKEY_CTRL_TLS_SEED,
 971                                           seed, seedlen);
 972 }
 973
 974 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 975 {
 976     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 977                                OSSL_KDF_PARAM_DIGEST,
 978                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 979 }
 980
 981 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 982                                 const unsigned char *salt, int saltlen)
 983 {
 984     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 985                                           OSSL_KDF_PARAM_SALT,
 986                                           EVP_PKEY_OP_DERIVE,
 987                                           EVP_PKEY_CTRL_HKDF_SALT,
 988                                           salt, saltlen);
 989 }
 990
 991 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 992                                       const unsigned char *key, int keylen)
 993 {
 994     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 995                                           OSSL_KDF_PARAM_KEY,
 996                                           EVP_PKEY_OP_DERIVE,
 997                                           EVP_PKEY_CTRL_HKDF_KEY,
 998                                           key, keylen);
 999 }
1000
1001 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1002                                       const unsigned char *info, int infolen)
1003 {
1004     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1005                                           OSSL_KDF_PARAM_INFO,
1006                                           EVP_PKEY_OP_DERIVE,
1007                                           EVP_PKEY_CTRL_HKDF_INFO,
1008                                           info, infolen);
1009 }
1010
1011 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1012 {
1013     OSSL_PARAM int_params[2], *p = int_params;
1014
1015     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1016         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1017         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1018         return -2;
1019     }
1020
1021     /* TODO(3.0): Remove this eventually when no more legacy */
1022     if (ctx->op.kex.exchprovctx == NULL)
1023         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1024                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1025
1026
1027     if (mode < 0) {
1028         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1029         return 0;
1030     }
1031
1032     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1033     *p = OSSL_PARAM_construct_end();
1034
1035     return EVP_PKEY_CTX_set_params(ctx, int_params);
1036 }
1037
1038 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1039                                int passlen)
1040 {
1041     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1042                                           OSSL_KDF_PARAM_PASSWORD,
1043                                           EVP_PKEY_OP_DERIVE,
1044                                           EVP_PKEY_CTRL_PASS,
1045                                           (const unsigned char *)pass, passlen);
1046 }
1047
1048 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1049                                   const unsigned char *salt, int saltlen)
1050 {
1051     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1052                                           OSSL_KDF_PARAM_SALT,
1053                                           EVP_PKEY_OP_DERIVE,
1054                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1055                                           salt, saltlen);
1056 }
1057
1058 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1059                                    int op, int ctrl, uint64_t val)
1060 {
1061     OSSL_PARAM uint64_params[2], *p = uint64_params;
1062
1063     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1064         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1065         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1066         return -2;
1067     }
1068
1069     /* TODO(3.0): Remove this eventually when no more legacy */
1070     if (ctx->op.kex.exchprovctx == NULL)
1071         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1072
1073     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1074     *p = OSSL_PARAM_construct_end();
1075
1076     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1077 }
1078
1079 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1080 {
1081     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1082                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1083                                    n);
1084 }
1085
1086 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1087 {
1088     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1089                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1090                                    r);
1091 }
1092
1093 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1094 {
1095     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1096                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1097                                    p);
1098 }
1099
1100 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1101                                          uint64_t maxmem_bytes)
1102 {
1103     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1104                                    EVP_PKEY_OP_DERIVE,
1105                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1106                                    maxmem_bytes);
1107 }
1108
1109 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1110                              int keylen)
1111 {
1112     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1113                                           OSSL_PKEY_PARAM_PRIV_KEY,
1114                                           EVP_PKEY_OP_KEYGEN,
1115                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1116                                           key, keylen);
1117 }
1118
1119 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1120 {
1121     OSSL_PARAM params[2], *p = params;
1122
1123     if (ctx == NULL || op == NULL) {
1124         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1125         return 0;
1126     }
1127     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1128         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1129         return -2;
1130     }
1131     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1132                                             (char *)op, 0);
1133     *p = OSSL_PARAM_construct_end();
1134     return EVP_PKEY_CTX_set_params(ctx, params);
1135 }
1136
1137 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1138 {
1139     OSSL_PARAM params[2], *p = params;
1140     int ret;
1141
1142     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1143         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1144         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1145         return -2;
1146     }
1147
1148     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1149                                              /*
1150                                               * Cast away the const. This is
1151                                               * read only so should be safe
1152                                               */
1153                                              (void *)id, (size_t)len);
1154     *p++ = OSSL_PARAM_construct_end();
1155
1156     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1157     if (ret == -2)
1158         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1159     return ret;
1160 }
1161
1162 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1163 {
1164     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1165                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1166 }
1167
