crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2024 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 #ifndef FIPS_MODULE
  19 # include <openssl/engine.h>
  20 #endif
  21 #include <openssl/evp.h>
  22 #include <openssl/core_names.h>
  23 #include <openssl/dh.h>
  24 #include <openssl/rsa.h>
  25 #include <openssl/kdf.h>
  26 #include "internal/cryptlib.h"
  27 #ifndef FIPS_MODULE
  28 # include "crypto/asn1.h"
  29 #endif
  30 #include "crypto/evp.h"
  31 #include "crypto/dh.h"
  32 #include "crypto/ec.h"
  33 #include "internal/ffc.h"
  34 #include "internal/numbers.h"
  35 #include "internal/provider.h"
  36 #include "evp_local.h"
  37
  38 #ifndef FIPS_MODULE
  39
  40 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
  41                                           int keytype, int optype,
  42                                           int cmd, const char *name,
  43                                           const void *data, size_t data_len);
  44 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
  45                                           int cmd, const char *name);
  46 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
  47
  48 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  49 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  50
  51 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  52
  53 /* This array needs to be in order of NIDs */
  54 static pmeth_fn standard_methods[] = {
  55     ossl_rsa_pkey_method,
  56 # ifndef OPENSSL_NO_DH
  57     ossl_dh_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_DSA
  60     ossl_dsa_pkey_method,
  61 # endif
  62 # ifndef OPENSSL_NO_EC
  63     ossl_ec_pkey_method,
  64 # endif
  65     ossl_rsa_pss_pkey_method,
  66 # ifndef OPENSSL_NO_DH
  67     ossl_dhx_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_ECX
  70     ossl_ecx25519_pkey_method,
  71     ossl_ecx448_pkey_method,
  72     ossl_ed25519_pkey_method,
  73     ossl_ed448_pkey_method,
  74 # endif
  75 };
  76
  77 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  78
  79 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  80 {
  81     return ((*a)->pkey_id - ((**b)())->pkey_id);
  82 }
  83
  84 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  85
  86 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  87                      const EVP_PKEY_METHOD *const *b)
  88 {
  89     return ((*a)->pkey_id - (*b)->pkey_id);
  90 }
  91
  92 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
  93 {
  94     if (app_pkey_methods != NULL) {
  95         int idx;
  96         EVP_PKEY_METHOD tmp;
  97
  98         tmp.pkey_id = type;
  99         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 100         if (idx >= 0)
 101             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 102     }
 103     return NULL;
 104 }
 105
 106 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 107 {
 108     pmeth_fn *ret;
 109     EVP_PKEY_METHOD tmp;
 110     const EVP_PKEY_METHOD *t;
 111
 112     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
 113         return t;
 114
 115     tmp.pkey_id = type;
 116     t = &tmp;
 117     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 118                                  OSSL_NELEM(standard_methods));
 119     if (ret == NULL || *ret == NULL)
 120         return NULL;
 121     return (**ret)();
 122 }
 123
 124 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 125 {
 126     EVP_PKEY_METHOD *pmeth;
 127
 128     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 129     if (pmeth == NULL)
 130         return NULL;
 131
 132     pmeth->pkey_id = id;
 133     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 134     return pmeth;
 135 }
 136 #endif /* FIPS_MODULE */
 137
 138 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
 139 {
 140     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 141         return EVP_PKEY_STATE_UNKNOWN;
 142
 143     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 144          && ctx->op.kex.algctx != NULL)
 145         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 146             && ctx->op.sig.algctx != NULL)
 147         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 148             && ctx->op.ciph.algctx != NULL)
 149         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 150             && ctx->op.keymgmt.genctx != NULL)
 151         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 152             && ctx->op.encap.algctx != NULL))
 153         return EVP_PKEY_STATE_PROVIDER;
 154
 155     return EVP_PKEY_STATE_LEGACY;
 156 }
 157
 158 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 159                                  EVP_PKEY *pkey, ENGINE *e,
 160                                  const char *keytype, const char *propquery,
 161                                  int id)
 162
 163 {
 164     EVP_PKEY_CTX *ret = NULL;
 165     const EVP_PKEY_METHOD *pmeth = NULL, *app_pmeth = NULL;
 166     EVP_KEYMGMT *keymgmt = NULL;
 167
 168     /* Code below to be removed when legacy support is dropped. */
 169     /* BEGIN legacy */
 170     if (id == -1) {
 171         if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
 172             id = pkey->type;
 173         } else {
 174             if (pkey != NULL) {
 175                 /* Must be provided if we get here */
 176                 keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
 177             }
 178 #ifndef FIPS_MODULE
 179             if (keytype != NULL) {
 180                 id = evp_pkey_name2type(keytype);
 181                 if (id == NID_undef)
 182                     id = -1;
 183             }
 184 #endif
 185         }
 186     }
 187     /* If no ID was found here, we can only resort to find a keymgmt */
 188     if (id == -1) {
 189 #ifndef FIPS_MODULE
 190         /* Using engine with a key without id will not work */
 191         if (e != NULL) {
 192             ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 193             return NULL;
 194         }
 195 #endif
 196         goto common;
 197     }
 198
 199 #ifndef FIPS_MODULE
 200     /*
 201      * Here, we extract what information we can for the purpose of
 202      * supporting usage with implementations from providers, to make
 203      * for a smooth transition from legacy stuff to provider based stuff.
 204      *
 205      * If an engine is given, this is entirely legacy, and we should not
 206      * pretend anything else, so we clear the name.
 207      */
 208     if (e != NULL)
 209         keytype = NULL;
 210     if (e == NULL && (pkey == NULL || pkey->foreign == 0))
 211         keytype = OBJ_nid2sn(id);
 212
 213 # ifndef OPENSSL_NO_ENGINE
 214     if (e == NULL && pkey != NULL)
 215         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 216     /* Try to find an ENGINE which implements this method */
 217     if (e != NULL) {
 218         if (!ENGINE_init(e)) {
 219             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 220             return NULL;
 221         }
 222     } else {
 223         e = ENGINE_get_pkey_meth_engine(id);
 224     }
 225
 226     /*
 227      * If an ENGINE handled this method look it up. Otherwise use internal
 228      * tables.
 229      */
 230     if (e != NULL)
 231         pmeth = ENGINE_get_pkey_meth(e, id);
 232     else
 233 # endif /* OPENSSL_NO_ENGINE */
 234     if (pkey != NULL && pkey->foreign)
 235         pmeth = EVP_PKEY_meth_find(id);
 236     else
 237         app_pmeth = pmeth = evp_pkey_meth_find_added_by_application(id);
 238
 239     /* END legacy */
 240 #endif /* FIPS_MODULE */
 241  common:
 242     /*
 243      * If there's no engine and no app supplied pmeth and there's a name, we try
 244      * fetching a provider implementation.
