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