1168 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1169 {
1170     int ret;
1171     void *tmp_id = NULL;
1172     OSSL_PARAM params[2], *p = params;
1173
1174     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1175         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1176         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1177         return -2;
1178     }
1179
1180     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1181                                           &tmp_id, 0);
1182     *p++ = OSSL_PARAM_construct_end();
1183
1184     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1185     if (ret == -2) {
1186         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1187     } else if (ret > 0) {
1188         size_t tmp_id_len = params[0].return_size;
1189
1190         if (id != NULL)
1191             memcpy(id, tmp_id, tmp_id_len);
1192         if (id_len != NULL)
1193             *id_len = tmp_id_len;
1194     }
1195     return ret;
1196 }
1197
1198 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1199 {
1200     return get1_id_data(ctx, id, NULL);
1201 }
1202
1203 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1204 {
1205     return get1_id_data(ctx, NULL, id_len);
1206 }
1207
1208 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1209 {
1210     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1211 }
1212
1213 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1214 {
1215     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1216                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1217 }
1218
1219 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1220                                 int cmd, int p1, void *p2)
1221 {
1222     switch (cmd) {
1223     case EVP_PKEY_CTRL_SET1_ID:
1224         return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1225     case EVP_PKEY_CTRL_GET1_ID:
1226         return evp_pkey_ctx_get1_id_prov(ctx, p2);
1227     case EVP_PKEY_CTRL_GET1_ID_LEN:
1228         return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1229     }
1230
1231 # ifndef OPENSSL_NO_DH
1232     if (keytype == EVP_PKEY_DHX) {
1233         switch (cmd) {
1234         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1235             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1236         case EVP_PKEY_CTRL_DH_KDF_MD:
1237             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1238         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1239             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1240         case EVP_PKEY_CTRL_DH_KDF_UKM:
1241             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1242         case EVP_PKEY_CTRL_DH_KDF_OID:
1243             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1244         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1245             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1246         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1247             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1248         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1249             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1250         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1251             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1252         }
1253     }
1254     if (keytype == EVP_PKEY_DH) {
1255         switch (cmd) {
1256             case EVP_PKEY_CTRL_DH_PAD:
1257                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1258             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1259                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1260             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1261                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1262             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1263                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1264             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1265                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1266             case EVP_PKEY_CTRL_DH_RFC5114:
1267                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1268         }
1269     }
1270 # endif
1271 # ifndef OPENSSL_NO_DSA
1272     if (keytype == EVP_PKEY_DSA) {
1273         switch (cmd) {
1274         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1275             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1276         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1277             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1278         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1279             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1280         }
1281     }
1282 # endif
1283 # ifndef OPENSSL_NO_EC
1284     if (keytype == EVP_PKEY_EC) {
1285         switch (cmd) {
1286         case EVP_PKEY_CTRL_EC_PARAM_ENC:
1287             return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1288         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1289             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1290         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1291             if (p1 == -2) {
1292                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1293             } else if (p1 < -1 || p1 > 1) {
1294                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1295                 return -2;
1296             } else {
1297                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1298             }
1299         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1300             if (p1 == -2) {
1301                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1302             } else {
1303                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1304             }
1305         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1306             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1307         case EVP_PKEY_CTRL_EC_KDF_MD:
1308             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1309         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1310             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1311         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1312             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1313         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1314             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1315         case EVP_PKEY_CTRL_EC_KDF_UKM:
1316             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1317         }
1318     }
1319 # endif
1320     if (keytype == EVP_PKEY_RSA) {
1321         switch (cmd) {
1322         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1323             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1324         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1325             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1326         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1327             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1328         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1329             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1330         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1331             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1332         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1333             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1334         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1335             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1336         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1337             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1338         }
1339     }
1340     /*
1341      * keytype == -1 is used when several key types share the same structure,
1342      * or for generic controls that are the same across multiple key types.