 245      */
 246     if (e == NULL && app_pmeth == NULL && keytype != NULL) {
 247         /*
 248          * If |pkey| is given and is provided, we take a reference to its
 249          * keymgmt.  Otherwise, we fetch one for the keytype we got. This
 250          * is to ensure that operation init functions can access what they
 251          * need through this single pointer.
 252          */
 253         if (pkey != NULL && pkey->keymgmt != NULL) {
 254             if (!EVP_KEYMGMT_up_ref(pkey->keymgmt))
 255                 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
 256             else
 257                 keymgmt = pkey->keymgmt;
 258         } else {
 259             keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 260         }
 261         if (keymgmt == NULL)
 262             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 263
 264 #ifndef FIPS_MODULE
 265         /*
 266          * Chase down the legacy NID, as that might be needed for diverse
 267          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 268          * values. We go through all keymgmt names, because the keytype
 269          * that's passed to this function doesn't necessarily translate
 270          * directly.
 271          */
 272         if (keymgmt != NULL) {
 273             int tmp_id = evp_keymgmt_get_legacy_alg(keymgmt);
 274
 275             if (tmp_id != NID_undef) {
 276                 if (id == -1) {
 277                     id = tmp_id;
 278                 } else {
 279                     /*
 280                      * It really really shouldn't differ.  If it still does,
 281                      * something is very wrong.
 282                      */
 283                     if (!ossl_assert(id == tmp_id)) {
 284                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 285                         EVP_KEYMGMT_free(keymgmt);
 286                         return NULL;
 287                     }
 288                 }
 289             }
 290         }
 291 #endif
 292     }
 293
 294     if (pmeth == NULL && keymgmt == NULL) {
 295         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 296     } else {
 297         ret = OPENSSL_zalloc(sizeof(*ret));
 298     }
 299
 300 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 301     if ((ret == NULL || pmeth == NULL) && e != NULL)
 302         ENGINE_finish(e);
 303 #endif
 304
 305     if (ret == NULL) {
 306         EVP_KEYMGMT_free(keymgmt);
 307         return NULL;
 308     }
 309     if (propquery != NULL) {
 310         ret->propquery = OPENSSL_strdup(propquery);
 311         if (ret->propquery == NULL) {
 312             OPENSSL_free(ret);
 313             EVP_KEYMGMT_free(keymgmt);
 314             return NULL;
 315         }
 316     }
 317     ret->libctx = libctx;
 318     ret->keytype = keytype;
 319     ret->keymgmt = keymgmt;
 320     ret->legacy_keytype = id;
 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(OSSL_LIB_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(OSSL_LIB_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.algctx != NULL && ctx->op.sig.signature != NULL)
 358             ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
 359         EVP_SIGNATURE_free(ctx->op.sig.signature);
 360         ctx->op.sig.algctx = NULL;
 361         ctx->op.sig.signature = NULL;
 362     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 363         if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
 364             ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
 365         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 366         ctx->op.kex.algctx = NULL;
 367         ctx->op.kex.exchange = NULL;
 368     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 369         if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
 370             ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
 371         EVP_KEM_free(ctx->op.encap.kem);
 372         ctx->op.encap.algctx = NULL;
 373         ctx->op.encap.kem = NULL;
 374     }
 375     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 376         if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
 377             ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
 378         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 379         ctx->op.ciph.algctx = 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     OPENSSL_free(ctx->propquery);
 401     EVP_PKEY_free(ctx->pkey);
 402     EVP_PKEY_free(ctx->peerkey);
 403 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 404     ENGINE_finish(ctx->engine);
 405 #endif
 406     BN_free(ctx->rsa_pubexp);
 407     OPENSSL_free(ctx);
 408 }
 409
 410 #ifndef FIPS_MODULE
 411
 412 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 413                              const EVP_PKEY_METHOD *meth)
 414 {
 415     if (ppkey_id)
 416         *ppkey_id = meth->pkey_id;
 417     if (pflags)
 418         *pflags = meth->flags;
 419 }
 420
 421 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 422 {
 423     int pkey_id = dst->pkey_id;
 424     int flags = dst->flags;
 425
 426     *dst = *src;
 427
 428     /* We only copy the function pointers so restore the other values */
 429     dst->pkey_id = pkey_id;
 430     dst->flags = flags;
 431 }
 432
 433 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 434 {
 435     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 436         OPENSSL_free(pmeth);
 437 }
 438
 439 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 440 {
 441     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 442 }
 443
 444 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 445 {
 446     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 447 }
 448
 449 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 450 {
 451     EVP_PKEY_CTX *rctx;
 452
 453 # ifndef OPENSSL_NO_ENGINE
 454     /* Make sure it's safe to copy a pkey context using an ENGINE */
 455     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 456         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 457         return 0;
 458     }
 459 # endif
 460     rctx = OPENSSL_zalloc(sizeof(*rctx));
 461     if (rctx == NULL)
 462         return NULL;
 463
 464     if (pctx->pkey != NULL)
 465         EVP_PKEY_up_ref(pctx->pkey);
 466     rctx->pkey = pctx->pkey;
 467     rctx->operation = pctx->operation;
 468     rctx->libctx = pctx->libctx;
 469     rctx->keytype = pctx->keytype;
 470     rctx->propquery = NULL;
 471     if (pctx->propquery != NULL) {
 472         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 473         if (rctx->propquery == NULL)
 474             goto err;
 475     }
 476     rctx->legacy_keytype = pctx->legacy_keytype;
 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                 goto err;
 483         }
 484         if (pctx->op.kex.algctx != NULL) {
 485             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 486                 goto err;
 487
 488             if (pctx->op.kex.exchange->dupctx != NULL)
 489                 rctx->op.kex.algctx
 490                     = pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
 491
 492             if (rctx->op.kex.algctx == NULL) {
 493                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 494                 rctx->op.kex.exchange = NULL;
 495                 goto err;
 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                 goto err;
 504         }
 505         if (pctx->op.sig.algctx != NULL) {
 506             if (!ossl_assert(pctx->op.sig.signature != NULL))
 507                 goto err;
 508
 509             if (pctx->op.sig.signature->dupctx != NULL)
 510                 rctx->op.sig.algctx
 511                     = pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
 512
 513             if (rctx->op.sig.algctx == NULL) {
 514                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 515                 rctx->op.sig.signature = NULL;
 516                 goto err;
 517             }
 518             return rctx;
 519         }
 520     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 521         if (pctx->op.ciph.cipher != NULL) {
 522             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 523             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 524                 goto err;
 525         }
 526         if (pctx->op.ciph.algctx != NULL) {
 527             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 528                 goto err;
 529
 530             if (pctx->op.ciph.cipher->dupctx != NULL)
 531                 rctx->op.ciph.algctx
 532                     = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
 533
 534             if (rctx->op.ciph.algctx == NULL) {
 535                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 536                 rctx->op.ciph.cipher = NULL;
 537                 goto err;
 538             }
 539             return rctx;
 540         }
 541     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 542         if (pctx->op.encap.kem != NULL) {
 543             rctx->op.encap.kem = pctx->op.encap.kem;
 544             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 545                 goto err;
 546         }
 547         if (pctx->op.encap.algctx != NULL) {
 548             if (!ossl_assert(pctx->op.encap.kem != NULL))
 549                 goto err;
 550
 551             if (pctx->op.encap.kem->dupctx != NULL)
 552                 rctx->op.encap.algctx
 553                     = pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
 554
 555             if (rctx->op.encap.algctx == NULL) {
 556                 EVP_KEM_free(rctx->op.encap.kem);
 557                 rctx->op.encap.kem = NULL;
 558                 goto err;
 559             }
 560             return rctx;
 561         }
 562     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 563         /* Not supported - This would need a gen_dupctx() to work */
 564         goto err;
 565     }
 566
 567     rctx->pmeth = pctx->pmeth;
 568 # ifndef OPENSSL_NO_ENGINE
 569     rctx->engine = pctx->engine;
 570 # endif
 571
 572     if (pctx->peerkey != NULL)
 573         EVP_PKEY_up_ref(pctx->peerkey);
 574     rctx->peerkey = pctx->peerkey;
 575
 576     if (pctx->pmeth == NULL) {
 577         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 578             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 579             void *provkey;
 580
 581             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 582                                                   &tmp_keymgmt, pctx->propquery);
 583             if (provkey == NULL)
 584                 goto err;
 585             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 586                 goto err;
 587             EVP_KEYMGMT_free(rctx->keymgmt);
 588             rctx->keymgmt = tmp_keymgmt;
 589             return rctx;
 590         }
 591     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 592         return rctx;
 593     }
 594 err:
 595     rctx->pmeth = NULL;
 596     EVP_PKEY_CTX_free(rctx);
 597     return NULL;
 598 }
 599
 600 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 601 {
 602     if (app_pkey_methods == NULL) {
 603         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 604         if (app_pkey_methods == NULL) {
 605             ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
 606             return 0;
 607         }
 608     }
 609     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 610         ERR_raise(ERR_LIB_EVP, ERR_R_CRYPTO_LIB);
 611         return 0;
 612     }
 613     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 614     return 1;
 615 }
 616
 617 void evp_app_cleanup_int(void)
 618 {
 619     if (app_pkey_methods != NULL)
 620         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 621 }
 622
 623 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 624 {
 625     const EVP_PKEY_METHOD *ret;
 626
 627     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 628
 629     return ret == NULL ? 0 : 1;
 630 }
 631
 632 size_t EVP_PKEY_meth_get_count(void)
 633 {
 634     size_t rv = OSSL_NELEM(standard_methods);
 635
 636     if (app_pkey_methods)
 637         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 638     return rv;
 639 }
 640
 641 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 642 {
 643     if (idx < OSSL_NELEM(standard_methods))
 644         return (standard_methods[idx])();
 645     if (app_pkey_methods == NULL)
 646         return NULL;
 647     idx -= OSSL_NELEM(standard_methods);
 648     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 649         return NULL;
 650     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 651 }
 652 #endif
 653
 654 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
 655 {
 656 #ifndef FIPS_MODULE
 657     if (evp_pkey_ctx_is_legacy(ctx))
 658         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
 659 #endif
 660     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
 661 }
 662
 663 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
 664 {
 665     switch (evp_pkey_ctx_state(ctx)) {
 666     case EVP_PKEY_STATE_PROVIDER:
 667         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 668             && ctx->op.kex.exchange != NULL
 669             && ctx->op.kex.exchange->set_ctx_params != NULL)
 670             return
 671                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
 672                                                      params);
 673         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 674             && ctx->op.sig.signature != NULL
 675             && ctx->op.sig.signature->set_ctx_params != NULL)
 676             return
 677                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
 678                                                       params);
 679         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 680             && ctx->op.ciph.cipher != NULL
 681             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 682             return
 683                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
 684                                                     params);
 685         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 686             && ctx->keymgmt != NULL
 687             && ctx->keymgmt->gen_set_params != NULL)
 688             return
 689                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 690                                            params);
 691         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 692             && ctx->op.encap.kem != NULL
 693             && ctx->op.encap.kem->set_ctx_params != NULL)
 694             return
 695                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
 696                                                   params);
 697         break;
 698 #ifndef FIPS_MODULE
 699     case EVP_PKEY_STATE_UNKNOWN:
 700     case EVP_PKEY_STATE_LEGACY:
 701         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
 702 #endif
 703     }
 704     return 0;
 705 }
 706
 707 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 708 {
 709     switch (evp_pkey_ctx_state(ctx)) {
 710     case EVP_PKEY_STATE_PROVIDER:
 711         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 712             && ctx->op.kex.exchange != NULL
 713             && ctx->op.kex.exchange->get_ctx_params != NULL)
 714             return
 715                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
 716                                                      params);
 717         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 718             && ctx->op.sig.signature != NULL
 719             && ctx->op.sig.signature->get_ctx_params != NULL)
 720             return
 721                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
 722                                                       params);
 723         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 724             && ctx->op.ciph.cipher != NULL
 725             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 726             return
 727                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
 728                                                     params);
 729         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 730             && ctx->op.encap.kem != NULL
 731             && ctx->op.encap.kem->get_ctx_params != NULL)
 732             return
 733                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
 734                                                   params);
 735         break;
 736 #ifndef FIPS_MODULE
 737     case EVP_PKEY_STATE_UNKNOWN:
 738     case EVP_PKEY_STATE_LEGACY:
 739         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
 740 #endif
 741     }
 742     return 0;
 743 }
 744
 745 #ifndef FIPS_MODULE
 746 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
 747 {
 748     void *provctx;
 749
 750     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 751             && ctx->op.kex.exchange != NULL
 752             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 753         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 754         return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
 755                                                          provctx);
 756     }
 757     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 758             && ctx->op.sig.signature != NULL
 759             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 760         provctx = ossl_provider_ctx(
 761                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 762         return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
 763                                                           provctx);
 764     }
 765     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 766             && ctx->op.ciph.cipher != NULL
 767             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 768         provctx = ossl_provider_ctx(
 769                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 770         return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
 771                                                         provctx);
 772     }
 773     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 774         && ctx->op.encap.kem != NULL
 775         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 776         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 777         return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
 778                                                       provctx);
 779     }
 780     return NULL;
 781 }
 782
 783 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
 784 {
 785     void *provctx;
 786
 787     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 788             && ctx->op.kex.exchange != NULL
 789             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 790         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 791         return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
 792                                                          provctx);
 793     }
 794     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 795             && ctx->op.sig.signature != NULL
 796             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 797         provctx = ossl_provider_ctx(
 798                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 799         return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
 800                                                           provctx);
 801     }
 802     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 803             && ctx->op.ciph.cipher != NULL
 804             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 805         provctx = ossl_provider_ctx(
 806                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 807         return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
 808                                                         provctx);
 809     }
 810     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 811             && ctx->keymgmt != NULL
 812             && ctx->keymgmt->gen_settable_params != NULL) {
 813         provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
 814         return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
 815                                                  provctx);
 816     }
 817     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 818         && ctx->op.encap.kem != NULL
 819         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 820         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 821         return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
 822                                                       provctx);
 823     }
 824     return NULL;
 825 }
 826
 827 /*
 828  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 829  *
 830  * Return 1 on success, 0 or negative for errors.