1343      */
1344     if (keytype == -1) {
1345         if (optype == EVP_PKEY_OP_DERIVE) {
1346             switch (cmd) {
1347             /* TLS1-PRF */
1348             case EVP_PKEY_CTRL_TLS_MD:
1349                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1350             case EVP_PKEY_CTRL_TLS_SECRET:
1351                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1352             case EVP_PKEY_CTRL_TLS_SEED:
1353                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1354
1355             /* HKDF */
1356             case EVP_PKEY_CTRL_HKDF_MD:
1357                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1358             case EVP_PKEY_CTRL_HKDF_SALT :
1359                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1360             case EVP_PKEY_CTRL_HKDF_KEY:
1361                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1362             case EVP_PKEY_CTRL_HKDF_INFO:
1363                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1364             case EVP_PKEY_CTRL_HKDF_MODE:
1365                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1366
1367             /* Scrypt */
1368             case EVP_PKEY_CTRL_PASS:
1369                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1370             case EVP_PKEY_CTRL_SCRYPT_SALT:
1371                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1372             case EVP_PKEY_CTRL_SCRYPT_N:
1373                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1374             case EVP_PKEY_CTRL_SCRYPT_R:
1375                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1376             case EVP_PKEY_CTRL_SCRYPT_P:
1377                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1378             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1379                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1380             }
1381         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1382             OSSL_PARAM params[2], *p = params;
1383
1384             switch (cmd) {
1385             case EVP_PKEY_CTRL_CIPHER:
1386                 {
1387                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1388
1389                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1390                                                             ciphname, 0);
1391                     *p = OSSL_PARAM_construct_end();
1392
1393                     return EVP_PKEY_CTX_set_params(ctx, params);
1394                 }
1395             case EVP_PKEY_CTRL_SET_MAC_KEY:
1396                 {
1397                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1398                                                              p2, p1);
1399                     *p = OSSL_PARAM_construct_end();
1400
1401                     return EVP_PKEY_CTX_set_params(ctx, params);
1402                 }
1403             }
1404         }
1405         switch (cmd) {
1406         case EVP_PKEY_CTRL_MD:
1407             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1408         case EVP_PKEY_CTRL_GET_MD:
1409             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1410         case EVP_PKEY_CTRL_RSA_PADDING:
1411             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1412         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1413             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1414         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1415             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1416         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1417             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1418         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1419             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1420         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1421         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1422 # ifndef OPENSSL_NO_CMS
1423         case EVP_PKEY_CTRL_CMS_DECRYPT:
1424         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1425 # endif
1426             /* TODO (3.0) Temporary hack, this should probe */
1427             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1428                 return 1;
1429             ERR_raise(ERR_LIB_EVP,
1430                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1431             return -2;
1432         }
1433     }
1434
1435     /*
1436      * GOST CMS format is different for different cipher algorithms.
1437      * Most of other algorithms don't have such a difference
1438      * so this ctrl is just ignored.
1439      */
1440     if (cmd == EVP_PKEY_CTRL_CIPHER)
1441         return -2;
1442
1443     return 0;
1444 }
1445
1446 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1447                                  int cmd, int p1, void *p2)
1448 {
1449     int ret = 0;
1450
1451     /*
1452      * If the method has a |digest_custom| function, we can relax the
1453      * operation type check, since this can be called before the operation
1454      * is initialized.
1455      */
1456     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1457         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1458             EVPerr(0, EVP_R_NO_OPERATION_SET);
1459             return -1;
1460         }
1461
1462         if ((optype != -1) && !(ctx->operation & optype)) {
1463             EVPerr(0, EVP_R_INVALID_OPERATION);
1464             return -1;
1465         }
1466     }
1467
1468     switch (evp_pkey_ctx_state(ctx)) {
1469     case EVP_PKEY_STATE_PROVIDER:
1470         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1471     case EVP_PKEY_STATE_UNKNOWN:
1472     case EVP_PKEY_STATE_LEGACY:
1473         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1474             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1475             return -2;
1476         }
1477         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1478             return -1;
1479
1480         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1481
1482         if (ret == -2)
1483             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1484         break;
1485     }
1486     return ret;
1487 }
1488
1489 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1490                       int cmd, int p1, void *p2)
1491 {
1492     int ret = 0;
1493
1494     if (ctx == NULL) {
1495         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1496         return -2;
1497     }
1498     /* If unsupported, we don't want that reported here */
1499     ERR_set_mark();
1500     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1501                                          cmd, NULL, p2, p1);
1502     if (ret == -2) {
1503         ERR_pop_to_mark();
1504     } else {
1505         ERR_clear_last_mark();
1506         /*
1507          * If there was an error, there was an error.
1508          * If the operation isn't initialized yet, we also return, as
1509          * the saved values will be used then anyway.
1510          */
1511         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1512             return ret;
1513     }
1514     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1515 }
1516
1517 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1518                              int cmd, uint64_t value)
1519 {
1520     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1521 }
1522
1523 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1524                                     const char *value)
1525 {
1526     if (strcmp(name, "md") == 0)
1527         name = OSSL_ALG_PARAM_DIGEST;
1528     else if (strcmp(name, "rsa_padding_mode") == 0)
1529         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1530     else if (strcmp(name, "rsa_mgf1_md") == 0)
1531         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1532     else if (strcmp(name, "rsa_oaep_md") == 0)
1533         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1534     else if (strcmp(name, "rsa_oaep_label") == 0)
1535         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1536     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1537         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1538     else if (strcmp(name, "rsa_keygen_bits") == 0)
1539         name = OSSL_PKEY_PARAM_RSA_BITS;
1540     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1541         name = OSSL_PKEY_PARAM_RSA_E;
1542     else if (strcmp(name, "rsa_keygen_primes") == 0)
1543         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1544     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1545         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1546     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1547         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1548     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1549         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1550 # ifndef OPENSSL_NO_DSA
1551     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1552         name = OSSL_PKEY_PARAM_FFC_PBITS;
1553     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1554         name = OSSL_PKEY_PARAM_FFC_QBITS;
1555     else if (strcmp(name, "dsa_paramgen_md") == 0)
1556         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1557 # endif
1558 # ifndef OPENSSL_NO_DH
1559     else if (strcmp(name, "dh_paramgen_generator") == 0)
1560         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1561     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1562         name = OSSL_PKEY_PARAM_FFC_PBITS;
1563     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1564         name = OSSL_PKEY_PARAM_FFC_QBITS;
1565     else if (strcmp(name, "dh_paramgen_type") == 0) {
1566         name = OSSL_PKEY_PARAM_FFC_TYPE;
1567         value = dh_gen_type_id2name(atoi(value));
1568     } else if (strcmp(name, "dh_param") == 0)
1569         name = OSSL_PKEY_PARAM_GROUP_NAME;
1570     else if (strcmp(name, "dh_rfc5114") == 0) {
1571         name = OSSL_PKEY_PARAM_GROUP_NAME;
1572         value = ffc_named_group_from_uid(atoi(value));
1573     } else if (strcmp(name, "dh_pad") == 0)
1574         name = OSSL_EXCHANGE_PARAM_PAD;
1575 # endif
1576 # ifndef OPENSSL_NO_EC
1577     else if (strcmp(name, "ec_paramgen_curve") == 0)
1578         name = OSSL_PKEY_PARAM_GROUP_NAME;
1579     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1580         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1581     else if (strcmp(name, "ecdh_kdf_md") == 0)
1582         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1583     else if (strcmp(name, "ec_param_enc") == 0)
1584         name = OSSL_PKEY_PARAM_EC_ENCODING;
1585 # endif
1586     else if (strcmp(name, "N") == 0)
1587         name = OSSL_KDF_PARAM_SCRYPT_N;
1588
1589     {
1590         /*
1591          * TODO(3.0) reduce the code above to only translate known legacy
1592          * string to the corresponding core name (see core_names.h), but
1593          * otherwise leave it to this code block to do the actual work.