 831  *
 832  * In particular they return -2 if any of the params is not supported.
 833  *
 834  * They are not available in FIPS_MODULE as they depend on
 835  *      - EVP_PKEY_CTX_{get,set}_params()
 836  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 837  *
 838  */
 839 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 840 {
 841     if (ctx == NULL || params == NULL)
 842         return 0;
 843
 844     /*
 845      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 846      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
 847      * call, and that the resulting ctrl call will return -2 if it doesn't
 848      * known the ctrl command number.
 849      */
 850     if (evp_pkey_ctx_is_provided(ctx)) {
 851         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 852         const OSSL_PARAM *p;
 853
 854         for (p = params; p->key != NULL; p++) {
 855             /* Check the ctx actually understands this parameter */
 856             if (OSSL_PARAM_locate_const(settable, p->key) == NULL)
 857                 return -2;
 858         }
 859     }
 860
 861     return EVP_PKEY_CTX_set_params(ctx, params);
 862 }
 863
 864 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 865 {
 866     if (ctx == NULL || params == NULL)
 867         return 0;
 868
 869     /*
 870      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 871      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
 872      * call, and that the resulting ctrl call will return -2 if it doesn't
 873      * known the ctrl command number.
 874      */
 875     if (evp_pkey_ctx_is_provided(ctx)) {
 876         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
 877         const OSSL_PARAM *p;
 878
 879         for (p = params; p->key != NULL; p++) {
 880             /* Check the ctx actually understands this parameter */
 881             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL)
 882                 return -2;
 883         }
 884     }
 885
 886     return EVP_PKEY_CTX_get_params(ctx, params);
 887 }
 888
 889 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 890 {
 891     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 892     /* 80 should be big enough */
 893     char name[80] = "";
 894     const EVP_MD *tmp;
 895
 896     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 897         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 898         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 899         return -2;
 900     }
 901
 902     if (ctx->op.sig.algctx == NULL)
 903         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 904                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 905
 906     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 907                                             name,
 908                                             sizeof(name));
 909     *p = OSSL_PARAM_construct_end();
 910
 911     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 912         return 0;
 913
 914     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 915     if (tmp == NULL)
 916         return 0;
 917
 918     *md = tmp;
 919
 920     return 1;
 921 }
 922
 923 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 924                                int fallback, const char *param, int op,
 925                                int ctrl)
 926 {
 927     OSSL_PARAM md_params[2], *p = md_params;
 928     const char *name;
 929
 930     if (ctx == NULL || (ctx->operation & op) == 0) {
 931         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 932         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 933         return -2;
 934     }
 935
 936     if (fallback)
 937         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 938
 939     if (md == NULL) {
 940         name = "";
 941     } else {
 942         name = EVP_MD_get0_name(md);
 943     }
 944
 945     *p++ = OSSL_PARAM_construct_utf8_string(param,
 946                                             /*
 947                                              * Cast away the const. This is read
 948                                              * only so should be safe
 949                                              */
 950                                             (char *)name, 0);
 951     *p = OSSL_PARAM_construct_end();
 952
 953     return EVP_PKEY_CTX_set_params(ctx, md_params);
 954 }
 955
 956 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 957 {
 958     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
 959                                OSSL_SIGNATURE_PARAM_DIGEST,
 960                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 961 }
 962
 963 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 964 {
 965     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
 966                                OSSL_KDF_PARAM_DIGEST,
 967                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 968 }
 969
 970 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 971                                           const char *param, int op, int ctrl,
 972                                           const unsigned char *data,
 973                                           int datalen)
 974 {
 975     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 976
 977     if (ctx == NULL || (ctx->operation & op) == 0) {
 978         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 979         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 980         return -2;
 981     }
 982
 983     /* Code below to be removed when legacy support is dropped. */
 984     if (fallback)
 985         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 986     /* end of legacy support */
 987
 988     if (datalen < 0) {
 989         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 990         return 0;
 991     }
 992
 993     *p++ = OSSL_PARAM_construct_octet_string(param,
 994                                             /*
 995                                              * Cast away the const. This is read
 996                                              * only so should be safe
 997                                              */
 998                                             (unsigned char *)data,
 999                                             (size_t)datalen);
1000     *p = OSSL_PARAM_construct_end();
1001
1002     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
1003 }
1004
1005 static int evp_pkey_ctx_add1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
1006                                           const char *param, int op, int ctrl,
1007                                           const unsigned char *data,
1008                                           int datalen)
1009 {
1010     OSSL_PARAM os_params[2];
1011     unsigned char *info = NULL;
1012     size_t info_len = 0;
1013     size_t info_alloc = 0;
1014     int ret = 0;
1015
1016     if (ctx == NULL || (ctx->operation & op) == 0) {
1017         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1018         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1019         return -2;
1020     }
1021
1022     /* Code below to be removed when legacy support is dropped. */
1023     if (fallback)
1024         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
1025     /* end of legacy support */
1026
1027     if (datalen < 0) {
1028         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
1029         return 0;
1030     } else if (datalen == 0) {
1031         return 1;
1032     }
1033
1034     /* Get the original value length */
1035     os_params[0] = OSSL_PARAM_construct_octet_string(param, NULL, 0);
1036     os_params[1] = OSSL_PARAM_construct_end();
1037
1038     if (!EVP_PKEY_CTX_get_params(ctx, os_params))
1039         return 0;
1040
1041     /* Older provider that doesn't support getting this parameter */
1042     if (os_params[0].return_size == OSSL_PARAM_UNMODIFIED)
1043         return evp_pkey_ctx_set1_octet_string(ctx, fallback, param, op, ctrl, data, datalen);
1044
1045     info_alloc = os_params[0].return_size + datalen;
1046     if (info_alloc == 0)
1047         return 0;
1048     info = OPENSSL_zalloc(info_alloc);
1049     if (info == NULL)
1050         return 0;
1051     info_len = os_params[0].return_size;
1052
1053     os_params[0] = OSSL_PARAM_construct_octet_string(param, info, info_alloc);
1054
1055     /* if we have data, then go get it */
1056     if (info_len > 0) {
1057         if (!EVP_PKEY_CTX_get_params(ctx, os_params))
1058             goto error;
1059     }
1060
1061     /* Copy the input data */
1062     memcpy(&info[info_len], data, datalen);
1063     ret = EVP_PKEY_CTX_set_params(ctx, os_params);
1064
1065  error:
1066     OPENSSL_clear_free(info, info_alloc);
1067     return ret;
1068 }
1069
1070 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1071                                       const unsigned char *sec, int seclen)
1072 {
1073     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1074                                           OSSL_KDF_PARAM_SECRET,
1075                                           EVP_PKEY_OP_DERIVE,
1076                                           EVP_PKEY_CTRL_TLS_SECRET,
1077                                           sec, seclen);
1078 }
1079
1080 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1081                                     const unsigned char *seed, int seedlen)
1082 {
1083     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1084                                           OSSL_KDF_PARAM_SEED,
1085                                           EVP_PKEY_OP_DERIVE,
1086                                           EVP_PKEY_CTRL_TLS_SEED,
1087                                           seed, seedlen);
1088 }
1089
1090 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1091 {
1092     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
1093                                OSSL_KDF_PARAM_DIGEST,
1094                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1095 }
1096
1097 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1098                                 const unsigned char *salt, int saltlen)
1099 {
1100     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1101                                           OSSL_KDF_PARAM_SALT,
1102                                           EVP_PKEY_OP_DERIVE,
1103                                           EVP_PKEY_CTRL_HKDF_SALT,
1104                                           salt, saltlen);
1105 }
1106
1107 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1108                                       const unsigned char *key, int keylen)
1109 {
1110     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1111                                           OSSL_KDF_PARAM_KEY,
1112                                           EVP_PKEY_OP_DERIVE,
1113                                           EVP_PKEY_CTRL_HKDF_KEY,
1114                                           key, keylen);
1115 }
1116
1117 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1118                                       const unsigned char *info, int infolen)
1119 {
1120     return evp_pkey_ctx_add1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1121                                           OSSL_KDF_PARAM_INFO,
1122                                           EVP_PKEY_OP_DERIVE,
1123                                           EVP_PKEY_CTRL_HKDF_INFO,
1124                                           info, infolen);
1125 }
1126
1127 int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1128 {
1129     OSSL_PARAM int_params[2], *p = int_params;
1130
1131     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1132         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1133         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1134         return -2;
1135     }
1136
1137     /* Code below to be removed when legacy support is dropped. */
1138     if (ctx->op.kex.algctx == NULL)
1139         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1140                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1141     /* end of legacy support */
1142
1143     if (mode < 0) {
1144         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1145         return 0;
1146     }
1147
1148     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1149     *p = OSSL_PARAM_construct_end();
1150
1151     return EVP_PKEY_CTX_set_params(ctx, int_params);
1152 }
1153
1154 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1155                                int passlen)
1156 {
1157     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1158                                           OSSL_KDF_PARAM_PASSWORD,
1159                                           EVP_PKEY_OP_DERIVE,
1160                                           EVP_PKEY_CTRL_PASS,
1161                                           (const unsigned char *)pass, passlen);
1162 }
1163
1164 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1165                                   const unsigned char *salt, int saltlen)
1166 {
1167     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1168                                           OSSL_KDF_PARAM_SALT,
1169                                           EVP_PKEY_OP_DERIVE,
1170                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1171                                           salt, saltlen);
1172 }
1173
1174 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1175                                    int op, int ctrl, uint64_t val)
1176 {
1177     OSSL_PARAM uint64_params[2], *p = uint64_params;
1178
1179     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1180         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1181         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1182         return -2;
1183     }
1184
1185     /* Code below to be removed when legacy support is dropped. */
1186     if (ctx->op.kex.algctx == NULL)
1187         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1188     /* end of legacy support */
1189
1190     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1191     *p = OSSL_PARAM_construct_end();
1192
1193     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1194 }
1195
1196 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1197 {
1198     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1199                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1200                                    n);
1201 }
1202
1203 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1204 {
1205     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1206                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1207                                    r);
1208 }
1209
1210 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1211 {
1212     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1213                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1214                                    p);
1215 }
1216
1217 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1218                                          uint64_t maxmem_bytes)
1219 {
1220     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1221                                    EVP_PKEY_OP_DERIVE,
1222                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1223                                    maxmem_bytes);
1224 }
1225
1226 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1227                              int keylen)
1228 {
1229     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1230                                           OSSL_PKEY_PARAM_PRIV_KEY,
1231                                           EVP_PKEY_OP_KEYGEN,
1232                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1233                                           key, keylen);
1234 }
1235
1236 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1237 {
1238     OSSL_PARAM params[2], *p = params;
1239
1240     if (ctx == NULL || op == NULL) {
1241         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1242         return 0;
1243     }
1244     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1245         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1246         return -2;
1247     }
1248     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1249                                             (char *)op, 0);
1250     *p = OSSL_PARAM_construct_end();
1251     return EVP_PKEY_CTX_set_params(ctx, params);
1252 }
1253
1254 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1255 {
1256     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1257                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1258 }
1259
1260 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1261 {
1262     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1263 }
1264
1265 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1266 {
1267     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1268                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1269 }
1270
1271 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1272                                  int cmd, int p1, void *p2)
1273 {
1274     int ret = 0;
1275
1276     /*
1277      * If the method has a |digest_custom| function, we can relax the
1278      * operation type check, since this can be called before the operation
1279      * is initialized.
1280      */
1281     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1282         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1283             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1284             return -1;
1285         }
1286
1287         if ((optype != -1) && !(ctx->operation & optype)) {
1288             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1289             return -1;
1290         }
1291     }
1292
1293     switch (evp_pkey_ctx_state(ctx)) {
1294     case EVP_PKEY_STATE_PROVIDER:
1295         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1296     case EVP_PKEY_STATE_UNKNOWN:
1297     case EVP_PKEY_STATE_LEGACY:
1298         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1299             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1300             return -2;
1301         }
1302         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1303             return -1;
1304
1305         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1306
1307         if (ret == -2)
1308             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1309         break;
1310     }
1311     return ret;
1312 }
1313
1314 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1315                       int cmd, int p1, void *p2)
1316 {
1317     int ret = 0;
1318
1319     if (ctx == NULL) {
1320         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1321         return -2;
1322     }
1323     /* If unsupported, we don't want that reported here */
1324     ERR_set_mark();
1325     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1326                                          cmd, NULL, p2, p1);
1327     if (ret == -2) {
1328         ERR_pop_to_mark();
1329     } else {
1330         ERR_clear_last_mark();
1331         /*
1332          * If there was an error, there was an error.
1333          * If the operation isn't initialized yet, we also return, as
1334          * the saved values will be used then anyway.
1335          */
1336         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1337             return ret;
1338     }
1339     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1340 }
1341
1342 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1343                              int cmd, uint64_t value)
1344 {
1345     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1346 }
1347
1348
1349 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1350                                      const char *name, const char *value)
1351 {
1352     int ret = 0;
1353
1354     if (ctx == NULL) {
1355         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1356         return -2;
1357     }
1358
1359     switch (evp_pkey_ctx_state(ctx)) {
1360     case EVP_PKEY_STATE_PROVIDER:
1361         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1362     case EVP_PKEY_STATE_UNKNOWN:
1363     case EVP_PKEY_STATE_LEGACY:
1364         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1365             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1366             return -2;
1367         }
1368         if (strcmp(name, "digest") == 0)
1369             ret = EVP_PKEY_CTX_md(ctx,
1370                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1371                                   EVP_PKEY_CTRL_MD, value);
1372         else
1373             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1374         break;
1375     }
1376
1377     return ret;
1378 }
1379
1380 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1381                           const char *name, const char *value)
1382 {
1383     int ret = 0;
1384
1385     /* If unsupported, we don't want that reported here */
1386     ERR_set_mark();
1387     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1388                                          name, value, strlen(value) + 1);
1389     if (ret == -2) {
1390         ERR_pop_to_mark();
1391     } else {
1392         ERR_clear_last_mark();
1393         /*
1394          * If there was an error, there was an error.
1395          * If the operation isn't initialized yet, we also return, as
1396          * the saved values will be used then anyway.
1397          */
1398         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1399             return ret;
1400     }
1401
1402     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1403 }
1404
1405 static int decode_cmd(int cmd, const char *name)
1406 {
1407     if (cmd == -1) {
1408         /*
1409          * The consequence of the assertion not being true is that this
1410          * function will return -1, which will cause the calling functions
1411          * to signal that the command is unsupported...  in non-debug mode.
1412          */
1413         if (ossl_assert(name != NULL))
1414             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1415                 cmd = EVP_PKEY_CTRL_SET1_ID;
1416     }
1417
1418     return cmd;
1419 }
1420
1421 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1422                                           int keytype, int optype,
1423                                           int cmd, const char *name,
1424                                           const void *data, size_t data_len)
1425 {
1426     /*
1427      * Check that it's one of the supported commands.  The ctrl commands
1428      * number cases here must correspond to the cases in the bottom switch
1429      * in this function.
1430      */
1431     switch (cmd = decode_cmd(cmd, name)) {
1432     case EVP_PKEY_CTRL_SET1_ID:
1433         break;
1434     default:
1435         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1436         return -2;
1437     }
1438
1439     if (keytype != -1) {
1440         switch (evp_pkey_ctx_state(ctx)) {
1441         case EVP_PKEY_STATE_PROVIDER:
1442             if (ctx->keymgmt == NULL) {
1443                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1444                 return -2;
1445             }
1446             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1447                                   evp_pkey_type2name(keytype))) {
1448                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1449                 return -1;
1450             }
1451             break;
1452         case EVP_PKEY_STATE_UNKNOWN:
1453         case EVP_PKEY_STATE_LEGACY:
1454             if (ctx->pmeth == NULL) {
1455                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1456                 return -2;
1457             }
1458             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1459                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1460                 return -1;
1461             }
1462             break;
1463         }
1464     }
1465     if (optype != -1 && (ctx->operation & optype) == 0) {
1466         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1467         return -1;
1468     }
1469
1470     switch (cmd) {
1471     case EVP_PKEY_CTRL_SET1_ID:
1472         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1473         if (name != NULL) {
1474             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1475             if (ctx->cached_parameters.dist_id_name == NULL)
1476                 return 0;
1477         }
1478         if (data_len > 0) {
1479             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1480             if (ctx->cached_parameters.dist_id == NULL)
1481                 return 0;
1482         }
1483         ctx->cached_parameters.dist_id_set = 1;
1484         ctx->cached_parameters.dist_id_len = data_len;
1485         break;
1486     }
1487     return 1;
1488 }
1489
1490 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1491                                           int cmd, const char *name)
1492 {
1493     cmd = decode_cmd(cmd, name);
1494     switch (cmd) {
1495     case EVP_PKEY_CTRL_SET1_ID:
1496         OPENSSL_free(ctx->cached_parameters.dist_id);
1497         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1498         ctx->cached_parameters.dist_id = NULL;
1499         ctx->cached_parameters.dist_id_name = NULL;
1500         break;
1501     }
1502 }
1503
1504 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1505 {
1506     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1507 }
1508
1509 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1510 {
1511     int ret = 1;
1512
1513     if (ret && ctx->cached_parameters.dist_id_set) {
1514         const char *name = ctx->cached_parameters.dist_id_name;
1515         const void *val = ctx->cached_parameters.dist_id;
1516         size_t len = ctx->cached_parameters.dist_id_len;
1517
1518         if (name != NULL)
1519             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1520         else
1521             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1522                                         EVP_PKEY_CTRL_SET1_ID,
1523                                         (int)len, (void *)val);
1524     }
1525
1526     return ret;
1527 }
1528
1529 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1530 {
1531     return ctx->libctx;
1532 }
1533
1534 const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx)
1535 {
1536     return ctx->propquery;
1537 }
1538
1539 const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx)
1540 {
1541     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1542         if (ctx->op.sig.signature != NULL)
1543             return EVP_SIGNATURE_get0_provider(ctx->op.sig.signature);
1544     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1545         if (ctx->op.kex.exchange != NULL)
1546             return EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange);
1547     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1548         if (ctx->op.encap.kem != NULL)