1594          */
1595         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1596         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1597         int rv = 0;
1598         int exists = 0;
1599
1600         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1601                                            strlen(value), &exists)) {
1602             if (!exists) {
1603                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1604                                "name=%s,value=%s", name, value);
1605                 return -2;
1606             }
1607             return 0;
1608         }
1609         if (EVP_PKEY_CTX_set_params(ctx, params))
1610             rv = 1;
1611         OPENSSL_free(params[0].data);
1612         return rv;
1613     }
1614 }
1615
1616 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1617                                      const char *name, const char *value)
1618 {
1619     int ret = 0;
1620
1621     if (ctx == NULL) {
1622         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1623         return -2;
1624     }
1625
1626     switch (evp_pkey_ctx_state(ctx)) {
1627     case EVP_PKEY_STATE_PROVIDER:
1628         return legacy_ctrl_str_to_param(ctx, name, value);
1629     case EVP_PKEY_STATE_UNKNOWN:
1630     case EVP_PKEY_STATE_LEGACY:
1631         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1632             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1633             return -2;
1634         }
1635         if (strcmp(name, "digest") == 0)
1636             ret = EVP_PKEY_CTX_md(ctx,
1637                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1638                                   EVP_PKEY_CTRL_MD, value);
1639         else
1640             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1641         break;
1642     }
1643
1644     return ret;
1645 }
1646
1647 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1648                           const char *name, const char *value)
1649 {
1650     int ret = 0;
1651
1652     /* If unsupported, we don't want that reported here */
1653     ERR_set_mark();
1654     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1655                                          name, value, strlen(value) + 1);
1656     if (ret == -2) {
1657         ERR_pop_to_mark();
1658     } else {
1659         ERR_clear_last_mark();
1660         /*
1661          * If there was an error, there was an error.
1662          * If the operation isn't initialized yet, we also return, as
1663          * the saved values will be used then anyway.
1664          */
1665         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1666             return ret;
1667     }
1668
1669     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1670 }
1671
1672 static int decode_cmd(int cmd, const char *name)
1673 {
1674     if (cmd == -1) {
1675         /*
1676          * The consequence of the assertion not being true is that this
1677          * function will return -1, which will cause the calling functions
1678          * to signal that the command is unsupported...  in non-debug mode.
1679          */
1680         if (ossl_assert(name != NULL))
1681             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1682                 cmd = EVP_PKEY_CTRL_SET1_ID;
1683     }
1684
1685     return cmd;
1686 }
1687
1688 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1689                                           int keytype, int optype,
1690                                           int cmd, const char *name,
1691                                           const void *data, size_t data_len)
1692 {
1693     if ((keytype != -1 && ctx->pmeth->pkey_id != keytype)
1694         || ((optype != -1) && !(ctx->operation & optype))) {
1695         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1696         return -1;
1697     }
1698
1699     cmd = decode_cmd(cmd, name);
1700     switch (cmd) {
1701     case EVP_PKEY_CTRL_SET1_ID:
1702         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1703         if (name != NULL) {
1704             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1705             if (ctx->cached_parameters.dist_id_name == NULL) {
1706                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1707                 return 0;
1708             }
1709         }
1710         if (data_len > 0) {
1711             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1712             if (ctx->cached_parameters.dist_id == NULL) {
1713                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1714                 return 0;
1715             }
1716         }
1717         ctx->cached_parameters.dist_id_set = 1;
1718         ctx->cached_parameters.dist_id_len = data_len;
1719         return 1;
1720     }
1721
1722     ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1723     return -2;
1724 }
1725
1726 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1727                                           int cmd, const char *name)
1728 {
1729     cmd = decode_cmd(cmd, name);
1730     switch (cmd) {
1731     case EVP_PKEY_CTRL_SET1_ID:
1732         OPENSSL_free(ctx->cached_parameters.dist_id);
1733         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1734         ctx->cached_parameters.dist_id = NULL;
1735         ctx->cached_parameters.dist_id_name = NULL;
1736         break;
1737     }
1738 }
1739
1740 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1741 {
1742     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1743 }
1744
1745 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1746 {
1747     int ret = 1;
1748
1749     if (ret && ctx->cached_parameters.dist_id_set) {
1750         const char *name = ctx->cached_parameters.dist_id_name;
1751         const void *val = ctx->cached_parameters.dist_id;
1752         size_t len = ctx->cached_parameters.dist_id_len;
1753
1754         if (name != NULL)
1755             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1756         else
1757             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1758                                         EVP_PKEY_CTRL_SET1_ID,
1759                                         (int)len, (void *)val);
1760     }
1761
1762     return ret;
1763 }
1764
1765 /* Utility functions to send a string of hex string to a ctrl */
1766