1549             return EVP_KEM_get0_provider(ctx->op.encap.kem);
1550     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
1551         if (ctx->op.ciph.cipher != NULL)
1552             return EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher);
1553     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1554         if (ctx->keymgmt != NULL)
1555             return EVP_KEYMGMT_get0_provider(ctx->keymgmt);
1556     }
1557
1558     return NULL;
1559 }
1560
1561 /* Utility functions to send a string of hex string to a ctrl */
1562
1563 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1564 {
1565     size_t len;
1566
1567     len = strlen(str);
1568     if (len > INT_MAX)
1569         return -1;
1570     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1571 }
1572
1573 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1574 {
1575     unsigned char *bin;
1576     long binlen;
1577     int rv = -1;
1578
1579     bin = OPENSSL_hexstr2buf(hex, &binlen);
1580     if (bin == NULL)
1581         return 0;
1582     if (binlen <= INT_MAX)
1583         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1584     OPENSSL_free(bin);
1585     return rv;
1586 }
1587
1588 /* Pass a message digest to a ctrl */
1589 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1590 {
1591     const EVP_MD *m;
1592
1593     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1594         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1595         return 0;
1596     }
1597     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1598 }
1599
1600 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1601 {
1602     return ctx->operation;
1603 }
1604
1605 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1606 {
1607     ctx->keygen_info = dat;
1608     ctx->keygen_info_count = datlen;
1609 }
1610
1611 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1612 {
1613     ctx->data = data;
1614 }
1615
1616 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1617 {
1618     return ctx->data;
1619 }
1620
1621 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1622 {
1623     return ctx->pkey;
1624 }
1625
1626 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1627 {
1628     return ctx->peerkey;
1629 }
1630
1631 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1632 {
1633     ctx->app_data = data;
1634 }
1635
1636 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1637 {
1638     return ctx->app_data;
1639 }
1640
1641 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1642                             int (*init) (EVP_PKEY_CTX *ctx))
1643 {
1644     pmeth->init = init;
1645 }
1646
1647 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1648                             int (*copy) (EVP_PKEY_CTX *dst,
1649                                          const EVP_PKEY_CTX *src))
1650 {
1651     pmeth->copy = copy;
1652 }
1653
1654 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1655                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1656 {
1657     pmeth->cleanup = cleanup;
1658 }
1659
1660 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1661                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1662                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1663                                                  EVP_PKEY *pkey))
1664 {
1665     pmeth->paramgen_init = paramgen_init;
1666     pmeth->paramgen = paramgen;
1667 }
1668
1669 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1670                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1671                               int (*keygen) (EVP_PKEY_CTX *ctx,
1672                                              EVP_PKEY *pkey))
1673 {
1674     pmeth->keygen_init = keygen_init;
1675     pmeth->keygen = keygen;
1676 }
1677
1678 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1679                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1680                             int (*sign) (EVP_PKEY_CTX *ctx,
1681                                          unsigned char *sig, size_t *siglen,
1682                                          const unsigned char *tbs,
1683                                          size_t tbslen))
1684 {
1685     pmeth->sign_init = sign_init;
1686     pmeth->sign = sign;
1687 }
1688
1689 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1690                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1691                               int (*verify) (EVP_PKEY_CTX *ctx,
1692                                              const unsigned char *sig,
1693                                              size_t siglen,
1694                                              const unsigned char *tbs,
1695                                              size_t tbslen))
1696 {
1697     pmeth->verify_init = verify_init;
1698     pmeth->verify = verify;
1699 }
1700
1701 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1702                                       int (*verify_recover_init) (EVP_PKEY_CTX
1703                                                                   *ctx),
1704                                       int (*verify_recover) (EVP_PKEY_CTX
1705                                                              *ctx,
1706                                                              unsigned char
1707                                                              *sig,
1708                                                              size_t *siglen,
1709                                                              const unsigned
1710                                                              char *tbs,
1711                                                              size_t tbslen))
1712 {
1713     pmeth->verify_recover_init = verify_recover_init;
1714     pmeth->verify_recover = verify_recover;
1715 }
1716
1717 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1718                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1719                                                     EVP_MD_CTX *mctx),
1720                                int (*signctx) (EVP_PKEY_CTX *ctx,
1721                                                unsigned char *sig,
1722                                                size_t *siglen,
1723                                                EVP_MD_CTX *mctx))
1724 {
1725     pmeth->signctx_init = signctx_init;
1726     pmeth->signctx = signctx;
1727 }
1728
1729 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1730                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1731                                                         EVP_MD_CTX *mctx),
1732                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1733                                                    const unsigned char *sig,
1734                                                    int siglen,
1735                                                    EVP_MD_CTX *mctx))
1736 {
1737     pmeth->verifyctx_init = verifyctx_init;
1738     pmeth->verifyctx = verifyctx;
1739 }
1740
1741 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1742                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1743                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1744                                                  unsigned char *out,
1745                                                  size_t *outlen,
1746                                                  const unsigned char *in,
1747                                                  size_t inlen))
1748 {
1749     pmeth->encrypt_init = encrypt_init;
1750     pmeth->encrypt = encryptfn;
1751 }
1752
1753 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1754                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1755                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1756                                                unsigned char *out,
1757                                                size_t *outlen,
1758                                                const unsigned char *in,
1759                                                size_t inlen))
1760 {
1761     pmeth->decrypt_init = decrypt_init;
1762     pmeth->decrypt = decrypt;
1763 }
1764
1765 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1766                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1767                               int (*derive) (EVP_PKEY_CTX *ctx,
1768                                              unsigned char *key,
1769                                              size_t *keylen))
1770 {
1771     pmeth->derive_init = derive_init;
1772     pmeth->derive = derive;
1773 }
1774
1775 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1776                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1777                                          void *p2),
1778                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1779                                              const char *type,
1780                                              const char *value))
1781 {
1782     pmeth->ctrl = ctrl;
1783     pmeth->ctrl_str = ctrl_str;
1784 }
1785
1786 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1787     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1788                        const unsigned char *tbs, size_t tbslen))
1789 {
1790     pmeth->digestsign = digestsign;
1791 }
1792
1793 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1794     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1795                          size_t siglen, const unsigned char *tbs,
1796                          size_t tbslen))
1797 {
1798     pmeth->digestverify = digestverify;
1799 }
1800
1801 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1802                              int (*check) (EVP_PKEY *pkey))
1803 {