1767 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1768 {
1769     size_t len;
1770
1771     len = strlen(str);
1772     if (len > INT_MAX)
1773         return -1;
1774     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1775 }
1776
1777 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1778 {
1779     unsigned char *bin;
1780     long binlen;
1781     int rv = -1;
1782
1783     bin = OPENSSL_hexstr2buf(hex, &binlen);
1784     if (bin == NULL)
1785         return 0;
1786     if (binlen <= INT_MAX)
1787         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1788     OPENSSL_free(bin);
1789     return rv;
1790 }
1791
1792 /* Pass a message digest to a ctrl */
1793 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1794 {
1795     const EVP_MD *m;
1796
1797     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1798         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1799         return 0;
1800     }
1801     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1802 }
1803
1804 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1805 {
1806     return ctx->operation;
1807 }
1808
1809 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1810 {
1811     ctx->keygen_info = dat;
1812     ctx->keygen_info_count = datlen;
1813 }
1814
1815 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1816 {
1817     ctx->data = data;
1818 }
1819
1820 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1821 {
1822     return ctx->data;
1823 }
1824
1825 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1826 {
1827     return ctx->pkey;
1828 }
1829
1830 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1831 {
1832     return ctx->peerkey;
1833 }
1834
1835 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1836 {
1837     ctx->app_data = data;
1838 }
1839
1840 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1841 {
1842     return ctx->app_data;
1843 }
1844
1845 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1846                             int (*init) (EVP_PKEY_CTX *ctx))
1847 {
1848     pmeth->init = init;
1849 }
1850
1851 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1852                             int (*copy) (EVP_PKEY_CTX *dst,
1853                                          const EVP_PKEY_CTX *src))
1854 {
1855     pmeth->copy = copy;
1856 }
1857
1858 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1859                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1860 {
1861     pmeth->cleanup = cleanup;
1862 }
1863
1864 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1865                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1866                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1867                                                  EVP_PKEY *pkey))
1868 {
1869     pmeth->paramgen_init = paramgen_init;
1870     pmeth->paramgen = paramgen;
1871 }
1872
1873 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1874                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1875                               int (*keygen) (EVP_PKEY_CTX *ctx,
1876                                              EVP_PKEY *pkey))
1877 {
1878     pmeth->keygen_init = keygen_init;
1879     pmeth->keygen = keygen;
1880 }
1881
1882 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1883                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1884                             int (*sign) (EVP_PKEY_CTX *ctx,
1885                                          unsigned char *sig, size_t *siglen,
1886                                          const unsigned char *tbs,
1887                                          size_t tbslen))
1888 {
1889     pmeth->sign_init = sign_init;
1890     pmeth->sign = sign;
1891 }
1892
1893 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1894                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1895                               int (*verify) (EVP_PKEY_CTX *ctx,
1896                                              const unsigned char *sig,
1897                                              size_t siglen,
1898                                              const unsigned char *tbs,
1899                                              size_t tbslen))
1900 {
1901     pmeth->verify_init = verify_init;
1902     pmeth->verify = verify;
1903 }
1904
1905 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1906                                       int (*verify_recover_init) (EVP_PKEY_CTX
1907                                                                   *ctx),
1908                                       int (*verify_recover) (EVP_PKEY_CTX
1909                                                              *ctx,
1910                                                              unsigned char
1911                                                              *sig,
1912                                                              size_t *siglen,
1913                                                              const unsigned
1914                                                              char *tbs,
1915                                                              size_t tbslen))
1916 {
1917     pmeth->verify_recover_init = verify_recover_init;
1918     pmeth->verify_recover = verify_recover;
1919 }
1920
1921 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1922                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1923                                                     EVP_MD_CTX *mctx),
1924                                int (*signctx) (EVP_PKEY_CTX *ctx,
1925                                                unsigned char *sig,
1926                                                size_t *siglen,
1927                                                EVP_MD_CTX *mctx))
1928 {
1929     pmeth->signctx_init = signctx_init;
1930     pmeth->signctx = signctx;
1931 }
1932
1933 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1934                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1935                                                         EVP_MD_CTX *mctx),
1936                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1937                                                    const unsigned char *sig,
1938                                                    int siglen,
1939                                                    EVP_MD_CTX *mctx))