1804     pmeth->check = check;
1805 }
1806
1807 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1808                                     int (*check) (EVP_PKEY *pkey))
1809 {
1810     pmeth->public_check = check;
1811 }
1812
1813 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1814                                    int (*check) (EVP_PKEY *pkey))
1815 {
1816     pmeth->param_check = check;
1817 }
1818
1819 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1820                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1821                                                            EVP_MD_CTX *mctx))
1822 {
1823     pmeth->digest_custom = digest_custom;
1824 }
1825
1826 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1827                             int (**pinit) (EVP_PKEY_CTX *ctx))
1828 {
1829     *pinit = pmeth->init;
1830 }
1831
1832 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1833                             int (**pcopy) (EVP_PKEY_CTX *dst,
1834                                            const EVP_PKEY_CTX *src))
1835 {
1836     *pcopy = pmeth->copy;
1837 }
1838
1839 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1840                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1841 {
1842     *pcleanup = pmeth->cleanup;
1843 }
1844
1845 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1846                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1847                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1848                                                    EVP_PKEY *pkey))
1849 {
1850     if (pparamgen_init)
1851         *pparamgen_init = pmeth->paramgen_init;
1852     if (pparamgen)
1853         *pparamgen = pmeth->paramgen;
1854 }
1855
1856 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1857                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1858                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1859                                                EVP_PKEY *pkey))
1860 {
1861     if (pkeygen_init)
1862         *pkeygen_init = pmeth->keygen_init;
1863     if (pkeygen)
1864         *pkeygen = pmeth->keygen;
1865 }
1866
1867 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1868                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1869                             int (**psign) (EVP_PKEY_CTX *ctx,
1870                                            unsigned char *sig, size_t *siglen,
1871                                            const unsigned char *tbs,
1872                                            size_t tbslen))
1873 {
1874     if (psign_init)
1875         *psign_init = pmeth->sign_init;
1876     if (psign)
1877         *psign = pmeth->sign;
1878 }
1879
1880 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1881                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1882                               int (**pverify) (EVP_PKEY_CTX *ctx,
1883                                                const unsigned char *sig,
1884                                                size_t siglen,
1885                                                const unsigned char *tbs,
1886                                                size_t tbslen))
1887 {
1888     if (pverify_init)
1889         *pverify_init = pmeth->verify_init;
1890     if (pverify)
1891         *pverify = pmeth->verify;
1892 }
1893
1894 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1895                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1896                                                                     *ctx),
1897                                       int (**pverify_recover) (EVP_PKEY_CTX
1898                                                                *ctx,
1899                                                                unsigned char
1900                                                                *sig,
1901                                                                size_t *siglen,
1902                                                                const unsigned
1903                                                                char *tbs,
1904                                                                size_t tbslen))
1905 {
1906     if (pverify_recover_init)
1907         *pverify_recover_init = pmeth->verify_recover_init;
1908     if (pverify_recover)
1909         *pverify_recover = pmeth->verify_recover;
1910 }
1911
1912 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1913                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1914                                                       EVP_MD_CTX *mctx),
1915                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1916                                                  unsigned char *sig,
1917                                                  size_t *siglen,
1918                                                  EVP_MD_CTX *mctx))
1919 {
1920     if (psignctx_init)
1921         *psignctx_init = pmeth->signctx_init;
1922     if (psignctx)
1923         *psignctx = pmeth->signctx;
1924 }
1925
1926 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1927                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1928                                                           EVP_MD_CTX *mctx),
1929                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1930                                                      const unsigned char *sig,
1931                                                      int siglen,
1932                                                      EVP_MD_CTX *mctx))
1933 {
1934     if (pverifyctx_init)
1935         *pverifyctx_init = pmeth->verifyctx_init;
1936     if (pverifyctx)
1937         *pverifyctx = pmeth->verifyctx;
1938 }
1939
1940 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1941                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1942                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1943                                                    unsigned char *out,
1944                                                    size_t *outlen,
1945                                                    const unsigned char *in,
1946                                                    size_t inlen))
1947 {
1948     if (pencrypt_init)
1949         *pencrypt_init = pmeth->encrypt_init;
1950     if (pencryptfn)
1951         *pencryptfn = pmeth->encrypt;
1952 }
1953
1954 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1955                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1956                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1957                                                  unsigned char *out,
1958                                                  size_t *outlen,
1959                                                  const unsigned char *in,
1960                                                  size_t inlen))
1961 {
1962     if (pdecrypt_init)
1963         *pdecrypt_init = pmeth->decrypt_init;
1964     if (pdecrypt)
1965         *pdecrypt = pmeth->decrypt;
1966 }
1967
1968 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1969                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1970                               int (**pderive) (EVP_PKEY_CTX *ctx,
1971                                                unsigned char *key,
1972                                                size_t *keylen))
1973 {
1974     if (pderive_init)
1975         *pderive_init = pmeth->derive_init;
1976     if (pderive)
1977         *pderive = pmeth->derive;
1978 }
1979
1980 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1981                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1982                                            void *p2),
1983                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1984                                                const char *type,
1985                                                const char *value))
1986 {
1987     if (pctrl)
1988         *pctrl = pmeth->ctrl;
1989     if (pctrl_str)
1990         *pctrl_str = pmeth->ctrl_str;
1991 }
1992
1993 void EVP_PKEY_meth_get_digestsign(const EVP_PKEY_METHOD *pmeth,
1994     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1995                         const unsigned char *tbs, size_t tbslen))
1996 {
1997     if (digestsign)
1998         *digestsign = pmeth->digestsign;
1999 }
2000
2001 void EVP_PKEY_meth_get_digestverify(const EVP_PKEY_METHOD *pmeth,
2002     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2003                           size_t siglen, const unsigned char *tbs,
2004                           size_t tbslen))
2005 {
2006     if (digestverify)
2007         *digestverify = pmeth->digestverify;
2008 }
2009
2010 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2011                              int (**pcheck) (EVP_PKEY *pkey))
2012 {
2013     if (pcheck != NULL)
2014         *pcheck = pmeth->check;
2015 }
2016
2017 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2018                                     int (**pcheck) (EVP_PKEY *pkey))
2019 {
2020     if (pcheck != NULL)
2021         *pcheck = pmeth->public_check;
2022 }
2023
2024 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2025                                    int (**pcheck) (EVP_PKEY *pkey))
2026 {
2027     if (pcheck != NULL)
2028         *pcheck = pmeth->param_check;
2029 }
2030
2031 void EVP_PKEY_meth_get_digest_custom(const EVP_PKEY_METHOD *pmeth,
2032                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2033                                                              EVP_MD_CTX *mctx))
2034 {
2035     if (pdigest_custom != NULL)
2036         *pdigest_custom = pmeth->digest_custom;
2037 }
2038
2039 #endif /* FIPS_MODULE */