1940 {
1941     pmeth->verifyctx_init = verifyctx_init;
1942     pmeth->verifyctx = verifyctx;
1943 }
1944
1945 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1946                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1947                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1948                                                  unsigned char *out,
1949                                                  size_t *outlen,
1950                                                  const unsigned char *in,
1951                                                  size_t inlen))
1952 {
1953     pmeth->encrypt_init = encrypt_init;
1954     pmeth->encrypt = encryptfn;
1955 }
1956
1957 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1958                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1959                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1960                                                unsigned char *out,
1961                                                size_t *outlen,
1962                                                const unsigned char *in,
1963                                                size_t inlen))
1964 {
1965     pmeth->decrypt_init = decrypt_init;
1966     pmeth->decrypt = decrypt;
1967 }
1968
1969 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1970                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1971                               int (*derive) (EVP_PKEY_CTX *ctx,
1972                                              unsigned char *key,
1973                                              size_t *keylen))
1974 {
1975     pmeth->derive_init = derive_init;
1976     pmeth->derive = derive;
1977 }
1978
1979 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1980                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1981                                          void *p2),
1982                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1983                                              const char *type,
1984                                              const char *value))
1985 {
1986     pmeth->ctrl = ctrl;
1987     pmeth->ctrl_str = ctrl_str;
1988 }
1989
1990 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1991     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1992                        const unsigned char *tbs, size_t tbslen))
1993 {
1994     pmeth->digestsign = digestsign;
1995 }
1996
1997 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1998     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1999                          size_t siglen, const unsigned char *tbs,
2000                          size_t tbslen))
2001 {
2002     pmeth->digestverify = digestverify;
2003 }
2004
2005 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
2006                              int (*check) (EVP_PKEY *pkey))
2007 {
2008     pmeth->check = check;
2009 }
2010
2011 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
2012                                     int (*check) (EVP_PKEY *pkey))
2013 {
2014     pmeth->public_check = check;
2015 }
2016
2017 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
2018                                    int (*check) (EVP_PKEY *pkey))
2019 {
2020     pmeth->param_check = check;
2021 }
2022
2023 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
2024                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
2025                                                            EVP_MD_CTX *mctx))
2026 {
2027     pmeth->digest_custom = digest_custom;
2028 }
2029
2030 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
2031                             int (**pinit) (EVP_PKEY_CTX *ctx))
2032 {
2033     *pinit = pmeth->init;
2034 }
2035
2036 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2037                             int (**pcopy) (EVP_PKEY_CTX *dst,
2038                                            const EVP_PKEY_CTX *src))
2039 {
2040     *pcopy = pmeth->copy;
2041 }
2042
2043 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2044                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
2045 {
2046     *pcleanup = pmeth->cleanup;
2047 }
2048
2049 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2050                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2051                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2052                                                    EVP_PKEY *pkey))
2053 {
2054     if (pparamgen_init)
2055         *pparamgen_init = pmeth->paramgen_init;
2056     if (pparamgen)
2057         *pparamgen = pmeth->paramgen;
2058 }
2059
2060 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2061                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2062                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
2063                                                EVP_PKEY *pkey))
2064 {
2065     if (pkeygen_init)
2066         *pkeygen_init = pmeth->keygen_init;
2067     if (pkeygen)
2068         *pkeygen = pmeth->keygen;
2069 }
2070
2071 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2072                             int (**psign_init) (EVP_PKEY_CTX *ctx),
2073                             int (**psign) (EVP_PKEY_CTX *ctx,
2074                                            unsigned char *sig, size_t *siglen,
2075                                            const unsigned char *tbs,
2076                                            size_t tbslen))
2077 {
2078     if (psign_init)
2079         *psign_init = pmeth->sign_init;
2080     if (psign)
2081         *psign = pmeth->sign;
2082 }
2083
2084 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2085                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
2086                               int (**pverify) (EVP_PKEY_CTX *ctx,
2087                                                const unsigned char *sig,
2088                                                size_t siglen,
2089                                                const unsigned char *tbs,
2090                                                size_t tbslen))
2091 {
2092     if (pverify_init)
2093         *pverify_init = pmeth->verify_init;
2094     if (pverify)
2095         *pverify = pmeth->verify;
2096 }
2097
2098 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2099                                       int (**pverify_recover_init) (EVP_PKEY_CTX
2100                                                                     *ctx),
2101                                       int (**pverify_recover) (EVP_PKEY_CTX
2102                                                                *ctx,
2103                                                                unsigned char
2104                                                                *sig,
2105                                                                size_t *siglen,
2106                                                                const unsigned
2107                                                                char *tbs,
2108                                                                size_t tbslen))
2109 {
2110     if (pverify_recover_init)
2111         *pverify_recover_init = pmeth->verify_recover_init;
2112     if (pverify_recover)
2113         *pverify_recover = pmeth->verify_recover;
2114 }
2115
2116 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2117                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2118                                                       EVP_MD_CTX *mctx),
2119                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2120                                                  unsigned char *sig,
2121                                                  size_t *siglen,
2122                                                  EVP_MD_CTX *mctx))
2123 {
2124     if (psignctx_init)
2125         *psignctx_init = pmeth->signctx_init;
2126     if (psignctx)
2127         *psignctx = pmeth->signctx;
2128 }
2129
2130 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2131                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2132                                                           EVP_MD_CTX *mctx),
2133                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2134                                                      const unsigned char *sig,
2135                                                      int siglen,
2136                                                      EVP_MD_CTX *mctx))
2137 {
2138     if (pverifyctx_init)
2139         *pverifyctx_init = pmeth->verifyctx_init;
2140     if (pverifyctx)
2141         *pverifyctx = pmeth->verifyctx;
2142 }
2143
2144 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2145                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2146                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2147                                                    unsigned char *out,
2148                                                    size_t *outlen,
2149                                                    const unsigned char *in,
2150                                                    size_t inlen))
2151 {
2152     if (pencrypt_init)
2153         *pencrypt_init = pmeth->encrypt_init;
2154     if (pencryptfn)
2155         *pencryptfn = pmeth->encrypt;
2156 }
2157
2158 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2159                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2160                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2161                                                  unsigned char *out,
2162                                                  size_t *outlen,
2163                                                  const unsigned char *in,
2164                                                  size_t inlen))
2165 {
2166     if (pdecrypt_init)
2167         *pdecrypt_init = pmeth->decrypt_init;
2168     if (pdecrypt)
2169         *pdecrypt = pmeth->decrypt;
2170 }
2171
2172 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2173                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2174                               int (**pderive) (EVP_PKEY_CTX *ctx,
2175                                                unsigned char *key,
2176                                                size_t *keylen))
2177 {
2178     if (pderive_init)
2179         *pderive_init = pmeth->derive_init;
2180     if (pderive)
2181         *pderive = pmeth->derive;
2182 }
2183
2184 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2185                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2186                                            void *p2),
2187                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2188                                                const char *type,
2189                                                const char *value))
2190 {
2191     if (pctrl)
2192         *pctrl = pmeth->ctrl;
2193     if (pctrl_str)
2194         *pctrl_str = pmeth->ctrl_str;
2195 }
2196
2197 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2198     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2199                         const unsigned char *tbs, size_t tbslen))
2200 {
2201     if (digestsign)
2202         *digestsign = pmeth->digestsign;
2203 }
2204
2205 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2206     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2207                           size_t siglen, const unsigned char *tbs,
2208                           size_t tbslen))
2209 {
2210     if (digestverify)
2211         *digestverify = pmeth->digestverify;
2212 }
2213
2214 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2215                              int (**pcheck) (EVP_PKEY *pkey))
2216 {
2217     if (pcheck != NULL)
2218         *pcheck = pmeth->check;
2219 }
2220
2221 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2222                                     int (**pcheck) (EVP_PKEY *pkey))
2223 {
2224     if (pcheck != NULL)
2225         *pcheck = pmeth->public_check;
2226 }
2227
2228 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2229                                    int (**pcheck) (EVP_PKEY *pkey))
2230 {
2231     if (pcheck != NULL)
2232         *pcheck = pmeth->param_check;
2233 }
2234
2235 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2236                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2237                                                              EVP_MD_CTX *mctx))
2238 {
2239     if (pdigest_custom != NULL)
2240         *pdigest_custom = pmeth->digest_custom;
2241 }
2242
2243 #endif /* FIPS_MODULE */